Ladle filler sand adding device and using method
Through the drainage sand and sand addition device, the automatic sand addition of sand is solved, and the problems of long lifting time of ladles and inaccurate sand addition are improved, the production efficiency and self-opening rate are improved, and the temperature loss and slag accumulation risk are reduced.
Patent Information
- Application Number
- CN202510721904.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-08-19
AI Technical Summary
In the prior art, the long time of lifting and sanding of the ladle leads to an increase in temperature drop, and it is difficult to accurately add sand when the ladle shakes, which affects the production rhythm and self-opening rate. Moreover, slag accumulation in the ladle is prone to reflux, resulting in non-opening.
The drainage sand and sand addition device is adopted, and the fixing device and the drainage sand conveying device are clamped together, and sand is added from the drainage port. The lifting, telescopic cylinder and sand pushing cylinder are used to achieve automatic sand addition, forming a mushroom head-shaped protrusion.
It realizes the sand replenishment operation alone, reduces the loss of ladle lifting time, improves production efficiency and self-opening rate, and reduces the risk of temperature loss and slag reflux.
Smart Images
Figure CN120502689A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of steelmaking, and in particular to a drainage sand adding device and a use method thereof. Background Art
[0002] Drainage sand, also known as drainage agent, is a loose refractory material filled into the ladle base bricks and upper nozzle. Drainage sand is added to the converter before tapping to prevent molten steel from entering. It is then released during pouring to guide the steel flow. To ensure smooth ladle opening, a mushroom-shaped protrusion forms at the upper nozzle after the ladle drainage sand is added. This prevents cold steel from forming on the top of the ladle base bricks, which would affect the automatic opening rate. Existing ladle drainage sand addition requires the ladle to be hoisted to a dedicated platform. During this process, a conduit is manually inserted into the ladle nozzle, and the drainage sand is then poured into the conduit, allowing it to enter the ladle base bricks and nozzle.
[0003] The problems with the existing technology are: 1. The overhead crane hoisting and sand adding time is long, resulting in an increase in the temperature drop of the ladle, which is not conducive to reducing the tapping temperature of the converter. 2. When the overhead crane is hoisting, the ladle and the sand adding pipe are in a suspended state and are prone to shaking. The lower end of the sand adding pipe is not easy to accurately correspond to the water inlet, or the drainage sand above the upper water inlet of the ladle cannot form a convex shape, affecting the production rhythm and the self-opening rate of the ladle. 3. When using a conduit to add drainage sand, the slide plate needs to be closed in advance. The accumulated slag or liquid slag in the ladle will flow back to the ladle water inlet, which may easily cause the ladle to not open automatically.
[0004] The purpose of the present invention is to overcome the drawbacks of the prior art and provide a drainage sand adding device. Summary of the Invention
[0005] The main purpose of the present invention is to provide a drainage sand adding device, which adopts the method of adding sand from the downspout, so as to effectively solve the problems raised in the background technology.
[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a drainage sand adding device, including a ladle clamping and fixing device, a mobile trolley, and a drainage sand conveying device; the drainage sand conveying device is fixed on the mobile trolley, the ladle clamping and fixing device is a door-shaped structure, and the mobile trolley is located on the lower side of the door-shaped structure.
[0007] Preferably, the ladle clamping and fixing device includes two columnar cylinder racks fixed to the ground, a clamping cylinder is fixed on the top of each cylinder rack, and an arc-shaped clamping block is fixed on the front end of each clamping cylinder push rod for clamping the ladle.
[0008] Preferably, the drainage sand conveying device includes two vertical lifting cylinders fixed on a mobile trolley, the tops of the two lifting cylinder push rods are fixed to the bottom of a rectangular sand box with an upper opening, a U-shaped frame is fixed to the bottom of the rectangular sand box between the two lifting cylinder push rods, two telescopic cylinders are vertically fixed to the bottom of the U-shaped frame, the tops of the two telescopic cylinder push rods are fixed to a rectangular plate, a through hole is provided in the middle of the rectangular plate, a circular push tube is fixed in the through hole, a sand pushing cylinder is fixed to the inner hole at the lower end of the circular push tube, a circular push plate is fixed on the push rod of the sand pushing cylinder, the upper end of the circular push tube passes through the bottom of the sand box, and a guide sleeve is fixed to the outside of the circular push tube on the inner bottom surface of the sand box.
[0009] Preferably, the diameter of the circular push plate is slightly smaller than the diameter of the inner hole of the circular push tube, and the sand pushing cylinder can push the circular push plate to move up and down in the inner hole of the circular push tube.
[0010] Preferably, a vibration motor is fixed to the side of the sand box.
[0011] Preferably, the inner diameter of the circular push tube is ≤ the inner diameter of the ladle outlet. When the push rod of the sand pushing cylinder is in a retracted state, the volume from the circular push plate to the top of the circular push tube is slightly larger than the volume of the inner hole between the bottom of the inner hole of the ladle outlet and the top of the seat brick at the bottom of the ladle, so as to ensure that when the drainage sand filling the inner hole of the circular push tube is completely pushed in from the outlet, the drainage sand forms a raised mushroom head sand pile on the top of the seat brick.
[0012] Preferably, a platform larger than the pipe diameter is provided at the top end of the circular push tube to facilitate docking of the top end of the circular push tube with the drain outlet.
[0013] Preferably, the trolley is provided with a hydraulic station to supply pressure to the lifting cylinder, the telescopic cylinder and the sand pushing cylinder.
[0014] Preferably, a height gauge is provided on the outer wall of the circular push tube, and the total amount of drainage sand in the circular push tube is adjusted by adjusting the initial height of the circular push plate to meet the increase in the amount of drainage sand required for the extension of the ladle age.
[0015] A drainage sand adding device, the use method of which comprises the following steps:
[0016] S1. Clean the ladle and confirm the cleaning of the ladle nozzle channel;
[0017] S2. A slide mechanism is installed on the underside of the ladle. Activate the slide mechanism so that the lower and upper water inlets are aligned and open. This ensures that the upper water inlet, upper slide, lower slide, and lower water inlet are connected. The ladle is then moved to the ladle clamping device, and the clamping cylinder is activated to secure the ladle in place.
[0018] S3. Add sand according to the ladle age to ensure that the top of the block forms a mushroom shape;
[0019] The weight of sand added is determined based on the ladle's age. If the ladle's age is less than 30 times, the initial amount of sand added is used. If the ladle's age is 30-50 times, the amount of sand added increases by 5kg. If the ladle's age is greater than 50 times, the amount of sand added increases by 10kg. The total amount of sand drained into the circular push tube can be adjusted by adjusting the initial height of the circular push plate.
[0020] S4. The push rod of the sand pushing cylinder is in the retracted state, the sand box and the circular push tube are filled with drainage sand, and the mobile trolley is pushed to the lower side of the ladle clamping fixture, the hydraulic station is powered on, and then the telescopic cylinder is started to lift the circular push tube to the highest point, and then the lifting cylinder is started to lift the sand box, and at the same time the position of the mobile trolley is adjusted so that the upper end of the circular push tube is aligned and close to the water outlet, the position of the trolley remains fixed, and the sand pushing cylinder is started again to push the drainage sand in the circular push tube from the water outlet into the water outlet, and then the slide moving mechanism is started again so that the upper slide and the lower slide are staggered, and the upper slide and the lower slide are staggered. The water inlet is closed, and the drainage sand left in the outlet falls back into the sand box. The crane lifts the ladle away, completing the installation of drainage sand. Then the push rods of the sand pushing cylinder, lifting cylinder, and telescopic cylinder are all recovered, and the vibration motor is started at the same time, so that the drainage sand in the sand box automatically fills the circular push tube. The position of the trolley remains fixed, and the crane lifts the next ladle to the middle of the two arc-shaped clamping blocks of the ladle clamping device. The slide moving mechanism is started to align the outlet and the upper water inlet in the open state, and the clamping cylinder is started to clamp the ladle in position, and the next installation of drainage sand begins.
[0021] The beneficial effects of the present invention are: the device enables a single person to complete the sand adding operation, and saves the time required to place, retract, and transport the ladle to the sand adding platform using the conduit to add drainage sand. It can also effectively reduce temperature losses during the ladle lifting operation, thus lowering the converter tapping temperature and minimizing temperature losses during the tapping process. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Attachment Figure 1 It is a structural schematic diagram of the present invention.
[0023] Attachment Figure 2 For attachment Figure 1 Enlarged view of the local structure.
[0024] Attachment Figure 3 It is a structural schematic diagram of the slide mechanism of the present invention when it is closed.
[0025] Attachment Figure 1 —3, lifting cylinder 1, telescopic cylinder 2, U-shaped frame 3, sand pushing cylinder 4, water inlet 5, vibration motor 6, lifting rope 7, ladle 8, arc clamping block 9, clamping cylinder 10, seat brick 11, upper slide 12, lower slide 13, water outlet 14, circular push pipe 15, drainage sand 16, sand box 17, cylinder frame 18, guide sleeve 19, circular push plate 20, mobile trolley 21, rectangular plate 22, hydraulic station 23. DETAILED DESCRIPTION
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0027] Attachment Figure 1 —3 shows a ladle clamping and fixing device, a movable trolley, and a drainage sand conveying device; the drainage sand conveying device is fixed on the movable trolley, the ladle clamping and fixing device is a gate-shaped structure, and the movable trolley is located at the lower side of the gate-shaped structure.
[0028] The ladle clamping and fixing device includes two columnar cylinder frames 18 fixed to the ground, a clamping cylinder 10 is fixed on the top of each cylinder frame 18, and an arc-shaped clamping block 9 is fixed on the front end of the push rod of each clamping cylinder 10 for clamping the ladle 8.
[0029] The drainage sand conveying device includes two vertical lifting cylinders 1 fixed on a mobile trolley 21, the tops of the push rods of the two lifting cylinders 1 are fixed to the bottom of a rectangular sand box 17 with an upper opening, and a U-shaped frame 3 is fixed to the bottom of the rectangular sand box 17 between the push rods of the two lifting cylinders 1. Two telescopic cylinders 2 are vertically fixed to the bottom of the U-shaped frame 3, and the tops of the push rods of the two telescopic cylinders 2 are fixed on a rectangular plate 22. A through hole is provided in the middle of the rectangular plate 22, and a circular push tube 15 is fixed in the through hole. A sand pushing cylinder 4 is fixed in the inner hole at the lower end of the circular push tube 15, and a circular push plate 20 is fixed on the push rod of the sand pushing cylinder 4. The upper end of the circular push tube 15 passes through the bottom of the sand box 17, and a guide sleeve 19 is fixed on the outside of the circular push tube 15 on the inner bottom surface of the sand box 17.
[0030] The diameter of the circular push plate 20 is slightly smaller than the inner diameter of the circular push tube 15 , and the sand pushing cylinder 4 can push the circular push plate 20 to move up and down in the inner hole of the circular push tube 15 .
[0031] A vibration motor 6 is fixed to the side of the sand box 17 .
[0032] The inner diameter of the circular push tube 15 is ≤ the inner diameter of the water outlet 14 of the ladle 8. When the push rod of the sand pushing cylinder 4 is in a retracted state, the volume from the circular push plate 20 to the top of the circular push tube 15 is slightly larger than the volume of the inner hole between the bottom of the inner hole of the water outlet 14 of the ladle 8 and the top of the seat brick 11 at the bottom of the ladle 8, so as to ensure that when the drainage sand filling the inner hole of the circular push tube 15 is completely pushed in from the water outlet 14, the drainage sand forms a raised mushroom head sand pile on the top of the seat brick 11.
[0033] The top end of the circular push tube 15 is provided with a platform that is larger than the tube diameter, so as to facilitate the docking of the top end of the circular push tube 15 with the drain port 14 .
[0034] The mobile trolley 21 is provided with a hydraulic station 23 for supplying pressure to the lifting cylinder 1 , the telescopic cylinder 2 , and the sand pushing cylinder 4 .
[0035] A height gauge is provided on the outer wall of the circular push tube 15. By adjusting the initial height of the circular push plate 20, the total amount of drainage sand in the circular push tube 15 can be adjusted to meet the increase in the amount of drainage sand required for the extension of the ladle age.
[0036] A drainage sand adding device, the use method of which comprises the following steps:
[0037] S1. Clean the ladle and confirm the cleaning of the ladle nozzle channel;
[0038] S2. A slide mechanism is provided on the underside of the ladle 8. Activating the slide mechanism aligns the drain port 14 with the upper port 5, which is in the open state. This aligns the upper port 5, upper slide 12, lower slide 13, and drain port 14 of the ladle. The ladle is then moved to the sand adding position, and the clamping cylinder 10 is activated to clamp the ladle in place.
[0039] S3. Add sand according to the ladle age to ensure that the top of the block forms a mushroom shape;
[0040] The added sand weight is determined based on the ladle's age. If the ladle is less than 30 times old, the added sand amount is the initial amount. If the ladle is 30-50 times old, the added sand amount is increased by 5kg. If the ladle is more than 50 times old, the added sand amount is increased by 10kg. The total amount of sand drained into the circular push tube 15 can be adjusted by adjusting the initial height of the circular push plate 20.
[0041] S4. The push rod of the sand pushing cylinder 4 is in the retracted state, the sand box 17 and the circular push tube 15 are filled with drainage sand 16, and the mobile trolley 21 is pushed to the lower side of the ladle clamping fixture, the hydraulic station 23 is powered on, and then the telescopic cylinder 2 is started to lift the circular push tube 15 to the highest point, and then the lifting cylinder 1 is started to lift the sand box 7, and at the same time the position of the mobile trolley 21 is adjusted so that the upper end of the circular push tube 15 is aligned and close to the water outlet 14, the position of the trolley remains fixed, and then the sand pushing cylinder 4 is started again to push the drainage sand in the circular push tube 15 from the water outlet 14 into the water inlet 5, and then the slide moving mechanism is started again so that the upper slide 12 and the lower slide 13 are staggered, the upper water inlet 5 is closed, and the drainage sand left in the lower water inlet 14 falls back into the sand box 17. The crane lifts the ladle 8 to complete the installation of drainage sand. Then the push rods of the sand pushing cylinder 4, the lifting cylinder 1, and the telescopic cylinder 2 are all recovered, and the vibration motor 6 is started at the same time, so that the drainage sand in the sand box 17 automatically fills the circular push tube 15, the trolley position remains fixed, and the crane lifts the next ladle to the middle of the two arc-shaped clamping blocks 9 of the ladle clamping device, starts the slide moving mechanism to align the lower water inlet 14 with the upper water inlet 5 in the open state, starts the clamping cylinder 10 to clamp the ladle in position, and starts the next installation of drainage sand.
[0042] The top of the circular push tube 15 is provided with a platform larger than the pipe diameter, so that the drainage sand can be pushed into the drain port 14 even if the top of the circular push tube 15 is slightly misaligned with the drain port 14 .
[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A drainage sand adding device, characterized in that: It includes a ladle clamping and fixing device, a mobile trolley, and a drainage sand conveying device; the drainage sand conveying device is fixed on the mobile trolley, the ladle clamping and fixing device is a door-shaped structure, and the mobile trolley is located at the lower side of the door-shaped structure.
2. A drainage sand adding device according to claim 1, characterized in that: The ladle clamping and fixing device comprises two columnar oil cylinder racks fixed to the ground, a clamping oil cylinder is fixed on the top of each oil cylinder rack, and an arc-shaped clamping block is fixed on the front end of each clamping oil cylinder push rod for clamping the ladle.
3. The drainage sand adding device according to claim 1, characterized in that: The drainage sand conveying device includes two vertical lifting cylinders fixed on a mobile trolley, the tops of the two lifting cylinder push rods are fixed to the bottom of a rectangular sand box with an upper opening, a U-shaped frame is fixed to the bottom of the rectangular sand box between the two lifting cylinder push rods, two telescopic cylinders are vertically fixed to the bottom of the U-shaped frame, the tops of the two telescopic cylinder push rods are fixed to a rectangular plate, a through hole is provided in the middle of the rectangular plate, a circular push tube is fixed in the through hole, a sand pushing cylinder is fixed to the inner hole at the lower end of the circular push tube, a circular push plate is fixed on the sand pushing cylinder push rod, the upper end of the circular push tube passes through the bottom of the sand box, and a guide sleeve is fixed to the outside of the circular push tube on the inner bottom surface of the sand box.
4. A drainage sand adding device according to claim 4, characterized in that: The diameter of the circular push plate is slightly smaller than the diameter of the inner hole of the circular push tube, and the sand pushing cylinder can push the circular push plate to move up and down in the inner hole of the circular push tube.
5. A drainage sand adding device according to claim 4, characterized in that: A vibration motor is fixed on the side of the sand box.
6. A drainage sand adding device according to claim 4, characterized in that: The inner diameter of the circular push tube is ≤ the inner diameter of the ladle drain outlet. When the push rod of the sand pushing cylinder is in the retracted state, the volume from the circular push plate to the top of the circular push tube is slightly larger than the volume of the inner hole between the bottom of the inner hole of the ladle drain outlet and the top of the seat brick at the bottom of the ladle, so as to ensure that when the drainage sand filling the inner hole of the circular push tube is pushed in from the drain outlet, the drainage sand forms a raised mushroom-head sand pile on the top of the seat brick.
7. The drainage sand adding device according to claim 4, characterized in that: The top end of the circular push pipe is provided with a platform which is larger than the pipe diameter, so as to facilitate the docking of the top end of the circular push pipe with the drain.
8. The drainage sand adding device according to claim 4, characterized in that: The mobile trolley is provided with a hydraulic station to supply pressure to the lifting oil cylinder, the telescopic oil cylinder and the sand pushing oil cylinder.
9. The drainage sand adding device according to claim 4, characterized in that: A height gauge is provided on the outer wall of the circular push tube. By adjusting the initial height of the circular push plate, the total amount of drainage sand in the circular push tube can be adjusted to meet the increase in the amount of drainage sand required for the extension of the ladle age.
10. A drainage sand adding device according to claim 1-9, wherein the method for using the device comprises the following steps: S1. Clean the ladle and confirm the cleaning of the ladle nozzle channel; S2. A slide mechanism is installed on the underside of the ladle. Activate the slide mechanism so that the lower and upper water inlets are aligned and open. This ensures that the upper water inlet, upper slide, lower slide, and lower water inlet are connected. The ladle is then moved to the ladle clamping device, and the clamping cylinder is activated to secure the ladle in place. S3. Add sand according to the ladle age to ensure that the top of the block forms a mushroom shape; The weight of sand added is determined based on the ladle's age. If the ladle's age is less than 30 times, the initial amount of sand added is used. If the ladle's age is 30-50 times, the amount of sand added increases by 5kg. If the ladle's age is greater than 50 times, the amount of sand added increases by 10kg. The total amount of sand drained into the circular push tube can be adjusted by adjusting the initial height of the circular push plate. S4. The push rod of the sand pushing cylinder is in the retracted state, the sand box and the circular push tube are filled with drainage sand, and the mobile trolley is pushed to the lower side of the ladle clamping fixture, the hydraulic station is powered on, and then the telescopic cylinder is started to lift the circular push tube to the highest point, and then the lifting cylinder is started to lift the sand box, and at the same time the position of the mobile trolley is adjusted so that the upper end of the circular push tube is aligned and close to the water outlet, the position of the trolley remains fixed, and the sand pushing cylinder is started again to push the drainage sand in the circular push tube from the water outlet into the water outlet, and then the slide moving mechanism is started again so that the upper slide and the lower slide are staggered, and the upper slide and the lower slide are staggered. The water inlet is closed, and the drainage sand left in the outlet falls back into the sand box. The crane lifts the ladle away, completing the installation of drainage sand. Then the push rods of the sand pushing cylinder, lifting cylinder, and telescopic cylinder are all recovered, and the vibration motor is started at the same time, so that the drainage sand in the sand box automatically fills the circular push tube. The position of the trolley remains fixed, and the crane lifts the next ladle to the middle of the two arc-shaped clamping blocks of the ladle clamping device. The slide moving mechanism is started to align the outlet and the upper water inlet in the open state, and the clamping cylinder is started to clamp the ladle in position, and the next installation of drainage sand begins.