A scrap charging device for a smelting furnace for casting and a charging method thereof

Abstract

The application provides a scrap steel feeding device for a smelting furnace and a feeding method thereof. The device comprises a support arranged in a workshop and a smelting furnace. Two guide rods are fixedly connected to the support and arranged transversely and parallel to each other. The two guide rods are located above the smelting furnace. A movable block is mounted on each of the two guide rods and can move transversely. A rotatable mounting box is mounted between the two movable blocks. A first magnetic plate and an extrusion plate are mounted on the top and the bottom of the mounting box respectively and can move away from each other. A lifting extrusion box is arranged below the guide rods in the workshop and can be lifted. The extrusion box is matched with the extrusion plate. The bottom of the extrusion box is uniformly provided with a plurality of blow holes which can blow dry hot air. The device can directly magnetically attract scrap steel from a material pile by using the first magnetic plate and complete the feeding process at the same time, so that the efficiency is high. The device can reshape the steel before feeding, so that the steel is in a block shape, is easier to feed and has a large feeding amount at one time.

Description

Technical Field

[0001] This invention relates to the field of smelting furnace technology, and in particular to a scrap steel feeding device and feeding method for a casting smelting furnace. Background Technology

[0002] Parts made of cast steel are called cast steel parts. They have similar properties to cast iron, but are stronger. Cast steel parts are mostly cast in a smelting furnace, and to save costs, scrap steel is generally used as the main raw material.

[0003] Currently, scrap steel is generally piled up together and placed separately in a silo. A grabbing device grabs the scrap steel into a storage tank, and then a hoisting device transports the storage tank to the top of the smelting furnace. The bottom of the storage tank opens automatically, and the scrap steel is put into the smelting furnace. This method lacks the shaping of the steel. Because the scrap steel is of different lengths and shapes, it is easy to get stuck in the storage tank or at the furnace opening. In addition, grabbing the scrap steel first and then transferring it through the storage tank is cumbersome and inefficient. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a scrap steel feeding device for a casting smelting furnace. This device can directly magnetically attract scrap steel from the stockpile using a first magnetic suction plate, thereby completing the feeding process. It is highly efficient, can shape the steel into blocks before feeding, making it easier to feed and allowing for a large feeding volume at a time.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows: A scrap steel feeding device for a casting smelting furnace includes a support frame and a smelting furnace installed in a workshop. Two horizontally arranged and parallel guide rods are fixedly connected to the support frame. The two guide rods are located above the smelting furnace. Each of the two guide rods is equipped with a horizontally movable block. A rotatable mounting box is installed between the two movable blocks. An extrusion plate and a first magnetic suction plate that can move in opposite directions are respectively installed on the top and bottom of the mounting box. An extrusion box that can be raised and lowered is also installed below the guide rods in the workshop. The extrusion box cooperates with the extrusion plate. Multiple air blowing holes that can blow out dry hot air are evenly distributed on the bottom of the extrusion box. A second magnetic suction plate that can move up and down is installed on the two guide rods directly above the smelting furnace.

[0006] Preferably, the two guide rods are provided with strip-shaped openings along their length, and a threaded rod is rotatably connected inside the strip-shaped openings. The moving block is threadedly connected to the threaded rod on the corresponding side.

[0007] Preferably, a connecting rod is fixedly connected between the right ends of the two guide rods, the connecting rod has a mounting cavity, a drive shaft is rotatably connected in the mounting cavity, a motor capable of driving the drive shaft to rotate is installed at the end of the connecting rod, and a transmission shaft extending into the mounting cavity is fixedly connected to the right end of the threaded rod, the transmission shaft and the drive shaft are connected by a bevel gear pair.

[0008] Preferably, two double-headed hydraulic cylinders are fixedly connected inside the mounting box. The two telescopic ends of the double-headed hydraulic cylinders extend out of the mounting box and are fixedly connected to the corresponding extrusion plate and the first magnetic suction plate, respectively.

[0009] Preferably, a rotating shaft is rotatably connected to the movable block, one end of the rotating shaft is fixedly connected to the corresponding side of the mounting box, and the other end of the rotating shaft passes through the movable block and is fixedly connected to a gear. A horizontally arranged mounting seat is fixedly connected to the outer side of the movable block, and a horizontally arranged first hydraulic cylinder is fixedly installed on the mounting seat. The telescopic end of the first hydraulic cylinder is fixedly connected to a toothed plate that meshes with the gear.

[0010] Preferably, two vertically arranged second hydraulic cylinders are fixedly installed at the bottom of the workshop, and the telescopic ends of the second hydraulic cylinders are fixedly connected to the bottom of the extrusion box.

[0011] Preferably, an inverted U-shaped frame is fixedly connected to the top of the two guide rods, and a vertically arranged third hydraulic cylinder is installed on the inverted U-shaped frame. The telescopic end of the third hydraulic cylinder is fixedly connected to the second magnetic suction plate.

[0012] Preferably, both the first magnetic plate and the second magnetic plate are high-temperature lifting electromagnets.

[0013] Preferably, the bottom of the extrusion box is provided with multiple air blowing pipes that communicate with the air blowing holes, and the air blowing pipes are connected to a hot air blower.

[0014] This invention also discloses a method for feeding scrap steel into a casting furnace, comprising the following specific steps: S1. While steelmaking in the smelting furnace, the motor is started to drive the drive shaft to rotate. Through the bevel gear pair and the transmission shaft, the two threaded rods are driven to rotate simultaneously. Then, the moving block drives the installation box to move, which in turn drives the first magnetic suction plate to move multiple times to the scrap steel pile, magnetically attracting the scrap steel to the top of the extrusion box and putting it into the extrusion box. S2. Start the hot air blower. High-temperature gas is blown into the box through multiple air pipes and multiple air holes, which can quickly dry the moisture on the surface of the scrap steel, reduce the moisture content of the scrap steel, and reduce energy consumption. S3. Start the first hydraulic cylinder to drive the toothed plate to move, and then drive the mounting box to flip through the gear and the shaft so that the extrusion plate faces down. Start the double-headed hydraulic cylinder to drive the extrusion plate to descend, extruding the scrap steel in the extrusion box and extruding it into blocks. S4. The material is flipped over again, magnetically attracted by the first magnetic suction plate, and transported to the top of the smelting furnace. The first hydraulic cylinder is activated to turn the first magnetic suction plate to a vertical position. The third hydraulic cylinder is activated to drive the second magnetic suction plate down, magnetically attracting the block of scrap steel and pushing it down into the smelting furnace, thus completing the feeding process.

[0015] The beneficial effects of this invention are as follows: 1. By installing two guide rods, threaded rods, a moving block, and a first magnetic suction plate, the two threaded rods are driven to rotate simultaneously by the drive shaft, bevel gear pair, and transmission shaft. The moving block then drives the mounting box to move, which in turn drives the first magnetic suction plate to move laterally. It can be moved directly from the material pile to the top of the smelting furnace. The first magnetic suction plate is used to quickly magnetically attract scrap steel, resulting in high feeding efficiency.

[0016] 2. By installing the extrusion plate and extrusion box, the first magnetic suction plate can magnetically attract scrap steel to the top of the extrusion box multiple times while steelmaking in the smelting furnace. The scrap steel is then put into the extrusion box. The first hydraulic cylinder is then activated to drive the toothed plate to move. The gear and rotating shaft drive the installation box to flip so that the extrusion plate faces downward. The double-headed hydraulic cylinder is then activated to drive the extrusion plate to descend, extruding the scrap steel in the extrusion box and squeezing it into blocks. The blocks are then flipped over again and magnetically attracted and transported by the first magnetic suction plate. This makes feeding easier and allows for a large amount of material to be fed at one time.

[0017] 3. By evenly distributing multiple air holes at the bottom of the extrusion box and starting the hot air blower, high-temperature gas is blown into the box through multiple air pipes and multiple air holes, which can quickly dry the moisture on the surface of the scrap steel, reduce the moisture content, and thus reduce the energy consumption of the smelting furnace.

[0018] 4. By installing a second magnetic suction plate, after the first magnetic suction plate magnetically attracts the block-shaped scrap steel and transports it to the top of the smelting furnace, the first hydraulic cylinder can be activated to turn the first magnetic suction plate to a vertical position. The third hydraulic cylinder is then activated to drive the second magnetic suction plate down, magnetically attracting the block-shaped scrap steel and pushing it into the smelting furnace. The scrap steel will not fall directly into the smelting furnace, thus preventing the smelting furnace from being damaged. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the guide rod proposed in this invention; Figure 3 This is a side view of the guide rod proposed in this invention; Figure 4 This is a schematic diagram of the feeding state of the present invention.

[0020] In the diagram: 1 guide rod, 2 strip-shaped opening, 3 threaded rod, 4 second magnetic suction plate, 5 inverted U-shaped frame, 6 third hydraulic cylinder, 7 extrusion plate, 8 mounting box, 9 double-headed hydraulic cylinder, 10 first magnetic suction plate, 11 connecting rod, 12 bracket, 13 extrusion box, 14 air blowing pipe, 15 air blowing hole, 16 second hydraulic cylinder, 17 smelting furnace, 18 bevel gear pair, 19 drive shaft, 20 motor, 21 gear, 22 moving block, 23 mounting base, 24 first hydraulic cylinder, 25 rotating shaft, 26 gear plate. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] Reference Figure 1-4 A scrap steel feeding device for a casting smelting furnace includes a support 12 and a smelting furnace 17 installed in a workshop. Two horizontally arranged and parallel guide rods 1 are fixedly connected to the support 12. The two guide rods 1 are located above the smelting furnace 17. Each guide rod 1 is equipped with a horizontally movable block 22. A rotatable mounting box 8 is installed between the two movable blocks 22. A rotating shaft 25 is rotatably connected to the movable block 22. One end of the rotating shaft 25 is fixedly connected to the corresponding side of the mounting box 8. The other end of the rotating shaft 25 passes through the movable block 22 and is fixedly connected to a gear 21. A horizontally arranged mounting seat 23 is fixedly connected to the outside of the movable block 22. A horizontally arranged first hydraulic cylinder 24 is fixedly installed on the mounting seat 23. The telescopic end of the first hydraulic cylinder 24 is fixedly connected to a toothed plate 26 that meshes with the gear 21. The mounting box 8 can be rotated 180° or 90° by the first hydraulic cylinder 24, the toothed plate 26, and the gear 21.

[0024] Two guide rods 1 have strip-shaped openings 2 along their length. Threaded rods 3 are rotatably connected inside the strip-shaped openings 2. A moving block 22 is threadedly connected to the threaded rod 3 on the corresponding side. Furthermore, a connecting rod 11 is fixedly connected between the right ends of the two guide rods 1. The connecting rod 11 has an installation cavity. A drive shaft 19 is rotatably connected inside the installation cavity. A motor 20 that can drive the drive shaft 19 to rotate is installed at the end of the connecting rod 11. A transmission shaft extending into the installation cavity is fixedly connected to the right end of the threaded rod 3. The transmission shaft and the drive shaft 19 are connected by a bevel gear pair 18. When the motor 20 is started, the drive shaft 19 is driven to rotate. The bevel gear pair 18 and the transmission shaft simultaneously drive the two threaded rods 3 to rotate, and then the moving block 22 drives the installation box 8 to move.

[0025] The top and bottom of the mounting box 8 are respectively equipped with an extrusion plate 7 and a first magnetic suction plate 10 that can move in opposite directions. Two double-headed hydraulic cylinders 9 are fixedly connected inside the mounting box 8. The two telescopic ends of the double-headed hydraulic cylinders 9 extend out of the mounting box 8 and are fixedly connected to the corresponding extrusion plate 7 and the first magnetic suction plate 10 respectively.

[0026] Inside the workshop, there is also a pressing box 13 located below the guide rod 1 and which can be raised and lowered. The pressing box 13 cooperates with the pressing plate 7. Two vertically set second hydraulic cylinders 16 are fixedly installed at the bottom of the workshop. The telescopic ends of the second hydraulic cylinders 16 are fixedly connected to the bottom of the pressing box 13. After the pressing is completed, the first magnetic suction plate 10 magnetically attracts the block of scrap steel, and then the second hydraulic cylinders 16 are activated to drive the pressing box 13 to descend, so that the block of scrap steel is removed from the pressing box 13.

[0027] The bottom of the extrusion box 13 is evenly distributed with multiple air holes 15 that can blow out dry hot air. The bottom of the extrusion box 13 is also provided with multiple air pipes 14 that are connected to the air holes 15. The air pipes 14 are connected to a hot air blower. When the hot air blower is turned on, high-temperature gas is blown into the box through the multiple air pipes 14 and the multiple air holes 15, which can quickly dry the moisture on the surface of the scrap steel, reduce the moisture content, and thus reduce the energy consumption of the smelting furnace 17.

[0028] Two guide rods 1 are equipped with a second magnetic suction plate 4 that can move up and down, located directly above the smelting furnace 17. The top of the two guide rods 1 is fixedly connected to an inverted U-shaped frame 5. A vertically arranged third hydraulic cylinder 6 is installed on the inverted U-shaped frame 5. The telescopic end of the third hydraulic cylinder 6 is fixedly connected to the second magnetic suction plate 4. When the third hydraulic cylinder 6 is activated, it drives the second magnetic suction plate 4 to descend, magnetically attracting the block-shaped scrap steel and pushing it downward into the smelting furnace 17. The scrap steel will not fall directly into the smelting furnace 17, thus preventing the smelting furnace 17 from being damaged.

[0029] Furthermore, both the first magnetic plate 10 and the second magnetic plate 4 are high-temperature lifting electromagnets that can withstand temperatures up to 600°C.

[0030] This invention also discloses a method for feeding scrap steel into a casting furnace, comprising the following specific steps: S1. While steelmaking in the smelting furnace 17, the motor 20 is started to drive the drive shaft 19 to rotate. Through the bevel gear pair 18 and the transmission shaft, the two threaded rods 3 are driven to rotate simultaneously. Then, the moving block 22 drives the installation box 8 to move, thereby driving the first magnetic suction plate 10 to move multiple times to the scrap steel pile, magnetically attracting the scrap steel to the top of the extrusion box 13 and putting it into the extrusion box 13. S2. Start the hot air blower. High-temperature gas is blown into the box through multiple air pipes 14 and multiple air holes 15, which can quickly dry the moisture on the surface of the scrap steel, reduce the moisture content of the scrap steel, and reduce energy consumption. S3. Start the first hydraulic cylinder 24 to drive the toothed plate 26 to move, and then drive the mounting box 8 to flip through the gear 21 and the rotating shaft 25 so that the extrusion plate 7 faces downward. Start the double-headed hydraulic cylinder 9 to drive the extrusion plate 7 to descend, extruding the scrap steel in the extrusion box 13 and extruding it into blocks. S4. The material is flipped over again, magnetically attracted by the first magnetic suction plate 10, and transported to the top of the smelting furnace 17. The first hydraulic cylinder 24 is activated to rotate the first magnetic suction plate 10 to a vertical position. The third hydraulic cylinder 6 is activated to drive the second magnetic suction plate 4 to descend, magnetically attract the block of scrap steel, and push it down into the smelting furnace 17, thus completing the feeding process.

[0031] While steelmaking in the smelting furnace 17, the starter motor 20 drives the drive shaft 19 to rotate. Through the bevel gear pair 18 and the transmission shaft, the two threaded rods 3 are simultaneously rotated. Then, the moving block 22 drives the mounting box 8 to move, which in turn drives the first magnetic suction plate 10 to move multiple times to the scrap steel pile. The scrap steel is magnetically attracted to the top of the extrusion box 13 and put into the extrusion box 13. The hot air fan is started, and high-temperature gas is blown into the box through multiple air blowing pipes 14 and multiple air blowing holes 15. This can quickly dry the moisture on the surface of the scrap steel, reduce the water content, and thus reduce the energy consumption of the smelting furnace 17.

[0032] The first hydraulic cylinder 24 is then activated to move the toothed plate 26. The gear 21 and the rotating shaft 25 then drive the mounting box 8 to flip, so that the extrusion plate 7 faces downward. The double-headed hydraulic cylinder 9 is then activated to drive the extrusion plate 7 to descend, extruding the scrap steel in the extrusion box 13 and extruding it into blocks. The blocks are then flipped again and magnetically attracted by the first magnetic suction plate 10 and transported to the top of the smelting furnace 17, making it easier to feed materials and allowing for a large amount of material to be fed at one time.

[0033] After the first magnetic suction plate 10 magnetically attracts the block-shaped scrap steel and transports it to the top of the smelting furnace 17, the first hydraulic cylinder 24 is activated to rotate the first magnetic suction plate 10 to a vertical position. The third hydraulic cylinder 6 is then activated to drive the second magnetic suction plate 4 to descend, magnetically attract the block-shaped scrap steel and push it downward into the smelting furnace 17. The scrap steel will not fall directly into the smelting furnace 17, thus preventing the smelting furnace 17 from being damaged.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A scrap steel feeding device for a casting smelting furnace, comprising a support frame (12) and a smelting furnace (17) installed in a workshop, characterized in that, The bracket (12) is fixedly connected to two horizontally arranged and parallel guide rods (1). The two guide rods (1) are located above the smelting furnace (17). Each of the two guide rods (1) is equipped with a horizontally movable block (22). A rotatable mounting box (8) is installed between the two movable blocks (22). The top and bottom of the mounting box (8) are respectively equipped with an extrusion plate (7) that can move in opposite directions and a first magnetic suction plate (10). The first magnetic suction plate (10) is used to... The extruded scrap steel is transported to the top of the smelting furnace (17). The first magnetic suction plate (10) is a high-temperature lifting electromagnet. The workshop is also equipped with an extrusion box (13) located below the guide rod (1) and which can be raised and lowered. The extrusion box (13) cooperates with the extrusion plate (7). The bottom of the extrusion box (13) is evenly distributed with multiple air holes (15) that can blow out dry hot air. The two guide rods (1) are equipped with a second magnetic suction plate (4) that can move up and down directly above the smelting furnace (17). Two double-headed hydraulic cylinders (9) are fixedly connected inside the mounting box (8). The two telescopic ends of the double-headed hydraulic cylinders (9) extend out of the mounting box (8) and are fixedly connected to the corresponding extrusion plate (7) and the first magnetic suction plate (10) respectively. The movable block (22) is rotatably connected to a rotating shaft (25). One end of the rotating shaft (25) is fixedly connected to the corresponding side of the mounting box (8). The other end of the rotating shaft (25) passes through the movable block (22) and is fixedly connected to a gear (21). A horizontally arranged mounting seat (23) is fixedly connected to the outside of the movable block (22). A horizontally arranged first hydraulic cylinder (24) is fixedly installed on the mounting seat (23). The telescopic end of the first hydraulic cylinder (24) is fixedly connected to a toothed plate (26) that meshes with the gear (21).

2. The scrap steel feeding device for a casting smelting furnace according to claim 1, characterized in that, The two guide rods (1) are provided with strip-shaped openings (2) along their length direction. A threaded rod (3) is rotatably connected inside the strip-shaped openings (2). The moving block (22) is threadedly connected to the threaded rod (3) on the corresponding side.

3. The scrap steel feeding device for a casting smelting furnace according to claim 2, characterized in that, A connecting rod (11) is fixedly connected between the right ends of the two guide rods (1). The connecting rod (11) has an installation cavity. A drive shaft (19) is rotatably connected in the installation cavity. A motor (20) that can drive the drive shaft (19) to rotate is installed at the end of the connecting rod (11). A transmission shaft extending into the installation cavity is fixedly connected to the right end of the threaded rod (3). The transmission shaft and the drive shaft (19) are connected by a bevel gear pair (18).

4. The scrap steel feeding device for a casting smelting furnace according to claim 3, characterized in that, Two vertically arranged second hydraulic cylinders (16) are fixedly installed at the bottom of the workshop, and the telescopic ends of the second hydraulic cylinders (16) are fixedly connected to the bottom of the extrusion box (13).

5. The scrap steel feeding device for a casting smelting furnace according to claim 4, characterized in that, The top of the two guide rods (1) is fixedly connected to an inverted U-shaped frame (5), and a vertically arranged third hydraulic cylinder (6) is installed on the inverted U-shaped frame (5). The telescopic end of the third hydraulic cylinder (6) is fixedly connected to the second magnetic suction plate (4).

6. The scrap steel feeding device for a casting smelting furnace according to claim 5, characterized in that, The second magnetic plate (4) is a high-temperature lifting electromagnet.

7. The scrap steel feeding device for a casting smelting furnace according to claim 6, characterized in that, The bottom of the extrusion box (13) is provided with multiple air blowing pipes (14) that are connected to the air blowing holes (15), and the air blowing pipes (14) are connected to a hot air blower.

8. A feeding method based on the scrap steel feeding device for a casting smelting furnace according to claim 7, characterized in that, The specific steps include the following: S1. While steelmaking in the smelting furnace (17), the motor (20) is started to drive the drive shaft (19) to rotate. Through the bevel gear pair (18) and the transmission shaft, the two threaded rods (3) are driven to rotate. Then, through the moving block (22), the mounting box (8) is moved, which in turn drives the first magnetic suction plate (10) to move multiple times to the scrap steel pile, magnetically attracting the scrap steel to the top of the extrusion box (13) and putting it into the extrusion box (13). S2. Start the hot air blower. High-temperature gas is blown into the box through multiple air pipes (14) and multiple air holes (15), which can quickly dry the moisture on the surface of the scrap steel, reduce the moisture content of the scrap steel, and reduce energy consumption. S3. Start the first hydraulic cylinder (24) to drive the toothed plate (26) to move, and then drive the mounting box (8) to flip through the gear (21) and the rotating shaft (25) so that the extrusion plate (7) faces down. Start the double-headed hydraulic cylinder (9) to drive the extrusion plate (7) to descend, and extrude the scrap steel in the extrusion box (13) into blocks. S4. The material is flipped over again and magnetically attracted by the first magnetic suction plate (10) and transported to the top of the smelting furnace (17). The first hydraulic cylinder (24) is activated to make the first magnetic suction plate (10) turn to a vertical position. The third hydraulic cylinder (6) is activated to drive the second magnetic suction plate (4) to descend, magnetically attract the block of scrap steel and push it down into the smelting furnace (17) to complete the feeding process.

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