Adjustable dosing device for steelmaking

Abstract

An adjustable dosage metering device for steelmaking belongs to the technical field of steelmaking chemical dosing equipment and is used for metering the feeding of chemicals into a steelmaking furnace. The technical solution is as follows: Wheels are installed at the four corners of the base; the chemical tank is cylindrical; a top cover is installed on the top surface of the tank; a rotary motor is fixed at the center of the upper surface of the top cover; the rotating shaft is located inside the tank; the upper end of the rotating shaft is connected to the lower end of the motor shaft; multiple stirring blades are mounted around the rotating shaft; multiple metering pumps are fixed on the upper surface of the top cover; the lower inlets of the multiple metering pumps are connected to the upper ends of the main dosing pipes; multiple main dosing pipes are located inside the tank; and the upper outlets of the multiple metering pumps are connected to the lower inlets of multiple dosing bends. This invention has a simple structure and is easy to use. It can arbitrarily adjust the dosage according to steelmaking requirements, ensuring real-time mixing of the chemicals, guaranteeing the quality of the chemicals, and improving the actual application effect of the chemicals.

Description

Technical Field

[0001] This utility model relates to a quantitative dosing device for steelmaking with adjustable dosage, belonging to the technical field of steelmaking dosing equipment. Background Technology

[0002] The main raw materials for steelmaking are molten iron or pig iron with high carbon content and scrap iron. In the steelmaking process, there are indispensable processes for controlling carbon content (reducing carbon content) and removing harmful impurities from steel. By adding alloying elements and adjusting the composition, steel with the required properties is obtained. Therefore, in the steelmaking process, it is necessary to use steelmaking dosing equipment to add some agents to the steelmaking furnace to improve the steelmaking effect.

[0003] Chinese Patent No. CN113457547A discloses a chemical dosing device for steelmaking, comprising a main mixing tank, a discharge filter tank, and a dosing assembly. The main mixing tank is divided into an upper and lower section by an impurity filter screen. A water inlet pipe is located on one side of the upper section, and a dosing assembly is located on the side of the lower section near the water inlet pipe. A liquid outlet pipe is located on the side of the lower section away from the dosing assembly. During use, the chemical solution generated in the main mixing tank is transported to the discharge filter tank through the liquid outlet pipe. The discharge filter tank filters the chemical solution through the filter assembly and then outputs it through the liquid delivery pipe. This dosing device can perform chemical dosing in steelmaking; however, like other dosing devices, it lacks an easily adjustable dosing pipe, making it impossible to adjust arbitrarily according to operational needs. Furthermore, it cannot guarantee the real-time mixing effect of the chemicals, resulting in inconsistent chemical quality and affecting practical application effectiveness. Therefore, improvement is highly necessary. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a quantitative dosing device for steelmaking with adjustable dosage. This quantitative dosing device can adjust the dosage arbitrarily according to the requirements of steelmaking, ensure the real-time mixing effect of the agent, guarantee the quality of the agent, and improve the actual application effect of the agent.

[0005] The technical solution to the above technical problem is: An adjustable dosage metering device for steelmaking includes a base, a tank, a top cover, a rotary motor, a rotating shaft, stirring blades, a metering pump, a main dosing pipe, and a dosing bend. The tank is cylindrical, with its lower end vertically fixed to the base. The top cover is installed on the top surface of the tank, and the rotary motor is fixed at the center of the upper surface of the top cover. The rotating shaft is located inside the tank, and its upper end is connected to the lower end of the motor shaft. Multiple stirring blades are mounted around the rotating shaft. The metering pump is fixed on the upper surface of the top cover, and its lower inlet is connected to the upper end of the main dosing pipe. The main dosing pipe is located inside the tank, with its lower end facing the bottom surface of the tank. The upper outlet of the metering pump is connected to the lower inlet of the dosing bend, and the upper outlet of the dosing bend is opposite to the steelmaking furnace.

[0006] The aforementioned adjustable dosage steelmaking quantitative dosing device has a square base with wheels installed at the four corners of its bottom surface.

[0007] In the above-mentioned adjustable dosage steelmaking quantitative dosing device, the stirring blade is a rectangular straight panel with an inclined angle between the straight panel and the horizontal plane, and the middle part of the stirring blade is fixedly connected to the rotating shaft.

[0008] The aforementioned adjustable dosage steelmaking quantitative dosing device comprises multiple quantitative pumps, main dosing pipes, and dosing bends. The multiple quantitative pumps are evenly distributed and installed on the top cover of the tank, and the multiple main dosing pipes are located inside the tank. The lower inlet of the multiple quantitative pumps is connected to the upper end of the multiple main dosing pipes, and the upper outlet of the multiple quantitative pumps is connected to the lower inlet of the multiple dosing bends.

[0009] The aforementioned adjustable dosage steelmaking quantitative dosing device comprises a dosing bend consisting of a rear bend, a front bend, and a spray head. Both the rear and front bends are L-shaped pipes. The diameter of the rear bend is smaller than that of the main dosing pipe, and the diameter of the front bend is smaller than that of the rear bend. The upper inner wall of the main dosing pipe is threaded, and the lower outer wall of the rear bend is threaded to match the thread on the upper inner wall of the main dosing pipe. The lower end of the rear bend is threaded to the upper end of the main dosing pipe. The front inner wall of the rear bend is threaded, and the rear outer wall of the front bend is threaded to match the thread on the front inner wall of the rear bend. The rear end of the front bend is threaded to the front end of the rear bend, and the front outer wall of the front bend is threaded. The upper inner hole of the spray head is threaded to match the thread on the front outer wall of the front bend, and the upper inner hole of the spray head is threaded to the front outer wall of the front bend.

[0010] The aforementioned adjustable dosage steelmaking quantitative dosing device has a drive gear fixedly connected to the lower end of the rotating shaft. Multiple main dosing pipes are connected to bottom dosing pipes at their lower ends. The diameter of the bottom dosing pipes is larger than that of the main dosing pipes. The lower end of the bottom dosing pipes is open. The bottom dosing pipe contains a rotating rod and clearing blades. The clearing blades are rectangular plates. Multiple clearing blades are vertically welded around the circumference of the rotating rod. The outer edges of the multiple clearing blades are rotatably engaged with the inner wall of the bottom dosing pipe. The lower end of the rotating rod is welded to the center of the upper surface of the meshing gear. The circumference of the meshing gear meshes with the drive gear at the lower end of the rotating shaft.

[0011] The aforementioned adjustable dosage steelmaking quantitative dosing device has a bracket fixedly connected to the upper surface of the base. The bracket is a rectangular frame, placed vertically, and a controller is fixed at the upper end of the bracket. The controller is connected to a rotary motor and a quantitative pump.

[0012] The beneficial effects of this utility model are: A metering pump is installed between the main dosing pipe and the dosing bend in this device. The metering pump can adjust the dosage of the dosing in the dosing bend. A rotary motor drives a rotating shaft to rotate, and the stirring blades installed around the circumference of the rotating shaft can agitate the liquid in the tank, making the solution evenly mixed. The lower end of the rotating shaft is connected to a meshing gear through a drive gear. The meshing gear drives a clearing blade to rotate through a rotating rod. The clearing blade can clear and clean the inside of the bottom dosing pipe at the lower end of the main dosing pipe in real time, ensuring the smooth flow of the bottom dosing pipe and the main dosing pipe, avoiding blockages, and improving the application effect of the equipment. The controller can control the dosage of the metering pump and the operation of the rotary motor to ensure the normal operation of the equipment.

[0013] This invention has a simple structure and is easy to use. It can adjust the dosage of the chemical according to the requirements of steelmaking, ensure the real-time mixing effect of the chemical, guarantee the quality of the chemical, and improve the actual application effect of the chemical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 A bottom view; Figure 3 This is a schematic diagram of the exploded structure of the medicine pot; Figure 4 This is a schematic diagram of the metering pump and dosing tubing; Figure 5 This is a schematic diagram of the exploded structure of the dosing bend; Figure 6 This is a schematic diagram of the connection between the drive gear and the meshing gear.

[0015] The following components are marked in the diagram: 1. Base; 2. Wheels; 3. Bracket; 4. Controller; 5. Medicine tank; 6. Top cover; 7. Rotary motor; 8. Rotating shaft; 9. Stirring blade; 10. Metering pump; 11. Main dosing pipe; 12. Dosing bend; 13. Rear bend; 14. Front bend; 15. Spray head; 16. Bottom dosing pipe; 17. Unblocking blade; 18. Rotating rod; 19. Meshing gear; 20. Drive gear. Detailed Implementation

[0016] This utility model consists of a base 1, a walking wheel 2, a bracket 3, a controller 4, a medicine tank 5, a top cover 6, a rotary motor 7, a rotating shaft 8, a stirring blade 9, a metering pump 10, a main dosing pipe 11, a dosing bend 12, a bottom dosing pipe 16, and a dredging structure.

[0017] Figure 1 , 2 The display shows that the base 1 is a square plate, and four wheels 2 are installed at the four corners of the bottom surface of the base 1. The wheels 2 can be used to move the device to the dosing location for dosing.

[0018] Figure 1 , 2 The display shows that a bracket 3 is fixedly connected to the upper surface of the base 1. The bracket 3 is placed vertically, and a controller 4 is fixed to the upper end of the bracket 3. The controller 4 is connected to the rotary motor 7 and the metering pump 10. The controller 4 is used to control the dosage of the metering pump 10 and the start of the rotary motor 7 to ensure the normal operation of the equipment.

[0019] Figure 1 , 3 The medicine container 5 is cylindrical, with a top cover 6 mounted on its top surface. A rotary motor 7 is fixed to the center of the upper surface of the top cover 6. A rotating shaft 8 is located inside the medicine container 5, with its upper end connected to the lower end of the motor shaft of the rotary motor 7. Multiple stirring blades 9 are mounted around the rotating shaft 8. When the rotary motor 7 is turned on, the rotating shaft 8 drives the stirring blades 9 to stir the liquid medicine inside the medicine container 5, keeping the liquid medicine uniform.

[0020] Figure 1 , 3 The display shows that multiple metering pumps 10 are fixed on the upper surface of the top cover 6, and the lower inlets of the multiple metering pumps 10 are respectively connected to the upper ends of the main dosing pipes 11. The multiple main dosing pipes 11 are located inside the tank 5, with their lower ends facing the bottom surface of the tank 5. The upper outlets of the multiple metering pumps 10 are respectively connected to the lower inlets of multiple dosing bends 12, and the upper outlets of the multiple dosing bends 12 are respectively facing the steelmaking furnace. The dosing rate of this device can be adjusted by the metering pumps 10.

[0021] Figure 1 , 3As shown, the stirring blade 9 is a rectangular straight panel. The straight panel of the stirring blade 9 is inclined at an angle to the horizontal plane. One end of the stirring blade 9 along its length is fixedly connected to the rotating shaft 8 perpendicularly.

[0022] Figure 4 , 5 The dosing bend 12 is shown to consist of a rear bend 13, a front bend 14, and a spray head 15. Both the rear bend 13 and the front bend 14 are L-shaped pipes. The diameter of the rear bend 13 is smaller than the diameter of the main dosing pipe 11, and the diameter of the front bend 14 is smaller than the diameter of the rear bend 13. The lower end of the rear bend 13 is inserted into the upper end of the main dosing pipe 11 and connected by threads. The rear end of the front bend 14 is inserted into the front end of the rear bend 13 and also connected by threads. The front end of the front bend 14 bends downwards. The upper inner hole of the spray head 15 has threads that match the threads on the outer wall of the front end of the front bend 14, and the upper inner hole of the spray head 15 is threadedly connected to the outer wall of the front end of the front bend 14.

[0023] Figure 3 , 4 The diagram shows that the lower ends of multiple main dosing pipes 11 are respectively connected to bottom dosing pipes 16. The diameter of the bottom dosing pipes 16 is larger than the diameter of the main dosing pipes 11. The lower end of the bottom dosing pipes 16 is open, and there is a dredging structure inside the pipe. The dredging structure agitates the liquid medicine entering the main dosing pipes 11.

[0024] Figure 3 , 4 The unblocking structure consists of unblocking blades 17 and a rotating rod 18. The unblocking blades 17 are rectangular plates, and multiple unblocking blades 17 are vertically welded together around the circumference of the rotating rod 18. The outer edges of the multiple unblocking blades 17 are rotatably engaged with the inner wall of the bottom dosing pipe 16. Figure 3 , 6 The lower end of the rotating shaft 8 is fixedly connected to the drive gear 20, and the lower end of the rotating rod 18 is welded to the center of the upper surface of the meshing gear 19. The circumference of the meshing gear 19 meshes with the drive gear 20. While rotating and stirring, the rotating shaft 8 drives the drive gear 20 to rotate, which in turn drives the meshing gear 19 to rotate. The rotating rod 18 on the meshing gear 19 then drives the unblocking blade 17 to rotate. The unblocking blade 17 can unblock and clean the inside of the bottom dosing pipe 16 at the lower end of the main dosing pipe 11 in real time, ensuring the smoothness of the bottom dosing pipe 16 and the main dosing pipe 11, avoiding blockages, and improving the application effect of the equipment.

[0025] The working process of this utility model is as follows: When in use, turn on the rotary motor 7, which drives the rotating shaft 8 to rotate, and the rotating shaft 8 drives the stirring blade 9 to rotate to achieve real-time mixing of the medicine. When it is necessary to add chemicals in steelmaking, adjust the rotation of the feeding bend 12 according to the location of the chemical addition, so that the front bend 14 of the feeding bend 12 rotates until it reaches the appropriate position, turn on the metering pump 10, input the amount of chemical to be added in the controller 4, and the metering pump 10 can draw a metered amount of chemical and spray it out through the spray head 15. After the rotary motor 7 is turned on, the rotating shaft 8 drives the drive gear 20 connected to the lower end to rotate synchronously. The drive gear 20 drives multiple meshing gears 19 to rotate synchronously. The multiple meshing gears 19 can drive the unblocking blades 17 to rotate through the rotating rod 18. The unblocking blades 17 can unblock and clean the inside of the bottom dosing pipe 16 in real time, ensuring the smoothness of the bottom dosing pipe 16 and the main dosing pipe 11, avoiding blockage, and improving the application effect of the equipment.

[0026] An embodiment of this utility model is as follows: The base 1 is 2100mm long, 1600mm wide, and 320mm thick; The length of bracket 3 is 1920mm and the width is 135mm; The controller 4 is model S7-200 SMART; The diameter of medicine container 5 is 1150mm and the height is 2200mm; The model of the rotary motor 7 is Y80M1-2; The diameter of the rotating shaft 8 is 75mm and its length is 1800mm; The stirring blade 9 is 180mm long, 140mm wide, and 2mm thick; The model of the metering pump 10 is MVI 1603; The main dosing tube 11 has a diameter of 85 mm and a length of 1900 mm; The diameter of the rear bend 13 of the dosing bend 12 is 85mm and the length is 400mm, the diameter of the front bend 14 is 50mm and the length is 560mm, and the diameter of the spray head 15 is 50mm.

Claims

1. A quantitative dosing device for steelmaking with adjustable dosage, characterized in that: It includes a base (1), a medicine tank (5), a top cover (6), a rotary motor (7), a rotating shaft (8), stirring blades (9), a metering pump (10), a main dosing pipe (11), and a dosing bend (12). The medicine tank (5) is a cylindrical body, and the lower end of the medicine tank (5) is vertically fixed on the base (1). The top cover (6) is installed on the top surface of the medicine tank (5), and the rotary motor (7) is fixed at the center of the upper surface of the top cover (6). The rotating shaft (8) is located inside the medicine tank (5), and the upper end of the rotating shaft (8) is connected to the motor shaft of the rotary motor (7). The lower ends are connected, and multiple stirring blades (9) are installed around the rotating shaft (8). A metering pump (10) is fixed on the upper surface of the top cover (6). The lower end of the metering pump (10) is connected to the upper end of the main dosing pipe (11). The main dosing pipe (11) is located inside the tank of the medicine tank (5). The lower end of the main dosing pipe (11) is opposite to the bottom surface of the tank of the medicine tank (5). The upper end of the metering pump (10) is connected to the lower end of the dosing bend (12). The upper end of the dosing bend (12) is opposite to the steelmaking furnace.

2. The steelmaking quantitative dosing device with adjustable dosage according to claim 1, characterized in that: The base (1) is a square plate, and the four corners of the bottom surface of the base (1) are respectively equipped with walking wheels (2).

3. The steelmaking quantitative dosing device with adjustable dosage according to claim 1, characterized in that: The stirring blade (9) is a rectangular straight panel. The straight panel of the stirring blade (9) is inclined at an angle to the horizontal plane. The middle part of the stirring blade (9) is fixedly connected to the rotating shaft (8).

4. The steelmaking quantitative dosing device with adjustable dosage according to claim 1, characterized in that: The metering pump (10), main dosing pipe (11) and dosing bend (12) are multiple. The multiple metering pumps (10) are evenly distributed on the top cover (6) of the medicine tank (5). The multiple main dosing pipes (11) are located in the tank body of the medicine tank (5). The lower inlet of the multiple metering pumps (10) is connected to the upper end of the multiple main dosing pipes (11). The upper outlet of the multiple metering pumps (10) is connected to the lower inlet of the multiple dosing bends (12).

5. The steelmaking quantitative dosing device with adjustable dosage according to claim 1, characterized in that: The dosing bend (12) consists of a rear bend (13), a front bend (14), and a spray head (15). The rear bend (13) and the front bend (14) are both L-shaped pipes. The diameter of the rear bend (13) is smaller than the diameter of the main dosing pipe (11), and the diameter of the front bend (14) is smaller than the diameter of the rear bend (13). The upper end of the main dosing pipe (11) has threads on its inner wall, and the lower end of the rear bend (13) has threads on its outer wall that match the threads on the upper end of the main dosing pipe (11). The lower end of the rear bend (13) is connected to the main dosing pipe. The upper end of the medicine tube (11) is threaded, the inner wall of the front end of the back bend (13) is threaded, the outer wall of the rear end of the front bend (14) is threaded and matches the thread of the inner wall of the front end of the back bend (13), the rear end of the front bend (14) is threaded and the front end of the back bend (13) is threaded, the outer wall of the front end of the front bend (14) is threaded, the inner hole of the upper end of the spray head (15) is threaded and matches the thread of the outer wall of the front end of the front bend (14), and the inner hole of the upper end of the spray head (15) is threaded and matches the thread of the outer wall of the front end of the front bend (14).

6. The steelmaking quantitative dosing device with adjustable dosage according to claim 1, characterized in that: The lower end of the rotating shaft (8) is fixedly connected to a drive gear (20), and the lower end of the main dosing pipe (11) is connected to a bottom dosing pipe (16). The diameter of the bottom dosing pipe (16) is larger than that of the main dosing pipe (11). The lower end of the bottom dosing pipe (16) is open. The bottom dosing pipe (16) contains a rotating rod (18) and a clearing blade (17). The clearing blade (17) is a rectangular plate. Multiple clearing blades (17) are vertically welded around the circumference of the rotating rod (18). The outer edges of the multiple clearing blades (17) are respectively rotated to fit the inner wall of the bottom dosing pipe (16). The lower end of the rotating rod (18) is welded to the center of the upper surface of the meshing gear (19). The circumference of the meshing gear (19) meshes with the drive gear (20) at the lower end of the rotating shaft (8).

7. The steelmaking quantitative dosing device with adjustable dosage according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected to a bracket (3), which is a rectangular frame. The bracket (3) is placed vertically, and a controller (4) is fixed at the upper end of the bracket (3). The controller (4) is connected to a rotary motor (7) and a metering pump (10).

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