A device for adding a flow sand to a ladle nozzle

Abstract

This utility model relates to the field of sand addition technology and discloses a sand addition device for a ladle nozzle, comprising: a cantilever, on which a winch is fixedly installed, the winch winding up a steel cable, and a hopper for loading is fixedly installed at the end of the steel cable; a discharge structure, comprising a sand adding pipe, an extension pipe, and an electric slide valve, the electric slide valve being fixedly installed at the bottom of the hopper, the sand adding pipe being fixedly connected to the discharge port of the electric slide valve, and the extension pipe being slidably connected to the sand adding pipe. The amount of material added is precisely controlled by the electric slide valve, while the motor drives the lead screw to rotate, the lead screw actuates the lead sleeve and pushes the extension pipe downward, thereby allowing the extension pipe to slide inside the sand adding pipe to adjust the height of the lower end of the extension pipe to adapt to nozzles of different depths. The design of this solution can achieve automated and precise sand addition, adapting to nozzles of different depths to meet actual production needs.

Description

Technical Field

[0001] This utility model relates to the field of diversion sand addition technology, and in particular to a diversion sand addition device for steel ladle nozzles. Background Technology

[0002] During sinter production, after replacing the sliding gate nozzle in the ladle, diversion sand should be added to ensure automatic opening of the nozzle and reduce secondary oxidation of the molten steel caused by oxygen diversion when it does not open automatically, thereby improving the quality of the molten steel and the cast billet.

[0003] A search revealed a prior art device for adding sand to a ladle (publication number: CN110000369A), which includes a platform, a column fixed on the platform, and a cantilever rotatably connected to the top of the column. Two fixed pulleys are fixed on the cantilever, and steel wire ropes are installed on the two fixed pulleys. The two ends of the steel wire ropes are respectively connected to a counterweight and a sand-adding funnel. By rotating the cantilever, the sand-adding funnel can be positioned above the ladle nozzle, and the axis of the sand-adding funnel coincides with the axis of the vertical ladle nozzle.

[0004] In existing technologies, the length of the tube at the bottom of the funnel is fixed. In actual production, the depth of the sprue varies, and the fixed-length tube is difficult to match the sand-addition operation of sprues with different depths, which limits the flexibility and applicability of the entire device.

[0005] Therefore, we propose a device for adding diversion sand to the ladle nozzle. Utility Model Content

[0006] The present invention mainly solves the technical problem that the fixed length of the sand-adding pipe is difficult to adapt to water inlets with different depths, and provides a sand-adding device for steel ladle water inlets.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a device for adding diverting sand to a ladle nozzle, comprising:

[0008] A cantilever arm, on which a winch is fixedly installed, the winch winding up a steel cable, and a hopper for loading is fixedly installed at the end of the steel cable;

[0009] The discharge structure is set at the bottom of the hopper for discharging material. The discharge structure includes a sand-adding pipe, an extension pipe, and an electric slide gate valve. The electric slide gate valve is fixedly installed at the bottom of the hopper. The sand-adding pipe is fixedly connected to the discharge port of the electric slide gate valve. The extension pipe is slidably connected to the sand-adding pipe.

[0010] A flow divider structure is installed at the end of the extension tube to disperse materials.

[0011] In a preferred embodiment of this utility model, the hopper forms a funnel-shaped structure with a constricted bottom opening, and a window is provided at the bottom of the hopper. The feed inlet of the electric slide valve is directly opposite the window, and the extension tube is adapted to the sand adding tube. The extension tube is slidably disposed in the cavity of the sand adding tube.

[0012] In a preferred embodiment of this utility model, the discharge structure further includes a motor, a lead screw, and a threaded sleeve. The motor is fixedly installed on the outer wall of the sand-adding pipe, the lead screw is fixedly connected to the output shaft of the motor, and the threaded sleeve is threadedly connected to the lead screw and fixedly connected to the lead screw.

[0013] In a preferred embodiment of this utility model, the discharge structure further includes a telescopic rod, which is fixedly connected to the outer wall of the sand-adding pipe, and the output shaft of the telescopic rod is fixedly connected to the outer wall of the extension pipe.

[0014] In a preferred embodiment of this utility model, the diversion structure includes several blades fixedly disposed at the lower port of the extension pipe, the blades being able to guide and disperse the material discharged from the extension pipe.

[0015] In a preferred embodiment of this utility model, the diversion structure further includes a fixed base and a connecting rod, the blade is fixedly connected to the fixed base, and the fixed base is fixedly installed to the extension tube via the connecting rod.

[0016] In a preferred embodiment of this utility model, the fixing base is a ring, the blade is spiral, the lower end of the blade is fixedly connected to the top of the fixing base, multiple blades are arranged in a ring array on the fixing base, the connecting rod is an L-shaped rod, the end of the connecting rod is welded to the fixing base, and the side wall of the connecting rod is welded to the outer wall of the extension tube.

[0017] This utility model provides a device for adding diverting sand to the ladle nozzle. It has the following beneficial effects:

[0018] 1. This is a sand-addition device for ladle nozzles. By connecting a motor and an electric slide valve to a PLC controller, the electric slide valve precisely controls the feeding amount, while the motor drives a lead screw to rotate. The lead screw moves a threaded sleeve and pushes an extension tube downward. The extension tube can slide inside the sand-addition pipe to adjust the height of the lower end of the extension tube to adapt to nozzles of different depths. The inner and outer walls of the sand-addition pipe and the extension tube are coated with a high-temperature resistant coating, such as silicon nitride, to extend service life and maintenance cycle. This design enables automated and precise sand addition, adapting to nozzles of different depths to meet actual production needs.

[0019] 2. This type of sand addition device for steel ladle nozzles uses multiple spiral blades to shear and disperse the material discharged from the extension pipe, ensuring that the material discharged from the extension pipe is evenly dispersed in all directions. This guarantees the uniformity and density of the filler, shortens the sand addition time, improves efficiency, suppresses the "material bulge" phenomenon, and avoids fluctuations in the casting rate due to poor sand addition uniformity. It adopts a mechanical structure, requires no power drive, and its service life and cost are controlled. Attached Figure Description

[0020] Figure 1 This is one of the overall perspective views of this utility model;

[0021] Figure 2 This is the second overall perspective view of the present utility model;

[0022] Figure 3 This is one of the three-dimensional views of the material discharge structure and hopper of this utility model;

[0023] Figure 4 This is the second perspective view of the material discharge structure and hopper of this utility model;

[0024] Figure 5 This is a three-dimensional view of the diversion structure of this utility model.

[0025] Legend: 10. Cantilever; 11. Winch; 12. Hopper; 13. Sand adding pipe; 14. Extension pipe; 15. Electric slide gate valve; 16. Motor; 17. Lead screw; 18. Sleeve; 19. Telescopic rod; 20. Blade; 21. Fixed base; 22. Connecting rod. Detailed Implementation

[0026] A device for adding diversion sand to the ladle nozzle, such as Figure 1 and Figure 2 As shown, it includes:

[0027] A cantilever 10 is provided, on which a winch 11 is fixedly installed. The winch 11 winds up a steel cable, and a hopper 12 for loading is fixedly installed at the end of the steel cable.

[0028] like Figure 2 , Figure 3 and Figure 4As shown, the discharge structure is located at the bottom of the hopper 12 for discharging material. The discharge structure includes a sand-adding pipe 13, an extension pipe 14, and an electric slide gate valve 15. The electric slide gate valve 15 is fixedly installed at the bottom of the hopper 12. The sand-adding pipe 13 is fixedly connected to the discharge port of the electric slide gate valve 15. The extension pipe 14 is slidably connected to the sand-adding pipe 13. The hopper 12 forms a funnel-shaped structure with a constricted bottom opening. A window is opened at the bottom of the hopper 12, and the inlet of the electric slide gate valve 15 faces the window. The extension pipe 14 is connected to the sand-adding pipe... The 13-phase adapter, the extension tube 14 is slidably disposed in the cavity of the sand adding tube 13, the discharge structure also includes a motor 16, a lead screw 17 and a threaded sleeve 18, the motor 16 is fixedly installed on the outer wall of the sand adding tube 13, the lead screw 17 is fixedly connected to the output shaft of the motor 16, the threaded sleeve 18 is threadedly connected to the lead screw 17 and fixedly connected to the lead screw 17, the discharge structure also includes a telescopic rod 19, the telescopic rod 19 is fixedly connected to the outer wall of the sand adding tube 13, and the output shaft of the telescopic rod 19 is fixedly connected to the outer wall of the extension tube 14;

[0029] In this solution, the motor 16 and the electric slide gate valve 15 are connected to a PLC controller. The electric slide gate valve 15 precisely controls the feeding amount, while the motor 16 drives the lead screw 17 to rotate. The lead screw 17 moves the lead sleeve 18 and pushes the extension tube 14 downward. Thus, the extension tube 14 can slide inside the sand adding pipe 13 to adjust the height of the lower port of the extension tube 14 to adapt to different depths of the water inlet. The inner and outer walls of the sand adding pipe 13 and the extension tube 14 are coated with a high-temperature resistant coating, such as silicon nitride, to extend the service life and maintenance cycle. This solution can achieve automated and precise sand feeding, adapting to water inlets of different depths to meet actual production needs.

[0030] like Figure 4 and Figure 5 As shown, a flow-diverting structure is provided at the end of the extension pipe 14 to disperse materials;

[0031] The diversion structure includes several blades 20 fixedly installed at the lower port of the extension pipe 14. The blades 20 can guide and disperse the material discharged from the extension pipe 14. The diversion structure also includes a fixed seat 21 and a connecting rod 22. The blades 20 are fixedly connected to the fixed seat 21. The fixed seat 21 is fixedly installed to the extension pipe 14 through the connecting rod 22. The fixed seat 21 is a ring. The blades 20 are spiral. The lower end of the blades 20 is fixedly connected to the top of the fixed seat 21. Multiple blades 20 are arranged in a ring array on the fixed seat 21. The connecting rod 22 is an L-shaped rod. The end of the connecting rod 22 is welded to the fixed seat 21. The side wall of the connecting rod 22 is welded to the outer wall of the extension pipe 14.

[0032] In this solution, as a supplement to the above solution, multiple spiral blades 20 are set to shear and disperse the material discharged from the extension pipe 14, so that the material discharged from the extension pipe 14 can be evenly dispersed in all directions, ensuring the uniformity and density of the filler, suppressing the "material bulge" phenomenon. The mechanical structure is adopted, which does not require power drive, and the service life and cost can be controlled.

[0033] The working principle of this utility model is as follows: The motor 16 and the electric slide valve 15 are connected to the PLC controller. The electric slide valve 15 precisely controls the feeding amount, while the motor 16 drives the lead screw 17 to rotate. The lead screw 17 moves the lead sleeve 18 and pushes the extension tube 14 downward. Thus, the extension tube 14 can slide inside the sand adding tube 13 to adjust the height of the lower port of the extension tube 14 to adapt to the water inlet of different depths. Multiple blades 20 are used to shear and disperse the material discharged from the extension tube 14, so that the material discharged from the extension tube 14 can be evenly dispersed in all directions, ensuring the uniformity and density of the filler, and achieving uniform material distribution. It is suitable for sand adding operation at the water inlet of sintered ore.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for adding diverting sand to a ladle nozzle, characterized in that, include: A cantilever (10) is fixedly installed with a winch (11), which winds up a steel cable and has a hopper (12) for loading fixedly installed at the end of the steel cable. The discharge structure is set at the bottom of the hopper (12) for discharging materials. The discharge structure includes a sand-adding pipe (13), an extension pipe (14), and an electric slide valve (15). The electric slide valve (15) is fixedly installed at the bottom of the hopper (12). The sand-adding pipe (13) is fixedly connected to the discharge port of the electric slide valve (15). The extension pipe (14) is slidably connected to the sand-adding pipe (13). The diversion structure is set at the end of the extension tube (14) to disperse the material.

2. The equipment for adding diverting sand to the ladle nozzle according to claim 1, characterized in that: The hopper (12) forms a funnel-shaped structure with a constricted bottom opening. A window is provided at the bottom of the hopper (12). The feed inlet of the electric slide valve (15) is directly opposite the window. The extension tube (14) is adapted to the sand adding tube (13). The extension tube (14) is slidably disposed in the cavity of the sand adding tube (13).

3. The equipment for adding diverting sand to the ladle nozzle according to claim 1, characterized in that: The discharge structure also includes a motor (16), a lead screw (17) and a threaded sleeve (18). The motor (16) is fixedly installed on the outer wall of the sand adding pipe (13). The lead screw (17) is fixedly connected to the output shaft of the motor (16). The threaded sleeve (18) is threadedly connected to the lead screw (17) and fixedly connected to the lead screw (17).

4. The equipment for adding diverting sand to the ladle nozzle according to claim 1, characterized in that: The discharge structure also includes a telescopic rod (19), which is fixedly connected to the outer wall of the sand adding pipe (13), and the output shaft of the telescopic rod (19) is fixedly connected to the outer wall of the extension pipe (14).

5. The equipment for adding diverting sand to the ladle nozzle according to claim 1, characterized in that: The diversion structure includes several blades (20) fixedly installed at the lower port of the extension pipe (14). The blades (20) can guide and disperse the material discharged from the extension pipe (14).

6. The equipment for adding diverting sand to the ladle nozzle according to claim 5, characterized in that: The diversion structure also includes a fixed seat (21) and a connecting rod (22). The blade (20) is fixedly connected to the fixed seat (21), and the fixed seat (21) is fixedly installed to the extension tube (14) through the connecting rod (22).

7. The equipment for adding diverting sand to the ladle nozzle according to claim 6, characterized in that: The fixed seat (21) is a ring, the blade (20) is spiral, the lower end of the blade (20) is fixedly connected to the top of the fixed seat (21), and multiple blades (20) are arranged in a ring array on the fixed seat (21). The connecting rod (22) is an L-shaped rod, the end of the connecting rod (22) is welded to the fixed seat (21), and the side wall of the connecting rod (22) is welded to the outer wall of the extension tube (14).

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