Repairing device for converter

Abstract

The utility model provides a converter repairing device which comprises a material mixing mechanism used for mixing materials, a material conveying mechanism used for conveying materials and a spraying mechanism used for spraying the materials, the material conveying mechanism comprises a material conveying pipe and an air supply pipe, one end of the material conveying pipe is communicated with the material mixing mechanism, and the other end of the material conveying pipe is communicated with the spraying mechanism. And the air supply pipe is communicated with the material conveying pipe. According to the device, high-pressure gas is input from the gas supply pipe, the repairing material conveyed from the material mixing mechanism is carried to be conveyed to the spraying mechanism and sprayed out from the spraying mechanism, when the repairing material is sprayed out from the spraying mechanism, due to the fact that the repairing material is mixed with a large amount of gas, a spraying head is not prone to being blocked, and the construction efficiency is improved; and a material with relatively high viscosity can be used for repairing.

Description

Technical Field

[0001] The utility model relates to the technical field of steel smelting, in particular to a converter repairing device. Background Art

[0002] In the existing converter steelmaking process, as the converter is used for a longer time, the converter's furnace mouth and furnace wall are prone to damage. In the existing construction process, repair materials are often used to repair these damaged locations. The more common repair method is to repair by spraying repair materials. A high-pressure pump is used to spray repair materials with a certain fluidity through a nozzle and spray them on the furnace wall or furnace mouth of the converter that needs to be repaired. When the existing equipment is spraying, the repair material is directly sprayed through the nozzle. When repairing with a repair material with a high viscosity, the repair material is easy to clog the nozzle, affecting the progress of the repair construction and failing to achieve a good repair effect.

[0003] In summary, there is an urgent need for a converter repair device to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide a converter repair device, aiming to solve the problem that the existing spraying equipment is prone to clogging when spraying repair materials. The specific technical solution is as follows:

[0005] A converter repair device includes a mixing mechanism for mixing materials, a feeding mechanism for conveying materials and an injection mechanism for spraying materials. The feeding mechanism includes a feeding pipe and an air supply pipe. One end of the feeding pipe is connected to the mixing mechanism, and the other end of the feeding pipe is connected to the injection mechanism. The air supply pipe is connected to the feeding pipe.

[0006] Furthermore, the mixing mechanism includes a feed hopper, a mixing hopper, a shut-off valve and a stirring air pipe. The feed hopper is arranged at the top of the mixing hopper, the shut-off valve is arranged between the feed hopper and the mixing hopper for opening or closing the mixing hopper, and the stirring air pipe is arranged at the bottom of the mixing hopper, and the stirring air pipe is connected to the inside of the mixing hopper.

[0007] Furthermore, the injection mechanism comprises a nozzle, which is arranged at one end of the material conveying pipe away from the mixing mechanism.

[0008] Furthermore, the nozzle is at least one of a straight spray and an oblique spray.

[0009] Furthermore, the feed pipe includes a holding pipe and a connecting hose. The connecting hose is arranged at the upstream end of the holding pipe. One end of the connecting hose is connected to the mixing hopper, and the other end of the connecting hose is connected to the holding pipe. The end of the holding pipe away from the connecting hose is connected to the injection mechanism, and the air supply pipe is connected to the connecting hose.

[0010] Furthermore, one end of the holding tube close to the connecting hose is connected with a holding ring for controlling the rotation direction of the holding tube, and the holding tube passes through the center of the holding ring.

[0011] Furthermore, a bronchus is provided on the holding tube, and the bronchus is communicated with the holding tube.

[0012] Furthermore, a liquid supply pipe is provided on the mixing hopper.

[0013] Furthermore, it also includes a frame, the mixing hopper is installed on the frame, and the frame is provided with a ladder and a construction platform, and the ladder and the construction platform are arranged correspondingly.

[0014] Furthermore, a guardrail is provided on the construction platform, and the guardrail is arranged along the periphery of the construction platform.

[0015] The application of the technical solution of the utility model has the following beneficial effects:

[0016] The converter repair device inputs high-pressure gas from the gas supply pipe, carries the repair material delivered from the mixing mechanism to the injection mechanism, and sprays it out from the injection mechanism. When the repair material is sprayed out from the injection mechanism, it is mixed with a large amount of gas, so it is not easy to cause the nozzle to be blocked, which improves the construction efficiency and can use materials with higher viscosity for repair. Compared with the spraying by ordinary injection mechanism, the spraying speed of the repair material carried by the gas is higher, and the repair material has higher kinetic energy. When it hits the converter furnace wall that needs to be repaired, there are fewer air bubbles between it and the furnace wall, and the adhesion is stronger. Secondly, it accelerates the flow of air around the furnace wall or intersection, increases the volatilization of the solvent in the repair material, accelerates the curing of the repair material, and reduces the curing time, which is also conducive to spraying thicker repair materials.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 This is one of the overall structural schematic diagrams of a converter repair device of the utility model;

[0020] Figure 2 This is the second schematic diagram of the overall structure of a converter repairing device of the utility model.

[0021] Among them, 1. mixing mechanism; 11. feeding hopper; 12. mixing hopper; 121. liquid supply pipe; 13. shut-off valve; 14. stirring air pipe; 2. feeding mechanism; 21. feeding pipe; 211. holding pipe; 2111. holding ring; 2112. bronchial tube; 212. connecting hose; 22. air supply pipe; 3. injection mechanism; 31. nozzle; 4. frame; 41. ladder; 42. construction platform; 421. guardrail. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below, and preferred embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] Example:

[0025] See also Figure 1 and Figure 2 The present embodiment provides a converter repairing device, including a mixing mechanism 1 for mixing materials, a feeding mechanism 2 for conveying materials and an injection mechanism 3 for spraying materials, the feeding mechanism 2 includes a feeding pipe 21 and an air supply pipe 22, one end of the feeding pipe 21 is connected to the mixing mechanism 1, the other end of the feeding pipe 21 is connected to the injection mechanism 3, and the air supply pipe 22 is connected to the middle part of the feeding pipe 21.

[0026] Specifically, the mixing mechanism 1 is used to mix the powdered repair material with a solvent, the solvent used here is water, of course, the solvent can also be other liquids used to mix the repair material, the solvent can be one or a mixture of multiple liquids. The delivery pipe 21 is connected to the bottom of the mixing mechanism 1 so that the repair material flows into the delivery pipe 21 under the action of gravity.

[0027] It can be understood that the mixing mechanism 1 mixes the powder material used to repair the converter with water and then transports it to the conveying pipe 21 of the conveying mechanism, and moves toward the injection mechanism 3 under the push of the high-pressure gas provided by the gas supply pipe 22, and sprays out from the injection mechanism 3. The repair material is sprayed to the position in the converter that needs to be repaired through the injection mechanism 3. During the spraying process, because a large amount of gas is carried in the repair material, it is not easy to cause the injection mechanism 3 to be blocked during the spraying. Secondly, a repair material with a higher viscosity can be used. After being sprayed on the furnace wall or the furnace mouth, it is not allowed to flow, and the spraying is more uniform. When the repair material is sprayed out by gas, it has a higher spraying speed than that of the ordinary injection mechanism 3. The repair material has higher kinetic energy. When it hits the converter furnace wall that needs to be repaired, there are fewer air bubbles between it and the furnace wall, and the adhesion is stronger. Secondly, the air flow around the furnace wall or the intersection is accelerated, the solvent in the repair material is volatilized, the repair material is accelerated to solidify, and the curing time is reduced, which is also conducive to spraying thicker repair materials.

[0028] Furthermore, the mixing mechanism 1 includes a feed hopper 11, a mixing hopper 12, a locking valve 13 and a stirring air pipe 14. The feed hopper 11 is arranged at the top of the mixing hopper 12. The locking valve 13 is installed between the feed hopper 11 and the mixing hopper 12 to open or close the mixing hopper 12. The stirring air pipe 14 is arranged at the bottom of the mixing hopper 12, and the stirring air pipe 14 is connected to the inside of the mixing hopper 12. Specifically, the lower part of the mixing hopper 12 is conical, and the feeding pipe 21 is connected to the bottom of the cone, so that the mixed repair material can go down along the cone surface under the action of gravity and smoothly enter the feeding pipe 21. The lower part of the feed hopper 11 is also conical, so that the repair material can enter the mixing hopper 12 conveniently. The upper part of the feed hopper 11 is open, and the stirring air pipe 14 is arranged at the lower part of the mixing hopper 12. A discharge valve is installed at the bottom of the mixing hopper 12 to control the discharge of the repair material in the mixing hopper 12. It can be understood that the powdered material for repair is put into the hopper 11. When putting it in, the locking valve 13 is in an open state, and it enters the mixing hopper 12 after passing through the locking valve 13. The solvent used for mixing can also be put in through the hopper 11. After the materials and solvent for repair are put into the mixing hopper 12, high-pressure gas is introduced from the stirring air pipe 14. Under the blowing action of the gas, the repair material and the solvent are evenly mixed. The stirring pipe also has the function of preventing the bottom of the mixing hopper 12 from being blocked.

[0029] Furthermore, it also includes a frame 4, on which the mixing hopper 12 is installed, and on which a ladder 41 and a construction platform 42 are provided, and the ladder 41 and the construction platform 42 are provided correspondingly. When loading materials, workers enter the construction platform through the ladder 41 to perform operations, which is convenient for operation. Secondly, a guardrail 421 is provided on the construction platform 42, and the guardrail 421 is provided along the periphery of the construction platform 42. This prevents workers from falling from the construction platform 42 during construction and causing safety accidents.

[0030] It is worth noting that lifting rings are provided at the four corners of the frame 4. When the converter repair device needs to be transported, a crane can be used to move it through the lifting rings to facilitate the position movement of the converter repair device.

[0031] Furthermore, the spraying mechanism 3 includes a spray head 31, which is disposed at one end of the feed pipe 21 away from the mixing mechanism 1, and the repair material transported from the feed pipe 21 is sprayed to the position in the converter that needs to be repaired through the spray head 31. The spray head 31 is at least one of a direct spray and an oblique spray, and it should be noted that the spray head 31 may include a plurality of direct sprays and a plurality of oblique sprays. In this embodiment, one direct spray and one oblique spray are used, and the direct spray is used to spray in front of the feed pipe 21, which is conducive to repairing the bottom of the converter, and the oblique spray is used to spray on the side, which is convenient for spraying and repairing the side wall of the converter.

[0032] Furthermore, the feed pipe 21 includes a holding pipe 211 and a connecting hose 212. The connecting hose 212 is arranged at the upstream end of the holding pipe 211. One end of the connecting hose 212 is connected to the mixing hopper 12, and the other end of the connecting hose 212 is connected to the holding pipe 211. The end of the holding pipe 211 away from the connecting hose 212 is connected to the injection mechanism 3. The air supply pipe 22 is connected to the connecting hose 212 and is located at an end close to the mixing hopper 12. The air supply pipe 22 is connected to a valve for air inlet and outlet. The holding pipe 211 is a hard pipe made of steel material. Of course, metal materials such as aluminum alloy and copper alloy can also be used, and non-metallic materials such as carbon fiber can also be used. The connecting hose 212 is a rubber tube, and cotton thread can be added to the rubber tube to enhance the strength of the rubber tube. The worker holds the holding tube 211 and directs the nozzle 31 toward the position that needs to be repaired for spraying repair. During the spraying process, the position and angle of the holding tube 211 can be easily changed due to the existence of the connecting hose 212, which is conducive to repairing the converter.

[0033] Furthermore, a gripping ring 2111 for controlling the rotation direction of the gripping tube 211 is connected to one end of the gripping tube 211 close to the connecting hose 212, and the gripping tube 211 is arranged through the center of the gripping ring 2111. Specifically, the gripping ring 2111 is fixedly connected to the outer wall of the gripping tube 211 through three connecting rods. When the gripping tube 211 needs to be rotated around itself at a certain angle to change the spraying direction of the oblique spray, a large torque needs to be applied to the gripping tube 211. The gripping ring 2111 increases the force arm of the rotation to reduce the force applied to rotate, which is convenient for rotating the horizontal holding tube. In addition, it is also helpful to prevent the gripping tube 211 from moving along its own axis during the construction process.

[0034] Furthermore, a bronchial tube 2112 is provided on the holding tube 211, and the bronchial tube 2112 is connected to the holding tube 211. When the coverage of the spray head 31 needs to be increased, the air flow and air pressure in the holding tube 211 need to be increased. By providing the bronchial tube 2112 at the holding tube 211, the air flow and air pressure in the holding tube 211 can be increased, and a valve is provided on the bronchial tube 2112 to control the air intake and air pressure.

[0035] Furthermore, the mixing hopper 12 is provided with a liquid supply pipe 121, which is arranged at the top of the mixing hopper 12. The powdered repair material is put into the hopper 11, and the solvent is put into the liquid supply pipe 121. A valve is provided on the liquid supply pipe 121 to control the amount of the solvent flowing in. By feeding the solid and the liquid separately, it is convenient to feed the mixing hopper 12.

[0036] The working principle of the present embodiment is as follows: first, open the shut-off valve 13 to connect the feed hopper 11 with the mixing hopper 12, put the powder material for repairing the converter from the feed hopper 11, and enter the mixing hopper 12 through the shut-off valve 13, input water into the mixing hopper 12 from the liquid supply pipe 121, and when enough powder material and enough water are loaded into the mixing hopper 12, input high-pressure gas from the stirring air pipe 14 at the bottom of the mixing hopper 12, and the gas moves upward from the bottom of the mixing hopper 12 and is discharged from the upper shut-off valve 13 and the feed hopper 11. During the movement, the gas drives the powder material and water in the mixing hopper 12 to move, so that the powder material and water are fully mixed. After the powder material and water are evenly mixed, the locking valve 13 is closed, the discharge valve at the bottom of the mixing hopper 12 and the valve of the air supply pipe 22 are opened, and the repair material passes through the connecting hose 212, the holding tube 211 and the nozzle 31 in sequence under the driving action of the high-pressure gas, and is sprayed from the nozzle 31 to the place in the converter that needs to be repaired. When it is necessary to increase the spraying range, the valve of the bronchial tube 2112 is opened to increase the gas flow and flow rate, so that the spraying range of the repair material sprayed from the nozzle 31 is larger. By rotating the holding ring 2111, the spraying direction of the oblique spray in the nozzle 31 is changed, so that the repair material can be conveniently sprayed to the position where the repair is required.

[0037] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A converter repair device, characterized in that: It comprises a mixing mechanism (1) for mixing materials, a feeding mechanism (2) for conveying materials, and a spraying mechanism (3) for spraying materials. The feeding mechanism (2) comprises a feeding pipe (21) and an air supply pipe (22); one end of the feeding pipe (21) is connected to the mixing mechanism (1); the other end of the feeding pipe (21) is connected to the injection mechanism (3); and the air supply pipe (22) is connected to the feeding pipe (21).

2. A converter repairing device according to claim 1, characterized in that: The mixing mechanism (1) comprises a feeding hopper (11), a mixing hopper (12), a locking valve (13) and a stirring air pipe (14). The feed hopper (11) is arranged at the top of the mixing hopper (12), the shut-off valve (13) is arranged between the feed hopper (11) and the mixing hopper (12) for opening or closing the mixing hopper (12), the stirring air pipe (14) is arranged at the lower part of the mixing hopper (12), and the stirring air pipe (14) is connected to the inside of the mixing hopper (12).

3. A converter repairing device according to claim 1, characterized in that: The injection mechanism (3) comprises a nozzle (31), and the nozzle (31) is arranged at an end of the material conveying pipe (21) away from the mixing mechanism (1).

4. A converter repairing device according to claim 3, characterized in that: The nozzle (31) is at least one of a straight spray and an oblique spray.

5. A converter repairing device according to claim 2, characterized in that: The conveying pipe (21) comprises a holding pipe (211) and a connecting hose (212), wherein the connecting hose (212) is arranged at the upstream end of the holding pipe (211), one end of the connecting hose (212) is connected to the mixing hopper (12), the other end of the connecting hose (212) is connected to the holding pipe (211), the end of the holding pipe (211) away from the connecting hose (212) is connected to the injection mechanism (3), and the air supply pipe (22) is connected to the connecting hose (212).

6. A converter repairing device according to claim 5, characterized in that: One end of the holding tube (211) close to the connecting hose (212) is connected to a holding ring (2111) for controlling the rotation direction of the holding tube (211), and the holding tube (211) passes through the center of the holding ring (2111).

7. A converter repairing device according to claim 5, characterized in that: The holding tube (211) is also provided with a bronchus (2112), and the bronchus (2112) is in communication with the holding tube (211).

8. A converter repairing device according to claim 2, characterized in that: The mixing hopper (12) is provided with a liquid supply pipe (121).

9. A converter repairing device according to any one of claims 5 to 8, characterized in that: It also includes a frame (4), the mixing hopper (12) is installed on the frame (4), and a ladder (41) and a construction platform (42) are provided on the frame (4), and the ladder (41) and the construction platform (42) are arranged correspondingly.

10. A converter repairing device according to claim 9, characterized in that: The construction platform (42) is provided with a guardrail (421), and the guardrail (421) is arranged along the periphery of the construction platform (42).

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