Automatic gunning car for converter refractory repair and maintenance

Abstract

This invention discloses an automatic spraying vehicle for repairing and maintaining converter refractory materials, comprising a walking system and a spraying system above it, as well as a video monitoring system, a flow control system, and a data recording and query system, possessing information-based and intelligent features. The automatic spraying vehicle can achieve multi-stage gradient flow of the spraying material, employing a foldable casting pipe; during non-working periods, the foldable casting pipe folds backward; during working periods, the foldable casting pipe folds forward and connects with the front end of the conveying rigid pipe. The video monitoring system is used to monitor at least the repair and maintenance status of converter refractory materials. The flow control system includes at least a flow meter for monitoring the spraying volume and a material blocking valve that can be closed to prevent material discharge, and has one or both control modes of on-demand spraying and quantitative spraying. The data recording and query system supports recording and querying the spraying location and spraying volume of converter refractory material repair and maintenance operations, forming a maintenance history.

Description

Technical Field

[0001] This invention relates to the field of metallurgical equipment automation technology, specifically to an automatic spraying vehicle for repairing and maintaining refractory materials in converters, suitable for intelligent pouring and repair of refractory materials inside the converter during steelmaking. Background Technology

[0002] Metallurgical furnaces are crucial equipment in the steel industry, serving as industrial furnaces for heat treatment of various materials or workpieces during metallurgical production. Metallurgical furnaces are expensive, and their maintenance and repair are essential operations in the steel metallurgical industry. Converter refractory materials are susceptible to slag corrosion under prolonged high-temperature operation, requiring regular repairs. Traditional repair methods rely on manual labor, which has the following drawbacks: 1. Poor safety: Workers need to be in close contact with the high-temperature furnace opening, which poses a risk of burns; 2. Low efficiency: Manual pouring results in poor uniformity, requiring repeated repairs, which is time-consuming and material-intensive; 3. Insufficient precision: Unable to accurately control the pouring thickness and position, resulting in poor quality. 4. Short service life; uneven use of repair refractory material affects service life.

[0003] Existing semi-automatic casting equipment suffers from problems such as insufficient mobility, low positioning accuracy, and inability to adapt to complex furnace conditions.

[0004] The patent specification with publication number CN1579722A discloses a construction method for steel fiber castable. It uses a jet-casting machine, a piston pump, and a specially designed combination of rigid pipe and flexible hose to transport a self-flowing, castable castable mixed with water or other liquid to the construction location. The castable is a steel fiber castable, and the construction method can be either jet or wet jet.

[0005] Patent specification CN102322741A discloses a remote-controlled wet spraying repair process and apparatus for converters. A continuous mixer is used to pre-mix the material with water, resulting in a highly fluid material. This material continuously enters a gravity-flow material distribution device, from which it is uniformly conveyed into a conveying pipeline and then blown out by high-pressure gas. One end of the conveying pipeline is connected to a high-pressure gas source, and the other end is connected to a spray gun. A quick-setting agent is introduced near the spray gun. The forward, backward, and rotation movements of the spray gun, as well as the forward, backward, and turning movements of the spraying vehicle, can all be remotely controlled. The spray gun is equipped with a water-cooling protection device to prevent damage from high temperatures.

[0006] Patent specification CN110923391A discloses a converter taphole pumping and casting repair device and method. The converter taphole pumping and casting repair device includes a transport platform, a support frame fixed to the transport platform, and a material storage device fixed to the support frame. The material storage device is connected to the inlet of the pumping device via a conveying device, and the outlet of the pumping device is connected to an insulated chute via a discharge pipe. Both the conveying device and the pumping device are fixed to the transport platform. The conveying device is also connected to a high-pressure air source via a high-pressure air pipe. Summary of the Invention

[0007] This invention provides an automatic spraying vehicle for repairing and maintaining refractory materials in converters. It is suitable for the pouring and repair of refractory materials in the converter steelmaking process and is characterized by information technology and intelligence.

[0008] The specific technical solution is as follows: An automatic spraying vehicle for repairing and maintaining converter refractory materials includes a walking system and a spraying system above it, as well as a video monitoring system, a flow control system, and a data recording and query system. The spray patching system includes a storage silo, a turbo pump, delivery hoses, and a hydraulic mechanism; The storage silo is used to store at least the spraying material, and its interior bottom is lower at the front and higher at the back. The turbine pump is located at the front end of the storage silo and connected to the discharge port at the front end of the storage silo; during operation, the turbine pump is connected to the rear end of the conveying rigid pipe through a hose; The hydraulic mechanism includes a hydraulic vertical telescopic arm and a hydraulic front and rear telescopic arm; the conveying rigid pipe and the hydraulic front and rear telescopic arms are arranged in the front and rear directions and installed side by side. The hydraulic front and rear telescopic arms are used to control the front and rear telescopic movement of the conveying rigid pipe. The front part of the hydraulic front and rear telescopic arms is hinged and fixed, and the rear part is connected to the hydraulic vertical telescopic arm. During the working period, the hydraulic front and rear telescopic arms, together with the conveying rigid pipe, can form a front low and rear high shape under the control of the hydraulic vertical telescopic arms, realizing the multi-stage gradient flow of the sprayed material. The front end of the conveying rigid pipe is hinged to a foldable casting pipe; during non-working periods, the foldable casting pipe is folded backward; during working periods, the foldable casting pipe is folded forward and connected to the front end of the conveying rigid pipe. The video surveillance system is at least used to monitor the repair and maintenance of converter refractory materials; The flow control system includes at least a flow meter for monitoring the amount of spraying and a choke valve that can be closed to prevent material discharge, and has one or two of the following control modes: Mode 1, the video monitoring system and the choke valve are interlocked, when the video monitoring system detects that the repair and maintenance at the spraying location is completed, the choke valve closes and the turbine pump stops running; Mode 2, the flow meter and the choke valve are interlocked, when the flow meter detects that the amount of spraying reaches the set amount, the choke valve closes and the turbine pump stops running. The data recording and query system supports recording and querying the spraying location and amount of refractory repair and maintenance operations in converters, forming a maintenance history.

[0009] Of the above control methods, method one can achieve on-demand spraying operations, while method two can achieve quantitative spraying operations.

[0010] The aforementioned automatic spraying vehicle features a compact structure, minimal footprint, and flexible operation. During non-working periods, the hose can be removed or left in place; the foldable casting pipe folds backward, and the conveying rigid pipe retracts, without occupying additional lateral space. During working periods, due to the high converter temperature, the foldable casting pipe folds forward in conjunction with a hydraulic mechanism to advance the conveying rigid pipe, allowing the automatic spraying vehicle to be kept away from the converter and protected from damage by high-temperature heat radiation.

[0011] This invention's automatic spraying vehicle does not require high-pressure gas power such as compressed air to propel the spraying material. The storage bin can contain room-temperature liquid spraying material, which can flow by gravity at room temperature during operation. At the same time, it is equipped with a turbine pump to transport the spraying material, resulting in a large spraying flow rate, high efficiency, short operation time, and long service life. The spraying material itself does not require accelerators or other additives, which can reduce raw material costs. For example, during operation, the bottom of the storage silo slopes downwards from front to back, forming a first-level ramp that allows the repair material to flow downwards from back to front. The height difference between the turbine pump and the conveying rigid pipe makes the hose a second-level ramp that allows the repair material to flow downwards from front to back. Under the control of the hydraulically operated telescopic arms, the conveying rigid pipe forms a third-level ramp that slopes downwards from front to back. This third-level ramp extends further to the converter via a foldable casting pipe, allowing the repair material to flow downwards from back to front into the converter for repair and maintenance. Thus, the repair material first flows down the first-level ramp to the discharge port at the front of the storage silo, and then flows sequentially through the hose, conveying rigid pipe, and foldable casting pipe via the turbine pump, ultimately achieving a multi-level gradient flow of the repair material through the storage silo, turbine pump, hose, conveying rigid pipe, and foldable casting pipe. This multi-level gradient flow method of the present invention helps to reduce the accumulation and residue of the repair material during its flow within a limited floor space. The hydraulic telescopic booms and hydraulic front and rear telescopic booms can drive the conveying rigid pipe to extend, retract, and tilt to precisely adjust the pouring position, thereby achieving the purpose of pouring at the accurate position inside the converter furnace.

[0012] The automatic spraying vehicle for repairing and maintaining converter refractory materials has a flap valve as the material blocking valve, which can be installed at the outlet of the foldable casting pipe.

[0013] In some embodiments, a video monitoring system is installed at the front of the automatic spraying vehicle, including a video camera, a protective cover, and an air-cooling device. The protective cover is used to protect the video camera at least, and the air-cooling device is used to cool the video camera at least. The video camera is used to monitor the repair and maintenance of the converter refractory. The video camera is interlocked with a material blocking valve. When the video camera detects that the repair and maintenance at the spraying location is complete, the material blocking valve closes, and the turbine pump stops operating. The air-cooling device can cool the video camera by introducing low-temperature compressed air, making it suitable for use in high-temperature environments. The video camera is preferably installed at an angle that allows a view of the outlet of the foldable casting pipe.

[0014] In some embodiments, the foldable casting pipe includes three sections, wherein the front end of the first section is hinged to the foldable casting pipe, the rear end of the first section is hinged to the rear end of the second section, and the front end of the second section is hinged to the front end of the third section; during non-working periods, the three sections of the foldable casting pipe are folded; during working periods, the sections of the foldable casting pipe are sequentially connected front to back. In the non-working state, the foldable casting pipe is in a three-section folded state to save space, and in the working state, it can be fully unfolded and connected to the delivery rigid pipe.

[0015] In some embodiments, the spraying system further includes one or more stirring mechanisms arranged sequentially along the front-to-back direction, for at least stirring the spraying material in the storage hopper. The stirring mechanism includes a battery pack, a drive motor, a reducer, and a stirring paddle. The drive motor is connected to the stirring paddle located inside the storage hopper via the reducer. One or more stirring paddles are arranged sequentially along the front-to-back direction. The battery pack provides power to the drive motor, enabling the stirring paddle to rotate continuously to prevent segregation of the spraying material.

[0016] Preferably, in the automatic spraying vehicle used for repairing and maintaining converter refractory materials, the turbine pump is always positioned above the conveying rigid pipe.

[0017] In some embodiments, the turbopump is driven by a delivery motor. Furthermore, the spraying system also includes a control mechanism. Even further, there are two turbopumps and two delivery motors, both mounted at the front end of the storage hopper, with the control mechanism switching between the main and backup pumps. Specifically, the main and backup pumps can be switched via the control mechanism according to the actual working conditions.

[0018] In some embodiments, the automatic spray patching vehicle is operated remotely and / or via a control panel.

[0019] In some embodiments, the walking system includes a power battery and a walking mechanism. The power battery provides power to the automated spray repair vehicle, enabling it to move freely without a cable. Furthermore, the walking mechanism includes a walking motor and a tracked chassis. The walking motor controls the tracked chassis, thereby controlling the automated spray repair vehicle to perform one or more of the following movements: forward, backward, and turning in place. The tracked chassis allows for flexible forward and backward movement and turning in place. Combined with the power battery and remote control operation, this significantly reduces environmental limitations during use.

[0020] Optionally, the power battery is a lithium iron phosphate battery, which has good thermal stability and can adapt to harsh working environments.

[0021] In some embodiments, the spray patching system further includes a cleaning mechanism. Further, a discharge gate is provided at the discharge port at the front end of the storage silo; the discharge gate is controlled by a hydraulic mechanism; one side of the discharge gate is the storage silo, and the other side is a turbine pump; a flushing head is provided between the discharge gate and the turbine pump, and the flushing head is connected to the cleaning mechanism. Residual spray patching material between the discharge gate and the turbine pump can be cleaned by the cleaning mechanism and the flushing head. Preferably, the cleaning mechanism is equipped with a high-pressure water gun, which can clean residual spray patching material, greatly shortening the cleaning time after equipment use and improving cleaning efficiency.

[0022] In some embodiments, the hydraulic mechanism further includes a hydraulic cylinder, which is fixed below the storage bin and connected to a discharge gate. The discharge gate switch is located on one side of the storage bin and controls the opening and closing of the discharge gate.

[0023] In some embodiments, the outer wall of the foldable casting pipe is wrapped with heat-insulating material to reduce the impact of high temperatures during operation on the foldable casting pipe.

[0024] In some embodiments, both the hydraulic upper and lower telescopic booms and the hydraulic front and rear telescopic booms are equipped with air pipes, which can be connected to cooling gas during operation to reduce the temperature and further reduce the impact of high temperature on the spraying system.

[0025] The front of the automatic spraying vehicle is connected to a high-temperature resistant heat insulation plate with a size larger than the height and width of the vehicle body. During the working period, it can reduce the impact of high-temperature heat radiation on the vehicle body. In addition, a flip door is provided at the corresponding position of the conveying hard pipe, which will not affect the extension, retraction and tilting of the conveying hard pipe.

[0026] Compared with the prior art, the beneficial effects of this invention are as follows: 1. The automatic spraying vehicle of this invention has a compact structure, occupies little space, and is flexible in use. During non-working periods, the hose can be removed or left in place; the foldable casting pipe folds backward, and the conveying rigid pipe retracts, without occupying extra lateral space. During working periods, due to the high temperature of the converter, the foldable casting pipe folds forward in conjunction with a hydraulic mechanism to move the conveying rigid pipe forward, allowing the main body of the automatic spraying vehicle to be away from the converter and avoid damage from high-temperature heat radiation.

[0027] 2. The multi-stage gradient flow method of this invention helps reduce the accumulation of spray material residue within a limited floor space. Furthermore, during non-working periods, the connection between the hose and the delivery rigid pipe can be disconnected, or left connected, and residual spray material can be rinsed away using a cleaning mechanism and flushing head to prevent damage to the turbine pump from residual spray material.

[0028] 3. The automatic spraying vehicle of this invention does not require high-pressure gas power such as compressed air to drive the spraying material. The storage bin can contain room temperature liquid spraying material, which can flow by gravity at room temperature during operation. At the same time, it is equipped with a turbine pump to transport the spraying material. The spraying flow is large, the efficiency is high, the time is short, and the service life is long. The spraying material itself does not require accelerators, which can reduce the cost of raw materials.

[0029] 4. The automatic refractory repair vehicle of this invention is information-based and intelligent, equipped with a video monitoring system, a flow control system, and a data recording and query system. The video monitoring system is used to monitor the repair and maintenance of converter refractory materials. The flow control system includes a flow meter for monitoring the repair volume and a shut-off valve that can be closed to prevent material discharge, and has one or two of the following control modes: Mode 1, the video monitoring system and the shut-off valve are interlocked; when the video monitoring system detects that the repair and maintenance at the repair location is completed, the shut-off valve closes, and the turbine pump stops running, thereby realizing on-demand repair operation; Mode 2, the flow meter and the shut-off valve are interlocked; when the flow meter detects that the repair volume reaches the set amount, the shut-off valve closes, and the turbine pump stops running, thereby realizing quantitative repair operation. The data recording and query system supports recording and querying the repair location and repair volume of converter refractory material repair and maintenance operations, forming a maintenance history. Attached Figure Description

[0030] Figure 1 This is a front view schematic diagram of the automatic spraying vehicle used for repairing and maintaining converter refractory materials in a specific embodiment.

[0031] Figure 2 This is a side view of the automatic spraying vehicle used for repairing and maintaining converter refractory materials in a specific embodiment.

[0032] Figure 3 This is a top view schematic diagram of the automatic spraying vehicle used for repairing and maintaining converter refractory materials in a specific embodiment.

[0033] Figure 4 This is a schematic diagram of the foldable casting pipe of the automatic spraying vehicle used for repairing and maintaining converter refractory materials in a specific embodiment. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] See Figures 1 to 3 An automatic spraying vehicle for repairing and maintaining converter refractory materials includes a walking system 1 and a spraying system 2 above it, as well as a video monitoring system 16, a flow control system, and a data recording and query system.

[0036] The automatic paint repair vehicle is operated remotely and / or via a control panel. The walking system 1 includes a power battery 15 and a walking mechanism. The power battery 15 is a lithium iron phosphate battery, which has good thermal stability and can withstand harsh working environments. The power battery 15 provides at least the power to drive the automatic paint repair vehicle, allowing it to move freely without a cable. The walking mechanism includes a walking motor 8 and a tracked chassis 9. The walking motor 8 controls the tracked chassis 9, thereby controlling the automatic paint repair vehicle to perform one or more of the following movements: forward, backward, and turning in place. The tracked chassis 9 can flexibly move forward, backward, and turn in place. Combined with the power battery 15 and remote control operation, this significantly reduces environmental limitations during use.

[0037] The spraying system 2 includes a storage bin 3, a mixing mechanism 5, a turbine pump 7, a control mechanism 10, a conveying rigid pipe 14, a hydraulic mechanism 11, and a cleaning mechanism 12.

[0038] The storage bin 3 is used to store at least the spraying material, and its interior bottom is lower at the front and higher at the back.

[0039] The mixing mechanism 5 is used to mix the sprayed material in the storage silo 3. The mixing mechanism 5 includes a battery pack, a drive motor, a reducer, and a mixing paddle. The drive motor is connected to the mixing paddle through the reducer. There are three mixing paddles, which are evenly arranged in sequence along the front-back direction inside the storage silo 3. The battery pack provides power to the drive motor, so that the mixing paddle can rotate continuously to avoid segregation of the sprayed material.

[0040] A turbine pump 7 is located at the front end of the storage silo 3 and connected to the discharge port at the front end of the storage silo 3. The turbine pump 7 is driven by a conveying motor 4. There are two turbine pumps 7 and two conveying motors 4, both installed at the front end of the storage silo 3, and the main / standby pump operation is switched via a control mechanism 10. Specifically, the main / standby pump operation can be switched via the control mechanism 10 according to the actual working conditions. During operation, the turbine pump 7 is connected to the rear end of the conveying rigid pipe 14 via a flexible hose. The turbine pump 7 is always positioned above the conveying rigid pipe 14.

[0041] The hydraulic mechanism 11 includes a hydraulic vertical telescopic arm and a hydraulic front-to-back telescopic arm 13. The conveying rigid pipe 14 and the hydraulic front-to-back telescopic arm 13 are both arranged longitudinally and installed side-by-side. The hydraulic front-to-back telescopic arm 13 is used to control the forward and backward extension and retraction of the conveying rigid pipe 14. The front of the hydraulic front-to-back telescopic arm 13 is hinged and fixed, while the rear is connected to the hydraulic vertical telescopic arm. During operation, the hydraulic front-to-back telescopic arm 13, along with the conveying rigid pipe 14, can form a front-low and rear-high gradient under the control of the hydraulic vertical telescopic arm, achieving a multi-stage gradient flow of the sprayed material. Both the hydraulic vertical telescopic arm and the hydraulic front-to-back telescopic arm 13 are equipped with air pipes, which can be connected to cooling gas during operation for temperature reduction, further reducing the impact of high temperatures on the spraying system 2.

[0042] The front end of the conveying rigid pipe 14 is hinged to a foldable casting pipe 6. See also Figure 4 The foldable casting pipe 6 comprises three sections. The front end of the first section is hinged to the foldable casting pipe 6, the rear end of the first section is hinged to the rear end of the second section, and the front end of the second section is hinged to the front end of the third section. During non-working periods, the foldable casting pipe 6 folds backward, with all three sections folded. During working periods, the sections of the foldable casting pipe 6 are sequentially joined front to back, and the foldable casting pipe 6 folds forward to join the front end of the conveying rigid pipe 14. The outer wall of the foldable casting pipe 6 is wrapped with heat-insulating material to reduce the impact of high temperatures during operation on the foldable casting pipe 6.

[0043] In addition, a discharge gate is installed at the discharge port at the front end of the storage silo 3. The discharge gate is controlled by a hydraulic mechanism 11. The storage silo 3 is on one side of the discharge gate, and the turbine pump 7 is on the other side. A flushing head is installed between the discharge gate and the turbine pump 7, and the flushing head is connected to a cleaning mechanism 12. Residual sprayed material between the discharge gate and the turbine pump 7 can be flushed and cleaned by the cleaning mechanism 12 and the flushing head. The hydraulic mechanism 11 also includes a hydraulic cylinder, which is fixed below the storage silo 3 and connected to the discharge gate. The discharge gate switch is located on one side of the storage silo 3 and controls the opening and closing of the discharge gate.

[0044] The video monitoring system 16 is used at least to monitor the repair and maintenance of converter refractory materials and can be installed at the front end of the automatic spraying vehicle. The video monitoring system 16 includes a video camera, a protective cover, and an air-cooling device. The protective cover is used at least to protect the video camera, and the air-cooling device is used at least to cool the video camera. The video camera is used at least to monitor the repair and maintenance of converter refractory materials. The video camera is installed at an angle that allows a view of the outlet of the foldable casting pipe 6.

[0045] The flow control system includes at least a flow meter for monitoring the spraying volume and a flap valve that can be closed to stop the discharge. It has one or both of the following control modes: Mode 1: A video camera and the flap valve are interlocked; when the video camera detects that the repair / maintenance at the spraying location is complete, the flap valve closes, and the turbine pump 7 stops operating. Mode 2: The flow meter and the flap valve are interlocked; when the flow meter detects that the spraying volume has reached a set amount, the flap valve closes, and the turbine pump 7 stops operating. The flap valve is located at the discharge port of the foldable casting pipe 6.

[0046] The data recording and query system supports recording and querying the spraying location and amount of refractory repair and maintenance operations in converters, forming a maintenance history.

[0047] In this embodiment, the front of the automatic spraying vehicle is also connected to a high-temperature heat insulation plate 17 that is slightly larger than the height and width of the vehicle body. During the working period, it can reduce the impact of high-temperature heat radiation on the vehicle body. In addition, a flip door is provided at the corresponding position of the conveying hard pipe 14, which will not affect the extension, retraction and tilting of the conveying hard pipe 14.

[0048] The aforementioned automatic spraying vehicle features a compact structure, minimal footprint, and flexible operation. During non-working periods, the hose can be removed or left in place; the foldable casting pipe 6 folds backward, and the conveying rigid pipe 14 retracts, without occupying additional lateral space. Furthermore, during non-working periods, the connection between the hose and the conveying rigid pipe 14 can be disconnected or left in place, allowing the cleaning mechanism 12 and flushing head to clean away residual spraying material, preventing damage to the turbine pump 7. During working periods, due to the high converter temperature, the foldable casting pipe 6 folds forward in conjunction with the hydraulic mechanism 11 to advance the conveying rigid pipe 14, keeping the automatic spraying vehicle away from the converter and preventing damage from high-temperature heat radiation.

[0049] The aforementioned automatic spraying vehicle does not require high-pressure gas power such as compressed air to drive the spraying material. The storage bin 3 can contain room temperature liquid spraying material, which can flow by gravity at room temperature during operation. At the same time, it is equipped with a turbine pump 7 to transport the spraying material. The spraying flow rate is large, the efficiency is high, the time is short, and the service life is long. The spraying material itself does not require accelerators, which can reduce raw material costs.

[0050] During operation, the bottom of the storage silo 3, with its lower front and higher back, forms a first-level slope that allows the repair material to flow downwards from back to front. The height difference between the turbine pump 7 and the conveying rigid pipe 14 makes the hose a second-level slope that allows the repair material to flow downwards from front to back. Under the control of the hydraulic telescopic arms, the conveying rigid pipe 14 forms a third-level slope, with its lower front and higher back. This third-level slope extends further to the converter through the foldable casting pipe 6, allowing the repair material to flow downwards from back to front into the converter for repair and maintenance. Thus, the repair material first flows down the first-level slope to the discharge port at the front of the storage silo 3, and then flows sequentially through the hose, the conveying rigid pipe 14, and the foldable casting pipe 6 via the turbine pump 7. Ultimately, the repair material achieves a multi-level gradient flow through the storage silo 3, turbine pump 7, hose, conveying rigid pipe 14, and foldable casting pipe 6. This multi-level gradient flow method of the present invention helps to reduce the accumulation and residue of the repair material during its flow within a limited floor space. The hydraulic telescopic arms 13 and the hydraulic front and rear telescopic arms 13 can drive the conveying rigid pipe 14 to perform telescopic and pitching operations to precisely adjust the pouring position, thereby achieving the purpose of accurate pouring inside the converter furnace.

[0051] Furthermore, it should be understood that after reading the above description of the present invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An automatic spraying vehicle for repairing and maintaining refractory materials in converters, characterized in that, This includes the walking system and the spraying system above it, as well as the video surveillance system, the flow control system, and the data recording and query system; The spray patching system includes a storage silo, a turbo pump, delivery hoses, and a hydraulic mechanism; The storage silo is used to store at least the spraying material, and its interior bottom is lower at the front and higher at the back. The turbine pump is located at the front end of the storage silo and connected to the discharge port at the front end of the storage silo; during operation, the turbine pump is connected to the rear end of the conveying rigid pipe through a hose; The hydraulic mechanism includes a hydraulic vertical telescopic arm and a hydraulic front and rear telescopic arm; the conveying rigid pipe and the hydraulic front and rear telescopic arms are arranged in the front and rear directions and installed side by side. The hydraulic front and rear telescopic arms are used to control the front and rear telescopic movement of the conveying rigid pipe. The front part of the hydraulic front and rear telescopic arms is hinged and fixed, and the rear part is connected to the hydraulic vertical telescopic arm. During the working period, the hydraulic front and rear telescopic arms, together with the conveying rigid pipe, can form a front low and rear high shape under the control of the hydraulic vertical telescopic arms, realizing the multi-stage gradient flow of the sprayed material. The front end of the conveying rigid pipe is hinged to a foldable casting pipe; during non-working periods, the foldable casting pipe is folded backward; during working periods, the foldable casting pipe is folded forward and connected to the front end of the conveying rigid pipe. The video surveillance system is at least used to monitor the repair and maintenance of converter refractory materials; The flow control system includes at least a flow meter for monitoring the amount of spraying and a choke valve that can be closed to prevent material discharge, and has one or two of the following control modes: Mode 1, the video monitoring system and the choke valve are interlocked, when the video monitoring system detects that the repair and maintenance at the spraying location is completed, the choke valve closes and the turbine pump stops running; Mode 2, the flow meter and the choke valve are interlocked, when the flow meter detects that the amount of spraying reaches the set amount, the choke valve closes and the turbine pump stops running. The data recording and query system supports recording and querying the spraying location and amount of refractory repair and maintenance operations in converters, forming a maintenance history.

2. The automatic spray patching vehicle according to claim 1, characterized in that, The material blocking valve is a flap valve, which is installed at the outlet of the foldable casting pipe; The video monitoring system is installed at the front of the automatic spraying vehicle and includes a video camera, a protective cover and an air cooling device. The protective cover is used to protect the video camera at least, and the air cooling device is used to cool the video camera at least. The video camera is used to monitor the repair and maintenance of the converter refractory. The video camera and the material blocking valve are interlocked. When the video camera monitors that the repair and maintenance of the spraying position is completed, the material blocking valve closes and the turbine pump stops running. The angle at which the video camera is installed allows a view of the outlet of the foldable casting pipe.

3. The automatic spray patching vehicle according to claim 1, characterized in that, The foldable casting pipe consists of three sections. The front end of the first section is hinged to the foldable casting pipe, the rear end of the first section is hinged to the rear end of the second section, and the front end of the second section is hinged to the front end of the third section. During non-working periods, the three sections of the foldable casting pipe are folded. During working periods, the sections of the foldable casting pipe are connected sequentially front to back.

4. The automatic spray patching vehicle according to claim 1, characterized in that, The spraying system also includes one or more mixing mechanisms arranged sequentially in the front-to-back direction, for at least mixing the spraying material in the storage silo; The stirring mechanism includes a battery pack, a drive motor, a reducer, and a stirring paddle. The drive motor is connected to the stirring paddle located inside the storage silo via the reducer. One or more stirring paddles are arranged sequentially in the front-to-back direction. The battery pack provides power to the drive motor.

5. The automatic spray patching vehicle according to claim 1, characterized in that, The turbine pump is driven by a delivery motor; The spray patch system also includes a control mechanism; There are two turbine pumps and two conveyor motors, both installed at the front end of the storage silo, and the main / standby pump is switched by a control mechanism.

6. The automatic spray patching vehicle according to claim 1, characterized in that, The remote control operation and / or control panel operation of the automatic spray repair vehicle; The walking system includes a power battery and a walking mechanism, wherein the power battery is used to provide walking power for the automatic spray patching vehicle; The walking mechanism includes a walking motor and a tracked chassis. The walking motor is used to control the tracked chassis and thus control the automatic spraying vehicle to perform one or more of the following movements: forward, backward, and turning in place. The power battery is a lithium iron phosphate battery.

7. The automatic spray patching vehicle according to claim 1, characterized in that, The spray patch system also includes a cleaning mechanism; A discharge gate is installed at the discharge port at the front end of the storage silo; the discharge gate is controlled by a hydraulic mechanism; the storage silo is on one side of the discharge gate and a turbine pump is on the other side; a flushing head is installed between the discharge gate and the turbine pump, and the flushing head is connected to a cleaning mechanism. The cleaning system is equipped with a high-pressure water gun.

8. The automatic spray patching vehicle according to claim 7, characterized in that, The hydraulic mechanism also includes a hydraulic cylinder, which is fixed below the storage silo and connected to the discharge gate. The discharge gate switch is located on one side of the storage silo and controls the opening and closing of the discharge gate.

9. The automatic spray patching vehicle according to claim 1, characterized in that, The outer wall of the foldable casting pipe is wrapped with heat-insulating material; Both the hydraulic telescopic boom and the hydraulic front and rear telescopic boom are equipped with air pipes, which can be connected to cooling gas for cooling during operation.

10. The automatic spray patching vehicle according to claim 1, characterized in that, The front of the automatic spray repair vehicle is connected to a high-temperature resistant heat insulation plate with a size larger than the height and width of the vehicle body, and a flip door is provided at the corresponding delivery hard pipe position.

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