Automatic spraying device and spraying method

Abstract

The invention provides an automatic spraying device which comprises a conveying platform and a spraying mechanism, the spraying mechanism is arranged above the conveying platform through a support, the spraying mechanism comprises a spray head assembly and at least two mixing pools, the spray head assembly is communicated with all the mixing pools through pipelines, a valve is arranged between the spray head assembly and each mixing pool, and the spray head assembly is communicated with the mixing pools through pipelines. The device has the advantages that the spray head assembly is communicated with the at least two mixing pools through the pipelines, and the valve is arranged between each mixing pool and the spray head assembly to control the on-off of the pipelines. By means of the design, the spraying process can be conducted in a switching mode, sustainability is achieved, and meanwhile the design can adapt to different kinds of ore and different spraying requirements. By adjusting opening and closing of the valve and the concentration and components of the solution in the mixing pool, customized spraying of different ores can be achieved, and the diversified requirements in the blast furnace smelting process are met.

Description

Technical Field

[0001] The present invention relates to the technical field of ore processing, and particularly to an automatic spraying device and a spraying method. Background Art

[0002] With the continuous progress of blast furnace smelting technology, the quality requirements for raw materials have become increasingly strict. However, the quality of concentrate resources has gradually declined, manifested as high silicon dioxide content and other impurity elements. To address this challenge, a large amount of high-quality ore powder has been introduced. These ore powders are characterized by high grade, low SiO2 and low impurity elements, mainly hematite, and mixed with a certain proportion of limonite, such as FMG powder and Yangdi powder. Currently, the usage ratio of imported ore is maintained at approximately 75%, for batching and sintering.

[0003] During the blast furnace smelting process, when the sinter enters the temperature range of 400°C to 600°C, the iron oxide in it will be reduced to magnetite. This low-temperature phase change process will cause volume expansion, which in turn makes the sinter powder and reduces its strength. Eventually, it affects the permeability of the upper burden column in the blast furnace, and it is necessary to spray calcium chloride solution on the sinter. However, there is no dedicated spraying device currently, and manual spraying on minerals is required. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide an automatic spraying device to solve the technical problem that the existing technology cannot automatically spray calcium chloride solution on sinter.

[0005] To achieve the above object and other related objects, the present invention provides an automatic spraying device, including:

[0006] A conveying platform;

[0007] A spraying mechanism, the spraying mechanism is arranged above the conveying platform through a bracket. The spraying mechanism includes a nozzle assembly and at least two mixing tanks. The nozzle assembly is connected to all the mixing tanks through pipelines. A valve is provided between the nozzle assembly and each mixing tank, and the valve is used to control the on and off of the pipeline;

[0008] The nozzle assembly faces the conveying platform.

[0009] The advantage of adopting the above technical solution is that the nozzle assembly is connected to at least two mixing tanks through pipelines, and a valve is provided between each mixing tank and the nozzle assembly to control the on and off of the pipeline. Such a design makes the spraying process switchable and sustainable. At the same time, this design can adapt to different types of ores and different spraying requirements. By adjusting the opening and closing of the valves, as well as the concentration and composition of the solution in the mixing tanks, customized spraying of different ores can be achieved to meet the diverse needs in the blast furnace smelting process.

[0010] Optionally, a water level gauge is further provided on the outer wall of the mixing tank, and the water level gauge is used to observe the water level in the mixing tank.

[0011] Optionally, the water level gauge is a magnetic flap water level gauge.

[0012] Optionally, a stirrer is provided in the mixing tank.

[0013] Optionally, the stirrer includes a plurality of air inlet pipes, all of the air inlet pipes are arranged at the bottom of the mixing tank, one end of the air inlet pipe extends into the mixing tank, and the other end of the air inlet pipe is connected to a high-pressure air source.

[0014] Optionally, a check valve is provided on the pipeline between the air inlet pipe and the high-pressure air source.

[0015] Optionally, a cover plate is further provided above the mixing tank, and a water inlet window is provided on the cover plate.

[0016] Optionally, a feeding window is provided on the cover plate.

[0017] Optionally, a switching valve is provided on the pipeline between the spray head and the mixing tank.

[0018] Optionally, a spraying method includes the above automatic spraying device, and is characterized in that it includes the following steps:

[0019] Preparation stage, replenishing water to the mixing tank and adding calcium chloride powder for stirring

[0020] Feeding stage, when the conveying platform starts to convey ore normally, the sintered ore and the miscellaneous ore are successively placed on the belt for conveying according to the material types set by the user;

[0021] Spraying stage, the calcium chloride solution spray head is arranged in the middle of the belt, at the position of the first outlet of the bunker. According to the belt speed and the distance from each bunker discharge port to the spraying position, calculate the time to open the calcium chloride solution spray, and determine the opening and closing times of the spray valve;

[0022] Water replenishing stage, a low water level limit and a high water level limit are preset in the mixing tank. The water level gauge outputs water level data to the PLC control system through the control cable for the real-time water level, and accesses the low water level limit and the high water level limit through the control system to realize the functions of automatic water replenishment and water replenishment limit.

[0023] As described above, an automatic spraying device of the present invention has the following beneficial effects: the nozzle assembly is connected to at least two mixing tanks through pipelines, and a valve is provided between each mixing tank and the nozzle assembly to control the on / off of the pipeline. Such a design enables the spraying process to be switched and has sustainability. At the same time, this design can adapt to different types of ores and different spraying requirements. By adjusting the opening and closing of the valves, as well as the concentration and composition of the solution in the mixing tank, customized spraying of different ores can be achieved to meet the diverse needs in the blast furnace smelting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It shows a schematic structural diagram in an embodiment of the present invention.

[0025] DESCRIPTION OF PART NUMERALS

[0026] 1 conveying platform

[0027] 2 nozzle assembly

[0028] 3 mixing tank

[0029] 4 water level gauge

[0030] 5 intake pipe

[0031] 6 check valve

[0032] 7 cover plate

[0033] 8 switching valve DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0035] Please refer to Figure 1It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. The illustrations only show the components related to the present invention, rather than being drawn according to the number, shape, and size of the components in actual implementation. The types, quantities, and proportions of the components during implementation can be arbitrarily changed, and the component layout type may also be more complex. The structures, proportions, sizes, etc. shown in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope in which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present invention can be implemented.

[0036] Please refer to Figure 1 as shown, the present invention provides an automatic sprinkler device, including:

[0037] A conveying platform 1;

[0038] A sprinkling mechanism, the sprinkling mechanism is arranged above the conveying platform 1 through a bracket. The sprinkling mechanism includes a nozzle assembly 2 and at least two mixing tanks 3. The nozzle assembly 2 is connected to all the mixing tanks 3 through pipelines. A valve is provided between the nozzle assembly 2 and each mixing tank 3, and the valve is used to control the on-off of the pipeline;

[0039] The nozzle assembly 2 faces the conveying platform 1.

[0040] It should also be noted that the nozzle assembly is connected to at least two mixing tanks through pipelines, and a valve is provided between each mixing tank and the nozzle assembly to control the on-off of the pipeline. Such a design enables the sprinkling process to be switched. When the solution in one of the mixing tanks 3 is insufficient, the valve 8 can be switched to use another mixing tank 3, which has sustainability. At the same time, this design can adapt to different types of ores and different sprinkling requirements. By adjusting the opening and closing of the valves, as well as the concentration and composition of the solution in the mixing tanks, customized sprinkling of different ores can be achieved to meet the diverse requirements during blast furnace smelting.

[0041] Exemplarily, a water level gauge 4 is further provided on the outer wall of the mixing tank 3, and the water level gauge 4 is used to observe the water level condition in the mixing tank 3.

[0042] It should also be noted that the main function of the water level gauge 4 is to monitor and display the water level in the mixing tank in real time. Through the water level gauge 4, the operator can intuitively understand the liquid level height in the mixing tank, and thus make corresponding control decisions, such as opening or closing the inlet valve, adjusting the operating parameters of the mixing tank, etc. This is crucial for ensuring the normal operation of the mixing tank and the stability of the process.

[0043] Exemplarily, the water level gauge 4 is a magnetic flap water level gauge 4.

[0044] It should also be noted that the display panel of the magnetic flap water level gauge 4 usually uses a striking color contrast. The main function of the magnetic flap water level gauge 4 is to continuously and intuitively display the water level changes in the mixing tank. Its working principle is based on the buoyancy principle and magnetic coupling. When the water level rises or falls, the float also moves up and down, and then drives the external flap to flip through magnetic coupling, representing different water level heights with different colors or marks.

[0045] Exemplarily, a stirrer is provided in the mixing tank 3.

[0046] It should also be noted that the main function of the stirrer is to promote the uniform mixing of the materials in the mixing tank. Through stirring, it can ensure that substances with different components or phases reach an ideal mixing state in a short time.

[0047] Exemplarily, the stirrer includes a plurality of inlet pipes 5. All the inlet pipes 5 are arranged at the bottom of the mixing tank 3. One end of the inlet pipe 5 extends into the mixing tank 3, and the other end of the inlet pipe 5 is connected to a high-pressure gas source.

[0048] It should also be noted that by injecting gas into the inlet pipe 5 through the high-pressure gas source, these gases pass through the liquid layer in the form of bubbles, thereby generating a stirring effect in the mixing tank. This way of gas flow stirring can assist or replace traditional mechanical stirring to achieve the purposes of mixing, dissolving, and dispersing of materials. During the gas bubbling process, the contact area between the bubbles and the liquid increases, which is beneficial for the solute in the liquid to diffuse into the bubbles or the gas in the bubbles to dissolve into the liquid, thus enhancing the mass transfer process.

[0049] Exemplarily, a check valve 6 is provided on the pipeline between the inlet pipe 5 and the high-pressure gas source.

[0050] It should also be noted that the main function of the check valve 6 is to ensure that the gas can only flow unidirectionally, that is, only from the high-pressure gas source to the inside of the mixing tank, and cannot flow back to the high-pressure gas source or other system parts. This can effectively prevent the gas or liquid in the mixing tank from flowing back into the gas source pipeline when the gas supply is interrupted or the pressure in the mixing tank suddenly rises, causing pollution, damage, or safety hazards.

[0051] Exemplarily, a cover plate 7 is further provided above the mixing tank 3, and a water inlet window is provided on the cover plate 7.

[0052] It should also be noted that the cover plate 7 can effectively shield the upper part of the mixing tank, preventing external pollutants such as dust and debris from entering the mixing tank and maintaining the cleanliness inside the mixing tank. At the same time, the cover plate 7 can also reduce water evaporation and maintain the stability of the water level and solution concentration inside the mixing tank.

[0053] Exemplarily, a switching valve 8 is provided on the pipeline between the spray head 3 and the mixing tank 2.

[0054] It should also be noted that the switching valve 8 can control the on-off and flow direction of the water flow in the pipeline. By operating the valve, the water flow connection between the spray head and the mixing tank can be flexibly opened or closed to achieve precise control of the water flow, and at the same time, switching between two mixing tanks 2 can be realized.

[0055] Exemplarily, a feeding window is provided on the cover plate 7.

[0056] It should also be noted that the feeding window provides a direct and convenient channel for operators, enabling them to put required materials such as calcium chloride powder and additives into the mixing tank. This design avoids the need to open the entire cover plate 7 or perform complex operations, thus simplifying the feeding process.

[0057] This application also proposes an automatic spraying method, including the above automatic spraying device, which includes the following steps:

[0058] S1: Prepare the solution, set multiple water level marks in the mixing tank 3, and inject a calcium chloride mixed solution into the mixing tank 3; replenish water in the mixing tank and add calcium chloride powder and stir.

[0059] S2: Feeding stage, when the conveying platform 1 starts to convey ore normally, the sintered ore and miscellaneous ore are continuously placed on the belt for conveying according to the material types set by the user.

[0060] continue to be placed on the belt for conveying;

[0061] S3: Spraying stage, the calcium chloride solution spray head is set in the middle of the belt, at the position of the first outlet of the bunker. According to the belt speed and the distance from each bunker discharge port to the spraying position, calculate the time to open the calcium chloride solution spraying, and determine the opening and closing time of the spray valve.

[0062] of the spray valve;

[0063] S4: Water replenishment stage. A low water level limit and a high water level limit are preset in the mixing tank 3. The water level gauge 4 outputs the real-time water level data to the PLC control system through the control cable, and the low water level limit and the high water level limit are accessed through the control system. The low water level limit includes a low water level and an ultra-low water level, and the high water level limit includes a high limit and an ultra-high limit, which are used to realize the functions of automatic water replenishment and water replenishment limit. Water replenishment starts when the solution reaches the low water level and stops when the solution reaches the high water level;

[0064] Among them, the low water level is the lowest water level under normal circumstances that does not affect the operation of the equipment, the ultra-low water level is the water level that affects the operation of the equipment, the high limit is the highest water level that does not affect the operation of the equipment, and the ultra-high limit is the water level that affects the operation of the equipment. In the case of affecting the operation of the equipment, an alarm will be issued.

[0065] At the same time, a calcium chloride powder box is arranged on the upper part of the mixing tank 3. When the calcium chloride solution in the mixing tank 3 reaches the low water level and triggers automatic water replenishment, the PLC control system automatically adds a certain amount of calcium chloride powder from the calcium chloride powder box into the mixing tank 3, and at the same time starts the stirrer for stirring.

[0066] The PLC programmable logic controller controls the alarm system, which is a key system in industrial automation for real-time monitoring of equipment status, detecting potential faults and issuing alarms in a timely manner. The system includes a central processing unit, input / output modules, a power supply module and expansion components.

[0067] In summary, for an automatic spraying device using the present invention, the nozzle assembly is connected to at least two mixing tanks through pipelines, and a valve is provided between each mixing tank and the nozzle assembly to control the on / off of the pipeline. Such a design enables the spraying process to be switched and is sustainable. At the same time, this design can adapt to different types of ores and different spraying requirements. By adjusting the opening and closing of the valves, as well as the concentration and composition of the solution in the mixing tank, customized spraying of different ores can be achieved to meet the diverse needs in the blast furnace smelting process.

[0068] The above embodiments are only used to exemplarily illustrate the principles and effects of the present invention, rather than to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An automatic spraying device, characterized in that: include: Conveying platform; A spray mechanism, the spray mechanism being arranged above the conveying platform via a bracket, the spray mechanism comprising a spray head assembly and at least two mixing tanks, the spray head assembly being connected to all the mixing tanks via pipes, a valve being provided between the spray head assembly and each of the mixing tanks, the valve being used to control the on / off of the pipes; The nozzle assembly faces the conveying platform.

2. The automatic spraying device according to claim 1, characterized in that: A water level gauge is also provided on the outer wall of the mixing tank, and the water level gauge is used to observe the water level in the mixing tank.

3. The automatic spraying device according to claim 2, characterized in that: The water level gauge is a magnetic flap water level gauge.

4. The automatic spraying device according to claim 3, characterized in that: A stirrer is provided in the mixing tank.

5. The automatic spraying device according to claim 4, characterized in that: The agitator includes a plurality of air inlet pipes, all of which are arranged at the bottom of the mixing tank, one end of the air inlet pipe extends into the mixing tank, and the other end of the air inlet pipe is connected to a high-pressure air source.

6. The automatic spraying device according to claim 5, characterized in that: A check valve is provided on the pipeline between the air inlet pipe and the high-pressure air source.

7. The automatic spraying device according to claim 6, characterized in that: A cover plate is further provided above the mixing tank, and a water inlet window is provided on the cover plate.

8. The automatic spraying device according to claim 7, characterized in that: The cover plate is provided with a feeding window.

9. The automatic spraying device according to claim 8, characterized in that: A switching valve is provided on the pipeline between the nozzle and the mixing tank.

10. A spraying method, comprising the automatic spraying device according to any one of claims 1 to 9, characterized in that: The following steps are involved: In the preparation stage, water is added to the mixing tank and calcium chloride powder is added and stirred. During the loading stage, when the conveying platform begins to transport ore normally, sintered ore and miscellaneous ore are placed on the belt for transportation according to the material types set by the user; During the spraying stage, the calcium chloride solution nozzle is set in the middle of the belt, at the first outlet of the silo. The time to start the calcium chloride solution spraying is calculated according to the belt speed and the distance from each silo discharge port to the spraying position, and the opening and closing time of the spray valve is determined; During the water replenishment stage, a low water limit and a high water limit are preset in the mixing tank, and the water level meter outputs the real-time water level data to the PLC control system through the control cable, and the low water limit and the high water limit are connected through the control system to realize automatic water replenishment and water replenishment limit functions.

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