A new converter bottom blowing air inlet assembly

Abstract

The utility model discloses a novel converter bottom blowing air inlet subassembly relates to steelmaking technical technical field, including air inlet storehouse, the air inlet storehouse is fixedly installed with filter screen, air inlet storehouse one side fixed mounting has the air outlet storehouse, the air outlet storehouse top is equipped with water pump, the air outlet storehouse top fixed mounting has with its intercommunication high pressure water pipe, water pump fixed mounting is at the top of high pressure water pipe. In the utility model, through high pressure water pipe spouts high pressure water flow, flushes air inlet storehouse, filter screen, air outlet storehouse, moves through electric telescopic column and drives air inlet board, exposes the gap, carries out the drainage, ejects flame again through the gas storehouse's flame spout, removes the water vapor of bottom blowing air inlet subassembly to make it become dry, avoids staff to flush, improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking technology, specifically to a novel converter bottom blowing air inlet assembly. Background Technology

[0002] Bottom-blown converter technology refers to the process of blowing gas from the bottom of the furnace into the molten pool during steelmaking to agitate the molten pool and supply oxygen, thereby promoting the steelmaking reaction. Various types of bottom-blown gases are used, including N2, Ar, O2, and CO2, and the choice of these gases depends on the specific steelmaking process and requirements. The bottom-blowing gas supply element is the core technology of the bottom-blowing process, and its type and performance directly affect the bottom-blowing effect. Common bottom-blowing gas supply elements are divided into two main categories: nozzle type and brick type. Nozzle type includes single-pipe type, sleeve type, and annular slot type; brick type includes dispersion type, slotted composite brick, and straight-hole type. Modern bottom-blown converter technology has been widely used in steel companies worldwide, becoming a crucial link in the steelmaking process. With the continuous advancement of steelmaking technology and increasingly stringent environmental protection requirements, bottom-blown converter technology is also constantly being innovated and improved. For example, new bottom-blowing gas supply elements are being adopted, bottom-blowing process parameters are being optimized, and the stability and reliability of the bottom-blowing system are being improved. At the same time, bottom-blown converter technology is also combined with other steelmaking technologies, such as slag splashing furnace protection technology and sliding plate slag blocking technology, to jointly promote the development and progress of steelmaking technology.

[0003] The gas used in bottom blowing may contain impurities such as solid particles and dust. These impurities may clog nozzles or pipes after entering the bottom blowing system, affecting the normal flow and distribution of the gas. Impurities and pollutants in the gas may react chemically with molten metal at high temperatures, generating harmful byproducts. These byproducts not only affect the quality of molten steel but may also damage smelting equipment and the environment. In order to filter the gas used in bottom blowing, a bottom blowing inlet assembly is installed at the bottom of the converter. However, the filter device of a typical converter bottom blowing inlet assembly cannot be cleaned directly and needs to be manually disassembled and then cleaned, which is very inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a novel converter bottom blowing air inlet assembly to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a novel bottom-blowing air intake assembly for a converter, including an air intake chamber, a filter screen fixedly installed inside the air intake chamber, an air outlet chamber fixedly installed on one side of the air intake chamber, a water pump provided on the top of the air outlet chamber, and a high-pressure water pipe connected to the air outlet chamber fixedly installed on the top of the air outlet chamber, with the water pump fixedly installed on the top of the high-pressure water pipe.

[0006] Furthermore, a convex strip-shaped hole is provided on one side of the air intake chamber, and an air intake plate is provided on one side of the air intake chamber. The air intake plate is slidably connected to the strip-shaped hole. A connecting plate is fixedly installed on the top of the air intake chamber, and an electric telescopic column is fixedly installed on the bottom of the connecting plate. The telescopic end of the electric telescopic column is fixedly installed on the top of the air intake plate.

[0007] Furthermore, gas chambers are fixedly installed on both sides of the air intake chamber. A gas hole is opened on the side of the air intake chamber closest to the gas chamber. A flame nozzle is opened on the gas hole. The flame nozzle is fixedly installed on the output end of the gas chamber and connected to it. An air intake pipe connected to the input end of the gas chamber is fixedly installed.

[0008] Furthermore, a baffle is provided on the output end of the flame nozzle.

[0009] Furthermore, the baffle is provided with limiting holes, there are two limiting holes, and the top of the air intake chamber is fixedly installed with a limiting groove, which is composed of a front limiting groove and a rear limiting groove. The baffle is slidably connected to the front limiting groove. The top of the air intake chamber is provided with a snap-fit ​​plate, which is slidably connected to the rear limiting groove. The limiting holes are the same size as the snap-fit ​​plate.

[0010] Furthermore, a handle is fixedly installed on one side of the snap-fit ​​plate.

[0011] Furthermore, an air inlet is provided on one side of the air inlet chamber, and an air outlet is provided on one side of the air outlet chamber.

[0012] Furthermore, a control panel is fixedly installed on one side of the air intake chamber, and a temperature sensor is fixedly installed on the other side of the air intake chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are: high-pressure water is sprayed out through the high-pressure water pipe to wash the air inlet chamber, filter screen and air outlet chamber; the air inlet plate is moved by the electric telescopic column to expose the gap for drainage; and flames are sprayed out through the flame nozzle of the gas chamber to remove water vapor from the bottom blow air inlet component and make it dry, avoiding the need for workers to wash it and improving work efficiency. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of a novel converter bottom-blowing air inlet assembly.

[0015] Figure 2 This is a diagram illustrating the installation of the filter screen;

[0016] Figure 3 This is a schematic diagram of the installation of a high-pressure water pipe;

[0017] Figure 4 This is a schematic diagram of the intake panel installation.

[0018] Figure 5 This is a schematic diagram of the flame nozzle installation;

[0019] Figure 6 This is a schematic diagram of the baffle installation.

[0020] Figure 7 This is a schematic diagram of the intake pipe installation.

[0021] Figure 8 for Figure 7 Enlarged view of point A at location A;

[0022] Figure 9 This is a system operation flowchart for a novel converter bottom blowing air inlet assembly.

[0023] In the diagram: 1. Air intake chamber; 2. Filter screen; 3. Air outlet chamber; 4. Water pump; 5. High-pressure water pipe; 6. Air intake plate; 7. Connecting plate; 8. Electric telescopic column; 9. Gas chamber; 10. Flame nozzle; 11. Air intake pipe; 12. Baffle; 13. Limiting groove; 14. Snap-fit ​​plate; 15. Handle; 16. Air inlet; 17. Air outlet; 18. Control panel; 19. Temperature sensor; 20. Limiting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-9 This utility model provides a novel bottom-blowing air inlet assembly for converters:

[0026] See Figure 1 , Figure 2 , Figure 3 As shown, a novel converter bottom blowing air intake assembly includes an air intake chamber 1, a filter screen 2 fixedly installed inside the air intake chamber 1, an air outlet chamber 3 fixedly installed on one side of the air intake chamber 1, a water pump 4 provided on the top of the air outlet chamber 3, a high-pressure water pipe 5 connected to the top of the air outlet chamber 3, and the water pump 4 fixedly installed on the top of the high-pressure water pipe 5.

[0027] Filtering through filter screen 2 can effectively remove these impurities, prevent clogging, reduce the formation of harmful byproducts, and improve the purity and quality of molten steel.

[0028] The high-pressure water pipe 5 is directly facing the filter screen 2. Water can be supplied to the high-pressure water pipe 5 by the water pump 4. After the water is supplied by the high-pressure water pipe 5, the water pump 4 will spray high-pressure water to wash the filter screen 2. At the same time, it will also wash the entire air inlet chamber 1 and air outlet chamber 3. It can wash away impurities and other substances on the air inlet chamber 1, filter screen 2, and air outlet chamber 3, so as to avoid the filter screen 2 being blocked and affecting the filtration efficiency, or the air inlet chamber 1 and air outlet chamber 3 being blocked and affecting the normal operation of the device.

[0029] See Figure 1 , Figure 4 The air intake chamber 1 has a convex strip hole on one side, and an air intake plate 6 is provided on one side of the air intake chamber 1. The air intake plate 6 is slidably connected to the strip hole. A connecting plate 7 is fixedly installed on the top of the air intake chamber 1, and an electric telescopic column 8 is fixedly installed on the bottom of the connecting plate 7. The telescopic end of the electric telescopic column 8 is fixedly installed on the top of the air intake plate 6.

[0030] The air intake plate 6 is slidably connected to the strip hole on the air intake chamber 1. The air intake plate 6 can move up and down within the strip hole. The extension and retraction of the electric telescopic column 8 can control the up and down movement of the air intake plate 6. When the electric telescopic column 8 is extended to its longest state, the air intake plate 6 and the air intake chamber 1 are in a closed state. When the electric telescopic column 8 begins to retract, a gap will appear between the air intake plate 6 and the air intake chamber 1. This gap can be used for drainage.

[0031] See Figure 1 , Figure 3 , Figure 5 The air intake chamber 1 has a gas chamber 9 fixedly installed on both sides of its exterior. A gas hole is provided on the side of the air intake chamber 1 closest to the gas chamber 9. A flame nozzle 10 is provided on the gas hole. The flame nozzle 10 is fixedly installed at the output end of the gas chamber 9 and connected to it. An air intake pipe 11 is fixedly installed at the input end of the gas chamber 9 and connected to it.

[0032] The gas compartment 9 consists of a gas storage unit, a heating unit, a control system, safety devices, and a valve system.

[0033] Gas storage units are used to store gas, such as natural gas, liquefied petroleum gas or other combustible gases, and are usually composed of high-pressure gas cylinders and storage tanks.

[0034] Heating units are used to heat gas to the required temperature. These units include devices such as burners, heaters, or heat exchangers. These devices generate heat by burning fuels (such as natural gas or fuel oil) and transfer the heat to the gas.

[0035] The control system includes devices such as temperature sensors, pressure sensors, and flow controllers. These sensors and controllers can monitor the temperature, pressure, and flow of the gas in real time and adjust the output of the heating unit as needed.

[0036] Safety devices are used to ensure the safe operation of the gas chamber 9, and may include safety valves, overpressure protection devices, leak detectors, etc. These devices can take timely measures to prevent accidents when abnormal conditions occur in the gas chamber 9.

[0037] The valve system is used to deliver the gas from the storage unit to the heating unit, and then deliver the heated gas into the intake chamber 1.

[0038] The intake pipe 11 is used to supply combustion fuel to the gas chamber 9, and the nozzle 10 is used to spray flames to heat the gas in the intake chamber 1.

[0039] See Figure 6 A baffle 12 is provided on the output end of the flame nozzle 10.

[0040] The baffle 12 can block the burner nozzle 10, preventing water sprayed from the high-pressure water pipe 5 from entering the burner nozzle 10 during operation. If water enters the burner nozzle 10, the flame may not be able to evaporate the water in time, which will cause changes in the internal pressure of the gas stove, posing a risk of explosion due to thermal expansion and contraction. In addition, moisture may also cause incomplete combustion of gas, producing harmful gases.

[0041] See Figure 6 , Figure 7 , Figure 8 The baffle 12 is provided with limiting holes 20, and there are two limiting holes 20. The top of the air intake chamber 1 is fixedly installed with a limiting groove 13, which is composed of a front limiting groove 13 and a rear limiting groove 13. The baffle 12 is slidably connected to the front limiting groove 13. The top of the air intake chamber 1 is provided with a snap-fit ​​plate 14, which is slidably connected to the rear limiting groove 13. The limiting holes 20 and the snap-fit ​​plate 14 are the same size.

[0042] The limiting hole 20 can be inserted into the snap-fit ​​plate 14 for snap-fit ​​fixation.

[0043] When the upper limit hole 20 on the baffle 12 is locked by the locking plate 14, the flame nozzle 10 will be blocked by the baffle 12 to protect the flame nozzle 10. When the lower limit hole 20 is locked by the locking plate 14, the flame nozzle 10 will not be blocked and the flame nozzle 10 can operate normally.

[0044] A pull ring is fixedly installed on the baffle 12, which makes it easy for staff to move the baffle 12.

[0045] The limiting groove 13 can limit the movement range of the baffle 12 and the snap-fit ​​plate 14, so as to prevent the baffle 12 and the snap-fit ​​plate 14 from shifting and causing the snap-fit ​​plate 14 and the baffle 12 to fail to snap properly.

[0046] See Figure 8A handle 15 is fixedly installed on one side of the snap-fit ​​plate 14.

[0047] The handle 15 allows staff to easily move the card plate 14.

[0048] See Figure 3 , Figure 4 An air inlet 16 is provided on one side of the air inlet chamber 1, and an air outlet 17 is provided on one side of the air outlet chamber 3.

[0049] The air inlet 16 is connected to an external gas conveying device, allowing gas to enter the air inlet chamber 1 through the air inlet 16, and the air outlet 17 is connected to the bottom blowing assembly at the bottom of the converter.

[0050] See Figure 1 , Figure 9 A control panel 18 is fixedly installed on one side of the air intake chamber 1, and a temperature sensor 19 is fixedly installed on one side of the air intake chamber 1.

[0051] A buzzer is fixedly installed on one side of the temperature sensor 19.

[0052] The control panel 18 is connected to the water pump 4, the electric telescopic column 8, the gas chamber 9, and the temperature sensor 19. The temperature sensor 19 is also connected to the buzzer for easy operation. The temperature sensor 19 can detect the temperature inside the air intake chamber 1. When the temperature inside the air intake chamber 1 is lower than the normal level, it indicates that the gas temperature is lower than the normal level. At this time, the buzzer on the temperature sensor 19 will sound an alarm to remind the staff.

[0053] Working principle:

[0054] Step 1: The operator operates the electric telescopic column 8 and the gas chamber 9 via the control panel 18. The electric telescopic column 8 then moves the air intake plate 6 until it reaches its maximum length. At this point, the air intake plate 6 and the air intake chamber 1 are closed without any gaps to prevent gas from escaping. The operator then connects the external gas supply equipment to the air inlet 16 and begins to supply gas into the air intake chamber 1. The gas moves in the air intake chamber 1 due to the thrust generated by the external gas supply equipment. The gas passes through the filter screen 2, which filters the gas. The filtered gas enters the gas outlet chamber 3 and then enters the bottom blowing assembly of the converter from the gas outlet 17, facilitating bottom blowing of the converter.

[0055] Step 2: During the air intake process, if the temperature sensor 19 detects that the gas temperature is low, the temperature sensor 19 will send a signal to the buzzer to remind the staff to control the operation of the gas chamber 9 through the control panel 18, and spray high-pressure flames through the flame nozzle 10 to heat the gas.

[0056] Step 3: After the air intake process is completed, the operator can control the electric telescopic column 8 to retract via the control panel 18, creating a gap between the air intake plate 6 and the air intake chamber 1. Then, fasten the pull ring on the baffle 12 and push the baffle 12 downwards so that one of the upper limiting holes 20 aligns with the locking plate 14. Then, grasp the handle 15 and push the locking plate 14 so that one of the upper limiting holes 20 is locked by the locking plate 14. At this time, the flame nozzle 10 will be blocked by the baffle 12, protecting the flame nozzle 10. Then, connect the water pump 4 to the external water pipe and control the water pump 4 to run via the control panel 18. At this time, the high-pressure water pipe 5 starts spraying water to flush the air intake chamber 1, filter screen 2, and air outlet chamber 3. The wastewater formed after flushing flows through the gap between the air intake plate 6 and the air intake chamber 1. After the water flows out of the gaps and is rinsed, the staff controls the electric telescopic column 8 through the control panel 18 to move the air intake plate 6 until it extends to its maximum length. At this time, the air intake plate 6 and the air intake chamber 1 are closed without leaving any gaps. Then, the staff pulls the ring to move the baffle 12 upward so that the lower limit hole 20 is aligned with the snap-fit ​​plate 14. Then, the staff holds the handle 15 and pushes the snap-fit ​​plate 14 so that the lower limit hole 20 is snapped by the snap-fit ​​plate 14. At this time, the flame nozzle 10 will not be blocked by the baffle 12. The staff controls the gas chamber 9 through the control panel 18 to make the flame nozzle 10 spray high-temperature flames to heat up the entire bottom-blowing air intake assembly and evaporate the remaining water, which facilitates the operation of the bottom-blowing air intake assembly.

Claims

1. A novel converter bottom-blowing air inlet assembly, characterized in that: It includes an air intake chamber (1), a filter screen (2) is fixedly installed inside the air intake chamber (1), an air outlet chamber (3) is fixedly installed on one side of the air intake chamber (1), a water pump (4) is provided on the top of the air outlet chamber (3), a high-pressure water pipe (5) connected to the top of the air outlet chamber (3) is fixedly installed, and the water pump (4) is fixedly installed on the top of the high-pressure water pipe (5).

2. The novel converter bottom blowing air inlet assembly as described in claim 1, characterized in that: The air intake chamber (1) has a convex strip hole on one side, and an air intake plate (6) is provided on one side of the air intake chamber (1). The air intake plate (6) is slidably connected to the strip hole. A connecting plate (7) is fixedly installed on the top of the air intake chamber (1). An electric telescopic column (8) is fixedly installed at the bottom of the connecting plate (7). The telescopic end of the electric telescopic column (8) is fixedly installed on the top of the air intake plate (6).

3. The novel converter bottom blowing air inlet assembly as described in claim 1, characterized in that: Gas chambers (9) are fixedly installed on both sides of the air intake chamber (1). A gas hole is opened on the side of the air intake chamber (1) near the gas chamber (9). A flame nozzle (10) is opened on the gas hole. The flame nozzle (10) is fixedly installed at the output end of the gas chamber (9) and connected to it. An air intake pipe (11) is fixedly installed at the input end of the gas chamber (9) and connected to it.

4. A novel converter bottom-blowing air inlet assembly as described in claim 3, characterized in that: A baffle (12) is provided on the output end of the flame nozzle (10).

5. A novel converter bottom-blowing air inlet assembly as described in claim 4, characterized in that: The baffle (12) is provided with limiting holes (20), and there are two limiting holes (20). The top of the air intake chamber (1) is fixedly installed with a limiting groove (13), which is composed of a front limiting groove and a rear limiting groove. The baffle (12) is slidably connected to the front limiting groove. The top of the air intake chamber (1) is provided with a snap-fit ​​plate (14), which is slidably connected to the rear limiting groove. The limiting holes (20) and the snap-fit ​​plate (14) are the same size.

6. A novel converter bottom-blowing air inlet assembly as described in claim 5, characterized in that: A handle (15) is fixedly installed on one side of the snap-fit ​​plate (14).

7. A novel converter bottom-blowing air inlet assembly as described in claim 1, characterized in that: An air inlet (16) is provided on one side of the air inlet chamber (1), and an air outlet (17) is provided on one side of the air outlet chamber (3).

8. A novel converter bottom-blowing air inlet assembly as described in claim 1, characterized in that: A control panel (18) is fixedly installed on one side of the air intake chamber (1), and a temperature sensor (19) is fixedly installed on one side of the air intake chamber (1).

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