Energy-saving ladle roaster with built-in flow guide structure

Abstract

The utility model relates to a steel ladle roasting technical field especially is related to an energy -conserving steel ladle roaster of built -in flow guide structure, including flow guide concentrated shower nozzle, steel ladle cover, total gas pipe and fixed support landing gear, flow guide concentrated shower nozzle is installed on the steel ladle cover and penetrates, and total gas pipe is connected and is arranged at flow guide concentrated shower nozzle top, and the steel ladle cover is set up on the fixed support landing gear, the utility model discloses can carry out the guidance type ejection to the combustion gas of the convection mixed oxygen or air through flow guide concentrated shower nozzle, can concentrate and prolong simultaneously to the flame produced by the combustion gas of the mixed oxygen or air of ignition, produces the roasting heat source of longer distance, avoids the spout volume to be too big simultaneously, can carry out better roasting to the steel ladle bottom area, and is applicable to a variety of steel ladle, and the scope of application is wide, and practicality is high.

Description

Technical Field

[0001] This utility model relates to ladle baking equipment, and more particularly to an energy-saving ladle baking equipment with a built-in flow guiding structure, belonging to the field of ladle baking technology. Background Technology

[0002] A ladle baker is a piece of equipment used in steel production and processing. It is mainly used to bake the ladle after it has been newly built and before it is filled with molten steel to ensure that the ladle reaches the appropriate working conditions. Energy-saving ladle bakers are important equipment in the steel industry for achieving energy conservation and emission reduction, improving production efficiency and economic benefits. Their technology is constantly innovating and developing, providing strong support for the sustainable development of the steel industry.

[0003] The flames emitted from the nozzles of existing energy-saving ladle bakers are rather flickering and scattered, failing to form a concentrated baking flame over a long distance and thus unable to generate a baking heat source over a long distance. Although the plunger-type structure can improve the above shortcomings to some extent, the plunger-type structure makes the nozzle volume too large, making it unsuitable for various types of ladles and difficult to bake the bottom area of ​​the ladle effectively, resulting in poor performance and low practicality. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an energy-saving ladle baking device with a built-in flow guiding structure that can concentrate and guide the ejected flames.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] An energy-saving ladle baking oven with a built-in flow guiding structure, comprising:

[0007] A steel ladle lid serves as the base of the baking oven;

[0008] A flow-directing and concentrating nozzle is installed through the steel ladle cover. The flow-directing and concentrating nozzle is used to better guide the exhaust of the combustion gas mixed with oxygen or air and can effectively confine the flame generated by igniting the combustion gas mixed with oxygen or air.

[0009] A main gas supply pipe is connected to the top of the flow-concentrating nozzle, and the main gas supply pipe is used to deliver oxygen or air mixed with combustion gas to the flow-concentrating nozzle.

[0010] A fixed support landing gear is provided, and the ladle cover is disposed on the fixed support landing gear. The fixed support landing gear is used to rotate and support the ladle cover.

[0011] Furthermore, the flow-guiding and concentrating nozzle includes a retaining base, a gas-gathering pipe disposed in the retaining base, a Laval nozzle connected to the opening at the end of the gas-gathering pipe, and a gas delivery and guiding assembly disposed on the inner wall of the top of the gas-gathering pipe.

[0012] Furthermore, the gas delivery guide assembly includes an inverted conical guide block and a plurality of flow mixing holes that are vertically opened on the inverted conical guide block. The plurality of flow mixing holes penetrate the inner wall of the top end of the gas gathering pipe. The plurality of flow mixing holes are evenly and equidistantly distributed from the center of the inverted conical guide block outwards, and the diameter of the holes gradually decreases.

[0013] Furthermore, the main gas supply pipe includes a combustion-supporting gas supply pipe, an access branch pipe connected to the bend of the combustion-supporting gas supply pipe, and a combustion gas supply pipe installed at the top opening of the access branch pipe.

[0014] Furthermore, the locking and fixing seat is locked at the center of the steel ladle cover, the combustion-supporting gas delivery pipe is connected to the top of the gas gathering pipe, and the combustion gas delivery pipe is bolted to the top opening of the access branch pipe.

[0015] Furthermore, the fixed support landing gear includes a support mounting frame, a right-angle flip support connecting frame rotatably mounted on the support mounting frame, and a swing drive assembly rotatably mounted on the support mounting frame and the right-angle flip support connecting frame. The steel ladle cover is fixedly disposed on the transverse right-angle frame of the right-angle flip support connecting frame.

[0016] Furthermore, the swing drive assembly includes a rotating support base, a telescopic rod disposed on the rotating support base, and a rotating support top seat disposed at the telescopic end of the telescopic rod.

[0017] Furthermore, the rotating support base is rotatably mounted on the crossbar of the support mounting frame, and the rotating support top seat is rotatably mounted on the horizontal right-angle frame crossbar of the right-angle flip support connecting frame.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This application can guide the combustion gas of oxygen or air mixture to be sprayed out through a convection nozzle, while concentrating and extending the flame generated by the combustion gas of oxygen or air mixture to generate a longer-distance baking heat source. At the same time, it avoids the nozzle volume being too large, which can better bake the bottom area of ​​the ladle. It is applicable to various ladles, has a wide range of applications, and is highly practical. Attached Figure Description

[0020] Figure 1This is a half-section internal structure diagram of the flow-guiding and concentrating nozzle of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the flow-guiding and concentrating nozzle of this utility model.

[0022] Figure 3 This is a schematic diagram of the fixed support landing gear structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall appearance structure of this utility model.

[0024] In the diagram, 1. Centralized flow nozzle; 2. Steel ladle cover; 3. Main gas supply pipe; 4. Fixed support landing gear; 5. Clip-on fixing seat; 6. Gas gathering pipe; 7. Laval nozzle; 8. Gas delivery and flow guiding assembly; 9. Inverted conical guide block; 10. Flow guiding mixing hole; 11. Combustion-supporting gas delivery pipe; 12. Connecting branch pipe; 13. Combustion gas delivery pipe; 14. Support mounting bracket; 15. Right-angle flip support connecting bracket; 16. Swing drive assembly; 17. Rotating support base; 18. Telescopic rod; 19. Rotating support top seat. Detailed Implementation

[0025] The technical solution of this utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-4 As shown in the figure, this embodiment provides an energy-saving ladle baking oven with a built-in flow guiding structure, which includes:

[0027] Steel ladle cover 2 serves as the base of the baking oven;

[0028] A flow-guiding and concentrating nozzle 1 is installed through the steel ladle cover 2. The flow-guiding and concentrating nozzle 1 is used to guide the combustion gas out and confine the flame generated by the combustion gas in the combustion state.

[0029] The main gas supply pipe 3 is connected to the top of the flow-directing and concentrating nozzle 1, and is used to transport the mixed combustion gas to the flow-directing and concentrating nozzle 1.

[0030] Fixed support landing gear 4, the ladle cover 2 is disposed on the fixed support landing gear 4, and the fixed support landing gear 4 is used to rotate and support the ladle cover 2;

[0031] The ladle cover 2 is used to fix and support the flow-directing concentrated nozzle 1. At the same time, the ladle cover 2 is used to cover the opening at the top of the ladle to prevent a large amount of heat from flowing out during baking.

[0032] The flow-guiding and concentrating nozzle 1 is used to guide the ejection of combustion gases that are mixed with oxygen or air. At the same time, it can concentrate and extend the flame generated by the combustion gases that are mixed with oxygen or air, creating a baking heat source with a longer distance. It also avoids the nozzle volume being too large, allowing for better baking of the bottom area of ​​the ladle. It is suitable for various ladles and can better meet people's needs.

[0033] Furthermore, such as Figure 1 and Figure 2 As shown, the flow-guiding and concentrating nozzle 1 includes a retaining base 5, a gas-gathering pipe 6 disposed in the retaining base 5, a Laval nozzle 7 connected to the opening at the end of the gas-gathering pipe 6, and a gas delivery and guiding assembly 8 disposed on the inner wall of the top of the gas-gathering pipe 6. The retaining base 5 is used to fix and support the gas-gathering pipe 6. The gas-gathering pipe 6 is used to guide the mixed oxygen or air combustion gas ejected from the main gas supply pipe 3 into the Laval nozzle 7. At the same time, the gas-gathering pipe 6 can fix and support the gas delivery and guiding assembly 8. The gas delivery and guiding assembly 8 can better guide the mixed oxygen or air combustion gas ejected from the main gas supply pipe 3, and also facilitate better mixing of oxygen or air with the combustion gas. The Laval nozzle 7 allows the combustion gas flowing through the mixed oxygen or air to be ejected more quickly, improving the stability of the ejected flame, avoiding the flame tip jumping and dispersing, and making the flame generated by the mixed oxygen or air combustion gas after ignition quickly and concentratedly ejected, achieving the effect of concentrated and appropriately elongated flame, generating a baking heat source with a longer distance, and better baking the bottom area of ​​the ladle.

[0034] Furthermore, such as Figure 1As shown, the gas delivery and guiding assembly 8 includes an inverted conical guide block 9 and a plurality of guiding and mixing holes 10 that are vertically opened on the inverted conical guide block 9. The plurality of guiding and mixing holes 10 penetrate the inner wall of the top end of the gas gathering pipe 6. The plurality of guiding and mixing holes 10 are evenly and equidistantly distributed from the center of the inverted conical guide block 9 outwards, and the diameter of the holes gradually decreases, so that the vast majority of the mixed gas is ejected from the center position, and a small amount of mixed gas is ejected and follows the contour of the inverted conical guide block 9 from the outside towards the center. The inverted conical guide block 9 and the plurality of guiding and mixing holes 10 cooperate with each other to facilitate the guiding of the gas ejection path, and at the same time allow the gas to pass through the plurality of guiding and mixing holes 10. The oxygen or air combustion gases can be mixed better; the guide mixing hole 10 is smaller than the inner diameter of the branch pipe in the main gas supply pipe 3, so when an equivalent amount of oxygen or air and combustion gases rush in, only a portion of the gas will be discharged through several guide mixing holes 10, and some oxygen or air and combustion gases will detour, but new oxygen or air and combustion gases will continuously rush in and mix in, so the oxygen or air and combustion gases will mix better. At the same time, because the guide mixing hole 10 is smaller than the inner diameter of the branch pipe in the main gas supply pipe 3, the ejected gas speed will be faster and more powerful, and the flame produced by the subsequent mixing of oxygen or air combustion gases will be more concentrated.

[0035] Furthermore, such as Figure 1 As shown, the main gas pipeline 3 includes a combustion-supporting gas delivery pipe 11, an access branch pipe 12 connected to the bend of the combustion-supporting gas delivery pipe 11, and a combustion gas delivery pipe 13 installed at the opening at the top of the access branch pipe 12. The combustion-supporting gas delivery pipe 11 is used to connect the device to a compressed oxygen tank or an air blower to accelerate the complete combustion of the combustion gas, enhance combustion efficiency, homogenize the combustion temperature, and ensure the safety and stability of the device. The access branch pipe 12 is used to connect to and support the combustion gas delivery pipe 13. The combustion gas delivery pipe 13 is used to connect the device to a compressed fuel gas tank such as coal gas or natural gas to provide baking fuel for the baking operation of the steel ladle.

[0036] Furthermore, such as Figure 1 and Figure 2 As shown, the snap-fit ​​fixing seat 5 is snap-fitted at the center of the steel ladle cover 2, the combustion-supporting gas delivery pipe 11 is connected to the top of the gas gathering pipe 6, and the combustion gas delivery pipe 13 is installed at the top opening of the access branch pipe 12 by bolts.

[0037] Furthermore, such as Figure 3 and Figure 4As shown, the fixed support landing gear 4 includes a support mounting frame 14, a right-angle flip support connecting frame 15 rotatably mounted on the support mounting frame 14, and a swing drive assembly 16 rotatably mounted on the support mounting frame 14 and the right-angle flip support connecting frame 15. The ladle cover 2 is fixedly mounted on the horizontal right-angle frame of the right-angle flip support connecting frame 15. The support mounting frame 14 facilitates the fixed installation of the device in the required location. The right-angle flip support connecting frame 15 is used to provide fixed support for the ladle cover 2, and the swing drive assembly 16 is used to drive the right-angle flip support connecting frame 15 to flip to a certain extent on the support mounting frame 14 to control the lifting and swinging of the ladle cover 2 before and after operation.

[0038] Furthermore, such as Figure 3 As shown, the swing drive assembly 16 includes a rotating support base 17, a telescopic rod 18 disposed on the rotating support base 17, and a rotating support top seat 19 disposed at the telescopic end of the telescopic rod 18. The rotating support base 17 and the rotating support top seat 19 cooperate with each other so that the telescopic rod 18 can be rotatably sleeved between the support mounting frame 14 and the right-angle flip support connecting frame 15. The telescopic rod 18 realizes the lifting and swinging of the right-angle flip support connecting frame 15 on the support mounting frame 14 before and after operation through its own telescopic property.

[0039] Furthermore, such as Figure 3 As shown, the rotating support base 17 is nested on the crossbar of the support mounting frame 14, and the rotating support top seat 19 is nested on the horizontal right-angle frame crossbar of the right-angle flip support connecting frame 15.

[0040] like Figures 1-4 As shown, the principle of the energy-saving ladle baking device with built-in flow guiding structure provided in this embodiment is as follows: When using the device, first fix the support mounting frame 14 firmly in the work site, connect the external compressed oxygen tank chamber or the air blower outlet pipe to the combustion gas delivery pipe 11, connect the compressed fuel gas tank gas delivery pipe to the combustion gas delivery pipe 13, and then move the ladle to be baked to the bottom of the ladle cover 2.

[0041] The worker places the ignition source at a suitable safe distance below the Laval nozzle 7, and opens the valve switch on the gas supply pipe of the compressed fuel gas tank and the valve switch on the gas outlet pipe of the compressed oxygen tank chamber or the air blower. In a specific embodiment, an automatic ignition component can also be installed on the device; the valve switches are adjusted until the flame is stable.

[0042] After debugging, the ignition is completed, the telescopic rod 18 extends, the ladle cover 2 covers the opening at the top of the ladle, and the flames sprayed from the guide nozzle 1 bake the ladle.

[0043] During this process, when the valves on the gas supply pipe of the compressed fuel gas tank and the valves on the gas outlet pipe of the compressed oxygen tank chamber or the air blower are opened, the combustion-supporting gas will quickly enter the combustion-supporting gas supply pipe 11, and the combustion gas will quickly enter the combustion gas supply pipe 13. The two gases will be ejected simultaneously through several guiding mixing holes 10 on the inverted conical guide block 9. However, since the guiding mixing holes 10 are smaller than the inner diameter of the branch pipes in the main gas supply pipe 3, when the combustion-supporting gas and the combustion gas rush in, only a portion of the combustion-supporting gas and the combustion gas will be instantly discharged through several guiding mixing holes 10. Some of the combustion-supporting gas and the combustion gas will detour, but new combustion-supporting gas and the combustion gas will continue to rush in and mix in. Therefore, the combustion-supporting gas and the combustion gas will mix better. Also, because the guiding mixing holes 10 are smaller than the inner diameter of the branch pipes in the main gas supply pipe 3, the ejected mixed gas will be faster and more powerful.

[0044] When the mixed gas is ejected rapidly and forcefully, it may disperse due to the instantaneous ejection. However, the dispersed mixed gas has already entered the Laval nozzle 7. The Laval nozzle 7 will cause the mixed gas flowing through it to be ejected even faster, so that the flame generated by the mixed gas after ignition will also be ejected quickly and concentrated. Therefore, the ejected flame is more stable and will not have the flame tip jumping and dispersing. It can achieve the effect of concentrated flame and appropriate elongation, generating a longer and more stable baking heat source for better baking of the bottom area of ​​the ladle.

[0045] The foregoing description illustrates and describes preferred embodiments of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein. Any modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. An energy-saving ladle baking oven with a built-in flow guiding structure, characterized in that, include: A steel ladle cover (2) serves as the base of the baking oven; A flow-guiding and concentrating nozzle (1) is installed through the steel ladle cover (2). The flow-guiding and concentrating nozzle (1) is used to guide the combustion gas out and constrain the flame generated by the combustion gas in the combustion state. The main gas supply pipe (3) is connected to the top of the flow-concentrating nozzle (1) and is used to transport the mixed combustion gas to the flow-concentrating nozzle (1). Fixed support landing gear (4), the steel ladle cover (2) is mounted on the fixed support landing gear (4), and the fixed support landing gear (4) is used to rotate and support the steel ladle cover (2).

2. The energy-saving ladle baking oven with built-in flow guiding structure according to claim 1, characterized in that: The flow-guiding and concentrating nozzle (1) includes a snap-fit ​​fixing seat (5), a gas-gathering pipe (6) disposed in the snap-fit ​​fixing seat (5), a Laval nozzle (7) connected to the opening at the end of the gas-gathering pipe (6), and a gas delivery and flow-guiding assembly (8) disposed on the inner wall of the top end of the gas-gathering pipe (6).

3. The energy-saving ladle baking oven with a built-in flow guiding structure according to claim 2, characterized in that: The gas delivery guide assembly (8) includes an inverted conical guide block (9) and a plurality of flow mixing holes (10) that are perpendicularly opened on the inverted conical guide block (9). The plurality of flow mixing holes (10) penetrate the inner wall of the top end of the gas gathering pipe (6). The plurality of flow mixing holes (10) are evenly and equidistantly distributed from the center of the inverted conical guide block (9) outward and the diameter of the holes gradually decreases.

4. The energy-saving ladle baking oven with a built-in flow guiding structure according to claim 3, characterized in that: The main gas pipeline (3) includes a combustion gas delivery pipeline (11), an access branch pipeline (12) connected to the bend of the combustion gas delivery pipeline (11), and a combustion gas delivery pipeline (13) installed at the top opening of the access branch pipeline (12).

5. The energy-saving ladle baking oven with a built-in flow guiding structure according to claim 4, characterized in that: The snap-fit ​​fixing seat (5) is snap-fitted at the center of the steel ladle cover (2), the combustion-supporting gas delivery pipe (11) is connected to the top of the gas gathering pipe (6), and the combustion gas delivery pipe (13) is installed at the top opening of the access branch pipe (12).

6. The energy-saving ladle baking oven with a built-in flow guiding structure according to claim 1, characterized in that: The fixed support landing gear (4) includes a support mounting frame (14), a right-angle flip support connecting frame (15) rotatably mounted on the support mounting frame (14), and a swing drive assembly (16) rotatably mounted on the support mounting frame (14) and the right-angle flip support connecting frame (15). The steel cover (2) is fixedly installed on the horizontal right-angle frame of the right-angle flip support connecting frame (15).

7. The energy-saving ladle baking oven with a built-in flow guiding structure according to claim 6, characterized in that: The swing drive assembly (16) includes a rotating support base (17), a telescopic rod (18) disposed on the rotating support base (17), and a rotating support top seat (19) disposed at the telescopic end of the telescopic rod (18).

8. The energy-saving ladle baking oven with a built-in flow guiding structure according to claim 7, characterized in that: The rotating support base (17) is rotatably mounted on the crossbar of the support mounting frame (14), and the rotating support top seat (19) is rotatably mounted on the horizontal right-angle frame crossbar of the right-angle flip support connecting frame (15).

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