A mobile preheating oven

Abstract

The utility model relates to a movable preheating oven belongs to metallurgical continuous casting technical field. Including the trolley, be provided with the open-close type oven on the trolley, be equipped with the article cavity in the open-close type oven, the article cavity penetrates open-close type oven top surface, be equipped with the combustion unit on the trolley, the burner of combustion unit is worn and is equipped with open-close type oven, makes the burner set up in the article cavity, push the trolley, drive open-close type oven to move to the intermediate ladle bottom, open open-close type oven, make the water gap set up in the article cavity, then close open-close type oven, make the burner heat -proof water gap. The simple structure of the application reduces the floor area, push the trolley, drive open-close type oven to move to the intermediate ladle bottom, cylinder drive furnace door open, make the water gap set up in the article cavity, then cylinder furnace door closes, the burner carries out combustion in open-close type oven, heats -proof water gap that extends into the article cavity, improves heating efficiency, and strong adaptability.

Description

Technical Field

[0001] This utility model relates to a mobile preheating oven, belonging to the field of metallurgical continuous casting technology. Background Technology

[0002] In the continuous casting process, the nozzle at the bottom of the tundish needs to be preheated before use. The traditional method uses a suction-type heating device, which heats the nozzle by drawing in flue gas from the tundish. However, this method has the following problems:

[0003] 1. The equipment occupies a large area and has a complex system, involving hydraulic drive, flue gas ejection and collection devices, etc.

[0004] 2. It relies on tundish flue gas for heating, resulting in low thermal efficiency and slow heating rate;

[0005] 3. It cannot flexibly adapt to the preheating requirements of tundish nozzles in different locations.

[0006] Therefore, there is an urgent need for a preheating device that is simple in structure, highly efficient in heating, and easy to move. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to provide a mobile preheating oven in response to the above-mentioned prior art, so as to solve the problems of low heating efficiency, system complexity and poor adaptability of traditional water outlet preheating equipment.

[0008] The technical solution adopted by this utility model to solve the above problems is as follows: a mobile preheating oven includes a mobile trolley, on which an opening and closing oven is provided, and a storage cavity is provided inside the opening and closing oven, the storage cavity penetrating the top surface of the opening and closing oven; a combustion unit is provided on the mobile trolley, and the burner of the combustion unit passes through the opening and closing oven, so that the burner is located in the storage cavity; the mobile trolley is pushed to move the opening and closing oven to the bottom of the intermediate ladle, the opening and closing oven is opened, so that the water inlet is located in the storage cavity, and then the opening and closing oven is closed, so that the burner heats the water inlet.

[0009] The mobile trolley includes a frame, with a set of universal wheels and a set of brake wheels at the bottom of the frame. A handle is provided on the frame. Pushing the handle causes the set of universal wheels and the set of brake wheels to move, which in turn moves the frame and the opening and closing oven. After moving into position, the brake wheels apply the brakes.

[0010] The openable oven includes a furnace body with a partial opening on one side, extending downwards from the top of the furnace body. An oven door is located at the opening and is hinged to the furnace body. A cylinder seat is mounted on the frame, and a cylinder is located between the cylinder seat and the oven door. The cylinder body is hinged to the cylinder seat. A connecting block is located on the outer side of the oven door, and the connecting block is connected to the cylinder extension rod via a connecting rod. Arc-shaped grooves are respectively formed on the sides of the furnace body and the oven door. When the cylinder pushes the connecting rod, the oven door swings around the hinge, causing the oven door to close the opening of the furnace body, thus aligning the two arc-shaped grooves to form a storage cavity, or moving the oven door away from the furnace body, thereby opening the opening of the furnace body.

[0011] The furnace body opening is provided with an inner stop, and the side of the furnace door is provided with an outer stop, the inner stop and the outer stop cooperate with each other.

[0012] The inner wall of the furnace body and the inner wall of the furnace door are respectively provided with a high-temperature resistant layer.

[0013] The combustion unit includes a burner, which is connected to a fan via an air pipeline. The burner is also connected to a gas pipeline, which is equipped with a gas proportional valve.

[0014] Compared with the prior art, the advantages of this utility model are: a mobile preheating oven with a simple structure and reduced floor space. The moving trolley moves the opening and closing oven to the bottom of the intermediate ladle. The cylinder drives the furnace door to open, so that the water inlet is located in the storage cavity. Then the cylinder closes the furnace door, and the burner burns in the opening and closing oven to heat the water inlet that extends into the storage cavity, which improves heating efficiency and has strong adaptability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a mobile preheating oven according to an embodiment of the present invention;

[0016] Figure 2 This is a three-dimensional schematic diagram from another perspective of an embodiment of the present invention: a mobile preheating oven.

[0017] Figure 3 for Figure 1 Front view (cylinders, etc. omitted);

[0018] In the diagram: 1. Frame, 2. Handlebar, 3. Caster wheel assembly, 4. Brake wheel assembly, 5. Furnace body, 6. Furnace door, 7. Hinge, 8. Cylinder seat, 9. Cylinder, 10. Connecting rod, 11. Connecting block, 12. Inner stop, 13. Gas pipeline, 14. Outer stop, 15. Burner, 16. Fan. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 , 2 As shown in Figure 3, a mobile preheating oven in this embodiment includes a mobile trolley with a hinged oven fixed on it. The hinged oven has a storage cavity that extends through the top surface of the oven. A combustion unit is mounted on the mobile trolley, and the burner of the combustion unit is horizontally inserted through the hinged oven, positioned within the storage cavity. Pushing the mobile trolley moves the hinged oven to the bottom of the tundish, opening the oven so that the sprue is positioned within the storage cavity via the top of the oven. Then, the oven is closed, allowing the burner to heat the sprue.

[0021] The aforementioned openable oven includes a furnace body 5, with a partial opening on one side extending downwards from the top of the furnace body 5. An oven door 6 is located at the opening of the furnace body 5, and one side of the oven door 6 is hinged to the furnace body 5 via a hinge 7. A cylinder seat 8 is mounted on the frame 1, and a cylinder 9 is located between the cylinder seat 8 and the oven door 6. The cylinder body of the cylinder 9 is hinged to the cylinder seat 8. A connecting block 11 is located on the outer side of the oven door 6, and the connecting block 11 is connected to the extension rod of the cylinder 9 via a vertically arranged connecting rod 10. Arc-shaped grooves are respectively formed on opposite sides of the furnace body 5 and the oven door 6. When the cylinder pushes the connecting rod, the oven door swings around the hinge point. When the oven door closes the opening of the furnace body, the two arc-shaped grooves align to form a storage cavity, or the oven door moves away from the furnace body, opening the oven body.

[0022] The aforementioned mobile trolley includes a frame 1, with a set of universal wheels 3 and a set of brake wheels 4 at the bottom. A handle 2 is mounted on the frame 1. Pushing the handle 2 moves the universal wheels 3 and the set of brake wheels 4, thus moving the frame 1 and the furnace body 5. Once in position, the brake wheels 4 apply pressure to prevent the frame 1 from shifting. In the continuous casting process, the location and working conditions of the tundish are relatively complex. Using a combination of universal wheels and brake wheels facilitates moving the frame within a small range, and once in position, the brake wheels stabilize the frame.

[0023] The combustion unit includes a burner 15, whose mixing chamber is connected to a fan 16 via an air duct. The mixing chamber is also connected to a gas duct 13. A gas proportional valve is installed on the gas duct 13. When the fan, gas proportional valve, and ignition device are opened, the burner is ignited. The burner heats the water inlet. Once the water inlet has been heated to a predetermined temperature, the gas proportional valve is closed, and the fan is shut off after a delay.

[0024] The gas proportional valve is used to fix the air-fuel ratio of natural gas to air. When adjusting the burner power, only the air flow needs to be adjusted, and the natural gas flow will be adjusted automatically.

[0025] An outer stop 14 is provided at the furnace body opening, and an inner stop 12 is provided at the furnace door opening. The inner and outer stops work together to improve the sealing of the furnace body when the furnace door is closed.

[0026] The inner walls of the furnace body and the inner walls of the furnace door are respectively lined with high-temperature resistant castable or mullite prefabricated parts to improve service life.

[0027] This application features a simple structure that reduces the floor space required. A moving trolley is used to move the opening and closing oven to the bottom of the intermediate ladle. A cylinder drives the furnace door to open, allowing the water inlet to be placed inside the storage cavity. Then, the cylinder closes the furnace door, and the burner burns inside the opening and closing oven to heat the water inlet that extends into the storage cavity, thus improving heating efficiency and adaptability.

[0028] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A mobile preheating oven, characterized in that: The device includes a mobile trolley, on which a hinged oven is mounted. The hinged oven has a storage cavity that extends through the top surface of the oven. The mobile trolley also has a combustion unit with a burner that passes through the hinged oven and is positioned within the storage cavity. The mobile trolley is pushed to move the hinged oven to the bottom of the tundish, opening the oven to position the water inlet within the storage cavity. The oven is then closed, allowing the burner to heat the water inlet.

2. The mobile preheating oven according to claim 1, characterized in that: The mobile trolley includes a frame, with a set of universal wheels and a set of brake wheels at the bottom of the frame. A handle is provided on the frame. Pushing the handle causes the set of universal wheels and the set of brake wheels to move, which in turn moves the frame and the opening and closing oven. After moving into position, the brake wheels apply the brakes.

3. A mobile preheating oven according to claim 2, characterized in that: The openable oven includes a furnace body with a partial opening on one side, extending downwards from the top of the furnace body. An oven door is located at the opening and is hinged to the furnace body. A cylinder seat is mounted on the frame, and a cylinder is located between the cylinder seat and the oven door. The cylinder body is hinged to the cylinder seat. A connecting block is located on the outer side of the oven door, and the connecting block is connected to the cylinder extension rod via a connecting rod. Arc-shaped grooves are respectively formed on the sides of the furnace body and the oven door. When the cylinder pushes the connecting rod, the oven door swings around the hinge, causing the oven door to close the opening of the furnace body, thus aligning the two arc-shaped grooves to form a storage cavity, or moving the oven door away from the furnace body, thereby opening the opening of the furnace body.

4. A mobile preheating oven according to claim 3, characterized in that: The furnace body opening is provided with an inner stop, and the side of the furnace door is provided with an outer stop, the inner stop and the outer stop cooperate with each other.

5. A mobile preheating oven according to claim 3, characterized in that: The inner wall of the furnace body and the inner wall of the furnace door are respectively provided with a high-temperature resistant layer.

6. A mobile preheating oven according to claim 1, characterized in that: The combustion unit includes a burner, which is connected to a fan via an air pipeline. The burner is also connected to a gas pipeline, which is equipped with a gas proportional valve.

Images