A device and method for hot-filling sand into the tundish of a fixed-sizing nozzle

Abstract

This invention belongs to the field of metallurgy and relates to a device and method for hot sand filling in a tundish with a sizing nozzle. It includes an overall positioning device and several sand-guiding funnels mounted on the overall positioning device. Below each sand-guiding funnel is a sand-guiding alignment channel for centering the upper nozzle, ensuring the sand is aligned with the upper nozzle and guiding the filling channel. A sand-guiding funnel channel baffle is installed between the sand-guiding funnels and the sand-guiding alignment channel. Several sand-guiding funnel channel baffles are connected in series via a funnel switch connecting rod, and a funnel switch is installed at one end of the funnel switch connecting rod. This invention reduces the operational risks during hot sand filling in the tundish, improves operational efficiency, and ensures the baking effect of the upper nozzle in the tundish. Simultaneously, it improves the accuracy of hot sand filling, ensures a high success rate, reduces operational difficulty, reduces labor intensity, reduces accident risks, and improves operational safety.

Description

Technical Field

[0001] This invention belongs to the field of metallurgy and relates to a device and method for hot-filling sand into the tundish of a sizing nozzle. Background Technology

[0002] There are currently two main methods for filling the tundish nozzle with sand for small billet sizing. One method is to fill the tundish with sand before baking it online, which is called cold sand filling; the other method is to fill the tundish with sand after it has been baked online and is ready for use, which is called hot sand filling.

[0003] Cold filling of the tundish with sand generally requires 1 to 2 people. After the tundish is made and positioned, the operator uses a sand-filling spoon to gradually fill the water inlet with the guiding sand. However, this sand-filling method affects the baking effect of the water inlet, which may cause poor baking of the water inlet during the baking of the tundish, which may lead to the water inlet cracking, causing blockage of the water inlet or even steel leakage.

[0004] Hot filling of the tundish typically requires two or more people. After the tundish is baked, the workers immediately climb onto the tundish cover and gradually pour in the diversion sand. However, this method is time-sensitive, and the workers have to stand on the tundish cover at temperatures above 500°C, posing safety risks. It is also difficult to confirm whether the diversion sand has been thrown in place, which can easily lead to filling failure or even personal injury accidents. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a device and method for hot filling sand into the tundish of a sizing nozzle, so as to enable operators to quickly carry out the sand filling operation of the tundish in a safe area and ensure the safety of personnel.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tundish hot sand filling device for a sizing nozzle, comprising an overall positioning device and a plurality of sand-guiding funnels disposed on the overall positioning device. A sand-guiding alignment channel is provided below the sand-guiding funnels for centering the upper nozzle, ensuring that the sand-guiding nozzle is aligned with the upper nozzle and guiding the filling channel. A sand-guiding funnel channel baffle is provided between the sand-guiding funnels and the sand-guiding alignment channel. The plurality of sand-guiding funnel channel baffles are connected in series via a funnel switch connecting rod, and a funnel switch is provided at one end of the funnel switch connecting rod.

[0007] Optionally, the baffle of the drainage sand funnel channel is a circular plate with a diameter that is the same as the inner diameter of the drainage sand centering channel.

[0008] Optionally, the installation angles of several drainage sand funnel channel baffles are consistent to ensure that the opening and closing are consistent when the funnel switch is controlled.

[0009] Optionally, the lower two sides of the overall positioning device act on the four corners of the inner bag shell to achieve fixation through the shape of the inner bag.

[0010] Optionally, a fixing device is installed on the large bag platform above the overall positioning device; the fixing device includes a mixing wheel and a chain, the chain being connected to the overall positioning device to realize the lifting and lowering of the overall positioning device.

[0011] Optionally, centering reflectors are also installed on the outer sides of the sand filling funnels at both ends.

[0012] A method for hot-filling sand into the tundish of a sizing nozzle, using the hot-filling sand device for the tundish of a sizing nozzle as described above, includes the following steps:

[0013] S1, Preparation stage: Close the funnel switch and fill the drainage sand into the drainage sand filling funnel;

[0014] S2, After the intermediate bread is baked and the baking rack is lifted, the overall positioning device is quickly lowered. The operators on both sides of the intermediate bread fix the overall positioning device to the four corners of the intermediate bread shell to achieve installation.

[0015] S3, use the centering mirror to adjust the centering position on both sides;

[0016] S4, open the funnel switch to complete the filling of the diversion sand;

[0017] S5, raise the overall positioning device, and the operation is complete.

[0018] The beneficial effects of the present invention are as follows: The device and method for hot sand filling of the tundish with a sizing nozzle of the present invention reduce the operational risks during hot sand filling of the tundish, improve operational efficiency, and ensure the baking effect of the tundish nozzle; at the same time, it improves the accuracy of hot sand filling, ensures the success rate of sand filling, reduces operational difficulty, reduces labor intensity, reduces accident risk, and improves operational safety.

[0019] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is an overall schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 Left view without fixing devices;

[0023] Figure 3 This is a partially enlarged view of the present invention;

[0024] Figure 4 This is a side-mounted schematic diagram of the present invention.

[0025] Attached reference numerals: 1. Diverting sand filling funnel; 2. Diverting sand funnel channel baffle; 3. Diverting sand centering channel; 4. Funnel switch connecting rod; 5. Funnel switch; 6. Overall positioning device; 7. Centering reflector; 8. Fixing device. Detailed Implementation

[0026] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand 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 be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Please see Figures 1-4This invention relates to a hot-filling sand device for a fixed-sizing nozzle tundish, comprising an integral positioning device 6 and several sand-guiding funnels 1 mounted on the integral positioning device 6. A sand-guiding alignment channel 3 is provided below each sand-guiding funnel 1 for centering the upper nozzle, ensuring the sand-guiding nozzle is aligned with the upper nozzle and guiding the filling channel. A sand-guiding funnel channel baffle 2 is provided between the sand-guiding funnel 1 and the sand-guiding alignment channel 3. Several sand-guiding funnel channel baffles 2 are connected in series via a funnel switch 5 connecting rod 4, and a funnel switch 5 is provided at one end of the funnel switch 5 connecting rod 4. The channel baffle 2 is a circular plate with the same diameter as the inner diameter of the sand diversion channel 3. The installation angles of several sand diversion funnel channel baffles 2 are consistent to ensure that the funnel switches 5 open and close in unison. The lower two sides of the overall positioning device 6 act on the four corners of the inner bag shell and are fixed by the outer shape of the inner bag. A fixing device 8 is installed on the large bag platform above the overall positioning device 6. The fixing device 8 includes a mixing wheel and a chain. The chain is connected to the overall positioning device 6 to realize the lifting and lowering of the overall positioning device 6. Centering reflectors 7 are also installed on the outer sides of the sand diversion funnels 1 at both ends.

[0030] A method for hot-filling sand into the tundish of a sizing nozzle, using the hot-filling sand device for the tundish of a sizing nozzle as described above, includes the following steps:

[0031] S1, Preparation stage: Close funnel switch 5 and fill the drainage sand into drainage sand filling funnel 1;

[0032] S2, after the intermediate bread is baked and the baking rack is lifted, the overall positioning device 6 is quickly lowered. The operators on both sides of the intermediate bread fix the overall positioning device 6 to the four corners of the outer shell of the intermediate bread to achieve installation.

[0033] S3, using the centering mirror 7, adjust the centering position on both sides;

[0034] S4, open funnel switch 5 to complete the filling of diversion sand;

[0035] S5, Raise the overall positioning device 6, and the operation is complete.

[0036] This invention fixes the overall position of the sand filling device from above the tundish using the shape of the tundish shell, uses two side mirrors to manually center and adjust the sand filling angle, and opens the switch to simultaneously perform multi-flow sand filling. This allows operators to quickly perform the tundish sand filling operation in a safe area, ensuring personnel safety, while also improving the tundish baking effect and saving operation time.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sizing nozzle tundish hot sand filling device, characterized by: It includes an overall positioning device and several sand-filling funnels set on the overall positioning device. A sand-filling channel is set below the sand-filling funnel for centering the upper water inlet, ensuring that the sand-filling funnel is centered on the upper water inlet and guiding the filling channel. A sand-filling funnel channel baffle is set between the sand-filling funnel and the sand-filling channel. Several drainage sand funnel channel baffles are connected in series by a funnel switch connecting rod, and a funnel switch is installed at one end of the funnel switch connecting rod.

2. The device according to claim 1, characterized in that: The baffle of the sand diversion funnel channel is a circular plate, and its diameter is the same as the inner diameter of the sand diversion centering channel.

3. The device according to claim 2, characterized in that: The baffles of several drainage sand funnels are installed at the same angle to ensure that the opening and closing of the funnels are consistent when the funnel switches are controlled.

4. The device according to claim 1, characterized in that: The lower two sides of the overall positioning device act on the four corners of the inner bag shell, and the inner bag is fixed by its shape.

5. The tundish hot sand filling device for sizing nozzles according to claim 1, characterized in that: A fixing device is installed on the large bag platform above the overall positioning device; the fixing device includes a mixing wheel and a chain, the chain is connected to the overall positioning device to realize the lifting and lowering of the overall positioning device.

6. A device for hot sand filling of a tundish with a sizing nozzle according to claim 1, characterized in that: Centering reflectors are also installed on the outer side of the sand filling funnels at both ends.

7. A method for hot sand filling in a tundish with a sizing nozzle, using a device for hot sand filling in a tundish with a sizing nozzle according to any one of claims 1 to 6, characterized in that, Includes the following steps: S1, Preparation stage: Close the funnel switch and fill the drainage sand into the drainage sand filling funnel; S2, After the intermediate bread is baked and the baking rack is lifted, the overall positioning device is quickly lowered. The operators on both sides of the intermediate bread fix the overall positioning device to the four corners of the intermediate bread shell to achieve installation. S3, use the centering mirror to adjust the centering position on both sides; S4, open the funnel switch to complete the filling of the diversion sand; S5, raise the overall positioning device, and the operation is complete.

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