Automatic refractory material pouring device for continuous casting tundish working layer

Abstract

The utility model provides an automatic refractory material filling device for a continuous casting tundish working layer, which aims to solve the technical problems of low filling efficiency and poor effect of refractory materials of the continuous casting tundish working layer, and comprises a material storage device which consists of a material storage box and a material bin, a switch valve is connected between a material outlet of the material storage box and a material inlet of the material bin, a material level meter is arranged in the material bin, and the material level meter is connected with the material storage box. A discharge hole of the stock bin is connected with a material pump; the material conveying device is composed of a main material conveying pipeline and multiple sets of branch pipelines, one end of the main material conveying pipeline is connected with a discharging port of the material pump, the multiple sets of branch pipelines are evenly distributed in the circumferential direction of the tundish at intervals, each set of branch pipelines is connected with the main material conveying pipeline, and flow adjusting valves and flow meters are arranged on the main branch pipelines; and the dust removal device comprises a dust removal cover arranged above the tundish maintenance platform, the dust removal cover is connected with a dust removal pipeline, pouring of the refractory materials is conducted on the tundish through a plurality of sets of branch pipelines, the pouring speed of the branch pipelines is consistent, and accurate and efficient automatic pouring of the refractory materials of the tundish is achieved.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting equipment technology, and in particular to an automatic refractory material filling device for the working layer of a continuous casting tundish. Background Technology

[0002] As a very important part of continuous casting equipment, the tundish in continuous casting has the main functions of storing molten steel, purifying molten steel, and buffering molten steel. The layer of refractory material in contact with the molten steel in the tundish is called the "working layer". After one casting cycle is completed in the tundish, the working layer and the tundish residue need to be removed together and the working layer refractory material is refilled.

[0003] The standard procedure for pouring refractory into the working layer of the tundish is as follows: after removing debris from the tundish, the permanent layer is manually repaired. Then, the tundish is placed into the baking mold, and the refractory material is poured into the gap between the mold and the permanent layer by manually opening the bags one by one. When the refractory material reaches the standard height, the mold burner is ignited to heat it and solidify the refractory material into the working layer.

[0004] Traditional operations involve high labor intensity. A bag of refractory material is typically 10 kilograms in size, and each tundish working layer requires 3 tons of refractory material. Each tundish working layer requires 3-4 people to fill the bags, with each person needing to fill an average of 75-100 bags. In the summer, when temperatures are high, workers become drenched in sweat after filling just a few bags. The high labor intensity leads to a high risk of accidents such as heatstroke. At the same time, the production line generally requires 3 new tundishes per day across five production lines, resulting in a heavy workload. If there is a stagnation of billets or steel leakage, the demand for tundishes will become even more urgent.

[0005] Therefore, how to quickly, accurately, and easily complete the refractory pouring work of the intermediate ladle working layer has become an important part of reducing the workload and improving efficiency on site. Utility Model Content

[0006] This utility model provides an automatic refractory lining device for the working layer of a continuous casting tundish, to solve the technical problems of low refractory lining efficiency and poor effect in the continuous casting tundish working layer. The technical solution adopted to achieve the above objective is as follows:

[0007] An automatic refractory filling device for the working layer of a continuous casting tundish, characterized in that it comprises:

[0008] The storage device consists of a storage box and a silo. A switch valve is connected between the outlet of the storage box and the inlet of the silo. A level gauge is installed inside the silo, and a material pump is connected to the outlet of the silo.

[0009] The material conveying device consists of a main material conveying pipeline and multiple sets of branch pipelines. One end of the main material conveying pipeline is connected to the outlet of the material pump. The multiple sets of branch pipelines are evenly distributed along the circumference of the intermediate package, and each set of branch pipelines is connected to the main material conveying pipeline. Flow regulating valves and flow meters are installed on the branch main pipelines.

[0010] The dust removal device includes a dust removal hood installed above the intermediate drum maintenance platform, and the dust removal hood is connected to a dust removal pipe.

[0011] Furthermore, the dust removal hood is slidably connected to the top of the intermediate tundish maintenance platform via a sliding guide rail. The length of the sliding guide rail is distributed along the distribution direction of multiple sets of intermediate tundish maintenance platforms, and a driving device for moving the dust removal hood along the length direction of the sliding guide rail is connected between the sliding guide rail and the dust removal hood.

[0012] Furthermore, the driving device includes a drive motor, which is fixedly connected to the dust collector cover, and the output shaft of the drive motor is connected to the slide rail via a transmission mechanism.

[0013] Furthermore, a dust suction pipe is connected to the dust removal hood, and connecting pipes are provided on the dust removal pipe that correspond to the positions of the intermediate tundish maintenance table. The end of the dust suction pipe away from the dust removal hood corresponds to the position of the connecting pipe.

[0014] Furthermore, a butterfly valve is provided on the suction pipe.

[0015] Furthermore, it also includes a controller, wherein the level gauge and flow meter are both connected to the controller signal input terminal, and the material pump and flow regulating valve are both connected to the controller signal output terminal.

[0016] The advantages of this utility model are:

[0017] 1. The refractory material is poured into the tundish through multiple sets of branch pipelines set around the tundish maintenance platform. Each set of branch pipelines is equipped with a flow regulating valve and a flow meter to ensure that the pouring speed of each branch is consistent, so as to achieve accurate and efficient automatic delivery of refractory material into the tundish.

[0018] 2. A dust hood and dust collection pipe are installed above the tundish maintenance platform to effectively suppress dust during the pouring process and improve the working environment. Moreover, the dust hood adopts a movable structure, and the dust hood can be moved out after the refractory material is poured, which facilitates the subsequent lifting of the tundish by the overhead crane, as well as the subsequent hoisting and pouring of the tundish, effectively improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present utility model.

[0020] Figure 2 Top view of the connection structure between the dust collector hood and the dust collector duct.

[0021] in:

[0022] 1-Storage bin, 2-Switch valve, 3-Hopper, 4-Level gauge, 5-Pump, 6-Main conveying pipeline, 7-Branch pipeline, 8-Flow regulating valve, 9-Flow meter, 10-Intermediate drum, 11-Controller, 12-Dust hood, 13-Suction pipe, 14-Dust removal pipe, 15-Connecting pipe, 16-Butterfly valve, 17-Slide rail, 18-Drive motor. Detailed Implementation

[0023] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0024] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the view direction or positional relationship, and are only for the convenience of describing the utility model, 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, and therefore should not be construed as a limitation on the utility model.

[0025] like Figure 1 and Figure 2 The device shown is an automatic refractory filling device for the working layer of a continuous casting tundish, including a material storage device, a material conveying device, and a dust removal device. The material conveying device includes a main material conveying pipeline 6 and multiple sets of branch pipelines 7, which are evenly distributed along the circumference of the tundish 10.

[0026] Specifically, the storage device includes a storage tank 1, a silo 3, and a pump 5. The discharge port at the bottom of the storage tank 1 is connected to the inlet at the top of the silo 3 via a connecting pipe, and a switch valve 2 is installed on the connecting pipe. A level gauge 4 is installed inside the silo 3 to detect the internal material level. The inlet of the pump 5 is connected to the discharge port at the bottom of the silo 3.

[0027] One end of the main material conveying pipeline 6 is connected to the outlet of the material pump 5. Its length is distributed along a rectangle on the outside of the tundish maintenance platform. Six sets of branch pipelines 7 are evenly spaced around the tundish. Each set of branch pipelines 7 is equipped with a flow regulating valve 8 and a flow meter 9, which are used to adjust the feeding amount of each branch pipeline and to detect the material flow rate after adjustment.

[0028] The dust removal device is as follows Figure 2As shown, it includes a dust hood 12, a dust removal pipe 14, and a slide rail 17. The slide rail 17 is fixedly connected to the top of the intermediate ladle repair table 10, and its length is along... Figure 2 As shown, the dust hood 12 is slidably connected to the slide rail 17 above it, and has a truncated pyramidal shell structure with a cover at the top and no cover at the bottom. A suction pipe 13 is connected to the top. A driving device is provided between the dust hood 12 and the slide rail 17 to move the dust hood 12 along the length of the slide rail 17. The driving device includes a drive motor 18, which is fixedly connected to the dust hood 12. A transmission mechanism is connected between the drive motor 18 and the slide rail 17. It should be noted that in this embodiment, the transmission mechanism uses a rack and pinion drive, and a gear is fixedly connected to the output shaft of the drive motor 18. A rack is fixedly connected above the intermediate bag repair table 10. The length of the rack is distributed parallel to the slide rail direction. The gear meshes with the rack to achieve transmission. Of course, the transmission mechanism can also adopt conventional structures such as a conveyor belt. The setting of the transmission structure is a conventional technical means, so it will not be described in detail in this embodiment. The dust removal pipe 14 is set on one side of the intermediate bag repair table 10, and its length is distributed parallel to the length direction of the slide rail 17. One end of it is connected to a negative pressure device (not shown in the figure), and a connecting pipe 15 is set at the end near the intermediate bag repair table 10. The lengths of the connecting pipe 15 and the dust suction pipe 13 are both distributed in the left-right direction. Figure 2 As shown, driven by the drive device, the dust suction pipe 13 can move from the lower work position to the upper work position, i.e., above the intermediate ladle repair table 10, along with the dust removal hood 12. At this time, the dust suction pipe 13 and the connecting pipe 15 are in the same position, and the distance between them is no more than 2cm. Thus, the dust generated above the intermediate ladle repair table 10 during the filling process is removed by the negative pressure device, the dust removal pipe and the dust removal hood, so as to improve the working environment.

[0029] In addition, it also includes a controller 11, a level gauge 4 and a flow meter 9, both of which are connected to the signal input terminal of the controller 11. The switching valve 2, the flow regulating valve 8, and the drive motor 18 are all connected to the signal output terminal of the controller 11. According to the level signal measured by the level gauge 4, when the level is lower than the preset lower limit, the controller 11 opens the switching valve 2 to replenish the material in the hopper 3 until the level reaches the preset upper limit. Moreover, the output terminal of the controller 11 is also connected to an alarm. When the level is lower than the preset lower limit, the controller 11 controls the alarm to issue an alarm signal to remind the user and at the same time suspend the filling program, that is, the material pump 5 does not work at this time.

[0030] The working principle of this device is as follows:

[0031] When it is necessary to fill the tundish with refractory material, the controller 11 controls the drive motor 18 to work, driving the dust hood 12. Figure 2The lower position is moved to the upper position (i.e., directly above the tundish maintenance platform 10). After moving into position, the connecting pipe 15 and the dust suction pipe 13 are connected. The controller 11 controls the material pump 5 to work, injecting refractory material into the tundish through the main material conveying pipe 6 and six sets of branch pipes 7. Based on the flow signal measured by the flow meter 9 on each branch pipe 7, the controller controls the opening of the flow regulating valve 8 on the corresponding branch pipe to ensure that the injection speed of each branch pipe 7 is consistent. At the same time, during the injection process, the controller 11 controls the butterfly valve 16 to open, and uses the negative pressure device to draw negative pressure from the dust collection hood 12 to avoid dust generation during the injection process. After the injection is completed, the controller 11 controls the drive motor 18 to move the dust collection hood 12 to the upper position. Figure 2 The lower position shown is above the intermediate tundish maintenance platform 10. After the intermediate tundish has been filled, it is lifted out by a crane to carry out the filling of the next set of intermediate tundishes.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. An automatic refractory filling device for the working layer of a continuous casting tundish, characterized in that, include: The storage device consists of a storage box and a silo. A switch valve is connected between the outlet of the storage box and the inlet of the silo. A level gauge is installed inside the silo, and a material pump is connected to the outlet of the silo. The material conveying device consists of a main material conveying pipeline and multiple sets of branch pipelines. One end of the main material conveying pipeline is connected to the outlet of the material pump. The multiple sets of branch pipelines are evenly distributed along the circumference of the intermediate package, and each set of branch pipelines is connected to the main material conveying pipeline. Flow regulating valves and flow meters are installed on the branch main pipelines. The dust removal device includes a dust removal hood installed above the intermediate drum maintenance platform, and the dust removal hood is connected to a dust removal pipe.

2. The automatic refractory material filling device for the working layer of the continuous casting tundish according to claim 1, characterized in that, The dust hood is slidably connected to the top of the intermediate tundish maintenance platform via a sliding guide rail. The length of the sliding guide rail is distributed along the distribution direction of multiple intermediate tundish maintenance platforms, and a drive device is connected between the sliding guide rail and the dust hood to drive the dust hood to move along the length direction of the sliding guide rail.

3. The automatic refractory material filling device for the working layer of the continuous casting tundish according to claim 2, characterized in that, The driving device includes a drive motor, which is fixedly connected to the dust collector cover. The output shaft of the drive motor is connected to the slide rail via a transmission mechanism.

4. The automatic refractory filling device for the working layer of the continuous casting tundish according to claim 1, characterized in that, The dust removal hood is connected to a dust suction pipe, and the dust removal pipe is provided with connecting pipes distributed corresponding to the positions of the intermediate tundish maintenance table. The end of the dust suction pipe away from the dust removal hood corresponds to the position of the connecting pipe.

5. The automatic refractory material filling device for the working layer of the continuous casting tundish according to claim 4, characterized in that, The suction pipe is equipped with a butterfly valve.

6. The automatic refractory filling device for the working layer of the continuous casting tundish according to claim 1, characterized in that, It also includes a controller, wherein the level gauge and flow meter are connected to the signal input terminal of the controller, and the material pump and flow regulating valve are connected to the signal output terminal of the controller.

Images