Safety system for preventing torpedo ladle from backward flowing and iron sprinkling and steelmaking backward flowing station

Abstract

The utility model discloses a safety system for preventing a torpedo ladle from backward flowing and iron sprinkling and a steelmaking backward flowing station, and belongs to the technical field of metallurgy. The system comprises an operating handle, a controller, a direction selection switch and a torpedo tank driving mechanism, the direction selection switch at least comprises two gears; the operating handle and the direction selection switch are both connected with the input end of the controller, and the output end of the controller is connected with the torpedo tank driving mechanism. According to the system, the direction selection switch is additionally arranged, whether the torpedo ladle is tipped forwards or reversely can be selected through the direction selection switch, and then tipping and resetting of the torpedo ladle are controlled through the operation handle; and finally, the torpedo ladle driving mechanism is controlled by the controller to execute tipping and resetting actions according to a selection signal of the selection switch and an operation signal of the operation handle, so that an operator can select the tipping direction of the torpedo ladle before the torpedo ladle is tipped, the probability of iron spilling of the torpedo ladle is reduced, and the operation safety is improved.

Description

Technical Field

[0001] This application relates to the field of metallurgical technology, and in particular to a safety system for preventing backflow and iron spillage of torpedo ladles and a steelmaking backflow station. Background Art

[0002] In the steel mills of large integrated iron and steel enterprises, there are torpedo ladle car conveying lines. The ladle ready to receive molten iron is parked in the middle of the running track of the torpedo ladle car. The torpedo ladle has the function of forward and reverse (two-way) rotation, enabling the torpedo ladle to perform the iron pouring operation towards the ladle on the inner side of the track, that is, the ladle for receiving iron.

[0003] In the prior art, when the ladle is in place, the control power supply of the torpedo ladle is turned on, and then the dumping of the torpedo ladle is controlled to pour the molten iron in the torpedo ladle into the ladle. However, in the actual production process, there are a large number of torpedo ladles to be controlled, and the control wiring methods of each torpedo ladle are different. When the operating handle is pushed forward, some torpedo ladles tip forward, while some torpedo ladles tip backward. Therefore, human misoperations often occur, resulting in the tipping direction of the torpedo ladle being opposite to the direction of the ladle, causing the molten iron to fail to fall into the ladle and resulting in iron spillage, posing a great safety hazard. Utility Model Content

[0004] In view of the above problems, this application is proposed to provide a safety system for preventing backflow and iron spillage of torpedo ladles to solve the above problems. The system adds a direction selection switch; the direction selection switch is connected to the input end of the controller. The system can select whether the torpedo ladle tips forward or backward through the direction selection switch, then control the tipping and resetting of the torpedo ladle through the operating handle, and finally, the controller controls the torpedo ladle driving mechanism to perform the tipping and resetting actions according to the selection signal of the selection switch and the operation signal of the operating handle, enabling the operator to select the tipping direction of the torpedo ladle before the torpedo ladle tips, reducing the probability of iron spillage of the torpedo ladle and improving the safety of operation.

[0005] In a first aspect, this application provides a safety system for preventing backflow and iron spillage of torpedo ladles, the system includes an operating handle, a controller, a direction selection switch, and a torpedo ladle driving mechanism;

[0006] The direction selection switch includes at least two gears;

[0007] The operating handle and the direction selection switch are both connected to the input end of the controller, and the output end of the controller is connected to the torpedo ladle driving mechanism.

[0008] Optionally, the operating handle includes a screw rod, a rotating shaft, a cam, and a contact;

[0009] The screw rod is connected to the rotating shaft, and the rotating shaft is rotatably connected to the cam.

[0010] Optionally, there are multiple contact heads arranged in two columns.

[0011] Optionally, the system further includes a frequency converter connected between the controller and the torpedo ladle driving mechanism.

[0012] Optionally, the system further includes an electronic scale connected to the input end of the controller.

[0013] Optionally, the system further includes a display.

[0014] Optionally, the system further includes an alarm connected to the output end of the controller.

[0015] Optionally, the alarm is a computer speaker.

[0016] Optionally, the system further includes a liquid level sensor connected to the input end of the controller.

[0017] In a second aspect, the present application provides a steelmaking pouring station, which includes the above safety system for preventing the torpedo ladle from pouring and spilling molten iron.

[0018] The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0019] A safety system and a steelmaking pouring station for preventing the torpedo ladle from pouring and spilling molten iron provided in the embodiments of the present application. The system includes an operating handle, a controller, a direction selection switch, and a torpedo ladle driving mechanism; the operating handle and the direction selection switch are both connected to the input end of the controller, and the output end of the controller is connected to the torpedo ladle driving mechanism. The system can select whether the torpedo ladle is tilted forward or backward through the direction selection switch, then control the tilting and resetting of the torpedo ladle through the operating handle, and finally control the torpedo ladle driving mechanism to perform the tilting and resetting actions according to the selection signal of the selection switch and the operation signal of the operating handle by the controller, so that the operator can select the tilting direction of the torpedo ladle before tilting the torpedo ladle, reducing the probability of the occurrence of the phenomenon of molten iron spilling from the torpedo ladle and improving the safety of the operation.

[0020] The above description is only an overview of the technical solutions of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specific embodiments of the present application are specifically given. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Upon reading the following detailed description of the preferred embodiments, various other advantages and benefits will become apparent to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present application. Also, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0022] Figure 1 is a structural block diagram of a safety system provided by an embodiment of the present application for preventing the backflow and spilling of molten iron in a torpedo ladle;

[0023] Figure 2 is a structural block diagram of another safety system provided by an embodiment of the present application for preventing the backflow and spilling of molten iron in a torpedo ladle. Detailed Embodiments

[0024] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0025] Various schematic structural diagrams according to embodiments of the present disclosure are shown in the drawings. These figures are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art can additionally design regions / layers with different shapes, sizes, and relative positions according to actual requirements.

[0026] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, the layer / element can be directly on the other layer / element, or there can be an intermediate layer / element between them. Additionally, if a layer / element is "on" another layer / element in one orientation, then when the orientation is reversed, the layer / element can be "under" the other layer / element. In the context of the present disclosure, similar or identical components may be represented by the same or similar reference numerals.

[0027] To better understand the above technical solutions, the following will elaborate on the above technical solutions in combination with specific embodiments. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations of the technical solutions of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0028] Figure 1 is a structural block diagram of a safety system provided by an embodiment of the present application for preventing the backflow and spilling of molten iron in a torpedo ladle, as Figure 1 shown, the system includes: an operation handle 1, a controller 2, a direction selection switch 3, and a torpedo ladle drive mechanism 4.

[0029] The direction selection switch 3 includes at least two gears. The operating handle 1 and the direction selection switch 3 are both connected to the input end of the controller 2, and the output end of the controller 2 is connected to the torpedo ladle driving mechanism 4.

[0030] Among them, the direction selection switch 3 is used to select the dumping direction of the torpedo ladle, the operating handle 1 is used to select the dumping and reset actions of the torpedo ladle, and the torpedo ladle driving mechanism 4 is used to drive the torpedo ladle to dump and reset.

[0031] In this embodiment, the direction selection switch 3 may include a knob and at least two pairs of open contacts, and each pair of open contacts corresponds to one gear. If the direction selection switch 3 includes two gears, namely the first gear and the second gear, then when the knob rotates to the first gear, the first pair of open contacts closes, and when the knob rotates to the second gear, the second pair of open contacts closes, so as to realize the switching between the two gears. The two gears respectively correspond to the forward dumping and reverse dumping of the torpedo ladle. For example, the first gear corresponds to the forward dumping of the torpedo ladle, and the second gear corresponds to the reverse dumping of the torpedo ladle. When the user rotates the knob to the first gear, it means that the user hopes the torpedo ladle to dump forward, the first pair of open contacts closes, and a forward dumping signal is sent to the controller 2; when the user rotates the knob to the second gear, it means that the user hopes the torpedo ladle to dump backward, the second pair of open contacts closes, and a reverse dumping signal is sent to the controller 2.

[0032] The operating handle 1 can also be called a master controller. The operating handle 1 can be pushed forward and pulled backward to select the torpedo ladle to perform the dumping and reset actions. Specifically, the forward push operation and the pull backward operation can be defined. For example, when the operating handle 1 performs a forward push operation, a forward push signal will be sent to the controller 2, and then after the controller 2 receives the forward push signal, it controls the torpedo ladle driving mechanism 4 to drive the torpedo ladle to dump; when the operating handle 1 performs a pull backward operation, a pull backward signal will be sent to the controller 2, and then after the controller 2 receives the pull backward signal, it controls the torpedo ladle driving mechanism 4 to drive the torpedo ladle to reset; when the operating handle 1 is in the zero position, it means that the operating handle 1 has not been operated, and at this time it is a vacant position and does not send any signal to the controller 2.

[0033] The controller 2 can be a PLC controller (programmable logic controller). The PLC controller is mainly composed of functional units such as a CPU, an instruction and data memory module, an input / output module, and a power supply module. By writing a logic control program, according to external input signals (forward dumping signal, reverse dumping signal, forward push signal, and pull backward signal) to control the output signal, and controlling the torpedo ladle driving mechanism 4 to act through the output signal to realize an automated task.

[0034] The torpedo ladle driving mechanism 4 includes a tilting motor, and the torpedo ladle is driven to tilt by the tilting motor.

[0035] In this embodiment, a 24V power supply can be connected to the PLC power supply module, the PLC output module is connected to the terminal block, the terminal block is connected to the direction selection switch 3 through a cable, and the direction selection switch 3 is connected back to the PLC input module through a cable; the operating handle 1 is connected to the PLC digital input module and the analog input module through a cable to implement the selection function of dumping and resetting.

[0036] In this embodiment, the direction selection switch 3 and the operating handle 1 are used in combination to control the tilting direction of the torpedo ladle. Specifically, when the direction selection switch 3 is selected to the forward tilting gear position, a forward tilting signal will be sent to the controller 2; at this time, when the operating handle 1 performs a forward pushing action, a forward push signal will also be sent to the controller 2; then the controller 2 controls the torpedo ladle driving mechanism 4 to drive the torpedo ladle to tilt forward according to the received forward tilting signal and forward push signal. When the direction selection switch 3 is selected to the reverse tilting gear position, a reverse tilting signal will be sent to the controller 2; at this time, when the operating handle 1 performs a forward pushing action, a forward push signal will also be sent to the controller 2; then the controller 2 controls the torpedo ladle driving mechanism 4 to drive the torpedo ladle to tilt backward according to the received reverse tilting signal and forward push signal. When the operating handle 1 performs a backward pulling action, a backward pull signal will be sent to the controller 2; then the controller 2 controls the torpedo ladle driving mechanism 4 to drive the torpedo ladle to reset according to the received backward pull signal.

[0037] In this embodiment, the tapping direction test can also be carried out through the system, that is, the correct tapping operation direction is selected to facilitate the on-site personnel to judge the forward or reverse tapping and prevent misoperation of spilling iron. Specifically, after the hot metal trolley (ladle) arrives, the tilting permission signal of the torpedo ladle is valid. Operate the operating handle 1 to perform the tapping direction test. The single-direction test needs to be completed within 10s (to prevent the torpedo ladle from rotating too large an angle and spilling iron). At this time, the "forward pushing action" of the operating handle 1 corresponds to the tilting action of the torpedo ladle, and the "backward pulling action" corresponds to the reset action of the torpedo ladle.

[0038] First, select the selection switch to the first gear position (forward tilting gear position). After the operating handle 1 performs the "forward push" operation, if the rotating direction of the torpedo ladle faces the ladle, the gear position of the direction selection switch 3 remains unchanged, and the torpedo ladle is controlled to tilt forward for tapping; after the operating handle 1 performs the "forward push" operation, if the rotating direction of the torpedo ladle does not face the ladle but faces the opposite direction, reselect the gear position of the direction selection switch 3, that is, switch the gear position of the direction selection switch 3 to the second gear position (reverse tilting gear position), and control the torpedo ladle to tilt backward for tapping.

[0039] Optionally, the operating handle 1 includes a screw, a rotating shaft, a cam and a contact; the screw is connected to the rotating shaft, and the rotating shaft is rotatably connected to the cam.

[0040] In this embodiment, the screw can be integrally connected to the rotating shaft. When the screw is pushed forward or pulled backward, the rotating shaft can be driven to rotate. The rotating shaft meshes with the cam through a gear, so that the cam can be driven to rotate when the rotating shaft rotates. When the cam rotates, it presses the contact, and the circuit is connected after the contact is pressed by the cam. After the circuit is connected, a forward push or pull signal is sent to the controller 2.

[0041] Optionally, there are multiple contacts arranged in two columns.

[0042] In this embodiment, when the first column of contacts is pressed, a fast tilting signal is sent to the controller 2, and when the second column of contacts is pressed, a slow tilting signal is sent to the controller 2. The screw is pushed in one direction in sequence to realize the separation and combination of the contacts, so as to achieve the fast and slow speed control of the tilting and resetting actions of the torpedo ladle motor on site. When the screw is not pushed, that is, when the screw does not move, the master controller is in the zero position, all contacts are not pressed, and the circuit is in a completely disconnected state. Therefore, the operating handle 1 can send forward push signals, pull signals, zero position signals and speed signals (slow tilting signal and fast tilting signal). The forward push signal, pull signal and zero position signal are connected to the PLC digital input module through a cable, and the speed signal is connected to the analog input module. After the PLC receives the signal, logical operations and relational interlocks are performed internally.

[0043] Optionally, the system further includes a frequency converter, which is connected between the controller 2 and the torpedo ladle drive mechanism 4.

[0044] Figure 2 It is the structural block diagram of another safety system for preventing the backflow and iron spillage of the torpedo ladle provided by the embodiment of the present application. As Figure 2 shown, the system further includes a frequency converter 5. The controller 2 controls the frequency converter 5 through DP (short for Decentralized Periphery, a profibus communication protocol running on a 485 serial port) network communication. The output end of the frequency converter 5 is connected to the drive motor in the torpedo ladle drive mechanism 4. By changing the working power frequency of the drive motor through the frequency converter 5, the speed of the motor is changed, so as to adjust the tilting speed and reset speed of the torpedo ladle.

[0045] Optionally, the system further includes an alarm, which is connected to the output end of the controller 2.

[0046] In this embodiment, the voice broadcast prompt function can be realized by controlling the external alarm through the program timing module in the PLC.

[0047] Specifically, when the tapping direction of the torpedo ladle is correct, the PLC controls the alarm not to sound; when the tapping direction is incorrect, the PLC controls the alarm to sound. Add a timer in the PLC program. After the tapping direction is correct, the timer is triggered to start timing. When the timing reaches 10 s, if the tapping direction is still correct, the tapping continues normally without an alarm prompt, and the timer is cleared; if the tapping direction is incorrect and the tipping permission signal of the torpedo ladle is valid, the torpedo ladle starts to tip and tap, the timer starts to time, and the operating handle 1 is monitored. When the timer reaches 10 s and the tapping direction is still incorrect, an alarm reminder is given to automatically prompt an operation error.

[0048] Optionally, the alarm is a computer speaker.

[0049] In this application, the computer speaker can be arranged on the operation console in the main control room. When an alarm occurs, voice alarm can be carried out through the computer speaker to prompt that the tapping direction is incorrect. Through voice alarm, users can quickly know that the tapping direction is incorrect.

[0050] As Figure 2 shown, the system further includes an electronic scale 6, and the electronic scale 6 is connected to the input end of the controller 2.

[0051] Among them, the electronic scale 6 can be arranged on the ladle car to measure the weight of the ladle. The electronic scale 6 includes a power supply, a weight sensor and a transmitter. After the weight sensor detects the weight signal of the ladle, it sends it to the transmitter, and the transmitter converts the weight signal into a 4-20 mA current signal and sends it to the controller 2. The controller 2 converts the received current signal into the weight of the ladle, and controls whether the alarm sounds according to the weight of the ladle. The electronic scale 6 can also include an instrument to display the weight of the ladle through the instrument.

[0052] In this embodiment, it is possible to judge whether to give an alarm according to the forward push signal and the backward pull signal of the operating handle 1 and the weight of the ladle measured by the electronic scale 6. Specifically, if the operating handle 1 performs a "forward push" operation and the torpedo ladle tilts, and the unit weight increase of the ladle is greater than 5 t, it is judged that the tapping direction is correct and there is no alarm, and the system automatically taps; if the operating handle 1 performs a "backward pull" action and the torpedo ladle performs a reset action, and at this time the unit weight increase of the ladle is greater than 5 t (the test calibration value), it is judged that the tapping direction is incorrect, and an alarm prompt is given to prompt the post that the tapping direction is incorrect. At this time, the post personnel confirm the gear of the reverse selection switch and then make corresponding adjustments.

[0053] In this embodiment, the electronic scale 6 can also be interlocked with the tipping action of the torpedo ladle to prevent iron spilling when tapping without a ladle on the trolley, and at the same time prevent the occurrence of iron spilling accidents caused by excessive tapping.

[0054] The specific interlock control is as follows: when the controller 2 detects that the weight measured by the electronic scale 6 is less than 90 tons (indicating that there is no ladle on the trolley), the controller 2 controls the torpedo ladle to prevent tipping, preventing the ladle from discharging molten iron directly without sitting on the trolley, resulting in molten iron spillage; when the controller 2 detects that the weight measured by the electronic scale 6 is greater than 335 tons (indicating that the ladle is full of molten iron), the controller 2 controls the torpedo ladle to reset, preventing excessive molten iron discharge and resulting in molten iron spillage.

[0055] In this embodiment, the contact can include three columns, corresponding to the fast, medium, and slow tilting speeds of the torpedo ladle respectively. During the iron discharge process, if the contact corresponding to the fast tilting is pressed, the torpedo ladle will tilt to the maximum angle, and at this time, the iron discharge speed is relatively fast. Using this speed for a long time will cause the iron discharge speed to be too fast and the molten iron cannot stop flowing immediately, easily resulting in excessive iron discharge or overflow and spillage of the molten iron ladle; in addition, when switching from slow to fast, it may cause the tilting angle of the torpedo ladle to suddenly increase, and the molten iron flows out too fast, resulting in the molten iron splashing outside the molten iron ladle. Therefore, based on the weight data of the electronic scale and the time data of weight detection, the controller 2 can calculate the molten iron flow rate. When the molten iron flow rate calculated by the controller 2 is too large, the controller 2 will control the alarm to sound, reminding the operator to control the iron discharge flow rate, facilitating the workers to adjust the operating handle 1 according to the flow rate during the iron discharge process, and realizing reasonable iron discharge.

[0056] Optionally, the system further includes a display.

[0057] In this embodiment, the detected various signals and data can be displayed through the display. The display can be arranged on the console in the main control room. A one-key operation screen can be made on the display, and the operation screen can intuitively and clearly reflect the operation prompts for the iron discharge direction gear selection, the error iron discharge alarm screen, the electronic scale screen of the molten iron trolley, and the flow rate screen during the iron discharge process. Each step of the on-site operation can see the corresponding prompts, making the on-site iron discharge operation more convenient and reducing errors. At the same time, all the operation screen steps are added to the equipment trend software, which is convenient for diagnosing problem points in case of faults, recording the non-standard operation behaviors of the on-site, and providing management means. For example, by displaying an image screen on the display, the operator can intuitively see the iron discharge flow rate.

[0058] Optionally, the system further includes a liquid level sensor, and the liquid level sensor is connected to the input end of the controller 2.

[0059] In this embodiment, the liquid level of the molten iron in the ladle can be monitored through the liquid level sensor, and the liquid level signal is sent to the controller 2. When the controller 2 calculates through operation that the liquid level is too high, it controls the alarm to sound, reminding the operator that the liquid level is too high and stop the iron discharge.

[0060] It can be understood that for the system provided in the above embodiments, only the division of the above functional modules is used for illustration. In actual applications, the above functions can be assigned to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0061] Based on the same inventive concept, an embodiment of the present application further provides a steelmaking pouring station, and the pouring station includes any one of the safety systems for preventing the torpedo ladle from pouring and spilling iron in the previous embodiments.

[0062] The technical solutions in the embodiments of the present application at least have the following technical effects or advantages:

[0063] A safety system for preventing the torpedo ladle from pouring and spilling iron and a steelmaking pouring station provided by an embodiment of the present application, the system includes an operating handle, a controller, a direction selection switch, and a torpedo ladle driving mechanism; both the operating handle and the direction selection switch are connected to the input end of the controller, and the output end of the controller is connected to the torpedo ladle driving mechanism. It is possible to select whether the torpedo ladle is tilted forward or backward through the direction selection switch, then control the tilting and resetting of the torpedo ladle through the operating handle, and finally control the torpedo ladle driving mechanism to perform tilting and resetting actions according to the selection signal of the selection switch and the operation signal of the operating handle through the controller, so that the operator can select the tilting direction of the torpedo ladle before the torpedo ladle tilts, reducing the probability of the occurrence of the phenomenon of the torpedo ladle spilling iron and improving the safety of the operation.

[0064] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0065] Similarly, it should be understood that in order to streamline the present disclosure and help understand one or more of the various aspects of the application, in the above description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting the intention that the claimed application requires more features than those expressly recited in each claim. Rather, as reflected by the following claims, the aspects of the application lie in less than all the features of the single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim stands on its own as a separate embodiment of the present application.

[0066] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present application can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

Claims

1. A safety system to prevent the backflow of torpedo tanks and the spilling of iron, characterized in that: The system includes an operating handle, a controller, a direction selection switch and a torpedo tank drive mechanism; The direction selection switch includes at least two gears for selecting the dumping direction of the torpedo tank, the dumping direction includes at least forward dumping and reverse dumping, different gears correspond to different dumping directions, and when the gear is selected, a gear signal is triggered, and the triggered gear signal is sent to the controller; The operating handle and the direction selection switch are both connected to the input end of the controller, and the output end of the controller is connected to the torpedo tank driving mechanism; The operating handle is used to select the dumping and resetting actions of the torpedo tank, and when the dumping or resetting action is selected, a dumping or resetting signal is triggered, and the dumping or resetting signal is sent to the controller; The torpedo tank driving mechanism is used to drive the torpedo tank to dump and reset; The controller is used to: If the gear position signal corresponding to the forward dumping sent by the direction selection switch is received, and the dumping signal sent by the operating handle is received, the torpedo tank driving mechanism is controlled to drive the torpedo tank to dump forward; If the gear position signal corresponding to the reverse dumping sent by the direction selection switch is received, and the dumping signal sent by the operating handle is received, the torpedo tank driving mechanism is controlled to drive the torpedo tank to dump in the reverse direction; If a reset signal sent by the operating handle is received, the torpedo tank driving mechanism is controlled to drive the torpedo tank to reset.

2. The safety system for preventing torpedo tanks from backflowing and spilling iron according to claim 1 is characterized in that: The operating handle comprises a screw, a rotating shaft, a cam and a contact; The screw rod is connected to the rotating shaft, and the rotating shaft is rotationally connected to the cam.

3. The safety system for preventing the backflow of torpedo tanks and the spilling of iron according to claim 2 is characterized in that: The contacts include a plurality of contacts arranged in two rows.

4. The safety system for preventing torpedo tanks from backflowing and spilling iron according to claim 1 is characterized in that: The system further includes a frequency converter connected between the controller and the torpedo drive mechanism.

5. The safety system for preventing torpedo tanks from backflowing and spilling iron according to claim 1 is characterized in that: The system further comprises an electronic scale connected to an input terminal of the controller.

6. The safety system for preventing torpedo tanks from backflowing and spilling iron according to claim 1 is characterized in that: The system also includes a display.

7. The safety system for preventing the backflow and spillage of iron from a torpedo tank according to claim 1 is characterized in that: The system further comprises an alarm, which is connected to the output end of the controller.

8. The safety system for preventing torpedo tanks from backflowing and spilling iron according to claim 7 is characterized in that: The alarm is a computer speaker.

9. The safety system for preventing torpedo tanks from backflowing and spilling iron according to claim 1, characterized in that: The system further comprises a liquid level sensor connected to an input end of the controller.

10. A steelmaking backfill station, characterized in that: The backfilling station includes a safety system for preventing the backfilling and spilling of iron from a torpedo tank as described in any one of claims 1-9.

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