Tapping slag stopping system for converter

Abstract

The tapping slag stopping system comprises a slag stopping vehicle body, a track and a detection assembly, the slag stopping vehicle body is driven by a gear motor to move on the track in the length direction of the track, a slag stopping arm is installed on the slag stopping vehicle body, a clamping piece is arranged at one end of the slag stopping arm and used for clamping a steel bar, and the detection assembly is arranged on the track. A slag stopping plug is arranged on the steel bar, and the slag stopping arm is hinged to a supporting column on the slag stopping vehicle body. A plurality of point positions are arranged, the detection assembly is used for real-time monitoring and signal feedback, intelligent automatic control is achieved, one-key control over collaborative operation of the gear motor, the electric push rod and the pneumatic mechanism is achieved, the situation that parking is observed manually in the past is changed, the clamping structure of the clamping piece for the steel bar and the slag stopping plug is stable, operation is convenient and fast, and the working efficiency is improved. The slag stopping plug can be automatically released after being positioned, the slag stopping vehicle and parts thereof are not damaged in the process, the service life is remarkably prolonged, and the production and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, and in particular to a slag-blocking system for tapping steel in a converter. Background Technology

[0002] In converter steelmaking workshops, slag-blocking cars are needed, primarily during the later stages of converter tapping. The slag-blocking car moves forward from the furnace mouth, inserting the slag-blocking plug into the appropriate position inside the furnace. The clamping device is then released, allowing the guide portion of the slag-blocking plug to accurately insert into the tapping spout. The slag-blocking car then retreats back to its original position. The slag-blocking plug descends with the molten steel level at the tapping spout, achieving the effect of slag blocking during tapping. Previously, the slag-blocking car was controlled by an operator standing on the car, observing the tapping process through a small window. When the appropriate time for slag blocking was observed, the operator manually manipulated the buttons on the car to move it forward, lower the slag-blocking arm, release the slag-blocking arm to deploy the plug, raise the arm, and retreat back to the original position. This manual operation posed safety risks because the furnace mouth was directly facing the slag-blocking car during tapping, and the high-temperature environment made manual operation labor-intensive and prone to errors, hindering standardized operation and impacting the success rate of converter slag blocking.

[0003] For example, Chinese patent application No. 202010304177.6 discloses a positioning method for converter slag blocking, including the following steps: setting a slag blocking point, defining the position of the slag blocking car in the ready state as the slag blocking point, the slag blocking car including a slag blocking rod and a slag blocking body, the slag blocking body being disposed on the slag blocking rod; setting a marker point, moving the slag blocking car to send the slag blocking rod into the converter furnace, and placing the slag blocking body at the tapping port of the converter wheel, defining the stopping position of the slag blocking car as the marker point; setting a fixed point, moving the slag blocking car to the slag blocking point, and defining the vertical projection point of one end of the slag blocking rod on the ground as the fixed point. Positioning the slag blocking car and slag blocking body by setting the slag blocking point, fixed point, and marker point improves the success rate of converter slag blocking and the quality of molten steel, and reduces the cost of secondary smelting of scrap.

[0004] While the above solution can achieve positioning of the slag-blocking car during operation, it relies on remote manual operation, which carries the risk of misoperation, and its work efficiency needs to be further improved. In addition, since the slag-blocking body needs to be placed at the tapping port of the converter, the slag-blocking rod comes into contact with the high-temperature molten steel in the converter, which will have certain effects on corrosion and high-temperature conduction melting, reducing the service life of the device.

[0005] Therefore, it is necessary to invent a slag-blocking system for converter tapping to solve the above problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a slag-blocking system for tapping steel in a converter, which addresses the shortcomings of the prior art and solves the technical problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A slag-blocking system for a converter includes a slag-blocking car body, a track, and a detection component. The slag-blocking car body is driven by a geared motor, which moves the slag-blocking car body along its length on the track. A slag-blocking arm is installed on the slag-blocking car body. One end of the slag-blocking arm is provided with a clamping member for clamping a reinforcing bar, and a slag-blocking plug is provided on the reinforcing bar. The slag-blocking arm is hinged to a support column on the slag-blocking car body. A first cylinder is hinged to the front end of the slag-blocking car body, and its output end is hinged to the slag-blocking arm.

[0009] A second cylinder is installed at the end of the slag-blocking arm. An adjusting block is slidably connected in the cavity inside the slag-blocking arm, and a clamping member is installed on the adjusting block. The output end of the second cylinder passes through the cavity and is connected to the adjusting block in a transmission manner. An electric push rod is installed on the outside of the piston rod of the second cylinder, and a locking channel is opened on the clamping member and the adjusting block to dock with the output end of the electric push rod. A pneumatic mechanism for providing driving force is provided at the connection end of the first cylinder and the second cylinder.

[0010] Points are sequentially set on the track along the forward direction of the slag-blocking vehicle. a Points b Points c and points d These represent the reverse limit, reverse pre-limit, forward pre-limit, and forward limit of the slag-blocking vehicle body, respectively.

[0011] The detection component is used to obtain the real-time position of the slag-blocking car body, the tilt angle of the slag-blocking arm, and the cooperation status between the slag-blocking plug and the converter tapping port; the connection end of the detection component is equipped with a controller, which is used to receive the feedback signal of the detection component and control the geared motor, electric push rod and pneumatic mechanism to work together with one key.

[0012] Preferably, the detection components include a laser rangefinder, an inclination sensor, and a high-definition camera, wherein the laser rangefinder is installed on the side of the track away from the converter, the inclination sensor is installed on the slag-blocking arm, and the high-definition camera is installed on the side of the slag-blocking car body closer to the converter.

[0013] Preferably, the controller includes a microcontroller with a built-in running program. The input and output terminals of the microcontroller are electrically connected to an A / D converter and a D / A converter, respectively. The laser rangefinder, tilt sensor, and high-definition camera are all electrically connected to the A / D converter, and the geared motor, electric push rod, and pneumatic mechanism are all electrically connected to the D / A converter.

[0014] The microcontroller is also electrically connected to a touch screen and a timer. The touch screen has a one-button slag-blocking button on its display interface for controlling the system's operation and startup.

[0015] Preferably, the clamping member includes a first clamping plate and a second clamping plate. Both sides of the first clamping plate and the second clamping plate are integrally provided with protrusions, and two corresponding protrusions of the first clamping plate and the second clamping plate are provided with coaxially distributed through holes. Bolts are inserted into the two coaxial through holes and locked by nuts. An arc-shaped groove is provided on the opposite side of the first clamping plate and the second clamping plate.

[0016] Preferably, the locking channel extends at least into the arc-shaped groove of the first clamping plate, and the output end of the electric push rod is fitted with a compression block.

[0017] Preferably, the contact surfaces of the first clamping plate and the second clamping plate are set as inclined surfaces, and the two arc-shaped grooves are inclinedly distributed so that the angle between the reinforcing bar and the inner side of the slag-blocking arm is an obtuse angle.

[0018] Preferably, the cross-sectional shape of the arc-shaped groove is set to semi-elliptical, and the inner wall of the arc-shaped groove and the outer wall of the reinforcing bar are both provided with anti-slip texture.

[0019] Preferably, the outer sides of the reinforcing bars, the first clamping plate, the second clamping plate, and the extrusion block are all provided with refractory material.

[0020] Preferably, the slag-blocking plug is made of refractory material and has a honeycomb structure, with a drainage gap reserved at its bottom when the slag-blocking plug seals the converter taphole.

[0021] Preferably, the bottom of the slag-blocking arm is provided with a strip-shaped sliding hole, and the reinforcing bar slides along the length of the strip-shaped sliding hole. A maintenance opening is provided on the upper surface of the slag-blocking arm at a length corresponding to the strip-shaped sliding hole, and a closing door is movably installed in the maintenance opening.

[0022] This utility model has the following beneficial effects:

[0023] By setting up points a Points b Points c and points dThe system monitors multiple points in real time using detection components and provides feedback signals. Operators only need to press a one-button slag-blocking button to control the geared motor, electric push rod, and pneumatic mechanism to work together. Before the slag-blocking car moves to the placement position inside the furnace to place the slag-blocking plug, the slag-blocking car is pre-decelerated by frequency conversion control until it stops completely at the placement position. This achieves precise positioning of the slag-blocking car's forward and backward movements, changing the previous reliance on manual observation for stopping. The clamping structure for the steel bars and slag-blocking plug is also more stable and easy to operate. After positioning, the slag-blocking plug can be automatically released without damaging the slag-blocking car and its components, significantly improving its service life and reducing production and maintenance costs.

[0024] This system automates the entire process, eliminating the need for personnel to stand on the slag-blocking machine and observe directly at the furnace opening. Instead, personnel can remotely monitor the process via a screen, reducing safety risks. The clamping components provided in this embodiment allow for the installation of reinforcing bars and slag-blocking plugs. The distance between the first and second clamping plates is variable, resulting in a variable clamping space between the two arc-shaped grooves. This makes it suitable for installing reinforcing bars of different specifications, and the position can be adjusted to accommodate different slag-blocking plug placements under varying converter conditions and furnace ages, significantly expanding the system's applicability. Attached Figure Description

[0025] Figure 1 This is a working demonstration diagram of the converter tapping slag-blocking system provided by this utility model.

[0026] Figure 2 This is a schematic diagram of the connection structure of the main components of this utility model.

[0027] Figure 3 This is a first-view perspective view of the clamping component in this utility model.

[0028] Figure 4 This is a second-view perspective view of the clamping component in this utility model.

[0029] Figure 5 This is a control flowchart of the automatic control system in this utility model.

[0030] Among them are:

[0031] 1. Ash-blocking car body; 2. Track; 3. Gear motor; 4. Ash-blocking arm; 5. Clamping component; 6. Reinforcing bar; 7. Ash-blocking plug; 8. Support column; 9. First cylinder; 10. Second cylinder; 11. Adjusting block; 12. Squeezing block; 13. Electric push rod; 14. Locking channel; 15. Pneumatic mechanism; 16. Laser rangefinder; 17. Inclination sensor; 18. High-definition camera; 19. Microcontroller; 20. Touch screen; 21. Timer; 22. Strip-shaped sliding hole; 23. Closing door;

[0032] First clamping plate - 51; Second clamping plate - 52; Protrusion - 53; Bolt - 54; Nut - 55; Arc-shaped groove - 56. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0034] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0035] like Figure 1-5 As shown, a slag-blocking system for a converter includes a slag-blocking car body 1, a track 2, and a detection component. The slag-blocking car body 1 is driven by a geared motor 3, which moves the slag-blocking car body 1 along the length of the track 2. A slag-blocking arm 4 is installed on the slag-blocking car body 1. A clamping member 5 is provided at one end of the slag-blocking arm 4 for clamping a reinforcing bar 6. A slag-blocking plug 7 is provided on the reinforcing bar 6. The slag-blocking arm 4 is hinged to a support column 8 on the slag-blocking car body 1. A first cylinder 9 is hinged to the front end of the slag-blocking car body 1, and its output end is hinged to the slag-blocking arm 4.

[0036] A second cylinder 10 is installed at the end of the slag-blocking arm 4. An adjusting block is slidably connected in the cavity inside the slag-blocking arm 4, and a clamping member 5 is installed on the adjusting block 11. The output end of the second cylinder 10 passes through the cavity and is connected to the adjusting block 11 in a transmission manner. An electric push rod 13 is installed on the outside of the piston rod of the second cylinder 10, and a locking channel 14 that is connected to the output end of the electric push rod is opened on the clamping member 5 and the adjusting block 11. A pneumatic mechanism 15 for providing driving force is provided at the connection end of the first cylinder 9 and the second cylinder 10.

[0037] Points are sequentially set on track 2 along the forward direction of the slag-blocking car body 1. a Points b Points c and points d , respectively representing the reverse limit, reverse pre-limit, forward pre-limit, and forward limit of the slag-blocking vehicle body 1;

[0038] The detection components include a laser rangefinder 16, a tilt sensor 17, and a high-definition camera 18. The laser rangefinder 16 is installed on the side of the track 2 furthest from the converter, the tilt sensor 17 is installed on the slag-blocking arm 4, and the high-definition camera 18 is installed on the side of the slag-blocking car body 1 closest to the converter. The laser rangefinder 16 is used to acquire the real-time position of the slag-blocking car body 1; the tilt sensor 17 is used to acquire the tilt angle of the slag-blocking arm 4; and the high-definition camera 18 is used to acquire the engagement status between the slag-blocking plug 7 and the converter tapping opening. The high-definition camera 18 is a high-temperature resistant camera; to prevent damage to the camera from converter slag splashes, high-temperature resistant protective glass can be installed in front of the camera lens.

[0039] The connection end of the detection component is equipped with a controller for receiving feedback signals from the detection component. The controller includes a microcontroller 19 with a built-in running program. The input and output terminals of the microcontroller 19 are electrically connected to an A / D converter and a D / A converter, respectively. The laser rangefinder 16, the tilt sensor 17, and the high-definition camera 18 are all electrically connected to the A / D converter. The geared motor 3, the electric push rod 13, and the pneumatic mechanism 15 are all electrically connected to the D / A converter.

[0040] The microcontroller 19 is also electrically connected to a touch screen 20 and a timer 21. The touch screen 20 has a one-button slag-blocking button on its display interface for starting the system. When the operator observes the appropriate time to block slag through the touch screen 20, they press the one-button slag-blocking button. The microcontroller 19 will automatically execute the sequential control instructions of the slag-blocking program, realizing all actions of the slag-blocking vehicle body 1 moving forward quickly, decelerating forward for precise positioning, lowering the slag-blocking arm 4, releasing the slag-blocking plug 7 from the slag-blocking arm 4, raising the slag-blocking arm 4, and rapidly reversing the slag-blocking vehicle body 1 back to its original parking position.

[0041] The touch screen 20 can be installed in the control room behind the furnace and can be used to display monitoring screens, enabling remote real-time observation of the furnace during converter tapping, eliminating the need for manual observation of the converter tapping situation from the slag baffle.

[0042] The distance the slag-blocking vehicle body 1 moves forward and backward is measured in real time by the laser rangefinder 16, and the relative position of the slag-blocking vehicle body 1 is determined based on the distance, that is, the location of the slag-blocking vehicle body 1 when it reaches the designated point. a Points b Points c and points d The location.

[0043] The geared motor 3, electric push rod 13, and pneumatic mechanism 15 are controlled by a single button to work together. Before the slag blocking car body 1 moves to the placement position in the furnace to place the slag blocking plug, the slag blocking car is pre-decelerated by frequency conversion control until it stops completely at the placement position. This achieves precise positioning of the forward and backward movements of the slag blocking car, changing the previous situation of relying on manual observation to stop.

[0044] Specifically, in the above technical solution, the clamping component 5 includes a first clamping plate 51 and a second clamping plate 52. Both sides of the first clamping plate 51 and the second clamping plate 52 are integrally provided with protrusions 53. Two corresponding protrusions 53 on the first clamping plate 51 and the second clamping plate 52 are each provided with coaxially distributed through holes. Bolts 54 are inserted into the two coaxial through holes and locked in place by nuts 55. An arc-shaped groove 56 is provided on the opposite side of the first clamping plate 51 and the second clamping plate 52. By adjusting the bolts 54 and nuts 55, the distance between the first clamping plate 51 and the second clamping plate 52 can be varied, thereby changing the clamping space between the two arc-shaped grooves 56, making it suitable for installing and using reinforcing bars 6 of different specifications.

[0045] Specifically, in the above technical solution, the locking channel 14 extends at least into the arc-shaped groove 56 of the first clamping plate 51, and the output end of the electric push rod 13 is fitted with a pressing block 12. The reinforcing bar 6 is inserted into the clamping space between the two arc-shaped grooves 56 and locked by the pressing block 12 at the end of the electric push rod 13, thereby achieving the clamping installation of the reinforcing bar 6 and the slag-blocking plug 7. After positioning, the slag-blocking plug 7 can be automatically released.

[0046] Specifically, in the above technical solution, the contact surfaces of the first clamping plate 51 and the second clamping plate 52 are set as inclined surfaces, and the two arc-shaped grooves 56 are inclinedly distributed, so that the angle between the steel bar 6 and the inner side of the slag-blocking arm 4 is obtuse, thereby improving the stability of the installation of the slag-blocking plug 7 and the steel bar 6.

[0047] Specifically, in the above technical solution, the cross-sectional shape of the arc-shaped groove 56 is set to a semi-elliptical shape, and the inner wall of the arc-shaped groove 56 and the outer wall of the reinforcing bar 6 are both provided with anti-slip textures, which facilitates the installation of the reinforcing bar 6 and reduces the possibility of it sliding in the clamping state.

[0048] Specifically, in the above technical solution, the outer sides of the reinforcing bar 6, the first clamping plate 51, the second clamping plate 52 and the extrusion block 12 are all provided with refractory material to prevent them from melting and falling off during transportation.

[0049] Specifically, in the above technical solution, the slag-blocking plug 7 is made of refractory material and is set with a honeycomb structure. When the slag-blocking plug 7 blocks the tapping port of the converter, a drainage gap is reserved at its bottom to facilitate the flow of molten steel and achieve the effect of slag blocking and filtration.

[0050] Specifically, in the above technical solution, the bottom of the slag-blocking arm 4 is provided with a strip-shaped sliding hole 22, and the steel bar 6 slides along the length of the strip-shaped sliding hole 22 to facilitate the adjustment of the different placement positions of the slag-blocking plug under different furnace conditions and furnace ages of the converter. It can also be remotely set on the touch screen 20. The converter uses the production gap to periodically perform the slag-blocking car alignment operation and sets the accurate data after alignment on the touch screen 20.

[0051] A maintenance port is provided on the upper surface of the slag-blocking arm 4 at the length of the corresponding strip-shaped sliding hole 22, and a closing door 23 is movably installed in the maintenance port for easy maintenance operation.

[0052] The above solution requires no manual operation throughout the entire process, achieving one-click control of the slag-blocking plug 7 deployment. All actions from the start of the slag-blocking machine to the deployment of the slag-blocking plug 7 and its retraction to the original position are as follows:

[0053] Step 1: Start the hydraulic oil pump of the slag blocker. The hydraulic pressure is normal and there is no alarm signal from the controller. When the conditions for slag blocking are met, the control warning light will be turned on.

[0054] Step 2: Tilt the converter to a suitable angle (set according to experience). If the operator observes through remote video that there are no abnormalities, the slag can be blocked. Press the one-button slag blocking button.

[0055] Step 3, the slag-blocking vehicle body 1 is located at point a The device moves forward at a fast speed (frequency 45Hz) from its original position, and the laser rangefinder 16 measures the distance moved, with the value increasing from 0 meters upwards.

[0056] Step 4: Arrive at the location c At the point (when it has advanced 5±0.1 meters in this embodiment), the slag-blocking vehicle body 1 stops advancing rapidly and moves forward at a slow speed (frequency 10Hz);

[0057] Step 5: When the slag truck body 1 reaches the designated location d At the point (when it has advanced 5.5±0.1 meters in this embodiment), the slag-blocking vehicle body 1 stops moving forward;

[0058] Step 6: The slag-blocking arm 4 descends and stops after reaching the lower limit.

[0059] Step 7: Align the slag-blocking plug 7 with the converter tapping port, control the output end of the electric push rod 13 to pull back the extrusion block 12, so that the reinforcing bar 6 is released from the clamping member 5 and falls down. Stop after a delay of 3 seconds (at this time, the slag-blocking plug 7 has fallen into the furnace and blocked the top of the converter tapping port, while leaving a gap for liquid discharge).

[0060] Step 8: The slag-blocking arm 4 rises and stops at the middle limit (i.e., maintains a horizontal state).

[0061] Step 9: The slag-blocking vehicle body 1 moves backward at a fast speed (frequency 45Hz), and the laser rangefinder 16 measures the moving distance (in this embodiment, the value is reduced from 5.5±0.1 meters downward).

[0062] Step 10: The slag-blocking vehicle body 1 arrives at the designated location. b At the location (when the distance measurement value is 0.5±0.1 meters in this embodiment), the slag-blocking vehicle body 1 quickly reverses and stops, then moves backward at a slow speed (frequency 10Hz);

[0063] Step 11, Arrive at the location a Afterwards (when the distance measurement value is 0 to 0.1 meters in this embodiment), the slag-blocking vehicle body 1 stops, and the entire process ends.

[0064] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A slag-blocking system for tapping steel in a converter, comprising a slag-blocking car body (1), a track (2), and a detection component, wherein the slag-blocking car body (1) is driven by a geared motor (3) to move along the length of the track (2), a slag-blocking arm (4) is installed on the slag-blocking car body (1), a clamping member (5) is provided at one end of the slag-blocking arm (4) for clamping a reinforcing bar (6), and a slag-blocking plug (7) is provided on the reinforcing bar (6), characterized in that: The slag-blocking arm (4) is hinged to the support column (8) on the slag-blocking vehicle body (1). The front end of the slag-blocking vehicle body (1) is hinged to the first cylinder (9), and its output end is hinged to the slag-blocking arm (4). The end of the slag-blocking arm (4) is equipped with a second cylinder (10). An adjusting block is slidably connected in the cavity inside the slag-blocking arm (4), and a clamping member (5) is installed on the adjusting block (11). The output end of the second cylinder (10) passes through the cavity and is connected to the adjusting block (11) in a transmission manner. An electric push rod (13) is installed on the outside of the piston rod of the second cylinder (10), and a locking channel (14) is opened on the clamping member (5) and the adjusting block (11) to connect with the output end of the electric push rod. A pneumatic mechanism (15) for providing driving force is provided at the connection end of the first cylinder (9) and the second cylinder (10). Points are sequentially set on the track (2) along the forward direction of the slag-blocking vehicle body (1). a Points b Points c and points d , respectively representing the backward limit, backward pre-limit, forward pre-limit and forward limit of the slag-blocking vehicle body (1); The detection component is used to obtain the real-time position of the slag blocking car body (1), the tilt angle of the slag blocking arm (4), and the cooperation status of the slag blocking plug (7) and the converter tapping port; the connection end of the detection component is equipped with a controller, which is used to receive the feedback signal of the detection component and control the geared motor (3), electric push rod (13) and pneumatic mechanism (15) to work together with one key.

2. A combined tapping and slag skimming system for a vessel as claimed in claim 1, characterized in that: The detection components include a laser rangefinder (16), an inclination sensor (17), and a high-definition camera (18). The laser rangefinder (16) is installed on the side of the track (2) away from the converter, the inclination sensor (17) is installed on the slag-blocking arm (4), and the high-definition camera (18) is installed on the side of the slag-blocking car body (1) close to the converter.

3. A ladle slag stopping system according to claim 2, wherein: The controller includes a microcontroller (19) with a built-in running program. The input and output terminals of the microcontroller (19) are electrically connected to an A / D converter and a D / A converter, respectively. The laser rangefinder (16), tilt sensor (17) and high-definition camera (18) are all electrically connected to the A / D converter. The geared motor (3), electric push rod (13) and pneumatic mechanism (15) are all electrically connected to the D / A converter. The microcontroller (19) is also electrically connected to a touch screen (20) and a timer (21). The touch screen (20) has a one-button slag-blocking button on its display interface for controlling the system to start.

4. A combined slag and metal dam system for a vessel as claimed in claim 1, wherein: The clamping member (5) includes a first clamping plate (51) and a second clamping plate (52). Both sides of the first clamping plate (51) and the second clamping plate (52) are integrally provided with protrusions (53). The two protrusions (53) of the first clamping plate (51) and the second clamping plate (52) are provided with coaxially distributed through holes. Bolts (54) are inserted into the two coaxial through holes and locked by nuts (55). The opposite side of the first clamping plate (51) and the second clamping plate (52) are provided with arc-shaped grooves (56).

5. A run-out nozzle system for a converter as claimed in claim 4, characterized in that: The locking channel (14) extends at least into the arc-shaped groove (56) of the first clamping plate (51), and the output end of the electric push rod (13) is fitted with a pressing block (12).

6. A combined slag and metal dam system for a vessel as claimed in claim 4, wherein: The contact surfaces of the first clamping plate (51) and the second clamping plate (52) are set as inclined surfaces, and the two arc-shaped grooves (56) are inclinedly distributed, so that the angle between the steel bar (6) and the inner side of the slag-blocking arm (4) is an obtuse angle.

7. A combined slag and metal dam system for a vessel as claimed in claim 4, wherein: The cross-sectional shape of the arc-shaped groove (56) is set to semi-elliptical, and the inner wall of the arc-shaped groove (56) and the outer wall of the reinforcing bar (6) are provided with anti-slip texture.

8. A combined slag and metal dam system for a converter according to claim 5, characterized in that: The outer sides of the steel bar (6), the first clamping plate (51), the second clamping plate (52) and the extrusion block (12) are all provided with refractory material.

9. A slag stopping system for a vessel according to claim 1, wherein: The slag-blocking plug (7) is made of refractory material and is configured as a honeycomb structure. When the slag-blocking plug (7) seals the converter tapping port, a drainage gap is reserved at its bottom.

10. A run-out nozzle system for a vessel as claimed in claim 1, characterized in that: The bottom of the slag-blocking arm (4) is provided with a strip-shaped sliding hole (22), and the steel bar (6) slides along the length direction of the strip-shaped sliding hole (22). A maintenance port is provided on the upper surface of the slag-blocking arm (4) at the length range corresponding to the strip-shaped sliding hole (22), and a closing door (23) is movably installed in the maintenance port.

Images