阅读说明：本技术 一种板坯连铸机及其板坯中间包快速堵流装置 (Slab caster and slab tundish quick flow blocking device thereof ) 是由 公斌 赵立峰 王忠刚 卢波 张海波 张丽 高志滨 薛志 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种板坯中间包快速堵流装置,包括：用于设置在板坯中间包底板下方的滑道机构；可滑动设置于所述滑道机构,用于同中间包上水口配合的堵流件；用于驱使所述堵流件沿所述滑道机构滑动的驱动机构。在本方案中,滑道机构设置在板坯中间包底板的下方,即为中间包上水口在堵流件滑动轨迹的上方。当中间包上水口发生溢流险情时,可通过驱动机构促使堵流件沿滑道机构快速滑动至中间包上水口对应的位置,以实现了中间包上水口的堵流,从而避免了设备发生重大损失,以及降低了设备的运行风险。本发明还公开了一种应用上述板坯中间包快速堵流装置的板坯连铸机。(The invention discloses a rapid flow blocking device for a slab tundish, which comprises: the slideway mechanism is arranged below the bottom plate of the slab tundish; the flow blocking piece is slidably arranged on the slide way mechanism and is used for being matched with a water feeding port of the tundish; and the driving mechanism is used for driving the flow blocking piece to slide along the slide way mechanism. In the scheme, the slide way mechanism is arranged below the bottom plate of the slab tundish, namely above the sliding track of the flow blocking piece of the tundish water feeding port. When the pouring basket water feeding port overflows, the flow blocking piece can be driven by the driving mechanism to rapidly slide to the position corresponding to the pouring basket water feeding port along the slide way mechanism, so that the flow blocking of the pouring basket water feeding port is realized, the heavy loss of equipment is avoided, and the operation risk of the equipment is reduced. The invention also discloses a slab continuous casting machine applying the slab tundish quick flow blocking device.)

1. The utility model provides a quick stifled device of flowing of package in middle of slab which characterized in that includes:

the slideway mechanism is arranged below the slab tundish bottom plate (11);

the flow blocking piece is slidably arranged on the slide way mechanism and is used for being matched with the tundish water feeding port (12);

and the driving mechanism is used for driving the flow blocking piece to slide along the slide way mechanism.

2. The slab tundish quick flow blocking device according to claim 1, wherein the slide mechanism is provided with a to-be-poured position (7), a pouring position (8) and a replacement position (9) in sequence along the direction from the inlet end to the outlet end;

the pouring position (8) is opposite to the tundish water feeding port (12), the to-be-poured position (7) is used for placing a to-be-replaced water port or the flow blocking piece, the replacing position (9) is used for placing a blocked water port moved out from the pouring position (8), and the driving mechanism can drive the flow blocking piece to slide from the inlet section to the outlet end direction along the slide way mechanism.

3. The slab tundish quick flow blocking device of claim 1, further comprising: the buckle (3) is arranged at the inlet end of the slide way mechanism and is used for placing the flow blocking piece.

4. The slab tundish quick flow blocking device of claim 3, wherein the drive mechanism comprises:

the hydraulic push rod (6) is movably arranged on the buckle (3) and is used for pushing the flow blocking piece to slide along the slide way mechanism;

and the hydraulic device is used for driving the hydraulic push rod (6) to move.

5. Slab tundish quick flow blocking device according to claim 3, characterized in that the flow blocking member is a blind plate (10), the blind plate (10) comprising:

the flow blocking plate is used for being matched with the tundish water feeding port (12);

the foot part is arranged at the lower part of the flow blocking plate and is used for being placed on the slide way mechanism or the buckle (3);

the buckle (3) is of a concave clamping groove structure used for placing the blind plate (10).

6. The slab tundish quick flow blocking device according to any one of claims 4 or 5, wherein the hydraulic device comprises: a knob control switch for controlling the movement stroke of the hydraulic push rod (6), the knob control switch comprising: the zero switch, the first-stage switch and the second-stage switch;

the zero-position switch can control the hydraulic push rod (6) to return to the bottom of the inner groove of the concave clamping groove structure, the first-stage switch can control the hydraulic push rod (6) to move to the notch of the concave clamping groove structure from the bottom of the inner groove of the concave clamping groove structure, and the second-stage switch can control the hydraulic push rod (6) to move to the front end of the position of the tundish water feeding port (12) aligned on the track mechanism from the notch of the concave clamping groove structure.

7. The slab tundish quick flow blocking device of claim 3, wherein the slide mechanism comprises: an outer arc side slideway (1) and an inner arc side slideway (2);

buckle (3) rotatable set up in outer arc side slide (1) entry end, inner arc side slide (2) are equipped with and are used for the straining inner arc side draw-in groove (5) of buckle (3).

8. The slab tundish quick flow-blocking device according to claim 7, wherein the buckle (3) is arranged at the inlet end of the outer arc side slideway (1) through a bearing.

9. The slab tundish quick flow blocking device of claim 1, wherein the material of the flow blocking member is aluminum magnesium.

10. A slab caster, comprising: the slab tundish quick flow blocking device of any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of ferrous metallurgy equipment, in particular to a slab continuous casting machine and a slab tundish quick flow blocking device thereof.

Background

At present, under the pouring mode of 'stopper rod flow control + submerged nozzle', the condition that the submerged nozzle is irregularly replaced due to the fact that aluminum-containing oxides in molten steel are separated out to block the nozzle or the nozzle is seriously corroded can occur in a slab continuous casting machine, in the replacement process, the molten steel liquid level of a crystallizer is rapidly risen due to the fact that the stopper rod flow control is out of control or other uncontrollable reasons exist, and if the stopper rod flow control cannot be rapidly blocked, various equipment of the continuous casting machine is damaged, and serious equipment and safety risks are caused.

Therefore, how to overcome the disadvantages of the prior slab caster in replacing the submerged nozzle becomes a problem that needs to be solved urgently by the technical personnel in the field.

Disclosure of Invention

In view of this, the embodiment of the present invention provides a rapid flow blocking device for a slab tundish, which can solve the problem that the molten steel level of a crystallizer rapidly rises due to an out-of-control stopper rod or other uncontrollable reasons during replacement of a submerged nozzle, thereby avoiding major equipment damage and safety risks.

In order to achieve the purpose, the invention adopts the following technical scheme:

a quick plug flow device of package in middle of slab includes:

the slideway mechanism is arranged below the bottom plate of the slab tundish;

the flow blocking piece is slidably arranged on the slide way mechanism and is used for being matched with a water feeding port of the tundish;

and the driving mechanism is used for driving the flow blocking piece to slide along the slide way mechanism.

Preferably, the slide way mechanism is sequentially provided with a position to be poured, a pouring position and a replacement position along the direction from the inlet end to the outlet end;

the pouring position is opposite to the water feeding port of the tundish, the to-be-poured position is used for placing a to-be-changed water port or the flow blocking piece, the replacing position is used for placing a blocked water port moved out from the pouring position, and the driving mechanism can drive the flow blocking piece to slide from the inlet section to the outlet end direction along the slide way mechanism.

Preferably, the method further comprises the following steps: the inlet end of the slide way mechanism is used for placing the buckle of the flow blocking piece.

Preferably, the drive mechanism comprises:

the hydraulic push rod is movably arranged on the buckle and used for pushing the flow blocking piece to slide along the slide way mechanism;

and the hydraulic device is used for driving the hydraulic push rod to move.

Preferably, the flow blocking piece is a blind plate, and the blind plate comprises:

the flow blocking plate is used for being matched with the tundish water feeding port;

the foot part is arranged at the lower part of the flow blocking plate and is used for being placed on the slide way mechanism or the buckle;

the buckle is a concave clamping groove structure used for placing the blind plate.

Preferably, the hydraulic device comprises: a knob control switch for controlling the movement stroke of the hydraulic push rod, the knob control switch comprising: the zero switch, the first-stage switch and the second-stage switch;

the zero-position switch can control the hydraulic push rod to return to the bottom of the inner groove of the concave clamping groove structure, the first-stage switch can control the hydraulic push rod to move to the notch of the concave clamping groove structure from the bottom of the inner groove of the concave clamping groove structure, and the second-stage switch can control the hydraulic push rod to move to the position, aligned on the track mechanism, of the notch of the concave clamping groove structure and the front end of the water feeding port of the tundish is located.

Preferably, the slide mechanism comprises: an outer arc side slideway and an inner arc side slideway;

the buckle is rotatable set up in outer arc side slide entry end, inner arc side slide is equipped with and is used for the straining the inner arc side draw-in groove of buckle.

Preferably, the buckle is arranged at the inlet end of the outer arc side slideway through a bearing.

Preferably, the material of the flow blocking piece is aluminum magnesium.

A slab caster comprising: the quick flow blocking device for the slab tundish is described above.

According to the technical scheme, the slide way mechanism is arranged below the bottom plate of the slab tundish, namely the water inlet of the tundish is arranged above the sliding track of the flow blocking piece. When the overflow dangerous case takes place for the middle package mouth of a river, accessible actuating mechanism orders about stifled class spare and follows the position that slide mechanism quick slip of middle package mouth of a river corresponds to the mouth of a river on the middle package has been realized to the stifled class of the mouth of a river on the middle package, thereby has avoided equipment to take place great loss, and has reduced the operation risk of equipment.

The invention also provides a slab caster, which has corresponding beneficial effects due to the adoption of the rapid flow blocking device for the slab tundish, and specific reference can be made to the previous description, so that the detailed description is omitted.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of a blind plate for blocking flow according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a blind plate according to an embodiment of the present invention;

fig. 3 is a schematic working diagram of the slideway and the hydraulic push rod according to the embodiment of the invention.

Wherein, 1 is outer arc side slide, 2 is inner arc side slide, 3 is the buckle, 4 is the hydraulic pressure pipeline, 5 is inner arc side draw-in groove, 6 is the hydraulic pressure push rod, 7 is for waiting to water the position, 8 is for pouring the position, 9 is the replacement position, 10 is the blind plate, 11 is the package bottom plate in the middle of the slab, 12 is the package mouth of a river of feeding in the middle of.

Detailed Description

The embodiment of the invention aims to provide a quick flow blocking device and a quick flow blocking method for a slab tundish, which solve the problems of equipment damage and safety risk caused by quick rising of the molten steel level of a crystallizer due to out-of-control stopper rods or other uncontrollable reasons during replacement of a submerged nozzle.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The quick flow blocking device for the slab tundish provided by the embodiment of the invention comprises:

the slideway mechanism is arranged below the slab tundish bottom plate 11;

the flow blocking piece is slidably arranged on the slide way mechanism and is used for being matched with the tundish upper nozzle 12;

and the driving mechanism is used for driving the flow blocking piece to slide along the slide way mechanism.

According to the technical scheme, in the quick flow blocking device for the slab tundish, provided by the embodiment of the invention, the slide way mechanism is arranged below the bottom plate of the slab tundish, namely, the upper water gap 12 of the tundish is arranged above the sliding track of the flow blocking piece. When the tundish upper nozzle 12 overflows, the driving mechanism drives the flow blocking piece to rapidly slide to the position corresponding to the tundish upper nozzle 12 along the slide way mechanism so as to realize the flow blocking of the tundish upper nozzle 12, avoid the occurrence of heavy loss of equipment and reduce the running risk of the equipment.

In the scheme, as shown in fig. 3, the slide way mechanism is sequentially provided with a to-be-cast position 7, a cast position 8 and a replacement position 9 along the direction from the inlet end to the outlet end;

the pouring position 8 is oppositely positioned on the water feeding port 12 of the tundish, the position 7 to be poured is used for placing a water port to be replaced or a flow blocking piece, the replacing position 9 is used for placing a blocked water port moved out from the pouring position 8, and the driving mechanism can drive the flow blocking piece to slide from the inlet section to the outlet end direction along the slide way mechanism, such as from the position 7 to be poured to the pouring position 8. It is understood that the inlet end of the slide way mechanism is the inlet side of the water port to be changed, and the outlet end is the outlet side of the blocked water port. Different stations are arranged on the track mechanism to realize quick plugging and ordered replacement of the tundish upper nozzle 12. Specifically, the flow blocking process and the replacement process of the tundish upper nozzle 12 are as follows:

the flow blocking process of the tundish water feeding port 12 comprises the following steps:

before the pouring of the water feeding port 12 of the tundish, the flow blocking piece is tightly attached to the water feeding port in advance and is placed at the position 7 to be poured, and meanwhile, the driving mechanism is driven to abut against the flow blocking piece. When meeting the overflow dangerous situation of the tundish upper nozzle 12 and needing to be blocked, the driving mechanism rapidly pushes the blocking piece to move to the pouring position 8, so that the rapid blocking of the overflow port is realized, and meanwhile, the blocked nozzle is pushed to the replacing position 9, so that an operator can take down the blocked nozzle from the outlet side.

The replacement process of the tundish upper nozzle 12 comprises the following steps:

firstly place waiting to trade the mouth of a river and wait to water position 7, then open buckle 3, and with stifled flow piece pre-installation in buckle 3, buckle 3 is detained afterwards, later utilize actuating mechanism to promote stifled flow piece fast and move to waiting to water position 7 by buckle 3 is interior, wait to trade the mouth of a river at this in-process and also be pushed to pouring position 8 by stifled flow piece along the way, meanwhile, it also is pushed to replacement position 9 by waiting to trade the mouth of a river to block up the mouth of a river, so that operating personnel will block up the mouth of a river and take off from the outlet side fast, thereby accomplished the replacement work of mouth of a river. After the water gap is replaced, if the abnormal condition that the water gap 12 of the tundish overflows occurs, the flow blocking piece is pushed to the pouring position 8 from the to-be-poured position 7 through the driving mechanism, and then the flow blocking operation is executed.

Specifically, as shown in fig. 3, the quick flow blocking device for a slab tundish, provided by the embodiment of the present invention, further includes: the arrangement is at slide mechanism entry end for place the buckle 3 of stifled piece, so that in the stifled piece pre-buried income buckle 3 (the stifled piece is installed in the concave groove structure of buckle 3), avoid taking the position of waiting to water position 7, thereby reserve the position of placing for waiting to trade the mouth of a river waiting to water position 7, and then help realizing the orderly change at the mouth of a river.

Preferably, the drive mechanism includes:

the hydraulic push rod 6 is movably arranged on the buckle 3 and used for pushing the flow blocking piece to slide along the slide way mechanism, and the structure of the hydraulic push rod can be shown in figure 3; in this scheme, buckle 3 is as the movable support body of hydraulic pressure push rod 6 for the structure of this device is compacter. Moreover, the rapid sliding of the flow blocking piece on the slide way mechanism can be realized through the pushing action of the hydraulic push rod 6;

the hydraulic device is used for driving the hydraulic push rod 6 to move; of course, the hydraulic device further comprises a switch for controlling the movement stroke of the hydraulic push rod 6 so as to indirectly control the sliding of the blocking member between different stations (details are described below).

In order to further optimize the above technical solution, the flow blocking piece is a blind plate 10, as shown in fig. 3, the blind plate 10 includes:

the flow blocking plate is matched with the tundish upper nozzle 12, so that the effect of blocking an overflow port of the tundish is achieved;

the foot part is arranged at the lower part of the flow blocking plate and is used for being placed on the slide way mechanism or the buckle 3, so that the foot part is used as a guide part for the sliding of the blind plate 10;

the buckle 3 is a concave clamping groove structure for placing the blind plate 10, and the structure can be shown in fig. 3. In this scheme, choose for use blind plate 10 as the stifled piece of flowing, mainly based on its good sealing performance, be favorable to forming good stifled effect of flowing, moreover, blind plate 10 is detachable sealing device to in order to realize stifled a lot of and flow. Moreover, the flow blocking plate and the foot part can enable the blind plate 10 to form a T-shaped structure so as to be adapted to the concave clamping groove structure of the buckle 3, and the fitting installation of the blind plate 10 in the concave clamping groove of the buckle 3 is facilitated, so that the effect of limiting the blind plate 10 is obtained.

Specifically, the hydraulic device includes: a knob control switch for controlling the movement stroke of the hydraulic push rod 6, the knob control switch comprising: the zero switch, the first-stage switch and the second-stage switch;

the zero position switch can control the hydraulic push rod 6 to return to the bottom of an inner groove of the concave groove structure, namely, the hydraulic push rod 6 is reset to the bottom of the concave groove so as to vacate space in the concave groove, a blind plate 10 is conveniently pre-installed, and a water gap to be replaced is reserved at a position 7 to be poured;

the first-stage switch can control the hydraulic push rod 6 to move from the bottom of the inner groove of the concave clamping groove structure to the notch of the concave clamping groove structure, so that the blind plate 10 is pushed to the to-be-poured position 7 of the slide way mechanism from the bottom of the concave groove of the buckle 3, in the process, a to-be-replaced water gap which is pre-placed in the to-be-poured position 7 is also pushed to the to-be-poured position 8 along the same trend, correspondingly, a blocked water gap which is positioned in the to-be-replaced water gap is pushed to the replacement position 9 by the to-be-replaced water gap, and then an operator quickly removes the blocked water gap which is replaced from the outlet side, so that the;

the second-stage switch can control the hydraulic push rod 6 to move from the notch of the concave clamping groove structure to the front end (namely the front end of the pouring position 8) of the position of the tundish water feeding port 12 aligned on the track mechanism, so that when the tundish water feeding port 12 overflows, the blind plate 10 is pushed to the pouring position 8 from the to-be-poured position 7, the overflow port is blocked, namely, the flow blocking operation is executed when the overflow dangerous condition occurs after the water feeding port is replaced, and the equipment is prevented from suffering great loss.

In this aspect, as shown in fig. 1 and 3, the slide mechanism includes: an outer arc side slideway 1 and an inner arc side slideway 2; it should be noted that, the inner side and the outer side of the slideway mechanism are relative to the corners close to the installation site, the side with narrower operation space is the inner side, and correspondingly, the side far away from the corners of the installation site, the side with more open operation space is the outer side;

the buckle 3 is rotatably arranged at the inlet end of the outer arc side slideway 1, and the inner arc side slideway 2 is provided with an inner arc side clamping groove 5 for fastening the buckle 3. The buckle 3 is arranged through the rotation around the inlet end of the outer arc side slide way 1, so that the buckle 3 can turn around the outer arc side slide way 1, the turning axis is parallel to the sliding direction of the slide way mechanism, and a flow blocking piece (namely a blind plate with a T-shaped structure is installed in a concave-shaped clamping groove structure of the buckle 3) can be installed better. And, can realize the lock of buckle 3 through inner arc side draw-in groove 5 to reach the effect of fastening buckle 3.

In order to further optimize the technical scheme, the buckle 3 is arranged at the inlet end of the outer arc side slideway 1 through a bearing, so that the buckle 3 can be rapidly turned over, and the blind plate 10 is better placed in the concave groove of the buckle 3. In this scheme, select for use the bearing as the rotation piece of buckle 3, have characteristics such as the rolling resistance is little, wear resistance is good. Of course, other rotating members, such as hinges, may be used, and are not described in detail herein.

Preferably, the material of the flow blocking member is aluminum magnesium. The aluminum magnesium is used as a refractory material, and can meet the high temperature resistance requirement of the flow blocking piece. In the scheme, aluminum magnesium is selected as the material of the flow blocking piece, and the service life of the flow blocking piece is ensured mainly based on the good slag resistance and thermal shock resistance of the flow blocking piece.

An embodiment of the present invention further provides a slab caster, including: the quick flow blocking device for the slab tundish is described above. Due to the adoption of the technical scheme, the method has corresponding beneficial effects, and specific reference can be made to the foregoing description, so that the detailed description is omitted.

The present solution is further described below with reference to specific embodiments:

the core of the application is to provide a quick stifled flow device of package in middle of slab, a quick stifled flow device of package in middle of slab can realize rising or under stopper rod out of control condition fast unusually at crystallizer liquid level, when the stifled flow of package mouth in other needs, the quick shut blocks up the mouth of a river, prevents that equipment from damaging and reduction safety risk. The other core of the application also provides a flow blocking method by utilizing the quick flow blocking device for the slab tundish, and the flow blocking method by utilizing the quick flow blocking device for the slab tundish can realize quick replacement of a water gap so as to save the operation time.

In the embodiment, the rapid flow blocking device for the slab tundish comprises a buckle 3 with a hydraulic push rod, a slide way, a blind plate 10 and a hydraulic device; the upper surface of the casting blank in the running direction is an inner arc side, and the lower surface is an outer arc side. The slide comprises outer arc side slide 1 and inner arc side slide 2, and outer arc side slide 1 mouth of a river entry end and buckle 3 adopt the bearing to be connected, and inner arc side slide 2 outside is equipped with the draw-in groove that can fix buckle 3, and the outlet side of slide is the open-type, and outer arc side, inner arc side slide length 60cm can set gradually from the entrance point to the exit end of slide and wait to water position 7, pour position 8, replacement position 9, and every position occupies 20 cm's position respectively. The buckle 3 with the hydraulic push rod is of a concave clamping groove structure, the hydraulic push rod 6 is arranged at the bottom of the concave shape, the maximum extension distance of the hydraulic push rod is 40cm, and the maximum area in the groove is 20cm x 20 cm. The blind plate 10 is made of aluminum-magnesium material and has a T-shaped structure, the upper contact plane (namely the choke plate in the above) is 20cm x 8cm, and the leg part is 10cm long. The hydraulic device comprises a hydraulic cylinder, a hydraulic pipeline 4 and a secondary knob control switch, wherein a zero position switch controls the hydraulic push rod 6 to be located at the bottom of the concave groove of the buckle 3 without displacement change, a first-stage switch controls the hydraulic push rod 6 to push 20c, and a second-stage switch controls the hydraulic push rod 6 to push 40 cm.

Before the well package mouth of a river is opened and is watered, hug closely the mouth of a river with the blind plate in advance and place the position of waiting to water in the slide, transfer the knob switch in hydraulic means to the one-level, hydraulic push rod impels 20cm in the buckle recess, behind the straining buckle, the blind plate outside is hugged closely to hydraulic push rod, need carry out the plug flow operation if meet abnormal conditions, knob switch transfers to the second grade, hydraulic push rod fast action pushes away the blind plate to pouring the position, the mouth of a river is pushed away to the replacement position, operating personnel will replace the position mouth of a river and take off from the outlet side fast, accomplish the plug flow operation.

When the mouth of a river needs to be changed, open the buckle, will wait to change the mouth of a river and place waiting to water the position, knob switch transfers to the zero-bit, hydraulic push rod moves back to concave trough bottom portion, and the blind plate is placed in the concave trough of buckle, and behind the straining buckle, knob switch transfers to the one-level, and hydraulic push rod fast action pushes away the blind plate to waiting to water the position, waits to change the mouth of a river and pushes away to pouring position, and the pouring mouth of a river pushes away to the replacement position, and operating personnel picks the replacement position mouth of a river from the outlet side fast, accomplishes mouth of a river. After the water gap is replaced, if an abnormal condition occurs, the knob switch is immediately adjusted to the second stage, and the flow blocking operation is executed, so that the damage of major equipment is avoided, and the safety risk is reduced.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.