Burning and melting drainage device capable of preventing nozzle of tundish from nodulating

Abstract

The utility model discloses a melting drainage device capable of preventing a tundish nozzle from nodulating. The melting drainage device comprises a base and a bracket, a guide assembly is arranged on the support, the guide assembly is composed of a leading-in cylinder and an arc-shaped pipe, the inner diameter of the leading-in cylinder is matched with the outer diameter of the oxygen lance, the inner diameter of the arc-shaped pipe is larger than the outer diameter of the oxygen lance, and horn-shaped openings are formed in the feeding end of the leading-in cylinder and the feeding end of the arc-shaped pipe; the support is movably arranged on the base, and the height and the direction of the support on the base can be adjusted. The directional feeding device can realize directional stable feeding of the oxygen lance, can adjust the position of the oxygen lance at any time, and has the characteristics of accurate positioning, easiness in operation, good reliability and high safety.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous casting equipment, in particular to a melting and draining device capable of preventing nodulation of the tundish nozzle. Background Art

[0002] During the continuous casting production process, molten steel is poured from the ladle into the tundish, and then the tundish diverts the molten steel to the mold for cooling and solidification. The tundish plays important roles such as diversion, pressure reduction, and metallurgy in the continuous casting process. The molten steel enters the mold through the tundish nozzle for solidification molding, and the required billet is obtained through the cooling and straightening of the bending section and the segment. In actual production, when the temperature at the bottom of the tundish is relatively low, nodulation of the nozzle will occur. The nodulation of the nozzle will cause the steel flow to become smaller and the flow to stop. At this time, the operator needs to use an oxygen lance to blow oxygen and melt the tundish nozzle for draining. In actual production practice, it is mostly manual operation, and there are the following problems: The lower tundish nozzle is vertically arranged. The operator first bends the oxygen lance into a certain arc, and then holds the oxygen lance and gradually probes it into the tundish nozzle from below the nozzle. During the oxygen blowing and draining process, the bending amplitude of the oxygen lance is large, and it is difficult to dock the tip of the oxygen lance with the nozzle. Moreover, as the oxygen lance melts, multiple adjustments are required to complete the operation. During this process, the operation intensity of the operator is high, and as the oxygen lance shortens, the operation risk of the operator increases. Content of the Utility Model

[0003] The utility model is used to overcome the defects of the existing technology and provides a melting and draining device capable of preventing nodulation of the tundish nozzle to solve the problems mentioned in the background art.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A melting and draining device capable of preventing nodulation of the tundish nozzle includes: a base and a bracket; a guiding component is arranged on the bracket. The guiding component consists of an introducing cylinder and an arc-shaped pipe. The inner diameter of the introducing cylinder matches the outer diameter of the oxygen lance, and the inner diameter of the arc-shaped pipe is larger than the outer diameter of the oxygen lance. The feeding ends of the introducing cylinder and the arc-shaped pipe are provided with a flared opening to facilitate the entry of the oxygen lance. The end of the oxygen lance is connected to an oxygen source through a joint and a pipeline; the bracket is movably arranged on the base, and its height and direction on the base are adjustable.

[0006] For the above-mentioned melting and draining device capable of preventing nodulation of the tundish nozzle, the inner diameter of the arc-shaped pipe is 1.2 - 1.5 times the outer diameter of the oxygen lance.

[0007] The above-mentioned melting drainage device that can prevent the nozzle of the tundish from forming nodules is provided with a feeding component between the guiding cylinder and the arc-shaped pipe. The feeding component is composed of a feeding frame and a driving wheel and a driven wheel arranged thereon. The bottom of the feeding frame is connected to the support; the driving wheel and the driven wheel are rubber wheels, which are respectively arranged above and below the oxygen-blowing pipe, and their circumferential surfaces are arc surfaces matching the outer surface of the oxygen-blowing pipe.

[0008] The above-mentioned melting drainage device that can prevent the nozzle of the tundish from forming nodules is provided with an intermediate seat between the support and the base; a bearing seat is arranged on the intermediate seat, and a rotating shaft is arranged below the support. The rotating shaft is installed in the bearing seat to realize the rotation of the support on the intermediate seat.

[0009] The above-mentioned melting drainage device that can prevent the nozzle of the tundish from forming nodules is provided with a vertical guide rail on the base, a slider matching the vertical guide rail is arranged on the intermediate seat, and an electric cylinder is arranged between the base and the intermediate seat.

[0010] The above-mentioned melting drainage device that can prevent the nozzle of the tundish from forming nodules is connected with a hand crank on the axle of the driving wheel.

[0011] The above-mentioned melting drainage device that can prevent the nozzle of the tundish from forming nodules is provided with universal wheels under the base. Advantages

[0012] Compared with the existing installation method of the detection probe, the utility model has the following advantages: Through the cooperation of the guiding cylinder and the arc-shaped pipe on the support, after guiding the oxygen-blowing pipe to pass through the arc-shaped pipe, it automatically bends into an arc shape. The bending radian and direction are the same each time. The oxygen-blowing pipe is constrained by the arc-shaped pipe and can be adjusted in height and direction along with the support. The head of the oxygen-blowing pipe can be accurately aligned with the nodule, and the feeding can be stable, which is convenient for accurately melting the nozzle nodule; Compared with the usual use of the oxygen-blowing pipe, generally it is bent into an arc shape manually and fed by hand. When bending manually, there are differences in the bending radian each time, and the feeding by hand is unstable. Coupled with the irregular arc shape, it affects the subsequent feeding operation. Compared with the prior art, the accuracy, convenience and operation efficiency of the utility model are all improved. Brief Description of the Drawings

[0013] The following further details the utility model in conjunction with the drawings.

[0014] Figure 1 is the overall structural schematic diagram of the utility model;

[0015] Figure 2 is the partial structural schematic diagram of the utility model;

[0016] Each label in the figure is respectively represented as:

[0017] 1. Base, 2. Bracket, 3. Inlet tube, 4. Arc tube, 5. Oxygen blowing tube, 6. Feeding rack, 7. Intermediate seat, 8. Tundish, 9. Taphole, 1-1. Vertical guide rail, 1-2. Electric cylinder, 6-1. Driving wheel, 6-2. Driven wheel, 6-3. Handwheel. Detailed implementation mode

[0018] The present utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0019] As Figure 1-2 shown, the present utility model includes: a base 1 and a bracket 2; a guiding assembly is arranged on the bracket 2, and the guiding assembly is composed of an inlet tube 3 and an arc tube 4. The inner diameter of the inlet tube 3 matches the outer diameter of the oxygen blowing tube 5, the inner diameter of the arc tube 4 is larger than the outer diameter of the oxygen blowing tube 5, a flared opening is arranged at the feeding ends of the inlet tube 3 and the arc tube 4, and the end of the oxygen blowing tube 5 is connected to an oxygen source through a joint and a pipeline. The bracket 2 is movably arranged on the base 1, and its height and direction on the base 1 can be adjusted; universal wheels are arranged below the base 1. The direction adjustment means that the bracket 2 can rotate on the base 1, and the flared opening is convenient for feeding of the oxygen blowing tube 5. Compared with the usual use, the oxygen blowing tube 5 is generally bent into an arc by hand and fed manually. Each bending radian is different when bent manually, which affects the subsequent feeding operation. Here, after being guided by the arc tube 4, the oxygen blowing tube is automatically bent into an arc, and each bending radian and direction are the same, providing a guarantee for accurate feeding.

[0020] For facilitating the entry and exit of the oxygen blowing tube in the arc tube: the inner diameter of the arc tube 4 can be designed to be 1.2 - 1.5 times the outer diameter of the oxygen blowing tube 5.

[0021] The oxygen blowing tube is relatively soft and can be pushed into the arc tube by hand for guiding and bending, or a feeding assembly can be designed for auxiliary feeding: a feeding assembly is arranged between the inlet tube 3 and the arc tube 4, and the feeding assembly is composed of a feeding rack 6 and a driving wheel 6-1 and a driven wheel 6-2 arranged thereon. The feeding rack 6 is arranged on the bracket 2 and its bottom is connected to the bracket 2; the driving wheel 6-1 and the driven wheel 6-2 are rubber wheels and are respectively arranged above and below the oxygen blowing tube 5, and their circumferential surfaces are arc surfaces matching the outer surface of the oxygen blowing tube 5.

[0022] A handwheel 6-3 can be connected to the axle of the driving wheel 6-1 to facilitate feeding by rotating the handwheel 6-3. The driving of the driving wheel 6-1 can also adopt the way of connecting a driving motor to its rotating shaft for driving.

[0023] The rubber wheel has a certain elasticity. The spatial dimension between the circumferential arc surface of the driving wheel 6-1 and the circumferential arc surface of the driven wheel 6-2 can be set to be smaller than the cross-sectional dimension of the oxygen lance 5, so as to form a certain clamping force on the oxygen lance 5, which is convenient for feeding. Of course, the driving wheel 6-1 and the driven wheel 6-2 can also adopt a structure in which a rubber layer or other elastic layer is provided on the circumferential surface of the metal wheel.

[0024] The setting method of the bracket 2 on the base 1 can adopt the following design: an intermediate seat 7 is provided between the bracket 2 and the base 1; a bearing seat is provided on the intermediate seat 7, and a rotating shaft is provided below the bracket 2, and the rotating shaft is installed in the bearing seat to realize the rotation of the bracket 2 on the intermediate seat 7. The above is the design for the direction adjustment of the bracket 2. The height adjustment of the bracket 2 can adopt the following design: a vertical guide rail 1-1 is provided on the base 1, a slider matching with the vertical guide rail 1-1 is provided on the intermediate seat 7, and an electric cylinder 1-2 is provided between the base 1 and the intermediate seat 7; the electric cylinder 1-2 can be replaced by a hydraulic cylinder or a worm and worm gear mechanism.

Claims

1. A melting drainage device capable of preventing tundish nozzle from forming nodules, characterized in that: include: A base (1) and a bracket (2); a guide assembly is arranged on the bracket (2), the guide assembly consisting of an introduction tube (3) and an arc-shaped tube (4); the inner diameter of the introduction tube (3) matches the outer diameter of the oxygen blowing tube (5); the inner diameter of the arc-shaped tube (4) is larger than the outer diameter of the oxygen blowing tube (5); the feed ends of the introduction tube (3) and the arc-shaped tube (4) are provided with trumpet-shaped openings to facilitate the entry of the oxygen blowing tube (5); the end of the oxygen blowing tube (5) is connected to an oxygen source via a joint and a pipeline; the bracket (2) is movably arranged on the base (1); and its height and direction on the base (1) are adjustable.

2. The burn-out drainage device capable of preventing tundish nozzle from forming nodules according to claim 1, characterized in that: The inner diameter of the arc-shaped tube (4) is 1.2-1.5 times the outer diameter of the oxygen blowing tube (5).

3. The burn-out drainage device capable of preventing tundish nozzle from forming nodules according to claim 1 is characterized in that: A feed assembly is arranged between the introduction tube (3) and the arc-shaped tube (4), the feed assembly comprising a feed frame (6) and a driving wheel (6-1) and a driven wheel (6-2) arranged thereon, the bottom of the feed frame (6) being connected to the bracket (2); the driving wheel (6-1) and the driven wheel (6-2) being rubber wheels, respectively arranged above and below the oxygen blowing tube (5), and the circumferential surfaces thereof being arc surfaces matching the outer surface of the oxygen blowing tube (5).

4. The burn-out drainage device capable of preventing tundish nozzle from forming nodules according to claim 1 is characterized in that: An intermediate seat (7) is provided between the bracket (2) and the base (1); a bearing seat is provided on the intermediate seat (7); a rotating shaft is provided below the bracket (2); the rotating shaft is installed in the bearing seat to realize the rotation of the bracket (2) on the intermediate seat (7).

5. The burn-out drainage device capable of preventing tundish nozzle from forming nodules according to claim 4 is characterized in that: A vertical guide rail (1-1) is arranged on the base (1), a sliding block matching the vertical guide rail (1-1) is arranged on the middle seat, and an electric cylinder (1-2) is arranged between the base (1) and the middle seat (7).

6. The burn-out drainage device capable of preventing tundish nozzle from forming nodules according to claim 3 is characterized in that: A hand-cranked wheel (6-3) is connected to the wheel axle of the driving wheel (6-1).

7. The burn-out drainage device capable of preventing tundish nozzle from forming nodules according to claim 1, characterized in that: Universal wheels are arranged below the base (1).

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