Electrically heated baking of continuous casting nozzle

Abstract

The utility model discloses an electric heating baking continuous casting pouring steel water gap device, including base, the top fixed mounting of base has the fixed frame, still include: the inside upper symmetry of fixed frame rotatory connection has the screw rod, and the bottom of two screw rods is rotatory connected with base, and the outside upper of two screw rods is screw -threaded coupled with movable plate, and the top fixed mounting of movable plate has the placing plate, and the top center fixed mounting of placing plate has the heating rod, and the both sides of the top of placing plate symmetry is provided with positioning assembly, wherein, the outside lower of two screw rods all fixed mounting has the transmission, and two transmission wheels are rotatory connected through the belt, and the outside of one side screw rod is located the top fixed mounting of second bevel gear of transmission wheel, make before using to the water gap, can carry out the even heating to the water gap in the water gap, can promote the efficiency of water gap baking heating, and can avoid the oxidation in the water gap heating process, promote the service life of water gap.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting sprue technology, specifically to an electric heating device for baking continuous casting sprues. Background Technology

[0002] When molten steel flows into the nozzle, if the nozzle temperature is too low (especially during cold starts or restarts after shutdown), the molten steel will cool down rapidly, increase in viscosity, or even solidify locally, resulting in a "cold steel blockage" phenomenon. Therefore, the nozzle needs to be baked and heated before using the continuous casting nozzle.

[0003] Currently, when baking the sprue of continuous casting steel before use, gas flame heating is mostly used. Flame heating is prone to oxidation and cannot guarantee the uniformity and efficiency of baking. In addition, baking can only be carried out on the outside of the sprue. During the use of the sprue, molten steel flows through the inside. Baking the outside of the sprue requires a longer baking time, resulting in low baking efficiency.

[0004] An electrically heated baking device for continuous casting sprue nozzles is proposed to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide an electric heating device for baking the sprue of continuous casting steel, in order to solve the problems mentioned in the background art. Currently, when baking the sprue of continuous casting steel before use, gas flame heating is mostly used. Flame heating is prone to oxidation and cannot guarantee the uniformity and efficiency of baking. In addition, baking can only be carried out on the outside of the sprue. During the use of the sprue, molten steel flows through the inside. Baking the outside of the sprue requires a longer baking time and the baking efficiency of the sprue is low.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electric heating and baking device for continuous casting steel gates, including a base; A mounting bracket is fixedly installed on the top of the base; Also includes: The upper inner side of the fixed frame is symmetrically connected with lead screws, and the bottom ends of the two lead screws are rotatably connected to the base. The upper outer side of the two lead screws is threaded with a movable plate. The top of the fixed frame is fixedly installed with a placement plate, and the center of the top of the movable plate is fixedly installed with a heating device. The placement plate and the top of the fixed frame are connected by a through hole, and the heating rod of the heating device extends upward through the through hole. Among them, a transmission wheel is fixedly installed on the lower outer side of each of the two lead screws, and the two transmission wheels are rotatably connected by a belt. A second bevel gear is fixedly installed on the outer side of one lead screw above the transmission wheel. A servo motor is fixedly installed on one side of the fixed frame, and the output end of the servo motor passes through the fixed frame and is fixedly installed with a first bevel gear, and the first bevel gear is meshed with a second bevel gear.

[0007] Preferably, a heat insulation cover is provided above the fixing frame, and a nitrogen pipe is connected through the upper side of one side of the heat insulation cover.

[0008] Preferably, a steel wire rope is fixedly installed on the top of the heat insulation cover, and a support frame is fixedly installed on one side of the top of the base. Two guide wheels are rotatably connected to the top of one side of the support frame, and the steel wire rope is rotatably connected to the guide wheels. A winch is fixedly installed on the top of the base on one side of the support frame, and the end of the steel wire rope away from the heat insulation cover is connected to the drive wheel of the winch.

[0009] Preferably, the heat insulation cover is symmetrically equipped with support frames on the side near the upright, and both support frames are slidably connected to the upright, and both support frames have through holes at their tops.

[0010] Preferably, a sealing ring is fixedly installed at the bottom of the heat insulation cover, and a fire-resistant fiber blanket is provided at the bottom of the sealing ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are: this electrically heated and baked sprue nozzle device for continuous casting allows for uniform heating of the nozzle inside before use, improving the efficiency of the heating process and preventing oxidation during heating, thus extending the service life of the nozzle. The specific details are as follows: Before use, the sprue is preheated by placing it on top of the heating rod on the mounting plate. Then, the servo motor is started, and the meshing of the first and second bevel gears drives a lead screw on one side to rotate. The two drive wheels work together to rotate the two lead screws simultaneously, causing the movable plate to move upwards. A toothed belt can be used between the drive wheels to prevent slippage. As the movable plate moves, the heating rod moves upwards, passing through the through-hole and extending into the sprue. Then, a winch controls the unwinding of the wire rope, causing the insulation cover to descend. The sealing ring at the bottom of the insulation cover abuts against the inclined side of the sprue. The control panel activates the heating rod, allowing for preheating inside the sprue. During heating, nitrogen gas can be introduced into the insulation cover through a nitrogen pipe to prevent oxidation of the sprue. This ensures uniform heating of the sprue before use, improving heating efficiency and preventing oxidation, thus extending the sprue's lifespan. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram of region A in the middle.

[0013] In the diagram: 1. Base; 101. Fixing frame; 102. Lead screw; 103. Movable plate; 104. Placement plate; 105. Heating rod; 106. Transmission wheel; 107. Servo motor; 108. First bevel gear; 109. Second bevel gear; 110. Winch; 111. Through hole; 112. Stand; 113. Insulation cover; 114. Nitrogen pipe; 115. Support frame; 116. Wire rope; 117. Guide wheel; 118. Sealing ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This utility model provides a technical solution: an electric heating and baking device for continuous casting steel gates, including a base 1, a fixed frame 101 fixedly installed on the top of the base 1, and further including: two lead screws 102 symmetrically rotatably connected to the upper inner side of the fixed frame 101, with the bottom ends of the two lead screws 102 rotatably connected to the base 1, and a movable plate 103 threadedly connected to the upper outer side of the two lead screws 102; a placement plate 104 fixedly installed on the top of the fixed frame 101, and a heating device fixedly installed at the top center of the movable plate 103; a through hole 111 is formed through the placement plate 104 and the top of the fixed frame 101, and the heating rod 105 of the heating device extends upward through the through hole 111; wherein, the two lead screws 102 are rotatably connected to the upper inner side of the fixed frame 101, with the bottom ends of the two lead screws 102 rotatably connected to the base 1, and ... A transmission wheel 106 is fixedly installed on the lower outer side of the rod 102, and the two transmission wheels 106 are connected by a belt. A second bevel gear 109 is fixedly installed on the outer side of the lead screw 102 above the transmission wheel 106. A servo motor 107 is fixedly installed on the lower side of the fixing frame 101, and the output end of the servo motor 107 passes through the fixing frame 101 and is fixedly installed with a first bevel gear 108. The first bevel gear 108 and the second bevel gear 109 are meshed and connected, so that the sprue can be uniformly heated inside the sprue before use. This can improve the efficiency of sprue baking and heating, and can avoid oxidation during the sprue heating process, thus extending the service life of the sprue.

[0016] A heat insulation cover 113 is installed above the fixed frame 101, and a nitrogen pipe 114 is connected through the upper side of one side of the heat insulation cover 113, so that the movement of the movable plate 103 can drive the movement of the movable block 110. A steel wire rope 116 is fixedly installed on the top of the heat insulation cover 113, and a vertical frame 112 is fixedly installed on one side of the top of the base 1. Two guide wheels 117 are rotatably connected to the upper side of one side of the vertical frame 112, and the steel wire rope 116 is rotatably connected to the guide wheels 117. A winch 110 is fixedly installed on the top of the base 1 on one side of the vertical frame 112. The end of the wire rope 116 away from the insulation cover 113 is connected to the drive wheel of the winch 110 to facilitate the movement of the insulation cover 113. Support frames 115 are symmetrically installed on the side of the insulation cover 113 near the upright frame 112, and both support frames 115 are slidably connected to the upright frame 112. The top of both support frames 115 is provided with a through hole to support the movement of the insulation cover 113. A sealing ring 118 is fixedly installed at the bottom of the insulation cover 113, and a refractory fiber blanket is provided at the bottom of the sealing ring 118 to improve the sealing performance when the water inlet is heated.

[0017] Working principle: Before using this electrically heated and baked continuous casting nozzle device, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 3 As shown, before use, the sprue is preheated by placing it on top of the placement plate 104, with the heating rod 105 fitted over it. Then, the servo motor 107 is started, and the meshing of the first bevel gear 108 and the second bevel gear 109 drives one side of the lead screw 102 to rotate. The two drive wheels 106 work together to rotate both lead screws 102 simultaneously, causing the movable plate 103 to move upwards. A toothed belt can be used between the drive wheels 106 to prevent slippage. As the movable plate 103 moves, the heating rod 105 moves upwards, allowing it to pass through the through hole 111 and extend into the sprue. Then, the wire rope 116 is unwound by the winch 110, causing the insulation cover 113 to descend. The sealing ring 118 below the insulation cover 113 then abuts against the inclined side of the sprue. The heating rod 105 is activated by the control panel, allowing the sprue to be baked and heated inside. During the heating process, nitrogen gas can be introduced into the insulation cover 113 through the nitrogen pipe 114 to prevent oxidation of the sprue during heating. This allows the sprue to be heated evenly inside before use, improving the efficiency of the sprue baking and heating process and preventing oxidation during heating, thus extending the service life of the sprue.

[0018] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric heating and baking device for continuous casting sprue, comprising a base (1); A fixing bracket (101) is fixedly installed on the top of the base (1). Its features are, Also includes: The upper inner side of the fixed frame (101) is symmetrically connected with screw rods (102), and the bottom ends of the two screw rods (102) are rotatably connected to the base (1). The upper outer side of the two screw rods (102) is threaded with a movable plate (103). The top of the fixed frame (101) is fixedly installed with a placement plate (104), and the center of the top of the movable plate (103) is fixedly installed with a heating device. The placement plate (104) and the top of the fixed frame (101) are connected by a through hole (111), and the heating rod (105) of the heating device extends upward through the through hole (111). Among them, a transmission wheel (106) is fixedly installed on the lower outer side of each of the two lead screws (102), and the two transmission wheels (106) are rotatably connected by a belt. A second bevel gear (109) is fixedly installed on the outer side of one lead screw (102) above the transmission wheel (106). A servo motor (107) is fixedly installed on one side of the fixed frame (101), and the output end of the servo motor (107) passes through the fixed frame (101) and is fixedly installed with a first bevel gear (108), and the first bevel gear (108) meshes with a second bevel gear (109).

2. The electrically heated baking device for continuous casting steel gates according to claim 1, characterized in that: A heat insulation cover (113) is provided above the fixed frame (101), and a nitrogen pipe (114) is connected through the top of one side of the heat insulation cover (113).

3. The electrically heated baking device for continuous casting steel gates according to claim 2, characterized in that: A steel wire rope (116) is fixedly installed on the top of the heat insulation cover (113), and a support frame (112) is fixedly installed on one side of the top of the base (1). Two guide wheels (117) are rotatably connected above one side of the support frame (112), and the steel wire rope (116) is rotatably connected to the guide wheels (117). A winch (110) is fixedly installed on the top of the base (1) on one side of the support frame (112), and the end of the steel wire rope (116) away from the heat insulation cover (113) is connected to the drive wheel of the winch (110).

4. The electrically heated baking device for continuous casting steel gates according to claim 3, characterized in that: The heat insulation cover (113) is symmetrically equipped with support frames (115) on the side near the upright frame (112), and both support frames (115) are slidably connected to the upright frame (112), and both support frames (115) have through holes on their tops.

5. The electrically heated baking device for continuous casting steel gates according to claim 2, characterized in that: A sealing ring (118) is fixedly installed at the bottom of the heat insulation cover (113), and a fire-resistant fiber blanket is provided at the bottom of the sealing ring (118).

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