Cutting slag collecting device of slab continuous casting machine

Abstract

The utility model relates to a cutting slag collecting device of a slab continuous casting machine, and belongs to the technical field of continuous casting in the metallurgical industry. Comprising a collecting hopper, a cutting roller is arranged above the collecting hopper, and a continuous casting billet is arranged on the cutting roller; a collecting guide plate is arranged above the collecting hopper, and the bottom of the collecting guide plate is connected with the collecting hopper; a slag flushing water pipe is arranged between the collecting guide plate and the cutting roller, an upper nozzle set is arranged at the top of the slag flushing water pipe, and the spraying direction of the upper nozzle set faces the cutting roller; a lower nozzle set is arranged at the bottom of the slag flushing water pipe, and the spraying direction of the lower nozzle set faces the collecting guide plate. A plurality of water outlet holes are formed in the collecting hopper, and a slag flushing trough is arranged below the collecting hopper. The device is simple in structure, large cutting slag is collected in the collecting hopper, the large cutting slag is prevented from blocking the slag flushing trough, and the labor intensity of workers is relieved; and the cutting slag on the cutting roller is flushed by the slag flushing water sprayed by the upper nozzle, so that the cutting slag is prevented from being adhered to the cutting roller, and the quality of a casting blank is improved.

Description

Technical Field

[0001] The utility model relates to a cutting slag collecting device for a slab continuous casting machine, belonging to the technical field of continuous casting in the metallurgical industry. Background Art

[0002] During the continuous casting process, the solidified ingot needs to be cut into a certain size. At present, the fire cutter is widely used for cutting, but it will produce a lot of iron oxide cutting residues, which will fall under the fire cutter. Therefore, in the steelmaking continuous casting workshop, a slag flushing ditch is often set under the fire cutter to collect the cutting slag. When the fire cutter cuts the ingot, the cutting slag will fall into the slag flushing ditch under the fire cutter. Some small-sized cutting slag will be flushed into the vortex pool or sedimentation tank by the slag flushing water in the slag flushing ditch, and the others that cannot be flushed away will remain in the slag flushing ditch. Over time, the cutting slag in the slag flushing ditch will accumulate higher and higher. When the cutting slag accumulates to touch the bottom surface of the ingot, it is easy to cause scratches on the bottom surface of the ingot, thereby affecting the quality of the ingot.

[0003] In order to prevent the slag from being accumulated too high and scratching the bottom of the ingot, when the slag accumulates to a certain extent, the operator needs to stop production and clean it manually. This slag cleaning method is not only labor-intensive and dangerous for workers, but also takes a long time to clean the slag, which greatly affects production efficiency.

[0004] In order to better collect and clean the cutting slag, Chinese Patent 20202135199.1 discloses a continuous casting machine cutting slag collection device, including a cutting slag collection device bucket, the cutting slag collection device bucket is located on the outside below the fire cutting machine, and an inclined cutting slag collection device groove is provided below the fire cutting machine, and the lower end of the cutting slag collection device groove is connected to the cutting slag collection device bucket. The cutting slag collection bucket of this patent is located on the outside of the fire cutting machine, and the direction of the cutting slag collection groove is perpendicular to the casting direction of the continuous casting machine. The device is suitable for multi-stream square and round billet continuous casting machines, but not for slab continuous casting machines. Unlike square and round billet fire cutting machines, slab continuous casting machines take a long time to cut a piece of billet. The fire cutting machine will walk while cutting in the casting direction, and the fire cutting machine has a long range of movement, which leads to the patent mentioning that the width of the cutting slag collection groove will be very wide, and the cutting slag collection device bucket will be very large, making it difficult to lift. At the same time, the roller in the cutting area of ​​slab continuous casting billet is prone to sticking cutting slag. If it is not removed immediately, it will cause the billet to be scratched. Severe billet deviation on the roller will cause accidents. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a slab continuous casting machine cutting slag collection device in view of the above-mentioned prior art. The device has a simple structure and can collect large pieces of cutting slag to avoid clogging the slag flushing groove by large pieces of cutting slag, thereby reducing the labor intensity of workers; it can prevent the cutting slag from sticking to the cutting roller and improve the quality of the casting.

[0006] The technical solution adopted by the utility model to solve the above-mentioned problem is: a cutting slag collection device for a slab continuous casting machine, comprising a collecting bucket, a cutting roller is arranged above the collecting bucket, and the continuous casting slab is arranged on the cutting roller; a collecting guide plate is arranged above the collecting bucket, and the bottom of the collecting guide plate is connected to the collecting bucket; a horizontally arranged slag flushing water pipe is arranged between the collecting guide plate and the cutting roller, an upper nozzle group is arranged on the top of the slag flushing water pipe, and the spraying direction of the upper nozzle group is toward the cutting roller; a lower nozzle group is arranged at the bottom of the slag flushing water pipe, and the spraying direction of the lower nozzle group is toward the collecting guide plate; a plurality of water outlet holes are arranged on the collecting bucket, and a slag flushing groove is arranged below the collecting bucket.

[0007] The collecting bucket is in the shape of a funnel that is wide at the top and narrow at the bottom, and the water outlets are arranged on the front plate and the rear plate of the collecting bucket.

[0008] The upper nozzle group comprises a plurality of upper nozzles, and the plurality of upper nozzles are arranged at intervals along the length direction of the slag flushing water pipe.

[0009] The lower nozzle group comprises a plurality of lower nozzles, the plurality of lower nozzles are arranged at intervals along the length direction of the slag flushing water pipe, and the upper nozzles and the lower nozzles are arranged in a staggered manner.

[0010] The collecting guide plate is arranged to be inclined outward.

[0011] Compared with the prior art, the utility model has the following advantages: a cutting slag collecting device for a slab continuous casting machine has a simple structure, and large pieces of cutting slag are collected in a collecting bucket, thereby preventing large pieces of cutting slag from clogging the slag flushing groove and reducing the labor intensity of workers; the cutting slag on the cutting roller is flushed with slag flushing water sprayed from an upper nozzle, thereby preventing the cutting slag from sticking to the cutting roller and improving the quality of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a slab continuous casting machine cutting slag collection device according to an embodiment of the utility model;

[0013] In the figure, 1 is a flame cutting machine, 2 is a continuous casting billet, 3 is a cutting roller, 4 is a slag flushing water pipe, 5 is a collecting guide plate, 6 is a collecting bucket, 7 is a slag flushing groove, 8 is a water outlet, 9 is an upper nozzle, and 10 is a lower nozzle. DETAILED DESCRIPTION

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] like Figure 1As shown, a slab continuous casting machine cutting slag collection device in this embodiment includes a collection bucket 6, a cutting roller 3 is arranged above the collection bucket 6, a fire cutter 1 is arranged above the cutting roller 3, and the continuous casting billet 2 is arranged on the cutting roller 3. A collection guide plate 5 arranged outwardly inclined is arranged above the collection bucket 6, and the bottom of the collection guide plate 5 is connected to the collection bucket. The fire cutter 1 cuts the continuous casting billet 2 on the cutting roller 3, and the cutting residue falls into the collection bucket 6 through the collection guide plate 5. A horizontally arranged slag flushing water pipe 4 is arranged between the collection guide plate 5 and the cutting roller 3, and a plurality of upper nozzles 9 arranged at intervals are arranged on the top of the slag flushing water pipe 4. The spray direction of the upper nozzles 9 is all toward the cutting roller 3, and the slag flushing water sprayed by the upper nozzles 9 washes the cutting slag adhered to the cutting roller 3, and then falls on the collection guide plate 5. A plurality of lower nozzles 10 are arranged at intervals at the bottom of the slag flushing water pipe 4. The upper nozzles 9 and the lower nozzles 10 are arranged staggered along the length direction of the slag flushing water pipe 4, and the spraying direction of the lower nozzles 10 is toward the collecting guide plate 5. The slag flushing water sprayed by the lower nozzles 10 washes the cutting slag falling into the collecting guide plate 5, allowing it to slide smoothly into the collecting bucket 6. A plurality of water outlet holes 8 are respectively provided on the front and rear steel plates of the collecting bucket 6 to facilitate the separation of slag water and the collection of cutting slag. The slag flushing water then flows to the slag flushing ditch 7 through the water outlet holes and finally flows into the cyclone pool.

[0016] The collecting hopper 6 is welded from steel plates and is in a funnel shape with a wide top and a narrow bottom, and the steel plate in front of the collecting hopper is high and the steel plate behind the collecting hopper is low. The water outlet groups include a plurality of water outlets.

[0017] The cutting slag generated when the flame cutting machine cuts the ingot slides into the collecting bucket through the collecting guide plate under the action of gravity. In addition, the upper nozzle is used to flush the cutting slag stuck on the cutting roller to the mobile phone baffle, and the lower nozzle allows the large pieces of cutting slag on the collecting guide plate to slide more smoothly into the collecting bucket. The collecting bucket is funnel-shaped, and water outlet holes are respectively provided on the front and rear steel plates of the collecting bucket, which facilitates the separation of slag and water and the collection of cutting slag. Once the collecting bucket is full, it can be replaced during the production interval. The present application has a simple structure, and large pieces of cutting slag are collected in the collecting bucket, which avoids large pieces of cutting slag clogging the slag flushing groove and reduces the labor intensity of workers; the cutting slag on the cutting roller is flushed with slag flushing water sprayed by the upper nozzle, which avoids the cutting slag sticking to the cutting roller and improves the quality of the ingot.

[0018] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A slab continuous casting machine cutting slag collection device, characterized in that: It includes a collecting bucket, a cutting roller is provided above the collecting bucket, and the continuous casting billet is arranged on the cutting roller; a collecting guide plate is provided above the collecting bucket, and the bottom of the collecting guide plate is connected to the collecting bucket; a horizontally arranged slag flushing water pipe is provided between the collecting guide plate and the cutting roller, an upper nozzle group is provided on the top of the slag flushing water pipe, and the upper nozzle group sprays in the direction of the cutting roller; a lower nozzle group is provided at the bottom of the slag flushing water pipe, and the lower nozzle group sprays in the direction of the collecting guide plate; a plurality of water outlet holes are provided on the collecting bucket, and a slag flushing groove is provided below the collecting bucket.

2. The slab continuous casting machine cutting slag collection device according to claim 1, characterized in that: The collecting bucket is in the shape of a funnel that is wide at the top and narrow at the bottom, and the water outlets are arranged on the front plate and the rear plate of the collecting bucket.

3. The slab continuous casting machine cutting slag collection device according to claim 1, characterized in that: The upper nozzle group comprises a plurality of upper nozzles, and the plurality of upper nozzles are arranged at intervals along the length direction of the slag flushing water pipe.

4. The slab continuous casting machine cutting slag collecting device according to claim 3, characterized in that: The lower nozzle group comprises a plurality of lower nozzles, the plurality of lower nozzles are arranged at intervals along the length direction of the slag flushing water pipe, and the upper nozzles and the lower nozzles are arranged in a staggered manner.

5. The slab continuous casting machine cutting slag collecting device according to claim 1, characterized in that: The collecting guide plate is arranged to be inclined outward.

Images