Free roll at fan-shaped section part of continuous casting machine

Abstract

The utility model discloses a free roll at a fan-shaped section part of a continuous casting machine, which comprises two bearing seats, and a fixed seat is arranged on the inner side of each bearing seat; the roller body comprises a mandrel and a roller sleeve; a water inlet channel and a water outlet channel are arranged at the two ends of the mandrel respectively, water distribution channels are arranged at the inner side ends of the water inlet channel and the water outlet channel, and a plurality of cooling channels distributed in a central symmetry mode are arranged on the periphery of the mandrel. The two water collecting trays are arranged at the two ends of the roller body respectively, and the water collecting trays are communicated with the corresponding water distribution channels and the cooling channels respectively; the two rotary joints are respectively communicated with the water inlet channel and the water outlet channel; the slag scraping mechanism is mounted on the fixed seat and is used for cleaning the surface of the roller body; the device comprises a bottom plate, a slag scraping plate and a purging pipe, and the secondary slag removal mechanism comprises a slag removal roller which is rotatably mounted on the bearing seat, and the slag removal roller is in transmission connection with the roller body. The design can effectively reduce the condition that slag adheres to the surface of the free roller.

Description

TECHNICAL FIELD

[0001] The utility model relates to the free roller field, especially a free roller of continuous casting machine sector position. BACKGROUND

[0002] The continuous casting machine sector is the core component of the continuous casting machine. It is located behind the crystallizer, and the main function is to support, guide and cool the casting blank with liquid core from the crystallizer. Its structure contains multiple free rollers, which are arranged in an arc shape and adapt to the solidification shrinkage shape of the casting blank, which can effectively prevent the casting blank from deforming due to its own weight and internal molten steel static pressure, such as bulging and other defects. In terms of cooling, the sector can circulate the cooling water through the internal cooling waterway, remove the heat released during the solidification process of the casting blank, and promote the gradual solidification of the casting blank. In addition, it can accurately control the running track of the casting blank and ensure the stable and efficient continuous casting process, which is very important to improve the quality of the casting blank and the efficiency of the continuous casting production.

[0003] The sector free roller in the prior art is prone to "slag sticking" during use, that is, the mixture of casting blank protective slag and slab scale is easy to stick to the surface of the free roller. During the rotation of the free roller, the "slag sticking" will cause pressure pits on the surface of the slab, which seriously affects the surface quality of the slab. The main reason is that the temperature of the surface of the free roller is relatively high during use. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a continuous casting machine sector free roller which can effectively reduce the slag sticking on the surface of the free roller.

[0005] The purpose of the present utility model is achieved as follows: a free roller of a continuous casting machine fan-shaped section, comprising a bearing seat, there are two bearing seats, the inner side of each bearing seat is provided with a fixed seat; a roller body, the roller body is rotatably mounted on the bearing seat, which includes a core shaft, and also includes a roller sleeve arranged on the outer periphery of the core shaft; both ends of the core shaft are provided with a water inlet channel and a water outlet channel, the inner ends of the water inlet channel and the water outlet channel are provided with a water diversion channel, and the outer periphery of the core shaft is provided with a plurality of cooling channels distributed symmetrically with respect to the center; a water collecting tray, there are two water collecting trays, which are respectively arranged at both ends of the roller body, and the water collecting trays are respectively connected to the corresponding water diversion channels, The roller body is connected with the cooling channel; there are two rotary joints, which are respectively connected with the water inlet channel and the water outlet channel; the scraping mechanism is located below the roller body and is installed on the fixed seat for cleaning the roller surface; it includes a base plate, a scraping plate installed on the base plate, and a purge pipe installed on the base plate and located on the inner side of the scraping plate, and the purge pipe is provided with a plurality of blowing heads facing the scraping end of the scraping plate; the secondary slag cleaning mechanism is also located below the roller body for further cleaning the roller surface; it includes a slag cleaning roller rotatably installed on the bearing seat, and the slag cleaning roller is transmission-connected to the roller body.

[0006] Compared with the prior art, the beneficial effects of the present invention are: the free roller provided by the present invention can effectively reduce the situation of slag sticking on the surface of the free roller; specifically, the cooling water channel is located on the outer periphery of the core shaft, closer to the surface of the roller body, and can quickly cool the high temperature on the surface of the roller body, thereby reducing the occurrence of slag sticking; on the one hand, a scraping mechanism is added to clean up larger slag sticking on the surface of the roller body in time; on the other hand, a blowing pipe is added behind the scraping plate, which can also quickly blow down the surface of the roller body to cool it down; in addition, a slag cleaning roller is added, which is in direct contact with the surface of the roller body, and can more thoroughly clean up the slag sticking on the surface of the roller body.

[0007] Furthermore, a driving disk is provided on the outer side of the water collecting disk, and a transmission disk is provided at each end of the slag cleaning roller, and the driving disk is connected to the corresponding transmission disk through a belt. This design has a simple structure and good transmission effect.

[0008] Furthermore, a flange is provided at the bottom of the water collecting pan, which is detachably fixed to the roller sleeve; and sealing rings are provided on the mating surfaces of the water collecting pan, the roller sleeve, and the core shaft. This design has a simple structure and good sealing effect.

[0009] Furthermore, both ends of the base plate are provided with fixing holes, each of which is provided with fixing bolts. The base plate is detachably mounted on the fixing base via the fixing bolts and the fixing holes. The fixing holes are elongated. This design facilitates adjustment of the distance between the upper end of the scraping plate and the roller surface, thereby controlling the scraping effect.

[0010] Further, the slag scraping mechanism further comprises a plurality of reinforcing ribs, one end of the reinforcing ribs is connected to the back of the slag scraping plate, and the other end is connected to the bottom plate. The design further improves the structural strength of the slag scraping plate. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a structural schematic diagram of the utility model along Figure 1 It is a sectional structural schematic diagram along A-A line.

[0013] Figure 3 It is a structural schematic diagram of the utility model. Figure 1 It is a local enlarged schematic diagram of B.

[0014] Figure 4 It is a top view structural schematic diagram of the slag scraping mechanism of the utility model.

[0015] Wherein, 1 bearing seat, 1a fixed seat, 2 shaft, 2a water inlet channel, 2b water outlet channel, 2c water distribution channel, 2d cooling channel, 3 roller cover, 4 water distribution disc, 4a driving disc, 4b flange disc, 5 rotary joint, 6 bottom plate, 6a fixed hole, 6b fixed bolt, 7 slag scraping plate, 8 purge pipe, 8a blow head. 9 reinforcing rib, 10 slag cleaning roller, 11 transmission disc. DETAILED DESCRIPTION

[0016] The above and other technical features and advantages of the utility model will be described in more detail below in combination with the drawings.

[0017] The above and other technical features and advantages of the utility model will be described in more detail below in combination with the drawings. Figures 1-4As shown, a free roller of a segment of a continuous casting machine comprises two bearing seats 1, each of which is provided with a fixed seat 1a on the inner side; a roller body rotatably mounted on the bearing seat 1, which comprises a mandrel 2 and a roller sleeve 3 sleeved on the outer periphery of the mandrel 2; the two ends of the mandrel 2 are respectively provided with an inlet water channel 2a and an outlet water channel 2b, the inner side ends of the inlet water channel 2a and the outlet water channel 2b are respectively provided with a water distribution channel 2c, and the outer periphery of the mandrel 2 is provided with a plurality of cooling channels 2d which are centrally symmetrically distributed; two water collecting pans 4 are respectively arranged at the two ends of the roller body, and the water collecting pans 4 are respectively connected with the corresponding water distribution channels 2c and cooling channels 2d; two rotary joints 5 are respectively connected with the inlet water channel 2a and the outlet water channel 2b; a slag scraping mechanism is arranged below the roller body and mounted on the fixed seat 1a, which is used for cleaning the surface of the roller body and comprises a bottom plate 6, a slag scraping plate 7 mounted on the bottom plate 6, and a blowing pipe 8 mounted on the bottom plate 6 and located on the inner side of the slag scraping plate 7, wherein the blowing pipe 8 is provided with a plurality of blowing heads 8a which are opposite to the slag scraping end of the slag scraping plate 7; a secondary slag cleaning mechanism is also arranged below the roller body and is used for further cleaning the surface of the roller body, which comprises a slag cleaning roller 10 rotatably mounted on the bearing seat 1, and the slag cleaning roller 10 is in transmission connection with the roller body.

[0018] It should be noted that the blowing pipe 8 needs to be communicated with an external high-pressure gas source.

[0019] The outer side of the water collecting pan 4 is provided with a driving disc 4a, and the two ends of the slag cleaning roller 10 are respectively provided with a transmission disc 11, and the driving disc 4a is in belt transmission connection with the corresponding transmission disc 11.

[0020] It should be noted that the transmission connection between the slag cleaning roller 10 and the roller body can also be chain transmission or gear transmission; with the rotation of the roller body, the slag cleaning roller 10 rotates to clean the small slag on the surface of the roller body.

[0021] The bottom of the water collecting pan 4 is provided with a flange plate 4b which is detachably fixed on the roller sleeve 3, and the water collecting pan 4, the roller sleeve 3 and the mandrel 2 are all provided with sealing rings on the matching surfaces.

[0022] The two ends of the bottom plate 6 are provided with fixed holes 6a, and the fixed holes 6a are provided with fixed bolts 6b, and the bottom plate 6 is detachably mounted on the fixed seat 1a through the fixed bolts 6b and the fixed holes 6a; the fixed holes 6a are long holes.

[0023] The slag scraping mechanism further comprises a plurality of reinforcing ribs 9, one end of each of the reinforcing ribs 9 is connected with the back surface of the slag scraping plate 7, and the other end is connected with the bottom plate 6.

[0024] In use, the cooling water enters the rotary joint 5, flows into the water inlet channel 2a, then flows into the water collecting disc 4 through the water distribution channel 2c, then enters the cooling channel 2d to absorb the heat in the roller body, then flows into the water collecting disc 4 at the other end, then flows into the water outlet channel 2b through the water distribution channel 2c, and finally flows out from the other rotary joint 5.

[0025] With the rotation of the roller body, the large sticky residue on the surface of the roller body is continuously scraped off by the residue scraping plate 7; during this period, the blowing pipe 8 continuously blows out cooling air from the blowing head 8a, which reduces the temperature of the roller body surface and also reduces the temperature of the sticky residue, thereby accelerating the solidification of the sticky residue and facilitating residue scraping.

[0026] The utility model is not limited to the above embodiment, on the basis of the technical scheme disclosed by the utility model, the skilled in the art can make some replacement and deformation to some technical features in the disclosed technical content without creative labor, and these replacement and deformation are all within the protection scope of the utility model.

Claims

1. A free roller in a sector of a continuous casting machine, characterized in that: The free roller includes Bearing seats (1), there are two bearing seats (1), and each bearing seat (1) is provided with a fixing seat (1a) on its inner side; A roller body, the roller body being rotatably mounted on a bearing seat (1), comprising a core shaft (2) and a roller sleeve (3) sleeved on the outer periphery of the core shaft (2); a water inlet channel (2a) and a water outlet channel (2b) are respectively provided at both ends of the core shaft (2); a water distribution channel (2c) is provided at the inner ends of the water inlet channel (2a) and the water outlet channel (2b); and a plurality of cooling channels (2d) distributed symmetrically around the center are provided on the outer periphery of the core shaft (2); Water collecting trays (4), there are two water collecting trays (4), which are respectively arranged at both ends of the roller body, and the water collecting trays (4) are respectively connected to the corresponding water diversion channels (2c) and cooling channels (2d); There are two rotary joints (5), which are respectively connected to the water inlet channel (2a) and the water outlet channel (2b); A scraping mechanism, the scraping mechanism is located below the roller body and is mounted on a fixed seat (1a), and is used to clean the surface of the roller body; the scraping mechanism includes a bottom plate (6), a scraping plate (7) mounted on the bottom plate (6), and a purge pipe (8) mounted on the bottom plate (6) and located inside the scraping plate (7); the purge pipe (8) is provided with a plurality of blowing heads (8a) facing the scraping end of the scraping plate (7); A secondary slag cleaning mechanism is also located below the roller body and is used to further clean the surface of the roller body; it comprises a slag cleaning roller (10) rotatably mounted on a bearing seat (1), and the slag cleaning roller (10) is drivingly connected to the roller body.

2. The free roller of a continuous casting machine segment according to claim 1, characterized in that: A driving disk (4a) is provided on the outside of the water collecting disk (4), and a transmission disk (11) is provided at each end of the slag cleaning roller (10). The driving disk (4a) is connected to the corresponding transmission disk (11) through a belt transmission.

3. The free roller of a continuous casting machine segment according to claim 1 or 2, characterized in that: A flange (4b) is provided at the bottom of the water collecting tray (4), and the flange (4b) is detachably fixed to the roller sleeve (3); and sealing rings are provided on the mating surfaces of the water collecting tray (4), the roller sleeve (3) and the core shaft (2).

4. The free roller of a continuous casting machine segment according to claim 1 or 2, characterized in that: Both ends of the base plate (6) are provided with fixing holes (6a), and the fixing holes (6a) are provided with fixing bolts (6b). The base plate (6) is detachably mounted on the fixing seat (1a) via the fixing bolts (6b) and the fixing holes (6a); the fixing holes (6a) are elongated holes.

5. The free roller of a continuous casting machine segment according to claim 1 or 2, characterized in that: The scraping mechanism further comprises a plurality of reinforcing ribs (9), one end of each reinforcing rib (9) being connected to the back of the scraping plate (7) and the other end being connected to the bottom plate (6).

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