CN217342860U

CN217342860U - Steel rolling steel billet cinder clearing device

Info

Publication number: CN217342860U
Application number: CN202220370236.4U
Authority: CN
Inventors: 张铁
Original assignee: Jilin Xinda Iron and Steel Co Ltd
Current assignee: Jilin Xinda Iron and Steel Co Ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-09-02
Anticipated expiration: 2032-02-23

Abstract

The utility model provides a steel rolling billet oxide skin clearing device, which comprises a grinding and brushing mechanism, wherein the grinding and brushing mechanism comprises a frame, and a left rolling brush, a right rolling brush, an upper rolling brush and a lower rolling brush which are respectively abutted against four sides of a billet and rotate along with the advancing of the billet are arranged on the frame; the upstream of the grinding and brushing mechanism is also provided with a front blowing mechanism for cleaning impurities on the surface of the steel billet, and the downstream of the grinding and brushing mechanism is also provided with a rear blowing mechanism for cleaning residual oxidized skin. The utility model discloses a mechanical scrubbing brush of scrubbing brush mechanism and preceding sweeping mechanism and back sweep twice of sweeping the mechanism, effectively clear away the cinder on steel billet surface, ensure rolling steel steady quality, stopped to impress the surface quality defect who causes because of the iron scale.

Description

Steel rolling steel billet cinder clearing device

Technical Field

The utility model relates to a steel rolling technical field, in particular to steel rolling steel billet cinder clearing device.

Background

Generally, the billet is heated and soaked in a heating furnace in an oxidizing atmosphere before rolling, so that the billet has better plasticity and ductility. The temperature in the heating furnace is generally above 1000 ℃, the heating time is generally 2-3 hours or even longer, and the oxygen-containing environment at high temperature is long, so that the surface of the billet steel reacts with oxygen in the furnace at high temperature to generate a large amount of oxide skin. After the billet is pushed out of the heating furnace, the oxide scale is more firmly attached to the billet body along with the reduction of the temperature of the billet, and the oxide scale is difficult to fall off without external force. The oxide skin can be pressed into the surface of the steel in the rolling process to form an oxide skin pressing defect, the oxide skin pressing defect can be repaired or repaired by grinding without serious defect, but certain production cost is increased, the external appearance of the product is influenced, the product is seriously and directly scrapped, and serious economic loss is caused to enterprises; meanwhile, the iron scale covered on the surface of the steel billet can influence the heat transfer condition, cause uneven heating temperature of the steel billet, influence the stability of the rolling process and cause the fluctuation of the quality of steel products.

At present, some enterprises adopt a scraper to clean oxide skin; however, the combination of the oxide skin and the steel billet is firm, and the oxide skin cannot be thoroughly cleaned. The residual scale is continuously pressed into the steel billet directly under the pressure of rough and fine rolling along with the steel billet, thereby influencing the surface quality and the product quality of the steel billet.

Therefore, how to effectively clean the scale of the billet to improve the rolling quality of the steel becomes a problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that prior art exists, the utility model aims to provide a steel rolling steel billet cinder clearing device who clears away effectual, clear away efficient, and clean environmental protection.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a steel rolling billet oxide skin removing device comprises a grinding and brushing mechanism, wherein the grinding and brushing mechanism comprises a rack, and a left rolling brush, a right rolling brush, an upper rolling brush and a lower rolling brush which are respectively abutted against four side surfaces of a billet and can rotate to grind and brush the side surfaces of the billet along with the advancing of the billet are arranged on the rack; the upstream of the grinding and brushing mechanism is also provided with a front blowing frame for cleaning impurities on the surface of the steel billet, and the downstream of the grinding and brushing mechanism is also provided with a rear blowing frame for cleaning residual oxide skin.

The utility model discloses a further improvement lies in: the frame is a rectangular frame consisting of a top plate, a bottom plate and two stand columns, and the two stand columns are vertically arranged on two sides of the steel billet in a straddling mode.

The utility model discloses a further improvement lies in: two vertical rollers are arranged between the top plate and the bottom plate of the rack, the upper ends of the vertical rollers are rotatably connected with the top plate of the rack through bearings, and the lower ends of the vertical rollers are rotatably connected with the bottom plate of the rack through bearings; the left rolling brush and the right rolling brush are respectively sleeved outside a vertical rolling shaft and can rotate along with the rotation of the vertical rolling shaft.

The utility model discloses a further improvement lies in: the front ends of two upright posts of the frame are symmetrically provided with a group of high-position bearing seats and a group of low-position bearing seats, wherein high-position rolling shafts are assembled in the high-position bearing seats, and low-position rolling shafts are assembled in the low-position bearing seats; the outer part of the high-position rolling shaft is sleeved with an upper rolling brush, and the outer part of the low-position rolling shaft is sleeved with a lower rolling brush corresponding to the upper rolling brush.

The utility model discloses a further improvement lies in: the steel rolling billet oxide skin removing device further comprises a driving assembly for ensuring synchronous rotation of the upper rolling brush, the lower rolling brush, the left rolling brush and the right rolling brush.

The utility model discloses a further improvement lies in: the driving assembly comprises a group of speed reducers arranged above the rack, and power output ends of the speed reducers are respectively in transmission connection with the vertical rolling shafts positioned below the same side of the speed reducers; and the power input end of the speed reducer is in transmission connection with the blank conveying roller, the high-position rolling shaft and the low-position rolling shaft respectively.

The utility model discloses a further improvement lies in: the power input end of the speed reducer and the two ends of the high-position rolling shaft are respectively provided with a double-row chain wheel, and the two ends of the low-position rolling shaft are respectively provided with a tail end chain wheel; and a first chain wheel at the power input end of the speed reducer is in transmission connection with a driving chain wheel arranged at the outer end of the blank conveying roller through a first chain, a second chain wheel at the power input end of the speed reducer is in transmission connection with a first chain wheel of the high-position roller through a second chain, and a second chain wheel of the high-position roller is in transmission connection with a tail end chain wheel of the low-position roller through a third chain.

The utility model discloses a further improvement lies in: the first sprocket number of teeth of speed reducer power input end is less than the second sprocket number of teeth, the first sprocket at high-order roller bearing both ends, second sprocket number of teeth are the same.

The utility model discloses a further improvement lies in: the front purging frame and the rear purging frame both comprise door-shaped frames, one side, close to the steel billets, of each door-shaped frame is provided with a plurality of nozzles pointing to the steel billets, and the inlet ends of the door-shaped frames are communicated with the high-pressure nitrogen conveying pipeline.

The utility model discloses a further improvement lies in: the blowing direction of the nozzle is opposite to the advancing direction of the billet.

Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:

the utility model provides a steel rolling steel billet cinder clearing device sweeps twice of sweeping mechanism and back through the mechanical scrubbing brush of scrubbing brush mechanism and preceding sweeping mechanism and sweeping, effectively clears away the cinder on steel billet surface, ensures rolling steel steady quality, has stopped to impress the surface quality defect who causes because of the iron scale.

The utility model discloses a quadriversal metal round brush carries out mechanical scrubbing to four terminal surfaces of steel billet to through drive assembly will send the rotatory power transmission of base roller to the metal round brush on, make on round brush, left round brush, the synchronous fast rotation of right round brush down, evenly grind the brush steel billet terminal surface effectively. The utility model discloses need not drive power supply, need not energy resource consumption, green.

The utility model is also provided with a front blowing frame and a rear blowing frame, the front blowing frame can blow off floating oxide skin, and the contact area and the grinding effect of the metal rolling brush and the oxide skin are ensured; the scale cinder that does not thoroughly drop can further be clear away through the shearing force to back jetting frame, guarantees that the billet surface that gets into the rolling mill does not have the scale cinder, and then guarantees rolling product quality.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a schematic diagram of the right side view of fig. 2, in which the chain is not shown.

In the figure, 1, a frame, 2, a left rolling brush, 3, a right rolling brush, 4, an upper rolling brush, 5, a lower rolling brush, 6, a vertical roller, 7, a high-position bearing seat, 8, a low-position bearing seat, 11, a speed reducer, 12, a first chain, 13, a second chain, 14, a third chain, 15, a blank conveying roller, 16, a front blowing frame, 17, a rear blowing frame, 18, a frame, 19, a nozzle, 20, a billet, 21, a driving chain wheel, 22 and a tail end chain wheel.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

A steel rolling billet scale removing device comprises a front blowing frame 16, a grinding and brushing mechanism and a rear blowing frame 17 which are sequentially arranged along the running direction of a billet 20 as shown in figures 1-3. The front blowing frame 16 is used for blowing off impurities and loose oxide skin attached to the surface of the billet 20 and pre-cleaning a rear grinding brush; the grinding and brushing mechanism grinds and brushes four side surfaces of the billet 20 through metal rolling brushes and grinds and loosens oxide skin which is firmly attached; and the rear blowing frame 17 is used for blowing and removing the polished oxide skin, and the clean blank is sent into a rolling mill along with the blank sending roller 15 for rolling.

The grinding and brushing mechanism comprises a rack 1, wherein the rack 1 is a rectangular frame consisting of a top plate, a bottom plate and two stand columns, and the two stand columns are vertically arranged on two sides of the steel billet 20 in a straddling mode. The rolling brush type billet steel cleaning machine is characterized in that a left rolling brush 2, a right rolling brush 3, an upper rolling brush 4 and a lower rolling brush 5 are mounted on the machine frame 1, the left rolling brush 2, the right rolling brush 3, the upper rolling brush 4 and the lower rolling brush 5 are respectively abutted against four side faces of a billet 20, and the side faces of the billet 20 are rotationally brushed along with the advancing of the billet 20, so that oxide scales on the surface of the billet 20 fall off.

As shown in fig. 1 to 3, the left rolling brush 2 and the right rolling brush 3 are correspondingly arranged in one group and are installed in the frame of the machine frame 1; the upper rolling brush 4 and the lower rolling brush 5 are correspondingly arranged in one group and are arranged at the front end of the rack 1.

Specifically, two vertical rollers 6 are arranged between a top plate and a bottom plate of the frame 1, and the left rolling brush 2 and the right rolling brush 3 are respectively sleeved outside one vertical roller 6 and can rotate along with the rotation of the vertical roller 6. The upper end of the vertical roller 6 is rotatably connected with the top plate of the frame 1 through a bearing, the lower end of the vertical roller 6 is rotatably connected with the bottom plate of the frame 1 through a bearing, so that the left rolling brush 2 and the right rolling brush 3 can be driven by the vertical roller 6 to flexibly rotate, and the left end face and the right end face of the steel billet 20 are polished and cleaned.

The front ends of two upright posts of the frame 1 are symmetrically provided with a group of high-position bearing seats 7 and a group of low-position bearing seats 8, wherein high-position rolling shafts are arranged in the high-position bearing seats 7, and low-position rolling shafts are arranged in the low-position bearing seats 8. An upper rolling brush 4 is sleeved outside the high-position rolling shaft, and a lower rolling brush 5 is sleeved outside the low-position rolling shaft; the upper rolling brush 4 and the lower rolling brush 5 rotate along with the advancement of the billet 20, and the upper end surface and the lower end surface of the billet 20 are polished and cleaned.

The surfaces of the left rolling brush 2, the right rolling brush 3, the upper rolling brush 4 and the lower rolling brush 5 are provided with uneven grinding brush working surfaces so as to carry out grinding and cleaning on the end surface of the steel billet 20. The rolling brushes are all metal rolling brushes and have better strength, hardness and heat resistance.

Although the rotating grinding brushes of the left rolling brush 2, the right rolling brush 3, the upper rolling brush 4 and the lower rolling brush 5 can be realized by means of the friction force between the steel billet 20 and the rolling brushes, in order to ensure the stability and the uniformity of the grinding effect, the steel billet 20 scale removing device is also provided with a driving assembly for ensuring the synchronous rotation of the four rolling brushes.

The driving assembly comprises a group of speed reducers 11 arranged above the rack 1, the power input ends of the speed reducers 11 are provided with double-row chain wheels, and the power output ends of the speed reducers 11 are in transmission connection with the vertical rolling shafts 6 positioned below the same side of the speed reducers 11; meanwhile, two ends of the blank conveying roller 15 are respectively provided with a driving chain wheel 21, two ends of the high-position roller are respectively provided with double-row chain wheels, and two ends of the low-position roller are respectively provided with a tail chain wheel 22. The driving chain wheel 21 of the blank sending roller 15 is in transmission connection with the first chain wheel of the speed reducer 11 through the first chain 12, the second chain wheel of the speed reducer 11 is in transmission connection with the first chain wheel of the high-position roller through the second chain 13, and the second chain wheel of the high-position roller is in transmission connection with the tail end chain wheel 22 of the low-position roller through the third chain 14.

The driving force from the blank feeding roller 15 is transmitted to the speed reducer 11, and is transmitted to the vertical roller 6 through the power output end through the speed change of the internal mechanism of the speed reducer 11; the speed reducer 11 input, through the tooth number difference of first sprocket with the second sprocket, realize the acceleration rate transmission, give high-order roller bearing, low level roller bearing with rotary power transmission. The number of teeth of a first chain wheel at the power input end of the speed reducer 11 is smaller than that of teeth of a second chain wheel, and the speed reducer belongs to variable speed transmission; the first chain wheel and the second chain wheel at two ends of the high-position rolling shaft have the same tooth number and belong to constant-speed transmission. Through controlling the gear ratio of the speed reducer 11 and the gear ratio of the first chain wheel and the second chain wheel, the left rolling brush 2, the right rolling brush 3, the upper rolling brush 4 and the lower rolling brush 5 synchronously rotate, the rotating speed is higher than that of the billet conveying roller 15, the end face of the billet 20 is quickly polished, and surface oxide skin is effectively cleaned.

The speed ratio of the first chain wheel and the second chain wheel at the input end of the speed reducer 11 is 14: 23, belonging to speed-increasing transmission; in the actual production process, a proper transmission ratio can be determined according to the thickness of oxide scale on the surface of the steel billet 20, the surface roughness of the rolling brush and the like, so that the rotating speed of the rolling brush is adjusted, and the oxide scale is thoroughly polished and removed.

The front blowing frame 16 and the rear blowing frame 17 both comprise a door-shaped frame 18, and one side of the door-shaped frame 18, which is close to the billet 20, is provided with a plurality of nozzles 19 pointing to the billet 20. The frame body of the door-shaped frame 18 is formed by connecting pipe fittings, and the inlet end of the door-shaped frame 18 is communicated with a high-pressure nitrogen conveying pipeline; the high-pressure nitrogen is sprayed out from the nozzle 19 through the portal frame 18 to clean and remove impurities on the surface of the billet 20.

In order to ensure that the lower end surface of the billet 20 is sufficiently purged, the blowing direction of the nozzle 19 located below the lower end surface of the billet 20 is inclined upward.

In order to ensure that scale impurities on the surface of the billet 20 do not enter the rolling mill, the spraying direction of the nozzle 19 is opposite to the advancing direction of the billet 20, and the high-pressure nitrogen reversely shovels and removes loose scale of the grinding brush and makes the loose scale fall between the grinding brush mechanism and the rear blowing frame 17, so that the surface of the billet 20 passing through the removing device is ensured to be clean.

Preferably, the blowing direction of the nozzle 19 and the traveling direction of the billet 20 form an acute angle of 15 ° to 45 °.

In the actual use process, a plurality of groups of scale removing devices can be arranged along the advancing direction of the steel billet according to the firmness of the scale on the surface of the steel billet, so as to ensure that the surface of the steel billet entering the rolling mill has no scale.

The utility model discloses a working process does:

when the pusher pushes the red billet from the heating furnace to the billet conveying roller way, the motor reducer drives the billet conveying roller to drive the red billet to move towards the roughing mill. When the red blank moving forwards passes through the oxide skin removing device, loose oxide skin on the surface of the red blank is removed in advance through nitrogen purging of the front purging mechanism, and then the red blank enters the grinding and brushing mechanism. In the grinding and brushing mechanism, the blank conveying roller synchronously transmits the rotary power to the upper rolling brush, the lower rolling brush, the left rolling brush and the right rolling brush through a chain wheel and chain mechanism and a speed reducer; through the quick rotation of metal round brush and polish, clear away the cinder brush polish on red base surface, the cinder separates with red base. Blowing the ground and brushed red blank by the shearing force of high-pressure nitrogen to remove a little residual oxide skin which is not thoroughly separated; and (5) feeding the clean red blank into a roughing mill for rolling.

The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides a steel rolling steel billet cinder clearing device which characterized in that: the steel billet grinding and brushing device comprises a grinding and brushing mechanism, wherein the grinding and brushing mechanism comprises a rack (1), and a left rolling brush (2), a right rolling brush (3), an upper rolling brush (4) and a lower rolling brush (5) which are respectively abutted against four side surfaces of a steel billet (20) and rotate to grind and brush the side surfaces of the steel billet (20) along with the advancing of the steel billet (20) are arranged on the rack (1); the upstream of the grinding and brushing mechanism is also provided with a front blowing frame (16) for cleaning impurities on the surface of the steel billet (20), and the downstream of the grinding and brushing mechanism is also provided with a rear blowing frame (17) for cleaning residual oxidized skin.

2. The steel rolling billet scale removing device according to claim 1, wherein: the frame (1) is a rectangular frame consisting of a top plate, a bottom plate and two upright posts, and the two upright posts are vertically arranged on two sides of the billet (20) in a straddling manner.

3. The steel rolling billet scale removing device according to claim 2, wherein: two vertical rollers (6) are arranged between a top plate and a bottom plate of the rack (1), the upper ends of the vertical rollers (6) are rotatably connected with the top plate of the rack (1) through bearings, and the lower ends of the vertical rollers (6) are rotatably connected with the bottom plate of the rack (1) through bearings; the left rolling brush (2) and the right rolling brush (3) are respectively sleeved outside a vertical rolling shaft (6) and can rotate along with the rotation of the vertical rolling shaft (6).

4. The apparatus of claim 3, wherein the apparatus comprises: the front ends of two upright posts of the frame (1) are symmetrically provided with a group of high-position bearing seats (7) and a group of low-position bearing seats (8), wherein high-position rolling shafts are arranged in the high-position bearing seats (7), and low-position rolling shafts are arranged in the low-position bearing seats (8); the outer part of the high-position rolling shaft is sleeved with an upper rolling brush (4), and the outer part of the low-position rolling shaft is sleeved with a lower rolling brush (5) corresponding to the upper rolling brush (4).

5. The apparatus of claim 4, wherein the apparatus comprises: the steel rolling billet (20) oxide skin removing device further comprises a driving assembly for ensuring synchronous rotation of the upper rolling brush (4), the lower rolling brush (5), the left rolling brush (2) and the right rolling brush (3).

6. The steel rolling billet scale removing device according to claim 5, wherein: the driving assembly comprises a group of speed reducers (11) arranged above the rack (1), and the power output ends of the speed reducers (11) are respectively in transmission connection with the vertical rollers (6) positioned below the same side of the speed reducers; and the power input end of the speed reducer (11) is in transmission connection with the blank conveying roller (15), the high-position rolling shaft and the low-position rolling shaft respectively.

7. The steel rolling billet scale removing device according to claim 6, wherein: the power input end of the speed reducer (11) and two ends of the high-position rolling shaft are respectively provided with a double-row chain wheel, and two ends of the low-position rolling shaft are respectively provided with a tail end chain wheel (22); the first chain wheel of the power input end of the speed reducer (11) is in transmission connection with a driving chain wheel (21) arranged at the outer end of the blank conveying roller (15) through a first chain (12), the second chain wheel of the power input end of the speed reducer (11) is in transmission connection with the first chain wheel of the high-position roller through a second chain (13), and the second chain wheel of the high-position roller is in transmission connection with the tail end chain wheel (22) of the low-position roller through a third chain (14).

8. The apparatus for removing scale from a steel rolling billet as set forth in claim 7, wherein: the first sprocket tooth number of speed reducer (11) power input end is less than the second sprocket tooth number, the first sprocket at high-order roller bearing both ends, second sprocket tooth number are the same.

9. The steel rolling billet scale removing device according to claim 1, wherein: the front blowing frame (16) and the rear blowing frame (17) both comprise door-shaped frames (18), one side, close to the steel billets (20), of each door-shaped frame (18) is provided with a plurality of nozzles (19) pointing to the steel billets (20), and the inlet ends of the door-shaped frames (18) are communicated with a high-pressure nitrogen conveying pipeline.

10. The apparatus of claim 9, wherein: the blowing direction of the nozzle (19) is opposite to the advancing direction of the billet (20).