CN112122347A

CN112122347A - Dust suppression and removal device for hot coil box

Info

Publication number: CN112122347A
Application number: CN201910557291.7A
Authority: CN
Inventors: 袁亚东; 吴索团
Original assignee: Shanghai Meishan Iron and Steel Co Ltd
Current assignee: Shanghai Meishan Iron and Steel Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-12-25
Anticipated expiration: 2039-06-25
Also published as: CN112122347B

Abstract

The invention relates to a dust suppression and removal device for a hot coil box, and belongs to the technical field of environment-friendly mechanical equipment. The invention comprises a frame of a hot rolling box, a bending roller assembly, a hydraulic system, an angle changing system and a low-pressure water system. The angle of the dedusting water can be automatically changed along with the increase of the steel coil, the influence of water mist on the temperature of the steel coil is avoided, the dedusting effect is guaranteed, the problem that oxide particles fly everywhere and pollute the environment when the hot coil box is used for coiling is solved, and the device is simple in structure and convenient to manufacture, install and maintain.

Description

Dust suppression and removal device for hot coil box

Technical Field

The invention relates to a dust suppression and removal device for a hot coil box, and belongs to the technical field of environment-friendly mechanical equipment.

Background

The hot coil box is used for coiling the roughly rolled straight blank into a cylindrical shape in the middle, and then reversely uncoiling the cylindrical blank to enter a finishing mill group. The intermediate billet is subjected to heat preservation in the hot coil box, and the head and tail directions of the intermediate billet are changed when the intermediate billet enters the finishing mill group, so that the difficult problem of hot strip steel rolling with large temperature difference between the head and the tail of the intermediate billet is solved; the hot coil box is provided with two stations (a coiling station and an uncoiling station) which can work simultaneously, so that the working efficiency of the hot coil box is improved. The hot coil box is at the coiling in-process, and under the effect of bending roll, the oxide on high temperature steel billet surface can peel off along coil of strip tangential direction in a large number, and a large amount of tiny iron oxide scales can upwards drift with both sides under the high temperature effect, and the final drift falls in the factory building, causes the scene all to be iron oxide scales everywhere, and the environment is abominable. The hot coil box has compact structure and various moving parts, the design and the installation position of the dust removal device are limited, and the temperature of the steel coil cannot be influenced, so that the hot coil box used at home and abroad at present does not adopt the dust removal device.

Disclosure of Invention

The invention provides a dust suppression and removal device for a hot coil box, which enables oxides floating everywhere in coiling work of the hot coil box to fall into a trench under the action of water.

In order to solve the technical problems, the invention adopts the technical scheme that: a dust suppression and dust removal device for a hot rolling box comprises a frame of the hot rolling box, a bending roller assembly, a hydraulic system, an angle change system and a low-pressure water system, wherein the bending roller assembly comprises a lower bending roller and two upper bending rollers, the lower bending roller is fixedly arranged on the frame, and the two upper bending rollers are distributed and arranged on the frame along the circumferential direction of the lower bending roller; the hydraulic system comprises a hydraulic control one-way valve, a servo reversing valve, an overflow valve and an oil cylinder which are sequentially connected, and further comprises a pressure sensor arranged between the overflow valve and the oil cylinder, a displacement sensor arranged on the oil cylinder, an electromagnetic reversing valve connected with the hydraulic control one-way valve and a one-way valve arranged between the hydraulic control one-way valve and the overflow valve; the angle change system comprises a collecting pipe, a bearing bush, a bearing block, a locking screw, a spring, a clamp, an adjusting screw and a nozzle; the low-pressure water system comprises a filter, clean circulating water and a control valve which are connected in sequence, and the low-pressure water system is connected with the collecting pipe.

The scheme is further improved in that: the blind end trunnion of hydro-cylinder is fixed, the rod cavity trunnion of hydro-cylinder is connected the frame, the frame revolutes the rotation of axes under the thrust of hydro-cylinder, the hydro-cylinder centers on the swing of blind end trunnion, the hydro-cylinder passes through hydraulic system control.

The scheme is further improved in that: the steel wire rope and the guide wheel are connected and pull the collecting pipe to rotate anticlockwise, and the spring presses the collecting pipe; the collecting pipe is installed on a memorial archway of the hot rolling box through the bearing seat, a bearing bush is designed between the collecting pipe and the bearing seat, the hoop is fixed on the collecting pipe through the locking screw, the adjusting screw is installed in a bolt hole in the side face of the bearing seat, the adjusting screw pushes the hoop to enable the collecting pipe to rotate circumferentially, one end of the spring pushes against a stress surface of the bearing seat, and the other end of the spring pushes against the hoop.

The scheme is further improved in that: the two upper bending rollers and the lower bending roller form an arc-shaped roller gap.

The scheme is further improved in that: the filter, net circulating water and control valve deliver pressurized water to the header.

The invention has the beneficial effects that: the angle of the dedusting water can be automatically changed along with the increase of the steel coil, the influence of water mist on the temperature of the steel coil is avoided, the dedusting effect is guaranteed, the problem that oxide particles fly everywhere and pollute the environment when the hot coil box is used for coiling is solved, and the device is simple in structure and convenient to manufacture, install and maintain.

Drawings

The invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a hydraulic system according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a header according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a bearing seat according to an embodiment of the present invention.

FIG. 5 is a schematic view of a header according to an embodiment of the present invention taken along line A-A.

The examples in the figure are: the device comprises a steel coil 1, an oil cylinder 2, a lower bending roller 3, a hoop 4, a guide wheel 5, an upper bending roller 6, a steel wire rope 7, a guide wheel 8, a header assembly 9, a frame 10 and a rotating shaft 11. 101. 103 pilot-controlled check valves, 102 servo reversing valves, 104 overflow valves, 105 pressure sensors, 106 displacement sensors, 108 check valves, 109 solenoid reversing valves, 201 headers, 202 bearing bushes, 203 bearing blocks, 204 set screws, 205 springs, 206 clamps and 207 adjusting screws.

Detailed Description

The following description of the embodiments with reference to the accompanying drawings will provide further detailed description of the embodiments of the present invention, such as the mutual positions and connection relationships between the related parts, the functions and working principles of the parts, and the operation and use methods, to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention.

Examples

As shown in figure 1, the water mist dust suppression device for the hot rolling box comprises a frame of the hot rolling box, a bending roller assembly, a hydraulic system, an angle change system and a low-pressure water system.

The bending roll assembly comprises a lower bending roll 3 and two upper bending rolls 6. The two upper bending rollers 6 are arranged on the frame 10, the lower bending roller 3 is fixed, and an arc-shaped roller gap is formed between the two upper bending rollers 6 and the lower bending roller 3; the blind end trunnion of the oil cylinder 2 is fixed, and the rod cavity trunnion is connected with the frame 10 through a pin shaft. The frame 10 moves in a certain range around the rotating shaft 11 under the thrust of the oil cylinder 2, and the body of the oil cylinder 2 swings around the blind-end trunnion.

As shown in fig. 2, the hydraulic system includes pilot-controlled

check valves

101 and 103, a servo directional valve 102, an overflow valve 104 and an oil cylinder 2 which are connected in sequence, and the hydraulic system further includes a pressure sensor 105 disposed between the overflow valve 104 and the oil cylinder 2, a displacement sensor 106 disposed on the oil cylinder 2, a solenoid directional valve 109 connected to the pilot-controlled check valve 101, and a check valve 108 disposed between the pilot-controlled check valve 103 and the overflow valve 104. The overflow valve 104 plays a role of safety protection under the condition of sudden change of pipeline pressure, the pressure sensor 105 and the displacement sensor 106 are responsible for feeding back the pressure and the position of two cavities of the oil cylinder to the background control host, and the one-way valve 108 plays a role of back pressure and oil supplement.

As shown in fig. 3, the angle change system includes: manifold 201, bearing bush 202, bearing seat 203, locking screw 204, spring 205, clamp 206, adjusting screw 207 and nozzle 208. The manifold 201 body is evenly distributed with a plurality of nozzles 208, the number of the nozzles depends on the fan-shaped angle of the water discharged from the nozzles and the whole width to be covered, and the water sprayed from the nozzles cannot collide with each other, so that the temperature of the steel coil is not influenced by the water falling from the collision. The water sprayed out from the nozzle 208 in the middle can catch the iron scale flying out of the outer circle side of the steel coil; the water sprayed from the nozzles 208 at the two sides can catch the iron scale on the end surfaces of the steel coil at the two sides. The collecting pipe 201 is arranged on a housing of the hot coiling box through a bearing block 203, and a bearing bush 202 is arranged between the collecting pipe and the housing; the clamp 206 is integrated with the header 201 through the action of the locking screw 204; the side of the bearing seat 203 is provided with a bolt hole for mounting an adjusting screw 207, the clamping hoop 206 is jacked through the adjusting screw 207, the collecting pipe 201 can rotate in the circumferential direction, and the water outlet angle of the nozzle on the collecting pipe 201 can be finely adjusted. One end of the spring 205 is pressed against the bearing surface of the bearing seat 203, and the other end is pressed against the clamp 206.

The use process of the device is as follows: the roughly rolled straight plate blank can be bent into a circular steel coil 1 under the action of the arc-shaped roll gap, when the outer diameter of the steel coil 1 is gradually increased, the coil YH1a of the electromagnetic directional valve 109 is electrified, the electromagnetic valve 109 is reversed, and the hydraulic control one-

way valves

101 and 103 are opened under pressure.

Meanwhile, a coil YH2b of the servo reversing valve 102 is electrified, pressure oil enters a blind cavity of the oil cylinder 2, and the oil cylinder slowly pushes the frame 10 and the upper bending roller 6 upwards to lift; the hoop 4 is arranged at the uppermost end of the outer ring of the cylinder barrel of the oil cylinder 2 and is connected with the collecting pipe 201 through a steel wire rope 7 and guide rails 5 and 8.

When the outer diameter of the steel coil 1 is gradually increased, when the oil cylinder 2 moves from the initial roll gap to the maximum roll gap, the hoop 4 moves along with the oil cylinder 2 in the horizontal direction, meanwhile, the traction header 201 rotates anticlockwise, the spring 205 is compressed, the angle of the nozzle is increased, and the sprayed water always acts on the periphery of the steel coil.

When the steel coil 1 is completely formed, the water valve of the low-pressure water system is automatically closed, no water is sprayed out of the collecting pipe 1, and the steel coil 1 is moved to the uncoiling position. At this time, the coil YH2a of the servo reversing valve 102 is electrified, pressure oil enters the rod cavity of the oil cylinder 2, so that the oil cylinder 2 retracts to drive the upper bending roller 6 to be pressed down to the initial roll gap position, the oil cylinder 2 drives the hoop 4 to return to the initial position, the steel wire rope 7 is loosened, at this time, under the action of the spring 205, the collecting pipe 201 automatically rotates clockwise, and returns to the initial angle position to wait for the next action.

The present invention is not limited to the above embodiments, and any technical solutions formed by equivalent substitutions fall within the scope of the present invention.

Claims

1. The utility model provides a hot coil box presses down dirt dust collector, includes the frame, bending roll assembly, hydraulic system, angle change system and the low pressure water system of hot coil box, its characterized in that: the bending roller assembly comprises a lower bending roller and two upper bending rollers, the lower bending roller is fixedly arranged on the frame, and the two upper bending rollers are distributed and arranged on the frame along the circumferential direction of the lower bending roller;

the hydraulic system comprises a hydraulic control one-way valve, a servo reversing valve, an overflow valve and an oil cylinder which are sequentially connected, and further comprises a pressure sensor arranged between the overflow valve and the oil cylinder, a displacement sensor arranged on the oil cylinder, an electromagnetic reversing valve connected with the hydraulic control one-way valve and a one-way valve arranged between the hydraulic control one-way valve and the overflow valve;

the angle change system comprises a collecting pipe, a bearing bush, a bearing block, a locking screw, a spring, a clamp, an adjusting screw and a nozzle;

the low-pressure water system comprises a filter, clean circulating water and a control valve which are connected in sequence, and the low-pressure water system is connected with the collecting pipe.

2. The dust suppression and removal device for the hot coil box according to claim 1, characterized in that: the blind end trunnion of hydro-cylinder is fixed, the rod cavity trunnion of hydro-cylinder is connected the frame, the frame revolutes the rotation of axes under the thrust of hydro-cylinder, the hydro-cylinder centers on the swing of blind end trunnion, the hydro-cylinder passes through hydraulic system control.

3. The dust suppression and removal device for the hot coil box according to claim 1, characterized in that: the steel wire rope and the guide wheel are connected and pull the collecting pipe to rotate anticlockwise, and the spring presses the collecting pipe; the collecting pipe is installed on a memorial archway of the hot rolling box through the bearing seat, a bearing bush is designed between the collecting pipe and the bearing seat, the hoop is fixed on the collecting pipe through the locking screw, the adjusting screw is installed in a bolt hole in the side face of the bearing seat, the adjusting screw pushes the hoop to enable the collecting pipe to rotate circumferentially, one end of the spring pushes against a stress surface of the bearing seat, and the other end of the spring pushes against the hoop.

4. The dust suppression and removal device for the hot coil box according to claim 1, characterized in that: the two upper bending rollers and the lower bending roller form an arc-shaped roller gap.

5. The dust suppression and removal device for the hot coil box according to claim 1, characterized in that: the filter, net circulating water and control valve deliver pressurized water to the header.