KR100954870B1 - Cleaning apparatus of drum mixer for sintering - Google Patents

Abstract

In the washing apparatus of the sintering drum mixer of the present invention, in the washing apparatus of the sintering drum mixer to remove the adhered light attached to the inner surface of the drum mixer for preparing the sintering blending raw material with the washing water in the iron ore sintering process, the washing water is A storage tank stored; First and second pump parts for pumping the washing water in the water storage tank; A first water pipe through which the washing water pumped by the first pump unit is transferred; A second water pipe through which the washing water pumped by the second pump part is transferred; One side is connected to the first water pipe is introduced into the drum mix in the longitudinal direction of the drum mix, the outer surface is provided with a plurality of injection nozzles for spraying the washing water transported by the first water pipe, A first spray pipe having the injection nozzle installed on an outer surface of the drum mix to face the first zone in a longitudinal direction; One side is connected to the second water pipe and is introduced into the drum mix in parallel with the first spray pipe, and faces the second zone so as to wash the second zone partitioning the inner surface of the drum mix in the longitudinal direction. It comprises a second injection pipe is installed on the outer surface of the injection nozzle.

According to the present invention, since the inner surface of the drum mixer can be washed at a time by introducing a plurality of injection tubes having a plurality of injection nozzles inside the drum mixer, the washing time is reduced.

In addition, since washing with high pressure washing water and high pressure gas alternately spraying the inner surface of the drum mixer, there is an effect that the cleaning rate is improved compared to the prior art that only depended on high pressure water.

Drum mixer, attached light, washing water, high pressure gas, iron ore

Description

CLEANING APPARATUS OF DRUM MIXER FOR SINTERING}

The present invention relates to a washing apparatus for a sintering drum mixer, and more particularly, to a sintering drum mixer which can wash the adhered light fixed on the inner surface of the drum mixer for preparing the raw material for sintering in the iron ore sintering process with high pressure water. It relates to a washing device of.

In general, iron ore is manufactured as agglomerated sintered ore into the blast furnace during the steelmaking process during the steel manufacturing process.

In the iron ore sintering process for producing iron ore as a sintered ore, iron ore, subsidiary materials (limestone, silica, quicklime) and raw materials (coke, semi-ore) are mixed by a drum mixer to produce a blended raw material for sintering. The prepared raw material for sintering is charged to the sintering machine cart supplied with the top light. Then, air is sucked in from the lower part of the sintering machine cart by a suction blower while heating the surface of the sintering compounding material. At this time, as the coke in the sintering compounding material layer is burned, a sintering reaction is performed to produce a sintered ore.

However, in the process of mixing iron ore, subsidiary materials and raw materials, adhered light with iron ore and subsidiary materials, raw materials, etc. is formed on the inner surface of the drum mixer, so that the mixing of the raw materials is not performed well and the quality of the sintered ore is deteriorated.

In order to solve this problem, a drum mixer cleaning apparatus for removing the inner surface of the drum mixer has been developed, the prior art is disclosed in Korean Utility Model Publication No. 2000-0003449.

The mixer cleaning apparatus for sintering by high pressure water according to the prior art has a structure for linearly reciprocating a high pressure water injection nozzle for injecting high pressure water on a guide pipe passing through the drum mixer. There is provided a discharge means for guidely discharging the adhering light removed by the high pressure water to the outside around the discharge port of the drum mixer.

The nozzle moving mechanism for linearly reciprocating the high pressure water jet nozzle comprises a plurality of pinch rollers rotatably arranged up and down in a predetermined frame to pressurize the outer surface of the hose connected to the high pressure water jet nozzle, and pinch rollers. A drive motor for rotating in reverse is provided. And, the hose reel is wound is provided, the hose reel is installed so that the rotational force of the drive motor is transmitted by the sprocket, chain, gear device, and the like / reverse rotation.

In the prior art configured as described above, when a plurality of pinch rollers are rotated forward / reversely by the driving of the drive motor, the hose moves by the pinch rollers such that the high pressure water injection nozzle is linearly reciprocated on the guide pipe. The hose is then wound or unwound on the hose reel.

However, since the mixer cleaning apparatus for sintering by high pressure water according to the prior art has a structure in which the high pressure water injection nozzle is linearly reciprocated and the inside of the drum mixer is cleaned, the mechanical device for linearly reciprocating the high pressure water injection nozzle has its structure. Is complicated, there was a problem that the installation cost is increased, there was a disadvantage that the cleaning time is long.

In addition, in washing the inside of the drum mixer, since the only high-pressure water depends on the internal cleaning rate of the drum mixer was inferior.

The present invention is to solve the problems of the prior art, an object of the present invention is to provide a cleaning device for a drum mixer for sintering to increase the cleaning rate of the drum mixer while the cleaning is made in a short time.

Washing apparatus of the sintering drum mixer of the present invention for achieving the above object is a washing apparatus of the sintering drum mixer for removing the adhered light attached to the inner surface of the drum mixer for producing a blended raw material for sintering in the iron ore sintering process with washing water. A water storage tank for storing the washing water; First and second pump parts for pumping the washing water in the water storage tank; A first water pipe through which the washing water pumped by the first pump part is transferred; A second water pipe through which the washing water pumped by the second pump part is transferred; One side is connected to the first water pipe is introduced into the drum mix in the longitudinal direction of the drum mix, the outer surface is provided with a plurality of injection nozzles for spraying the washing water transported by the first water pipe, A first spray pipe having the injection nozzle installed on an outer surface of the drum mix to face the first zone in a longitudinal direction; One side is connected to the second water pipe and is introduced into the drum mix in parallel with the first spray pipe, and faces the second zone so as to wash the second zone partitioning the inner surface of the drum mix in the longitudinal direction. It comprises a second injection pipe is installed on the outer surface of the injection nozzle.

And, a high pressure gas generating unit for generating a high pressure gas; A high pressure gas supply pipe connected to each of the first and second water pipes by branching the tip of the high pressure gas generated by the high pressure gas generating unit to be transferred to the first and second water pipes; First and second check valves installed on the first and second water pipes to prevent the washing water and the high pressure gas supplied by the high pressure gas supply pipe from flowing back into the first and second pump parts; A third check valve provided in the high pressure gas supply pipe to prevent the high pressure gas supplied to the first and second water pipes and the washing water transferred into the first and second water pipes from flowing back to the high pressure gas generating unit; Is done.

In addition, the water filter unit for filtering the washing water to be stored in the water storage tank; And a relief valve for bypassing the washing water and the high pressure gas to the water storage tank according to the pressure of the washing water and the high pressure gas installed on the first and second water pipes.

Preferably, the high pressure gas uses nitrogen.

According to the present invention, since the inner surface of the drum mixer can be washed at a time by introducing a plurality of injection tubes having a plurality of injection nozzles inside the drum mixer, the washing time is reduced.

In addition, since washing with high pressure washing water and high pressure gas alternately spraying the inner surface of the drum mixer, there is an effect that the cleaning rate is improved compared to the prior art that only depended on high pressure water.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

1 shows a structure of a washing apparatus for a drum mixer for sintering which is an embodiment of the present invention.

Referring to FIG. 1, the washing apparatus of the sintering drum mixer according to the present embodiment is introduced into the drum mixer 10, and a plurality of injection nozzles 43 are installed at different positions from each other. The first and second spray pipes 41 and 42, which can separate and separate the divided first and second zones 11 and 12, and the first and second spray pipes 41 and 42 by pumping the washing water. And first and second pump parts 51 and 52 which are respectively transferred to the pump.

The first and second spray pipes 41 and 42 are configured with different lengths, and are supported by the support pipes 60 installed inside the drum mixer 10, respectively. For convenience, referring to FIG. 1, a short injection pipe is referred to as a first injection pipe 41 and a second injection pipe 42 having a length longer than that of the first injection pipe 41. The inner surface of the drum mixer 10 cleaned by the first spray pipe 41 is the first zone 11 and the inner surface of the drum mixer 10 cleaned by the second spray pipe 42 is the second zone. It is called (12).

The first injection pipe 41 is formed to have a length corresponding to half of the length of the drum mixer 10 so that the tip thereof is positioned at the center of the drum mixer 10, and the second injection pipe 42 has a drum mixer 10. It is formed to a length corresponding to the entire length of.

The injection nozzle 43 is installed in the first injection pipe 41 at a position opposite to the inner first zone 11 of the drum mixer 10 at regular intervals along the longitudinal direction on the entire outer surface, and the second injection pipe ( 42 is provided on the outer surface of the portion which does not overlap with the first spray pipe 41 at a position opposed to the inner surface second zone 12 of the drum mixer 10 at regular intervals along the longitudinal direction. Therefore, the injection nozzle 43 provided in the 1st, 2nd injection pipe 41 and 42 becomes a shape arrange | positioned at regular intervals over the full length of the drum mixer 10. FIG.

Then, the first and second guide tanks for storing the washing water and the washing water pumped by the first and second pump parts 51 and 52 to the first and second spray pipes 41 and 42. Water pipes 31 and 32 are provided.

The first and second pumps 51 and 52 may include first and second pumps 51a and 52a for pumping washing water and first and second drive motors 51b for driving the first and second pumps 51a and 52a. , 52b).

In addition, the water filter unit 70 is provided on the water supply pipe 33 for supplying the washing water to the water storage tank 20. Therefore, the foreign matter contained in the washing water is removed by the water filter unit 70 to prevent clogging of the injection nozzle 43 and the failure of the first and second pumps 51a and 52a by the foreign matter.

The first solenoid valve 33a is provided on the water supply pipe 33 to control the supply of the washing water supplied to the water storage tank 20. In addition, the first and second check pipes 31 and 32 are provided with first and second check valves 31a and 32a to prevent the washing water pumped from the first and second pumps 51a and 52a from flowing back.

On the other hand, the washing apparatus of the sintering drum mixer of the present embodiment is further provided with a high-pressure gas generating unit 80 for generating a high-pressure gas. Then, the high pressure gas generated by the high pressure gas generating unit 80 is guided to the first and second water pipes 31 and 32 and the first and second injection pipes 41 and 42 and injected through the injection nozzle 43. High-pressure gas supply pipe 81 for connecting the high-pressure gas generating unit 80 and the first and second water pipes (31, 32) is provided.

The high pressure gas generating unit 80 uses a general compressor.

Preferably nitrogen is used as the high pressure gas. That is, by spraying the nitrogen gas of high pressure to remove the adhered light attached to the inner surface of the drum mix, and to prevent the clogging of the nozzle due to the adhered light removed when the high pressure water is injected.

In addition, by reducing the iron ore in the manufacturing process of the raw material of the adhesion light to remove oxygen, there is no generation of carbon monoxide during heating of the raw material, it is possible to obtain a homogeneous sintered ore.

The high pressure gas supply pipe 81 has one side connected to the compressor and the other side connected to the first and second water pipes 31 and 32, respectively, and the first and second discharge valves 31 and 32a are respectively discharged. 2 is connected to the water pipe (31,32). Therefore, the high pressure gas transferred by the high pressure gas supply pipe 81 to the first and second water pipes 31 and 32 does not flow back to the first and second pump parts 51 and 52. In addition, the washing water in the first and second water pipes 31 and 32 is also prevented from flowing back to the first and second pump parts 51 and 52.

In addition, a third check valve 81a is installed in the high-pressure gas supply pipe 81 to prevent the washing water transferred to the first and second water pipes 31 and 32 from flowing back to the compressor.

In addition, a second solenoid valve 81b is provided on the high pressure gas supply pipe 81 to automatically control the supply of the high pressure gas supplied to the first and second water pipes 31 and 32. A relief valve 34 is provided to bypass the washing water and the high pressure gas, which are transferred into the first and second water pipes 31 and 32, to the water storage tank 20 according to the pressure. Therefore, it is possible to prevent the injection nozzle 43 and the pipe from being damaged due to the sudden rise in the pressure of the washing water and the high-pressure gas being transferred.

Check valve and relief valve is a general type of valve, the detailed description thereof will be omitted.

Hereinafter, the operation of the present embodiment configured as described above will be described.

The first and second pumps 51a and 52a pump the washing water stored in the water storage tank 20 by the driving of the first and second driving motors 51b and 52b. The pumped high pressure washing water is sprayed on the inner surface of the drum mixer 10 through the spray nozzles 43 through the first and second water pipes 31 and 32 and the first and second spray pipes 41 and 42. At this time, the drum mixer 10 is rotated at a predetermined angular speed. Since the injection nozzle 43 provided in the 1st, 2nd injection pipe 41 and 42 is provided over the full length of the drum mixer 10, the whole inner surface of the drum mixer 10 is wash | cleaned simultaneously. Therefore, the washing operation of the drum mixer 10 is made in a short time.

Then, the high pressure gas generated by driving the compressor is supplied to the first and second water pipes 31 and 32 to be injected through the injection nozzle 43 through the first and second injection pipes 41 and 42.

The supply of the high pressure gas is intermittently made to the first and second water pipes 31 and 32 by automatically controlling the second solenoid valve 81b. The control of the solenoid valve is a general control of the supply of power for driving the solenoid, and a detailed description thereof will be omitted.

Therefore, the washing water and the high pressure gas are alternately sprayed through the spray nozzle 43 to hit the inner surface of the drum mixer 10. In particular, a high-pressure gas is intermittently drawn into the washing water being conveyed at a constant pressure to increase the conveying power of the washing water. As a result, an increase in the impact force of the washing water that strikes the inner surface of the drum mixer 10 makes it easier to remove the adhered light attached to the inner surface of the drum mixer 10.

On the other hand, when the high-pressure gas is supplied to the first and second water pipes 31 and 32, a pressure rise occurs instantaneously in the first and second water pipes 31 and 32. The first and second check valves 31a and 32a prevent the washing water in the water pipes 31 and 32 and the introduced high pressure gas from flowing back into the first and second pumps 51a and 52a. When the high pressure gas generator 80 is turned off, the washing water is prevented from flowing back into the high pressure gas generator 80 through the high pressure gas supply pipe 81 by the third check valve 81a.

 In addition, the washing water and the high pressure gas are bypassed to the water storage tank 10 by relief valves 34 provided on the first and second water pipes 31 and 32 to prevent damage to the spray nozzle 43 and the pipe. do.

As described above, the present embodiment is an example in which the high pressure gas is intermittently supplied into the first and second water pipes when the washing water is transferred through the first and second water pipes, but only one of the washing water and the high pressure gas is used. You can also choose to clean the inside of the drum mixer.

The embodiments of the present invention described above should not be construed as limiting the technical spirit of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

1 is a view showing an embodiment of a washing apparatus of a drum mixer for sintering according to the present invention,

<Description of Symbols for Main Parts of Drawings>

10: drum mixer 20: water storage tank

31: 1st water pipe 32: 2nd water pipe

33: water supply pipe 41: the first spray pipe

42: second injector 43: injection nozzle

51: first pump part 52: second pump part

60: support pipe 70: water filter

80: high pressure gas generating unit

Claims (4)

In the cleaning device of the drum mixer for sintering to remove the adhered light attached to the inner surface of the drum mixer for producing a sintering blending raw material with washing water in the iron ore sintering process, A water storage tank in which the washing water is stored; First and second pump parts for pumping the washing water in the water storage tank; A first water pipe through which the washing water pumped by the first pump part is transferred; A second water pipe through which the washing water pumped by the second pump part is transferred; One side is connected to the first water pipe is introduced into the drum mix in the longitudinal direction of the drum mix, the outer surface is provided with a plurality of injection nozzles for spraying the washing water transported by the first water pipe, A first spray pipe having the injection nozzle installed on an outer surface of the drum mix to face the first zone in a longitudinal direction; One side is connected to the second water pipe and is introduced into the drum mix in parallel with the first spray pipe, and faces the second zone so as to wash the second zone partitioning the inner surface of the drum mix in the longitudinal direction. A second injection pipe having the injection nozzle installed on an outer surface thereof, A high pressure gas generating unit generating a high pressure gas; A high pressure gas supply pipe connected to each of the first and second water pipes by branching the tip so that the high pressure gas generated by the high pressure gas generating unit is transferred to the first and second water pipes; First and second check valves installed on the first and second water pipes to prevent the washing water and the high pressure gas supplied by the high pressure gas supply pipe from flowing back into the first and second pump parts; A high pressure gas provided in the high pressure gas supply pipe and supplied to the first and second water pipes, and a third check valve to prevent backwash water from flowing into the high pressure gas generating unit; Washing apparatus of the drum mixer for sintering. delete The method of claim 1, A water filter unit for filtering the washing water to be stored in the water storage tank; Washing of the drum mixer for sintering, characterized in that it further comprises a relief valve for bypassing the washing water and the high pressure gas to the water storage tank in accordance with the pressure of the washing water and the high pressure gas is installed on the first and second water pipes Device. The method of claim 1, The high pressure gas is a washing apparatus for a drum mixer for sintering, characterized in that the nitrogen.

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