Spraying and dust settling device for tapping machine in front of blast furnace

Abstract

The utility model relates to the technical field of blast furnace dust suppression devices, in particular to a spray dust suppression device for a blast furnace stokehole tapping machine, which comprises a blast furnace, a stokehole control opening is mounted on the side edge of the bottom of the blast furnace, and a spray dust suppression mechanism is arranged at the outer side end of the stokehole control opening; the spraying and dust-settling mechanism comprises a material guide groove, a plurality of air blowing pipes are uniformly distributed and mounted on the inner side of the material guide groove, a first pressure-equalizing air cavity is mounted at the bottom of the material guide groove, a second pressure-equalizing air cavity is formed in the upper side of the material guide groove, a through pipe is arranged on the front side of the second pressure-equalizing air cavity, a plurality of atomizing nozzles are uniformly distributed and mounted on the through pipe, and a water injection pipe is mounted on the rear side of the through pipe in a communicating manner. Through the arrangement of the spraying and dust falling mechanism, water mist is sprayed by the atomizing nozzle to combine dust in air above the material guide groove, the dust falling effect is achieved, meanwhile, the combined effect of the first pressure equalizing air cavity and the second pressure equalizing air cavity is used, water mist and dust combined objects fall down to the side edge of the material guide groove, and the quality of follow-up steel production is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to blast furnace dust falling device technical field especially relates to a blast furnace forehearth opening machine is with spray dust falling device. BACKGROUND

[0002] The blast furnace is a kind of vertical reactor for producing liquid pig iron, and is an important link of modern steel production.

[0003] The blast furnace needs to be treated to reduce dust before and during blowing, to reduce the influence of dust impurities on the purity of molten iron, and the existing blast furnace dust falling generally uses atomized water droplets combined with dust in the air to achieve dust falling effect.

[0004] But because atomized water droplets are combined with dust, their weight is relatively high, and part of them falls under the action of gravity and combines with molten iron, thereby causing the existing blast furnace dust falling device to affect the purity of molten iron to some extent, to solve the drawbacks in the prior art, we propose a blast furnace forehearth opening machine is with spray dust falling device. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the shortcomings in the prior art and proposes a blast furnace forehearth opening machine is with spray dust falling device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A blast furnace forehearth opening machine is with spray dust falling device, including blast furnace, the blast furnace bottom side installs forehearth control opening, the forehearth control opening outside end is provided with spray dust falling mechanism;The spray dust falling mechanism includes guide chute, the guide chute inboard is evenly installed with several air blowing pipes, the guide chute bottom is installed with first pressure equalizing cavity, the guide chute upper side is provided with second pressure equalizing cavity, the second pressure equalizing cavity front side is provided with through pipe, the through pipe is evenly installed with several atomizing nozzles, the through pipe rear side is communicated and is installed with water injection pipe, the water injection pipe passes to the second pressure equalizing cavity back, the second pressure equalizing cavity front side is provided with several air blowing holes.

[0008] Further, the air blowing hole is located at the rear side of the atomizing nozzle, and the air blowing hole opening position corresponds to the atomizing nozzle one by one.

[0009] Further, the second pressure equalizing cavity front side is fixedly installed with flared cover, and the atomizing nozzle is located in the inside of the flared cover.

[0010] Further, the second pressure equalizing cavity bottom is fixedly installed with supporting leg.

[0011] Further, the lower end of the water injection pipe is communicated with a high-pressure water pump, and the side of the high-pressure water pump is provided with a water suction pipe.

[0012] Further, the lower end of the air blowing pipe penetrates into the lower side of the material guide groove, and the air blowing pipe is communicated with the inner side of the first uniform pressure air cavity, and a conical air outlet is arranged at the upper end of the air blowing pipe.

[0013] Further, the side of the material guide groove is provided with a high-pressure air tank, the high-pressure air tank is communicated with the first uniform pressure air cavity and the second uniform pressure air cavity through a double pipe, the side of the high-pressure air tank is provided with a high-pressure air pump, the high-pressure air pump is connected with the high-pressure air tank through a gas conveying pipe, and the air suction pipe is fixedly arranged at the air suction end of the high-pressure air pump.

[0014] Further, the dust cover is screwed at the end of the air suction pipe.

[0015] Compared with the related art, the blast furnace front opening machine spray dust removal device has the following beneficial effects:

[0016] In the utility model, the spray dust removal mechanism is arranged, the atomizing nozzle sprays water mist to combine dust in the air above the material guide groove, realizes dust removal effect, and uses the second uniform pressure air cavity to blow air laterally, prevents dust from entering molten iron in the material guide groove, and reduces purity of molten iron.

[0017] In addition, the air blowing pipe is evenly arranged in the inner side of the material guide groove, blows air upward under the action of the first uniform pressure air cavity, and then makes the water mist dust combination not to fall into the material guide groove, combines the lateral blowing effect of the upper side, makes the water mist dust combination fall to the side of the material guide groove, and then makes the purity of molten iron not to be affected by dust, and guarantees the quality of subsequent steel production. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic view of the blast furnace front opening machine spray dust removal device.

[0019] Figure 2 It is a three-dimensional structure schematic view of the blast furnace front opening machine spray dust removal device. Figure One ;

[0020] Figure 3 It is a three-dimensional structure schematic view of the blast furnace front opening machine spray dust removal device. Figure Two ;

[0021] Figure 4 It is a three-dimensional structure schematic view of the blast furnace front opening machine spray dust removal device.

[0022] In the figure: 1, blast furnace; 2, furnace front control opening; 3, spray dust fall mechanism; 4, material guide groove; 5, air blowing pipe; 51, conical cylinder air outlet; 6, first pressure equalizing air chamber; 7, support leg; 8, second pressure equalizing air chamber; 81, air blowing hole; 9, flared cover; 10, through pipe; 11, atomizing nozzle; 12, water injection pipe; 13, high-pressure water pump; 14, water suction pipe; 15, high-pressure air pump; 16, air suction pipe; 17, dust cover; 18, air conveying pipe; 19, high-pressure air tank; 20, double through pipe. DETAILED DESCRIPTION

[0023] The utility model will be further described below in combination with the drawings and embodiments.

[0024] Reference Figures 1-4 A blast furnace front opening machine spray dust fall device: including blast furnace 1, blast furnace 1 bottom side installs furnace front control opening 2, and the outside end of furnace front control opening 2 is provided with spray dust fall mechanism 3;Spray dust fall mechanism 3 includes material guide groove 4, and the inside of material guide groove 4 is evenly installed with several air blowing pipes 5, and the bottom of material guide groove 4 is installed with first pressure equalizing air chamber 6, and the upside of material guide groove 4 is provided with second pressure equalizing air chamber 8, and the front side of second pressure equalizing air chamber 8 is provided with through pipe 10, and the through pipe 10 is evenly installed with several atomizing nozzles 11, and the rear side of through pipe 10 is communicated and is installed with water injection pipe 12, and water injection pipe 12 passes to the back of second pressure equalizing air chamber 8, and the front side of second pressure equalizing air chamber 8 is provided with several air blowing holes 81.

[0025] In the present way, the side of material guide groove 4 is provided with high-pressure air tank 19, and double through pipe 20 is communicated between high-pressure air tank 19 and first pressure equalizing air chamber 6 and second pressure equalizing air chamber 8, and high-pressure air pump 15 is arranged on the side of high-pressure air tank 19, and air conveying pipe 18 is connected between high-pressure air pump 15 and high-pressure air tank 19, and air suction pipe 16 is fixedly installed on the air suction end of high-pressure air pump 15.

[0026] Through the above-mentioned mode of setting, high-pressure air tank 19 inputs air to its inside through high-pressure air pump 15, so that the inside of high-pressure air tank 19 is in high-pressure state, under the action of high pressure, air is injected into first pressure equalizing air chamber 6 and second pressure equalizing air chamber 8 through double through pipe 20 at the same time, and then air blowing pipe 5 communicated with the upside of first pressure equalizing air chamber 6 blows air from the inside of material guide groove 4 upward, and second pressure equalizing air chamber 8 blows air laterally through air blowing hole 81, and then under the comprehensive action of first pressure equalizing air chamber 6 and second pressure equalizing air chamber 8, the inside of material guide groove 4 has the effect of blowing air upward and blowing air laterally on the upside at the same time, and then the water mist dust combination is blown to one side of material guide groove 4 and falls, and does not directly fall into material guide groove 4, so that the purity of molten iron is guaranteed when material guide groove 4 conveys molten iron.

[0027] In the present way, dust cover 17 is screwed and installed on the end of air suction pipe 16.

[0028] Through the setting of the dust cover 17, dust cannot be sucked into the conveying by the high-pressure air pump 15, thereby reducing the influence of dust on the spray dust-settling mechanism 3.

[0029] In the present mode, the air blowing holes 81 are located at the rear side of the atomizing nozzle 11, and the air blowing holes 81 are arranged one-to-one corresponding to the atomizing nozzle 11.

[0030] Through the setting of the air blowing holes 81, when air is blown out of the air blowing holes 81, a lateral blowing effect is generated, and the water mist generated by the atomizing nozzle 11 is blown sideways, so that the water mist can combine with the dust on the upper side of the material guide groove 4, and the dust-settling effect is achieved.

[0031] In the present mode, the flared cover 9 is fixedly installed at the front side of the second uniform pressure air cavity 8, and the atomizing nozzle 11 is located inside the flared cover 9.

[0032] Through the setting of the flared cover 9, the flared cover 9 has the effect of enlarging the atomizing nozzle 11 and the lateral blowing range of the second uniform pressure air cavity 8, and the dust-settling range of the upper side of the material guide groove 4 is enlarged, thereby improving the dust-settling effect.

[0033] In the present mode, the support leg 7 is fixedly installed at the bottom of the second uniform pressure air cavity 8.

[0034] Through the setting of the support leg 7, the support leg 7 provides support for the second uniform pressure air cavity 8.

[0035] In the present mode, the high-pressure water pump 13 is connected and installed at the lower side end of the water injection pipe 12, and the water suction pipe 14 is installed at the side of the high-pressure water pump 13.

[0036] Through the setting of the high-pressure water pump 13, the water is sucked into the dust-settling water through the water suction pipe 14, and then the water is conveyed to the atomizing nozzle 11 through the water injection pipe 12 and the through pipe 10.

[0037] In the present mode, the air blowing pipe 5 penetrates to the lower side of the material guide groove 4, and the air blowing pipe 5 is connected to the inside of the first uniform pressure air cavity 6, and the conical air outlet 51 is arranged at the upper side port of the air blowing pipe 5.

[0038] Through the setting of the conical air outlet 51 arranged at the upper side port of the air blowing pipe 5, the conical air outlet 51 has the effect of narrowing the opening, preventing the molten iron conveyed in the material guide groove 4 from splashing into the air blowing pipe 5.

[0039] The working principle of the spray dust-settling device for the blast furnace front opening machine is as follows:

[0040] In use, when the blast furnace 1 is started, the spray dust-settling mechanism 3 is started in advance, and then the furnace front control opening 2 is opened, the molten iron in the blast furnace 1 flows from the furnace front control opening 2 to the guide chute 4, under the combined blowing action of the air blowing pipe 5 and the upper second equalizing air chamber 8, the dust in the guide chute 4 is blown to the side, and under the action of the high-pressure water pump 13, the dust-settling water is delivered to the atomizing nozzle 11 through the water injection pipe 12 and the through pipe 10, and then under the side blowing action of the second equalizing air chamber 8, the water mist sprayed from the atomizing nozzle 11 drifts to the side, the water mist and the dust particles on the upper side of the guide chute 4 combine to form a water mist-dust combination, under the combined action of the side blowing and the upward blowing, the water mist-dust combination drifts to the side of the guide chute 4, avoiding the water mist-dust combination from falling into the guide chute 4, and the purity of the molten iron in the guide chute 4 is guaranteed.

[0041] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A spray dust-settling device for a blast furnace bell, characterized by comprising: Including blast furnace (1), the blast furnace (1) bottom side is equipped with furnace front control opening (2), and the outer side end of the furnace front control opening (2) is provided with spray dust fall mechanism (3); The spray dust fall mechanism (3) includes guide chute (4), a plurality of air blowing pipes (5) are uniformly installed in the inner side of the guide chute (4), the guide chute (4) bottom is equipped with first pressure equalizing cavity (6), the guide chute (4) upper side is provided with second pressure equalizing cavity (8), the second pressure equalizing cavity (8) front side is provided with through pipe (10), a plurality of atomizing nozzles (11) are uniformly installed on the through pipe (10), the through pipe (10) rear side is communicatedly installed with water injection pipe (12), the water injection pipe (12) penetrates to the back of second pressure equalizing cavity (8), a plurality of air blowing holes (81) are formed in the front side of second pressure equalizing cavity (8).

2. The spray dust-settling device for a blast furnace front opening machine according to claim 1, characterized by The air blowing hole (81) is located at the rear side of the atomizing nozzle (11), and the air blowing hole (81) is formed at a position corresponding to the atomizing nozzle (11).

3. The spray dust-settling device for a blast furnace front opening machine according to claim 1, characterized by The second pressure equalizing cavity (8) front side is fixedly installed with flared cover (9), and the atomizing nozzle (11) is located in the inner side of the flared cover (9).

4. The spray dust-settling device for a blast furnace bell according to claim 1, characterized in that, The second pressure equalizing cavity (8) bottom is fixedly installed with supporting leg (7).

5. The spray dust-settling device for a blast furnace bell according to claim 1, characterized in that, The water injection pipe (12) lower side end is communicatedly installed with high-pressure water pump (13), and the high-pressure water pump (13) side is installed with water suction pipe (14).

6. The spray dust-settling device for a blast furnace bell according to claim 1, characterized in that, The air blowing pipe (5) lower end penetrates to the lower side of the guide chute (4), and the air blowing pipe (5) is communicated with the inner side of the first pressure equalizing cavity (6), and the air blowing pipe (5) upper side port is provided with conical cylinder air outlet (51).

7. The spray dust-settling device for a blast furnace bell according to claim 1, characterized in that, The guide chute (4) side is provided with high-pressure gas tank (19), the high-pressure gas tank (19) is communicated with the first pressure equalizing cavity (6) and the second pressure equalizing cavity (8) through double-way pipe (20), the high-pressure gas tank (19) side is provided with high-pressure gas pump (15), the high-pressure gas pump (15) and the high-pressure gas tank (19) are connected through gas conveying pipe (18), and the high-pressure gas pump (15) suction end is fixedly installed with air suction pipe (16).

8. The spray dust-settling device for a blast furnace bell according to claim 7, characterized in that The dust cover (17) is screwed and installed at the end of the air suction pipe (16).

Images