阅读说明：本技术 一种回转窑喷枪供气装置 (Rotary kiln spray gun gas supply device ) 是由 衡红 周平 尹丽 陈继科 赵小喜 黄东 于 2020-12-11 设计创作，主要内容包括：本发明公开了一种回转窑喷枪供气装置,包括多层环形套设的供气层,从内往外依次为中心通风层、煤气流层一、外环通风层一、煤气流层二、外环通风层二；所述中心通风层、外环通风层一、外环通风层二的内侧面均设置有沿环形面螺旋延伸的导气条；所述煤气流层一和煤气流层二均设置为多个沿圆周向供气的煤气流通气孔；供气层尾端均设置有尾端连接板。本发明的回转窑喷枪供气装置能有效改善回转窑内的气体组分,使整个回转窑内的气体浓度更均衡。(The invention discloses a rotary kiln spray gun gas supply device which comprises a plurality of gas supply layers annularly sleeved, wherein the gas supply layers sequentially comprise a central ventilation layer, a first coal gas flow layer, a first outer ring ventilation layer, a second coal gas flow layer and a second outer ring ventilation layer from inside to outside; air guide strips spirally extending along the annular surface are arranged on the inner side surfaces of the central ventilation layer, the outer ring ventilation layer I and the outer ring ventilation layer II; the coal gas flow layer I and the coal gas flow layer II are both provided with a plurality of coal gas flow vent holes for supplying gas along the circumferential direction; the tail ends of the air supply layers are provided with tail end connecting plates. The gas supply device of the rotary kiln spray gun can effectively improve gas components in the rotary kiln, and enables the gas concentration in the whole rotary kiln to be more balanced.)

1. A rotary kiln spray gun gas supply device is characterized in that: the device comprises a plurality of gas supply layers which are annularly sleeved, wherein a central ventilation layer, a first coal gas flow layer, a first outer ring ventilation layer, a second coal gas flow layer and a second outer ring ventilation layer are sequentially arranged from inside to outside; air guide strips spirally extending along the annular surface are arranged on the inner side surfaces of the central ventilation layer, the outer ring ventilation layer I and the outer ring ventilation layer II; the coal gas flow layer I and the coal gas flow layer II are both provided with a plurality of coal gas flow vent holes for supplying gas along the circumferential direction; the tail end of the gas supply layer is provided with a tail end connecting plate, and the tail end connecting plate is sequentially provided with a central ventilation layer sealing circular plate, a first gas flow layer sealing circular plate, a first outer ring ventilation layer sealing circular plate, a second gas flow layer sealing circular plate and a second outer ring ventilation layer sealing circular plate from the center of a circle to the outside; the central ventilation layer sealing circular plate, the first coal gas layer sealing annular plate, the first outer ring ventilation layer sealing annular plate, the second coal gas layer sealing annular plate and the second outer ring ventilation layer sealing annular plate are arranged on different planes.

2. The rotary kiln spray gun gas supply device as claimed in claim 1, wherein: the air guide strips are arranged in a plurality of strips.

3. The rotary kiln spray gun gas supply device as claimed in claim 2, characterized in that: the extending directions of the plurality of air guide strips are in the same circumferential direction.

4. The rotary kiln spray gun gas supply device as claimed in claim 1, wherein: the extension lengths of the central ventilation layer sealing circular plate, the first gas flow layer sealing annular plate, the first outer ring ventilation layer sealing annular plate, the second gas flow layer sealing annular plate and the second outer ring ventilation layer sealing annular plate are reduced in sequence.

5. The rotary kiln spray gun gas supply device as claimed in claim 1, wherein: and a central ventilation layer sealing circular plate through hole is formed in the central ventilation layer sealing circular plate.

6. The rotary kiln spray gun gas supply device as claimed in claim 1, wherein: and a coal gas flow layer-sealing ring plate through hole is formed in the coal gas flow layer-sealing ring plate.

7. The rotary kiln spray gun gas supply device as claimed in claim 1, wherein: and a sealing ring plate through hole of the outer ring ventilation layer is formed in the sealing ring plate of the outer ring ventilation layer.

8. The rotary kiln spray gun gas supply device as claimed in claim 1, wherein: the second sealing ring plate of the coal gas flow layer is provided with a through hole of the second sealing ring plate of the coal gas flow layer.

9. The rotary kiln spray gun gas supply device as claimed in claim 1, wherein: and the outer ring ventilation layer two sealing ring plate through holes are formed in the outer ring ventilation layer two sealing ring plate.

Technical Field

The invention relates to the field of rotary kiln equipment, in particular to a rotary kiln spray gun gas supply device.

Background

The rotary kiln is a rotary calcining kiln (commonly called rotary kiln), the shape of which is similar to that of a rotary bed, also called rotary bed kiln, and belongs to the building material equipment. Rotary kilns can be divided into cement kilns, metallurgical chemical kilns and lime kilns according to the different materials to be treated. The cement kiln is mainly used for calcining cement clinker and comprises a dry-process cement kiln and a wet-process cement kiln. The metallurgical chemical kiln is mainly used for magnetizing and roasting lean iron ore in steel plants in the metallurgical industry; oxidizing and roasting chromium and nickel iron ores; roasting bauxite in a refractory material plant, roasting clinker in an aluminum plant and aluminum hydroxide; roasting chromium ore sand, chromium ore powder and other minerals in a chemical plant. Lime kilns (i.e., active lime kilns) are used for roasting active lime and lightly calcined dolomite used in steel plants and iron and alloy plants.

The existing rotary kiln needs to use a rotary kiln spray gun for supplying air when in use, the air injection range and the air injection angle of the existing rotary kiln spray gun are fixed, the air in the rotary kiln has certain rotation circulation, local gas components in the air are different when the rotary kiln spray gun is used, the problem is not too big in common calcination, but the calcination defect of a finished product is easily caused when in fine calcination.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the air supply device of the rotary kiln spray gun, which can improve the air composition in the rotary kiln and improve the air injection range and distance.

The invention provides a rotary kiln spray gun gas supply device, which comprises a plurality of gas supply layers annularly sleeved, wherein the gas supply layers sequentially comprise a central ventilation layer, a first coal gas flow layer, a first outer ring ventilation layer, a second coal gas flow layer and a second outer ring ventilation layer from inside to outside; air guide strips spirally extending along the annular surface are arranged on the inner side surfaces of the central ventilation layer, the outer ring ventilation layer I and the outer ring ventilation layer II; the coal gas flow layer I and the coal gas flow layer II are both provided with a plurality of coal gas flow vent holes for supplying gas along the circumferential direction; the tail end of the gas supply layer is provided with a tail end connecting plate, and the tail end connecting plate is sequentially provided with a central ventilation layer sealing circular plate, a first gas flow layer sealing circular plate, a first outer ring ventilation layer sealing circular plate, a second gas flow layer sealing circular plate and a second outer ring ventilation layer sealing circular plate from the center of a circle to the outside; the central ventilation layer sealing circular plate, the first coal gas layer sealing annular plate, the first outer ring ventilation layer sealing annular plate, the second coal gas layer sealing annular plate and the second outer ring ventilation layer sealing annular plate are arranged on different planes.

The invention also provides the following optimization scheme:

preferably, the air guide strip is provided with a plurality of strips.

Preferably, the plurality of air guide strips extend in the same circumferential direction.

Preferably, the extension lengths of the central ventilation layer sealing circular plate, the first gas flow layer sealing annular plate, the first outer ring ventilation layer sealing annular plate, the second gas flow layer sealing annular plate and the second outer ring ventilation layer sealing annular plate are sequentially reduced.

Preferably, a central ventilation layer sealing circular plate through hole is formed in the central ventilation layer sealing circular plate.

Preferably, the first coal gas flow layer sealing ring plate is provided with a first coal gas flow layer sealing ring plate through hole.

Preferably, the first sealing ring plate of the outer ring ventilation layer is provided with a through hole of the first sealing ring plate of the outer ring ventilation layer.

Preferably, the second gas flow layer sealing ring plate is provided with a second gas flow layer sealing ring plate through hole.

Preferably, the outer ring ventilation layer two sealing ring plate is provided with an outer ring ventilation layer two sealing ring plate through hole.

The invention has the beneficial effects that:

1. the gas supply device of the rotary kiln spray gun can effectively improve gas components in the rotary kiln, so that the gas concentration in the whole rotary kiln is more balanced;

2. the gas supply device of the rotary kiln spray gun can have a certain gas rotation direction, so that adjacent gas flows can be smoothly attracted during gas outlet, and the gas mixing is accelerated;

3. the air flow supplied by the air supply device of the rotary kiln spray gun has certain rotary force, so that the sprayed air flow has strong driving force, and the air flow is pushed farther;

4. the air flow supplied by the air supply device of the rotary kiln spray gun can be finely adjusted along the rotating speed of the rotary kiln, so that the air flow direction supplied by the air supply device and the rotating direction of the rotary kiln have certain direction offset, and the air flow distribution is more balanced.

Drawings

FIG. 1 is a side view of a rotary kiln lance gas supply of a preferred embodiment of the present invention;

FIG. 2 is a perspective view of a rotary kiln lance gas supply of a preferred embodiment of the present invention;

FIG. 3 is a perspective view of a rotary kiln lance gas supply of a preferred embodiment of the present invention;

FIG. 4 is a side perspective view of a rotary kiln lance gas supply of a preferred embodiment of the present invention;

FIG. 5 is a cross-sectional view of a rotary kiln lance gas supply of a preferred embodiment of the present invention;

FIG. 6 is a perspective view of a rotary kiln lance gas supply of a preferred embodiment of the present invention;

FIG. 7 is a perspective view of a rotary kiln lance gas supply of a preferred embodiment of the present invention;

the specific reference numerals are:

1, a central ventilation layer; 2, a first coal gas flow layer; 3, an outer ring ventilation layer I; 4, a coal gas flow layer II; 5, an outer ring ventilation layer II; 6, air guide strips; 7 gas flow vent holes; 11 a central ventilation layer sealing circular plate; 12, sealing the through hole of the circular plate by a central ventilation layer; 21 a coal gas flow layer-sealing ring plate; 22 coal gas flow layer one sealing ring plate through hole; 31 an outer ring ventilation layer-a sealing ring plate; 32 a sealing ring plate through hole of the outer ring ventilation layer; 41 coal gas flow layer two sealing ring plates; 42, sealing the through hole of the annular plate by the coal gas flow layer II; 51, a second sealing ring plate of an outer ring ventilation layer; and 52, sealing the through hole of the annular plate by the outer annular ventilation layer II.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.

As shown in fig. 1-7, the invention firstly provides a rotary kiln spray gun gas supply device, which comprises a plurality of gas supply layers annularly sleeved from inside to outside, wherein the gas supply layers sequentially comprise a central ventilation layer 1, a coal gas flow layer I2, an outer ring ventilation layer I3, a coal gas flow layer II 4 and an outer ring ventilation layer II 5; the inner side surfaces of the central ventilation layer 1, the outer ring ventilation layer I3 and the outer ring ventilation layer II 5 are all provided with air guide strips 6 which extend spirally along the ring surface; the coal gas flow layer I2 and the coal gas flow layer II 4 are both provided with a plurality of coal gas flow vent holes 7 for supplying gas along the circumferential direction; the tail end of the gas supply layer is provided with a tail end connecting plate, and the tail end connecting plate is provided with a central ventilation layer sealing circular plate 11, a first gas flow layer sealing circular plate 21, an outer ventilation layer first sealing circular plate 31, a second gas flow layer sealing circular plate 41 and a second outer ventilation layer sealing circular plate 51 in sequence from the circle center to the outside; the central ventilation layer sealing circular plate 11, the first gas flow layer sealing annular plate 21, the first outer ventilation layer sealing annular plate 31, the second gas flow layer sealing annular plate 41 and the second outer ventilation layer sealing annular plate 51 are arranged on different planes.

The central ventilation layer 1 is arranged in a circular through hole; the coal gas flow layer I2, the outer ring ventilation layer I3, the coal gas flow layer II 4 and the outer ring ventilation layer II 5 are all arranged into annular through holes which are sleeved on the outer ring surface of the central ventilation layer 1; and the radial distance is larger towards the outside, so that the ventilation is convenient. Better, the sealed plectane 11 of central ventilation layer, a gas stream layer seals the ring board 21, a outer ring ventilation layer seals the ring board 31, two seals the ring board 41 of gas stream layer, two seals the ring board 51 of outer ring ventilation layer and central ventilation layer 1, a gas stream layer 2, an outer ring ventilation layer 3, a coal gas stream layer two 4, outer ring ventilation layer two 5 is rotatable coupling, only need set up rolling bearing in the junction, the benefit that sets up like this, under the unchangeable circumstances of air feed volume, can be through central ventilation layer 1, a gas stream layer 2, outer ring ventilation layer one 3, a coal gas stream layer two 4, the regulation of air feed blowout distance is realized in the autorotation of outer ring ventilation layer two 5.

The air guide strip 6 is provided with a plurality of strips. The extending directions of the plurality of air guide strips 6 are in the same circumferential direction. The air guide strips 6 are arranged in a ring shape, and the extension rotation directions are all arranged in the same rotation extension direction, which can not only influence the discharge of the air flow.

The extension lengths of the central ventilation layer sealing circular plate 11, the first gas flow layer sealing annular plate 21, the first outer ventilation layer sealing annular plate 31, the second gas flow layer sealing annular plate 41 and the second outer ventilation layer sealing annular plate 51 are reduced in sequence. The lengths of the central ventilation layer sealing circular plate 11, the first gas flow layer sealing annular plate 21, the outer ventilation layer sealing annular plate 31, the second gas flow layer sealing annular plate 41 and the outer ventilation layer sealing annular plate 51 are reduced from inside to outside in sequence, so that the gas supply pipe can be smoothly connected in a ventilation mode.

And a central ventilation layer sealing circular plate through hole 12 is formed in the central ventilation layer sealing circular plate 11. The coal gas flow layer one sealing ring plate 21 is provided with a coal gas flow layer one sealing ring plate through hole 22. The outer ring ventilation layer one sealing ring plate 31 is provided with an outer ring ventilation layer one sealing ring plate through hole 32. The second coal gas flow layer sealing ring plate 41 is provided with a second coal gas flow layer sealing ring plate through hole 42. The outer ring ventilation layer two sealing ring plate 51 is provided with an outer ring ventilation layer two sealing ring plate through hole 52.

The number and the radius of the through holes on the central ventilation layer sealing circular plate 11, the first gas flow layer sealing annular plate 21, the first outer ventilation layer sealing annular plate 31, the second gas flow layer sealing annular plate 41 and the second outer ventilation layer sealing annular plate 51 are changed to be large along with the sequence from inside to outside so as to adapt to more ventilation.

Example one

The rotary kiln spray gun gas supply device comprises a plurality of gas supply layers which are annularly sleeved, wherein a central ventilation layer 1, a coal gas flow layer I2, an outer ring ventilation layer I3, a coal gas flow layer II 4 and an outer ring ventilation layer II 5 are sequentially arranged from inside to outside; the inner side surfaces of the central ventilation layer 1, the outer ring ventilation layer I3 and the outer ring ventilation layer II 5 are all provided with air guide strips 6 which extend spirally along the ring surface; the coal gas flow layer I2 and the coal gas flow layer II 4 are both provided with a plurality of coal gas flow vent holes 7 for supplying gas along the circumferential direction; the tail end of the gas supply layer is provided with a tail end connecting plate, and the tail end connecting plate is provided with a central ventilation layer sealing circular plate 11, a first gas flow layer sealing circular plate 21, an outer ventilation layer first sealing circular plate 31, a second gas flow layer sealing circular plate 41 and a second outer ventilation layer sealing circular plate 51 in sequence from the circle center to the outside; the central ventilation layer sealing circular plate 11, the first gas flow layer sealing annular plate 21, the first outer ventilation layer sealing annular plate 31, the second gas flow layer sealing annular plate 41 and the second outer ventilation layer sealing annular plate 51 are arranged on different planes. The air guide strip 6 is provided with a plurality of strips. The extending directions of the plurality of air guide strips 6 are in the same circumferential direction. The extension lengths of the central ventilation layer sealing circular plate 11, the first gas flow layer sealing annular plate 21, the first outer ventilation layer sealing annular plate 31, the second gas flow layer sealing annular plate 41 and the second outer ventilation layer sealing annular plate 51 are reduced in sequence. And a central ventilation layer sealing circular plate through hole 12 is formed in the central ventilation layer sealing circular plate 11. The coal gas flow layer one sealing ring plate 21 is provided with a coal gas flow layer one sealing ring plate through hole 22. The outer ring ventilation layer one sealing ring plate 31 is provided with an outer ring ventilation layer one sealing ring plate through hole 32. The second coal gas flow layer sealing ring plate 41 is provided with a second coal gas flow layer sealing ring plate through hole 42. The outer ring ventilation layer two sealing ring plate 51 is provided with an outer ring ventilation layer two sealing ring plate through hole 52.

The application method of the rotary kiln spray gun gas supply device in the embodiment comprises the following steps:

the central ventilation layer sealing circular plate through hole 12, the coal gas flow layer first sealing ring plate through hole 22, the outer ring ventilation layer first sealing ring plate through hole 32, the coal gas flow layer second sealing ring plate through hole 42 and the outer ring ventilation layer second sealing ring plate through hole 52 are all connected to a gas supply pipe to supply gas, when the rotary kiln normally works, normal gas supply is carried out, when the gas supply amount needs to be increased, the increased air supply can pass through the gas guide strips 6 of the central ventilation layer 1, the outer ring ventilation layer first 3 and the outer ring ventilation layer second 5, so that the rotation degree of air is increased, the coal gas flows of the coal gas flow layer first 2 and the coal gas flow layer second 4 are better driven to flow, when the air flows in the through holes of the coal gas flow layer first 2 and the coal gas flow layer second 4, the air flow has no rotation direction, and is driven by the air supply of the central ventilation layer 1, the outer ring ventilation layer first 3 and the outer ring ventilation layer second 5 after the outlet, so that the mixing of the coal, and does not cause air current to rush. The air supply can realize better air supply mixing and adjustment of the air supply spraying distance and air supply direction. When the rotary kiln accelerates or decelerates, the direction of the gas supply can be adjusted by adjusting the gas supply speed.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.