CN215489733U

CN215489733U - Pulverized coal and gas fuel mixed combustion burner for rotary kiln

Info

Publication number: CN215489733U
Application number: CN202121266944.5U
Authority: CN
Inventors: 谢和坤
Original assignee: Danyang Meiya Cement Machinery Equipment Co ltd
Current assignee: Danyang Meiya Cement Machinery Equipment Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-01-11
Anticipated expiration: 2031-06-08

Abstract

The utility model belongs to the technical field of burners, and particularly relates to a pulverized coal and gas fuel mixed combustion burner for a rotary kiln. The utility model has the advantages that the corrugated compensator is arranged between the burner body and the outer sleeve, the relative position between the outer sleeve and the burner body is adjusted by rotating the adjusting screw rod, so that the section area of the slope plate in the cyclone air channel is changed, the powder quantity of the cyclone air channel is controlled, and the flame combustion size is controlled.

Description

Pulverized coal and gas fuel mixed combustion burner for rotary kiln

Technical Field

The utility model relates to the technical field of burners, in particular to a pulverized coal and gas fuel mixed combustion burner for a rotary kiln.

Background

The combustor of the rotary kiln mostly extends into a kiln head cylinder body through a kiln head cover, and an equipment assembly for heating materials to a required temperature through flame and radiation is mainly used in industrial production and manufacturing, and the combustor for the rotary kiln in the prior art has the following problems in the use process:

although the combustor makes material co-combustion to powder gas co-combustion among the prior art, improves the variety of its burning, its utilization ratio of the burning energy is lower, and the energy consumption is great, and inconvenience is caused the waste by make full use of, and adjusts the heating power intensity as required inconveniently, uses very inconveniently.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a pulverized coal and gas fuel mixed combustion burner for a rotary kiln, which solves the problems that although the burner in the prior art performs substance mixed combustion on pulverized coal and gas mixed combustion to improve the combustion diversity, the utilization rate of combustion energy is low, the energy consumption is high, the burner is inconvenient to be fully utilized to cause waste, the thermal strength is inconvenient to adjust according to the requirement, and the burner is inconvenient to use.

The second technical proposal.

The utility model specifically adopts the following technical scheme for realizing the purpose: the utility model provides a pulverized coal and gas fuel co-combustion combustor for rotary kiln, includes the combustor body, the inside of combustor body is provided with central wind passageway pipe and whirl wind passageway from inside to outside respectively, central wind passageway pipe is formed by two inside and outside tuber pipes slip concatenation, the inner wall of whirl wind passageway is provided with the ramp plate, the inside of whirl wind passageway slides through the ramp plate has the outer tube, it is spacing to connect through adjusting device between combustor body and the outer tube, the end fixing of outer tube has sealed groove block, the outer wall of outer tube is fixed with fine coal gas import pipe, fine coal gas import pipe's surface is equipped with first valve, the one end of combustor body is provided with the ignitor.

Furthermore, the slope plate is designed to be an inclined plane with a certain inclination angle, and the slope plate is attached to the outer sleeve.

Furthermore, adjusting device includes first flange and second flange, the one end at the combustor body is installed to first flange, the one end at the outer tube is installed to the second flange, first flange and second flange pass through adjusting screw threaded connection, be provided with the ripple compensator between first flange and the second flange.

Furthermore, a spring is fixed inside the sealing groove block, a sealing ring is fixed at the end of the spring and slides on the inner wall of the sealing groove block, and the top of the sealing ring is attached to the inner wall of the cyclone air channel.

Furthermore, an outer clean air pipe is fixed on the inner wall of the central air passage pipe, the end part of the outer clean air pipe penetrates through the rotational flow air passage and the burner body and extends to the outside, and a second valve is arranged on the surface of the outer clean air pipe.

Further, a connecting cylinder is installed to the one end of combustor body, the outer wall surface of connecting cylinder is equidistant to be provided with the banking pin, the tip of connecting cylinder is installed and is held together the flame cover.

(III) advantageous effects

Compared with the prior art, the utility model provides a pulverized coal and gas fuel mixed combustion burner for a rotary kiln, which has the following beneficial effects:

according to the utility model, the corrugated compensator is arranged between the burner body and the outer sleeve, the relative position between the outer sleeve and the burner body is adjusted by rotating the adjusting screw rod, so that the cross-sectional area of the slope plate in the cyclone air channel is changed, the powder quantity of the cyclone air channel is controlled, and the flame combustion size is controlled.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial cross-sectional view of the burner body of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2 according to the present invention.

In the figure: 1. a burner body; 2. a central wind channel tube; 3. a swirling air passage; 4. a ramp plate; 5. an outer sleeve; 6. an adjustment device; 601. a first flange; 602. a second flange; 603. a ripple compensator; 604. adjusting the screw rod; 7. a pulverized coal/gas inlet pipe; 8. a first valve; 9. sealing the groove block; 901. a spring; 902. a seal ring; 10. an outer clean air duct; 11. a second valve; 12. a igniter; 13. a connecting cylinder; 14. a limit pin; 15. and (4) collecting flame covers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in figure 1 of the drawings, in which, fig. 2 and fig. 3 show that a pulverized coal and gas fuel mixed combustion burner for a rotary kiln according to an embodiment of the present invention includes a burner body 1, a central air passage tube 2 and a swirling air passage 3 are respectively disposed inside the burner body 1 from inside to outside, the central air passage tube 2 is formed by splicing two internal and external air ducts, a slope plate 4 is disposed on an inner wall of the swirling air passage 3, an outer sleeve 5 is slidably disposed inside the swirling air passage 3 through the slope plate 4, the burner body 1 and the outer sleeve 5 are connected and limited by an adjusting device 6, a sealing groove block 9 is fixed at an end of the outer sleeve 5, a pulverized coal/gas inlet tube 7 is fixed on an outer wall of the outer sleeve 5, a first valve 8 is disposed on a surface of the pulverized coal/gas inlet tube 7, and an igniter 12 is disposed at one end of the burner body 1 and connected to each passage in the burner body 1; the corrugated compensator 603 is arranged between the burner body 1 and the outer sleeve 5, the relative position between the outer sleeve 5 and the burner body 1 is adjusted by rotating the adjusting screw 604, so that the cross-sectional area of the slope plate 4 in the cyclone air channel 3 is changed, the powder quantity of the powder is controlled, and the flame combustion size is controlled, the cyclone air channel 3, the central air channel pipe 2 and the outer clean air pipe 10 are arranged in the burner body 1 to assist the mixed combustion of pulverized coal or coal gas, so that the combustion is more sufficient and uniform, the combustion efficiency is improved, the first valve 8 and the second valve 11 are arranged on the surfaces of the pulverized coal/coal gas inlet pipe 7 and the outer clean air pipe 10, the inlet quantity is adjusted and controlled, the adjustment and control are convenient according to the combustion working condition of the rotary kiln, the elastic resilience of the sealing ring 902 is utilized to press the inner wall channel of the cyclone air channel 3 by the arrangement of the sealing groove block 9, improve the sealing performance and prevent air leakage.

As shown in fig. 2, in some embodiments, the slope plate 4 is designed as an inclined plane with a certain inclination angle, and the slope plate 4 is attached to the outer sleeve 5; through the setting of ramp plate 4, conveniently form the cross-section, change the size of the entering volume of whirl wind passageway 3, conveniently adjust control.

As shown in fig. 1, in some embodiments, the adjusting device 6 includes a first flange 601 and a second flange 602, the first flange 601 is mounted at one end of the burner body 1, the second flange 602 is mounted at one end of the outer sleeve 5, the first flange 601 and the second flange 602 are connected by a screw 604, and a ripple compensator 603 is disposed between the first flange 601 and the second flange 602; the adjusting screw 604 is manually rotated to enable the swirling air channel 3 and the outer sleeve 5 to move relatively, so that the entering amount of pulverized coal or coal gas is conveniently adjusted, and the heat quantity of combustion flame is controlled.

As shown in fig. 3, in some embodiments, a spring 901 is fixed inside the seal groove block 9, a seal ring 902 is fixed at the end of the spring 901, the seal ring 902 slides on the inner wall of the seal groove block 9, and the top of the seal ring 902 is attached to the inner wall of the swirling air channel 3; through the setting of sealed groove block 9, when making things convenient for between combustor body 1 and the outer tube 5 to move, the gap that forms seals, utilizes the elasticity of spring 901 to kick-back and drives the 3 inner walls of sealing washer 902 extrusion whirl wind passageway, prevents gas leakage.

As shown in fig. 1, in some embodiments, an outer clean air pipe 10 is fixed on the inner wall of the central air passage pipe 2, the end of the outer clean air pipe 10 extends to the outside through the swirling air passage 3 and the burner body 1, and a second valve 11 is arranged on the surface of the outer clean air pipe 10; through the setting of outer clean tuber pipe 10, convenient manual rotation second valve 11 controls outer clean tuber pipe 10 and gets into the amount of wind, and the speed of the inside fuel burning of supplementary combustor body 1 makes it burn more fast.

As shown in fig. 1, in some embodiments, a connecting cylinder 13 is installed at one end of the burner body 1, limit pins 14 are distributed on the outer wall surface of the connecting cylinder 13 at equal intervals, and a flame gathering cover 15 is installed at the end of the connecting cylinder 13; through connecting a connecting cylinder 13 in the one end of combustor body 1 and inserting it inside through the kiln head, utilize setting up of banking pin 14 to fix spacing convenience and rotary kiln on same axis, through holding together the setting of flame cover 15, be convenient for draw in combustion flame in, improve the burning and utilize the effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pulverized coal and gas fuel co-combustion combustor for rotary kiln, includes combustor body (1), its characterized in that: the utility model discloses a burner, including combustor body (1), the inside of combustor body (1) is provided with center wind passageway pipe (2) and whirl wind passageway (3) from inside to outside respectively, center wind passageway pipe (2) is formed by two inside and outside tuber pipes concatenations, the inner wall of whirl wind passageway (3) is provided with ramp plate (4), the inside of whirl wind passageway (3) has outer tube (5) through ramp plate (4) slip, it is spacing to connect through adjusting device (6) between combustor body (1) and outer tube (5), the end fixing of outer tube (5) has sealed groove block (9), the outer wall of outer tube (5) is fixed with fine coal gas/coal gas inlet pipe (7), the surface of fine coal gas/coal gas inlet pipe (7) is equipped with first valve (8), the one end of combustor body (1) is provided with ignition ware (12).

2. The pulverized coal and gas fuel mixed combustion burner for a rotary kiln as claimed in claim 1, wherein: the slope plate (4) is designed to be an inclined plane with a certain inclination angle, and the slope plate (4) is attached to the outer sleeve (5).

3. The pulverized coal and gas fuel mixed combustion burner for a rotary kiln as claimed in claim 1, wherein: the adjusting device (6) comprises a first flange (601) and a second flange (602), the first flange (601) is installed at one end of the combustor body (1), the second flange (602) is installed at one end of the outer sleeve (5), the first flange (601) and the second flange (602) are in threaded connection through an adjusting screw rod (604), and a ripple compensator (603) is arranged between the first flange (601) and the second flange (602).

4. The pulverized coal and gas fuel mixed combustion burner for a rotary kiln as claimed in claim 1, wherein: a spring (901) is fixed inside the sealing groove block (9), a sealing ring (902) is fixed at the end of the spring (901), the sealing ring (902) slides on the inner wall of the sealing groove block (9), and the top of the sealing ring (902) is attached to the inner wall of the swirling air channel (3).

5. The pulverized coal and gas fuel mixed combustion burner for a rotary kiln as claimed in claim 1, wherein: the inner wall of the central air channel pipe (2) is fixed with an outer clean air pipe (10), the end part of the outer clean air pipe (10) penetrates through the cyclone air channel (3) and the burner body (1) and extends to the outside, and a second valve (11) is arranged on the surface of the outer clean air pipe (10).

6. The pulverized coal and gas fuel mixed combustion burner for a rotary kiln as claimed in claim 1, wherein: a connecting cylinder (13) is installed to the one end of combustor body (1), the outer wall surface equidistant distribution of connecting cylinder (13) is provided with stop pin (14), hold together flame cover (15) are installed to the tip of connecting cylinder (13).