Spraying device for repairing tunnel kiln

Abstract

The utility model relates to a spraying device for repairing a tunnel kiln, which comprises a spraying pipe parallel to the inner side wall of the tunnel kiln, sprayers are uniformly arranged on the outer wall of the spraying pipe, the spraying pipe is connected with a spraying material pump, a bottom frame fixedly mounted on a kiln car at the top of a track in the tunnel kiln is fixed at the bottom of the spraying material pump, and a slurry box is fixed at the top of the bottom frame. A slurry pumping pipe is fixed to the bottom of the slurry box, and the other end of the slurry pumping pipe is fixed to the spraying material pump. According to the utility model, the surfaces of the kiln lining refractory bricks can be quickly sprayed by means of the kiln car of the tunnel kiln, the construction technical difficulty is small, and the construction is easy; the application of the spraying technology is higher in efficiency and lower in labor cost compared with the previous brick changing technology; the working surface of the sprayed refractory brick becomes a whole after being dried and sintered, so that the service life of the refractory brick can be greatly prolonged; the sprayed refractory brick is high in erosion resistance, and the situation that refractory brick materials fall off to affect the product quality is avoided.

Description

Technical Field

[0001] The utility model relates to a spraying device for repairing a tunnel kiln, belonging to the technical field of repairing. Background Art

[0002] After long-term use, the tunnel kiln for high-temperature alumina calcination is corroded by the high temperature of alkaline substances in the working environment, and the refractory bricks on the working surface of the tunnel kiln are prone to erosion and peeling. The direct consequences are: first, the refractory bricks are severely peeled off, affecting the service life of the kiln; second, the peeled refractory particles fall into the calcined alumina products, seriously affecting the product quality. At present, the local replacement repair technology is adopted, but the local repair effect is poor, it is not firm, and it is easy to continue to fall off; local repair is time-consuming and labor-intensive, the construction is difficult, and the requirements are high, resulting in high repair costs. Utility Model Content

[0003] The utility model provides a spraying device for tunnel kiln repair, which solves the problems that the current repair method is not firm and is easy to continue to fall off; local repair is time-consuming and labor-intensive, the construction is difficult and demanding, and the repair cost is high.

[0004] The utility model relates to a spraying device for repairing a tunnel kiln, comprising a spraying pipe parallel to the inner wall of the tunnel kiln, spray heads evenly arranged on the outer wall of the spraying pipe, the spraying pipe is connected to a spraying material pump, a base frame fixedly mounted on a kiln car on the top of a track in the tunnel kiln is fixed to the bottom of the spraying material pump, a slurry box is fixed to the top of the base frame, a slurry extraction pipe is fixed to the bottom of the slurry box, and the other end of the slurry extraction pipe is fixed to the spraying material pump.

[0005] As a preferred embodiment, the left and right ends of the base frame are provided with limit flanges attached to the outer side wall of the kiln car, and the base frame is fixed to the kiln car by fixing bolts, so as to facilitate rapid positioning of the base frame.

[0006] As a preferred embodiment, a reinforcing rod is fixed on the spraying pipe, a telescopic column is fixed to the middle bottom of the reinforcing rod, the bottom of the telescopic column is fixed to the base frame, and an adjusting bolt is arranged on the telescopic column. The height of the spraying pipe can be adjusted as needed.

[0007] As a preferred embodiment, a discharge pipe is fixed at the outlet of the spray material pump, a flow valve 1 is arranged on the discharge pipe, a delivery hose is fixed on the top of the discharge pipe, a connecting pipe is fixed on the spray pipe, the other end of the delivery hose is fixed to the connecting pipe, a return pipe is fixed on the discharge pipe below the flow valve 1, a mixing ring pipe is fixed on the inner wall of the slurry box, a circular array of inclined spray pipes is arranged on the inner wall of the mixing ring pipe, and a flow valve 2 is arranged on the return pipe. The slurry refluxed by the return pipe can be used to stir the material in the slurry box to reduce sedimentation and accumulation.

[0008] The utility model has the following beneficial effects:

[0009] By adopting this device, the surface of the refractory bricks of the kiln lining can be quickly sprayed with the help of the kiln car of the tunnel kiln. The construction technology is easy and has low construction difficulty. The application of spraying technology is more efficient than the previous brick replacement technology and reduces labor costs. The working surface of the refractory bricks after spraying becomes a whole after drying and sintering, which can greatly extend the service life of the refractory bricks. The refractory bricks after spraying have strong corrosion resistance, which avoids the refractory brick material from falling off and affecting the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a schematic diagram of the structure of the top of the mixing ring tube;

[0012] In the figure: 1. Tunnel kiln; 2. Spraying pipe; 3. Reinforcing rod; 4. Nozzle; 5. Discharge pipe; 6. Spray material pump; 7. Limit flange; 8. Kiln car; 9. Track; 10. Base frame; 11. Slurry box; 12. Slurry extraction pipe; 13. Mixing ring pipe; 14. Reflux pipe; 15. Telescopic column; 16. Delivery hose; 17. Connecting pipe; 18. Spraying pipe. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with embodiments.

[0014] Embodiment 1, as Figure 1 to Figure 2 As shown, the utility model is a spraying device for tunnel kiln repair, including a spraying pipe 2 parallel to the inner wall of the tunnel kiln 1, nozzles 4 are evenly arranged on the outer wall of the spraying pipe 2, the spraying pipe 2 is connected to a spray material pump 6, the bottom of the spray material pump 6 is fixed with a base frame 10 fixedly installed on the kiln car 8 at the top of the track 9 in the tunnel kiln 1, the top of the base frame 10 is fixed with a slurry box 11, the bottom of the slurry box 11 is fixed with a slurry extraction pipe 12, and the other end of the slurry extraction pipe 12 is fixed to the spray material pump 6.

[0015] During operation, the base frame 10 is fixed on the kiln car 8, and then the slurry made of high-temperature resistant spraying material is put into the slurry box 11, the spray material pump 6 is started, the kiln car 8 moves along the tunnel kiln 1, and the nozzle 4 on the spray pipe 2 evenly sprays the high-temperature resistant spraying material layer on the inner wall of the tunnel kiln 1. When the spraying is completed, the spray material pump 6 is turned off and the base frame 10 is removed. After drying and sintering, the high-temperature resistant spraying material layer becomes a whole, which can greatly extend the service life of the refractory bricks.

[0016] Embodiment 2, on the basis of embodiment 1, the left and right ends of the base frame 10 are provided with limit flanges 7 attached to the outer wall of the kiln car 8, and the base frame 10 is fixed to the kiln car 8 by fixing bolts. When the base frame 10 is installed, the limit flanges 7 are limited on both sides of the kiln car 8, and the position of the spray pipe 2 on the base frame 10 can be quickly located.

[0017] A reinforcing rod 3 is fixed on the spraying pipe 2, a telescopic column 15 is fixed to the middle bottom of the reinforcing rod 3, the bottom of the telescopic column 15 is fixed to the base frame 10, and an adjusting bolt is arranged on the telescopic column 15. Before working, the adjusting bolt can be loosened to adjust the extension height of the telescopic column 15 according to the height of the tunnel kiln 1 and the spraying requirements, and then the adjusting bolt can be tightened.

[0018] The outlet of the spray material pump 6 is fixed with a discharge pipe 5, a flow valve 1 is arranged on the discharge pipe 5, a delivery hose 16 is fixed on the top of the discharge pipe 5, a connecting pipe 17 is fixed on the spray pipe 2, the other end of the delivery hose 16 is fixed to the connecting pipe 17, a return pipe 14 is fixed on the discharge pipe 5 below the flow valve 1, a mixing ring pipe 13 is fixed on the inner wall of the slurry box 11, a circular array of inclined ejection pipes 18 is arranged on the inner wall of the mixing ring pipe 13, and a flow valve 2 is arranged on the return pipe 14. Before working, the opening and closing degree of the flow valve 1 and the flow valve 2 can be adjusted as needed.

[0019] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0020] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A spraying device for tunnel kiln repair, characterized in that: The invention comprises a spraying pipe (2) parallel to the inner wall of a tunnel kiln (1), nozzles (4) are evenly arranged on the outer wall of the spraying pipe (2), the spraying pipe (2) is connected to a spraying material pump (6), a bottom frame (10) fixedly mounted on a kiln car (8) at the top of a track (9) inside the tunnel kiln (1) is fixed at the bottom of the spraying material pump (6), a slurry box (11) is fixed at the top of the bottom frame (10), a slurry extraction pipe (12) is fixed at the bottom of the slurry box (11), and the other end of the slurry extraction pipe (12) is fixed to the spraying material pump (6).

2. The spraying device for tunnel kiln repair according to claim 1 is characterized in that: The left and right ends of the bottom frame (10) are provided with limiting flanges (7) attached to the outer side wall of the kiln car (8), and the bottom frame (10) is fixed to the kiln car (8) by fixing bolts.

3. The spraying device for tunnel kiln repair according to claim 2 is characterized in that: A reinforcing rod (3) is fixed on the spraying pipe (2), a telescopic column (15) is fixed on the middle bottom of the reinforcing rod (3), the bottom of the telescopic column (15) is fixed to the base frame (10), and an adjusting bolt is arranged on the telescopic column (15).

4. The spraying device for tunnel kiln repair according to claim 1 is characterized in that: A discharge pipe (5) is fixed to the outlet of the spray material pump (6), a flow valve 1 is provided on the discharge pipe (5), a delivery hose (16) is fixed to the top of the discharge pipe (5), a connecting pipe (17) is fixed to the spray pipe (2), the other end of the delivery hose (16) is fixed to the connecting pipe (17), a return pipe (14) is fixed to the discharge pipe (5) below the flow valve 1, a mixing ring pipe (13) is fixed to the inner wall of the slurry box (11), a circular array of inclined ejection pipes (18) is provided on the inner wall of the mixing ring pipe (13), and a flow valve 2 is provided on the return pipe (14).

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