CN201031196Y - Powder conveying and blowing device for float glass kiln - Google Patents

Abstract

The utility model relates to a powder conveying blowing device for a float-glass kiln, belonging to the application in the float-glass kiln, and is characterized in that a dust feed pipeline (1) is connected with a pollen cabin (3), a fluidizer (23) is installed on the pollen cabin (3), the pollen cabin (3) is connected with a powder eccentricity screen (6) through a first blanking pipe (5), the powder eccentricity screen (6) is connected with a powder blowing tank (9) through a second blanking pipe (7), the bottom of the powder blowing tank (9) is connected with a dusting pipeline (11) through a fluidization conveyer (10), the other end of the dusting pipeline (11) is connected with a powder distributor (16), the other end of the powder distributor (16) is connected with a powder blowing pipe (17), and an outlet of the powder blowing pipe (17) is connected with a powder blow gun (18). The powder conveying system of the device is stable in blowing, the powder is evenly mixed with air and is fully burnt, the power of each blow gun is evenly distributed, and the fire-invasion length of the powder in the float-glass kiln can be adjusted.

Description

Powder conveying and blowing device for float glass kiln

technical field

The utility model relates to the field of flat glass manufacturing, in particular to the application in a float glass kiln.

Background technique

At present, domestic float glass kilns are mainly heated by injecting heavy oil. In order to save energy and reduce consumption, domestic users have been looking for coal powder and petroleum coke powder to replace heavy oil. The equipment for blowing powder mainly adopts a powder storage bin and a powder blowing tank. A screw feeder is installed at the bottom of the powder blowing tank, and a blower is used to blow the powder into the float glass kiln through the blowing pipe. The injection main pipe is divided into several injection branch pipes to distribute the powder. When this process injects powder into the float glass kiln, the injection process is discontinuous and unstable, and it is easy to generate pulses. The air cannot be completely mixed, the powder is incompletely burned and the temperature in the glass melting furnace cannot be controlled, resulting in a decline in the quality of the finished glass.

Contents of the invention

The technical problem to be solved by the utility model is: to provide a powder conveying and blowing device for a float glass kiln, the powder conveying system of the device is stable in blowing, the powder and air are mixed evenly, the powder is fully burned, The powder distribution of each spray gun is uniform and the length of the powder fire trap in the float glass kiln is adjustable.

The technical scheme of the utility model is: the device includes a powder delivery pipeline 1, a powder storage bin 3, a first feeding pipe 5, a second feeding pipe 7, a powder injection tank 9, a powder injection pipeline 11, and an injection branch pipe 17 and a powder spray gun 18, characterized in that: the powder delivery pipeline 1 is connected to the powder storage bin 3, and a fluidization device 23 is installed on the powder storage bin 3, and the powder storage bin 3 is connected to the powder material through the first feeding pipe 5 The eccentric sieve 6 and the powder eccentric sieve 6 are connected to the powder injection tank 9 through the second feeding pipe 7, and the powder injection tank 9 is connected to the powder injection pipeline 11 through the fluidized conveyor 10, and the other part of the powder injection pipeline 11 One end is connected to the powder material distributor 16, and the other end of the powder material distributor 16 is connected with a powder material injection pipe 17, and the outlet of the powder material injection pipe 17 is connected with a powder material spray gun 18.

In this device, a mixer 28 and a constant velocity device 15 are connected between the powder distributor 16 and the powder injection pipeline 11 .

In this device, the geometric lengths of the injection branch pipes 17 are equal, and the injection branch pipes 17 are connected with a fire sink length adjustment pipe 26 .

Compared with the traditional float glass kiln powder injection system, the main advantages of this device are:

(1) The powder is conveyed by suspension fluidization. The powder conveying system sprays continuously, stably and without pulsation. The powder is fully mixed with the conveying medium (compressed air or nitrogen) in the fluidized conveyer. Adjust the amount of fluidizing gas to ensure that the mixing ratio of powder and air can be adjusted, the powder has good combustion performance in the float glass kiln, and the powder burns fully.

(2) The powder is transported under pressure in the injection branch pipe, and the length of the combustion flame of the powder in the float glass kiln can be adjusted by adjusting the compressed air flow.

(3) The cone of the powder storage bin is equipped with fluidization facilities, so that the powder material can be discharged smoothly without arching or clogging.

(4) The lower part of the powder storage bin is equipped with an eccentric powder sieve to screen out impurities in the powder and prevent the powder spraying pipeline from being blocked.

(5) The powder injection system adopts a uniform speed device, a powder distributor and measures to ensure that the geometric distance of each injection branch pipe is equal, so that the powder distribution and injection of each spray gun are uniform.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Explanation of symbols in the figure: 1. Powder conveying pipeline, 2. Dust collector on top of warehouse, 3. Powder storage bin, 4. Fluidization pipeline of powder storage bin, 5. First feeding pipe, 6. Powder eccentric screen, 7 .Second feeding pipe, 8. Rubber compensator, 9. Powder injection tank, 10. Fluidizing conveyor, 11. Powder spraying pipeline, 12. Pressurizing pipeline, 13. Fluidizing pipeline, 14. Discharging pipeline , 15. Uniform speed device, 16. Powder distributor, 17. Injection branch pipe, 18. Powder spray gun, 19. Diffuse filter, 20. Fluidizing nozzle, 23. Fluidizing device, 24. Load cell, 25 .Purge pipeline, 26. Fire sink length adjustment pipeline, 27. Safety valve filter, 28 Mixer, 32 Float glass kiln.

Figure 2 is a schematic diagram of the upper discharge fluidized conveying structure.

Fig. 3 is a schematic diagram of the fluidized conveying structure of the bottom discharge.

FIG. 4 is a schematic structural diagram of the mixer 28 .

Detailed ways

Structural features of powder conveying and blowing device for float glass kiln:

As shown in Figure 1, the device includes a powder delivery pipeline 1, a powder storage bin 3, a first feeding pipe 5, a second feeding pipe 7, a powder injection tank 9, a powder injection pipeline 11, an injection branch pipe 17 and The powder spray gun 18 is characterized in that: the powder delivery pipeline 1 is connected to the powder storage bin 3, a fluidization device 23 is installed on the powder storage bin 3, and the powder storage bin 3 is connected to the powder eccentric sieve through the first feeding pipe 5 6. The powder eccentric sieve 6 is connected to the powder injection tank 9 through the second feeding pipe 7, the powder injection tank 9 is connected to the powder injection pipeline 11 through the fluidized conveyor 10, and the other end of the powder injection pipeline 11 is connected to To the powder material distributor 16, the other end of the powder material distributor 16 is connected with a powder material injection pipe 17, and the outlet of the powder material injection pipe 17 is connected with a powder material spray gun 18.

Description of each device in the installation:

The powder storage bin 3 is made of a steel structure with a smooth inner wall, and the upper part is provided with a safety explosion-proof valve interface and an inspection hole.

The fluidization device 23 is installed on the lower cone of the powder storage bin 3. The function of the fluidization device 23 is to make the powder in a fluidized state, which is beneficial for the powder to fall from the powder storage bin 3 into the powder injection tank 9. The two ports of the fluidizing pipe 4 are respectively connected to the bottom of the fluidizing device 23 and the powder storage bin 3 . The main effect of fluidization pipe 4 is to eliminate coal in the powder storage bin shed.

The top of powder storage bin 3 can be provided with dust removal filter 2, and dust removal filter 2 comprises housing, pulse injection valve, dust removal filter cloth, keel and piping. The dust filter 2 can effectively remove the dust of the powder.

The powder eccentric screen 6 includes a housing, a screen, an eccentric shaft, a transmission device and a hand hole. The main function is to remove sawdust and other sundries in the powder to prevent the powder spraying pipeline from being blocked.

A rubber compensator 8 can be connected between the second feeding pipe 7 and the powder injection tank 9, and the rubber compensator 8 can eliminate the blind plate force of the pipeline to ensure accurate weighing.

The powder injection tank 9 is a pressure vessel, and the upper part of the tank body is equipped with a pressurization pipeline 12, a release filter 19, a safety valve filter 27, and a fluidization nozzle 20 is installed on the lower cone of the powder injection tank 9 to fluidize The nozzle 20 is connected to the fluidizing conduit 13 . The fluidization gas is transported into the fluidization nozzle 20 through the fluidization pipeline 13, so that the powder in the powder injection tank 9 is in a suspended state, which is beneficial to the transportation of the powder. The upper part of the release filter 19 is connected to the powder storage bin 3 through the release pipeline 14 . The effects of the safety valve filter 27 and the release filter 19 are to reduce the powder content in the discharge gas, which is beneficial to environmental protection. The tank body upper edge of powder injection tank 9 is also equipped with weighing sensor 24.

The fluidized conveyor 10 includes a powder fluidized bed, a gas distribution device and piping. The main function of the fluidized conveyor is to make the powder form a suspended state, which helps to spray the powder smoothly. In addition, the fluidized conveyor 10 is divided into two kinds of fluidized fluidized conveyors: upper discharge and lower discharge according to different structural forms. The structure of conveying: the structure of upper discharge fluidized conveying is shown in Figure 2. The upper interface 29 of the fluidized conveyor tank 21 is connected to the bottom of the powder injection tank 9, and the middle or upper part of the fluidized conveyor tank 21 A powder outlet 30 is installed, and the powder outlet 30 is connected with the powder spraying pipeline 11. The lower part of the fluidized conveyor tank 21 is equipped with a compressed air inlet 31, and the compressed air inlet 31 is connected with the fluidized conveying pipe 13; As shown in Figure 3, the upper interface 29 of the fluidized conveyor tank 21 is connected to the bottom of the powder injection tank 9, and the bottom of the fluidized conveyor tank 22 is equipped with a powder outlet 30, and the powder outlet 30 is connected to the bottom of the fluidized conveyor tank 22. The powder spraying pipeline 11 is connected to each other, and a compressed air inlet 31 is installed in the middle of the tank body 22 of the fluidized conveyor, and the compressed air inlet 31 is connected to the fluidized conveying pipe 13 .

The upper discharge fluidized conveying structure has the advantages of smooth powder delivery and high conveying concentration, but the height of the equipment is relatively high, and there are certain requirements for the layout space; the lower discharging fluidized conveying structure adopts relatively simple equipment and takes up a lot of space. Small and easy to arrange, but the stability of powder delivery is slightly poor, which can be solved by auxiliary means. The powder is fully mixed with the conveying medium (compressed air or nitrogen) in the fluidized conveyor 10, and the amount of fluidized gas is adjusted according to the amount of powder sprayed to ensure that the mixing ratio of the powder and air can be adjusted. The powder is in the float glass kiln The combustion performance is good, and the powder is fully burned.

The purge pipeline 25 is connected on the powder injection pipeline 11, and the main function of the purge pipeline 25 is to prevent the powder delivery pipeline from clogging or to eliminate pipeline clogging. The gas source used is compressed air or nitrogen.

The powder material distributor 16 is made of wear-resistant material. The inside is equipped with a cone for evenly distributing powder material, and ceramic wear-resistant pipes are installed on the upper part to ensure the distribution accuracy of each injection branch pipe, and the distribution error is ≤±5%.

The mixer 28 and the uniform speed device 15 can be connected between the powder injection pipeline 11 and the powder material distributor 16. The mixer 28 can promote the sufficient mixing of the powder material, and the uniform speed device 15 can improve the flow state of the powder material, which is conducive to uniform spraying and eliminates pulsation. The structure of the mixer 28 is shown in FIG. 4 . The mixer 28 is provided with a material inlet 33, a material outlet 34 and an air inlet 35. The mixer 28 is provided with a fluidizing air chamber inside, which plays a role of secondary mixing and can control the flow rate of powder spraying.

The flame length adjustment pipe 26 is directly connected to the injection branch pipe 17, and the compressed air enters the injection branch pipe 17 through the flame length adjustment pipe 26. The powder is transported under pressure in the injection branch pipe 17, and the combustion flame length of the powder in the float glass kiln can be adjusted by adjusting the flow rate of the compressed air. The geometric lengths of all injection branches 17 are equal.

Powder spray gun 18: a wear-resistant ceramic spray gun or a stainless steel tube spray gun for blast furnace powder spraying.

working principle:

As shown in Figure 1, the pulverized coal is transported to the powder storage bin 3 through the powder delivery pipeline 1, and the conveyed gas is discharged through the dust collector 2 on the top of the bin. After the powder in the powder storage bin 3 is fluidized by the cone fluidization device of the powder storage bin, it is discharged to the powder eccentric sieve 6 through the first feeding pipe 5, and the powder is filtered through the powder eccentric sieve 6 and then passed through the second The material pipe 7 and the rubber compensator 8 are discharged to the powder injection tank 9, and the powder in the powder injection tank 9 is pressurized through the pressure-charging pipeline 12 and fluidized through the fluidized conveyor 10 at the bottom, and then passed through the Powder spraying pipe 11 and the mixer 28 on it and the constant speed device 15 are delivered to the powder material distributor 16, and the powder material distributor 16 is evenly distributed to each injection branch pipe 17, and each injection branch pipe 17 has the same length. Then the powder is sprayed into the float glass kiln 32 by the injection branch pipe 17 and the powder spray gun 18, and every can of powder is sprayed for 20 minutes. After the blowing is completed, the powder blowing tank releases the pressure through the release pipe 14, and after the pressure release is completed, the material is loaded, pressurized, waited, and blown, and the system circulates and operates continuously. The working principle when the powder is petroleum coke powder is exactly the same as that of the powder.

The system adopts a closed powder storage bin and a powder injection tank. The powder is always in a closed environment from the powder delivery to the injection system ^. Nitrogen or compressed air can be used for blowing, no other harmful gases are discharged into the atmosphere during production, and the environmental protection effect is good.

Claims (10)

1. Powder conveying and blowing device for float glass kiln, including powder conveying pipeline (1), powder storage bin (3), first feeding pipe (5), second feeding pipe (7), powder Material injection tank (9), powder injection pipeline (11), injection branch pipe (17) and powder material spray gun (18), it is characterized in that: powder delivery pipeline (1) is connected to powder storage bin (3), powder storage The bin (3) is equipped with a fluidization device (23), the powder storage bin (3) is connected to the powder eccentric sieve (6) through the first feeding pipe (5), and the powder eccentric sieve (6) passes through the second lower The feed pipe (7) is connected to the powder injection tank (9), and the bottom of the powder injection tank (9) is connected to the powder injection pipeline (11) through the fluidized conveyor (10), and the other part of the powder injection pipeline (11) One end is connected to powder material distributor (16), and the other end of powder material distributor (16) is connected with powder material injection pipe (17), and the outlet of powder material injection pipe (17) is connected with powder material spray gun (18). 2. The powder conveying and blowing device for a float glass kiln according to claim 1, characterized in that: the top of the powder storage bin (3) is equipped with a filter dust collector (2) on the top of the bin. 3. The powder conveying and blowing device for a float glass kiln as claimed in claim 1, characterized in that: said second feeding pipe (7) and the powder blowing tank (9) are connected with Rubber compensator (8). 4. The powder conveying and blowing device for a float glass kiln as claimed in claim 1, characterized in that: the fluidization device (23) is installed in the lower cone of the powder storage bin (3), and fluidized The two ports of the pipe (4) are respectively connected to the bottom of the fluidization device (23) and the powder storage bin (3). 5. The powder conveying and blowing device for a float glass kiln as claimed in claim 1, characterized in that: said powder blowing tank (9) is equipped with a pressurized pipeline (12), a release filter device (19), safety valve filter (27), weighing sensor (24), fluidizing nozzle 20, and the release filter (19) is connected to the powder storage bin (3) through the release pipeline (14), and the fluidizing nozzle ( 20) Link to each other with the fluidization pipeline (13). 6. The powder conveying and blowing device for a float glass kiln according to claim 1, characterized in that: a mixer (28) is connected between the powder distributor (16) and the powder spraying pipeline (11) ) and uniform speed device (15). 7. The powder conveying and blowing device for a float glass kiln according to claim 1, characterized in that: said powder spraying pipeline (11) is connected with a purge pipeline (25). 8. The powder conveying and blowing device for a float glass kiln according to claim 1, characterized in that: the geometric lengths of each of the blowing branch pipes (17) are equal, and the blowing branch pipes (17) are connected with Fire trap length adjustment pipe (26). 9. The powder conveying and blowing device for a float glass kiln according to claim 1, characterized in that, the fluidized conveyor (10) adopts the structure of upper discharge fluidized conveying, and the fluidized conveyor The upper interface (29) of the tank body (21) is connected with the bottom of the powder material injection tank (9), and the middle or upper part of the fluidized conveyor tank body (21) is equipped with a powder material outlet (30), and the powder material outlet (30 ) is connected with the powder spraying pipeline (11), and the bottom of the fluidized conveyor tank body (21) is equipped with a compressed air inlet (31), and the compressed air inlet (31) is connected with the fluidized conveying pipe (13). 10. The powder conveying and blowing device for float glass kiln according to claim 1, characterized in that, the fluidized conveyor (10) adopts the structure of fluidized conveying of the bottom discharge, and the fluidized conveyor The upper interface (29) of the tank body (22) links to each other with the bottom of the powder material injection tank (9), and the bottom of the fluidized conveyor tank body (22) is equipped with a powder material outlet (30), and the powder material outlet (30) is connected to the bottom of the tank body (22). The powder spraying pipeline (11) is connected to each other, and the middle part of the fluidized conveyor tank body (22) is equipped with a compressed air inlet (31), and the compressed air inlet (31) is connected to the fluidized conveying pipe (13).

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