Three-section three-level type coal distribution structure based on fuming furnace

Abstract

The three-section three-level type coal distribution structure comprises a powder inlet pipe, the lower portion of the powder inlet pipe is communicated with a first main flow pipe, first flow distribution pipes are arranged on the two sides of the lower portion of the first main flow pipe, and the lower portions of the first flow distribution pipes are communicated with a second main flow pipe. Second flow dividing pipes are arranged on the two sides of the lower portion of the second main flow pipe, the lower portions of the four second flow dividing pipes communicate with a flow collecting pipe, a plurality of nozzles distributed at equal intervals are arranged below the flow collecting pipe, and flange plates are arranged at the two ends of the first main flow pipe, the ends, away from the first main flow pipe, of the second main flow pipes and the two ends of the flow collecting pipe; the flange plate is provided with a blind plate matched with the flange plate. According to the coal distribution structure, the coal distribution equipment is divided into three sections and three stages, so that the uniformity and stability of pulverized coal and air volume are improved, blind plates are arranged on pipelines at the two ends of the three stages of the coal distribution equipment respectively, and accumulated coal in the coal distribution structure can be cleaned without disassembling the whole coal distribution equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of nonferrous metal smelting, in particular to a three-stage three-level coal distribution structure based on a fuming furnace. Background Art

[0002] Fuming furnace is a device that blows a mixture of air and pulverized coal into liquid slag to volatilize certain valuable metals in the slag in the form of metals, oxides or sulfides. Fuming furnace was originally a device for processing lead blast furnace slag. Now fuming furnace is also widely used in the smelting process of tinkim. With years of development, the production process system and equipment are becoming more and more perfect and mature. Among them, after the mixed injection of wind and coal, it needs to be distributed step by step through the wind and coal box before entering the fuming furnace, so as to evenly supply it to the fuming furnace, so that the fuming furnace can produce continuously and efficiently. The existing pulverized coal is distributed through an integrated coal-distributing device, which results in uneven distribution of coal and gas. Equipment failures often occur at both ends of the coal-distributing device due to blockage caused by coal accumulation, affecting the blowing effect of the fuming furnace. If the fuming furnace is shut down due to power outage or emergency, the inside of the coal-distributing device is filled with a large amount of pulverized coal. For normal production, the integrated coal-distributing device must be disassembled for coal cleaning. The operating efficiency of the integrated coal-distributing device directly affects the production efficiency of the fuming furnace. For this reason, we propose a three-stage and three-level coal-distributing structure based on the fuming furnace. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a three-stage three-level coal distribution structure based on a fuming furnace. The utility model solves the problems that the existing pulverized coal is distributed through an integrated coal distribution device, the coal and gas are unevenly distributed, and the two ends of the coal distribution device are often blocked due to coal accumulation, which affects the blowing effect of the fuming furnace. If the fuming furnace is shut down due to power failure or emergency shutdown, the inside of the coal distribution device is filled with a large amount of pulverized coal, and the integrated coal distribution device must be disassembled for coal cleaning for normal production; the operating efficiency of the integrated coal distribution device directly affects the production efficiency of the fuming furnace.

[0004] A three-stage three-level coal distribution structure based on a fuming furnace in the utility model includes a powder inlet pipe, three of which are provided. The powder inlet pipe is connected with a first main pipe at the bottom, first branch pipes are provided on both sides below the first main pipe, the first branch pipe is connected with a second main pipe at the bottom, second branch pipes are provided on both sides below the second main pipe, four of the second branch pipes are connected with a converging pipe at the bottom, a plurality of equidistantly arranged nozzles are provided below the converging pipe, flanges are provided at both ends of the first main pipe, an end of the second main pipe away from the first main pipe, and both ends of the converging pipe, and the flanges are provided with matching blind plates.

[0005] In the above solution, the flange and the blind plate are fixedly connected by stud bolts, and the size of the stud bolts is M24×60mm.

[0006] In the above scheme, a gear box is provided on one side of the powder inlet pipe, a motor is provided above the gear box, the rotating shaft of the motor passes through the gear box and is fixedly connected to the first bevel gear, the powder inlet pipe is located in the gear box and a shaft is inserted on one side, a second bevel gear meshing with the first bevel gear is provided on the shaft, one end of the shaft located in the powder inlet pipe is fixedly connected to a connecting ring, and a plurality of equidistantly arranged baffles are provided in the connecting ring.

[0007] In the above solution, the powder inlet pipe is a DN150 steel pipe.

[0008] In the above solution, the blind plate is a steel plate of DN200×20mm.

[0009] In the above solution, a graphite gasket is provided between the flange and the blind plate.

[0010] In the above solution, the nozzle is a DN40 coal outlet nozzle.

[0011] The advantages and beneficial effects of the utility model are as follows: the utility model provides a three-stage three-level coal distribution structure based on a fuming furnace, and the flow rate of the pulverized coal entering the coal distribution structure is buffered by adjusting the angle of the baffle plate, and the pulverized coal entering from the powder inlet pipe can be distributed through the first main pipe, and the pulverized coal in the first main pipe flows to both ends, so that the pulverized coal is distributed through the first diversion pipe. After the pulverized coal in the first diversion pipe enters the second main pipe, the pulverized coal flows to both ends of the second main pipe, and the pulverized coal entering the second main pipe is distributed again through the second diversion pipe, and the pulverized coal converges inside the converging pipe through the second diversion pipe, so that the pulverized coal can be sprayed out through the nozzle. This coal distribution structure divides the coal distribution equipment into three stages and three levels, and each stage of the pulverized coal is further divided into three levels to increase the uniformity and stability of the pulverized coal and the air volume, and blind plates are respectively arranged on the pipes at both ends of the three levels of the coal distribution equipment, so that the internal coal accumulation of the coal distribution structure can be cleaned without disassembling the coal equipment as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a partial cross-sectional view of the utility model;

[0015] Figure 3This is a schematic structural diagram of part A of the utility model.

[0016] In the figure: 1, powder inlet pipe 2, first main flow pipe 3, first branch pipe 4, second main flow pipe

[0017] 5. Second branch pipe 6. Converging pipe 7. Nozzle 8. Flange

[0018] 9. Blind plate 10. Stud bolt 11. Gear box 12. Motor

[0019] 13. first bevel gear 14. shaft 15. second bevel gear 16. connecting ring

[0020] 17. Baffle. DETAILED DESCRIPTION

[0021] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0022] like Figure 1-3 As shown, the utility model is a three-stage three-level coal distribution structure based on a fuming furnace, including a powder feeding pipe 1, wherein the powder feeding pipe 1 is provided with three, and the pulverized coal can enter the coal distribution structure through the powder feeding pipe 1, and the lower part of the powder feeding pipe 1 is connected with the first main flow pipe 2, and the lower two sides of the first main flow pipe 2 are provided with first branch pipes 3, and the pulverized coal entering from the powder feeding pipe 1 can be distributed through the first main flow pipe 2, and the pulverized coal in the first main flow pipe 2 flows to both ends, so that the pulverized coal is distributed through the first branch pipe 3, and the lower part of the first branch pipe 3 is connected with the second main flow pipe 4, and the lower two sides of the second main flow pipe 4 are provided with second branch pipes 5, and the pulverized coal in the first branch pipe 3 enters the second main flow pipe 4. Afterwards, the pulverized coal flows to the two ends of the second main flow pipe 4, and the pulverized coal enters the second main flow pipe 4 and is again distributed through the second branch pipe 5. The four second branch pipes 5 are connected to the confluence pipe 6 at the bottom, and a plurality of nozzles 7 arranged equidistantly are provided under the confluence pipe 6. The pulverized coal is converged inside the confluence pipe 6 through the second branch pipe 5, so that the pulverized coal can be sprayed out through the nozzle 7. Flanges 8 are provided at the two ends of the first main flow pipe 2, the end of the second main flow pipe 4 away from the first main flow pipe 2, and the two ends of the confluence pipe 6. The flange 8 is provided with a matching blind plate 9. The blind plate 9 can seal the flange 8. By disassembling the blind plate 9, the accumulated coal inside the coal distribution structure is easier to clean.

[0023] The flange 8 and the blind plate 9 are fixedly connected by stud bolts 10 , and the size of the stud bolts 10 is M24×60 mm. The provision of the stud bolts 10 facilitates installation and disassembly between the flange 8 and the blind plate 9 .

[0024] A gear box 11 is provided on one side of the powder inlet pipe 1, and a motor 12 is provided above the gear box 11. The rotating shaft of the motor 12 passes through the gear box 11 and is fixedly connected to the first bevel gear 13. A shaft rod 14 is inserted on one side of the powder inlet pipe 1 located in the gear box 11, and a second bevel gear 15 meshing with the first bevel gear 13 is provided on the shaft rod 14. One end of the shaft rod 14 located in the powder inlet pipe 1 is fixedly connected to a connecting ring 16, and a plurality of equidistantly arranged baffle plates 17 are provided in the connecting ring 16. When the motor 12 is working, the motor 12 drives the first bevel gear 13 to rotate, and the second bevel gear 15 meshing with the first bevel gear 13 also rotates accordingly, and the second bevel gear 15 drives the shaft rod 14 to rotate, and the connecting ring 16 also rotates accordingly through the transmission of the shaft rod 14. During the rotation of the connecting ring 16, the connecting ring 16 can adjust the angle of the baffle plate 17. By adjusting the angle of the baffle plate 17, the flow rate of the pulverized coal entering the coal distribution structure is buffered.

[0025] The powder inlet pipe 1 is a DN150 steel pipe.

[0026] The blind plate 9 is a steel plate of DN200×20mm.

[0027] A graphite gasket is provided between the flange 8 and the blind plate 9 , and the provision of the graphite gasket effectively increases the sealing between the flange 8 and the blind plate 9 .

[0028] The nozzle 7 is a DN40 coal outlet nozzle.

[0029] Specifically, in the present invention, when the motor 12 is working, the motor 12 drives the first bevel gear 13 to rotate, and the second bevel gear 15 meshing with the first bevel gear 13 also rotates accordingly, and the second bevel gear 15 drives the shaft rod 14 to rotate, and the connecting ring 16 is also rotated through the transmission of the shaft rod 14. During the rotation of the connecting ring 16, the connecting ring 16 can adjust the angle of the baffle plate 17. By adjusting the angle of the baffle plate 17, the flow rate of the pulverized coal entering the coal separation structure is buffered, and the pulverized coal entering from the powder inlet pipe 1 can be separated through the first mainstream pipe 2, and the pulverized coal in the first mainstream pipe 2 flows to both ends, so that the pulverized coal can flow through the main flow pipe 2. The coal is separated through the first branch pipe 3. After the pulverized coal in the first branch pipe 3 enters the second main pipe 4, the pulverized coal flows to the two ends of the second main pipe 4. After entering the second main pipe 4, the pulverized coal is separated again through the second branch pipe 5. The pulverized coal converges inside the converging pipe 6 through the second branch pipe 5, so that the pulverized coal can be sprayed out through the nozzle 7. The coal separation structure divides the coal separation equipment into three sections and three levels. Each section of the pulverized coal is further divided into three levels to increase the uniformity and stability of the pulverized coal and air volume. Blind plates 9 are respectively arranged on the pipelines at both ends of the three levels of the coal separation equipment. The flange 8 is sealed with the blind plate 9, so that the coal separation structure can be cleaned without disassembling the coal equipment as a whole, and the internal coal accumulation can be cleaned.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-stage three-level coal distribution structure based on a fuming furnace, comprising a powder inlet pipe (1), characterized in that: The powder inlet pipes (1) are provided with three. The bottom of the powder inlet pipe (1) is connected with the first main flow pipe (2). The first main flow pipe (2) is provided with first branch pipes (3) on both sides. The bottom of the first branch pipe (3) is connected with the second main flow pipe (4). The bottom of the second main flow pipe (4) is provided with second branch pipes (5) on both sides. The four second branch pipes (5) are connected with the confluence pipe (6) at the bottom. The confluence pipe (6) is provided with a plurality of nozzles (7) arranged at equal distances. Flanges (8) are provided at both ends of the first main flow pipe (2), at one end of the second main flow pipe (4) away from the first main flow pipe (2), and at both ends of the confluence pipe (6). The flanges (8) are provided with matching blind plates (9).

2. The three-stage three-level coal distribution structure based on the fuming furnace according to claim 1 is characterized in that: The flange (8) and the blind plate (9) are fixedly connected via stud bolts (10), and the size of the stud bolts (10) is M24×60 mm.

3. The three-stage three-level coal distribution structure based on the fuming furnace according to claim 1 is characterized in that: A gear box (11) is provided on one side of the powder inlet pipe (1), a motor (12) is provided above the gear box (11), a rotating shaft of the motor (12) passes through the gear box (11) and is fixedly connected to a first bevel gear (13), a shaft (14) is inserted into one side of the powder inlet pipe (1) located in the gear box (11), a second bevel gear (15) meshing with the first bevel gear (13) is provided on the shaft (14), one end of the shaft (14) located in the powder inlet pipe (1) is fixedly connected to a connecting ring (16), and a plurality of baffle plates (17) arranged at equal intervals are provided in the connecting ring (16).

4. The three-stage three-level coal distribution structure based on the fuming furnace according to claim 1 is characterized in that: The powder inlet pipe (1) is a DN150 steel pipe.

5. The three-stage three-level coal distribution structure based on the fuming furnace according to claim 1 is characterized in that: The blind plate (9) is a steel plate with a size of DN200×20 mm.

6. The three-stage three-level coal distribution structure based on the fuming furnace according to claim 1 is characterized in that: A graphite gasket is provided between the flange (8) and the blind plate (9).

7. The three-stage three-level coal distribution structure based on the fuming furnace according to claim 1 is characterized in that: The nozzle (7) is a DN40 coal outlet nozzle.

Images