Spray gun structure for side-top blowing reinforced smelting furnace

Abstract

The utility model provides a spray gun structure for a side-top blowing reinforced smelting furnace, and solves the problems that a conventional spray gun can only be mounted at the top of the smelting furnace for top blowing or mounted on the side surface of the smelting furnace for side blowing, and side blowing and top blowing are inconvenient to switch according to requirements so as to effectively control the temperature in the furnace and the reaction process. The heating furnace comprises a furnace body, a furnace opening is formed in the top of the furnace body; the furnace body is provided with a plurality of slotted holes which are through inside and outside, and the slotted holes are arranged in an inclined manner with low inside and high outside; a plurality of spray guns are arranged on the furnace body, each spray gun comprises a gun barrel rotationally arranged in the corresponding groove hole in a penetrating mode, the two ends of each gun barrel penetrate out of the corresponding groove hole, and a discharging pipe extending in the vertical direction is arranged at the bottom end of each gun barrel. The device can be switched between side blowing and top blowing according to the smelting process and production requirements so as to effectively control the temperature in the furnace and the reaction process, meanwhile, the device is simple in structure, wide in application range and convenient to install, and the production and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting furnace spray guns, in particular to a spray gun structure for a side-top blowing enhanced smelting furnace. Background Art

[0002] A spray gun is a device that uses liquid or compressed air to release quickly as power. During smelting, a spray gun is usually used to input oxygen, coal powder, natural gas and other gases and fuels into the smelting furnace to improve smelting efficiency. In the prior art, the smelting furnace is usually equipped with spray guns in two ways: side blowing and top blowing. Side blowing can effectively improve the stirring and mixing of materials in the furnace, promote the smelting reaction, and help accelerate the combustion and reduction process. Top blowing can form a relatively strong convection in the furnace, which is conducive to increasing the rate of the smelting reaction and improving the smelting efficiency.

[0003] Since there are obvious differences in the processes between side blowing and top blowing, and due to the structure and cost limitations of the smelting furnace, conventional spray guns can only be installed on the top of the smelting furnace for top blowing, or on the side of the smelting furnace for side blowing. It is not convenient to switch between side blowing and top blowing according to the smelting process and production needs to achieve effective control of the temperature and reaction process in the furnace. Utility Model Content

[0004] In order to solve the problem that the conventional spray guns existing in the background technology can only be installed on the top of the smelting furnace for top blowing, or installed on the side of the smelting furnace for side blowing, and it is not convenient to switch between side blowing and top blowing according to needs to achieve effective control of the temperature and reaction process in the furnace, the utility model proposes a spray gun structure for a side-top blowing enhanced smelting furnace.

[0005] The technical solution of the utility model is: a spray gun structure for a side-top blowing enhanced smelting furnace, comprising a furnace body;

[0006] A furnace opening is provided on the top of the furnace body;

[0007] The furnace body is provided with a plurality of slots which are transparent inside and outside, and the slots are arranged in an inclined manner with the inside lower and the outside higher;

[0008] A plurality of spray guns are arranged on the furnace body, and the spray guns include a gun barrel that is rotatably inserted into the slot, both ends of the gun barrel are inserted into the slot, and a discharge pipe extending in the up-down direction is arranged at the bottom of the gun barrel, and the angle between the gun barrel and the discharge pipe is an obtuse angle greater than 135°, and the discharge pipe is used to adjust the spray angle;

[0009] The furnace body is provided with a driving mechanism, which is used to drive the gun barrel to rotate so as to change the inclination angle of the discharge pipe.

[0010] Preferably, a connecting pipe is fixedly provided between the gun barrel and the discharge pipe, the connecting pipe is horizontally arranged along the radial direction of the furnace body, the angle between the connecting pipe and the gun barrel is an obtuse angle greater than 135°, and the connecting pipe and the discharge pipe are arranged perpendicular to each other.

[0011] Preferably, four spray guns and four slots are provided, and the four spray guns and the four slots are arranged at equal intervals along the circumferential direction of the furnace body.

[0012] Preferably, a mounting plate is fixedly sleeved on the furnace body, two first shaft seats which are spaced apart and correspond to each other are fixedly provided on the left and right sides of the mounting plate, the driving mechanism comprises a first rotating shaft which is rotatably provided in the two first shaft seats, two second shaft seats which are spaced apart and correspond to each other are fixedly provided on the front and rear sides of the mounting plate, and the driving member comprises a second rotating shaft which is rotatably provided in the two second shaft seats;

[0013] The top ends of the four gun barrels are all fixed with worm gears, the middle parts of the two first rotating shafts and the two second rotating shafts are all fixed with worm screws, and the four worm gears are respectively meshed with the four worm screws;

[0014] A driving device is provided on the mounting plate, and the driving device is used for driving the two first rotating shafts and the two second rotating shafts to rotate.

[0015] Preferably, the driving device comprises a driving motor fixedly mounted on the mounting plate, and the front end of the first rotating shaft on the left side is fixedly connected to the output shaft of the driving motor;

[0016] The front and rear ends of the first rotating shaft both pass through the first shaft seat and are fixed with a first bevel gear, the left and right ends of the second rotating shaft both pass through the second shaft seat and are fixed with a second bevel gear, and the first bevel gear and the second bevel gear at the adjacent end of the first rotating shaft and the second rotating shaft are meshed.

[0017] Preferably, a valve core is fixedly provided at the top end of the gun barrel, the valve core is a spherical structure, a first through hole which is transparent from top to bottom is opened in the valve core, the valve core is communicated with the gun barrel through the first through hole, a valve seat is rotatably sleeved on the valve core, the valve seat is a hollow spherical structure, the top end of the gun barrel passes through the valve seat and is fixed on the valve core, and the gun barrel is communicated with the inside of the valve core, a connecting rod is provided on the valve seat, and one end of the connecting rod which is away from the valve seat is fixed on the furnace body;

[0018] A feed pipe is fixedly arranged at the top of the valve seat, a second through hole which is transparent up and down is opened on the top of the valve seat, the second through hole is connected with the first through hole up and down, and the valve seat is connected with the feed pipe through the second through hole.

[0019] Preferably, a circulation pipe hole extending along the length direction of the spray gun is provided in the spray gun, and the circulation pipe hole includes a water inlet and a water outlet, and the water inlet and the water outlet are both located at the top end of the spray gun;

[0020] Two circulating water pipes are fixedly provided at the top end of the spray gun, and the two circulating water pipes are respectively connected to the water inlet and the water outlet of the circulating pipe hole. One end of the circulating water pipe away from the spray gun is fixedly connected to a circulating water pump, and a cooling water tank is provided on the circulating water pump.

[0021] Preferably, a heat-insulating protective sleeve is fixedly provided at the bottom end of the discharge pipe, and a gas hole for spraying gas and fuel is opened at the bottom end of the heat-insulating protective sleeve.

[0022] Advantages of the utility model: the utility model inserts the barrel of the spray gun into the furnace body at an inclined angle, and vertically arranges a discharge pipe at the bottom end of the barrel, so that the gas and fuel in the discharge pipe are sprayed out at a vertical angle to achieve the purpose of top blowing, and drives the barrel to rotate 180° through a driving component, so that the angle between the discharge pipe and the horizontal plane is an acute angle less than 90°, so that the gas and fuel in the discharge pipe are sprayed out at an inclined angle to achieve the purpose of side blowing.

[0023] The utility model can switch between side blowing and top blowing according to the smelting process and production requirements to achieve effective control of the temperature and reaction process in the furnace. At the same time, the device has a simple structure, a wide range of applications, and is easy to install, reducing production and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a structural front cross-sectional view of the furnace body of the utility model;

[0027] Figure 3 This is a structural front cross-sectional view of the furnace body of the utility model when side-blowing;

[0028] Figure 4 It is a structural front cross-sectional view of the spray gun of the utility model;

[0029] Figure 5 For this utility model Figure 1 A magnified view of the structure at center;

[0030] Figure 6 For this utility model Figure 1 Enlarged view of the structure at point B in the middle.

[0031] In the figure: 1. furnace body; 2. furnace mouth; 3. spray gun; 31. gun barrel; 32. connecting pipe; 33. discharge pipe; 4. mounting plate; 5. first shaft seat; 6. first rotating shaft; 7. second shaft seat; 8. second rotating shaft; 9. worm gear; 10. worm; 11. first bevel helical gear; 12. second bevel helical gear; 13. drive motor; 14. valve core; 15. valve seat; 16. connecting rod; 17. feed pipe; 18. circulation pipe hole; 19. circulation water pipe; 20. circulation water pump; 21. thermal insulation protective cover. DETAILED DESCRIPTION

[0032] 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.

[0033] Example 1: A lance structure for a side-top-blowing enhanced smelting furnace, such as Figure 1-6 As shown, the furnace body 1 includes a furnace mouth 2 on the top of the furnace body 1; the furnace body 1 is provided with four slots that are transparent inside and outside, and the slots are arranged at an angle with the inside lower and the outside higher; the furnace body 1 is provided with four spray guns 3, and the four spray guns 3 and the slots are arranged equidistantly along the circumferential direction of the furnace body 1. The four spray guns 3 can cover different areas in the furnace body 1, so that the materials in the furnace body 1 can be evenly processed; the spray gun 3 includes a gun barrel 31 that is rotatably inserted into the slot, and both ends of the gun barrel 31 pass through the slot, and the bottom end of the gun barrel 31 is provided with The discharge pipe 33 extends in the up-down direction, and the angle between the gun barrel 31 and the discharge pipe 33 is an obtuse angle greater than 135°, and the discharge pipe 33 is used to adjust the injection angle; a heat-insulating protective sleeve 21 is fixedly provided at the bottom end of the discharge pipe 33, and air holes for gas and fuel to be sprayed out are opened at the bottom end of the heat-insulating protective sleeve 21; the heat-insulating protective sleeve 21 is made of alumina ceramics, and has excellent high-temperature resistance. At the same time, compared with other high-temperature resistant materials, alumina ceramics have lower thermal conductivity and can protect the end of the discharge pipe 33.

[0034] A connecting pipe 32 is fixed between the gun barrel 31 and the discharge pipe 33. The connecting pipe 32 is horizontally arranged along the radial direction of the furnace body 1. The angle between the connecting pipe 32 and the gun barrel 31 is an obtuse angle greater than 135°. The connecting pipe 32 and the discharge pipe 33 are arranged perpendicular to each other.

[0035] By arranging a connecting pipe 32 between the gun barrel 31 and the discharge pipe 33, when the discharge pipe 33 is at a vertical angle, it can be away from the inner wall of the furnace body 1 and close to the center of the furnace body 1, so as to better achieve uniform mixing and heating of the charge and further improve the rate of the smelting reaction; when the gun barrel 31 rotates 180° and the discharge pipe 33 is at an inclined angle, the connecting pipe 32 can make the discharge pipe 33 close to the inner wall of the furnace body 1 and away from the center of the furnace body 1, so as to increase the range of the side blowing.

[0036] The furnace body 1 is provided with a driving mechanism for driving the gun barrel 31 to rotate so as to change the inclination angle of the discharge pipe 33. Specifically, a mounting plate 4 is fixedly sleeved on the furnace body 1, and two first shaft seats 5 arranged at intervals front and back and corresponding to each other are fixedly provided on the left and right sides of the mounting plate 4. The driving mechanism includes a first rotating shaft 6 that rotates together and passes through the two first shaft seats 5, and two second shaft seats 7 that are arranged at intervals left and right and corresponding to each other are fixedly provided on the front and back sides of the mounting plate 4. The driving member includes a second rotating shaft 8 that rotates together and passes through the two second shaft seats 7; worm gears 9 are fixedly provided at the top ends of the four gun barrels 31, and worms 10 are fixedly provided in the middle of the two first rotating shafts 6 and the two second rotating shafts 8, and the four worm gears 9 are respectively engaged with the four worms 10.

[0037] A driving device for driving the two first rotating shafts 6 and the two second rotating shafts 8 to rotate is provided on the mounting plate 4. Specifically, the driving device includes a driving motor 13 fixedly mounted on the mounting plate 4, and the front end of the first rotating shaft 6 on the left side is fixedly connected to the output shaft of the driving motor 13; the front and rear ends of the first rotating shaft 6 both pass through the first shaft seat 5 and are fixedly provided with a first bevel helical gear 11, and the left and right ends of the second rotating shaft 8 both pass through the second shaft seat 7 and are fixedly provided with a second bevel helical gear 12, and the first bevel helical gear 11 and the second bevel helical gear 12 at the adjacent ends of the first rotating shaft 6 and the second rotating shaft 8 are meshed.

[0038] Start the drive motor 13, and the output shaft of the drive motor 13 drives the first rotating shaft 6 located on the left side to rotate. The first rotating shaft 6 drives the second bevel gears 12 and the second rotating shaft 8 on the front and rear sides to rotate synchronously through the first bevel gears 11 at both ends, and then drives the first bevel gear 11 and the first rotating shaft 6 located on the right side to rotate, so that the two first rotating shafts 6 and the two second rotating shafts 8 can rotate synchronously. The two first rotating shafts 6 and the two second rotating shafts 8 drive the worm gear 9 and the barrel 31 to rotate through the worm 10. When the barrel 31 rotates 180°, the angle between the discharge pipe 33 and the horizontal plane is an acute angle less than 90°, so that the gas and fuel in the discharge pipe 33 are ejected at an inclined angle to achieve the purpose of side blowing; when the angle between the barrel 31 and the discharge pipe 33 is 157.5°, the barrel 31 rotates 180°, and the angle between the discharge pipe 33 and the horizontal plane is 45°. At this time, the gas and fuel ejected from the discharge pipe 33 can cover a large area, which can improve work efficiency.

[0039] A valve core 14 is fixedly provided at the top end of the gun barrel 31. The valve core 14 is a spherical structure. A first through hole that is transparent up and down is opened in the valve core 14. The valve core 14 is connected with the gun barrel 31 through the first through hole. A valve seat 15 is rotatably sleeved on the valve core 14. The valve seat 15 is a hollow spherical structure. The top of the gun barrel 31 passes through the valve seat 15 and is fixed on the valve core 14. The gun barrel 31 is connected with the inside of the valve core 14. A connecting rod 16 is provided on the valve seat 15. One end of the connecting rod 16 away from the valve seat 15 is fixed on the furnace body 1; a feed pipe 17 is fixedly provided at the top of the valve seat 15. A second through hole that is transparent up and down is opened on the top of the valve seat 15. The second through hole is connected up and down with the first through hole. The valve seat 15 is connected with the feed pipe 17 through the second through hole.

[0040] By providing a hollow spherical valve seat 15 and a spherical valve core 14 to connect the top end of the gun barrel 31 with the feed pipe 17, the purpose of free rotation of the gun barrel 31 can be met. In addition, the contact area between the hollow spherical valve seat 15 and the spherical valve core 14 is large, which can improve the sealing performance between the gun barrel 31 and the feed pipe 17 and prevent gas and fuel leakage.

[0041] A circulation pipe hole 18 extending along the length direction of the spray gun 3 is opened in the spray gun 3, and the circulation pipe hole 18 includes a water inlet and a water outlet, and the water inlet and the water outlet are both located at the top end of the spray gun 3; two circulation water pipes 19 are fixedly provided at the top end of the spray gun 3, and the two circulation water pipes 19 are respectively connected to the water inlet and the water outlet of the circulation pipe hole 18, and the end of the circulation water pipe 19 away from the spray gun 3 is fixedly provided with a connection with a circulation water pump 20, and the circulation water pump 20 is provided with a cooling water tank.

[0042] By opening a circulation pipe hole 18 in the spray gun 3 and connecting it to the circulation water pump 20 and the cooling water tank through the circulation water pipe 19, the temperature of the spray gun 3 when working inside the furnace body 1 can be reduced, thereby extending the service life of the spray gun 3.

[0043] Working principle: When the discharge pipe 33 is at a vertical angle and side blowing is required, the drive motor 13 is started, and the output shaft of the drive motor 13 drives the first rotating shaft 6 located on the left side to rotate. The first rotating shaft 6 drives the second bevel gears 12 and the second rotating shaft 8 on the front and rear sides to rotate synchronously through the first bevel gears 11 at both ends, and then drives the first bevel gear 11 and the first rotating shaft 6 located on the right side to rotate, so that the two first rotating shafts 6 and the two second rotating shafts 8 can rotate synchronously, and the two first rotating shafts 6 and the two second rotating shafts 8 drive the worm gear 9 and the barrel 31 to rotate through the worm 10. When the barrel 31 rotates 180°, the angle between the discharge pipe 33 and the horizontal plane is an acute angle less than 90°, so that the gas and fuel in the discharge pipe 33 are ejected at an inclined angle to achieve the purpose of side blowing.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A spray gun structure for a side-top blowing enhanced smelting furnace, characterized in that: comprising a furnace body (1); A furnace opening (2) is provided on the top of the furnace body (1); The furnace body (1) is provided with a plurality of slots which are transparent inside and outside, and the slots are arranged in an inclined manner with the inside being lower and the outside being higher; A plurality of spray guns (3) are provided on the furnace body (1), the spray gun (3) comprising a gun barrel (31) rotatably inserted into the slot, both ends of the gun barrel (31) extending out of the slot, a discharge pipe (33) extending in the up-down direction is provided at the bottom end of the gun barrel (31), the angle between the gun barrel (31) and the discharge pipe (33) is an obtuse angle greater than 135°, and the discharge pipe (33) is used to adjust the spray angle; A driving mechanism is provided on the furnace body (1), and the driving mechanism is used to drive the gun barrel (31) to rotate so as to change the inclination angle of the discharge pipe (33).

2. The lance structure for a side-top-blowing enhanced smelting furnace according to claim 1, characterized in that: A connecting pipe (32) is fixedly provided between the gun barrel (31) and the discharge pipe (33); the connecting pipe (32) is horizontally arranged along the radial direction of the furnace body (1); the angle between the connecting pipe (32) and the gun barrel (31) is an obtuse angle greater than 135°; the connecting pipe (32) and the discharge pipe (33) are arranged perpendicular to each other.

3. The lance structure for a side-top-blowing enhanced smelting furnace according to claim 1, characterized in that: Four spray guns (3) and four slot holes are provided, and the four spray guns (3) and the slot holes are arranged at equal intervals along the circumferential direction of the furnace body (1).

4. A lance structure for a side-top-blowing enhanced smelting furnace according to claim 3, characterized in that: A mounting plate (4) is fixedly sleeved on the furnace body (1); two first shaft seats (5) are fixedly disposed at intervals in front and back and corresponding to each other on both left and right sides of the mounting plate (4); the driving mechanism comprises a first rotating shaft (6) which is rotatably disposed in the two first shaft seats (5); two second shaft seats (7) which are spaced in the left and right and corresponding to each other on both front and back sides of the mounting plate (4); and the driving member comprises a second rotating shaft (8) which is rotatably disposed in the two second shaft seats (7); A worm gear (9) is fixedly provided at the top end of each of the four gun barrels (31), a worm gear (10) is fixedly provided at the middle of each of the two first rotating shafts (6) and the two second rotating shafts (8), and the four worm gears (9) are respectively meshed with the four worm gears (10); A driving device is provided on the mounting plate (4), and the driving device is used to drive the two first rotating shafts (6) and the two second rotating shafts (8) to rotate.

5. The lance structure for a side-top-blowing enhanced smelting furnace according to claim 4, characterized in that: The driving device comprises a driving motor (13) fixedly mounted on the mounting plate (4), and the front end of the first rotating shaft (6) on the left side is fixedly connected to the output shaft of the driving motor (13); The front and rear ends of the first rotating shaft (6) both pass through the first shaft seat (5) and are fixedly provided with a first bevel gear (11); the left and right ends of the second rotating shaft (8) both pass through the second shaft seat (7) and are fixedly provided with a second bevel gear (12); the first bevel gear (11) and the second bevel gear (12) at adjacent ends of the first rotating shaft (6) and the second rotating shaft (8) are meshed.

6. The lance structure for a side-top-blowing enhanced smelting furnace according to claim 1, characterized in that: A valve core (14) is fixedly provided at the top end of the gun barrel (31). The valve core (14) is a spherical structure. A first through hole is provided in the valve core (14) and is transparent from top to bottom. The valve core (14) is communicated with the gun barrel (31) through the first through hole. A valve seat (15) is rotatably sleeved on the valve core (14). The valve seat (15) is a hollow spherical structure. The top end of the gun barrel (31) passes through the valve seat (15) and is fixedly provided on the valve core (14). The gun barrel (31) is communicated with the inside of the valve core (14). A connecting rod (16) is provided on the valve seat (15). One end of the connecting rod (16) away from the valve seat (15) is fixedly provided on the furnace body (1); A feed pipe (17) is fixedly provided at the top of the valve seat (15). A second through hole which is transparent from top to bottom is opened at the top of the valve seat (15). The second through hole is vertically connected to the first through hole. The valve seat (15) is connected to the feed pipe (17) via the second through hole.

7. The lance structure for a side-top-blowing enhanced smelting furnace according to claim 1, characterized in that: A circulation pipe hole (18) extending along the length direction of the spray gun (3) is provided in the spray gun (3), and the circulation pipe hole (18) includes a water inlet and a water outlet, and the water inlet and the water outlet are both located at the top end of the spray gun (3); Two circulating water pipes (19) are fixedly provided at the top end of the spray gun (3), and the two circulating water pipes (19) are respectively connected to the water inlet and the water outlet of the circulating pipe hole (18). One end of the circulating water pipe (19) away from the spray gun (3) is fixedly provided with a connection to a circulating water pump (20), and a cooling water tank is provided on the circulating water pump (20).

8. The lance structure for a side-top-blowing enhanced smelting furnace according to claim 1, characterized in that: A heat-insulating protective sleeve (21) is fixedly provided at the bottom end of the discharge pipe (33), and a gas hole for spraying gas and fuel is provided at the bottom end of the heat-insulating protective sleeve (21).

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