Anti-bonding high-efficiency long-service-life rotary spray gun

Abstract

The utility model relates to the technical field of metallurgy, and discloses an anti-bonding high-efficiency long-service-life rotary spray gun which is characterized in that a desulfurizing agent pipe, a cooling pipe and a steel core pipe are sequentially sleeved from inside to outside, a desulfurizing agent inlet is formed in the top of the desulfurizing agent pipe, a desulfurizing agent outlet is formed in the bottom of the desulfurizing agent pipe, and the steel core pipe comprises a steel core upper pipe and a steel core lower pipe; the steel core upper pipe sequentially comprises a first rotating part and a second rotating part from top to bottom, a stirring part is arranged in the circumferential direction of the steel core lower pipe and provided with a plurality of core plates in the circumferential direction of the steel core pipe, an included angle is formed between the plane direction of each core plate and the axial direction of the steel core pipe, and a paddle is fixed to each core plate. Each paddle comprises an iron facing face, an iron backing face, an upper surface, a lower surface and a side face to form the cubic paddle, and the iron facing faces, the iron backing faces and the side faces are all arranged in an inclined mode. And through the creatively designed spray gun paddle structure, the problem that stirring paddles are bonded into a lump is effectively avoided, and the service life of the spray gun is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to an anti-adhesion, high-efficiency and long-life rotary spray gun. Background Art

[0002] Hot metal desulfurization is a pretreatment process for removing sulfur from molten iron before it enters the steelmaking furnace. It reduces the coke ratio and productivity of continuous steel casting, while also reducing lime consumption and slag volume, thereby lowering production costs. It is an essential process in current metallurgical production. However, the structural characteristics of the currently used injection method's spray guns result in poor dynamic conditions, a large desulfurization blind spot, difficulty achieving uniform and deep desulfurization, long desulfurization times, and low desulfurization rates.

[0003] In order to improve the above-mentioned shortcomings of desulfurization by injection, major steel mills and research institutions have developed a method of adding blades to the original spray gun to improve the above-mentioned shortcomings. However, the existing improvements still have the following problems: 1) Simply adding blades to the existing spray gun causes the spray gun to be subjected to radial force and centrifugal force. The original steel core structure is unable to withstand the above loads, resulting in severe vibration of the spray gun and cracking of the refractory layer on the outside of the spray gun. What's worse, the spray gun is severely bent and deformed, which greatly reduces the service life of the spray gun. At present, a spray gun with paddles usually needs to be replaced after being used for 10-30 furnaces, which increases the use cost and time cost of the spray gun; 2) Because the rotary spray gun with paddles currently used in steel mills has residues of desulfurizer that have not fully reacted with molten iron, they accumulate and stick between the blades. After the spray gun is used more than ten times, the entire blade part of the spray gun is bonded into a lump-like structure, causing the paddle spray gun to lose its original stirring function and greatly reducing the utilization rate and desulfurization efficiency of the desulfurizer. After sticking into a lump, the center of gravity of the spray gun changes, further increasing the vibration intensity and centrifugal force of the spray gun, and further reducing the service life of the spray gun.

[0004] Therefore, there is a need in the prior art for improving an anti-sticking, high-efficiency, and long-life rotary spray gun. Utility Model Content

[0005] In view of this, the purpose of the embodiment of the present invention is to propose an anti-sticking, high-efficiency and long-life rotary spray gun. Through the creatively designed spray gun blade structure, the problem of sticking together between the stirring blades is effectively avoided, the service life of the spray gun is further improved, and the problem of insufficient strength and rigidity of the existing spray gun steel core structure is solved, thereby greatly improving the service life of the spray gun.

[0006] Based on the above objectives, the embodiment of the present invention provides an anti-sticking, high-efficiency, and long-life rotary spray gun, comprising:

[0007] The desulfurizer tube, cooling tube and steel core tube are sequentially arranged from the inside to the outside. The top of the desulfurizer tube is the desulfurizer inlet and the bottom is the desulfurizer outlet. The steel core tube includes a steel core upper tube and a steel core lower tube. The steel core upper tube includes a first rotating part and a second rotating part from top to bottom. The first rotating part and the second rotating part are set to different cross-sectional shapes. A stirring part is arranged along the circumference of the steel core lower tube. The stirring part is provided with multiple core plates along the circumference of the steel core tube. The plane direction of each core plate has an angle with the axial direction of the steel core tube. A blade is fixed on each core plate. The blade includes an iron-facing surface, a back iron surface, an upper surface, a lower surface and a side surface to form a cubic blade. The iron-facing surface, the back iron surface and the side surface are all inclined.

[0008] In some embodiments, the facing iron surface is inclined from bottom to top, and the angle between the inclination direction and the axial direction of the steel core tube is 3≤β≤20°; the back iron surface is inclined from bottom to top, and the angle between the inclination direction and the axial direction of the steel core tube is 0≤α≤10°; the side surface is inclined outward from bottom to top away from the axis of the steel core tube, and the angle between the inclination angle and the axial direction of the steel core tube is 2≤γ≤4°.

[0009] In some embodiments, the connection between the steel core tube and the top of the blade is a conical transition with a transition angle of 10<σ≤30°, the angle between the upper surface of the blade and the horizontal plane is 0<η≤30°, and the transition between the steel core tube and the bottom of the blade is also a conical transition with a transition angle of 5<σ≤20°.

[0010] In some embodiments, the distance between the stirring part and the desulfurizer outlet is 1 / 3 to 1 / 2 of the length of the steel core lower tube, and the thickness of each blade increases from bottom to top along the axial direction of the steel core tube.

[0011] In some embodiments, an upper top plate is provided on the top of the cooling tube, an upper sealing plate is provided on the top of the cooling tube and the steel core tube, and a lower sealing plate is provided on the bottom, so that a closed cooling cavity is formed inside the cooling tube and the steel core tube, and a guide hole is provided on the cooling tube to communicate with the steel core tube.

[0012] In some embodiments, the cross section of the first rotating part is a square tube, the cross section of the second rotating part is a circular tube, and the steel core lower tube is a seamless steel tube.

[0013] In some embodiments, a cooling tube outer wall support block is provided on the outside of the cooling tube, and the cooling tube outer wall support blocks are distributed in a circular array along the outer wall of the cooling tube in the circumferential direction and in a linear array along the outer wall of the cooling tube in the axial direction. A desulfurizer tube outer wall support block is provided on the outside of the steel core lower tube, and the desulfurizer tube outer wall support blocks are distributed in a circular array along the outer wall of the desulfurizer tube in the circumferential direction and in a linear array along the outer wall of the desulfurizer tube in the axial direction.

[0014] In some embodiments, the steel core upper tube and the steel core lower tube are connected via a flange plate, wherein radial lifting ears are provided on the outer side of the flange plate, and axial lifting ears are provided on the upper side of the flange plate.

[0015] In some embodiments, the outer circumferential surface of the connection between the steel core upper tube and the steel core lower tube is provided with reinforcing ribs uniformly distributed along the circumference.

[0016] In some embodiments, the outer peripheral surface of the steel core lower tube, the core plate of the stirring blade and the outer peripheral surface of the core plate are all provided with a refractory material layer, and a plurality of V-shaped steel bars are welded between the outer peripheral surface of the steel core lower tube and the refractory material layer, and between the outer peripheral surface of the stirring core plate and the refractory material layer.

[0017] The utility model has at least the following beneficial technical effects:

[0018] The utility model solves the problems of insufficient strength and rigidity of the existing spray gun steel core structure, vibration and bending of the spray gun, and greatly improves the service life of the spray gun. At the same time, through the creatively designed spray gun blade structure and injection structure, the blade structure is designed based on the flow field simulation analysis results. The blade structure enables the molten iron flow field to form upper and lower circulations with different speeds, improves the fluid movement in the flow dead zone, and enhances the effect of the molten iron circulation. After applying the blade of this structure, the flow rate of the molten iron on the blade surface is greatly improved, and at the same time, the desulfurizer residue is further prevented from hanging and sticking between the blades, effectively avoiding the problem of sticking together between the stirring blades, and further improving the service life of the spray gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of an embodiment of the anti-adhesion, high-efficiency, and long-life rotary spray gun provided by the utility model;

[0021] Figure 2 The utility model provides a Figure 1 The cross-sectional view of the spray gun along the AA direction;

[0022] Figure 3 The utility model provides a Figure 1 Cross-sectional view of the spray gun in the BB direction;

[0023] Figure 4 The utility model provides a Figure 2 A partial enlarged schematic diagram of the spray gun IV mark;

[0024] Figure 5 The utility model provides a Figure 2A partial enlarged schematic diagram of the V mark on the spray gun.

[0025] Description of reference numerals:

[0026] 1. Desulfurizer pipe; 2. Cooling pipe; 2.1. Cooling inlet joint; 3. Steel core pipe; 3.1. Steel core upper pipe; 3.2. Steel core lower pipe; 4. Cooling cavity upper end sealing plate; 5. Steel core pipe upper end top plate; 6. Stirring part; 7. Paddle; 8. Desulfurizer inlet joint 9. Radial lifting ear; 10. Flange plate; 11. First rib plate; 12. First baffle; 13. Second rib plate; 14. Second baffle; 15. Refractory material layer; 16. Core plate; 17. Axial lifting ear; 18. Cooling cavity lower end sealing plate; 19. Desulfurizer pipe outer wall support block; 20. Cooling pipe outer wall support block; 21. Cooling gas external pipe; 22. Diversion hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention pertains; the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this invention; for example, the directions or positions indicated by the terms "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are for ease of description only and should not be construed as limiting this technical solution.

[0029] The terms "including," "having," and any variations thereof in the specification and claims of this utility model and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the specification and claims of this utility model and the accompanying drawings are used to distinguish between different items, not to describe a particular order. "Multiple" means two or more, unless otherwise expressly specified.

[0030] In the specification and claims of this utility model and the above-mentioned description of the drawings, when an element is referred to as being “fixed to”, “mounted on”, “disposed on” or “connected to” another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being “connected to” another element, it may be directly or indirectly connected to the other element.

[0031] Furthermore, references to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] like Figure 1 The figure shows a schematic diagram of an embodiment of the anti-adhesion, high-efficiency and long-life rotary spray gun provided by the present invention. Figure 2 The utility model provides a Figure 1 The AA-direction cross-sectional view of the spray gun includes:

[0033] The desulfurizer tube 1, cooling tube 2 and steel core tube 3 are sequentially sleeved from the inside to the outside. The top of the desulfurizer tube 1 is the desulfurizer inlet, which can be further connected to the desulfurizer inlet joint 8, and the bottom is the desulfurizer outlet. The steel core 3 includes a steel core upper tube 3.1 and a steel core lower tube 3.2. The steel core upper tube 3.1 includes a first rotating part and a second rotating part from top to bottom. The first rotating part and the second rotating part are set to different cross-sectional shapes. A stirring part 6 is arranged circumferentially along the steel core lower tube 3.2. The stirring part 6 is provided with multiple core plates 16 along the circumference of the steel core tube 3. The plane direction of each core plate 16 has an angle with the axial direction of the steel core tube 3. A blade 7 is fixed on each core plate 16. The blade 7 includes an iron-facing surface, a back iron surface, an upper surface, a lower surface and a side surface to form a cubic blade 7. The iron-facing surface, the back iron surface and the side surface are all inclined.

[0034] Furthermore, the steel core tube 3 is driven to rotate by a motor, thereby driving the stirring part 6 blades to rotate, and an iron-facing surface and an iron-back surface are formed during the rotation process, wherein the iron-facing surface is inclined from bottom to top, and the angle between the inclined direction and the axial direction of the steel core tube is 3≤β≤20°, and the iron-back surface is inclined from bottom to top, and the angle between the inclined direction and the axial direction of the steel core tube is 0≤α≤10°, and the side surface is inclined outward from bottom to top away from the axis of the steel core tube, and the angle between the inclined direction and the axial direction of the steel core tube is 2≤γ≤4°. The blade structure is designed based on the flow field simulation analysis results. The blade structure described in the utility model enables the molten iron flow field to form a lower circulation with a faster speed, and improves the fluid movement in the flow dead zone, while enhancing the effect of the upper circulation of the molten iron. wherein, the side surface of the stirring blade is inclined outward from bottom to top. This setting not only reduces the slag adhesion of the blade, but also makes the iron-facing surface / iron-back surface of the spray gun blade form a "long on top and short on bottom" structure. The spray gun blades at different positions all rotate coaxially with the same angular velocity. The larger the radius, the greater the linear velocity. Therefore, during the stirring process The flow rate of the molten iron around the middle stirring blade increases continuously from bottom to top along the side of the spray gun blade, resulting in a faster circulation speed at the upper part of the spray gun blade than at the lower part. The desulfurizer sprayed directly into the blade can enter the upper circulation more quickly. The iron-facing and back-iron surfaces are tilted forward from bottom to top, making the side of the stirring blade "wide at the top and narrow at the bottom", which increases the range of the upper circulation and improves the circumferential and radial diffusion capacity of the desulfurizer. This allows the desulfurizer to enter the molten iron more quickly and evenly, enhancing the contact between the desulfurizer and the molten iron and improving the desulfurization effect. The application of this structure of the blade greatly increases the flow rate of the molten iron on the blade surface, while further preventing the desulfurizer residue from hanging and sticking between the blades.

[0035] Furthermore, the connection between the steel core tube 3 and the top of the blade 7 is tapered, with a transition angle of 10 < σ ≤ 30°. The angle between the upper surface of the blade and the horizontal plane is 0 < η ≤ 30° to reduce slag buildup on the agitator head. The transition between the steel core tube and the bottom of the blade is also tapered, with a transition angle of 5 < σ ≤ 20°, to reduce stress concentration and further increase the service life of the agitator.

[0036] Furthermore, there is a smooth transition between the stirring blades 7 of the stirring head. The transition can be a smooth arc transition or a hyperbola or other transition method, so as to avoid stress concentration at the connection position between the blades, improve the torsional strength of the stirring device blades, and increase their service life.

[0037] Furthermore, the stirring part 6 and the desulfurizing agent outlet (such as Figure 2The distance between the bottom of the desulfurization tube (shown as shown) is 1 / 3 to 1 / 2 the length of the lower steel core tube, and the thickness of each blade increases from bottom to top along the axial direction of the steel core tube. The spray gun blade 7 is arranged in the lower middle portion of the steel core tube 3, and the desulfurizer outlet is arranged at the bottom of the spray gun. This lengthens the path between the desulfurizer outlet and the spray gun blade. After the desulfurizer is sprayed from the desulfurizer outlet, it mixes with the molten iron and fully reacts with it before reaching the blade position. This greatly reduces the probability of desulfurizer residue coming into contact with the blade, thereby effectively preventing the desulfurizer from clumping between the blades.

[0038] Furthermore, if Figure 3 The utility model provided by the present invention is based on Figure 1 A cross-sectional view of the spray gun from the BB direction shows that the cross-section of the first rotating section of the upper steel core tube 3.1 is a square tube, the cross-section of the second rotating section is a circular tube, and the lower steel core tube 3.2 is a seamless steel tube. By dividing the steel core tube into an upper steel core tube and a lower steel core tube, and by specially designing the different shapes of the first and second rotating sections, the stress and load during operation are effectively dispersed. The square design of the first rotating section significantly enhances its ability to resist torque, reducing fatigue damage caused by torque concentration, thereby significantly extending the service life of the steel core tube. Meanwhile, the circular tube section is focused on bearing radial forces and bending moments. This specialized structural design allows each component to fully utilize the material properties, making the overall structure more stable and reliable. In addition, the design between the first and second rotating sections ensures that stress is more evenly distributed across the entire structure when subjected to external forces, avoiding stress concentration. This optimized stress distribution not only improves the structure's load-bearing capacity but also reduces the risk of localized damage caused by stress concentration, further enhancing the safety and reliability of the steel core tube.

[0039] Furthermore, the steel core tube includes a top plate 5 at the upper end of the steel core tube, and the cavity between the cooling tube 2 and the steel core tube 3 is provided with an upper end sealing plate 4 and a lower end sealing plate 18, so that a closed cooling cavity is formed in the cooling tube 2 and the steel core tube 3. A cooling gas external pipe 21 is further provided at the end of the cooling tube 2 to ventilate the tube, and a guide hole 22 is provided on the cooling tube 2 to communicate with the steel core tube, such as Figure 4 As shown. The inner surface of the steel core tube and the outer surface of the cooling tube form a cooling medium discharge cavity, and the inner surface of the cooling tube and the outer surface of the desulfurizer tube form a cooling medium input cavity. The cooling medium is input from the inlet of the cooling medium inlet joint, enters the input cavity, and then enters the discharge cavity through the guide hole, and is discharged from the upper end outlet of the discharge cavity, thereby cooling the rotating stirring steel core tube. The heat exchange medium cools the steel core tube through the circuit of the cooling circuit device, thereby enhancing the strength and rigidity of the rotating spray gun during operation and improving the service life of the rotating stirring spray gun.

[0040] Furthermore, if Figure 5As shown, cooling tube outer wall support blocks 20 are provided on the outside of the cooling tube 2. The support blocks 20 are arranged in a circumferential array along the outer wall of the cooling tube and in a linear array along the outer wall of the cooling tube in the axial direction. Desulfurizer tube outer wall support blocks 19 are provided on the outside of the steel core tube 3. The support blocks 19 are arranged in a circumferential array along the outer wall of the desulfurizer tube and in a linear array along the outer wall of the desulfurizer tube in the axial direction. In some embodiments, the gap between the outer side of the desulfurizer tube outer wall support blocks 19 and the inner wall of the cooling tube is 0.2-0.5 mm.

[0041] Furthermore, the steel core upper tube 3.1 and the steel core lower tube 3.2 are connected by a flange plate 10. A radial lifting lug 9 is provided on the outer side of the flange plate 10, and an axial lifting lug 17 is provided on the upper side of the flange plate 10. A through hole is opened on the lifting lug for lifting the rotary spray gun when disassembling / installing the rotary spray gun.

[0042] Furthermore, the outer circumferential surface of the connection between the steel core upper tube 3.1 and the steel core lower tube 3.2 is provided with reinforcing ribs evenly distributed along the circumference. Figure 2 As shown, a first rib 11 , a first baffle 12 , a second rib 13 and a second baffle 14 are sequentially arranged on the lower circumference of the flange plate 10 .

[0043] Furthermore, the outer peripheral surface of the steel core lower tube 3.2, the core plate 16 of the stirring blade 7 and the outer peripheral surface wrapped around the core plate 16 are all provided with a refractory material layer 15, and a plurality of V-shaped steel bars are welded between the outer peripheral surface of the steel core lower tube 3.2 and the refractory material layer 15, and between the outer peripheral surface of the stirring core plate 16 and the refractory material layer 15.

[0044] The above are exemplary embodiments disclosed by the present invention, but it should be noted that various changes and modifications can be made without departing from the scope of the disclosure of the embodiments of the present invention as defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention can be described or required in individual form, they can also be understood as multiple unless expressly limited to the singular.

[0045] It should be understood that, as used herein, the singular forms "a" and "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" is intended to include any and all possible combinations of one or more of the associated listed items.

[0046] The serial numbers of the embodiments disclosed in the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to limit the scope of the disclosure of the present invention (including the claims) to these examples. Based on the principles of the present invention, the technical features of the above embodiments or different embodiments may be combined, and there are many other variations of the various aspects of the above embodiments, which are not provided in detail for the sake of clarity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An anti-adhesion, high-efficiency and long-life rotary spray gun, characterized in that: include: A desulfurizer tube, a cooling tube and a steel core tube are sequentially sleeved from the inside to the outside, the top of the desulfurizer tube is a desulfurizer inlet, and the bottom is a desulfurizer outlet, the steel core tube includes a steel core upper tube and a steel core lower tube, the steel core upper tube includes a first rotating part, a first rotating part and a second rotating part from top to bottom, the first rotating part and the second rotating part are set to different cross-sectional shapes, a stirring part is arranged along the circumference of the steel core lower tube, the stirring part is provided with multiple core plates along the circumference of the steel core tube, the plane direction of each core plate has an angle with the axial direction of the steel core tube, a blade is fixed on each core plate, the blade includes an iron facing surface, a back iron surface, an upper surface, a lower surface and a side surface to form a cubic blade, the iron facing surface, the back iron surface and the side surface are all inclined.

2. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: The facing iron surface is inclined from bottom to top, and the angle between the inclination direction and the axial direction of the steel core tube is 3≤β≤20°; the back iron surface is inclined from bottom to top, and the angle between the inclination direction and the axial direction of the steel core tube is 0≤α≤10°; the side surface is inclined outward from bottom to top away from the axis of the steel core tube, and the angle between the inclination angle and the axial direction of the steel core tube is 2≤γ≤4°.

3. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: The connection between the steel core tube and the top of the blade is a conical transition with a transition angle of 10<σ≤30°, the angle between the upper surface of the blade and the horizontal plane is 0<η≤30°, and the transition between the steel core tube and the bottom of the blade is also a conical transition with a transition angle of 5<σ≤20°.

4. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: The distance between the stirring part and the desulfurizer outlet is 1 / 3 to 1 / 2 of the length of the steel core lower tube, and the thickness of each blade increases from bottom to top along the axial direction of the steel core tube.

5. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: An upper top plate is provided on the top of the cooling pipe, an upper end sealing plate is provided on the top of the cooling pipe and the steel core pipe, and a lower end sealing plate is provided on the bottom, so that a closed cooling cavity is formed in the cold-taking pipe and the steel core pipe, and a guide hole is provided on the cooling pipe to communicate with the steel core pipe.

6. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: The cross section of the first rotating part is a square tube, the cross section of the second rotating part is a circular tube, and the steel core lower tube is a seamless steel tube.

7. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: A cooling tube outer wall support block is arranged on the outside of the cooling tube, and the cooling tube outer wall support blocks are distributed in a circular array along the outer wall of the cooling tube in the circumferential direction and in a linear array along the outer wall of the cooling tube in the axial direction. A desulfurizer tube outer wall support block is arranged on the outside of the steel core lower tube, and the desulfurizer tube outer wall support blocks are distributed in a circular array along the outer wall of the desulfurizer tube in the circumferential direction and in a linear array along the outer wall of the desulfurizer tube in the axial direction.

8. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: The steel core upper tube and the steel core lower tube are connected via a flange plate. A radial lifting lug is provided on the outer side of the flange plate, and an axial lifting lug is provided on the upper side of the flange plate.

9. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: The outer circumferential surface of the connection between the steel core upper tube and the steel core lower tube is provided with reinforcing ribs evenly distributed along the circumference.

10. The anti-sticking, high-efficiency, and long-life rotary spray gun according to claim 1, characterized in that: The outer circumference of the steel core lower tube, the core plate of the blade and the outer circumference of the core plate are all provided with a refractory material layer, and a plurality of V-shaped steel bars are welded between the outer circumference of the steel core lower tube and the refractory material layer, and between the outer circumference of the core plate and the refractory material layer.

Images