Spiral cone powder spray gun

Abstract

According to the technical scheme, the spiral cone powder spray gun comprises a spray head, a spiral guide plate is arranged on the inner wall of the spray head, two spiral arc-shaped guide plates are arranged on one side of the spiral guide plate, and the side walls of the two spiral arc-shaped guide plates are in spiral connection with the side wall of the spiral guide plate; powder can do spiral motion along the cross sections of the spiral guide plate and the spiral arc-shaped guide plate when passing through the spiral guide plate and the spiral arc-shaped guide plate, the centrifugal force of the powder can be increased through spiral motion, and the powder is diffused outwards after entering a flue through the spiral guide plate, the spiral arc-shaped guide plate and the diffusion cone. According to the utility model, the powder is arranged in the diffusion cone, so that the contact area of the powder and the flue gas is increased, the flue gas is disturbed by greater force when the powder collides with the flue gas, the powder better reacts with the flue gas, and meanwhile, the powder is looser when passing through the diffusion cone and cannot be adsorbed together due to friction force between the powder, so that the reaction efficiency is greatly improved; the enterprise operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of spray gun technology, and in particular to a spiral cone powder spray gun. Background Technology

[0002] In the treatment of flue gas from industrial boilers, dry desulfurization and dry denitrification processes often use powder spray guns. The nozzles of these powder spray guns are mostly designed with large and small heads. Because the powder sprayed from conventional spray guns is columnar, it cannot diffuse into the inner wall of the flue after colliding with the flue gas during spraying. The contact area between the sprayed powder and the flue gas is limited, resulting in a relatively low reaction rate between the powder and the flue gas. This affects the environmental compliance requirements of enterprises and indirectly affects the unit load, boiler stability, and enterprise production. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the existing technology, the purpose of this utility model is to provide a spiral cone powder spray gun, which effectively solves the problems of conventional spray guns spraying powder in columnar shape, which cannot diffuse to the inner wall of the flue after the powder collides with the flue gas during spraying, and the limited contact area between the sprayed powder and the flue gas, resulting in a relatively low reaction between the powder and the flue gas, affecting the environmental protection emission standards of enterprises, and indirectly affecting the unit load, boiler stability and enterprise production.

[0004] The technical solution provided by this utility model is to provide a spiral cone powder spray gun, including a nozzle, a spiral guide plate provided on the inner wall of the nozzle, two spiral arc-shaped guide plates provided on one side of the spiral guide plate, and the side walls of the two spiral arc-shaped guide plates are spirally connected to the side wall of the spiral guide plate, a diffusion cone is provided between the two spiral arc-shaped guide plates, and a pipe mechanism is provided at the input end of the nozzle.

[0005] Preferably, the diffusion cone includes an annular block, a large cone block is provided on one side of the annular block, the annular block and the large cone block are both provided between two spiral arc-shaped guide plates, and a small cone block is provided on the side of the annular block opposite to the large cone block.

[0006] Preferably, the diameter of the large cone block gradually narrows from the side closest to the ring block to the side away from the ring block, and the diameter of the small cone block gradually narrows from the side closest to the ring block to the side away from the ring block.

[0007] Preferably, the diameter of the nozzle gradually increases from the input end to the output end.

[0008] Preferably, the piping mechanism includes an elbow pipe installed at the nozzle input end, a gun barrel pipe installed on the side of the elbow pipe away from the nozzle, and a fixing component installed on the outer wall of one side of the gun barrel pipe.

[0009] Preferably, the fixing assembly includes a first flange, which is installed on the side of the gun barrel away from the elbow pipe, and a second flange is installed on the outer wall of the gun barrel. The gun barrel is installed in the flue gas duct of the industrial boiler through the first flange and the second flange.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] When the powder passes through the spiral guide plate and the spiral arc guide plate, it will move in a spiral motion along the cross-section of the spiral guide plate and the spiral arc guide plate. The spiral motion increases the centrifugal force of the powder. The spiral guide plate and the spiral arc guide plate, together with the diffusion cone, cause the powder to diffuse outward after entering the flue, thereby increasing the contact area between the powder and the flue gas. Moreover, when the powder collides with the flue gas, it has a greater force to disrupt the flue gas, allowing the powder to react better with the flue gas. At the same time, the powder becomes more loose when passing through the diffusion cone, and will not be adsorbed together due to the friction between powder particles, thus greatly improving the reaction efficiency and reducing the operating costs of enterprises. Attached Figure Description

[0012] Figure 1 This is a first-view structural schematic diagram of the spiral cone powder spray gun of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the nozzle of this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the spiral guide plate and diffuser cone of this utility model.

[0015] Figure 4 This is a schematic diagram of the spiral arc-shaped guide plate of this utility model.

[0016] Explanation of the labels in the diagram:

[0017] 1. Nozzle; 2. Spiral guide plate; 3. Spiral arc guide plate; 4. Diffusion cone; 5. Circular block; 6. Large cone block; 7. Small cone block; 8. Elbow pipe; 9. Gun barrel; 10. First flange; 11. Second flange. Detailed Implementation

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Depend on Figure 1 , Figure 2 and Figure 4The present invention provides a spiral cone powder spray gun, comprising a nozzle 1, a spiral guide plate 2, two spiral arc-shaped guide plates 3, a diffusion cone 4, and a pipeline mechanism.

[0020] Firstly, specifically, nozzle 1 is located inside the flue gas duct of an industrial boiler. Nozzle 1 has a funnel structure, with the diameter of the nozzle 1 gradually increasing from the input end to the output end. Spiral guide plate 2 is installed on the inner wall of nozzle 1, and two spiral arc-shaped guide plates 3 are installed on one side of spiral guide plate 2. The outer walls of the two spiral arc-shaped guide plates 3 are installed on the inner wall of nozzle 1, and the side walls of the two spiral arc-shaped guide plates 3 are spirally connected to the side walls of spiral guide plate 2. Both spiral guide plate 2 and the two spiral arc-shaped guide plates 3 are spiral structures. More specifically, when the powder passes through spiral guide plate 2 and spiral arc-shaped guide plates 3, it will move in a spiral motion along the cross-section of spiral guide plate 2 and spiral arc-shaped guide plates 3. The spiral motion increases the centrifugal force of the powder, and spiral guide plate 2 and spiral arc-shaped guide plates 3 cause the powder to diffuse outward after entering the flue gas duct.

[0021] Depend on Figures 2 to 3 Secondly, the diffusion cone 4 is installed between two spiral arc-shaped guide plates 3. Specifically, the diffusion cone 4 includes a circular ring block 5, a large cone block 6 is provided on one side of the circular ring block 5, the circular ring block 5 and the large cone block 6 are provided between the two spiral arc-shaped guide plates 3, and a small cone block 7 is provided on the side of the circular ring block 5 away from the large cone block 6. More specifically, the diameter of the large cone block 6 near the circular ring block 5 gradually narrows to the side away from the circular ring block 5, and the diameter of the small cone block 7 near the circular ring block 5 gradually narrows to the side away from the circular ring block 5. Both the large cone block 6 and the small cone block 7 have a conical structure. Through the setting of the large cone block 6 and the small cone block 7, the powder can be made more loose when passing through the nozzle 1, and will not be adsorbed together due to the friction between the powder particles.

[0022] Depend on Figure 1 Finally, the piping system includes an elbow pipe 8 and a gun barrel 9, as well as a fixing assembly. Specifically, the elbow pipe 8 is installed at the input end of the nozzle 1, the gun barrel 9 is installed on the side of the elbow pipe 8 away from the nozzle 1, and the fixing assembly is installed on one side of the gun barrel 9. The gun barrel 9 is installed on the wall of the industrial boiler flue through the fixing assembly. The elbow pipe 8 and the gun barrel 9 are located inside the industrial boiler flue.

[0023] The fixing assembly includes a first flange 10 and a second flange 11. The first flange 10 is installed on the side of the gun barrel 9 away from the elbow pipe 8, and the second flange 11 is installed on the outer wall of the gun barrel 9. Specifically, the first flange 10 is installed on the outer wall of the industrial boiler flue, and the second flange 11 is installed on the inner wall of the industrial boiler flue. Both the first flange 10 and the second flange 11 have threaded holes, and bolts are installed in the threads of the threaded holes. The bolts also penetrate the wall of the industrial boiler flue. The gun barrel 9 is fixed to the wall of the industrial boiler flue by the first flange 10, the second flange 11 and the bolts.

[0024] The beneficial effects obtained by the nozzle 1, spiral guide plate 2, two spiral arc guide plates 3, diffusion cone 4, and pipeline mechanism are as follows: When the powder passes through the spiral guide plate 2 and spiral arc guide plate 3, it will move in a spiral motion along the cross-section of the spiral guide plate 2 and spiral arc guide plate 3. The spiral motion increases the centrifugal force of the powder. The spiral guide plate 2, spiral arc guide plate 3, and diffusion cone 4 make the powder diffuse outward after entering the flue, thereby increasing the contact area between the powder and the flue gas. When the powder collides with the flue gas, it has a greater force to disrupt the flue gas, so that the powder reacts better with the flue gas. At the same time, the powder becomes more loose when passing through the diffusion cone 4 and will not be adsorbed together due to the friction between powder particles, thereby greatly improving the reaction efficiency and reducing the operating cost of the enterprise.

[0025] When this utility model is in use, the powder enters the elbow pipe 8 through the gun barrel 9, and then the powder is sprayed out from the nozzle 1. When the powder is sprayed out from the nozzle 1, it undergoes a spiral motion through the spiral guide plate 2 and the spiral arc guide plate 3, generating centrifugal force, which causes the powder to diffuse outward after entering the flue, thereby increasing the contact area between the powder and the flue gas. Furthermore, the collision between the powder and the flue gas has a greater force to disrupt the flue gas, and the powder becomes more loose when passing through the diffusion cone 4.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral cone powder spray gun, characterized in that, The nozzle (1) includes a spiral guide plate (2) on its inner wall. Two spiral arc guide plates (3) are provided on one side of the spiral guide plate (2), and the side walls of the two spiral arc guide plates (3) are spirally connected to the side wall of the spiral guide plate (2). A diffuser cone (4) is provided between the two spiral arc guide plates (3). A pipe mechanism is provided at the input end of the nozzle (1).

2. The spiral cone powder spray gun according to claim 1, characterized in that, The diffusion cone (4) includes a ring block (5), a large cone block (6) is provided on one side of the ring block (5), the ring block (5) and the large cone block (6) are both provided between two spiral arc guide plates (3), and a small cone block (7) is provided on the side of the ring block (5) away from the large cone block (6).

3. A spiral cone powder spray gun according to claim 2, characterized in that, The diameter of the large cone block (6) gradually narrows from the side close to the ring block (5) to the side away from the ring block (5), and the diameter of the small cone block (7) gradually narrows from the side close to the ring block (5) to the side away from the ring block (5).

4. A spiral cone powder spray gun according to claim 1, characterized in that, The diameter of the nozzle (1) gradually increases from the input end to the output end.

5. A spiral cone powder spray gun according to claim 1, characterized in that, The piping mechanism includes an elbow pipe (8) installed at the input end of the nozzle (1), and a gun barrel (9) is installed on the side of the elbow pipe (8) away from the nozzle (1). A fixing component is installed on the outer wall of one side of the gun barrel (9).

6. A spiral cone powder spray gun according to claim 5, characterized in that, The fixing assembly includes a first flange (10), which is installed on the side of the gun barrel (9) away from the elbow pipe (8). A second flange (11) is installed on the outer wall of the gun barrel (9). The gun barrel (9) is installed in the flue gas duct of the industrial boiler through the first flange (10) and the second flange (11).

Images