Hard alloy shunting block type spray welding composite atomizing disc

Abstract

The utility model relates to the field of composite atomizing discs, and discloses a hard alloy shunting block type spray welding composite atomizing disc which comprises an atomizing disc lower portion and an atomizing disc upper portion, the atomizing disc lower portion comprises a lower disc, a mounting column is arranged in the middle of the lower disc, and a mounting hole is formed in the upper surface of the mounting column. A first alloy spray welding layer is sprayed on the outer wall of the lower disc, a fixing assembly is arranged on the inner surface of the lower disc, a flow dividing block is arranged on the upper surface of the lower disc, the upper portion of the atomizing disc comprises an upper disc, and a second alloy spray welding layer is sprayed on the outer wall of the upper disc. According to the atomizing disc, the alloy spray welding layers are sprayed on the outer wall of the lower disc, the outer wall of the upper disc and the outer wall of the shunting block, and the spray welding layers are made of tungsten carbide-based, chromium carbide-based or nickel-chromium-based self-fluxing alloy and the like, so that the atomizing disc is high in hardness, strong in wear resistance and capable of effectively resisting erosive wear of slurry, the service life of the atomizing disc is guaranteed, and the cost of frequently replacing the atomizing disc is reduced.

Description

Technical Field

[0001] This utility model relates to the field of composite atomizing discs, and more particularly to a cemented carbide splitter type spray-welded composite atomizing disc. Background Technology

[0002] The working principle of the Sigger-type atomizing disc is to atomize liquid into extremely fine droplets through a high-speed rotating atomizing disc. Currently, the 220mm diameter Sigger-type atomizing discs used in the waste incineration industry are made of Hastelloy C276, which has the advantage of strong acid and alkali resistance, but low hardness, HRC30-35, which results in poor wear resistance of the atomizing disc.

[0003] When the atomizing disc rotates at high speed and the linear velocity of the outer wall reaches more than 90 meters per second, the particles in the slurry will impact and wear the inner surface of the atomizing disc and the edges of the upper and lower discs, causing wear on the inner surface of the disc and even leading to breakage. Ultimately, the atomizing disc will lose dynamic balance and become unusable. The atomizing disc is easily damaged during use and needs to be replaced frequently, which will cost a lot of manpower and money.

[0004] To address these issues, a cemented carbide splitter block type spray welding composite atomizing disc is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cemented carbide splitter block type spray welding composite atomizing disc, which aims to improve the problems of low hardness and poor wear resistance of the existing atomizing disc. During use, the surface will be worn or even damaged due to the slurry erosion, which requires frequent replacement and consumes time and costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hard alloy diverter block type spray-welded composite atomizing disc, comprising a lower part of the atomizing disc and an upper part of the atomizing disc, wherein the lower part of the atomizing disc includes a lower plate, a mounting post is provided in the middle of the lower plate, a mounting hole is provided on the upper surface of the mounting post, an alloy spray-welded layer is sprayed on the outer wall of the lower plate, a fixing component is provided on the inner surface of the lower plate, and a diverter block is provided on the upper surface of the lower plate.

[0007] As a further description of the above technical solution:

[0008] The upper part of the atomizing disc includes an upper plate, and the outer wall of the upper plate is coated with an alloy spray-welded layer II.

[0009] As a further description of the above technical solution:

[0010] The fixing component includes fixing bolts, a fixing hole 1 is provided through the upper surface of the lower plate, a fixing hole 2 is provided through the upper surface of the diverter block, and a fixing hole 3 is provided through the upper surface of the upper plate.

[0011] As a further description of the above technical solution:

[0012] The diverter block is located between the lower plate and the upper plate, and the diverter block is attached to the upper surface of the lower plate and the diverter block is attached to the lower surface of the upper plate.

[0013] As a further description of the above technical solution:

[0014] The fixing bolts pass through and are threaded into the inner walls of fixing holes one, two, and three.

[0015] As a further description of the above technical solution:

[0016] The middle part of the mounting hole is columnar, and the front and rear parts of the mounting hole are square protrusions.

[0017] As a further description of the above technical solution:

[0018] The mounting post protrudes from the upper surface of the upper plate.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, an alloy spray-welded layer is sprayed onto the lower plate, upper plate, and outer wall of the distributor block. These spray-welded layers are made of materials such as tungsten carbide-based, chromium carbide-based, or nickel-chromium-based self-fluxing alloys, which have high hardness and strong wear resistance, effectively resisting the scouring and wear of the slurry, ensuring the service life of the atomizing disc, and reducing the cost of frequent replacement of the atomizing disc.

[0021] 2. In this utility model, a modular design is adopted, with the lower part of the atomizing disc, the splitter block and the upper part of the atomizing disc being independent. When the device is damaged, only the fixing bolts need to be removed to easily separate the parts. This means that only the damaged module needs to be replaced, without replacing the whole device, thus reducing the replacement cost. Attached Figure Description

[0022] Figure 1 This is a front view of the three-dimensional structure of the overall device in this utility model;

[0023] Figure 2 This is a three-dimensional structural breakdown diagram of the overall device in this utility model;

[0024] Figure 3 This is a partial schematic diagram of the three-dimensional structure of the diverter block in this utility model.

[0025] Legend:

[0026] 1. Lower part of atomizing disc; 2. Diverter block; 3. Upper part of atomizing disc; 11. Lower plate; 12. Mounting post; 13. Mounting hole; 14. Alloy spray-welded layer one; 31. Upper plate; 32. Alloy spray-welded layer two; 41. Fixing bolt; 42. Fixing hole one; 43. Fixing hole two; 44. Fixing hole three. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a cemented carbide splitter type spray welding composite atomizing disc. The atomizing disc is a Siggs type atomizing disc, including a lower part 1 and an upper part 3. The lower part 1 includes a lower plate 11, which is the base of the atomizing disc. A mounting post 12 is provided in the middle of the lower plate 11. The center of the mounting post 12 and the lower plate 11 are on the same axis. The surface of the mounting post 12 is smooth, and a mounting hole 1 is provided on the upper surface of the mounting post 12. 3. The mounting hole 13 can be connected to the main shaft of an external rotary atomizer, facilitating the rotation of the atomizing disc by the main shaft of the subsequent rotary atomizer. The outer wall of the lower plate 11 is coated with an alloy spray-welded layer 14. The alloy spray-welded layer 14 can be made of various materials (such as tungsten carbide-based spray-welded layer, chromium carbide-based spray-welded layer, nickel-chromium-based self-fluxing alloy spray-welded layer, etc.). These spray-welded layers have high hardness and high wear resistance. The inner surface of the lower plate 11 is provided with fixing components. The upper surface of the atomizing disk 1 is provided with a diversion block 2. Multiple diversion blocks 2 are provided, arranged in a circular array with the center line of the lower disk 11 as the origin. The surfaces of the diversion blocks 2 near the center of the lower disk 11 and away from the center of the lower disk 11 are both curved surfaces, which can guide the slurry. The upper part 3 of the atomizing disk includes an upper disk 31, which is the top disk of the atomizing disk. A through hole is opened at the center of the upper surface of the upper disk 31. The mounting column 12 protrudes from the upper surface of the through hole. The slurry is added through the gap between the through hole and the mounting column 12, and under the influence of the centrifugal force generated by the rotation, it is discharged in a mist from the gap of the diversion block 2. The slurry addition technology is existing technology and can be implemented by those skilled in the art. Since it is existing technology, it will not be described in detail in this case. The outer wall of the upper disk 31 is sprayed with an alloy spray welding layer 2 32. The alloy spray welding layer 2 32 is made of the same material as the alloy spray welding layer 14, and the outer wall of the diversion block 2 is uniformly sprayed with the alloy spray welding layer 2 32.

[0029] Reference Figure 1 - Figure 2The diverter block 2 is located between the lower plate 11 and the upper plate 31. The upper surface of the diverter block 2 is in contact with the lower plate 11, and the lower surface of the diverter block 2 is in contact with the upper plate 31, which can maintain sealing and stability. The middle part of the mounting hole 13 is set as a column, and the front and rear parts of the mounting hole 13 are set as square protrusions. The mounting column 12 protrudes from the upper surface of the upper plate 31.

[0030] Reference Figure 1 - Figure 2 The fixing components include fixing bolts 41, fixing hole 42 is provided through the upper surface of the lower plate 11, fixing hole 43 is provided through the upper surface of the diverter block 2, and fixing hole 44 is provided through the upper surface of the upper plate 31. The fixing bolts 41 are engaged with fixing holes 42, 43 and 44.

[0031] Reference Figure 1 - Figure 2 The fixing bolt 41 passes through and is threaded into the inner wall of fixing hole 1 42, fixing hole 2 43 and fixing hole 3 44. The fixing bolt 41 can fix the lower plate 11, the upper plate 31 and the diverter block 2 together. There are also multiple sets of fixing bolts 41, arranged in a circular array with the center line of the lower plate 11 as the origin.

[0032] Working principle: The mounting hole 13 on the mounting post 12 of the lower part 1 of the atomizing disc is connected to the main shaft of the rotary atomizer. The columnar structure in the middle of the mounting hole 13 is adapted to the main shaft. The square protrusion design at the front and rear can effectively transmit torque and ensure that the atomizing disc rotates synchronously with the main shaft at high speed. When the rotary atomizer is started, the main shaft drives the lower plate 11 of the lower part 1 of the atomizing disc to start rotating at high speed, which in turn drives the splitter block 2 and the upper plate 31 to rotate.

[0033] The upper plate 31 of the upper part 3 of the atomizing plate has a through hole at its center. The mounting column 12 protrudes from the upper surface of the through hole. During operation, the slurry is added through the gap between the through hole and the mounting column 12. Under the action of centrifugal force generated by the high-speed rotation of the atomizing plate, the slurry gains the power to diffuse in all directions and begins to flow in the atomizing plate. Multiple diverting blocks 2 are distributed in a circular array on the upper surface of the lower plate 11. Under the continuous action of centrifugal force, the slurry diffuses in all directions and enters the gap between the diverting blocks 2. The diverting blocks 2 divide and guide the slurry, making it flow faster in the gap. Finally, it is discharged in a mist from the gap of the diverting blocks 2, achieving uniform atomization.

[0034] The alloy spray-welded layer 14 on the outer wall of the lower plate 11, and the alloy spray-welded layer 32 on the outer wall of the upper plate 31 and the flow divider 2 play a key role in wear resistance. These spray-welded layers are made of materials such as tungsten carbide-based, chromium carbide-based or nickel-chromium-based self-fluxing alloys. They have high hardness and strong wear resistance, which can effectively resist the scouring and wear caused by the high-speed flow of slurry, extend the service life of the atomizing disc, and ensure the stability of atomization performance.

[0035] The fixing bolt 41 in the fixing assembly passes through fixing hole 1 42, fixing hole 2 43 and fixing hole 3 44 and is threaded together, which can fix the lower plate 11, the upper plate 31 and the diverter block 2 together.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cemented carbide splitter type spray welding composite atomizing disk, comprising a lower part (1) of the atomizing disk and an upper part (3) of the atomizing disk, characterized in that: The lower part (1) of the atomizing disc includes a lower plate (11), a mounting post (12) is provided in the middle of the lower plate (11), a mounting hole (13) is provided on the upper surface of the mounting post (12), an alloy spray welding layer (14) is sprayed on the outer wall of the lower plate (11), a fixing component is provided on the inner surface of the lower plate (11), and a flow divider (2) is provided on the upper surface of the lower plate (11).

2. The cemented carbide splitter block type spray welding composite atomizing disk according to claim 1, characterized in that: The upper part (3) of the atomizing disk includes an upper disk (31), and the outer wall of the upper disk (31) is coated with an alloy spray-welded layer two (32).

3. The cemented carbide splitter block type spray welding composite atomizing disk according to claim 2, characterized in that: The fixing assembly includes a fixing bolt (41), a fixing hole 1 (42) is provided through the upper surface of the lower plate (11), a fixing hole 2 (43) is provided through the upper surface of the diverter block (2), and a fixing hole 3 (44) is provided through the upper surface of the upper plate (31).

4. The cemented carbide splitter block type spray welding composite atomizing disk according to claim 2, characterized in that: The diverter block (2) is located between the lower plate (11) and the upper plate (31). The upper surface of the diverter block (2) is attached to the lower plate (11), and the lower surface of the diverter block (2) is attached to the upper plate (31).

5. The cemented carbide splitter block type spray welding composite atomizing disk according to claim 3, characterized in that: The fixing bolt (41) passes through and is threaded into the inner walls of fixing hole one (42), fixing hole two (43) and fixing hole three (44).

6. The cemented carbide splitter block type spray welding composite atomizing disk according to claim 1, characterized in that: The middle part of the mounting hole (13) is columnar, and the front and rear parts of the mounting hole (13) are square protrusions.

7. The cemented carbide splitter block type spray welding composite atomizing disk according to claim 2, characterized in that: The mounting post (12) protrudes from the upper surface of the upper plate (31).

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