Hard metal spray welding composite atomizer disc

Abstract

The utility model relates to the field of atomization disc discloses a hard alloy spray welding composite atomization disc, including atomization disc upper portion, atomization disc upper portion's bottom is provided with atomization disc middle part, atomization disc middle part's bottom is provided with atomization disc lower part, the atomization disc upper portion includes atomization disc upper disc, the outer wall of atomization disc upper disc is opened with mounting hole in the circumferential array, the outer wall of atomization disc upper disc is sprayed with spray welding layer, atomization disc middle part includes wear -resisting disc, the inner wall of mounting hole is provided with the sleeve, the inner wall of sleeve is provided with ceramic pipe, atomization disc lower part includes atomization disc lower disc. In the utility model, can significantly improve the wear resistance of device, prolong the service life of atomization disc, atomization disc upper disc outer wall spray the spray welding layer of hardness greater than HRC60, such as nickel base alloy, tungsten carbide coating, can effectively resist the impact wear and tear with calcium carbonate and other particles when high -speed rotation, reduce the replacement frequency, reduce the labor and cost input.

Description

Technical Field

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

[0002] The working principle of the atomizing disc is mainly to generate centrifugal force through high-speed rotation, which disperses the liquid into tiny droplets. These droplets spread rapidly in the air, thereby achieving the atomization effect of the liquid.

[0003] In the hazardous waste incineration industry, boilers on the treatment line are generally not equipped with soot blowers. Even if soot blowers are equipped, workers cannot use them continuously because it would consume a lot of labor. This results in a high ash content in the flue gas entering the deacidification tower. Some of the ash forms particles such as calcium carbonate after deacidification and comes into contact with the outer wall of the atomizing disc.

[0004] The most common material used for atomizing discs is Hastelloy C276, which has the advantage of strong acid and alkali resistance, but low hardness, generally HRC30-35. This results in poor wear resistance during use. When the atomizing disc rotates at high speed, with the outer wall linear velocity reaching more than 135 m / s, the calcium carbonate particles and the high-speed rotating atomizing disc move very quickly relative to each other, causing impact wear on the outer surface of the atomizing disc, which in turn leads to rapid wear of the atomizing disc body. The upper part of the atomizing disc is the most severely worn.

[0005] Wear-out atomizing discs can lose dynamic balance and become unusable, requiring frequent replacements. This not only incurs significant labor costs but also increases overall expenses.

[0006] To address these issues, a cemented carbide spray-welded composite atomizing disc is proposed. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a cemented carbide spray-welded composite atomizing disc, which aims to improve the problem that the surface of the atomizing disc is easily worn and scrapped, requiring frequent replacement and increasing costs in the prior art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a hard alloy spray-welded composite atomizing disc, including an upper part of the atomizing disc, a middle part of the atomizing disc is provided at the bottom end of the upper part of the atomizing disc, and a lower part of the atomizing disc is provided at the bottom end of the middle part of the atomizing disc.

[0009] The upper part of the atomizing disc includes an upper atomizing disc, and the outer wall of the upper atomizing disc has mounting holes arranged in a circumferential array. The outer wall of the upper atomizing disc is coated with a spray welding layer.

[0010] As a further description of the above technical solution:

[0011] The atomizing disc includes a wear-resistant disc in the middle, and a sleeve is provided on the inner wall of the mounting hole. A ceramic tube is provided on the inner wall of the sleeve.

[0012] As a further description of the above technical solution:

[0013] The lower part of the atomizing disc includes a lower atomizing disc plate, a positioning post is provided in the middle section of the upper surface of the lower atomizing disc plate, and a fixing bolt is installed on the inner surface of the lower atomizing disc plate.

[0014] As a further description of the above technical solution:

[0015] The wear-resistant disc is inserted into the outer wall of the positioning post. The lower surface of the wear-resistant disc is in contact with the bottom end of the inner surface of the lower plate of the atomizing disc, and the upper surface of the wear-resistant disc is in contact with the lower surface of the upper plate of the atomizing disc.

[0016] As a further description of the above technical solution:

[0017] A through groove is provided on the upper surface of the atomizing disc.

[0018] As a further description of the above technical solution:

[0019] The centers of the upper atomizing disc, the wear-resistant disc, and the lower atomizing disc are located on the same axis, and the fixing bolts are installed on the inner surface of the upper atomizing disc.

[0020] As a further description of the above technical solution:

[0021] The lower surface of the upper atomizing disc is in contact with the upper surface of the lower atomizing disc.

[0022] As a further description of the above technical solution:

[0023] The ceramic tube passes through the mounting hole.

[0024] This utility model has the following beneficial effects:

[0025] 1. In this utility model, the wear resistance of the device can be significantly improved and the service life of the atomizing disc can be extended. The outer wall of the atomizing disc is coated with a sprayed layer with a hardness greater than HRC60, such as nickel-based alloy or tungsten carbide coating, which can effectively resist the impact and wear of particles such as calcium carbonate during high-speed rotation, reduce the replacement frequency, and reduce labor and cost input.

[0026] 2. In this utility model, the hard alloy spray-welded composite atomizing disc is connected by fixing the upper and lower atomizing discs with fixing bolts. Therefore, when the upper atomizing disc is damaged, it can be disassembled and replaced separately, which effectively reduces maintenance costs. Attached Figure Description

[0027] Figure 1This is a front view of the three-dimensional structure of the overall device in this utility model;

[0028] Figure 2 This is a three-dimensional structural diagram of the upper part of the atomizing disc and the ceramic tube in this utility model.

[0029] Figure 3 This is a three-dimensional structural diagram of the lower part of the atomizing disc and the wear-resistant disc in this utility model.

[0030] Legend:

[0031] 1. Upper part of atomizing disc; 2. Middle part of atomizing disc; 3. Lower part of atomizing disc; 11. Upper plate of atomizing disc; 12. Spray-welded layer; 101. Mounting hole; 21. Wear-resistant disc; 22. Ceramic tube; 23. Tube sleeve; 31. Lower plate of atomizing disc; 32. Fixing bolt; 33. Positioning post. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 This utility model provides an embodiment of a hard alloy spray-welded composite atomizing disc, including an upper atomizing disc 1, a middle atomizing disc 2 at the bottom of the upper atomizing disc 1, and a lower atomizing disc 3 at the bottom of the middle atomizing disc 2. The upper atomizing disc 1, the middle atomizing disc 2, and the lower atomizing disc 3 are assembled from top to bottom to form a hard alloy spray-welded composite atomizing disc. The hard alloy spray-welded composite atomizing disc is installed at the bottom of a rotating atomizer. When the rotating atomizer is started, it will drive the hard alloy spray-welded composite atomizing disc to rotate at high speed.

[0034] Reference Figures 1-3The upper part 1 of the atomizing disk includes an upper atomizing disk 11. The outer wall of the upper atomizing disk 11 has mounting holes 101 arranged in a circular array. The mounting holes 101 are evenly distributed on the outer side of the upper atomizing disk 11. The outer wall of the upper atomizing disk 11 is coated with a sprayed welding layer 12. The sprayed welding layer 12 can be a nickel-based alloy sprayed welding layer, a tungsten carbide sprayed welding layer, a cobalt-based alloy overlay layer, or other metal coatings with a hardness greater than HRC60, to improve the wear resistance and impact resistance of the upper atomizing disk 11 and ensure its service life. The sprayed welding layer 12 is distributed on the upper surface of the upper atomizing disk 11 and the upper half of the side surface of the upper atomizing disk 11. The middle part 2 of the atomizing disk includes a wear-resistant disk 21. The middle of the wear-resistant disk 21 has a protrusion for alignment and to ensure stable subsequent connection. The interior of the protrusion is hollow. Mounting holes 101... The inner wall of 01 is provided with a sleeve 23, and the inner wall of the sleeve 23 is provided with a ceramic tube 22. When in use, the hard alloy spray welding composite atomizing disc will rotate at high speed, and the slurry will be sprayed out in a mist form from the ceramic tube 22 under the action of centrifugal force. The sleeve 23 and the ceramic tube 22 are installed in the mounting hole 101, and the installation process of the sleeve 23 and the ceramic tube 22 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 lower part 3 of the atomizing disc includes the lower atomizing disc 31. The middle section of the upper surface of the lower atomizing disc 31 is provided with a positioning post 33 for aligning with the wear-resistant disc 21. The inner surface of the lower atomizing disc 31 is provided with fixing bolts 32. There are multiple sets of fixing bolts 32, which are distributed in a circumferential shape at the position of the lower atomizing disc 31 away from the center.

[0035] Reference Figures 1-3 The wear-resistant disc 21 is inserted into the outer wall of the positioning post 33. The lower surface of the wear-resistant disc 21 contacts the bottom end of the inner surface of the lower atomizing disc 31, and the inner surface of the wear-resistant disc 21 fits against the outer wall of the positioning post 33 for stability. The upper surface of the wear-resistant disc 21 contacts the lower surface of the upper atomizing disc 11. When the upper atomizing disc 11 and the lower atomizing disc 31 are installed together, the wear-resistant disc 21 will be tightly clamped in the middle to ensure fixation. The upper surface of the wear-resistant disc 21 is higher in the middle and lower around the edges. A through groove is opened through the upper surface of the upper atomizing disc 11. The through groove is located at the center of the upper surface of the upper atomizing disc 11. The slurry enters the hard material through the through groove. The alloy spray-welded composite atomizing disc, under the action of centrifugal force, sprays out in a mist from the ceramic tube 22 along the surface of the wear-resistant disc 21. The centers of the upper atomizing disc 11, the wear-resistant disc 21, and the lower atomizing disc 31 are located on the same axis. The fixing bolts 32 are installed on the inner surface of the upper atomizing disc 11. The fixing bolts 32 are installed from bottom to top, which can fix the upper atomizing disc 11 and the lower atomizing disc 31 together and maintain the stability of the wear-resistant disc 21. The lower surface of the upper atomizing disc 11 and the upper surface of the lower atomizing disc 31 are in contact, and the contact points are tightly fitted to ensure a seal. The ceramic tube 22 passes through the mounting hole 101.

[0036] Working principle: When the device is in use, the hard alloy spray welding composite atomizing disc will rotate at high speed. The slurry enters through the through groove opened on the upper surface of the atomizing disc 11. The through groove is located at the center of the upper surface of the atomizing disc 11.

[0037] Under the action of centrifugal force, the slurry flows along the surface of the wear-resistant disc 21, then enters the ceramic tube 22, and finally is sprayed out in a mist from the ceramic tube 22, achieving the atomization effect of the liquid.

[0038] The spray-welded layer 12 on the outer wall of the upper atomizing disc 11 can enhance the wear resistance and impact resistance of the upper atomizing disc 11, reduce wear caused by relative movement with particles such as calcium carbonate, and ensure the service life of the hard alloy spray-welded composite atomizing disc. The positioning post 33 of the lower part 3 of the atomizing disc is inserted and matched with the wear-resistant disc 21. The fixing bolt 32 fixes the upper atomizing disc 11 and the lower atomizing disc 31, ensuring the stability of the entire atomizing disc structure and continuously and efficiently completing the atomization work.

[0039] 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 spray-welded composite atomizing disc, comprising an upper part (1) of the atomizing disc, characterized in that: The bottom end of the upper part (1) of the atomizing disk is provided with the middle part (2) of the atomizing disk, and the bottom end of the middle part (2) of the atomizing disk is provided with the lower part (3) of the atomizing disk; The upper part (1) of the atomizing disk includes an upper atomizing disk (11), and the outer wall of the upper atomizing disk (11) is provided with mounting holes (101) in a circumferential array. The outer wall of the upper atomizing disk (11) is coated with a spray welding layer (12).

2. The cemented carbide spray-welded composite atomizing disc according to claim 1, characterized in that: The middle part (2) of the atomizing disc includes a wear-resistant disc (21), and the inner wall of the mounting hole (101) is provided with a sleeve (23), and the inner wall of the sleeve (23) is provided with a ceramic tube (22).

3. The cemented carbide spray-welded composite atomizing disc according to claim 2, characterized in that: The lower part (3) of the atomizing disc includes a lower atomizing disc (31), a positioning post (33) is provided in the middle section of the upper surface of the lower atomizing disc (31), and a fixing bolt (32) is installed on the inner surface of the lower atomizing disc (31).

4. The cemented carbide spray-welded composite atomizing disc according to claim 3, characterized in that: The wear-resistant disc (21) is inserted into the outer wall of the positioning post (33). The lower surface of the wear-resistant disc (21) is in contact with the bottom end of the inner surface of the lower atomizing disc (31), and the upper surface of the wear-resistant disc (21) is in contact with the lower surface of the upper atomizing disc (11).

5. The cemented carbide spray-welded composite atomizing disc according to claim 1, characterized in that: A through groove is provided on the upper surface of the atomizing disc (11).

6. The cemented carbide spray-welded composite atomizing disc according to claim 3, characterized in that: The centers of the upper atomizing disc (11), the wear-resistant disc (21), and the lower atomizing disc (31) are located on the same axis, and the fixing bolt (32) is installed on the inner surface of the upper atomizing disc (11).

7. The cemented carbide spray-welded composite atomizing disc according to claim 2, characterized in that: The lower surface of the upper atomizing disk (11) is in contact with the upper surface of the lower atomizing disk (31).

8. The cemented carbide spray-welded composite atomizing disc according to claim 2, characterized in that: The ceramic tube (22) passes through the mounting hole (101).

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