CN204816963U - Atomizing disk - Google Patents

Abstract

The utility model provides an atomizing disc, which is used for rotary atomizing slurry, which comprises: a top disc, which is an annular disc with a circular opening in the center; a spray distribution disc, which is a circular disc and has a There is a boss, the boss passes through the circular opening in the center of the top plate, a gap for the slurry to flow in is formed between the top plate and the boss, and the inside of the boss is provided with a The opening for installing the motor drive shaft; the distribution block, which is located between the top plate and the spray distribution plate, and is evenly distributed along the circumference, and the gap between the distribution blocks constitutes the outlet of the atomized slurry; and the spray distribution Surfaces of the discs in contact with the slurry are formed with an abrasion resistant coating. The atomizing disc provided by the utility model has good wear resistance, long service life and high cost-efficiency ratio.

Description

an atomizing disc

technical field

The utility model relates to the technical field of waste incineration flue gas purification, in particular to an improved wear-resistant atomizing disc.

Background technique

Rotary spraying method is commonly used in waste incineration treatment plants to desulfurize flue gas. The key to the rotary spraying method is that lime slurry as an absorbent forms a droplet state, and then contacts with flue gas for desulfurization. The core device of the rotary spray method is the rotary atomizer, and the atomizing disc is the core component of the desulfurization atomizer, which is installed on the rotary atomizer to spray and atomize the lime slurry. When the absorbing slurry is sent to the high-speed rotating disk, under the action of centrifugal force, the absorbing slurry stretches as a film on the placement surface, and moves to the edge of the disk at an increasing speed, and is dispersed into mist droplets when leaving the edge. Because the lime slurry is highly corrosive and has certain solid particles, coupled with the high-speed rotation of the atomizing disc (such as 1000 rpm), the undissolved lime particles in the lime slurry will strongly wash the disc body, Abrasion of the atomizing disc affects the life of the atomizing disc, the flow velocity of the lime slurry, and the dynamic balance performance of the atomizing disc, resulting in large vibrations and a decline in the atomization effect, which in turn affects the operation of the rotary atomizer and even the incineration plant. The operation is affected, and when the atomizing disc is worn, it is difficult to repair and the cost of replacement is relatively high.

Therefore, it is necessary to propose a new atomizing disc to solve the deficiencies of the prior art.

Utility model content

A series of concepts in simplified form are introduced in the content of the utility model, which will be further explained in detail in the specific embodiment. The utility model content part of the utility model does not mean trying to limit the key features and essential technical features of the claimed technical solution, nor does it mean trying to determine the protection scope of the claimed technical solution.

In order to overcome the current existing problems, the utility model provides an atomizing disc for rotary atomizing slurry, which includes: a top disc, which is an annular disc with a circular opening in the center; a spray distribution disc, which It is a circular disk, and the central area is provided with a boss, and the boss passes through the circular opening in the center of the top disk, and a gap for slurry inflow is formed between the top disk and the boss, And the inside of the boss is provided with an opening for installing the motor drive shaft; the distribution block is located between the top plate and the spray distribution plate, and is evenly distributed along the circumference, and the gap between the distribution blocks constitutes the atomization an outlet for the slurry; and the surface of the spray distribution plate in contact with the slurry is formed with a wear-resistant coating.

Preferably, the wear-resistant coating is ceramics, alloys, oxides, carbides, and/or nitrides.

Preferably, the wear-resistant coating is formed by plasma spraying, arc spraying, flame spraying, chemical vapor deposition and/or electroplating.

Preferably, it is characterized in that the wear-resistant coating has 1-3 layers.

Preferably, the number of allocation blocks is 10-18.

Preferably, the top plate, the distribution block and the spray distribution plate are correspondingly provided with pin holes, and are fixed by pins and bolts.

According to the atomizing disc provided by the utility model, by adopting the method of ion spraying, arc spraying and flame spraying on the main wear surface of the atomizing disc body, ceramics, alloys, oxides, carbides, etc. are sprayed on the metal surface. Various wear-resistant materials such as nitrides wear the wear-resistant coating first during use and wear. When the coating is worn, the base material still has good wear resistance. Therefore, the atomizing disc provided by the utility model has good wear resistance and long service life.

In addition, because the utility model does not change the basic structure of the existing atomizing disc, the production cost is relatively low and the cost-effectiveness ratio is relatively high.

Description of drawings

The following drawings of the utility model are used as a part of the utility model for understanding the utility model. Embodiments of the utility model and description thereof are shown in the accompanying drawings, which are used to explain the principle of the utility model.

In the attached picture:

Fig. 1 shows a cross-sectional view of an atomizing disc proposed by an embodiment of the present invention.

Detailed ways

In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

In order to thoroughly understand the utility model, the detailed structure and steps will be provided in the following description, so as to explain the technical solution proposed by the utility model. The preferred embodiments of the utility model are described in detail as follows, but in addition to these detailed descriptions, the utility model can also have other implementations.

Fig. 1 shows a cross-sectional view of an atomizing disc proposed by an embodiment of the present invention. The atomizing disc provided by the present invention will be described in detail below in conjunction with FIG. 1 .

As shown in FIG. 1 , the atomizing disc 100 of this embodiment includes a top disc 1 , a distribution block 2 , a spray distribution disc 3 and a wear-resistant coating 6 .

The top disk 1 is an annular disk with a circular opening 10 in the central area. As an example, the top disk 1 can be made of Hastelloy alloy with high hardness and good corrosion resistance as the disk body material.

The distribution blocks 2 are located between the top plate 1 and the spray distribution plate 3, and are evenly distributed along the circumference, and the gap between the distribution blocks 2 constitutes the outlet of the atomized slurry. The distributing block 2 can be selected in a suitable shape and number according to needs. As an example, the distributing block 2 is strip-shaped, and the quantity is 10-18.

The spray distribution plate 3 is a circular plate, and a boss 30 is arranged in the central area, and an opening 31 for installing a motor drive shaft is arranged inside the boss 30 . As an example, the spray disc 3 can be made of Hastelloy alloy with high hardness and good corrosion resistance as the disc body material.

In this embodiment, the top plate 1 , the distribution block 2 and the spray distribution plate 3 are correspondingly provided with pin holes, and the three are fixed by screws 5 passing through the pin holes and fixing bolts. Wherein, the boss 30 on the spray distribution plate 3 passes through the circular opening 10 in the center of the top plate 1, and there is a gap 11 between the boss 30 and the top plate 1 for the slurry to flow in; the distribution block 2 is located between the top plate 1 and the top plate 1. The spray is distributed evenly between the distribution plates 3 along the circumference, and the gap between the distribution blocks 2 constitutes the outlet of the atomized slurry.

In this embodiment, in order to improve the wear resistance of the atomizing disc, a wear-resistant coating 6 is formed on the surface of the spray distribution disc 3 in contact with the slurry, that is, the surfaces of areas A, B, C, and D in FIG. 1 . Wear-resistant coating 6 can be various wear-resistant materials such as ceramics, alloys, oxides, carbides, nitrides, etc., and its formation method can adopt various physical and chemical methods, such as plasma spraying, arc spraying, flame spraying, chemical vapor deposition , electroplating and other methods.

Further, in order to improve the wear-resistant effect, multiple layers of wear-resistant coatings, such as 1-3 layers, can be formed as required.

The action process of the atomizing disc 100 provided in this embodiment: when the atomizing disc 100 is working, it rotates at a high speed driven by the drive shaft of the motor, and at the same time, the slurry flows in from the gap 11 between the top disc 1 and the spray distribution disc 3 , Under the action of centrifugal force, the slurry stretches into a thin film on the placement surface, and moves toward the edge of the disk at an increasing speed. It is understood that the edge of the love is dispersed into mist droplets, and the mist droplets are atomized from the gap between the distribution blocks 2. The slurry is discharged from the outlet and enters the subsequent process.

The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of illustration and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, those skilled in the art can understand that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teaching of the utility model, and these variations and modifications all fall within the scope of the utility model. within the scope of protection. The protection scope of the utility model is defined by the appended claims and their equivalent scope.

Claims (6)

1. an atomizing disk, for rotary-atomizing slurries, is characterized in that, comprising:

Top disc (1), it is annular disc, and center has round hole (10);

Spraying distribution plate (3), it is circular discs, and central area is provided with boss (30), described boss (30) is through the round hole (10) at the center of described top disc (1), be formed with the gap (11) flowed into for slurries between described top disc (1) and described boss (30), and described boss (30) inside is provided with the perforate (31) for mounted motor driving shaft;

Allocation block (2), it is positioned between described top disc (1) and spraying distribution plate (3), and is circumferentially uniformly distributed, and the gap between described allocation block (2) forms the outlet of atomization slurry; With

Described spraying distribution plate (3) is formed with wear-resistant coating (6) with the surface of slurry liquid contacts.

2. atomizing disk according to claim 1, is characterized in that, described wear-resistant coating is pottery, alloy, oxide, carbide or nitride.

3. atomizing disk according to claim 2, is characterized in that, described wear-resistant coating is formed by plasma spraying, electric arc spraying, flame-spraying, chemical vapour deposition (CVD) and/or plating.

4. the atomizing disk according to claim 1-3 any one, is characterized in that, described wear-resistant coating is 1 ~ 3 layer.

5. atomizing disk according to claim 1, is characterized in that, the quantity of described allocation block is 10 ~ 18.

6. atomizing disk according to claim 1, is characterized in that, described top disc (1), allocation block (2) and spraying distribution plate (3) correspondence are provided with pin-and-hole, and are fixed by pin and bolt.