Centrifugal airflow type atomizer

Abstract

The utility model relates to the technical field of atomizing equipment, and discloses a centrifugal airflow type atomizer which comprises an atomizing disc, the atomizing disc is provided with an annular wall face, the annular wall face extends in the axial direction of the atomizer, an opening is formed in one end of the annular wall face, and when the atomizing disc rotates in the axial direction of the atomizing disc, the annular wall face is opened. The feed liquid in the atomizing disc is distributed on the annular wall surface under the action of centrifugal force, and is separated and diffused at the opening; the atomizer further comprises an airflow channel which is arranged on the outer side of the annular wall face and extends in the axial direction of the atomizer, and one end of the airflow channel extends to the opening, so that airflow collides with material liquid diffused at the opening after being exhausted through the airflow channel. According to the centrifugal airflow type atomizer, the atomization effect is improved, and the centrifugal airflow type atomizer can meet the industrial requirement when low-viscosity feed liquid is atomized into superfine material mist and ultrahigh-viscosity feed liquid is atomized into material mist with the average particle size.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization equipment, in particular to a centrifugal air-flow atomizer. Background Art

[0002] Centrifugal atomizers are widely used in industrial production and are devices for atomizing liquid materials into fine droplets. Its principle is to add liquid material to a rotating atomizing disk at high speed, and the liquid is split into droplets under the action of centrifugal force. Specifically, on the surface of the atomizing disk, the liquid spreads in a thin film under the action of centrifugal force and detaches from the atomizing disk and splits at the edge of the atomizing disk. The size of the atomized droplets depends on the circumferential linear velocity and the feeding rate, and is also related to physical property factors such as the density and viscosity of the liquid material.

[0003] The centrifugal air-flow atomizer is based on the atomizing disk and is provided with an air-flow ejection device. An air flow with a certain pressure acts on the liquid material that has detached from the atomizing disk, and the liquid material is impacted by the air flow and split into finer droplets, resulting in a better atomization effect.

[0004] However, in the case of some special liquid materials, for example, one case is to atomize a low-viscosity liquid material into ultra-fine atomized mist, and another case is to atomize an ultra-high-viscosity liquid material into atomized mist with an average particle size. The existing centrifugal air-flow atomizers are difficult to obtain ideal effects and cannot meet industrial requirements. Summary of the Utility Model

[0005] Aiming at the technical problems raised in the above background art, the utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a centrifugal air-flow atomizer, which can atomize liquid materials with viscosity to meet industrial requirements.

[0006] A centrifugal air-flow atomizer according to the utility model is provided;

[0007] In some examples of the utility model, the centrifugal air-flow atomizer includes an atomizing disk, the atomizing disk has an annular wall surface, the annular inner wall surface extends along the axial direction of the atomizer and forms an opening at one end of the annular inner wall surface. When the atomizing disk rotates along its axial direction, the liquid material in the atomizing disk is distributed on the annular inner wall surface under the action of centrifugal force and detaches and diffuses at the opening.

[0008] It further includes an air-flow channel, the air-flow channel is arranged outside the annular inner wall surface and extends along the axial direction of the atomizer, and one end extends to the opening, so that the air flow discharged through the air-flow channel collides with the liquid material diffused at the opening.

[0009] The centrifugal airflow atomizer designed in this way is different from traditional atomizers in that it utilizes an atomizing disk with a specific structure, namely an atomizing disk with an annular wall. This atomizing disk follows the principle of liquid breakup by high-speed air injection. By using the structure of the annular wall, the liquid material forms a very thin liquid film on the annular wall. After the liquid film detaches at the open end, it is impacted by the high-speed airflow ejected from the airflow channel and quickly mixes with the high-speed airflow near the open end. The liquid film becomes unstable and breaks up into droplets.

[0010] In this atomization process, the atomizing disk not only serves as a device for ejecting the liquid material, but more importantly, as a film former for the liquid material, forming a liquid film with a uniform thickness on the annular wall, creating very ideal conditions for the operation of breaking up into droplets by the impact of the airflow.

[0011] It should be noted that generally, the atomizing disk is used in an inverted cup mode, that is, the open end of the atomizing disk faces the direction of gravity, and the liquid film is also affected by gravity during the formation process.

[0012] In some examples of the present utility model, the atomizing disk further has a disk body, which is located inside the annular wall and is relatively fixed to the atomizing disk, used for radially distributing the liquid material in the atomizing disk, and there is a distance between the disk body and the open end.

[0013] The purpose of setting the disk body is as follows: The liquid material in the atomizing disk is usually introduced through a conduit or passage. After the liquid material is introduced into the atomizing disk, it is in an aggregated state and cannot form a uniform liquid film in the atomizing disk. The disk body is used to receive the liquid material introduced into the atomizing disk. Since the disk body is relatively fixed to the atomizing disk, it will rotate with the atomizing disk. During the rotation process, the liquid material is distributed on the entire disk body and is thrown out of the disk body under the action of centrifugal force, and then evenly distributed on the circumferential surface of the annular wall.

[0014] In addition, since there is a distance between the disk body and the open end, after the liquid material is distributed on the circumferential surface of the annular wall, it is also affected by centrifugal force and gravity and displaces in the direction of the open end, that is, it also diffuses axially along the annular wall, thereby forming a very thin liquid film on the entire annular wall, creating sufficient conditions for subsequent atomization.

[0015] In some examples of the present utility model, grooves are formed at positions on the annular wall corresponding to the disk body, and the grooves are used to store the liquid material radially distributed by the disk body.

[0016] The purpose of setting the grooves is as follows: Due to the function of the disk body in distributing the liquid material, the liquid material is first stored in the grooves. When the liquid material is stored to a certain extent, it overflows from the grooves. The overflowing liquid material can stably and evenly form a liquid film, avoiding the defect of uneven liquid film caused by the uneven distribution of the liquid material in the circumferential direction of the annular wall and then axially displacing, and also avoiding the defect of uneven liquid film caused by unstable liquid supply or at the initial stage of atomization.

[0017] In some examples of the present utility model, the annular wall surface shows a tendency to expand in the direction pointing to the open end. The purpose of this setting is that the material film needs to present an umbrella shape after detaching from the atomization disc to facilitate meeting the conical fluid ejected, and the annular wall surface showing a tendency to expand is to conform to the shape of the material film.

[0018] In some examples of the present utility model, this centrifugal air - flow atomizer further includes a rotating shaft. The rotating shaft extends into the atomization disc from the end of the atomization disc far from the open end to avoid interfering with the forming operation of the material film. The rotating shaft is also relatively connected to the atomization disc and is used to drive the atomization disc to rotate when connected to a rotating device such as a motor.

[0019] In some examples of the present utility model, this centrifugal air - flow atomizer further includes a liquid supply pipe. The liquid supply pipe extends into the atomization disc from the end of the atomization disc far from the open end to avoid interfering with the forming operation of the material film, and the liquid outlet of the liquid supply pipe corresponds to the disc - shaped body, so that the liquid material falls on the disc - shaped body.

[0020] In some examples of the present utility model, the air - flow channel is an annular channel, which is arranged outside the annular wall surface. The air - flow channel is the interlayer between the annular outer wall surface and the annular inner wall surface. The shape of the air flow ejected from the air - flow channel is annular, and it can meet the umbrella - shaped material film in the entire circumference and mix fully with the material film.

[0021] In some examples of the present utility model, the air - flow channel shows a tendency to contract in the direction of the axis of the atomizer pointing to the open end; the tendency of the air - flow channel to contract can make the ejected air flow first present a conical shape, form a large angle with the umbrella - shaped liquid material to achieve full collision and mixing between the two, and after mixing, it continues to disperse into an umbrella shape, presenting an overall X - shaped atomization shape;

[0022] It should be noted here that the "direction of the axis of the atomizer pointing to the open end" means that the axis of the atomizer has two opposite directions, and the direction pointing to the open end is determined as a single direction.

[0023] In some examples of the present utility model, the annular outer wall surface is conical and the annular inner wall surface is drum - shaped; the purpose of this setting is that, firstly, the combination of the conical annular outer wall surface and the drum - shaped annular inner wall surface can make the flow rate of the air - flow channel show a decreasing trend, thereby increasing the air pressure and further increasing the air velocity. In addition, the drum - shaped annular inner wall surface is used to reduce the air resistance.

[0024] In some examples of the present utility model, a number of guide vanes are arranged in the air - flow channel. The guide vanes are used to guide the air flow, so that the air flow obtains centrifugal force and generates a vortex motion. The number of guide vanes is annularly distributed along the axis of the atomizer, and the extension direction of each guide vane has an angle with the axis of the atomizer, and the angle is greater than 0 degree and less than 90 degrees.

[0025] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a cross-sectional view of a centrifugal gas-flow atomizer;

[0028] Figure 2 It is a cross-sectional view of an atomizing disk of one implementation manner of a centrifugal gas-flow atomizer;

[0029] Figure 3 It is a cross-sectional view of an atomizing disk of another implementation manner of a centrifugal gas-flow atomizer;

[0030] Figure 4 It is a schematic diagram of the umbrella-shaped structure of the liquid material after it separates from the atomizing disk in a centrifugal gas-flow atomizer;

[0031] Figure 5 It is a schematic diagram of the structure of the droplet group formed after the liquid material and the gas flow collide in a centrifugal gas-flow atomizer;

[0032] Figure 6 It is a partial structural schematic diagram of the swirl channel housing in a centrifugal gas-flow atomizer.

[0033] Description of the Reference Numerals:

[0034] Atomizing disk 1;

[0035] Inverted cup-shaped structure 11, annular side wall 111, annular wall surface 1111, groove 1112, plate-shaped top wall 112, through hole 1121, open end 113;

[0036] Disk body 12, convex column 121, column hole 122, smooth curved surface 123;

[0037] Bidirectional bolt 13;

[0038] Inner core 2;

[0039] Columnar body 21, inverted groove 211, cylindrical through hole 212, first liquid material pipe channel 213, oil receiving groove 214, outer wall surface 215;

[0040] Connecting plate 22, first connecting through hole 221, second material pipe channel 222;

[0041] Second bolt 23;

[0042] Top cover plate 24, second connecting through hole 241;

[0043] Core cylinder 25;

[0044] Outer shell 3;

[0045] Conical shell 31, inner wall surface 311;

[0046] Swirl channel shell 32;

[0047] Third bolt 33;

[0048] Outer cylinder 34;

[0049] End cover 35;

[0050] Fourth bolt 36;

[0051] Air flow channel 4;

[0052] Air flow outlet 41;

[0053] Air flow inlet 42;

[0054] Annular outer wall surface 43;

[0055] Annular inner wall surface 44;

[0056] Flow guiding vane 45;

[0057] Rotating shaft 5;

[0058] First bolt 51;

[0059] First bearing 52;

[0060] Oil retaining ring 53;

[0061] Second bearing 54;

[0062] Liquid material pipe 6;

[0063] Liquid material inlet pipe 61;

[0064] Oil pipe 7;

[0065] First oil port 71;

[0066] Second oil port 72. Specific implementation mode

[0067] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0068] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0069] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0070] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0071] Figure 1 is a cross-sectional view of a centrifugal air-flow atomizer;

[0072] Figure 2 is a cross-sectional view of an atomization disk of one implementation manner of the centrifugal air-flow atomizer;

[0073] Figure 3Cross-sectional view of the atomization disk of another embodiment of the centrifugal air flow atomizer;

[0074] Figure 4 Schematic diagram of the umbrella-shaped structure of the liquid material after it detaches from the atomization disk in the centrifugal air flow atomizer;

[0075] Figure 5 Schematic diagram of the structure of the droplet group formed after the liquid material and the air flow collide in the centrifugal air flow atomizer;

[0076] Figure 6 Partial structural schematic diagram of the swirl channel housing in the centrifugal air flow atomizer;

[0077] Next, refer to Figures 1-6 the centrifugal air flow atomizer described in the embodiments of the present invention shown below.

[0078] Specifically;

[0079] Please refer to the attached Figure 1 , this centrifugal air flow atomizer includes an atomization disk 1. The atomization disk 1 includes an inverted cup-shaped structure 11. The inverted cup-shaped structure 11 is composed of an annular side wall 111 and a plate-shaped top wall 112. The annular side wall 111 is circular, and it extends along the central axis L of the atomizer towards both ends. One end edge of it is connected to the plate-shaped top wall 112, and the other end is open. Among them, the annular side wall 111 and the plate-shaped top wall 112 are integrally injection-molded.

[0080] Please continue to refer to the attached Figure 1 , the inner wall surface of the annular side wall 111 forms an annular wall surface 1111. Correspondingly, the annular wall surface 1111 is also circular. The annular wall surface 1111 extends along the central axis L of the atomizer towards both ends with the annular side wall 111. Among them, the open end of the annular side wall 111 away from the plate-shaped top wall 112 is also the end where the annular wall surface 1111 forms an opening 113.

[0081] It should be noted that when the atomization disk 1 is operating, it is in an inverted cup state, that is, the opening 113 is the end pointing to the direction of gravity, and one end of the plate-shaped top wall 112 is the end that bears the rotational load. When the atomization disk 1 rotates along the central axis L, the liquid material in the atomization disk 1 is affected by the centrifugal force and is distributed on the annular wall surface 1111 and detaches and diffuses at the opening 113.

[0082] Please continue to refer to the attached Figure 1, this centrifugal air atomizer further includes an inner core 2. The inner core 2 includes a columnar body 21 that extends along the central axis L. One end of the columnar body 21 is recessed inward to form an inverted groove 211 for placing the atomizing disk 1. The inverted groove 211 is a cylindrical inverted groove and has a gap with the atomizing disk 1, and this gap is for the purpose of not hindering the rotation of the atomizing disk 1; and the lower end of the atomizing disk 1 slightly exceeds the end of the inverted groove 211 to prevent the inverted groove 211 from obstructing the ejection of the liquid material.

[0083] Please continue to refer to the appendix Figure 1 , this centrifugal air atomizer further includes a housing 3. The housing 3 includes a conical shell 31. The conical shell 31 is sleeved outside the columnar body 21, and its closed end is basically in the same plane as the end of the columnar body 21 with the inverted groove 211. A ring gap is formed between the conical shell 31 and the columnar body 21 on this plane; wherein, an air flow channel 4 is formed between the inner core 2 and the housing 3. One end of the air flow channel 4 is an air flow outlet 41, and this ring gap is the air flow outlet 41.

[0084] Specifically, it can be seen from the formation structure of the air flow channel 4 that the air flow channel 4 is arranged outside the annular wall surface 1111 and extends along the axial direction L of the atomizer. One end of it extends to the open end 113, that is, the air flow outlet 41 is basically on the same horizontal plane as the open end 113, or the open end 113 slightly protrudes from the air flow outlet 41, so that the air flow after being discharged through the air flow channel 4 can collide with the liquid material diffused at the open end 113.

[0085] Please continue to refer to the appendix Figure 1 , the atomizing disk 1 further includes a disk-shaped body 12. The disk-shaped body 12 is a circular disk-shaped body and is located inside the inverted cup-shaped structure 11, that is, inside the annular wall surface 1111, and is relatively fixed to the annular wall surface 1111 for radially distributing the liquid material in the atomizing disk 1;

[0086] Specifically, the disk-shaped body 12 is perpendicular to the central axis L and is connected to the plate-shaped top wall 112 through a plurality of bi-directional bolts 13. There is a distance between the upper end of the disk-shaped body 12 and the plate-shaped top wall 112, and this distance reserves space for the liquid material to enter the atomizing disk 1. There is a distance between its side part and the annular wall surface 1111, and this distance reserves space for the liquid material to spread on the annular wall surface 1111. There is a distance between its lower part and the open end 113, which reserves space for the liquid material to diffuse axially on the annular wall surface 1111.

[0087] Please continue to refer to the appendix Figure 1 , in some embodiments, a groove 1112 is formed at the position on the annular wall surface 1111 corresponding to the disk-shaped body 12. The groove 1112 is an annular groove and is recessed along the circumferential direction of the annular wall surface 1111 in the annular side wall 111 for storing the liquid material radially distributed by the disk-shaped body 12;

[0088] Specifically, please refer to Figure 2 As shown, the feed liquid first fills the groove 1112 to form a relatively thick liquid film M in the groove 1112. Then, the feed liquid overflows from the groove 1112 and fills the annular wall surface 1111 to form a very thin liquid film N on the annular wall surface 1111 until it detaches from the open end 113.

[0089] In some other embodiments, please refer to Figure 3 As shown, there is no groove 1112 on the annular wall surface 1111. The feed liquid radially distributed by the disc body 12 is directly received by the annular wall surface 1111 to form a very thin liquid film on the annular wall surface 1111.

[0090] Please continue to refer to Figure 2 As shown, the annular wall surface 1111 has a tendency to expand in the direction pointing to the open end 113. Similarly, in some other embodiments, for example, in the case shown in the appendix Figure 3 As shown, the annular wall surface 1111 also has a tendency to expand in the direction pointing to the open end 113, which is to prepare for the feed film that has detached from the open end 113 to form an umbrella shape;

[0091] Therefore, please refer to the appendix Figure 4 As shown, the feed film that has detached from the open end 113 begins to be unstable and gradually breaks up into droplets while forming the umbrella-shaped structure K.

[0092] Please continue to refer to Figure 1 As shown, this centrifugal air-flow atomizer further includes a rotating shaft 5. The rotating shaft 5 extends into the atomizing disc 1 from the end of the atomizing disc 1 away from the open end 113 and is relatively connected to the atomizing disc 1;

[0093] Specifically, please continue to refer to the appendix Figure 2 , a convex column 121 is formed by protruding along the central axis L at the central position of the disc body 12. The convex column 121 extends to both sides of the disc body 12, so that the convex column 121 has a sufficient length to stably connect it to the rotating shaft 5;

[0094] More specifically, a column hole 122 is formed along the central axis L on the convex column 121. The column hole 122 is conical. Then, please continue to refer to the appendix Figure 1 , one end of the rotating shaft 5 passes through the column hole 122 and is connected to the first bolt 51. The shoulder of the first bolt 51 abuts against the end of the convex column 121 to stably connect the disc body 12 to the rotating shaft 5.

[0095] Please continue to refer to the appendix Figure 2 , the convex column 121 and the upper end surface of the disc body 12 are connected by a smooth curved surface 123. The purpose of this is to prevent the feed liquid from accumulating on the disc body 12.

[0096] Please continue to refer to the appendixFigure 2 , a through hole 1121 through which the convex column 121 can pass is formed in the plate-shaped top wall 112. Please refer to the appendix again Figure 1 , the rotating shaft 5 first passes through the cylindrical through hole 212 formed in the columnar body 21, and then extends into the column hole 122 at the through hole 1121.

[0097] Please continue to refer to the appendix Figure 1 , the centrifugal air-flow atomizer further includes a liquid material pipe 6. The liquid material pipe 6 extends into the atomizing disc 1 from one end of the atomizing disc 1 away from the open end 113, and the liquid outlet of the liquid material pipe 6 corresponds to the disc-shaped body 12;

[0098] Specifically, the inner diameter of the through hole 1121 formed in the plate-shaped top wall 112 is such that not only can the convex column 121 pass through it, but also one end of the liquid material pipe 6 can pass through it. The liquid material pipe 6 first passes through the first liquid pipe channel 213 formed in the columnar body 21, and then extends into the atomizing disc 1 at the through hole 1121, facing the upper end surface of the disc-shaped body 12.

[0099] Please continue to refer to the appendix Figure 1 , the inner core 2 further includes a connecting disc 22. The connecting disc 22 is a circular disc-shaped body, and its lower end surface is connected to the upper end surface of the columnar body 21 by a second bolt 23;

[0100] Please continue to refer to the appendix Figure 1 , a first connecting through hole 221 through which the rotating shaft 5 can pass is formed in the middle of the connecting disc 22 along the central axis L. A first bearing 52 is provided between the inner wall of the first connecting through hole 221 and the rotating shaft 5, so that the connecting disc 22 plays a supporting role and an auxiliary rotating role on the middle part of the rotating shaft 5.

[0101] Please continue to refer to the appendix Figure 1 , an oil receiving groove 214 corresponding to the first connecting through hole 221 is further formed in the upper end surface of the columnar body 21. The oil receiving groove 214 is an annular groove recessed in the upper end surface of the columnar body 21. Correspondingly, an oil retaining ring 53 is tightly fitted at a position on the rotating shaft 5 corresponding to the oil receiving groove 214, and a rubber ring is provided between the oil retaining ring 53 and the rotating shaft 5 to form a seal;

[0102] The purpose of providing the oil receiving groove 214 and the oil retaining ring 53 is that when the atomizer is operating, lubricating oil needs to be continuously filled at the first bearing 52. The oil receiving groove 214 is used to receive the lubricating oil dropped from the first bearing 52, and the oil retaining ring 53 is used to guide the lubricating oil so that it enters the oil receiving groove 214 and at the same time prevents it from entering the atomizing disc 1 along the rotating shaft 5.

[0103] Please continue to refer to the appendix Figure 1 , before passing through the first liquid pipe channel 213, the liquid material pipe 6 first passes through the second liquid pipe channel 222 formed in the connecting disc 22.

[0104] Please continue to refer to the appendix Figure 1, the inner core 2 further includes a top cover plate 24 and a core cylinder 25. The lower end of the core cylinder 25 is welded to the upper end face of the connection plate 22, and is relatively fixed to the upper end of the core cylinder 25.

[0105] Please continue to refer to the appendix Figure 1 , the upper end of the rotating shaft 5 extends to sequentially pass through the second connection through holes 241 formed in the core cylinder 25 and the top cover plate 24. The rotating shaft 5 is connected to the second connection through holes 241 by a second bearing 54, so that the top cover plate 24 forms a supporting effect and an auxiliary rotating effect on the upper end of the rotating shaft 5. At the same time, the upper end of the rotating shaft 5 passes through the upper end of the top cover plate 24 for connecting a power device such as a stepping motor.

[0106] Please continue to refer to the appendix Figure 1 , the upper end of the liquid supply pipe 6 also sequentially passes through the core cylinder 25 and the top cover plate 24, and extends to the upper end of the top cover plate 24 to be connected to the liquid supply inlet pipe 61.

[0107] Please continue to refer to the appendix Figure 1 , this centrifugal air atomizer further includes an oil pipe 7, as well as a first oil port 71 and a second oil port 72. The oil pipe 7 is placed inside the core cylinder 25, one end of which extends to the first bearing 52, and the other end is communicated with the first oil port 71 installed on the top cover plate 24 for introducing lubricating oil to the first bearing 52 to help the first bearing 52 rotate and cool; the second oil port 72 is also installed on the top cover plate 24 and extends to be communicated with the second connection through holes 241 for introducing lubricating oil to the second bearing 54 to help the second bearing 54 rotate and cool.

[0108] Please continue to refer to the appendix Figure 1 , the outer shell 3 further includes a swirl channel shell 32. The swirl channel shell 32 is annular, and its lower end is connected to the open end of the conical shell 31 by a third bolt 33, forming an annular sandwich with the columnar body 21, and this annular sandwich also serves as a section of the air flow channel 4.

[0109] Please continue to refer to the appendix Figure 1 , the outer shell 3 further includes an outer cylinder 34 and an end cover 35. The outer cylinder 34 is also conical, its lower end is fixedly connected to the upper end of the swirl channel shell 32, and the upper end is fixedly connected to the lower end face of the end cover 35. An annular sandwich is also formed between the outer cylinder 34 and the core cylinder 25, and this annular sandwich also serves as a section of the air flow channel 4, and the upper end of the air flow channel 4 is closed by the end cover 35.

[0110] Please continue to refer to the appendix Figure 1, one end of the air flow channel 4 far from the air flow outlet 41 is also communicated with the air flow inlet 42 opened on the end cover 35. Air flow can be introduced into the air flow channel 4 through the air flow inlet 42. The air flow medium can be any one of hot compressed air, cold compressed air or water vapor. After the air flow enters the air flow channel 4, since the flow capacity in the air flow channel 4 gradually decreases, the air flow pressure continuously increases and the speed also increases until it sprays out at the air flow outlet 41.

[0111] Please continue to refer to the appendix Figure 1 , the end cover 35 is an annular plate member, and the top cover plate 24 is placed in the middle of the end cover 35, and the two are connected by a plurality of fourth bolts 36.

[0112] Please continue to refer to the appendix Figure 1 , the air flow channel 4 is a sandwich layer between the annular outer wall surface 43 and the annular inner wall surface 44;

[0113] Specifically, the annular outer wall surface 43 is formed by connecting the inner wall surfaces of the conical shell 31, the swirl channel shell 32 and the outer cylinder 34, and the annular inner wall surface 44 is formed by connecting the outer wall surfaces of the columnar body 21, the connecting disk 22 and the core cylinder 25;

[0114] It can also be seen from this that the air flow channel 4 shows a shrinking trend in the direction of the axis L of the atomizer pointing to the open end 113. Therefore, please refer to the appendix Figure 5 , the air flow ejected from the air flow channel 4 can be in an inverted conical shape. Until it collides with the umbrella-shaped liquid material, the liquid material is atomized. The atomized droplet group G then presents an umbrella shape with a larger opening angle, and the entire atomized droplet group G is in an X shape, forming a hollow conical space S at the lower end of the open end 113.

[0115] Please continue to refer to the appendix Figure 1 , the annular outer wall surface 43 is conical, and the annular inner wall surface 44 is drum-shaped. In this embodiment, it is shown that the inner wall surface 311 of the conical shell 31 is in a ring-shaped cone, and the outer wall surface 215 of the columnar body 21 is in a ring-shaped drum.

[0116] Please refer to the appendix Figure 6 , a plurality of guide vanes 45 are arranged in the air flow channel 4, that is, the guide vanes 45 are formed in the swirl channel shell 32 and integrally formed with the swirl channel shell 32. The guide vanes 45 are used to guide the air flow, so that the air flow obtains centrifugal force and generates a vortex motion. The plurality of guide vanes 45 are annularly distributed along the axis L of the atomizer, and an included angle a is formed between the extending direction of each guide vane 45 and the axis L of the atomizer, and the included angle a is greater than 0 degree and less than 90 degrees.

[0117] Other components of the embodiment of the present invention, such as a stepping motor, etc., and operations are known to those of ordinary skill in the art and will not be described in detail here.

[0118] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0119] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. Centrifugal airflow atomizer, characterized by: The atomizing disk comprises an annular wall surface, the annular wall surface extends along the axial direction of the atomizer and forms an opening at one end of the annular wall surface. When the atomizing disk rotates along its axial direction, the liquid in the atomizing disk is distributed on the annular wall surface under the action of centrifugal force and separates and diffuses at the opening. It also includes an air flow channel, which is arranged on the outside of the annular wall and extends along the axial direction of the atomizer, with one end extending to the open port, so that the air flow collides with the material liquid diffused at the open port after being discharged through the air flow channel.

2. The centrifugal airflow atomizer according to claim 1, characterized in that: The atomizing disk also has a disk-shaped body, which is located inside the annular wall surface and fixed relatively to the annular wall surface for radially distributing the liquid in the atomizing disk, and there is a distance between the disk-shaped body and the opening.

3. The centrifugal airflow atomizer according to claim 2, characterized in that: A groove is formed on the annular wall surface at a position corresponding to the disc-shaped body, and the groove is used to store the liquid radially distributed from the disc-shaped body.

4. The centrifugal airflow atomizer according to any one of claims 1 to 3, characterized in that: The annular wall surface has a tendency to expand in a direction pointing toward the opening.

5. The centrifugal airflow atomizer according to claim 2 or 3, characterized in that: It also includes a rotating shaft, which extends into the atomizing disk from an end of the atomizing disk away from the opening and is relatively connected to the atomizing disk.

6. The centrifugal airflow atomizer according to claim 2 or 3, characterized in that: It also includes a liquid feed pipe, which extends into the atomizing disk from one end of the atomizing disk away from the opening, and the liquid outlet of the liquid feed pipe corresponds to the disk-shaped body.

7. The centrifugal airflow atomizer according to any one of claims 1 to 3, characterized in that: The airflow channel is an annular channel, which is arranged outside the annular wall surface. The airflow channel is an interlayer between the annular outer wall surface and the annular inner wall surface.

8. The centrifugal airflow atomizer according to claim 7, characterized in that: The air flow channel tends to contract in the axial direction of the atomizer toward the opening.

9. The centrifugal airflow atomizer according to claim 8, characterized in that: The annular outer wall surface is conical, and the annular inner wall surface is drum-shaped.

10. The centrifugal airflow atomizer according to claim 7, characterized in that: A plurality of guide blades are arranged in the airflow channel, and the guide blades are used to guide the airflow so that the airflow obtains centrifugal force. The guide blades are distributed in a ring shape along the axial direction of the atomizer, and an angle is formed between the extension direction of each guide blade and the axial direction of the atomizer, and the angle is greater than 0 degree and less than 90 degrees.

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