CN218902266U

CN218902266U - Atomizing nozzle

Info

Publication number: CN218902266U
Application number: CN202222700641.0U
Authority: CN
Inventors: 余忠华
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-04-25
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses an atomizing nozzle, which comprises a nozzle body, wherein the nozzle body is respectively provided with an air supply channel and a liquid supply channel, and an air supply hole and a liquid supply hole which are respectively communicated with first ends of the air supply channel and the liquid supply channel; the nozzle body is also provided with an atomizing chamber with a cavity structure, and the atomizing chamber is divided into an upstream section, a middle section and a downstream section which are communicated with each other along the flowing direction of gas or liquid; the upstream section of the atomizing chamber is a mixing chamber, and the bottom and the lateral direction of the mixing chamber are respectively provided with a liquid inlet hole communicated with the second end of the liquid supply channel and an air inlet hole communicated with the second end of the air supply channel; the middle section of the atomizing chamber is a mist outlet for spraying; the downstream section of the atomizing chamber is an oscillating cavity formed by the upper side edge of the mist outlet and the closed end of the downstream section. Through adopting this application atomizing nozzle, can obtain the fan-shaped spraying below 15 microns, obtain required atomizing angle, spray coverage through the tangential depth of changing fan-shaped spout parameter.

Description

Atomizing nozzle

Technical Field

The utility model belongs to the technical field of fluid atomization, and particularly relates to an atomization nozzle.

Background

In recent years, dry mist dust suppression has been used in dust areas such as material transfer parts, dumper hoppers and ship unloader hoppers, and has a good dust suppression effect.

In practical application, in dust raising points in a narrow space such as the roller position of a belt conveyor, dust raising mainly occurs between an upper belt and a lower belt, a currently used dry fog nozzle easily contacts a belt frame in front of the roller before fog flow is not completely atomized, so that condensed water drops fall down, and the dry fog can not fully cover the roller.

Therefore, there is a need for a nozzle structure that can emit dry mist and can vary the size of the spray orifice, i.e., vary the spray coverage.

The inventor of the present application proposed an air-flow ultrasonic atomizing nozzle in the chinese patent (2009201155269), which can stably spray dry mist and is not easy to be blocked, and can meet the dust suppression requirement in a larger dust-raising area, compared with the prior art. The spray nozzle is cylindrical in shape, requires a specific mounting location in a relatively narrow space to avoid touching the belt frame, and requires two spray nozzles to achieve dry spray coverage of the drum when the drum width exceeds 2 meters.

Therefore, there is a need for a nozzle that can spray dry mist in a confined space, such as to cover the dust-raising surface at the drum, and avoid hitting the upper and lower metal support surfaces before incomplete atomization.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art, for which purpose it provides a new atomizing nozzle with fan-shaped spray characteristics.

An atomizing nozzle comprises a nozzle body, wherein an air supply channel and a liquid supply channel are respectively formed in the nozzle body, and an air supply hole and a liquid supply hole which are respectively communicated with first ends of the air supply channel and the liquid supply channel; the nozzle body is also provided with an atomizing chamber with a cavity structure, and the atomizing chamber is divided into an upstream section, a middle section and a downstream section which are communicated with each other along the flowing direction of gas or liquid;

the upstream section of the atomizing chamber is a mixing chamber, and the bottom and the lateral direction of the mixing chamber are respectively provided with a liquid inlet hole communicated with the second end of the liquid supply channel and an air inlet hole communicated with the second end of the air supply channel;

the middle section of the atomizing chamber is a mist outlet for spraying;

the downstream section of the atomizing chamber is an oscillating cavity formed by the upper side edge of the mist outlet and the closed tail end of the downstream section.

As a further improvement scheme, the axis of the air inlet hole is perpendicular to the axis of the atomizing chamber, and the liquid inlet hole and the atomizing chamber are arranged on the same axis or the axis of the liquid inlet hole and the axis of the atomizing chamber are arranged at an acute angle.

As a further improvement scheme, the air inlet hole and the air supply channel are coaxially arranged, and the liquid inlet hole and the part of the liquid supply channel close to the atomizing chamber are coaxially arranged.

As a further development, the diameters from the air supply opening, the air supply channel to the air inlet opening are gradually reduced along the air supply direction; the diameters from the liquid supply hole and the liquid supply channel to the liquid inlet hole are gradually reduced along the liquid supply direction; the axis from the mixing chamber of the upstream section to the oscillation cavity of the downstream section is arranged coaxially.

As a further improvement scheme, the atomizing chamber is an equal-diameter atomizing channel, and is of a cylindrical cavity structure with a closed tail end of a downstream section; the diameter of the atomizing chamber is D3, the minimum diameter of the liquid inlet is D1, the diameter of the air inlet is D2, and D3 is more than D2 and more than D1.

As a further improvement scheme, along the liquid inlet direction, the diameter of feed liquor hole be progressively reduced, the upper portion of feed liquor hole is cylindrical structure for with mixing chamber intercommunication, the lower part is round platform type structure for with the second end intercommunication of feed liquor passageway.

As a further improvement scheme, the mist outlet is communicated with the middle section of the atomizing chamber transversely outwards and is formed by a U-shaped transverse groove or a notch, and the upper side edge of the mist outlet is obliquely arranged upwards and forms an acute angle with the horizontal line.

As a further improvement scheme, the included angle is 5-30 degrees; the depth of the fog outlet is S, and the depth of the S is D3 which is 0.5-2/3 times of the depth of the S.

As a further improvement scheme, the shape of the mist outlet is a groove type mist outlet or a U-shaped groove mist outlet; the bottom edge of the fog outlet is a right-angle edge, an arc edge or a U shape; at least the upper side of the fog outlet is arc-shaped.

As a further improvement, the distance between the bottom edge of the air supply hole and the bottom edge of the mixing chamber is L4, and L4 is D3 which is 0-1 times; the distance between the lower side of the spray opening and the upper side of the air inlet is L3, the L3 is more than or equal to D2, the width L2 of the bottom of the spray opening is 0.5-5 mm, and the depth L1 of the oscillating cavity is 1.5-10 mm.

The present application is described in further detail below:

the application provides a fan-shaped pneumatic atomizing nozzle, which comprises a nozzle body, wherein the nozzle body comprises an atomizing chamber, an air supply channel and a liquid supply channel; the atomizing chamber is a cylindrical cavity with a closed top, a liquid inlet communicated with a liquid supply channel is formed in the bottom of an upstream section of the atomizing chamber, an air inlet communicated with the liquid supply channel is formed in one side of the upstream section of the atomizing chamber, a groove-shaped mist outlet for spraying and spraying is formed in the middle section of the atomizing chamber opposite to the air inlet, and a cylindrical oscillating cavity is formed in the upper side of the atomizing chamber, which is provided with a closed downstream tail end and the groove-shaped mist outlet. One end of the air supply channel is communicated with an air inlet hole of the atomizing chamber, and the other end of the air supply channel is provided with an air inlet (air supply hole); one end of the liquid supply channel is communicated with the liquid inlet of the atomizing chamber, and the other end is provided with a liquid inlet (liquid supply hole).

1. The air inlet hole is perpendicular to the axis of the atomizing chamber, and the liquid inlet hole enters the same axis of the atomizing chamber or enters at an acute angle.

2. The inner diameter of the atomizing channel is equal-diameter channel, the diameter of the atomizing chamber is D3, the diameter of the liquid inlet is D1, and the diameter of the air inlet is D2. D3 & gt d2 & gt D1.

The water hole (D1) is 0.6-2.0 mm, the air hole (D2) is 1.5-3.0 mm, and the mixing chamber (D3) is 2.5-7.0 mm.

3. D3 of the boundary line between the atomizing chamber and the air inlet, L3 is greater than or equal to D2, L2 is the width of the slot nozzle (namely the bottom width of the mist outlet), L2 is 0.5-5 mm, and L1 is the depth of the oscillating cavity, 1.5-10 mm.

4. The depth of the groove-shaped nozzle is S, and the depth of S is D3 of 0.5-2/3.

5. The side of the fog outlet of the nozzle body is arc-shaped, and fog sprayed by the fog outlet is flat fan-shaped.

6. Half of the groove angle is B, 5-30 degrees. The groove shape can be opened into a groove shape with the bottom edge being a right angle, and the spraying is not affected. As the mist is sprayed along the upper side of the trough.

7. The spray angle can be changed by changing the depth of the cutting groove, so that the atomization distance is changed. The larger the spray angle, the smaller the atomization particle size.

8. The water enters the atomizing chamber from the liquid inlet hole, is impacted with air entering from an air inlet hole laterally arranged in the atomizing chamber, then enters an oscillating cavity at the downstream section of the atomizing chamber, and finally is sprayed out along a rectifying surface fan shape from a lateral notch at the middle section of the atomizing chamber.

9. The liquid channel forms an included angle of 90 degrees with the gas channel. The liquid channel is located at the center of the nozzle.

10. The mixed gas enters the atomizing chamber to be mutually impacted and mixed, strong energy exchange and momentum exchange occur, the mixed gas reaches the oscillating cavity at the downstream of the atomizing chamber, and the mixed gas is limited by the rectifying groove from the lateral outlet to be extruded and deformed, and finally rectified into a flat fan-shaped spray shape.

11. The flow guiding surface is beneficial to further expansion and expansion of the gas-liquid mixed flow on one hand and can limit the atomizing angle of the spray on the other hand.

12. The high-speed water-gas mixed flow collides with the oscillating cavity and is broken into a dispersed fine fog drop group.

13. The characteristics are as follows: a flat fan-shaped nozzle for lateral air inlet and lateral mist outlet. An oscillating nozzle for vertical air intake.

14. Mist flow from the oscillation cavity is ejected from the slot-shaped outlet along the rectifying surface 124. The spray coverage area can be varied by varying the size of the orifice, such as varying the depth of the slot.

15. The inner diameter of the gas supply passage 11 is gradually reduced from the gas supply hole 111 toward the gas inlet hole 112, so that the gas introduced into the gas inlet hole 112 is pressurized and is ejected from the gas ejection port at a high speed.

16. The inner diameter of the liquid supply channel 13 is gradually reduced from the liquid supply hole 131 to the liquid inlet hole 132, so that the flow speed and the atomization efficiency can be improved.

17. In this example, the side of the nozzle body at the mist outlet is arc-shaped, and the mist outlet is a U-shaped notch for mist outlet. Extending along a fan-shaped plane approximately perpendicular to the center of the spray orifice to form a flat fan-shaped spray pattern.

18. As a specific embodiment of the atomizing nozzle 10 provided in the present application, the liquid supply passage 13 is disposed coaxially with the atomizing passage 12, and one end of the air supply passage 11 contacting the air intake hole 112 is disposed perpendicularly to the atomizing passage 12. Specifically, the atomizing passage 12 is provided at the top end (upward side) of the liquid supply passage 13.

19. In practicing the atomizing nozzle of the present application, the mixed mist stream is directed and spread from the mist outlet opening laterally with respect to the central axis of the atomizing chamber 12 after impinging on the inside of the oscillation cavity. In this case, the mist outlet communicates laterally outwardly in the middle of the atomizing chamber and is formed by a U-shaped cross slot or cutout, the depth of which. The upper side of the transverse groove is provided with a fog outlet surface. The mist stream spreads along a defined fan plane after impinging with the oscillation cavity to form a flat fan spray.

20. The most special feature of the present application is the lateral air intake of the cylindrical atomizing chamber.

21. The liquid inlet, the lateral air inlet, the lateral mist outlet and the oscillating cavity are sequentially arranged from the upstream section to the downstream closed end direction of the atomizing chamber.

22. The air inlet direction and the water inlet direction of the atomizing chamber. The air inlet is perpendicular to the axis of the mixing chamber. The liquid inlet hole and the mixing chamber are coaxial. The fan-shaped spray characteristic can also be a groove with an arc bottom, a flat groove or an arc U-shaped groove. The spray coverage area can be varied by varying the depth of the slot to vary the outlet area.

Compared with the prior art, the beneficial effects of this application are:

1): through adopting this application atomizing nozzle, can obtain the fan-shaped spraying below 15 microns, and then can obtain the atomizing angle of needs, spraying coverage through the tangential depth of changing fan-shaped spout parameter.

2): according to the atomizing nozzle, liquid enters the atomizing chamber through the liquid inlet, is impacted with air entering from the air inlet in the lateral direction of the atomizing chamber, and is subjected to strong energy exchange and momentum exchange, reaches the oscillating cavity in the downstream of the atomizing chamber, is limited by the rectifying groove from the lateral outlet and is extruded and deformed, and finally is rectified into a flat fan-shaped spray shape.

3): the internal diameter of the liquid supply channel is gradually reduced from the liquid inlet to the liquid spraying opening, so that the flow speed can be increased, and the atomization efficiency can be improved.

Drawings

Figure 1 is a front view of the atomizing nozzle of the present application,

figure 2 is a cross-sectional view in direction B-B of figure 1,

fig. 3 is an enlarged partial schematic view of the atomizing nozzle of the present application.

Reference numerals: 10-nozzle body, 11-air supply channel, 12-atomizing channel, 13-liquid supply channel, 14-first end cap, 15-second end cap, 111-air supply hole, 112-inlet port, 121-mixing chamber, 122-fog outlet, 123-oscillating cavity, 124-rectifying surface, 131-liquid supply hole, 132-liquid inlet.

Detailed Description

The following detailed description of the atomizing nozzle of the present application is provided in connection with the accompanying drawings, and it is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the present application. The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, this is merely for convenience of description and simplification of the description, and is not an indication or suggestion that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the words describing the positional relationship in the drawings are merely for exemplary illustration and not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the above terms according to the specific circumstances.

The utility model provides an atomizing nozzle, includes nozzle body 10, nozzle body 10 includes atomizer chamber, air feed channel 11, liquid feed channel 13, liquid feed hole 131 and air feed hole 111 have been seted up respectively to nozzle body 10 one side, and liquid feed hole 131 is linked together with the first end of liquid feed channel 13, and air feed hole 111 is linked together with the first end of air feed channel 11 the atomizer chamber has been seted up on the nozzle body 1, the atomizer chamber is terminal confined cylindrical cavity structure, along the flow direction of gas or liquid, the atomizer chamber is including the mixing chamber 121 that is located the upstream section, be located the play fog mouth 122 of interlude and be located the oscillating chamber 123 of downstream section. The mixing chamber 121, the mist outlet 122 and the oscillation cavity 123 are communicated. The bottom of the mixing chamber 121 is provided with a liquid inlet hole 132 communicated with the second end of the liquid supply channel 13, and the lateral direction of the mixing chamber 121 is provided with an air inlet hole 112 communicated with the air supply channel 11; the mist outlet 122 is formed in the middle section of the atomizing chamber opposite to the air inlet and is used for spraying and spraying, the mist outlet is formed by communicating the middle section of the atomizing chamber transversely outwards and through a U-shaped transverse groove or a notch, the mist outlet can be in a groove shape, and the downstream tail end of the atomizing chamber is sealed and forms the oscillating cavity 123 with the upper side edge of the mist outlet.

The diameters from the air supply hole 111, the air supply channel 11 to the air inlet hole 112 are gradually reduced along the air supply direction, the diameters from the liquid supply hole 131, the liquid supply channel 13 to the liquid inlet hole 132 are gradually reduced along the liquid supply direction, the axes of the air supply hole 111, the air supply channel 11 and the air inlet hole 112 are the same axis, the axes of the air inlet hole 111/the air supply channel are perpendicular to the axis of the mixing chamber 121, the axes of the liquid inlet hole 132 and the mixing chamber 121 are the same axis, and the liquid inlet hole 132 is coaxially arranged with the part of the liquid supply channel 13 close to the atomization chamber, as shown in fig. 1. After entering the mixing chamber 121 through the liquid inlet 132, the liquid in the atomizing nozzle is impacted by high-pressure gas entering from the air inlet 112, and undergoes strong energy exchange and momentum exchange with the liquid in the mixing chamber, and then reaches the oscillating cavity 123 at the downstream section of the atomizing chamber, and the high-speed water-gas mixed flow collides with the oscillating cavity to be crushed to form fine atomized liquid drops, and the fine atomized liquid drops are guided and spread from the mist outlet 122 transversely relative to the central axis of the atomizing chamber; and is ejected in a fan shape from the upper side of the mist outlet 122 on the side of the atomizing chamber. The mist outlet 122 in the nozzle body in this example is a U-shaped slot mist outlet or a slot type mist outlet.

In this embodiment, the air inlet 112 is disposed perpendicular to the axis of the atomizing chamber, the liquid inlet 132 is disposed coaxially with the atomizing chamber, or the liquid inlet may enter the atomizing chamber at an acute angle.

In addition, the diameter is gradually reduced when the liquid supply hole 131 communicated with the first end of the liquid supply channel 12 is connected and transited towards the liquid inlet hole 132 through the second end of the liquid supply channel, and the arrangement mode can improve the flow rate, thereby improving the atomization efficiency; specifically, the upper portion of feed liquor hole is the cylinder shape, and feed liquor hole lower part is round platform type structure, with feed liquor passageway second end intercommunication to the upper portion diameter of feed liquor hole is less than the lower part diameter of feed liquor hole. The inner diameter of the air supply hole 111 is gradually reduced from the first end of the air supply passage 11 toward the air intake hole 112, so that the air introduced into the air intake hole 112 is pressurized and ejected from the air intake hole 112 at a high speed.

In this embodiment, an atomization channel is formed from the mixing chamber to the oscillation cavity of the atomization chamber, the inner diameter of the atomization channel 12 is an equal diameter channel, the diameter of the atomization chamber is D3, the diameter of the liquid inlet is D1, and the diameter of the air inlet is D2; and D3 & gt, D2 & gt, D1. The upper side of the mist outlet 122 is disposed obliquely upwards, and forms an acute angle B with the horizontal line, and the angle range of the acute angle B is 5-30 degrees.

As shown in fig. 1, when the atomizing nozzle is processed, a small hole can be formed at the upper end and the lower end of the nozzle body respectively, then an atomizing chamber and a liquid supply channel are processed through the small holes, and the small hole can be closed through the first plug 14 and the second plug 15 after the processing is finished, so that the liquid supply channel cannot leak liquid when supplying liquid, and the tail end of the downstream section of the atomizing chamber is closed.

In some preferred embodiments, the depth of the fog outlet is S, and the depth of the S is D3 which is 0.5-2/3 times; the spray angle, and thus the atomization distance, may be varied by varying the depth of the mist outlet 122. The larger the spray angle, the smaller the atomization particle size. The spray coverage area can be varied by varying the size of the orifice, such as varying the depth of the slot.

In some preferred embodiments, the diameter D1 of the inlet orifice 132 is 0.6-2.0 mm, the diameter D2 of the inlet orifice is 1.5-3.0 mm, and the diameter of the mixing chamber is 2.5-7.0 mm.

In some preferred embodiments, the inlet orifice and the bottom of the mixing chamber are not in the same horizontal plane, and the bottom of the inlet orifice is slightly higher than the bottom of the mixing chamber, with a borderline distance L4 therebetween, as shown in FIG. 3.

In some preferred embodiments, the oscillation chamber at the downstream section of the atomizing chamber, the intermediate section of the atomizing chamber (including the mist outlet here), and the mixing chamber at the upstream section of the atomizing chamber are arranged coaxially, but the diameters of the mixing chamber and the oscillation chamber may be the same or may be different.

In some preferred embodiments, the slot-shaped outlet may also be configured as a slot with a right angle bottom edge, without affecting the spray. The bottom edge of the fog outlet can be a right-angle edge, an arc edge or a U shape.

The working process of the atomizing nozzle is as follows: liquid with certain pressure enters from the liquid supply hole 131, passes through the liquid supply channel 13 and then enters the mixing chamber 121 of the atomizing chamber through the liquid inlet hole 132, meanwhile compressed air enters from the air supply hole 111, passes through the air supply channel 11 and then enters the mixing chamber 121 of the atomizing chamber through the air inlet hole 112, gas flow and liquid flow are vertically impacted, crushed and mixed, strong energy exchange and momentum exchange occur, then the gas flow reaches the oscillating cavity 123 of the downstream section, and the high-speed water-gas mixed flow collides with the oscillating cavity to form fine atomized liquid drops, and is transversely guided and spread from the mist outlet relative to the central axis of the atomizing chamber; and is ejected from the slot-type mist outlet 122 on the side of the atomizing chamber in a fan shape along the slot-type surface on the side of the oscillation chamber (i.e., from the upper side of the slot-type mist outlet 122).

As a specific embodiment of the atomizing nozzle 10 provided in the present application, the liquid supply passage 13 near the atomizing chamber is disposed coaxially with the atomizing passage 12, and one end of the air supply passage 11 contacting the air intake hole 112 is disposed perpendicularly to the atomizing passage 12. Specifically, the atomizing passage 12 is provided at the top end (upward side) of the liquid supply passage 13.

In practicing this embodiment, the mixed mist stream is directed and spread from the mist outlet opening laterally with respect to the central axis of the atomizing chamber 12 after impinging on the inside of the oscillation cavity. In this case, the mist outlet communicates laterally outwardly in the middle of the atomizing chamber and is formed by a U-shaped cross slot or cutout, the depth of which. The upper side of the transverse groove is provided with a fog outlet surface. The mist flow is impacted with the oscillating cavity and then extends along a fan-shaped plane approximately perpendicular to the center of the spray hole, so that a flat fan-shaped spray shape is formed.

The utility model is most characterized in that the lateral air inlet of the cylindrical atomizing chamber. The liquid inlet, the lateral air inlet, the lateral mist outlet and the oscillating cavity are sequentially arranged from the upstream section to the downstream closed end direction of the atomizing chamber. The air inlet direction and the liquid inlet direction of the atomizing chamber, and the air inlet hole are perpendicular to the axis of the mixing chamber. The liquid inlet hole and the mixing chamber are coaxial. The fan-shaped spray characteristic can also be a groove with an arc bottom, a flat groove or an arc U-shaped groove. The spray coverage area can be varied by varying the depth of the slot to vary the outlet area. The side outlet is limited by a rectifying groove to be extruded and deformed, and finally rectified into a flat fan-shaped spray shape.

Furthermore, the atomizing nozzle of the present application can be used in a device having a material transfer location, a dumper or a ship unloader hopper.

Claims

1. An atomizing nozzle comprises a nozzle body, wherein an air supply channel and a liquid supply channel are respectively formed in the nozzle body, and an air supply hole and a liquid supply hole which are respectively communicated with first ends of the air supply channel and the liquid supply channel; the method is characterized in that: the nozzle body is also provided with an atomizing chamber with a cavity structure, and the atomizing chamber is divided into an upstream section, a middle section and a downstream section which are communicated with each other along the flowing direction of gas or liquid;

the middle section of the atomizing chamber is a mist outlet for spraying;

2. An atomizing nozzle as set forth in claim 1, wherein: the axis of the air inlet hole is perpendicular to the axis of the atomizing chamber, and the liquid inlet hole and the axis of the atomizing chamber are arranged on the same axis or form an acute angle with the axis of the atomizing chamber.

3. An atomizing nozzle as set forth in claim 2, wherein: the air inlet hole and the air supply channel are coaxially arranged, and the liquid inlet hole and the part of the liquid supply channel close to the atomizing chamber are coaxially arranged.

4. An atomising nozzle according to claim 1 or 2 or 3, characterised in that: the diameters from the air supply hole, the air supply channel to the air inlet hole are gradually reduced along the air supply direction; the diameters from the liquid supply hole and the liquid supply channel to the liquid inlet hole are gradually reduced along the liquid supply direction; the axis from the mixing chamber of the upstream section to the oscillation cavity of the downstream section is arranged coaxially.

5. An atomizing nozzle as set forth in claim 4, wherein: the atomizing chamber is an equal-diameter atomizing channel, and is of a cylindrical cavity structure with a closed tail end of a downstream section; the diameter of the atomizing chamber is D3, the minimum diameter of the liquid inlet is D1, the diameter of the air inlet is D2, and D3 is more than D2 and more than D1.

6. An atomizing nozzle as set forth in claim 5, wherein: along the liquid inlet direction, the diameter of the liquid inlet hole is gradually reduced, the upper part of the liquid inlet hole is of a cylindrical structure and is communicated with the mixing chamber, and the lower part of the liquid inlet hole is of a circular truncated cone structure and is communicated with the second end of the liquid supply channel.

7. An atomizing nozzle as set forth in claim 1, wherein: the mist outlet is formed by transverse and outward communication at the middle section of the atomizing chamber and through a U-shaped transverse groove or a notch, and the upper side edge of the mist outlet is obliquely arranged upwards and forms an acute angle with the included angle of the horizontal line.

8. An atomizing nozzle as set forth in claim 7, wherein: the included angle is 5-30 degrees; the depth of the fog outlet is S, and the depth of the S is D3 which is 0.5-2/3 times of the depth of the S.

9. An atomising nozzle according to claim 1 or 2 or 3 or 7 or 8 characterised in that: the fog outlet is in a groove type or U-shaped groove type; the bottom edge of the fog outlet is a right-angle edge, an arc edge or a U shape; at least the upper side of the fog outlet is arc-shaped.

10. An atomizing nozzle as set forth in claim 9, wherein: the distance between the bottom edge of the air supply hole and the bottom edge of the mixing chamber is L4, and the L4 is D3 which is 0-1 times; the distance between the lower side of the spray opening and the upper side of the air inlet is L3, the L3 is more than or equal to D2, the width L2 of the bottom of the spray opening is 0.5-5 mm, and the depth L1 of the oscillating cavity is 1.5-10 mm.