Atomizing nozzle

Abstract

The utility model discloses an atomizing nozzle, and belongs to the technical field of spraying equipment, and the atomizing nozzle comprises a shell provided with a through hole penetrating through two ends; the nozzle inner core is made of a wear-resistant material piece and is arranged in the through hole, and the nozzle inner core and the shell are sealed; the nozzle inner core comprises a liquid inlet part, a reducing part and a liquid spraying part which are sequentially connected, a gap is formed between the liquid inlet part and the shell, the liquid inlet part is provided with a liquid inlet cavity and a liquid inlet hole penetrating through the liquid inlet cavity and the gap, the reducing part is provided with a reducing cavity communicating the two ends, the liquid spraying part is provided with a liquid spraying cavity communicating the two ends, and the liquid inlet cavity communicates with the liquid spraying cavity through the reducing cavity; the end, close to the liquid inlet cavity, of the variable-diameter cavity is larger than the end, close to the liquid spraying cavity, of the variable-diameter cavity. And the end cover is connected to the end part of the liquid inlet part and seals the liquid inlet cavity. According to the method, the atomized fluid which is sufficient and stable in form can be provided for a long time, the BET value of the iron oxide powder is stabilized in a high interval, long-life stable use is kept, and the situations that the nozzle is abraded too fast and blocked frequently are reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of spraying equipment, and in particular relates to an atomizing nozzle. Background Art

[0002] Acid regeneration involves converting spent acid into regenerated acid through a series of chemical and physical methods, simultaneously producing high-value-added iron oxide powder. In the currently widely used 1700 cold-rolled acid regeneration process, the BET value of iron oxide powder fluctuates between 2.5 and 3.0 m2 / g. This fluctuation is closely related to the atomization effect of the nozzle spray.

[0003] The nozzles currently used in on-site processes have sufficient and stable atomization of the acid when they are first put into use. However, with use, the nozzles wear out quickly, the spraying effect of the nozzles is affected, and the acid is not fully atomized, resulting in a rapid decrease in the BET value of the iron oxide powder, which seriously affects the stability of the quality of the iron oxide powder. Utility Model Content

[0004] The present application aims to at least to some extent solve the technical problem of poor effect of acid atomization nozzles. To this end, the present application provides an atomizing nozzle that can provide a fully shaped and stable atomized fluid for a long time, stabilize the BET value of iron oxide powder in a higher range, maintain stable use for a longer life, and reduce the situation of excessive wear and frequent clogging of the nozzle.

[0005] The present invention provides an atomizing nozzle, which includes:

[0006] The shell is provided with through holes extending through both ends;

[0007] A nozzle core made of a wear-resistant material is placed in the through hole, and the nozzle core and the shell are sealed. The nozzle core includes a liquid inlet portion, a reducing portion, and a liquid spray portion connected in sequence. A gap is formed between the liquid inlet portion and the shell. The liquid inlet portion is provided with a liquid inlet cavity and a liquid inlet hole passing through the liquid inlet cavity and the gap. The reducing portion is provided with a reducing cavity communicating at both ends. The liquid spray portion is provided with a liquid spray cavity communicating at both ends. The liquid inlet cavity and the liquid spray cavity are connected through the reducing cavity. The end of the reducing cavity near the liquid inlet cavity has a larger dimension than the end near the liquid spray cavity.

[0008] The end cover is connected to the end of the liquid inlet portion and closes the liquid inlet cavity.

[0009] In an optional embodiment, the liquid inlet hole is connected to the liquid spraying chamber along a tangential direction, so that the fluid entering the liquid spraying chamber moves in a circumferential spiral in the liquid spraying chamber.

[0010] In an optional embodiment, the size of the variable diameter cavity gradually decreases from the end close to the liquid inlet cavity to the end close to the liquid spraying cavity.

[0011] In an optional embodiment, the through hole is divided into a limiting section and a nozzle accommodating section from one end to the other end. The limiting section is smaller than the nozzle accommodating section, so that the inner core of the nozzle is stuck in the shell. The reducing portion and the liquid inlet portion are located in the nozzle accommodating section, and there is a gap between the liquid inlet portion and the shell.

[0012] In an optional embodiment, a locking member is further included, the through hole further includes a docking section, the locking member is connected to the docking section, the locking member is provided with a through hole for liquid inlet, and the through hole is connected to the gap.

[0013] In an optional embodiment, a plurality of through holes are provided, and the plurality of through holes are spaced apart from each other.

[0014] In an optional embodiment, the locking member is tightly pressed against the end cover, so that the nozzle core is clamped in the housing through the end cover.

[0015] In an optional embodiment, a locking member gasket is provided between the locking member and the end cover.

[0016] In an optional embodiment, a nozzle gasket is provided between the diameter-changing portion or the liquid-spraying portion and the shell.

[0017] In an optional embodiment, a shell gasket is provided on the side of the shell opposite to the liquid spraying portion.

[0018] It can be seen from the above technical solution that the beneficial effects of this application are:

[0019] The present application uses a shell, nozzle core and end cover made of acid-resistant materials to increase the service life of the nozzle and reduce wear. At the same time, the present application concentrates the pressurization and liquid spraying processes in the nozzle core. The fluid enters the liquid inlet cavity through the liquid inlet hole and undergoes the first pressurization. It can move along the inner wall in the liquid inlet part and can generate secondary pressurization under high-speed flow. It then enters the liquid spray part through the reducing part to achieve third pressurization and finally is sprayed out through the liquid spray part. In this way, the fluid can always maintain a high flow rate in the nozzle core and can have a better atomization effect after passing through the nozzle core. On the one hand, the pressurization and liquid spraying processes are concentrated by the nozzle core made of wear-resistant materials, reducing the wear of the fluid on the shell, and the fluid state of the fluid in the nozzle core can transition stably, reducing the internal impact and reducing wear. On the other hand, the fluid can maintain a high flow rate in the nozzle core, which can reduce the occurrence of nozzle core blockage under multiple pressurization and high-speed conditions. In this way, the present application can provide a sufficiently stable atomized fluid for a long period of time, stabilize the BET value of the iron oxide powder in a higher range, maintain stable use for a longer life, and reduce the situation of excessive wear and frequent clogging of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other embodiments and drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A cross-sectional view of an embodiment of the atomizing nozzle of the present utility model is shown;

[0022] Figure 2 A schematic diagram of an embodiment of the housing of the present utility model is shown;

[0023] Figure 3 A cross-sectional view of an embodiment of the invention showing the cooperation between the nozzle core and the end cap;

[0024] Figure 4 Shows a cross-sectional view of an embodiment of the housing of the present utility model;

[0025] Figure 5 A schematic diagram of an embodiment of the locking member of the present utility model is shown;

[0026] Figure numerals: 100, atomizing nozzle; 110, shell; 111, through hole; 111a, limiting section; 111b, nozzle accommodating section; 111c, docking section; 120, nozzle inner core; 120a, liquid inlet hole; 121, liquid inlet part; 121a, liquid inlet cavity; 122, reducing part; 122a, reducing cavity; 123, liquid spraying part; 123a, liquid spraying cavity; 130, end cover; 140, locking piece; 141, through hole; 150, sealing piece; 151, nozzle gasket; 152, locking piece gasket; 153, shell gasket. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0030] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0031] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0032] Please refer to Figure 1 and Figure 2 In an embodiment of the present application, an atomizing nozzle is provided, comprising a housing 110, a nozzle core 120, and an end cap 130. The housing 110 is the basic structure of the nozzle, and the nozzle core 120 and the end cap 130 are disposed within the housing 110. This embodiment is described using the nozzle structure used in cold rolling acid regeneration equipment as an example. Specifically, the housing 110 is provided with a through hole 111 extending through both ends. The housing 110 is installed in an existing structure for providing acid solution. The housing 110 is provided with an external hexagonal screw. For example, a hexagonal nut is provided at one end of the housing 110 to facilitate securing the housing 110 to the existing structure. An external thread can be provided at the other end of the housing 110 to facilitate securing the housing 110 by screwing. After securing the housing 110, atomizing spraying can be performed through the nozzle core 120. The nozzle core 120, made of a wear-resistant material, is placed within the through hole 111, and the outer side of the nozzle core 120 is sealed to the inner wall of the housing 110 at the through hole 111.

[0033] Please refer to Figure 3The nozzle inner core 120 includes a liquid inlet portion 121, a reducing portion 122 and a liquid spraying portion 123 connected in sequence, the two ends of the reducing portion 122 are respectively connected to the liquid inlet portion 121 and the liquid spraying portion 123, and a gap is provided between the liquid inlet portion 121 and the shell 110, and the fluid can enter the gap; the liquid inlet portion 121 is provided with a liquid inlet cavity 121a, a liquid inlet hole 120a passing through the liquid inlet cavity 121a and the gap, so that the fluid can enter the liquid inlet cavity 121a from the gap through the liquid inlet hole 120a, and a plurality of liquid inlet holes 120a are provided, such as two liquid inlet holes 120a arranged oppositely, with a hole diameter of 2.5mm, and the liquid inlet hole 120a is arranged in a direction inclined to the liquid inlet cavity 121a, so that the fluid entering the liquid inlet cavity 121a can rotate along the liquid inlet cavity 121a; the reducing portion 122 is provided with a connecting portion at both ends The variable diameter cavity 122a, the liquid spraying portion 123 is provided with a liquid spraying cavity 123a communicating with both ends, the liquid inlet cavity 121a and the liquid spraying cavity 123a are communicated through the variable diameter cavity 122a, and the end size of the variable diameter cavity 122a close to the liquid inlet cavity 121a is larger than the end size close to the liquid spraying cavity 123a, so that when the fluid enters the liquid spraying cavity 123a from the liquid inlet cavity 121a, the flow cross-section through the variable diameter cavity 122a is reduced, and the atomized fluid is generated and then sprayed out; the end cover 130 is connected to the end of the liquid inlet portion 121 and closes the liquid inlet cavity 121a, such as a boss is provided on one side of the end cover 130, the outer edge of the boss is provided with a thread, and the inner wall of the end of the liquid inlet portion 121 is provided with an internal thread, the end cover 130 and the liquid inlet portion 121 are fixed by a threaded connection, and the end cover 130 can also be fixed to the liquid inlet portion 121 in other ways.

[0034] The nozzles of the prior art have a short lifespan when atomizing acid liquid. This is because, on the one hand, the nozzles are prone to rapid wear under the corrosion of the acid liquid, and on the other hand, the nozzle holes are generally small and easily clogged after long-term use. Currently, there is no more suitable nozzle. The present application uses the shell 110, nozzle core 120 and end cover 130 made of acid-resistant materials to increase the service life of the nozzle and reduce wear. At the same time, the present application concentrates the pressurization and liquid spraying processes in the nozzle core 120. Since the gap surrounds the nozzle core 120 and has a larger area, and the aperture of the liquid inlet hole 120a is smaller, the fluid enters the liquid inlet cavity 121a through the liquid inlet hole 120a and undergoes the first pressurization. It can move along the inner wall in the liquid inlet part 121 and can generate secondary pressurization under high-speed flow. It then enters the liquid spraying part 123 through the diameter-reducing part 122 to achieve third pressurization, and finally is sprayed outward through the liquid spraying part 123. In this way, the fluid can always maintain a high flow rate in the nozzle core 120, and finally can be fully atomized when entering the liquid spraying part 123, so it can have a better atomization effect after passing through the nozzle core 120.

[0035] On the one hand, the nozzle core 120 made of wear-resistant material concentrates the pressurization and liquid spraying processes, reducing the wear of the fluid on the shell 110, and the fluid state of the fluid in the nozzle core 120 can be stably transitioned, reducing the internal impact and slowing down the wear. On the other hand, the fluid can maintain a high flow rate in the nozzle core 120, which can reduce the occurrence of blockage of the nozzle core 120 under multiple pressurization and high-speed conditions. In this way, the present application can provide a fully shaped and stable atomized fluid for a long time, stabilize the BET value of the iron oxide powder in a higher range, make the quality of the iron oxide powder continuously stable, maintain stable use for a long life, reduce the situation of excessive wear and frequent blockage of the nozzle, and reduce production costs. According to the implementation situation, the nozzle structure procurement cost can be saved by 143,000 yuan per year; the frequency of nozzle blockage is reduced, ensuring stable and continuous production, reducing the consumption of energy and medium between start-up and shutdown, reducing the labor intensity of employees, and the nozzle spraying atomization effect is sufficient, and the wear resistance is excellent, so that the BET value of the iron oxide powder is continuously stable at above 3.0㎡ / g without abnormal fluctuations.

[0036] In an optional embodiment, the housing 110 is a titanium alloy structural component. This has the advantages of high strength, light weight, and acid corrosion resistance, which can reduce the wear and tear caused by the use of the atomizing nozzle 100. In an optional embodiment, the nozzle core 120 is a ceramic structural component, and the end cover 130 can also be a ceramic structural component. In this way, the nozzle core 120 and the end cover 130 have high wear resistance, which greatly reduces the wear and tear of the nozzle core 120 caused by the high-speed fluid. In this application, the three pressurization and liquid spraying processes are concentrated in the nozzle core 120. This can minimize the wear and tear of the fluid on the entire atomizing nozzle 100 and extend its service life.

[0037] In an optional embodiment, the liquid inlet hole 120a is tangentially connected to the liquid spray chamber 123a, the liquid inlet hole 120a is inclined to the liquid spray portion 123 and the liquid inlet hole 120a is connected to the outer side of the liquid spray chamber 123a, and is tangent to the inner wall of the liquid spray portion 123 at the liquid spray chamber 123a. The inclination of the liquid inlet hole 120a is set to provide an axial component velocity for the fluid, so that the fluid entering the liquid spray chamber 123a moves in a circumferential spiral motion in the liquid spray chamber 123a. The fluid has a higher speed, the fluid performs high-speed spiral motion, and the fluid is always subjected to the force of the inner wall of the liquid spray portion 123. In an alternative embodiment, the size of the variable diameter cavity 122a gradually decreases from the end near the liquid inlet cavity 121a to the end near the liquid spray cavity 123a. As shown in the figure, the left end of the variable diameter cavity 122a is larger than the right end. To ensure a smooth transition, the inner wall of the variable diameter portion 122 is designed to be smooth and funnel-shaped. This allows the fluid to smoothly enter the liquid spray cavity 123a from the liquid inlet cavity 121a, reducing internal fluid energy consumption. In an alternative embodiment, the dimensions of the nozzle core 120 are as follows: the outer diameter of the liquid inlet portion 121 is φ15 mm, the inner diameter of the end opening of the liquid inlet portion 121 is 2.5 mm, and the total length of the nozzle core 120 is 18 mm. The outer diameter of the variable diameter portion 122 is equal to that of the liquid inlet portion 121, and the outer diameter of the liquid spray portion 123 is smaller than that of the variable diameter portion 122. This creates a step-like shape at the connection between the liquid spray portion 123 and the variable diameter portion 122, which facilitates the nozzle core 120 to be stuck in the through hole 111.

[0038] Please refer to Figure 4 In an optional embodiment, the through hole 111 is divided into a limiting section 111a and a nozzle accommodating section 111b from one end to the other. The limiting section 111a is smaller than the nozzle accommodating section 111b, so that the nozzle core 120 is stuck in the shell 110. The size of the limiting section 111a matches the liquid spraying portion 123, so that the liquid spraying portion 123 can be stuck in the limiting section 111a. The length of the liquid spraying portion 123 is smaller than the length of the limiting section 111a. The diameter-reducing portion 122 and the liquid inlet portion 121 are located in the nozzle accommodating section 111b. A step-like structure is also formed between the nozzle accommodating section 111b and the limiting section 111a, so that the diameter-reducing portion 122 and the liquid inlet portion 121 are stuck together in the nozzle accommodating section 111b, and there is a gap between the liquid inlet portion 121 and the shell 110. In the nozzle accommodating section 111b corresponding to the liquid inlet portion 121, the outer diameter of the liquid inlet portion 121 is smaller than the size of the nozzle accommodating section 111b, so that a gap is formed on the outside of the liquid inlet portion 121 in the nozzle accommodating section 111b, and the gap is annular and arranged around the liquid inlet portion 121.

[0039] Please refer to Figure 5In an optional embodiment, a locking member 140 is further included, and the through-hole 111 further includes a docking section 111c. The locking member 140 is connected to the docking section 111c. The locking member 140 is provided with a through-hole 141 for liquid inlet, and the through-hole 141 is connected to the gap. The docking section 111c is larger than the nozzle accommodating section 111b. In an optional embodiment, the locking member 140 is a titanium alloy structural member. The outer edge of the locking member 140 is provided with an external thread, and the inner edge of the docking section 111c of the housing 110 is provided with an internal thread. In this way, the locking member 140 is connected and fixed to the housing 110 through a threaded matching method and can be tightened by rotation. To facilitate twisting, the outer end of the locking member 140 is provided with an external hexagon, which can be operated with a wrench. In an optional embodiment, the locking member 140 is pressed against the end cover 130 so that the nozzle core 120 is clamped in the shell 110 through the end cover 130. When the locking member 140 is tightened to one end of the shell 110, the locking member 140 supports the end cover 130 so that the end cover 130 is tightly fixed to the end of the liquid inlet portion 121 in a covering manner, and the end cover 130 and the end of the liquid inlet portion 121 are tightly sealed. The locking member 140 provides a tightening force, which can maintain a certain pressure of the fluid in the liquid inlet chamber 121a and prevent the end cover 130 from being displaced under the action of high pressure.

[0040] In an optional embodiment, a plurality of through holes 141 are provided, and the plurality of through holes 141 are spaced apart from each other, such as 6 through holes 141 distributed in a ring shape, each through hole 141 is spaced apart from each other, and the position of each through hole 141 corresponds to the annular gap, so that the acid can pass through the 6 through holes 141 and enter the gap; the existing nozzle structure is a single channel, and the present application can fully meet the process spray flow requirements through multiple through holes 141, and also has a spare fluid channel, which also avoids the problem that the existing nozzle structure cannot work after the single channel is blocked.

[0041] In an optional embodiment, the present application is further provided with a seal 150, which is provided in multiple places. Sealing is provided by the seal 150. A locking member gasket 152 is provided between the locking member 140 and the end cover 130. A sealing groove is recessed on the end surface of the locking member 140 facing the end cover 130, and the locking member gasket 152 is inserted into the sealing groove. The locking member gasket 152 is a soft seal 150, such as a rubber sealing ring. The locking member gasket 152 protrudes from the locking member 140, so that the locking member 140 can press the end cover 130 tighter. In an optional embodiment, a nozzle gasket 151 is provided between the reducing portion 122 or the liquid spraying portion 123 and the shell 110. For example, at the connection between the reducing portion 122 and the liquid spraying portion 123, the nozzle gasket 151 is sleeved on the liquid spraying portion 123. The outer diameter of the nozzle gasket 151 matches the outer diameter of the reducing portion 122, so that the nozzle gasket 151 can form a tight seal between the liquid spraying portion 123 and the inner wall of the shell 110. The nozzle gasket 151 is a soft seal 150, such as a PVC sealing ring. In an optional embodiment, a shell gasket 153 is provided on the side of the shell 110 opposite to the liquid spraying part 123, and a sealing groove is recessed on the same side as the locking piece 140 on the shell 110, and the shell gasket 153 is snapped into the sealing groove. When the shell 110 is connected to a structural part that provides acid liquid, such as the shell 110 is connected to the liquid spraying pipe, a seal can be formed between the shell 110 and the structural part through the shell gasket 153. The locking piece gasket 152 is a soft sealing part 150, such as a silicone sealing ring.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "optional example" or "optional implementation" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0043] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0044] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An atomizing nozzle, characterized in that: include: The housing (110) is provided with through holes (111) passing through both ends; The nozzle inner core (120) is made of a wear-resistant material and is placed in the through hole (111). The nozzle inner core (120) and the shell (110) are sealed. The nozzle inner core (120) includes a liquid inlet portion (121), a diameter-reducing portion (122) and a liquid spraying portion (123) connected in sequence. There is a gap between the liquid inlet portion (121) and the shell (110). The liquid inlet portion (121) is provided with a liquid inlet cavity (121a), a liquid inlet cavity (121a) and a liquid spraying portion (123). ) and a liquid inlet hole (120a) in the gap, the diameter-changing portion (122) is provided with a diameter-changing cavity (122a) communicating with both ends, the liquid spraying portion (123) is provided with a liquid spraying cavity (123a) communicating with both ends, the liquid inlet cavity (121a) and the liquid spraying cavity (123a) are communicated through the diameter-changing cavity (122a), and the end portion of the diameter-changing cavity (122a) close to the liquid inlet cavity (121a) has a larger dimension than the end portion close to the liquid spraying cavity (123a); An end cover (130) is connected to the end of the liquid inlet portion (121) and closes the liquid inlet cavity (121a).

2. The atomizing nozzle according to claim 1, characterized in that The liquid inlet hole (120a) is tangentially connected to the liquid spraying cavity (123a), so that the fluid entering the liquid spraying cavity (123a) moves in a circumferential spiral in the liquid spraying cavity (123a).

3. The atomizing nozzle according to claim 1, characterized in that The size of the variable diameter cavity (122a) gradually decreases from the end close to the liquid inlet cavity (121a) to the end close to the liquid spraying cavity (123a).

4. The atomizing nozzle according to claim 1, characterized in that The through hole (111) is sequentially divided into a limiting section (111a) and a nozzle accommodating section (111b) from one end to the other end; the limiting section (111a) is smaller than the nozzle accommodating section (111b), so that the nozzle inner core (120) is stuck in the shell (110); the diameter-changing portion (122) and the liquid inlet portion (121) are located in the nozzle accommodating section (111b); and a gap is provided between the liquid inlet portion (121) and the shell (110).

5. The atomizing nozzle according to claim 4, characterized in that It also includes a locking piece (140), the through hole (111) also includes a docking section (111c), the locking piece (140) is connected to the docking section (111c), the locking piece (140) is provided with a through hole (141) for liquid inlet, and the through hole (141) is connected to the gap.

6. The atomizing nozzle according to claim 5, characterized in that There are a plurality of through holes (141), and the plurality of through holes (141) are spaced apart from each other.

7. The atomizing nozzle according to claim 5, characterized in that The locking member (140) is pressed against the end cover (130), so that the nozzle core (120) is clamped in the housing (110) through the end cover (130).

8. The atomizing nozzle according to any one of claims 5 to 7, characterized in that: A locking member gasket (152) is provided between the locking member (140) and the end cover (130).

9. The atomizing nozzle according to any one of claims 1 to 7, characterized in that: A nozzle gasket (151) is provided between the diameter-changing portion (122) or the liquid spraying portion (123) and the housing (110).

10. The atomizing nozzle according to any one of claims 1 to 7, characterized in that: A shell gasket (153) is provided on the side of the shell (110) opposite to the liquid spraying portion (123).

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