CN220612316U - Atomizing spray disc with rotary airflow structure - Google Patents
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- CN220612316U CN220612316U CN202321729361.0U CN202321729361U CN220612316U CN 220612316 U CN220612316 U CN 220612316U CN 202321729361 U CN202321729361 U CN 202321729361U CN 220612316 U CN220612316 U CN 220612316U
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- 239000007921 spray Substances 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 abstract description 48
- 239000002184 metal Substances 0.000 abstract description 29
- 239000007788 liquid Substances 0.000 abstract description 27
- 238000000889 atomisation Methods 0.000 abstract description 26
- 238000009689 gas atomisation Methods 0.000 abstract description 9
- 230000000903 blocking effect Effects 0.000 abstract description 8
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- 239000007789 gas Substances 0.000 description 36
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- 230000000694 effects Effects 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model relates to an atomization spray disc with a rotary airflow structure, and belongs to the field of gas atomization metal powder preparation. The atomizing spray disk comprises an atomizing disk body, an atomizing disk core, an air inlet pipe and an adjusting rotary vane. The two sides of the atomizing disk body are provided with air inlets, and asymmetric air inlet is adopted. The atomizing disk body and the atomizing disk core are in threaded and welded connection to form a closed inner cavity with an annular outlet. The adjusting rotary vane is in threaded connection with the atomizing disk core and is used for adjusting the extension length of the atomizing nozzle. After gas enters the inner cavity of the atomizing disc through the gas inlet pipe, the unique asymmetric gas inlet structure reduces the kinetic energy loss caused by the opposite impact of the gas flow, so that the atomization is more sufficient, and the atomization actual yield is improved; meanwhile, the high-pressure high-speed gas rotates behind the inner cavity, so that powder is dispersed circumferentially, metal liquid drops are dispersed radially through centrifugal action, the collision probability of the powder is reduced, the formation of satellite balls is reduced, and the surface quality of the powder is improved. In addition, the symmetrical gas flow distribution effectively reduces the turbulent flow area of the gas flow field, and reduces the blocking probability of the metal liquid flow.
Description
Technical Field
The utility model belongs to the technical field of atomization powder making equipment, and relates to an atomization disc for gas atomization powder making.
Background
The atomizing powder process is a powder process in which a rapidly moving fluid (atomizing medium) impinges or otherwise breaks up a metal or alloy liquid into fine droplets, which are then condensed into a solid powder. The atomization pulverizing method is classified into a "double flow method" (crushing the alloy flow with an atomized medium flow) and a "single flow method" (crushing the alloy flow in other ways). The atomizing medium of the former is divided into gas (argon, nitrogen, air) and liquid (water, oil); the latter such as centrifugal atomization.
The atomizing disk used by the gas atomization powder making equipment changes the flow field, the air pressure and the speed of the air flow through the fixed cavity, thereby influencing the crushing effect of the molten metal. At present, the most adopted gas atomization plate is a tightly coupled gas atomization technology, and through the design of the atomization plate, the gas flow focus is close to the liquid flow outlet, and the high-speed gas impacts the metal liquid flow at the shortest distance, so that the kinetic energy loss of the high-speed gas flow is reduced, and the atomization efficiency is improved. Specifically, fig. 1 and 2 show the following. Chinese patent (CN 111730060B) discloses a narrow-particle-diameter metal powder atomizing spray disc for gas atomization additive manufacturing, wherein the spray vertex angle alpha 1 is 15-60 degrees, high-speed gas is gathered at a liquid flow outlet, a gas flow focal point is too close to a nozzle, a turbulent flow field is easily formed, and the probability of liquid flow blockage is improved. At present, in order to ensure that the air flow fields of the inner cavity of the atomizing disk and the air outlet are stable and uniform, an air inlet pipe of the atomizing disk is generally symmetrically designed, and high-pressure and high-speed air collides in the inner cavity of the atomizing disk, so that more kinetic energy is lost.
Centrifugal atomization utilizes a rotating motor to drive an atomizing disk to rotate, and the metal liquid flow is broken into liquid drops through centrifugal throwing action of a rotating body, and the liquid drops and a cooling medium realize heat exchange in the flight process and finally solidify into alloy powder. As particularly shown in fig. 3. The metal liquid flow moves along the radial direction under the action of centrifugal force and diverges to the periphery, powder basically cannot collide before colliding to the inner wall of the atomization tower body, a longer cooling path and lower collision probability ensure that metal liquid drops basically cannot collide before solidification, powder satellite balls are greatly reduced, and the surface quality of the powder is greatly improved. Conventional gas atomization does not have the advantage of centrifugal atomization, and a large amount of satellite powder is generally formed, so that the powder morphology is poor.
Disclosure of Invention
The utility model aims to provide an atomization spray disc with a rotary airflow structure, which is used for solving the problems of gas turbulence caused by turbulence and atomization nozzle blockage caused by back blowing of molten metal in the prior art, and reducing the pressure at the lower part of the atomization disc through a specific outlet structure design so as to ensure smooth atomization. Meanwhile, an air flow field is optimized, centrifugal atomization is used as a reference, certain centrifugal kinetic energy is given to powder, powder collision is reduced, and then formation of satellite balls is reduced.
In order to achieve the above purpose, the utility model adopts a specific scheme that on the conventional gas atomization plate structure, two side gas inlet pipes are arranged in an asymmetric structure, and a gas outlet is designed by using the Laval effect, and the innovation is that:
the design of the air inlet pipes at two sides of the asymmetric structure arrangement enables the air flow to form rotary air flow in the inner cavity of the atomizing disk, reduces air flow opposite flushing and turbulence caused by symmetric arrangement, and simultaneously enables the metal liquid flow to be further dispersed by the rotary air flow so as to promote full atomization. Further centrifugal dispersion of the metal stream reduces the probability of powder collisions and reduces the formation of powder satellites. Centrifugal atomization and traditional gas atomization technologies are combined to a certain extent.
The gas outlet is narrowed in the middle, so that the gas flow speed and pressure can be changed, the pressure at the lower part of the liquid guide pipe is reduced, the metal liquid flows down more smoothly, and the blocking risk is reduced. The structure can enable the speed of the air flow to change due to the change of the spray sectional area, accelerate the air flow, further improve the kinetic energy of the air and strengthen the crushing effect of the air flow.
According to the technical scheme, the air inlet pipes on two sides are asymmetrically arranged, the distance between the central lines of the two air inlet pipes is preferably 15-40mm, the distance is too small, the kinetic energy loss caused by air flow opposite flushing is large, and the uneven air outlet of the air outlet can be caused by too large distance. The air inlet at the side edge of the atomizing disk adopts a threaded connection and sealing gasket mode, so that the sealing of an air inlet end is ensured, no leakage exists, the bottom surface is machined into a plane during the machining of the bottom of the air inlet end, and the sealing effect of the sealing gasket is ensured.
In the design scheme, the inner diameter of the air inlet pipe is 15-25mm, and the smaller pipe diameter can further improve the gas flow rate.
The gas outlet in the design scheme is preferably designed to adopt an included angle of 35-50 degrees, and the smaller included angle can cause the gas flow focus to be far away from the metal liquid outlet and cannot be fully broken; the larger included angle can cause back blowing of gas to form liquid flow blockage.
The design size of the gas outlet in the design proposal is preferably 0.5-2mm, and the smaller gas outlet is easy to be blocked by the back-blowing metal liquid flow; the larger gas outlet reduces the gas flow rate, affecting the crushing effect.
In order to realize the design and application, the atomizing disk is connected with the atomizing tower body by adopting bolts, so that the connection effectiveness is ensured.
In order to realize the design and application, the sealing groove is designed at the lower part of the atomizing disk, the sealing ring is adopted to ensure that the atomizing disk and the atomizing tower body are gapless, no gas leakage exists, and the stable airflow field is ensured.
In order to realize the design and application, the atomizing disk adopts a threaded structure to adjust the extending distance of the nozzle, and the adjusting rotary vane can effectively control the extending length of the nozzle so as to influence the air outlet flow field of the nozzle.
In order to realize the design and application, the air inlet pipe is designed to be used for clamping the spanner, so that the air pipe is convenient to be connected with the atomizing disk.
In order to realize the design and application, the atomizing disk core and the atomizing disk are processed in a split way.
In order to realize the design and application, the atomizing disk core is connected with the atomizing disk in a thread and welding mode, and the width of the air outlet gap can be controlled by adjusting the threads; the welding ensures the tightness of the device and no leakage.
In order to realize the design and application, the screw pitch of the connecting part of the atomizing disk core and the atomizing disk is preferably 0.8-1.5mm, so that the width of the air outlet gap can be conveniently adjusted.
In order to realize the design and application, the atomizing disk core is matched with the adjusting rotary vane for use, and the connection is in threaded connection. The inner circle of the atomizing disk core is provided with threads, the size of the rotary vane relative to the atomizing disk is adjusted and regulated by adjusting the screw-in size of the rotary vane, and then the extension distance of the ceramic nozzle is adjusted.
The beneficial effects are that: the atomizing spray disk comprises an atomizing disk main body, an atomizing disk core, an air inlet pipe and an adjusting rotary vane, and is used for atomizing molten metal gas after being assembled. The atomizing spray disc adopts mechanical threaded connection, auxiliary tools such as a sealing ring are matched to be connected with an atomizing tower body, air inlets are formed in two sides of the atomizing disc body, asymmetric air inlet is adopted, and the air inlet pipe is connected with an atomizing gas main pipeline through threads and the sealing ring. The atomizing disk main body and the atomizing disk core are in threaded and welded connection to form a closed inner cavity with an annular outlet. The adjusting rotary vane is in threaded connection with the atomizing disk core and is used for adjusting the extending length of the atomizing nozzle, thereby influencing the negative pressure in the tower and adjusting the atomizing rate. After gas enters the inner cavity of the atomizing disc through the gas inlet pipe, the unique asymmetric gas inlet structure design reduces the kinetic energy loss caused by the opposite impact of the gas flow, so that the atomization is more sufficient, the formation of atomized flaky and large lump materials is reduced, and the atomization actual yield is improved; meanwhile, the high-pressure high-speed gas rotates behind the inner cavity, the high-speed gas with rotational kinetic energy makes powder disperse circumferentially, and metal liquid drops diffuse radially through centrifugal action, so that the collision probability of the powder is reduced, the formation of satellite balls is reduced, and the surface quality of the powder is improved. In addition, the symmetrical gas flow distribution effectively reduces the turbulent flow area of the gas flow field, and reduces the blocking probability of the metal liquid flow.
Drawings
FIG. 1 is a schematic diagram of a prior art aerosolized powder process apparatus;
FIG. 2 is a schematic diagram of aerosolized milling in the prior art;
FIG. 3 is a prior art diagram of a centrifugal atomizing mill operation;
FIG. 4 is a schematic view of the structure of the atomizing spray disk described in the present application;
FIG. 5 is a three-dimensional model of the overall structure of the atomizing disk;
FIG. 6 is a front view and A and B cross-sectional views of an atomizer disk;
FIG. 7 is a cross-sectional view of an atomizing disk core;
FIG. 8 is a cross-sectional view of an atomizing disk air inlet tube;
FIG. 9 is a cross-sectional view of an adjustment knob;
FIG. 10 is an air intake schematic of an atomizing spray disk as described herein; wherein the arrow indicates the direction of the rotating air flow;
in fig. 4 to 10, 1, an atomizing disk body; 2. an atomizing disk core; 3. adjusting the rotary vane; 4. an air inlet pipe;
FIG. 11 is a powder morphology plot (x 1000) of the preparation of example 1;
FIG. 12 is a powder morphology (100) of the preparation of example 2.
Detailed Description
The utility model provides an atomizing spray disc with rotatory air current structure, is including being used for atomizing by atomizing the atomizing spray disc that atomizing disc core 2 and atomizing disc body 1 constitute, wherein intake pipe 4 is used for connecting gaseous trunk line and atomizing spray disc, adjusts the extension length that rotary vane 3 is used for adjusting upper portion atomizing nozzle. The atomizing spray disc energizes the high-speed airflow through the air inlet and air outlet modes of the specific inner cavity, so that the atomizing blocking rate of the metal liquid flow is reduced, the atomizing efficiency is improved, and the formation of satellite balls caused by powder collision is reduced.
The specific cavity air inlet mode comprises the following steps of: the asymmetric structure is adopted to arrange the air inlet pipelines at two sides and the inner cavity air inlet channel, and the distance between the air inlet pipelines at two sides is 15-40mm.
The specific air outlet mode is as follows: the atomizing disk core 2 and the atomizing disk body 1 are connected by adopting threads and welding, wherein the threads are connected to adjust the size of a circular seam gap of the air outlet, and the size of the circular seam gap is 0.5-2mm; the welded connection ensures the tightness of the upper connection.
The specific air outlet mode is that the middle part of the air outlet of the atomizing disk body 1 is closed, so that an air outlet gap forms a girdle.
The air inlet pipe 4 is used for connecting a main gas pipeline and the atomizing spray disc, adopts threaded connection, and is flat-bottomed in the bottom of the thread part of the atomizing disc body 1, so that the use effect of the sealing ring is ensured.
The adjusting rotary vane 3 is used for adjusting the extension length of the upper ceramic discharge spout, threads are processed on the inner edge of the atomizing disk core 2, the adjusting rotary vane 3 is screwed in the rotary vane through adjusting the screw thread, the height dimension of the adjusting rotary vane 3 relative to the atomizing disk body 1 is adjusted, and then the extension length of the ceramic discharge spout is adjusted. The ceramic discharge spout is attached to the adjusting rotary vane 3, and the position of the adjusting rotary vane 3 is lower, namely the extension length of the discharge spout is larger.
The air outlet of the atomizing disc core 2 is in a cone angle, the cone angle is 35-50 degrees, the cone angle is smaller, the focus of atomizing airflow is prolonged, and the crushing effect is reduced; the conical angle is larger, the focal point of the air flow is close to the air outlet, and the turbulent flow of the air flow is easy to generate blocking.
The rotary air flow structure atomizing spray disc is characterized in that a groove for placing a sealing ring is formed in the bottom of the atomizing spray disc, so that the overall tightness is ensured, and no air leakage is caused.
Embodiments of the present utility model will be further described with reference to the accompanying drawings and examples.
The present embodiment describes an atomizing disk having a rotary airflow structure, which has a structure such as an atomizing disk core 2, an adjusting vane 3, an atomizing disk body 1, and an air intake pipe 4, and which adopts an asymmetric air intake system.
In this embodiment, the atomizing nozzle contacts with the adjusting rotary vane 3, and the distance between the atomizing nozzle and the atomizing disk is adjusted by adjusting the threaded connection length of the rotary vane 3 and the atomizing disk core 2, so as to adjust the extending length of the nozzle. The atomizing disk core 2 and the atomizing disk body 1 are connected by adopting threads and welding to form a closed inner cavity with a circular seam outlet. The machining of the atomizing disk core 2, the adjusting rotary vane 3, the atomizing disk body 1 and the air inlet pipe 4 is completed by adopting stainless steel. Firstly, the integral assembly work of the atomizing disk is carried out. And selecting the atomizing disc body 1 and the atomizing disc core 2 for connection. The atomizing disk core 2 is screwed into the atomizing disk body 1 through threads, the threads are adjusted, and then the size (0.5-2 mm) of the air outlet gap is adjusted. After the size of the air outlet gap is determined, the gap at the threaded connection part of the upper atomizing disk core 2 and the atomizing disk body 1 is sealed in a welding mode, so that the sealing effect is ensured, and no air leakage is caused by air pressure detection.
In the embodiment, the air inlet pipe 4 is in mechanical threaded connection with the atomizing disk body 1, and before connection, a high-temperature-resistant sealing ring is placed at the end part of the air inlet pipe, and then the threads are screwed, so that the tightness of the air inlet part is maintained.
In this embodiment, the atomizing disk body 1 is connected with the atomizing tower body by mechanical threads. Counter bores are formed in the circumference of the outer side of the atomizing disc body 1, the counter bores are symmetrically designed, the number of the counter bores is 6/8, and the bolts are stainless steel bolts. Before connection, a high-temperature-resistant sealing ring is placed at a groove at the bottom of the atomizing disk body 1, and then threaded connection is carried out by using a bolt.
In this embodiment, adjust rotary vane 3 and atomizing core 2 adoption threaded connection, through adjusting precession screw revolution, adjust the rotary vane about the size, and then adjust the nozzle and stretch out length, finally influence the inside pressure size of atomizing tower body.
In this embodiment, a high-pressure gas is connected to the gas inlet pipe 4, and a high-speed atomizing gas is introduced. And a ceramic crucible and an atomizing nozzle are arranged at the upper part of the adjusting rotary vane 1 and are used for transferring the metal liquid flow. When atomization is carried out, firstly, gas is opened, high-speed airflow is sprayed out from a gap of an air outlet of an atomization disk, an airflow focus is formed at a certain distance, and meanwhile, based on the Bernoulli principle, high-speed fluid forms negative pressure in an atomization tower body. Then pouring metal liquid into the ceramic crucible, allowing the metal liquid flow to flow downwards to an air nozzle of an atomization plate to be discharged under the dual actions of gravity and negative pressure through a ceramic discharge spout, blowing away the metal liquid flow by the converged high-speed air flow, and then atomizing.
When high-speed air flows out of the atomizing disk through the air inlet pipe, the inner cavity of the atomizing disk and the air outlet gaps, the asymmetric air inlet structure can give certain rotational kinetic energy to the air flow, so that kinetic energy loss formed by opposite impact of the air flow is reduced, and meanwhile, the centrifugal effect generated by the rotational kinetic energy promotes atomized powder to spread to the circumference, so that the collision probability of the powder is reduced, and the formation of satellite balls is reduced. Meanwhile, the dispersion of the metal powder is beneficial to reducing the turbulent flow area of the gas field and reducing the blockage probability of the metal liquid flow. Fig. 10 is an intake schematic.
Example 1
The atomizing disc structure shown in fig. 4 and 5 is used, the air pressure is 5MPa, the inner diameter of an air inlet pipe is 15mm, the distance between two air inlet pipes is 20mm, the included angle between an atomizing disc core and the conical surface of the circular seam outlet of an atomizing disc body is 45 degrees, the size of the circular seam outlet gap is 0.8mm, the inner diameter of an atomizing nozzle is 4mm, the extending length of the nozzle is 4.5mm, niCr 80/20 component molten metal is atomized, the atomizing yield is detected by adopting an electronic scale, the powder particle size distribution is detected by adopting dry screening, and the powder morphology is detected by adopting a scanning electron microscope. The atomization actual yield is 97%, the atomization blocking probability is 5%, the powder particle size distribution is 0-180 mu m, and the particle size section of 15-53 mu m accounts for 40%; the powder has smooth surface, good sphericity and sphericity up to 90%. Can be used for producing fine-grained powder with the grain size of less than 53 mu m, and improves the real yield of the fine powder.
Example 2
The atomizing disk structure shown in fig. 4 and 5 is used, the air pressure is 4MPa, the inner diameter of an air inlet pipe is 15mm, the distance between two air inlet pipes is 20mm, the included angle between an atomizing disk core and the conical surface of the circular seam outlet of an atomizing disk body is 35 degrees, the size of the circular seam outlet gap is 1.5mm, the inner diameter of an atomizing nozzle is 5mm, the extending length of the nozzle is 4.2mm, the metal melt with Ni60A components is atomized, the atomizing yield is detected by adopting an electronic scale, the particle size distribution of powder is detected by adopting dry screening, and the appearance of the powder is detected by adopting a scanning electron microscope. The atomization actual yield is 92%, the atomization blocking probability is 3%, the powder particle size distribution is 0-250 μm, wherein the particle size section of 45-106 μm accounts for 47%; the powder has smooth surface, few satellite balls, good sphericity and sphericity rate up to 87%. Can be used for producing coarse powder with the granularity of more than 53 mu m, and improves the actual yield of coarse powder.
Example 3
The atomizing disk structure shown in fig. 4 and 5 is used, the air pressure is 4.5MPa, the inner diameter of an air inlet pipe is 15mm, the distance between two air inlet pipes is 15mm, the included angle between an atomizing disk core and the conical surface of the circular seam outlet of an atomizing disk body is 38 degrees, the size of the circular seam outlet gap is 1mm, the inner diameter of an atomizing nozzle is 5mm, the extending length of the nozzle is 4.2mm, the metal melt with Ni60A components is atomized, the atomizing yield is detected by adopting an electronic scale, the particle size distribution of powder is detected by adopting dry screening, and the appearance of the powder is detected by adopting a scanning electron microscope. The atomization actual yield is 95%, the atomization blocking probability is 3%, the powder particle size distribution is 0-250 mu m, wherein the 15-53 mu m particle size section accounts for 30%, and the 45-106 mu m particle size section accounts for 32%; the powder has smooth surface, few satellite balls, good sphericity and sphericity up to 90%. Can be used for producing two conventional particle size powders of 15-53 μm and 45-106 μm.
It should be noted that the above-mentioned embodiments are to be understood as illustrative, and not limiting, the scope of the utility model, which is defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made to the present utility model without departing from its spirit or scope.
Claims (9)
1. An atomizing spray disc with rotatory air current structure, its characterized in that: comprises an atomizing disk body (1), an atomizing disk core (2), an air inlet pipe (4) and an adjusting rotary vane (3);
the two sides of the atomizing disk body (1) are respectively connected with an air inlet pipe (4), and the air inlet pipes (4) at the two sides are asymmetrically arranged; the free end of the air inlet pipe (4) is connected with a main gas pipeline;
the atomizing disc core (2) is screwed into the central position of the atomizing disc body (1) through threads to form a closed cavity with a circular seam outlet; the threaded connection part of the atomizing disc core (2) and the atomizing disc body (1) is sealed in a welding mode;
the atomizing disc core (2) is in threaded connection with the adjusting rotary vane (3), and the adjusting rotary vane (3) is in contact with the atomizing nozzle; the extension length of the atomizing nozzle is adjusted by adjusting the screw thread screwing-in revolution of the rotary vane (3) in the atomizing disc core (2), and the extension length of the atomizing nozzle is 3-5mm.
2. An atomizing spray disk with a rotary air flow structure as set forth in claim 1, wherein: the distance between the air inlet pipes (4) at the two sides is 15-40mm.
3. An atomizing spray disk with a rotary air flow structure as set forth in claim 1, wherein: the inner diameter of the air inlet pipe (4) is 15-25mm.
4. An atomizing spray disk with a rotary air flow structure as set forth in claim 1, wherein: the sealing ring is arranged at the connecting end of the air inlet pipe (4) and the atomizing disc body (1), and the air inlet pipe (4) is in mechanical threaded connection with the atomizing disc body (1).
5. An atomizing spray disk with a rotary air flow structure as set forth in claim 1, wherein: the size of a circular seam gap formed between the atomizing disc core (2) and the atomizing disc body (1) is 0.5-2mm, and the size of the circular seam gap of the air outlet is adjusted through threads.
6. An atomizing spray disk with a rotary air flow structure as set forth in claim 1, wherein: the atomizing disk body (1) adopts a middle closing-in design at the air outlet.
7. An atomizing spray disk with a rotary air flow structure as set forth in claim 1, wherein: the screw thread bottom that is used for being connected with atomizing disk core (2) on atomizing disk body (1) is processed into flat bottom.
8. An atomizing spray disk with a rotary air flow structure as set forth in claim 1, wherein: the air outlet of the atomizing disc core (2) is in a cone angle which is between 35 ︒ and 50 ︒; the size of the air outlet is 0.5-2mm.
9. An atomizing spray disk with a rotary air flow structure as set forth in claim 1, wherein: counter-sunk holes are formed in the circumference of the outer side of the atomizing disc body (1), and the counter-sunk holes are symmetrically designed and are 6 or 8 in number; the bottom of the atomizing disk body (1) is provided with a groove, a sealing ring is placed in the groove, and the atomizing disk body (1) is in threaded connection with the atomizing tower body by adopting a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321729361.0U CN220612316U (en) | 2023-07-04 | 2023-07-04 | Atomizing spray disc with rotary airflow structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321729361.0U CN220612316U (en) | 2023-07-04 | 2023-07-04 | Atomizing spray disc with rotary airflow structure |
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| CN220612316U true CN220612316U (en) | 2024-03-19 |
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| CN202321729361.0U Active CN220612316U (en) | 2023-07-04 | 2023-07-04 | Atomizing spray disc with rotary airflow structure |
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2023
- 2023-07-04 CN CN202321729361.0U patent/CN220612316U/en active Active
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