CN115155833A - Fine tuning type electromagnetic spray gun - Google Patents
Fine tuning type electromagnetic spray gun Download PDFInfo
- Publication number
- CN115155833A CN115155833A CN202210956883.8A CN202210956883A CN115155833A CN 115155833 A CN115155833 A CN 115155833A CN 202210956883 A CN202210956883 A CN 202210956883A CN 115155833 A CN115155833 A CN 115155833A
- Authority
- CN
- China
- Prior art keywords
- spray gun
- electromagnetic
- nozzle
- electromagnetic coil
- punching needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007921 spray Substances 0.000 title claims abstract description 66
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000004080 punching Methods 0.000 claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 238000005507 spraying Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
- B05B1/3053—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice the actuating means being a solenoid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/01—Spray pistols, discharge devices
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses a fine-tuning electromagnetic spray gun, which comprises a liquid cavity for containing liquid and a nozzle arranged on the spray gun, wherein a movable punching needle is arranged in the liquid cavity, and one end of the punching needle blocks the nozzle in a natural state; the spray gun is provided with an electromagnetic coil for driving the punching needle to axially separate from the nozzle, the spray gun is also internally provided with a reset structure for driving the punching needle to return to a natural state, and the electromagnetic coil and the reset structure are combined to drive the punching needle to axially reciprocate. According to the invention, the electromagnetic coil and the reset structure drive the punch needle to impact the nozzle in a reciprocating manner so as to realize a dot-shaped spraying effect in the traditional spray gun, an external air pump is not required, the structure on the spray gun is simplified, external pipelines are reduced, and the convenience in operation is increased.
Description
Technical Field
The invention relates to the field of spray guns, in particular to a fine adjustment type electromagnetic spray gun.
Background
In order to ensure that the sprayed liquid can form punctiform liquid drops and be uniformly sprayed, the traditional spray gun generally needs to be connected with an air pump, and the liquid is pumped by negative pressure generated by compressed air so as to be sprayed out from a nozzle.
The spray gun is connected with the liquid supply device and the air outlet devices such as the air pump in such a way, so that the spray gun has multiple pipelines and a complex structure, certain preparation work is required before use, the operation is complicated, the pipeline needs to be arranged constantly to avoid pulling and knotting in use, and the operation is inconvenient.
Disclosure of Invention
In order to solve at least one of the technical problems mentioned in the background, the present invention is directed to a trimming type electromagnetic spray gun to simplify a structure of the spray gun while maintaining a function of high-efficiency spraying.
In order to achieve the purpose, the invention provides the following technical scheme:
a fine-tuning electromagnetic spray gun comprises a liquid cavity for containing liquid and a nozzle arranged on the spray gun, wherein a movable punching needle is arranged in the liquid cavity, and one end of the punching needle is plugged with the nozzle in a natural state; the spray gun is provided with an electromagnetic coil for driving the punching needle to axially separate from the nozzle, the spray gun is also internally provided with a reset structure for driving the punching needle to return to a natural state, and the electromagnetic coil and the reset structure are combined to drive the punching needle to axially reciprocate.
Compared with the prior art, the invention has the beneficial effects that: the electromagnetic coil and the reset structure drive the punch needle to reciprocate to impact the nozzle so as to realize the dot-shaped injection effect in the traditional spray gun, an external air pump is not needed, the structure on the spray gun is simplified, external pipelines are reduced, and the convenience in operation is increased.
The electromagnetic coil is driven to act through a magnetic field, a magnetic field is generated when the electromagnetic coil is switched on, instantaneous driving force can be generated for the impact pin, response is quick, and the driving effect is strong.
Furthermore, the electromagnetic coil surrounds the middle part of the spray gun along the circumferential direction, the tail end of the punching needle is connected with a plug pin used for acting and responding to the electromagnetic coil, the plug pin is movably sleeved in the spray gun in a penetrating mode, the plug pin responds to the magnetic field of the electromagnetic coil, acts instantaneously and responds quickly.
Furthermore, the reset structure comprises a push rod movably sleeved in the spray gun, one end of the push rod is abutted against the bolt, the other end of the push rod is connected with a spring, the spring provides thrust towards one side of the bolt along the axial direction for the push rod, continuous pushing force is provided, and the action is flexible.
Furthermore, the tail end of the spray gun is provided with an adjuster, the adjuster comprises an ejector block in threaded connection with the spray gun, and two ends of the spring are respectively abutted against the ejector rod and the ejector block, so that the tightness of the spring can be conveniently adjusted or the spring can be conveniently replaced.
Furthermore, a stop pin is further arranged in the spray gun, the stop pin is positioned on one side, deviating from the punching needle, of the plug pin in the axial direction, and the stop pin is used for replacing a spring to clear up the inertia force of the plug pin, so that the plug pin can have higher frequency.
Furthermore, the stop pin is in threaded connection with the spray gun, so that the movable space of the plug pin can be conveniently adjusted.
Furthermore, the spray gun is fixed on a valve body, and the electromagnetic coil is installed on the valve body.
Furthermore, a liquid inlet passage communicated with the liquid cavity is arranged on the valve body.
Furthermore, the punching needle is blocked up the one end of the inner side of the nozzle is a round head, so that the punching needle can conveniently extrude liquid well when impacting the nozzle.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a cross-sectional view of the present invention.
In the figure: 11. a liquid chamber; 2. a nozzle; 3. a valve body; 31. a liquid inlet passage; 4. an electromagnetic coil; 5. punching a needle; 51. a bolt; 6. a top rod; 61. a spring; 62. a regulator; 7. and (4) a stop pin.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 and 2, in the present embodiment, a nozzle 2 is installed at one end of the spray gun, a liquid chamber 11 is disposed inside the spray gun, and liquid is filled in the liquid chamber 11 and is sprayed out from the nozzle 2 after a certain pressure is applied; traditional spray gun can form punctiform liquid drop, evenly spray in order to guarantee spun liquid, generally need connect the air pump, through compressed air and liquid mixing, from 2 punctiform blowout of nozzle with liquid through atmospheric pressure, such mode makes the spray gun need connect air outlet means such as air pump, and the pipeline on the spray gun is many, and the structure is complicated, and the preparation work in the use is loaded down with trivial details, operates inconveniently.
In the embodiment, a compressed air suction mode is not adopted, but a common thimble structure for blocking the opening of the nozzle 2 in the spray gun is improved into the punch needle 5 in the embodiment, the head of the punch needle 5 is abutted against a liquid channel of the nozzle 2, and when the spray gun is not used, the punch needle 5 blocks the nozzle 2, so that liquid in the liquid cavity 11 does not leak in a static state; when the liquid jet nozzle is used, liquid is poured into the liquid cavity 11 at a certain pressure, at this time, the punch needle 5 is driven to reciprocate axially, so that the head of the punch needle 5 repeatedly impacts the inner side of the nozzle 2, and under a certain impact strength, the liquid at the liquid channel of the nozzle 2 is quickly extruded and flushed out under impact, so that point-shaped liquid drops are formed at the nozzle 2 to be jetted out, and the jetting effect at the nozzle 2 is fully continuous due to repeated high-frequency impact.
In order to ensure good spraying effect during impact, the nozzle 2 is constructed to comprise a through hole, the inner side of the nozzle 2 is a concave spherical surface, the inner end opening of the through hole is positioned in the center of the spherical surface, the thimble is used for blocking the end part of the nozzle 2 to be a round head matched with the spherical surface, during impact, the round head extrudes liquid at the spherical surface into the through hole, the liquid rapidly passes through the through hole with small size under such rapid impact and is subjected to great pressure, and therefore when the liquid is extruded from the through hole under the pressure, the liquid is scattered into a point shape by releasing the pressure; the mode has good adaptability to liquid with different viscosities, and the spraying effect can be realized by adding proper impact force to liquid with large viscosity, so that the adaptability is strong.
In order to drive the reciprocating motion of the punch needle 5, in this embodiment, a form of a return structure is adopted in cooperation with the electromagnetic coil 4 to generate a back-and-forth driving force for the punch needle 5, specifically, the electromagnetic coil 4 is arranged to surround the spray gun, at this time, the head end of the punch needle 5 is abutted to the nozzle 2, the tail end of the punch needle 5 is fixedly connected with a plug pin 51, the plug pin 51 can be attracted by magnetic force, the plug pin 51 is slidably sleeved in the spray gun, the position of the plug pin 51 is just close to the center of the electromagnetic coil 4 in the axial direction but not exceeding the center, when the electromagnetic coil 4 is powered on, an axial traction force for the plug pin 51 is generated, so as to drive the head end of the punch needle 5 to be disengaged from the nozzle 2, and after the electromagnetic coil 4 is powered off, the traction force disappears.
After the traction force disappears, the bolt 51 and the punching needle 5 are reset through a reset structure, and the reset force provided by the reset structure to the punching needle 5 enables the punching needle 5 to impact the nozzle 2, so that the spraying effect is realized; specifically, the reset structure is a push rod 6 which axially abuts against the bolt 51, the push rod 6 is movably sleeved in the spray gun, one end of the push rod 6 abuts against the bolt 51, the other end of the push rod 6 is provided with a spring 61, and the spring 61 provides an ejecting force for the push rod 6, so that the push rod 6 can eject the bolt 51.
Correspondingly, the ejection force of the ejector pin 6 on the plug pin 51 is determined by the elastic force and the tensile force of the spring 61, so that the impact force of the punch pin 5 on the nozzle 2 is directly determined, the liquid outlet speed and the ejection effect of the nozzle 2 are determined, and further, for the spring 61 in the embodiment, the model can be changed according to the required impact effect, the impact force can be changed by changing the springs 61 with different forces, or the ejection force on the punch pin 5 can be changed by adjusting the tensile effect of the spring 61, specifically, the tail of the spray gun is provided with an adjuster 62, the adjuster 62 comprises an ejector block which is connected in the tail end of the nozzle 2 in a threaded manner, two ends of the spring 61 respectively abut against the ejector pin 6 and the ejector block, and the distance between the adjuster 62 and the ejector pin 6 is changed by rotating the adjuster 62, so that the tension adjustment on the spring 61 is realized, and the force path is changed.
For the specific structure of the spray gun, in order to ensure the simplified structure, the internal liquid fluidity and the tightness, the spray gun comprises a tubular shell, the liquid cavity 11 is positioned in the shell, the nozzle 2 is arranged at one axial end of the shell, the regulator 62 is arranged at the other axial end of the shell, the punch needle 5, the plug pin 51, the ejector rod 6, the spring 61 and the like are all arranged in the shell, in order to install the electromagnetic coil 4, the spray gun is arranged on the valve body 3, and the electromagnetic coil 4 is arranged on the shell in a surrounding manner and is fixed on the valve body 3, so as to realize the supporting and fixing effects.
Preferably, a handle, a switch, a circuit wiring, a liquid pipeline and the like for controlling the spray gun can be combined with the valve body 3, the valve body 3 is also provided with a liquid inlet channel 31 for communicating the liquid cavity 11 in the spray gun, and liquid is injected into the liquid cavity 11 through external liquid inlet equipment and certain hydraulic pressure is provided.
It should be added that, for the punch pin 5, which is subjected to the combined action of the driving force generated by the electromagnetic coil 4 and the restoring force generated by the spring 61 in operation, the driving force generated by the on/off of the electromagnetic coil 4 is instantaneous, the driving effect is fast and violent, but the elastic member of the spring 61 has inertia effect and time delay property, so when the electromagnetic coil 4 starts to drive the latch 51 to act, the force drives the spring 61 to compress, and when the electromagnetic coil 4 is off, the latch 51 still has inertia to compress the spring 61, and the spring 61 needs to counteract the inertia and then reversely push the spring to restore.
Under the effect, firstly, the action stroke of the punch pin 5 is relatively large, a larger internal space is needed, and furthermore, when strong impact force is needed, a larger electromagnetic driving force is needed, the inertia of the bolt 51 is increased due to the large electromagnetic driving force, and further, the time required by the spring 61 to counteract the inertia is also increased, so that the time required by the punch pin 5 to complete one stroke is increased.
Therefore, in order to solve the above mentioned problems, in this embodiment, a stop pin 7 is additionally arranged in the housing, the stop pin 7 is located on a side of the plug pin 51 facing away from the punch pin 5 in the axial direction, the stop pin 7 is hollow so as to facilitate the push rod 6 to pass through to facilitate the push rod 6 to abut against the plug pin 51, by presetting a distance between the stop pin 7 and the plug pin 51 in a natural state, when the electromagnetic coil 4 is switched on, the plug pin 51 directly impacts against the stop pin 7 after moving through the distance, and then the spring 61 is replaced to perform resolution of inertia force, so that the plug pin 51 can be directly stopped, and after the electromagnetic coil 4 is switched off, the spring 61 can directly and instantly drive the plug pin 51 to reset, and thus a high impact frequency can be completely achieved under the condition of ensuring a high impact force.
And the stop pin 7 can be connected in the shell through threads, and a user can rotate the stop pin 7 to adjust the distance between the stop pin 7 and the bolt 51 so as to adapt to working requirements.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. A fine-tuning electromagnetic spray gun comprises a liquid cavity (11) for containing liquid and a nozzle (2) arranged on the spray gun, and is characterized in that a movable punching needle (5) is arranged in the liquid cavity (11), and one end of the punching needle (5) is plugged with the nozzle (2) in a natural state; the spray gun is provided with an electromagnetic coil (4) for driving the punching needle (5) to axially break away from the nozzle (2), the spray gun is also internally provided with a reset structure for driving the punching needle (5) to return to a natural state, and the electromagnetic coil (4) and the reset structure are combined to drive the punching needle (5) to axially reciprocate.
2. The fine-tuning electromagnetic spray gun according to claim 1, characterized in that the electromagnetic coil (4) circumferentially surrounds the middle of the spray gun, the tail end of the punch pin (5) is connected with a plug pin (51) for acting and responding to the electromagnetic coil (4), and the plug pin (51) is movably sleeved in the spray gun.
3. The fine-tuning electromagnetic spray gun according to claim 2, wherein the reset structure comprises a push rod (6) movably sleeved in the spray gun, one end of the push rod (6) is abutted against the bolt (51), the other end of the push rod is connected with a spring (61), and the spring (61) provides thrust to the push rod (6) along the axial direction towards one side of the bolt (51).
4. The fine tuning electromagnetic spray gun according to claim 3, characterized in that the tail end of the spray gun is provided with an adjuster (62), the adjuster comprises a top block in threaded connection with the spray gun, and two ends of the spring (61) respectively abut against the top rod (6) and the top block.
5. A vernier electromagnetic spray gun according to claim 2, wherein a stop pin (7) is further provided in the spray gun, and the stop pin (7) is located on a side of the plug pin (51) facing away from the punch pin (5) in the axial direction.
6. A vernier electromagnetic spray gun according to claim 5, wherein said stop pin (7) is screwed to said spray gun.
7. A vernier electromagnetic spray gun as claimed in claim 1, wherein said spray gun is fixed to a valve body (3) and said electromagnetic coil (4) is mounted to said valve body (3).
8. The fine-tuning electromagnetic spray gun according to claim 7, characterized in that the valve body (3) is provided with a liquid inlet passage (31) communicating with the liquid chamber (11).
9. A vernier electromagnetic spray gun according to claim 1, wherein the end of the punch pin (5) blocking the inside of the nozzle (2) is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210956883.8A CN115155833B (en) | 2022-08-10 | 2022-08-10 | Fine tuning type electromagnetic spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210956883.8A CN115155833B (en) | 2022-08-10 | 2022-08-10 | Fine tuning type electromagnetic spray gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115155833A true CN115155833A (en) | 2022-10-11 |
| CN115155833B CN115155833B (en) | 2024-01-16 |
Family
ID=83479441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210956883.8A Active CN115155833B (en) | 2022-08-10 | 2022-08-10 | Fine tuning type electromagnetic spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115155833B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB764166A (en) * | 1955-02-22 | 1956-12-19 | Wagner Josef | Spray gun for atomizing liquids |
| US20010019085A1 (en) * | 1999-12-07 | 2001-09-06 | Masahiro Okajima | Fuel injection apparatus |
| US20020005004A1 (en) * | 2000-07-14 | 2002-01-17 | Giuseppe Pescini | Semiautomatic rifle with inertial operation |
| CN1523221A (en) * | 2003-09-08 | 2004-08-25 | 剑 金 | Fuel injector for bearing heavy load |
| CN102451805A (en) * | 2010-10-29 | 2012-05-16 | 上海佳田药用包装有限公司 | Inner spray method and device for medical packing aluminum tube |
| CN102941183A (en) * | 2012-11-28 | 2013-02-27 | 中南大学 | Electromagnetic drive adhesive dispensing valve comprising flexible amplification arm |
| CN203315501U (en) * | 2013-05-31 | 2013-12-04 | 北京谊安医疗系统股份有限公司 | One-way valve for respirators and respirator comprising one-way valve |
| CN103742383A (en) * | 2014-01-23 | 2014-04-23 | 苏州派格丽减排系统有限公司 | Energy storage type supercharged electromagnetic plunger pump and measuring and injecting system used for SCR (Silicon Controlled Rectifier) emission reduction system |
| CN107096657A (en) * | 2017-06-23 | 2017-08-29 | 迈德乐喷雾系统广州有限公司 | A kind of electronics spray gun |
-
2022
- 2022-08-10 CN CN202210956883.8A patent/CN115155833B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB764166A (en) * | 1955-02-22 | 1956-12-19 | Wagner Josef | Spray gun for atomizing liquids |
| US20010019085A1 (en) * | 1999-12-07 | 2001-09-06 | Masahiro Okajima | Fuel injection apparatus |
| US20020005004A1 (en) * | 2000-07-14 | 2002-01-17 | Giuseppe Pescini | Semiautomatic rifle with inertial operation |
| CN1523221A (en) * | 2003-09-08 | 2004-08-25 | 剑 金 | Fuel injector for bearing heavy load |
| CN102451805A (en) * | 2010-10-29 | 2012-05-16 | 上海佳田药用包装有限公司 | Inner spray method and device for medical packing aluminum tube |
| CN102941183A (en) * | 2012-11-28 | 2013-02-27 | 中南大学 | Electromagnetic drive adhesive dispensing valve comprising flexible amplification arm |
| CN203315501U (en) * | 2013-05-31 | 2013-12-04 | 北京谊安医疗系统股份有限公司 | One-way valve for respirators and respirator comprising one-way valve |
| CN103742383A (en) * | 2014-01-23 | 2014-04-23 | 苏州派格丽减排系统有限公司 | Energy storage type supercharged electromagnetic plunger pump and measuring and injecting system used for SCR (Silicon Controlled Rectifier) emission reduction system |
| CN107096657A (en) * | 2017-06-23 | 2017-08-29 | 迈德乐喷雾系统广州有限公司 | A kind of electronics spray gun |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115155833B (en) | 2024-01-16 |
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