CN113289786A - Asymmetric spraying part of fog gun machine - Google Patents
Asymmetric spraying part of fog gun machine Download PDFInfo
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- CN113289786A CN113289786A CN202110537686.8A CN202110537686A CN113289786A CN 113289786 A CN113289786 A CN 113289786A CN 202110537686 A CN202110537686 A CN 202110537686A CN 113289786 A CN113289786 A CN 113289786A
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- pipe section
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- fog gun
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/0075—Nozzle arrangements in gas streams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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Abstract
The invention discloses an asymmetric spraying component of a fog gun machine, which comprises a water inlet pipe, an annular pipe and nozzles, wherein the water inlet pipe is communicated with the annular pipe, and a plurality of nozzles are respectively arranged on the annular pipe; when the annular pipe is in a standing state, a horizontal plane passing through the midpoint of the annular pipe in the height direction is set as an upper and lower separation surface, a part of the annular pipe positioned above the upper and lower separation surfaces is set as an upper pipe section, a part of the annular pipe positioned below the upper and lower separation surfaces is set as a lower pipe section, and the sum of the flow rates of the nozzles mounted on the upper pipe section is greater than the sum of the flow rates of the nozzles mounted on the lower pipe section. The invention aims to solve the technical problems that the range of a fog gun machine is smaller than the label value of a nameplate and the surface water near a jet orifice is more in the spraying part in the prior art.
Description
Technical Field
The invention belongs to the technical field of spraying equipment, and particularly relates to an asymmetric spraying part of a fog gun machine.
Background
The fog gun machine is widely applied in the fields of dust suppression and dust fall, fire extinguishing and cooling, agricultural spraying and the like, the technology of combining pressure atomization and wind atomization is adopted, high-speed airflow from an axial flow fan is used as a carrier, the airflow reaches a jet orifice through a jet cylinder, fog drops sprayed out of a hydraulic nozzle are further crushed and secondarily atomized, and then smaller fog drops are conveyed to a spraying target, so that the double functions of refining the fog drops and conveying the fog drops are achieved.
In the prior art, the spraying part of the fog gun machine comprises a water inlet pipe, a ring pipe and a plurality of nozzles, wherein the number of the nozzles is multiple, and the types of the nozzles are the same. The nozzles with the same type are uniformly distributed on the annular pipe, and pressurized water pressurized by the water pump is sprayed out from the nozzles to form fog drops after passing through the water inlet pipe and the annular pipe in sequence.
The technical problems that the range of the fog gun machine adopting the structure is smaller than the mark value of a nameplate and the ground water near the jet orifice is more exist, and the use requirement of the equipment is difficult to meet.
Disclosure of Invention
Technical problem to be solved
Based on the technical scheme, the invention provides an asymmetric spraying part of a fog gun machine, and aims to solve the technical problems that the range of the fog gun machine is smaller than the nameplate mark value and the ground water near a spraying opening is more in the spraying part in the prior art.
(II) technical scheme
In order to solve the technical problem, the invention provides an asymmetric spraying component of a fog gun machine, which comprises a water inlet pipe, an annular pipe and a plurality of nozzles, wherein the water inlet pipe is communicated with the annular pipe; when the annular pipe is in a standing state, a horizontal plane passing through the midpoint of the annular pipe in the height direction is set as an upper and lower separation surface, a part of the annular pipe positioned above the upper and lower separation surfaces is set as an upper pipe section, a part of the annular pipe positioned below the upper and lower separation surfaces is set as a lower pipe section, and the sum of the flow rates of the nozzles mounted on the upper pipe section is greater than the sum of the flow rates of the nozzles mounted on the lower pipe section.
Preferably, the inner bore cross-sectional area of the upper pipe section of the annular pipe is larger than the inner bore cross-sectional area of the lower pipe section.
Preferably, the circumferential intervals between adjacent nozzles are the same, the flow rate of each nozzle installed on the upper pipe section is the same, the flow rate of each nozzle installed on the lower pipe section is the same, and the flow rate of a single nozzle installed on the upper pipe section is greater than that of a single nozzle installed on the lower pipe section.
Preferably, the flow rate of each nozzle is the same, the circumferential distance between adjacent nozzles mounted on the upper pipe section is B, the circumferential distance between adjacent nozzles mounted on the lower pipe section is a, and a > B.
Preferably, the flow rate of each nozzle is the same, and the number of nozzles installed in the upper pipe section is greater than that of nozzles installed in the lower pipe section.
Preferably, the circumferential intervals between adjacent nozzles are the same, the cross-sectional area of the inner hole of the upper pipe section is larger than that of the inner hole of the lower pipe section, the flow rate of each nozzle installed on the upper pipe section is the same, the flow rate of each nozzle installed on the lower pipe section is the same, and the flow rate of a single nozzle installed on the upper pipe section is larger than that of a single nozzle installed on the lower pipe section.
Preferably, the circumferential intervals between adjacent nozzles are the same, and the flow rate of the nozzles gradually decreases in a gradient manner along the direction from the top to the bottom of the annular pipe.
Preferably, the flow rate of each nozzle is the same, and the circumferential distance between adjacent nozzles gradually increases in a gradient manner along the direction from the top to the bottom of the annular pipe.
Preferably, the flow rate of the nozzles gradually decreases in a gradient manner along the direction from the top to the bottom of the annular pipe, and the circumferential distance between the adjacent nozzles gradually increases in a gradient manner.
Preferably, a vertical plane passing through a midpoint in the width direction of the annular tube is defined as a left and right partition surface, and the plurality of nozzles are symmetrically arranged on both sides of the left and right partition surfaces.
(III) advantageous effects
Compared with the prior art, the asymmetric spraying part of the fog gun machine has the beneficial effects that:
the fog gun adopting the asymmetric spraying component has a longer range, less water accumulation on the ground near the spraying opening and less water consumption.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a schematic view of the overall structure of an asymmetric spray part of a fog gun machine according to embodiment 1 of the present invention;
fig. 2 is a schematic view of the overall structure of an asymmetric spraying part of a fog gun machine according to embodiment 2 of the invention;
fig. 3 is a schematic view of the overall structure of an asymmetric spraying part of a fog gun machine according to embodiment 3 of the invention;
fig. 4 is a schematic view of the overall structure of an asymmetric spraying part of a fog gun machine according to embodiment 4 of the present invention.
Description of reference numerals:
1. the water inlet pipe comprises a water inlet pipe body, 2 annular pipes, 21 upper pipe sections, 22 lower pipe sections, 3 spray nozzles, 4 upper and lower separation surfaces and 5 left and right separation surfaces.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention will be further described with reference to the accompanying figures 1-4. An asymmetric spraying component of a fog gun machine comprises a water inlet pipe 1, an annular pipe 2 and a plurality of nozzles 3, wherein the water inlet pipe 1 is communicated with the annular pipe 2, the number of the nozzles 3 is multiple, and the nozzles 3 are respectively arranged on the annular pipe 2; when the ring pipe 2 is in a standing state, a horizontal plane passing through a midpoint in the height direction of the ring pipe 2 is defined as an upper and lower partition surface 4, a portion of the ring pipe 2 located above the upper and lower partition surfaces 4 is defined as an upper pipe section 21, a portion of the ring pipe 2 located below the upper and lower partition surfaces 4 is defined as a lower pipe section 22, and the sum of the flow rates of the nozzles 3 attached to the upper pipe section 21 is larger than the sum of the flow rates of the nozzles 3 attached to the lower pipe section 22.
The inventive principles of the present invention are explained in detail below. When an asymmetric spraying part of a fog gun machine is developed, the inventor researches and tests to find that:
(1) when the annular pipe 2 is in a standing state, a horizontal plane passing through the midpoint of the annular pipe 2 in the height direction is set as an upper and lower separation plane 4, a part of the annular pipe above the upper and lower separation planes 4 is set as an upper pipe section 21, a part of the annular pipe below the upper and lower separation planes 4 is set as a lower pipe section 22, droplet particles sprayed by the nozzles 3 arranged on the upper pipe section 21 of the annular pipe 2 are positioned on the upper part of the outline of a fog gun machine droplet particle track tracing diagram, the moving distance of the droplet particles sprayed by the nozzles 3 on the lower pipe section 22 of the annular pipe 2 is longer overall, and under the condition that the sum of the spray flow rates of all the nozzles 3 on the annular pipe 2 is unchanged, the sum of the spray flow rates of all the nozzles 3 on the upper pipe section 21 of the annular pipe 2 is larger than the sum of the spray flow rates of all the nozzles 3 on the lower pipe section 22 of the annular pipe 2, which is beneficial to increasing the range of the fog gun machine.
(2) In the action range of airflow at the outlet of the fog gun machine, fog drops are simultaneously acted by gravity and airflow thrust, and settle under the action of gravity, and in the same plane spray amplitude perpendicular to the range direction, the fog drops from the upper separation surface 4 and the lower separation surface 4 have larger vertical displacement in the action range of airflow at the outlet of the fan in the process of settling from top to bottom, the time for the fog drops to be subjected to shearing and disturbance action of the airflow at the outlet of the fan in the settling process is longer, the probability of the fog drops being broken by wind power and reduced is higher, and the probability of downward settling is lower; meanwhile, the spray flow of each nozzle 3 arranged on the lower pipe section 22 of the annular pipe 2 is properly reduced, so that the phenomenon that the fog drops from the upper separation surface 4 and the lower separation surface 4 collide and polymerize with each other in the sedimentation process can be effectively reduced; therefore, under the condition that the sum of the spraying flow rates of all the nozzles 3 on the annular pipe 2 is not changed, the sum of the spraying flow rates of all the nozzles 3 on the upper pipe section 21 of the annular pipe 2 is larger than the sum of the spraying flow rates of all the nozzles 3 on the lower pipe section 22 of the annular pipe 2, and the water accumulation amount on the ground near the spray opening of the fog gun machine can be effectively reduced.
Based on the above findings, the asymmetric spraying component of the fog gun machine of the invention has the advantages that the sum of the flow rates of the nozzles 3 arranged on the upper pipe section 21 is larger than the sum of the flow rates of the nozzles 3 arranged on the lower pipe section 22, and after adopting the structure, the asymmetric spraying component of the fog gun machine has the advantages that in a plane spray width perpendicular to the range direction, the probability that fog drops from the upper separation surface 4 and the lower separation surface 4 are broken by wind force and become smaller in the sedimentation process is higher; the droplet particles sprayed from each nozzle 3 of the upper pipe section 21 of the annular pipe 2 are positioned at the upper part of the outline of the fog gun droplet particle track tracing diagram, and the overall migration distance of the droplet particles sprayed from each nozzle 3 of the lower pipe section 22 is relatively long. Therefore, when the water consumption of the fog gun machine is the same, namely the sum of the spray flows of all the nozzles 3 on the annular pipe 2 is not changed, the asymmetric spray part of the fog gun machine of the invention enables the sum of the spray flows of all the nozzles 3 arranged on the upper pipe section 21 of the annular pipe 2 to be larger than the sum of the spray flows of all the nozzles 3 arranged on the lower pipe section 22. The range of the fog gun can be increased, the ground water accumulation near the jet orifice can be reduced, and the water consumption and the power consumption can be reduced.
In order to achieve the technical effect that the sum of the flow rates of the nozzles 3 arranged on the upper pipe section 21 is larger than the sum of the flow rates of the nozzles 3 arranged on the lower pipe section 22, the invention provides various structures, mainly comprising one of the following means or the combination of the following means.
(1) The inner hole sizes of the upper pipe section 21 and the lower pipe section 22 of the annular pipe 2 are changed.
(2) The flow rates of the nozzles 3 located on the upper pipe section 21 and the lower pipe section 22 are adjusted.
(3) The number of nozzles 3 located on the upper tube section 21 and the lower tube section 22 is adjusted, i.e. the circumferential spacing between adjacent nozzles 3 is adjusted.
Fig. 1-4 show four different embodiments of the asymmetric spray components of the fog gun of the present invention.
Example 1
Referring to fig. 1, an asymmetric spraying component of a fog gun machine comprises a water inlet pipe 1, an annular pipe 2 and a nozzle 3. The water inlet pipe 1 is communicated with the annular pipe 2, the nozzles 3 are multiple, and the nozzles 3 are respectively arranged on the annular pipe 2; when the ring pipe 2 is in a standing state, a horizontal plane passing through a midpoint in the height direction of the ring pipe 2 is defined as an upper and lower partition surface 4, a portion of the ring pipe 2 located above the upper and lower partition surfaces 4 is defined as an upper pipe section 21, a portion of the ring pipe 2 located below the upper and lower partition surfaces 4 is defined as a lower pipe section 22, and the sum of the flow rates of the nozzles 3 attached to the upper pipe section 21 is larger than the sum of the flow rates of the nozzles 3 attached to the lower pipe section 22. Wherein:
(1) the annular pipe 2 is a hollow circular pipe, and the inner diameter of the upper pipe section 21 is larger than that of the lower pipe section 22.
(2) The flow rates of the nozzles 3 are all the same.
(3) The circumferential distance between the adjacent nozzles 3 mounted on the upper pipe section 21 is a, and the circumferential distance between the adjacent nozzles 3 mounted on the lower pipe section 22 is a, which are equal to each other. I.e. the number of nozzles 3 mounted in the upper pipe section 21 is equal to the number of nozzles 3 mounted in the lower pipe section 22.
Example 2
Referring to fig. 2, the embodiment 2 has substantially the same structure as the embodiment 1, and has the following distinguishing features:
(1) the inner diameter of the upper tube section 21a is equal to the inner diameter of the lower tube section 22 a.
(2) The nozzles have two different flow rates. Wherein: the flow rate of each nozzle 3a1 installed in the upper pipe section 21a is the same, the flow rate of each nozzle 3a2 installed in the lower pipe section 22a is the same, and the flow rate of the single nozzle 3a1 installed in the upper pipe section 21a is greater than the flow rate of the single nozzle 3a2 installed in the lower pipe section 22 a.
Example 3
Referring to fig. 3, embodiment 3 has substantially the same structure as embodiment 1, with the difference features that:
(1) the inner diameter of the upper tube section 21b is equal to the inner diameter of the lower tube section 22 b.
(2) The circumferential spacing between adjacent nozzles 3B1 mounted on the upper tube section 21B is smaller than the circumferential spacing between adjacent nozzles 3B2 mounted on the lower tube section 22B, the circumferential spacing between adjacent nozzles 3B1 mounted on the upper tube section 21B is B, and the circumferential spacing between adjacent nozzles 3B2 mounted on the lower tube section 22B is A, A > B. That is, the number of the nozzles 3b1 installed in the upper pipe section 21b is greater than the number of the nozzles 3b2 installed in the lower pipe section 22 b.
Example 4
Referring to fig. 4, embodiment 4 has substantially the same structure as embodiment 1, with the difference features that:
(1) the inner diameter of the upper tube section 21c is equal to the inner diameter of the lower tube section 22 c.
(2) The circumferential pitch of the adjacent nozzles 3c1 mounted on the upper tube section 21c is smaller than the circumferential pitch of the adjacent nozzles 3c2 mounted on the lower tube section 22c, the circumferential pitch of the adjacent nozzles 3c1 mounted on the upper tube section 21c is B, and the circumferential pitch of the adjacent nozzles 3c2 mounted on the lower tube section 22c is A, A > B. That is, the number of the nozzles 3c1 installed in the upper pipe section 21c is greater than the number of the nozzles 3c2 installed in the lower pipe section 22 c.
(3) The nozzles have two different flow rates. Wherein: the flow rate of each nozzle 3c1 installed in the upper pipe section 21c is the same, the flow rate of each nozzle 3c2 installed in the lower pipe section 22c is the same, and the flow rate of the single nozzle 3c1 installed in the upper pipe section 21c is greater than that of the single nozzle 3c2 installed in the lower pipe section 22 c.
When the left and right partition surfaces 5 are defined, the ring pipe 2 is also in a standing state. In the above embodiment, a vertical plane passing through the midpoint in the width direction of the ring pipe 2 is defined as the left and right partition surfaces 5, and the plurality of nozzles 3 are symmetrically arranged on both sides of the left and right partition surfaces 5. The structure is beneficial to improving the left-right symmetry of the asymmetric spraying part of the fog gun machine.
It should be noted that, in addition to the structures provided in the above embodiments 1 to 4, the asymmetric spraying part of the fog gun machine according to the present invention may also have another structure capable of achieving the technical effect that the sum of the flow rates of the nozzles 3 attached to the upper pipe section 21 is larger than the sum of the flow rates of the nozzles 3 attached to the lower pipe section 22. Specifically, the method includes one of the following means or a combination of the following means.
(1) The circumferential intervals of the adjacent nozzles 3 are the same, and the flow rate of the nozzles 3 is gradually reduced in a gradient manner along the direction from the top to the bottom of the annular pipe 2.
(2) The flow rate of each nozzle 3 is the same, and the circumferential distance between every two adjacent nozzles 3 is gradually increased along the direction from the top to the bottom of the annular pipe 2.
(3) Along the direction of the top to the bottom of annular pipe 2, the flow of nozzle 3 is the gradient and reduces gradually, and along the direction of the top to the bottom of annular pipe 2, the circumference interval of adjacent nozzle 3 is the gradient and increases gradually.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. The asymmetric spraying component of the fog gun machine is characterized by comprising a water inlet pipe, an annular pipe and a plurality of nozzles, wherein the water inlet pipe is communicated with the annular pipe; when the annular pipe is in a standing state, a horizontal plane passing through the midpoint of the annular pipe in the height direction is set as an upper and lower separation surface, a part of the annular pipe positioned above the upper and lower separation surfaces is set as an upper pipe section, a part of the annular pipe positioned below the upper and lower separation surfaces is set as a lower pipe section, and the sum of the flow rates of the nozzles mounted on the upper pipe section is greater than the sum of the flow rates of the nozzles mounted on the lower pipe section.
2. The asymmetric spray component of a fog gun machine according to claim 1, characterized in that the inner bore cross-sectional area of the upper pipe section of the annular pipe is larger than the inner bore cross-sectional area of the lower pipe section.
3. The asymmetric atomizing component for a fog gun as claimed in claim 1, wherein the circumferential spacing between adjacent nozzles is the same, the flow rate of each nozzle mounted to said upper pipe section is the same, the flow rate of each nozzle mounted to said lower pipe section is the same, and the flow rate of a single nozzle mounted to said upper pipe section is greater than the flow rate of a single nozzle mounted to said lower pipe section.
4. The asymmetric atomizing component for a fog gun as claimed in claim 1, wherein the flow rate of each of said nozzles is the same, the circumferential spacing between adjacent nozzles mounted on said upper pipe section is B, and the circumferential spacing between adjacent nozzles mounted on said lower pipe section is A, A > B.
5. The asymmetric spray component of a fog gun as claimed in claim 1, wherein the flow rate of each of said nozzles is the same, and the number of said nozzles mounted to said upper pipe section is greater than the number of said nozzles mounted to said lower pipe section.
6. The asymmetric spray component of a fog gun as claimed in claim 1, wherein the circumferential spacing between adjacent nozzles is the same, the cross-sectional area of the inner bore of the upper pipe section is greater than the cross-sectional area of the inner bore of the lower pipe section, the flow rate of each nozzle mounted to the upper pipe section is the same, the flow rate of each nozzle mounted to the lower pipe section is the same, and the flow rate of a single nozzle mounted to the upper pipe section is greater than the flow rate of a single nozzle mounted to the lower pipe section.
7. The asymmetric spray component of a fog gun as claimed in claim 1, wherein the circumferential spacing between adjacent nozzles is the same, and the flow rate of the nozzles decreases in a gradient from the top to the bottom of the annular tube.
8. The asymmetric spray component of a fog gun as claimed in claim 1, wherein the flow rate of each nozzle is the same, and the circumferential spacing between adjacent nozzles increases in a gradient from the top to the bottom of the annular tube.
9. The asymmetric spray component of a fog gun as claimed in claim 1, wherein the flow rate of said nozzles is gradually reduced and the circumferential spacing between adjacent nozzles is gradually increased in a top-to-bottom direction of said annular tube.
10. The asymmetric spray unit of a fog gun as claimed in any one of claims 1-9, characterized in that a vertical plane passing through the midpoint in the width direction of the annular tube is set as a left-right partition plane, and the plurality of nozzles are symmetrically arranged on both sides of the left-right partition plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110537686.8A CN113289786B (en) | 2021-05-18 | 2021-05-18 | Asymmetric spraying part of fog gun machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110537686.8A CN113289786B (en) | 2021-05-18 | 2021-05-18 | Asymmetric spraying part of fog gun machine |
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| Publication Number | Publication Date |
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| CN113289786A true CN113289786A (en) | 2021-08-24 |
| CN113289786B CN113289786B (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110537686.8A Active CN113289786B (en) | 2021-05-18 | 2021-05-18 | Asymmetric spraying part of fog gun machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253212A (en) * | 1925-03-14 | 1926-06-14 | Walter Joseph Goodwin | Improvements in or relating to spraying apparatus |
| CN103816754A (en) * | 2014-03-04 | 2014-05-28 | 湖南九九矿安装备有限公司 | Efficient energy-saving air-assisted spray dust remover |
| CN204412452U (en) * | 2014-06-12 | 2015-06-24 | 秦皇岛云立方环保工程有限公司 | The charged fog gun that a kind of effective elimination city raised dust and haze pollute |
| CN207126693U (en) * | 2017-09-07 | 2018-03-23 | 广东科华环境设备有限公司 | A kind of special Crossed Circle shower nozzle of fog gun |
| CN112212437A (en) * | 2018-01-17 | 2021-01-12 | 蓝箭航天空间科技股份有限公司 | Automatic spraying system for industrial production |
-
2021
- 2021-05-18 CN CN202110537686.8A patent/CN113289786B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253212A (en) * | 1925-03-14 | 1926-06-14 | Walter Joseph Goodwin | Improvements in or relating to spraying apparatus |
| CN103816754A (en) * | 2014-03-04 | 2014-05-28 | 湖南九九矿安装备有限公司 | Efficient energy-saving air-assisted spray dust remover |
| CN204412452U (en) * | 2014-06-12 | 2015-06-24 | 秦皇岛云立方环保工程有限公司 | The charged fog gun that a kind of effective elimination city raised dust and haze pollute |
| CN207126693U (en) * | 2017-09-07 | 2018-03-23 | 广东科华环境设备有限公司 | A kind of special Crossed Circle shower nozzle of fog gun |
| CN112212437A (en) * | 2018-01-17 | 2021-01-12 | 蓝箭航天空间科技股份有限公司 | Automatic spraying system for industrial production |
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| CN113289786B (en) | 2022-09-16 |
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