CN111266207A - Novel spray gun nozzle - Google Patents
Novel spray gun nozzle Download PDFInfo
- Publication number
- CN111266207A CN111266207A CN202010128607.3A CN202010128607A CN111266207A CN 111266207 A CN111266207 A CN 111266207A CN 202010128607 A CN202010128607 A CN 202010128607A CN 111266207 A CN111266207 A CN 111266207A
- Authority
- CN
- China
- Prior art keywords
- spray gun
- annular
- pipe
- nozzle
- spray
- 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.)
- Pending
Links
- 239000007921 spray Substances 0.000 title claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 2
- 239000003570 air Substances 0.000 abstract description 47
- 238000005507 spraying Methods 0.000 abstract description 20
- 239000003973 paint Substances 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000012080 ambient air Substances 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000003068 static effect Effects 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
-
- 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
- B05B7/02—Spray pistols; Apparatus for discharge
Abstract
The invention discloses a novel spray gun nozzle. Because the problems of paint escape and uneven spraying of the traditional spray gun can occur in the spraying process, the invention improves the structure of the traditional spray gun, and the annular air curtain spray pipe is additionally arranged on the air cap of the spray gun to form annular spray which is used as protective air flow, so that the central spray can be prevented from sucking ambient air, and the radial velocity distribution of the spray gun is ensured to be even. Compared with the more traditional spray gun of present use, the structural change of novel spray gun is little, and it is not many to improve the part that needs add, and the technology processing realizes easily, has solved because the paint vehicle that the paint vehicle escape produced is extravagant, harm staff scheduling problem, promotes the efficiency of the work of spraying paint.
Description
Technical Field
The invention belongs to the technical field of fluid, relates to a complex jet technology of mutual influence of central jet and annular jet, and particularly relates to a novel spray gun nozzle.
Background
The compressed air atomizes the coating into fine paint drops, and the paint drops are sprayed on the surface of the coated object under the drive of the air flow. The air spraying has no more requirements on the coating or the coated object, the spraying equipment is simple and flexible to operate, the spraying shape and amplitude can be adjusted randomly according to the shape and the size of a workpiece, the spraying mode is the widest applicable occasion, the particle size of the paint mist sprayed by the air spray gun is small, and the paint film quality is smooth, fine and attractive, so that the air spray gun is a coating technology which is widely applied at present and is usually used for spraying the finish paint to obtain a higher decorative effect.
The spraying amount of the spray gun at one time is small, periodic wavy spray can be generated in the spraying operation, the spraying flow field belongs to a high-speed jet flow field, the outlet of the spray nozzle can generate high speed, and the high speed can exchange a large amount of momentum with the surrounding relatively static air in the spraying process to generate high speed attenuation. Therefore, some paint mist particles will diffuse into the surrounding air to pollute the workshop due to low speed in the spraying process and can not reach the surface of the object to be sprayed. Can produce reverse speed to perpendicular, when taking the object surface spraying of angle or radian simultaneously, appear the reverse whirl field that returns of blanket formula promptly, also can take away the coating cloud granule of a large amount of small particle diameters this moment, the utilization ratio is below 40%, and a large amount of poisonous coating cloud granules and volatile organic solvent all cause very big harm to the environment of the healthy and workshop that sprays paint of spray painter in diffusing to the ambient air.
Therefore, improvements in spray guns, reducing escape, increasing paint utilization, reducing paint consumption costs, and improving environmental and health concerns are all important. Most spray guns used in China, especially spraying equipment in industries such as the automobile industry, depend on imports, and the core technical mastery is deficient in the experimental and theoretical researches in the aspect of China in some internationally known spray gun brands such as Sata in Germany, Anest Iwata in Japan and Graco in America. Therefore, research on the spraying mechanism and the spraying flow field characteristics of the spray gun is necessary for improving the spraying efficiency of the spray gun subsequently.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the traditional air spray gun technology, and provides a novel spray gun nozzle, so that the problem of escape in the paint spraying process is solved, and the environment of a paint spraying workshop is greatly improved.
In order to realize the purpose of the invention, the invention is realized by the technical scheme consisting of the following technical measures:
a novel spray gun nozzle comprises a gun body, a gun handle, a central nozzle air inlet, a blast cap, a central nozzle, an annular spray pipe and an air inlet pipe. The central nozzle air inlet is connected with the inner cavity of the gun body through the gun handle; the blast cap is connected with the central nozzle, and is characterized in that the annular nozzle comprises a first pipe body with a large pipe diameter, a second pipe body with a small pipe diameter, an annular bottom surface and annular nozzle gas inlets, the first pipe body and the second pipe body are connected through the annular bottom surface, and the annular nozzle gas inlets are uniformly distributed on the annular bottom surface; the annular spray pipe air inlet is connected with the air inlet device through an air inlet pipe, and the annular spray pipe is connected to the blast cap.
As a further improvement of the invention, the annular nozzle air inlet and the air inlet pipe are connected through a sealing gasket.
As a further improvement of the invention, the inner wall of the second pipe body and the blast cap are provided with threads, and the annular nozzle and the blast cap are connected through the threads.
As a further improvement of the invention, the number of the annular nozzle air inlets is n, n is more than or equal to 2, and the n air inlets can ensure uniform air inlet.
The invention has the advantages that when the central nozzle sprays the coating, the annular air curtain is started, the air inlet sucks air from the air inlet device through the air inlet pipe, the air enters the hollow pipe between the first pipe body and the second pipe body and is sprayed out of the hollow pipe to reach the working surface, and a tight annular protective airflow is formed around the central nozzle to prevent momentum exchange between the central jet flow and the ambient air, so that the radial velocity distribution of the central jet flow is uniform, the problems of escape and environmental pollution are reduced, and the utilization rate of the coating is improved.
Drawings
FIG. 1 is a schematic view of the inventive structure;
fig. 2 is a schematic structural view of the annular nozzle.
Reference numerals: the device comprises a central nozzle 1, a blast cap 2, an annular spray pipe 3, a central nozzle air inlet 4, an air inlet pipe 5, a coating tank 6, a gun handle 7 and a gun body 8;
the device comprises a first pipe body 3-1, a second pipe body 3-2 with a small pipe diameter, an annular bottom surface 3-3 and an annular spray pipe air inlet 3-4.
Detailed Description
The patent is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-2, the present invention comprises a central nozzle air inlet 4 connected to the interior cavity of a gun body 8 through a gun stock 7; the blast cap 2 is connected with the central nozzle 1, the annular nozzle 3 comprises a first pipe body 3-1 with a large pipe diameter, a second pipe body 3-2 with a small pipe diameter, an annular bottom surface 3-3 and annular nozzle air inlets 3-4, the first pipe body 3-1 and the second pipe body 3-2 are connected through the annular bottom surface 3-3, and the annular nozzle air inlets 3-4 are uniformly distributed on the annular bottom surface; the annular nozzle air inlet 3-4 is connected with an air inlet device through an air inlet pipe 5, and the annular nozzle 3 is connected to the blast cap 2.
In the invention, when the air spray gun works, the coating is sprayed out from the gun body 8 through the central nozzle 1 to form a main jet flow, namely a central jet flow, the speed of the central jet flow is about 60m/s, and the working pressure is 2～4atm, corresponding to a flow rate of about 96L/Min. The diameter of a first pipe body 3-1 of the annular spray pipe 3 is 36mm, the diameter of a second pipe body 3-2 is 35mm, the annular spray pipe and the central nozzle 1 work simultaneously to form annular jet flow with the outflow speed of 60m/s, the annular jet flow is sprayed out of the hollow pipe to reach an operation surface, tight annular protective airflow is formed around the central nozzle 1, momentum exchange between the central jet flow and surrounding air is prevented, the radial speed distribution of the central jet flow is uniform, the problems of escape and environmental pollution are reduced, and the utilization rate of the coating is improved.
As a further improvement of the invention, the inner wall of the second pipe body 3-2 and the blast cap 2 are provided with threads, and the annular nozzle 3 is connected with the blast cap 2 through the threads.
The core of this patent is the installation of the annular nozzle 3 on the cowl 2 of a conventional air lance, while the screw thread is the key to connect the annular nozzle 3 and the cowl 2.
As a further improvement of the invention, the inner wall of the annular nozzle air inlet 3-4 and the outer wall of the air inlet pipe 5 are provided with threads, and the annular nozzle air inlet 3-4 is connected with the air inlet pipe 5 through the threads.
As a further improvement of the invention, the number of the annular nozzle air inlets 3-4 is n, and the annular nozzle air inlets are uniformly arranged on the annular bottom surface of the annular nozzle 3-3, so that the air is sucked more uniformly.
Claims (3)
1. A novel spray gun nozzle comprises a nozzle cap and is characterized in that an annular spray pipe is mounted on the nozzle cap and comprises a first pipe body with a large pipe diameter, a second pipe body with a small pipe diameter, an annular bottom surface and an annular spray pipe air inlet, the first pipe body and the second pipe body are connected through the annular bottom surface, and the annular spray pipe air inlet is uniformly distributed on the annular bottom surface; and the air inlet of the annular spray pipe is connected with an air inlet device through an air inlet pipe.
2. The spray gun nozzle as claimed in claim 1, wherein the annular nozzle and the hood are threaded. The annular spray pipe air inlet and the air inlet pipe are connected through a sealing gasket.
3. The novel spray gun nozzle according to claim 1, wherein the number of annular nozzle inlets is n, and n is greater than or equal to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010128607.3A CN111266207A (en) | 2020-02-28 | 2020-02-28 | Novel spray gun nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010128607.3A CN111266207A (en) | 2020-02-28 | 2020-02-28 | Novel spray gun nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111266207A true CN111266207A (en) | 2020-06-12 |
Family
ID=70992352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010128607.3A Pending CN111266207A (en) | 2020-02-28 | 2020-02-28 | Novel spray gun nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111266207A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021169398A1 (en) * | 2020-02-28 | 2021-09-02 | 天津大学 | New spray gun nozzle |
| CN113769934A (en) * | 2021-10-26 | 2021-12-10 | 湖南正业科技有限公司 | Production equipment for environment-friendly low-pollution motorcycle accessories |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1011037A (en) * | 1948-11-25 | 1952-06-18 | Improvements to paint guns, sandblasting nozzles or others | |
| AT186841B (en) * | 1953-06-19 | 1956-09-25 | Hans Bode Kommanditgesellschaf | Spray gun for granular, e.g. B. cement or lime containing, viscous plaster masses |
| CN102458676A (en) * | 2009-06-25 | 2012-05-16 | 纳幕尔杜邦公司 | Spray device and use thereof |
| CN204816972U (en) * | 2015-06-30 | 2015-12-02 | 上海宝尚低碳建筑科技有限公司 | Insulating blackwash sprayer |
| KR20160098808A (en) * | 2015-02-11 | 2016-08-19 | 이노비스 주식회사 | A Nozzle Assembly Forming a Structure of an Air Curtain |
| CN212550085U (en) * | 2020-02-28 | 2021-02-19 | 天津大学 | Novel spray gun nozzle |
-
2020
- 2020-02-28 CN CN202010128607.3A patent/CN111266207A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1011037A (en) * | 1948-11-25 | 1952-06-18 | Improvements to paint guns, sandblasting nozzles or others | |
| AT186841B (en) * | 1953-06-19 | 1956-09-25 | Hans Bode Kommanditgesellschaf | Spray gun for granular, e.g. B. cement or lime containing, viscous plaster masses |
| CN102458676A (en) * | 2009-06-25 | 2012-05-16 | 纳幕尔杜邦公司 | Spray device and use thereof |
| KR20160098808A (en) * | 2015-02-11 | 2016-08-19 | 이노비스 주식회사 | A Nozzle Assembly Forming a Structure of an Air Curtain |
| CN204816972U (en) * | 2015-06-30 | 2015-12-02 | 上海宝尚低碳建筑科技有限公司 | Insulating blackwash sprayer |
| CN212550085U (en) * | 2020-02-28 | 2021-02-19 | 天津大学 | Novel spray gun nozzle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021169398A1 (en) * | 2020-02-28 | 2021-09-02 | 天津大学 | New spray gun nozzle |
| CN113769934A (en) * | 2021-10-26 | 2021-12-10 | 湖南正业科技有限公司 | Production equipment for environment-friendly low-pollution motorcycle accessories |
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