CN201809430U - Laval nozzle for arc pistol - Google Patents
Laval nozzle for arc pistol Download PDFInfo
- Publication number
- CN201809430U CN201809430U CN201020562455XU CN201020562455U CN201809430U CN 201809430 U CN201809430 U CN 201809430U CN 201020562455X U CN201020562455X U CN 201020562455XU CN 201020562455 U CN201020562455 U CN 201020562455U CN 201809430 U CN201809430 U CN 201809430U
- Authority
- CN
- China
- Prior art keywords
- laval nozzle
- passage
- path
- arc
- arc pistol
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Nozzles (AREA)
Abstract
The utility model discloses a Laval nozzle for an arc pistol, comprising a disc-like Laval nozzle body provided with a central airflow path which is divided into a contraction section path, a throat part path and an expansion section path, wherein the throat part path is a circular path or an oval path, and atomization pore sets are respectively arranged above and below the central airflow path of the Laval nozzle body. The Laval nozzle is installed on the arc pistol, can perform the compression and planation action on arc spraying atomization jet flow and can increase spraying breadth, and the thickness distribution of the arc spraying coating is evener.
Description
Technical field
The utility model relates to a kind of atomizing nozzle, especially a kind of laval nozzle that is applicable to arc pistol, and the dispersed jet element for the electric arc spraying spray gun belongs to the Surface Engineering technical field of hot.
Background technology
Atomizing nozzle is the important fluidic element of electric arc spraying spray gun, its central gas circulation road is divided into contraction section, throat and three parts of expansion segment, the electric arc spraying atomization air flow obtains greatly to improve through the gas velocity that exports after " contraction-expansion " booster action of this nozzle, its premiere feature is the power that the static pressure of atomization metal molten drop is converted to molten drop, secondly is to allow jet have good flow characteristics and kinematic behavior.Select different form of nozzle and spout geometrical shape can adapt to the requirement of different use objects, and can improve work efficiency.
As one of key part of supersonic electric arc spray gun, the laval nozzle design is the emphasis that people study always, Xiang Jianhai, people such as Suo Shuanfu have carried out improving design to the laval nozzle of supersonic electric arc spray gun, its contraction section adopts Vito Xin Siji (Witoszynski) curve, throat is by arc transition, expansion segment is designed by method of characteristic, on this basis, use commercial hydromeehanics to calculate (CFD) software FLUENT nozzle has been carried out modeling effort, novel laval nozzle flow field its top speed when operating air pressure is 0.65MPa of improving design is 591m/s, and the outer flow field of rifle has good binding character.
Existing electric arc spraying is dull, single with the laval nozzle structure, mainly considered kinematic behavior, and its flow characteristics of less consideration can not play the control synergism to the atomization air flow of metal drop.
Summary of the invention
The purpose of this utility model is the weak point that overcomes in the prior art, a kind of laval nozzle that is used for arc pistol is provided, in the upper and lower of laval nozzle structure independent pore is set, the dispersed jet that comes out from laval nozzle is played the effect of compression and fasciation, thereby make whole atomization air flow Flow Field Distribution even, increase the spraying fabric width, the spray-on coating thickness distribution is more even.
For achieving the above object, the laval nozzle that is used for arc pistol of the present utility model, comprise and have the disc type laval nozzle body that is divided into contraction section passage, throat's passage and expansion segment passage three part central gas stream passages, described throat passage is circular passage or oval-shaped passageway, the atomizing pore group that the upper and lower of the central gas stream passage of disc type laval nozzle body is respectively equipped with.
The atomizing pore group that described central gas stream passage upper and lower is provided with respectively is symmetry up and down, and its pore is distributed on the same horizontal plane; The stomatal number of described atomizing pore group is 2～4.
Beneficial effect: because throat's passage adopts circular passage or oval-shaped passageway, and atomizing pore group is set respectively at the upper and lower of central gas stream passage, be installed on the arc pistol and use, during spraying, each pore of the atomizing pore group that a main air stream part that enters laval nozzle is provided with from the nozzle upper and lower independently sprays, through actual spray test test shows, the pressurized air stream that pore independently sprays, the dispersed jet that comes out from laval nozzle is played the effect of compression and fasciation, make whole atomization air flow Flow Field Distribution even, increase the spraying fabric width, the spray-on coating thickness distribution is more even.Nozzle passage adopts the elliptic cross-section design, and is simple in structure, can increase the spraying fabric width of spray gun single track spraying, improved the operating efficiency of spray gun greatly.
Description of drawings:
Fig. 1 is the embodiment one main cross-sectional view of looking of the present utility model;
Fig. 2 is embodiment one a side-looking structural representation of the present utility model;
Fig. 3 is embodiment two side-looking structural representations of the present utility model;
Fig. 4 is embodiment three side-looking structural representations of the present utility model;
Fig. 5 is embodiment four side-looking structural representations of the present utility model.
Among the figure: the pore group of 1-top; 2-lower air holes group; The 3-circular passage; The 4-oval-shaped passageway, 5-contraction section passage, 6-throat passage, 7-expansion segment passage.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described:
Embodiment one,
Shown in Figure 2 as Fig. 1, the laval nozzle that is used for arc pistol comprises and has the disc type laval nozzle body that is divided into contraction section passage 5, throat's passage 6 and expansion segment passage 7 three part central gas stream passages, throat's passage 6 is a circular passage 3, upward atomizing pore group 1 and following atomization gas hole group 2 that the upper and lower of the central gas stream passage of disc type laval nozzle body is respectively equipped with, last atomizing pore group 1 and following atomization gas hole group 2 are symmetrically distributed up and down, its pore is distributed on the same horizontal plane, become word order, the stomatal number of atomizing pore group is 3.
Embodiment two,
As shown in Figure 3, basic identical with embodiment one structure, same section omits, and difference is: throat's passage 6 is oval-shaped passageway 4.
Embodiment three,
As shown in Figure 4, basic identical with embodiment one structure, same section omits, and difference is: the stomatal number of atomizing pore group is 2.
Embodiment four,
As shown in Figure 5, basic identical with embodiment one structure, same section omits, and difference is: the stomatal number of atomizing pore group is 4.
Claims (3)
1. laval nozzle that is used for arc pistol, comprise and have the disc type laval nozzle body that is divided into contraction section passage (5), throat's passage (6) and expansion segment passage (7) three part central gas stream passages, it is characterized in that: described throat passage (6) is circular passage (3) or oval-shaped passageway (4), the atomizing pore group that the upper and lower of the central gas stream passage of disc type laval nozzle body is respectively equipped with.
2. the laval nozzle that is used for arc pistol according to claim 1 is characterized in that: the atomizing pore group that described central gas stream passage upper and lower is provided with respectively is symmetry up and down, and its pore is distributed on the same horizontal plane.
3. the laval nozzle that is used for arc pistol according to claim 1 and 2 is characterized in that: the stomatal number of described atomizing pore group is 2～4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020562455XU CN201809430U (en) | 2010-10-14 | 2010-10-14 | Laval nozzle for arc pistol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020562455XU CN201809430U (en) | 2010-10-14 | 2010-10-14 | Laval nozzle for arc pistol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201809430U true CN201809430U (en) | 2011-04-27 |
Family
ID=43892370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020562455XU Expired - Lifetime CN201809430U (en) | 2010-10-14 | 2010-10-14 | Laval nozzle for arc pistol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201809430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069966A (en) * | 2013-03-29 | 2014-10-01 | 宁夏嘉翔自控技术有限公司 | Internal-slot layered type purging nozzle for compressed air |
| CN105228329A (en) * | 2015-10-30 | 2016-01-06 | 中国科学院力学研究所 | A kind of method and arc plasma generator disperseing the electric arc raising generator life-span |
-
2010
- 2010-10-14 CN CN201020562455XU patent/CN201809430U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069966A (en) * | 2013-03-29 | 2014-10-01 | 宁夏嘉翔自控技术有限公司 | Internal-slot layered type purging nozzle for compressed air |
| CN105228329A (en) * | 2015-10-30 | 2016-01-06 | 中国科学院力学研究所 | A kind of method and arc plasma generator disperseing the electric arc raising generator life-span |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201809430U (en) | Laval nozzle for arc pistol | |
| CN104174517A (en) | Atomization no-blind zone target type impinging stream nozzle | |
| CN202238418U (en) | Novel nozzle of electric arc spray gun | |
| CN207546863U (en) | A kind of Supersonic atomizer | |
| CN204159481U (en) | A kind of true mineral varnish/putty spray gun | |
| CN202105757U (en) | Multi-head spray gun cleaning structure | |
| CN202343358U (en) | Micro mist nozzle | |
| CN201832723U (en) | Spray nozzle for spray gun of sprayer | |
| CN203209211U (en) | Multihole solid cone-shaped nozzle | |
| CN203470209U (en) | Multilayer nozzle device for color selector | |
| CN203108052U (en) | Fire extinguisher nozzle | |
| CN206689432U (en) | A kind of aerosolization monoblock type dual-nozzle configuration | |
| CN206581112U (en) | A kind of compound Fan spray head of multiple spot spray | |
| CN109939849A (en) | Air mixed-flow high pressure nozzle | |
| CN209324348U (en) | A kind of development machine onboard foam dust collection system | |
| CN203196186U (en) | High cluster jet cannon | |
| CN203197249U (en) | High-pressure water-atomizing nozzle | |
| CN203417422U (en) | Water mist spray head with large spray range | |
| CN202968618U (en) | Cyclonic single-spray magnesium liquid iron desulphurization lance | |
| CN2827542Y (en) | Cyclone small water spray nozzle | |
| CN202356606U (en) | Release agent spraying device for deep cavity side face of die-casting mould | |
| CN204320535U (en) | Reduce the device of high-pressure fluid jet impact force | |
| CN206168601U (en) | Connect spray tube that atomizer was used | |
| CN202010581U (en) | Nozzle | |
| CN203251753U (en) | Airflow type pollination device sprayer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |