CN214383790U

CN214383790U - Special nozzle for spraying wide flat tube

Info

Publication number: CN214383790U
Application number: CN202022135443.5U
Authority: CN
Inventors: 黄早早
Original assignee: Wardstar Technology Suzhou Co ltd
Current assignee: Wardstar Technology Suzhou Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-10-12
Anticipated expiration: 2030-09-25

Abstract

The utility model belongs to the technical field of electric arc spraying and specifically relates to a special nozzle of wide flat tube spraying, it includes: nozzle body, enclosing cover and gas passage, the enclosing cover is at the nozzle body discharge side to form gas passage between enclosing cover and the nozzle body, the nozzle body includes: the casing, nozzle entry and discharging pipe, the nozzle entry has been seted up on the casing, the one side relative with the nozzle entry is the ejection of compact side and is provided with the discharging pipe, discharging pipe one end and the inside intercommunication of casing, the other end stretches out the enclosing cover behind gas passage, and the cross section of discharging pipe is two minor faces for the curved rectangle of evagination, set up the gas outlet that supplies the ejection of compact pipe to stretch out on the enclosing cover, can make spun coating compressed into wide flat shape through setting up the discharging pipe, strengthen the specificity of nozzle, newly-increased a spraying device, improve the efficiency of carrying out the spraying to wide flat pipe work piece, reduce spraying material's waste, gas passage spun gas can be by spouting to nozzle outlet spun coating all around to the centre, further atomize and flatten coating.

Description

Special nozzle for spraying wide flat tube

Technical Field

The utility model relates to an electric arc spraying field especially relates to a special nozzle of wide flat tube spraying.

Background

With the progress of society and the continuous development of industrialization, the electric arc spraying technology is more and more widely applied, namely, the electric arc spraying technology is used for enabling charged corrosion-resistant metal wires to generate electric arc combustion through a special power supply, and high-temperature liquid drops of molten metal are sprayed, atomized and sprayed to the surface of a metal component needing to be protected by compressed air in a very short time to form a spraying layer which is high in purity and strong in binding force and combines a mechanical method and a metallurgical method. The method is suitable for long-acting corrosion prevention, wear resistance, equipment repair, old part renovation, product surface strengthening and the like in the manufacturing industry, the maintenance industry and related industries, and has great economic benefit and quite wide application prospect. The electric arc spraying equipment system mainly comprises an air compressor, an air storage tank, an oil-water separator, an electric arc spraying power supply, a wire feeding mechanism and an electric arc spray gun, wherein the electric arc spray gun is main equipment for electric arc spraying, the widely used spray guns are provided with universal circular nozzles at present, when the wide flat pipes in a specific shape are sprayed, if the diameter of the spray nozzles is too small, multiple times of spraying are needed, the spraying efficiency is low, and if the diameter of the spray nozzles is too large, the problem of waste of spraying raw materials can occur.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a wide flat tub of special nozzle of spraying, it includes: nozzle body, enclosing cover and gas passage, the enclosing cover is covered at the nozzle body discharge side to enclosing cover inside forms the gas passage, the nozzle body includes: casing, nozzle entry and discharging pipe, the nozzle entry has been seted up on the casing, and the one side relative with the nozzle entry just is provided with the discharging pipe for the ejection of compact side, discharging pipe one end and the inside intercommunication of casing, the other end stretches out the enclosing cover behind gas passage, and the cross section of discharging pipe is two minor faces for the curved rectangle of evagination, set up the gas outlet that supplies the discharging pipe to stretch out on the enclosing cover, and the enclosing cover sets up the air inlet with gas passage intercommunication, the gas outlet area is greater than the discharging pipe.

Further, the outer cover is a cylindrical shell with an opening at one side, the outer cover is covered on the nozzle body through the opening, and the inner surface of the outer cover is detachably connected with the nozzle body.

Furthermore, the shape of the gas outlet is the same as the shape of the cross section of the discharge pipe, and the ratio of the circumference of the gas outlet to the inner circumference of the discharge pipe on the same cross section is 2: 1.

Furthermore, one end of the discharge pipe communicated with the interior of the shell is a discharge pipe inlet, one end extending out of the outer cover is a discharge pipe outlet, the length of the discharge pipe outlet is A, the width of the discharge pipe outlet is B, and A: B =2: 1.

Furthermore, the number of the air inlets is more than or equal to 2, and the air inlets are formed in the side wall of the outer cover and are uniformly distributed along the circumference of the outer cover.

Furthermore, the direction of the discharge pipe from the inlet of the discharge pipe to the outlet of the discharge pipe is gradually reduced.

Further, the discharge pipe is gradually reduced along the discharge direction, the vertex angle C with the gradually reduced width is 22 +/-3 degrees, and the vertex angle D with the gradually reduced length is 15 degrees.

Furthermore, the outer convex arcs of two short sides of the section of the discharge pipe are semicircular.

Furthermore, the shell is of a hollow tubular structure with a circular cross section, the discharge pipe is arranged at the circle center of one end of the shell, which is opposite to the inlet of the nozzle, and the discharge pipe and the shell are of an integral structure.

Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that: the nozzle is set to be in a wide flat shape, and the contraction section is arranged, so that sprayed coating can be compressed into the wide flat shape, the specificity of the nozzle is enhanced, the efficiency of arc spraying on a wide flat pipe workpiece is improved, the waste of spraying materials is reduced, gas sprayed by the gas channel can be sprayed to a coating sprayed from the nozzle outlet from the periphery to the middle, the coating is further atomized, and the coating can be further flattened.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a sectional view taken along the line A-A in the front view of the present invention;

FIG. 4 is a cross-sectional view of the front view of the present invention at the position B-B;

fig. 5 is a rear view of the present invention.

Legend: 1. a nozzle body; 12. a housing; 13. a nozzle inlet; 14. a discharge pipe; 141. an inlet of the discharge pipe; 142. an outlet of the discharge pipe; 2. an outer cover; 21. an air inlet; 22. an air outlet; 3. a gas channel.

Detailed Description

For better understanding of the purpose, structure and function of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, a special nozzle for spraying a wide flat tube comprises: nozzle body 1, enclosing cover 2 and gas passage 3, enclosing cover 2 covers at nozzle body 1 discharge side to enclosing cover 2 inside forms gas passage 3, and nozzle body 1 includes: a shell 12, a nozzle inlet 13 and a discharge pipe 14, wherein the shell 12 is provided with the nozzle inlet 13, a nozzle body 1 is connected with a spray gun through the nozzle inlet 13 matched with the spray gun, in the embodiment, the nozzle inlet 13 is circular, the discharge pipe 14 is arranged opposite to the nozzle inlet 13, one end of the discharge pipe 14 is communicated with the inside of the shell 12, the other end of the discharge pipe extends out of an outer cover 2 after passing through a gas channel 3, the cross section of the discharge pipe 14 is a rectangle with two short sides being convex arcs, the cross section of the discharge pipe 14 is matched with a wide flat pipe, so that the material sprayed out of the discharge pipe 14 conforms to the shape of the wide flat pipe, the specificity of the nozzle is increased, the spraying efficiency of the wide flat pipe is improved, the waste of spraying raw materials is reduced, the outer cover 2 is provided with a gas outlet 22 from which the discharge pipe 14 extends out, the outer cover 2 is provided with a gas inlet 21 communicated with the gas channel 3, and the area of the gas outlet 22 is larger than that of the discharge pipe 14, the air flow is sprayed out of the air outlet 22, so that the material sprayed out of the discharge pipe 14 can be further atomized and flattened, and the spraying effect is further optimized.

Enclosing cover 2 is one side open-ended cylindrical shell, through the opening side cap on nozzle body 1, and enclosing cover 2 internal surface and nozzle body 1 releasable connection, adopts interference fit to connect in this embodiment, and nozzle body 1 and enclosing cover 2 combination form the nozzle, simple structure, easy dismounting.

The shape of the gas outlet 22 is the same as the cross section of the discharge pipe 14, the ratio of the perimeter of the same cross section to the perimeter of the inside of the discharge pipe 14 is 2:1, the discharge amount is matched with the gas outlet amount, and the atomization and flattening effects are better.

Discharging pipe 14 is by discharging pipe entry 141 to the convergent of discharging pipe export 142 direction, compress the material when blowout in discharging pipe 14, be favorable to the atomizing of material, it is more even to make the atomizing with the cooperation of gas outlet 22, further improve atomizing and flatten the effect, improve the spraying quality, discharging pipe entry 141 length is 5mm in this embodiment, the width is 4mm, discharging pipe export 142 length is 4mm, the width is 2mm, be wide flat form after the spun material atomizing, the effect is better when spraying the wide flat pipe to corresponding specification.

The end of the discharge pipe 14 communicated with the inside of the shell 12 is a discharge pipe inlet 141, the end extending out of the outer cover 2 is a discharge pipe outlet 142, the length of the discharge pipe outlet 142 is A, the width of the discharge pipe outlet is B, A: B =2:1, the atomization is uniform after discharging in the range, the width and the thickness of the sprayed coating meet requirements, the spraying effect is good, if the ratio is increased, the coating is too thin, if the ratio is reduced, the coating is too thick, the spraying quality is affected, the discharge pipe 14 extends out of the outer cover 2, the gas sprayed from the gas outlet 22 can compress the material sprayed from the nozzle outlet 15 along the angle of the discharge pipe 14, the material cannot be compressed excessively and blocked from spraying, the extending distance in the embodiment is 0.25mm, the atomization and flattening effects are not affected, and the material spraying and the shape and the thickness of the coating cannot be blocked by excessively flattening.

The quantity of the air inlets 21 is more than or equal to 2, the side wall of the outer cover 2 is formed, the air inlets 21 are uniformly distributed along the circumference of the outer cover 2, the air inlets 21 can suck air, the air is sprayed out from the air outlets 22 through the air channel 3, the air is uniformly discharged from all positions of the air outlets, the coating is uniformly atomized and flattened, and the quantity of the air inlets 21 is preferably 4.

Discharging pipe 14 is along ejection of compact direction convergent, and the convergent apex angle C of width is 22 + -3, and the convergent apex angle D of length is 15, can reduce ejection of compact resistance, makes coating can not glued on discharging pipe 15 pipe walls again by the compression in the blowout process, and simultaneously, this angle atomizing and flattening effect are best.

The outer convex arcs of two short sides of the section of the discharge pipe 14 are semicircular, so that the edge of a workpiece is prevented from being leaked during spraying, the waste of coating can be reduced, and the resistance during spraying can be reduced, wherein the semicircular radius of the inlet 141 of the discharge pipe is 2mm, and the semicircular radius of the outlet 142 of the discharge pipe is 1 mm.

The shell 12 is a hollow tubular structure with a circular cross section, one end of the shell is sealed, a discharge pipe inlet 141 is arranged at the center of a circle at the sealed side, and materials sprayed out from the previous step of the arc spray gun directly enter the discharge pipe inlet 141 after passing through a nozzle inlet 13 and are sprayed out from a discharge pipe 14 to form a shape required by wide flat pipe spraying.

It is to be understood that the above-described embodiments of the present invention are merely examples provided for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims

1. The utility model provides a wide flat pipe spraying special nozzle which characterized in that: it includes: nozzle body (1), enclosing cover (2) and gas passage (3), enclosing cover (2) covers at the nozzle body (1) discharge side to form gas passage (3) between enclosing cover (2) and nozzle body (1), nozzle body (1) includes: casing (12), nozzle entry (13) and discharging pipe (14), seted up nozzle entry (13) on casing (12), the one side relative with nozzle entry (13) is for the ejection of compact side and be provided with discharging pipe (14), discharging pipe (14) one end and casing (12) inside intercommunication, the other end stretches out enclosing cover (2) behind gas passage (3), and the cross section of discharging pipe (14) is two minor faces for the arc rectangle of evagination, offer gas outlet (22) that supply discharging pipe (14) to stretch out on enclosing cover (2), and enclosing cover (2) offer air inlet (21) with gas passage (3) intercommunication, gas outlet (22) area is greater than discharging pipe (14).

2. The special spray nozzle for spraying the wide flat pipe according to claim 1, wherein: the outer cover (2) is a cylindrical shell with an opening at one side, the outer cover is covered on the nozzle body (1) through the opening, and the inner surface of the outer cover (2) is detachably connected with the nozzle body (1).

3. The special spray nozzle for spraying the wide flat pipe according to claim 1, wherein: the shape of the gas outlet (22) is the same as the cross section of the discharge pipe (14), and the ratio of the circumference to the inner circumference of the discharge pipe (14) on the same cross section is 2: 1.

4. The special spray nozzle for spraying the wide flat pipe according to claim 1, wherein: the discharge pipe (14) is communicated with the interior of the shell (12), one end of the discharge pipe (14) is a discharge pipe inlet (141), one end of the discharge pipe (14) extending out of the outer cover (2) is a discharge pipe outlet (142), the length of the discharge pipe outlet (142) is A, the width of the discharge pipe outlet is B, and A: B =2: 1.

5. The special spray nozzle for spraying the wide flat pipe according to claim 1, wherein: the number of the air inlets (21) is more than or equal to 2, the air inlets are arranged on the side wall of the outer cover (2), and the air inlets are uniformly distributed along the circumference of the outer cover (2).

6. The special spray nozzle for spraying the wide flat pipe according to claim 1, wherein: the tapping pipe (14) tapers from a tapping pipe inlet (141) to a tapping pipe outlet (142).

7. The special spray nozzle for spraying the wide flat pipe according to claim 6, wherein: the discharging pipe (14) is gradually reduced along the discharging direction, the vertex angle C with the gradually reduced width is 22 +/-3 degrees, and the vertex angle D with the gradually reduced length is 15 degrees.

8. The special spray nozzle for spraying the wide flat pipe according to claim 1, wherein: the outer convex arcs of two short sides of the section of the discharge pipe (14) are semicircular.

9. The special spray nozzle for spraying the wide flat pipe according to claim 1, wherein: the shell (12) is of a hollow tubular structure with a circular section, the discharge pipe (14) is arranged at the circle center of one end, opposite to the nozzle inlet (13), of the shell (12), and the discharge pipe (14) and the shell (12) are of an integrated structure.