CN212576595U

CN212576595U - Adjustable jet nozzle for high-speed jet powder conveying

Info

Publication number: CN212576595U
Application number: CN202021095555.6U
Authority: CN
Inventors: 李彬
Original assignee: Guangzhou Maritime University
Current assignee: Guangzhou Maritime University
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-23
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to the technical field of powder conveying, in particular to a high-speed jet powder conveying adjusting type jet nozzle, which comprises a nozzle body, wherein the inside of the nozzle body is slidably connected with an adjusting device, the adjusting device divides the inside of the nozzle body into a pre-mixing cavity, a contraction cavity and an expansion cavity from left to right in sequence, a powder conveying pipe is arranged in the pre-mixing cavity, a powder outlet end of the powder conveying pipe extends into the contraction cavity, the outer side wall of the powder conveying pipe is slidably connected with a telescopic pipe, the outer side wall of the telescopic pipe is fixedly connected with the inner side wall of the adjusting device through a plurality of connecting rods, the throat position in the nozzle is convenient to adjust through the adjusting device which is slidably connected in the nozzle body, meanwhile, the powder conveying pipe and the telescopic pipe are convenient to drive to adjust the powder conveying through the plurality of connecting rods, the speed of spraying particles is, further, the spraying area and the deposition efficiency can be adjusted, and the limitation and the use limitation of the spraying piece are reduced.

Description

Adjustable jet nozzle for high-speed jet powder conveying

Technical Field

The utility model relates to a technical field is carried to the powder, specifically is a high-speed efflux powder is carried with regulation formula jet nozzle.

Background

The cold spraying is a thermal spraying technology based on the aerodynamic principle, powder particles are carried by high-pressure gas to enter a spray gun and a nozzle from the axial direction to generate supersonic airflow, the powder particles impact a substrate in a completely solid state after being accelerated to a certain flow velocity by the high-speed airflow, and are deposited on the surface of the substrate through plastic deformation to form a compact coating.

The laval nozzle is a contraction-expansion type spray pipe, gas with certain pressure and low speed can generate supersonic flow through the spray head, the existing laval nozzle is internally divided into a premixing cavity, a contraction cavity and an expansion cavity, and the velocity distribution rule of particles is fixed when the throat part of the laval nozzle is fixed in length, so that the spraying speed and the spraying area of the spray nozzle are fixed, the deposition efficiency cannot be adjusted, the forming size and the quality of a sprayed part are limited, and the use limitation is high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a be convenient for adjust the inside of nozzle to the fluidic nozzle with adjustable be used is carried to the high-speed efflux powder of the restriction that reduces the spraying piece and use the limitation of spraying speed, spraying area and the deposition efficiency of being convenient for adjust the nozzle.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-speed efflux powder is carried with regulation formula jet nozzle, includes the nozzle body, the inside sliding connection of nozzle body has adjusting device, adjusting device divides into in proper order the inside of nozzle body from left to right and mixes the chamber in advance, shrink chamber and expansion chamber, and mix the intracavity and arrange and send the powder pipe, send the play powder end of powder pipe to stretch into to shrink intracavity, and sliding connection has flexible pipe on the lateral wall that sends the powder pipe, the lateral wall of flexible pipe passes through many connecting rods and adjusting device's inside wall fixed connection.

Preferably, the adjustment means comprises an adjustment ring, the inner side wall of the adjustment ring having a curvature.

Preferably, fixedly connected with regulating block on the lateral wall of adjustable ring, the other end of regulating block runs through the lateral wall of nozzle body and stretches out to the external world to the other end fixedly connected with operation ring of regulating block.

Preferably, the side wall of the nozzle body is provided with an adjusting opening matched with the adjusting block, and the adjusting block is in sliding fit with the adjusting opening.

Preferably, the right end position of the adjusting opening is shorter than the right end position of the adjusting ring.

Preferably, the outer side wall of the powder feeding pipe is fixedly connected with a sliding strip, the inner side wall of the telescopic pipe is provided with a sliding groove matched with the sliding strip, and the sliding strip is in sliding fit with the sliding groove.

Preferably, the cross section of the slide bar is T-shaped.

Preferably, the outer side wall of the operating ring is provided with anti-slip lines.

(III) advantageous effects

Compared with the prior art, the utility model provides a high-speed efflux powder is carried with regulation formula jet nozzle possesses following beneficial effect:

this high-speed efflux powder is carried with regulation formula jet nozzle, through the inside sliding connection's of nozzle body adjusting device, be convenient for adjust the inside throat position of nozzle, simultaneously through many connecting rods, be convenient for drive send the powder pipe and adjust with flexible pipe and send the powder, be convenient for adjust the speed of spraying granule to be convenient for adjust the spraying speed of nozzle, and then can adjust spraying area and deposition efficiency, reduce the restriction and the use limitation of spraying spare.

Drawings

FIG. 1 is a schematic view of the exploded perspective structure of the present invention;

FIG. 2 is a schematic view of a portion of the enlarged structure of FIG. 1;

FIG. 3 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 4 is a schematic view of the internal structure of the present invention;

fig. 5 is a schematic left-side view of the present invention.

In the figure: 1. a nozzle body; 2. a premix chamber; 3. a contracting cavity; 4. an expansion lumen; 5. a powder feeding pipe; 6. a telescopic pipe; 7. a connecting rod; 8. an adjusting ring; 9. an adjusting block; 10. an operating ring; 11. an adjustment port; 12. a slide bar; 13. a chute; 14. and (4) anti-skid lines.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

referring to fig. 1-5, an adjustable jet nozzle for high-speed jet powder delivery comprises a nozzle body 1, an adjusting device is slidably connected inside the nozzle body 1, the adjusting device comprises an adjusting ring 8, the inner side wall of the adjusting ring 8 has a certain curvature and is the throat of the nozzle body 1, the inside of the nozzle body 1 is conveniently divided into a premixing cavity 2, a contraction cavity 3 and an expansion cavity 4 from left to right in sequence, an adjusting block 9 is fixedly connected on the outer side wall of the adjusting ring 8, the other end of the adjusting block 9 penetrates through the side wall of the nozzle body 1 and extends out of the outside, an operating ring 10 is fixedly connected to the other end of the adjusting block 9, the adjusting block 9 is convenient to push the adjusting ring 8, anti-slip patterns 14 are arranged on the outer side wall of the operating ring 10, the frictional force on the outer side wall of the operating ring 10 is convenient to increase, the operating ring 10 is not easy to slip, an adjusting port 11 matched with the adjusting block, the adjusting block 9 is in sliding fit with the adjusting opening 11, so that the position of the adjusting ring 8 is convenient to slide, the throat position inside the nozzle is adjusted, the speed of spraying particles can be adjusted, the spraying speed, the spraying area and the deposition efficiency of the nozzle can be adjusted, the limitation and the use limitation of a spraying piece are reduced, the position of the right end of the adjusting opening 11 is shorter than the position of the right end of the adjusting ring 8, no gap is formed in the expansion cavity 4, the powder feeding pipe 5 is arranged in the premixing cavity 2, the powder outlet end of the powder feeding pipe 5 extends into the contraction cavity 3, the outer side wall of the powder feeding pipe 5 is in sliding connection with the telescopic pipe 6, the outer side wall of the powder feeding pipe is fixedly connected with a slide bar 12, the section of the slide bar 12 is T-shaped, the sliding stability is good, the slide bar is not easy to fall off during sliding, the inner side wall of the telescopic pipe 6 is provided with a sliding groove 13 matched with, the outer side wall of the telescopic pipe 6 is fixedly connected with the inner side wall of the adjusting device through a plurality of connecting rods 7, and the adjusting ring 8 is convenient to adjust and drive the powder feeding pipe 5 and the telescopic pipe 6 to adjust and feed powder.

In summary, when the adjustable jet nozzle for high-speed jet powder delivery is used, the adjustable jet nozzle for high-speed jet powder delivery is firstly fixedly installed on a spray gun required to be used for spraying, the speed of spraying particles needs to be adjusted, so that when the spraying speed, the spraying area and the deposition efficiency of the nozzle are adjusted, the adjusting ring 8 can be driven to slide in the nozzle body 1 by pushing the operating ring 10, because the adjusting ring 8 is tightly matched with the nozzle body 1, a certain driving force needs to be applied when the operating ring 10 is pushed, the position of the adjusting ring 8 can be kept fixed after being changed, meanwhile, the telescopic pipe 6 is driven to slide on the outer side wall of the powder feeding pipe 5 when the adjusting ring 8 slides, so that the powder feeding pipe 5 and the telescopic pipe 6 can be driven to adjust powder feeding when the adjusting ring 8 is adjusted, and the throat position inside the nozzle can be adjusted, according to the principle of hydrodynamics, the mass of gas passing through each section of the nozzle in unit time is equal under the stable flowing state of the gas, so that under the normal condition, the nozzle with the low flow rate section has a large area, and the nozzle with the high flow rate section has a small area, so that the gas gradually contracts when entering the throat part of the nozzle, the flow rate is gradually increased, and the flow rate of the gas is changed when the position of the throat part and the length of the expansion cavity 4 are changed, so that the speed of spraying particles can be adjusted, the spraying speed, the spraying area and the deposition efficiency of the nozzle can be adjusted, and the limitation and the use limitation of a spraying piece are reduced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-speed efflux powder is carried with regulation formula jet nozzle, includes nozzle body (1), its characterized in that: the inside sliding connection of nozzle body (1) has adjusting device, adjusting device divides into from left to right in proper order with the inside of nozzle body (1) and mixes chamber (2), shrink chamber (3) and expansion chamber (4), and mix and arrange in the chamber (2) in advance and send powder pipe (5), send the play powder end of powder pipe (5) to stretch into in shrink chamber (3), and sliding connection has flexible pipe (6) on the lateral wall of sending powder pipe (5), the lateral wall of flexible pipe (6) is through many connecting rods (7) and adjusting device's inside wall fixed connection.

2. The regulated fluidic nozzle for high velocity jet powder delivery according to claim 1, further comprising: the adjusting device comprises an adjusting ring (8), and the inner side wall of the adjusting ring (8) has a certain curvature.

3. The regulated fluidic nozzle for high velocity jet powder delivery according to claim 2, further comprising: fixedly connected with regulating block (9) on the lateral wall of adjustable ring (8), the other end of regulating block (9) runs through the lateral wall of nozzle body (1) and stretches out to the external world to the other end fixedly connected with operating ring (10) of regulating block (9).

4. The regulated fluidic nozzle for high velocity jet powder delivery according to claim 3, further comprising: the nozzle is characterized in that an adjusting opening (11) matched with the adjusting block (9) is formed in the side wall of the nozzle body (1), and the adjusting block (9) is in sliding fit with the adjusting opening (11).

5. The regulated fluidic nozzle for high velocity jet powder delivery according to claim 4, further comprising: the right end position of the adjusting opening (11) is shorter than the right end position of the adjusting ring (8).

6. The adjustable jet nozzle for high velocity jet powder delivery according to claim 5, wherein: the outer side wall of the powder feeding pipe (5) is fixedly connected with a sliding strip (12), the inner side wall of the telescopic pipe (6) is provided with a sliding groove (13) matched with the sliding strip (12), and the sliding strip (12) is in sliding fit with the sliding groove (13).

7. The adjustable jet nozzle for high velocity jet powder delivery according to claim 6, wherein: the cross section of the slide bar (12) is T-shaped.

8. The adjustable jet nozzle for high velocity jet powder delivery according to claim 7, wherein: the outer side wall of the operating ring (10) is provided with anti-skid grains (14).