CN213133064U

CN213133064U - Special powder gun for spheroidizing fine powder

Info

Publication number: CN213133064U
Application number: CN202021563946.6U
Authority: CN
Inventors: 孙伟民
Original assignee: Henan Nengwei New Materials Technology Co ltd
Current assignee: Henan Nengwei New Material Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-05-07
Anticipated expiration: 2030-07-31

Abstract

A special powder spray gun for spheroidizing fine powder comprises a connector, a powder spray pipe and a spray head, wherein the powder spray pipe is arranged at the lower part of the connector, and the spray head is arranged at the lower end of the powder spray pipe; the sprayer is a semicircular shell with an open upper end, the upper end of the sprayer is connected with the lower end of the powder spraying pipe, a cylindrical water-resisting ring is arranged on the inner side of the sprayer, the upper end face of the water-resisting ring is flush with the upper end face of the sprayer, and a conical flow-dividing column is arranged in the middle of the inner side of the sprayer; the utility model has the advantages that the special powder gun for the sphericization of the fine powder has good effect that the problem of powder adhesion in the powder spraying process is effectively reduced by using the common fine powder to spray the powder through the powder spraying hole on the spray head in the powder gun and then to be heated into the spherical shape, so that the yield of the sphericization of the fine powder is greatly improved, and the spherical quality of the fine powder is obviously improved.

Description

Special powder gun for spheroidizing fine powder

Technical Field

The utility model belongs to the technical field of the powder is made, especially, relate to a special powder gun of micro-fine powder sphericization.

Background

With the continuous development of technologies such as powder metallurgy, 3D printing and the like, the using amount of fine powder is increased at a high speed, the requirement on the metal powder technology is higher and higher, the traditional fine powder is in a tearing irregular shape, the organization structure of the fine powder is not uniform in the using process, the organization structure of the powder is poor, the reprocessing performance is low, the mechanical property of a manufactured product is greatly influenced, and the technical advantages of powder metallurgy and 3D printing are reduced, so that the spheroidization of the fine powder is a common development direction in the industry, the spheroidization metal finished product produced by the existing fine powder equipment is a spheroidization metal finished product which is prepared by forming working gas into a plasma state in a heating area by utilizing high-frequency induction and can achieve high quality, but when the powder gun of the existing high-frequency induction plasma equipment is spheroidized, the fine powder which is linearly sprayed from the end of the powder gun is melted at a high temperature, the sprayed fine powder flows downwards in a vortex shape due to the influence of surrounding inert gases, and the fine powder is very easy to bond, so that the granularity of the produced spherical fine powder is increased, the surface quality of the fine powder is obviously reduced, and the overall quality is greatly reduced; therefore, a new powder gun is needed to solve the problem of the quality reduction caused by serious powder adhesion in the process of sphericizing the existing fine powder in the heating equipment through the powder gun.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide a special powder gun for spheroidizing fine powder, which is used for solving the problem of quality reduction caused by serious powder adhesion in the process of spheroidizing the existing fine powder in heating equipment by using the powder gun.

In order to solve the technical problems, the invention provides the following technical scheme:

a special powder spray gun for spheroidizing fine powder comprises a connector, a powder spray pipe and a spray head, wherein the powder spray pipe is arranged at the lower part of the connector, and the spray head is arranged at the lower end of the powder spray pipe; the connecting head is composed of a powder spraying connecting ring, an upper spacer ring, a water inlet connecting ring and a water outlet connecting ring, the powder spraying connecting ring, the upper spacer ring, the water inlet connecting ring and the water return connecting ring are all of circular structures with the same diameter, a threaded through hole is formed in the middle of the upper surface of the powder spraying connecting ring, the upper spacer ring is arranged at the lower part of the powder spraying connecting ring, the water inlet connecting ring is arranged at the lower part of the upper spacer ring, and a threaded through hole is formed in one side of the excircle of the water inlet connecting ring; the water return connecting ring is arranged at the lower part of the water inlet connecting ring, and a threaded through hole is formed in one side of the outer circle of the water return connecting ring; the sprayer is a semicircular shell with an open upper end, the upper end of the sprayer is connected with the lower end of the powder spraying pipe, a cylindrical water-proof ring is arranged on the inner side of the sprayer, the upper end face of the water-proof ring is flush with the upper end face of the sprayer, a conical shunting column is arranged in the middle of the inner side of the sprayer, and powder spraying holes are uniformly formed in the bottom surface between the water-proof ring and the shunting column in the sprayer.

The powder spraying pipe is composed of a powder passing pipe, a water inlet pipe, a water return pipe and a bottom ring, the powder passing pipe, the water inlet pipe and the water return pipe are sleeved in a layered mode from inside to outside, the distance is kept between the powder passing pipe, the water inlet pipe and the water return pipe, the upper end of the powder passing pipe is communicated with a thread through hole of the powder spraying connecting ring, the upper end of the water inlet pipe is communicated with the thread through hole of the water inlet connecting ring, the upper end of the water return pipe is communicated with the thread through hole of the water return connecting ring, the bottom ring is arranged at the lower end of the water return pipe.

The bottom ring is a horizontally arranged circular thin sheet, a middle through hole of the bottom ring is connected with the lower end of the excircle of the powder passing pipe, the lower end face of the bottom ring is flush with the lower end of the powder passing pipe, cooling through holes are uniformly arranged around the middle through hole on the bottom ring, and the cooling through holes are communicated with the inside of the water inlet pipe.

The flow dividing column is of a cylindrical structure, the upper end of the flow dividing column is of a conical structure, and the upper end of the flow dividing column is lower than the upper end face of the spray head.

The outer diameter of the upper end surface of the spray head is consistent with that of the water return pipe.

The utility model has the advantages that the special powder gun for the sphericization of the fine powder has good effect that the problem of powder adhesion in the powder spraying process is effectively reduced by using the common fine powder to spray the powder through the powder spraying hole on the spray head in the powder gun and then to be heated into the spherical shape, so that the yield of the sphericization of the fine powder is greatly improved, and the spherical quality of the fine powder is obviously improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a in fig. 1.

Fig. 3 is a view of B in fig. 1.

In the figure: 1. powder spraying connecting rings, 2, water inlet connecting rings, 3, water outlet connecting rings, 4, a water return pipe, 5, a water inlet pipe, 6, a powder passing pipe, 7, a bottom ring, 8, a spray head, 9, a water inlet pipe joint, 10, a water outlet pipe joint, 11, an upper spacing ring, 12, a water isolating ring, 13, a flow dividing column, 14, powder spraying holes, 15 and cooling through holes.

Detailed Description

The present invention will be described with reference to the accompanying drawings.

As shown in fig. 1, 2, and 3, the special powder spray gun for spheroidizing fine powder comprises a connector, a powder spray pipe, and a nozzle, wherein the connector comprises a powder spray connection ring 1, an upper spacer 11, a water inlet connection ring 2, and a water outlet connection ring 3, the powder spray connection ring 1, the upper spacer 11, the water inlet connection ring 2, and the water return connection ring 3 are all circular ring structures with the same diameter, a threaded through hole is formed in the middle of the upper surface of the powder spray connection ring 1, the upper spacer 11 is arranged at the lower part of the powder spray connection ring 1, the water inlet connection ring 2 is arranged at the lower part of the upper spacer 11, and a threaded through hole is formed in one side of the outer circle of the water; the water return connecting ring 3 is arranged at the lower part of the water inlet connecting ring 2, and a threaded through hole is formed in one side of the excircle of the water return connecting ring 3; the powder spraying pipe is arranged at the lower part of the connector and consists of a powder passing pipe 6, a water inlet pipe 5, a water return pipe 4 and a bottom ring 7, the powder passing pipe 6, the water inlet pipe 5 and the water return pipe 4 are sleeved in a layered mode from inside to outside, the powder passing pipe 6, the water inlet pipe 5 and the water return pipe 4 are spaced, the upper end of the powder passing pipe 6 is communicated with a threaded through hole of the powder spraying connecting ring 1, the upper end of the water inlet pipe 5 is communicated with a threaded through hole of the water inlet connecting ring 2, the upper end of the water return pipe 4 is communicated with a threaded through hole of the water return connecting ring 3, the bottom ring 7 is arranged at the lower end of the water return pipe 4, and the outer diameter of the bottom; the bottom ring 7 is a horizontally arranged annular slice, a middle through hole of the bottom ring 7 is connected with the lower end of the excircle of the powder passing tube 6, the lower end surface of the bottom ring 7 is flush with the lower end of the powder passing tube 6, cooling through holes 15 are uniformly arranged around the middle through hole on the bottom ring 7, and the cooling through holes 15 are communicated with the inside of the water inlet tube 5;

the spray head 8 is arranged at the lower end of the powder spraying pipe; the spray head 8 is a semicircular shell with an open upper end, the upper end surface of the spray head 8 is connected with the lower edge of the bottom ring 7 of the powder spraying pipe, and the outer diameter of the upper end surface of the spray head 8 is consistent with that of the water return pipe 4; a cylindrical water-stop ring 12 is arranged on the inner side of the spray head 8, the upper end face of the water-stop ring 12 is flush with the upper end face of the spray head 8, a conical shunt column 13 is arranged in the middle of the inner side of the spray head 8, the shunt column 13 is of a cylindrical structure, the upper end of the shunt column 13 is of a conical structure, and the upper end of the shunt column 13 is lower than the upper end face of the spray head; powder spraying holes 14 are uniformly formed in the bottom surface between the water isolation ring 12 and the flow dividing column 13 in the spray head 8; the lower end of the powder spraying hole 14 is provided with a chamfer, so that fine powder sprayed in the powder spraying hole 14 is more uniformly dispersed and is not easy to bond.

When the special powder spray gun for spheroidizing the superfine powder works, a cooling water inlet pipe joint 9 and a cooling water outlet pipe joint 10 of nano powder equipment are respectively connected with a threaded through hole of a water inlet connecting ring 2 and a threaded through hole of a water outlet connecting ring 3 of a connector, and then a conveying pipe of the powder equipment is connected with the threaded through hole at the upper end of a powder spray connecting ring 1; then, cooling water circulation equipment is opened to circularly cool the powder spraying pipe, and meanwhile, cooling water can enter the outer side of the water isolation ring 12 in the sprayer through the cooling through holes 15 in the bottom ring 7 to cool the sprayer 8; then the fine powder sprayed from the powder passing pipe 6 of the powder spraying pipe enters a heating area of a heating device, at the moment, the heating device heats the fine powder sprayed from the powder spraying hole 14 on the spray head 8 of the powder passing pipe 6, so that the fine powder is heated and melted into spherical particles, the fine powder is sprayed and dispersed from the powder spraying hole 14 of the spray head 8, the spherical fine powder is prevented from being bonded, and the process of sphericizing the fine powder is completed.

The part of the utility model not detailed is prior art.

Claims

1. The utility model provides a special powder gun of fine powder sphericization, includes connector, dusting pipe and shower nozzle (8), characterized by: the powder spraying pipe is arranged at the lower part of the connector, and the spray head (8) is arranged at the lower end of the powder spraying pipe; the connector comprises a powder spraying connecting ring (1), an upper spacer ring (11), a water inlet connecting ring (2) and a water outlet connecting ring (3), wherein the powder spraying connecting ring (1), the upper spacer ring (11), the water inlet connecting ring (2) and the water return connecting ring are all circular structures with the same diameter, a threaded through hole is formed in the middle of the upper surface of the powder spraying connecting ring (1), the upper spacer ring (11) is arranged on the lower portion of the powder spraying connecting ring (1), the water inlet connecting ring (2) is arranged on the lower portion of the upper spacer ring (11), and a threaded through hole is formed in one side of the excircle of the water inlet connecting ring (2); the water return connecting ring is arranged at the lower part of the water inlet connecting ring (2), and a threaded through hole is formed in one side of the excircle of the water return connecting ring; the spray head (8) is a semicircular shell with an open upper end, the upper end of the spray head (8) is connected with the lower end of a powder spraying pipe, a cylindrical water-resisting ring (12) is arranged on the inner side of the spray head (8), the upper end face of the water-resisting ring (12) is flush with the upper end face of the spray head (8), a conical flow distributing column (13) is arranged in the middle of the inner side of the spray head (8), and powder spraying holes (14) are uniformly formed in the bottom face between the water-resisting ring (12) and the flow distributing column (13) in the spray head (8).

2. The powder spray gun according to claim 1, wherein the powder spray gun comprises: powder spraying pipe constitute by crossing powder pipe (6), inlet tube (5), wet return (4) and end ring (7), cross powder pipe (6), inlet tube (5) and wet return (4) from inside to outside layering suit, cross powder pipe (6), inlet tube (5), and keep the interval between wet return (4), cross powder pipe (6) upper end and the screw through-hole intercommunication of the go-between of dusting (1), the screw through-hole intercommunication of inlet tube (5) upper end and intake go-between (2), wet return (4) upper end and the screw through-hole intercommunication of return go-between, end ring (7) set up the lower extreme in wet return (4), the external diameter and wet return (4) external diameter of end ring (7) are unanimous.

3. The powder gun according to claim 2, wherein the powder gun comprises: the bottom ring (7) is a horizontally arranged circular thin sheet, a middle through hole of the bottom ring (7) is connected with the lower end of the excircle of the powder passing pipe (6), the lower end face of the bottom ring (7) is flush with the lower end of the powder passing pipe (6), cooling through holes (15) are uniformly arranged around the middle through hole above the bottom ring (7), and the cooling through holes (15) are communicated with the inside of the water inlet pipe (5).

4. The powder spray gun according to claim 1, wherein the powder spray gun comprises: the flow dividing column (13) is of a cylindrical structure, the upper end of the flow dividing column (13) is of a conical structure, and the upper end of the flow dividing column (13) is lower than the upper end face of the spray head (8).

5. The powder spray gun according to claim 1, wherein the powder spray gun comprises: the outer diameter of the upper end surface of the spray head (8) is consistent with that of the water return pipe (4).