CN217725964U

CN217725964U - Built-in coating atomizer of pipeline

Info

Publication number: CN217725964U
Application number: CN202220963960.8U
Authority: CN
Inventors: 贺利平; 潘先伦; 刘忠卫; 李小东
Original assignee: Chongqing Qingling Foundry Co ltd; Qingling Motors Group Co Ltd
Current assignee: Chongqing Qingling Foundry Co ltd; Qingling Motors Group Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-11-04
Anticipated expiration: 2032-04-20

Abstract

The utility model provides a built-in coating atomizer of pipeline, include: the coating connector, the coating pipe and the spray head are sequentially connected along the same axis; a connecting port is formed in one end, close to the coating connector, of the coating pipe, an air blowing pipe is arranged in the connecting port, the first end of the air blowing pipe extends out of the coating pipe and is connected with an air source, and the second end of the air blowing pipe is positioned in the coating pipe and is communicated with a spray head; the coating device is characterized in that a coating channel and a ventilation channel are arranged in the spray head, the first end of the coating channel is communicated with the second end of the air blowing pipe, the first end of the ventilation channel is communicated with the coating pipe, the second end of the coating channel is communicated with the second end of the ventilation channel, and a nozzle is arranged at the communication position of the coating channel and the ventilation channel. Set up the passageway of ventilating and coating passageway in the shower nozzle in this scheme, through the mode of the second end setting with the gas blow pipe in the coating is intraductal, avoid the gas blow pipe to set up outside the coating pipe and can't stretch into in the long hole of part.

Description

Built-in coating atomizer of pipeline

Technical Field

The utility model belongs to the part spraying field especially relates to a built-in coating atomizer of pipeline.

Background

When the parts with long inner holes, such as pipes, are sprayed with the paint, the spraying device needs to stretch into the long inner holes for spraying, and particularly in a centrifugal casting process, the requirement on uniformity is particularly high when the inner walls of steel dies with small inner holes are sprayed with the paint. At present, a spraying device with higher requirement on uniformity cannot extend into a long inner hole for spraying paint due to the structure, the shape and the like of the spraying device.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a paint spraying apparatus with built-in pipeline to spray the inner long hole of a part.

In order to achieve the above and other related objects, the present invention provides a built-in paint spraying apparatus for pipelines, which comprises a paint connector, a paint tube and a nozzle connected in sequence along the same axis; a connecting port is formed in one end, close to the coating connector, of the coating pipe, an air blowing pipe is arranged in the connecting port, the first end of the air blowing pipe extends out of the coating pipe and is connected with an air source, and the second end of the air blowing pipe is positioned in the coating pipe and is communicated with a spray head; the coating device is characterized in that a coating channel and a ventilation channel are arranged in the spray head, the first end of the coating channel is communicated with the second end of the air blowing pipe, the first end of the ventilation channel is communicated with the coating pipe, the second end of the coating channel is communicated with the second end of the ventilation channel, and a nozzle is arranged at the communication position of the coating channel and the ventilation channel.

Further, the coating material passage is arranged in parallel with the air vent passage, and the coating material passage is arranged on the axis of the spray head.

Furthermore, an inclined flow channel is communicated between the second end of the coating channel and the second end of the ventilation channel, and the inclined flow channel and the axis of the spray head are arranged in a crossed manner; the first end of the inclined flow channel is communicated with the ventilation channel, the middle of the inclined flow channel is communicated with the coating channel, and the nozzle is installed at the second end of the inclined flow channel.

Furthermore, the first end of the coating pipe is fixedly connected with the coating connector, a mounting channel is formed in the second end of the coating pipe, and the first end of the spray head extends into the mounting channel.

Furthermore, a positioning sleeve for positioning the air blowing pipe is installed in the installation channel, positioning holes for the air blowing pipe to pass through are formed in the end faces of the two ends of the positioning sleeve, and the air blowing pipe is in clearance fit with the positioning holes.

Furthermore, the outer surface of the positioning sleeve is in threaded connection with the inner wall of the mounting channel, and the positioning hole is a hexagonal hole.

Furthermore, a bushing is arranged between the positioning sleeve and the spray head, an avoiding opening of the air blowing pipe is formed in one end, close to the spray head, of the bushing, and the air blowing pipe is in clearance fit with the inner wall of the bushing.

Furthermore, a connecting piece for connecting the bushing and the spray head is arranged between the bushing and the spray head, and a first communicating channel for communicating the air blowing pipe with the ventilating channel and a second communicating channel for communicating the coating pipe with the coating channel are arranged on the connecting piece.

Furthermore, the second communicating channel is arranged on the axis of the connecting piece, and one end of the first communicating channel, which is close to the spray head, is provided with an annular flow groove used for communicating with the ventilating channel.

Furthermore, the first end of the air blowing pipe is obliquely arranged towards the direction far away from the spray head.

As mentioned above, the utility model discloses a built-in coating atomizer of pipeline has following beneficial effect:

set up ventilation channel and coating passageway in the shower nozzle in this scheme, through the second end setting with the gas blow pipe in the intraductal mode of coating, avoid the gas blow pipe to set up outside the coating pipe and can't stretch into the long hole of part.

The air blowing pipe is arranged, so that the coating is atomized, and the coating is sprayed more uniformly.

Drawings

Fig. 1 is a schematic structural diagram of a paint spraying apparatus with a built-in pipeline in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a coating tube according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a positioning sleeve according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a bushing according to an embodiment of the present invention.

Reference numerals in the drawings of the specification include: the coating device comprises a coating connector 1, a coating pipe 2, a connecting port 201, an installation channel 202, a positioning sleeve 3, a positioning hole 301, an avoidance hole 302, a lining 4, an avoidance port 401, a connecting piece 5, a first communication channel 501, a second communication channel 502, an annular runner 503, a spray head 6, a ventilation channel 601, a coating channel 602, an inclined runner 603, a nozzle 7, a sealing ring 8 and an air blow pipe 9.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Examples

As shown in fig. 1 to 4, the present embodiment provides a pipe built-in paint spraying apparatus, including: the paint spraying device comprises a paint connector 1, a paint pipe 2, a positioning sleeve 3, a lining 4, a connecting piece 5, a spray head 6 and an air blowing pipe 9.

The left end of the coating pipe 2 is connected with the coating connector 1, the inner wall of the right end of the coating pipe 2 is provided with an installation channel 202, the positioning sleeve 3, the lining 4 and the connecting piece 5 are installed in the installation channel 202, and the left end of the spray head 6 extends into the installation channel 202 and is in threaded connection. The coating pipe 2 is provided with a connector 201 for installing the air blowing pipe 9 near the left end, and the connector 201 is obliquely arranged so as to facilitate the air circulation in the air blowing pipe 9 and reduce the air flow steering angle.

The left end of the air blowing pipe 9 is positioned outside the coating pipe 2 and is used for being connected with an air source. The right end of the air blowing pipe 9 passes through the connecting port 201 and then is positioned in the coating pipe 2 and is communicated with the spray head 6. One end of the air blowing pipe 9, which is positioned outside the coating pipe 2, is obliquely arranged towards the direction of the coating connector 1 so as to be conveniently stretched into the part for spraying. The air blowing pipe 9 and the coating pipe 2 are welded and sealed at the position of the connecting port 201.

The positioning sleeve 3 is used for positioning the blowing pipe 9. The outer wall of the locating sleeve 3 is in threaded engagement with the inner wall of the mounting channel 202. Run through 3 both ends terminal surfaces of positioning sleeve and seted up locating hole 301, positioning sleeve 3 has been close to 6 one ends of shower nozzle and has been seted up and has been dodged hole 302, and locating hole 301 is hexagonal hole to carry out the installation of positioning sleeve 3 and coating pipe 2 through hexagonal spanner etc.. The positioning hole 301 is in clearance fit with the air blowing pipe 9 so that the coating can flow through the clearance between the positioning hole and the air blowing pipe. The avoidance hole 302 is arranged to avoid the air blowing pipe 9, so that interference between the air blowing pipe and the air blowing pipe is avoided.

The bush 4 is arranged between the positioning sleeve 3 and the connecting piece 5, and one end of the bush 4 close to the spray head 6 is provided with an avoiding opening 401 of the air blow pipe 9. The blow tube 9 is a clearance fit with the bushing 4 to facilitate the flow of paint through the gap therebetween.

The connecting piece 5 is arranged between the bushing 4 and the spray head 6. First communicating channel 501 and second communicating channel 502 are arranged on the end faces of the two ends of the penetrating connecting piece 5, the first communicating channel 501 and the second communicating channel 502 are arranged in parallel, and the second communicating channel 502 is arranged on the axis of the connecting piece 5. The right end of the blow pipe 9 is connected to a first communication passage 501. One end of the connecting piece 5 close to the spray head 6 is provided with an annular flow groove 503, and the annular flow groove 503 is communicated with one end of the first communication channel 501 close to the spray head 6.

The spray head 6 is provided with a vent channel 601 and a coating channel 602, and the vent channel 601 is arranged in parallel with the coating channel 602. The coating material passage 602 is opened on the axis of the spray head 6 so as to be aligned with the second communicating passage 502 of the connecting member 5, and the circulation of the coating material is realized. The coating material channel 602 is communicated with the first communicating channel 501 through an annular flow groove 503, and the annular flow groove 503 is formed, so that the ventilating channel 601 can be communicated with the first communicating channel 501 at any rotation angle of the spray head 6. An inclined runner 603 and a mounting opening are further formed in the spray head 6, and the inclined runner 603 is obliquely arranged towards the direction away from the paint connector 1, so that the inclined runner 603 and the axis of the spray head 6 are arranged in an intersecting manner. A first end of the oblique flow channel 603 is communicated with the ventilation channel 601, a middle portion of the oblique flow channel 603 is communicated with the paint channel 602, and a second end of the oblique flow channel 603 is communicated with the mounting port. The nozzle 7 is arranged in the mounting opening so as to spray the inner cavity of the part. The right end of the spray head 6 is in arc transition, so that the parts needing to be sprayed are prevented from being scratched. The inclined runner 603 serves to communicate the vent channel 601 with the paint channel 602.

In addition, a sealing ring 8 is arranged at the position where the second communication passage 502 communicates with the coating material passage 602, so as to perform a sealing function.

When the paint spraying device is used, paint enters the inclined flow channel 603 through the paint connector 1, the paint pipe 2, the positioning sleeve 3, the bushing 4, the second communication channel 502 and the paint channel 602. The left end of the air blowing pipe 9 is connected with an air source, high-pressure air enters the air blowing pipe 9 from the air source, enters the inclined flow channel 603 after passing through the air blowing pipe 9, the first communication channel 501, the annular flow groove 503 and the air ventilation channel 601, and atomizes the paint in the inclined flow channel 603, and the atomized paint is sprayed out from the nozzle 7, so that the uniform spraying effect is realized.

The position where the high-pressure gas and the coating material are merged in this embodiment is the oblique flow passage 603, not the flow passage provided along the axis of the shower head 6, because: if the flow path at the position where the high-pressure gas and the coating material join is not arranged obliquely but arranged along the axis of the shower head 6, the flow path diameter where they join must cover the air vent channel 601 and the coating material channel 602, which may result in a large flow path diameter at the position where they join, affecting the flow rate of the high-pressure gas, and slowing down the flow rate. The inclined flow channel 603 is arranged to control the flow rate so that the nozzle 7 is installed at a position close to the lower side of the spray head 6, thereby facilitating the spray head 6 to the inner wall of the part.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. It will be apparent to those skilled in the art that modifications and variations can be made to the above-described embodiments without departing from the spirit or scope of the invention and it is intended that all such equivalent modifications and variations be considered within the scope of the appended claims without departing from the spirit and scope of the invention.

Claims

1. A paint spraying apparatus with built-in pipeline is characterized by comprising: the coating connector, the coating pipe and the spray head are sequentially connected along the same axis; a connecting port is formed in one end, close to the coating connector, of the coating pipe, an air blowing pipe is arranged in the connecting port, the first end of the air blowing pipe extends out of the coating pipe and is connected with an air source, and the second end of the air blowing pipe is positioned in the coating pipe and is communicated with a spray head; the coating device is characterized in that a coating channel and a ventilation channel are arranged in the spray head, the first end of the coating channel is communicated with the second end of the air blowing pipe, the first end of the ventilation channel is communicated with the coating pipe, the second end of the coating channel is communicated with the second end of the ventilation channel, and a nozzle is arranged at the communication position of the coating channel and the ventilation channel.

2. The in-line paint sprayer of claim 1 wherein the paint passage is disposed parallel to the vent passage, the paint passage being disposed on the axis of the spray head.

3. The in-line paint spraying apparatus of claim 1, wherein the second end of the paint passage and the second end of the vent passage are communicated with an inclined flow passage, and the inclined flow passage intersects with an axis of the spray head; the first end of the inclined flow channel is communicated with the ventilation channel, the middle of the inclined flow channel is communicated with the coating channel, and the nozzle is installed at the second end of the inclined flow channel.

4. The paint spraying apparatus with built-in pipe as claimed in claim 1, wherein the first end of the paint pipe is fixedly connected to the paint connector, the second end of the paint pipe has a mounting channel formed therein, and the first end of the nozzle is inserted into the mounting channel.

5. The in-pipe paint spraying apparatus of claim 4, wherein a positioning sleeve for positioning the blowing pipe is installed in the installation channel, positioning holes for the blowing pipe to pass through are formed through end faces of both ends of the positioning sleeve, and the blowing pipe and the positioning holes are in clearance fit.

6. The paint spraying apparatus with built-in pipe as claimed in claim 5, wherein the outer surface of the positioning sleeve is in threaded connection with the inner wall of the installation channel, and the positioning hole is a hexagonal hole.

7. The device for spraying the paint in the pipeline as claimed in claim 5, wherein a bushing is arranged between the positioning sleeve and the nozzle, an avoiding opening of an air blowing pipe is formed at one end of the bushing close to the nozzle, and the air blowing pipe is in clearance fit with the inner wall of the bushing.

8. The in-line paint spraying apparatus of claim 7, wherein a connector for connecting the bushing and the nozzle is provided therebetween, and the connector is provided with a first communicating passage for communicating the blowing pipe with the vent passage and a second communicating passage for communicating the paint pipe with the paint passage.

9. The in-line paint spraying apparatus of claim 8 wherein the second communicating channel opens on the axis of the connector and the first communicating channel is provided with an annular flow channel adjacent the spray head for communicating with the vent channel.

10. The in-line paint sprayer according to claim 1, wherein the first end of the air blow pipe is inclined away from the head.