Large pipe inner wall spraying device capable of achieving uniform spraying

Abstract

The utility model discloses a large pipe inner wall spraying device with uniform spraying, which relates to the technical field of spraying equipment and comprises a support sleeve, a ball screw, a screw nut, a support ring, a support frame, a support disc and a telescopic spraying frame. In the process that the lead screw nut linearly moves along the ball screw, the distance between the lead screw nut and the supporting ring is adjusted, then the supporting frame is adjusted, the supporting frame and the inner wall of a large pipe are attached and supported, the servo electric cylinder is adjusted to stretch out and draw back, and telescopic adjustment of the telescopic spraying frame can be achieved; the distance between the telescopic spraying frame and the inner wall of the large pipe can be adjusted, the telescopic spraying frame is more easily suitable for spraying treatment of the inner wall of the large pipe, a spray head of the telescopic spraying frame is closer to the inner wall of the large pipe, the distance between the spray head of the telescopic spraying frame and the inner wall of the large pipe is closer, and spraying treatment is more uniform when the telescopic spraying frame rotates for spraying.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying equipment, in particular to a large pipe inner wall spraying device for uniform spraying. Background Art

[0002] The pipeline inner wall spraying technology is mainly used to add a layer of anti-corrosion coating on the inner wall of the pipeline, thereby extending the service life of the pipeline.

[0003] Patent (CN219400739U) discloses a pipe inner wall spraying device. The utility model includes a base, a lower column and an upper column; the upper end of the base has a lower column, the lower end of the lower column is vertically fixedly connected to the upper end of the base, the upper end of the lower column has an upper column, the lower end of the upper column is fixedly connected in the lower column, the upper end of the upper column has a paint spraying device, and the lower end of the paint spraying device is fixedly connected to the upper end of the upper column. The different angles between the upper support leg and the lower support leg result in different distances between the roller and the lower column, so that the roller can fit with the inner wall of the circular tube of different diameters, the roller can exert the same force on the inner wall of the circular tube of different diameters, and the moving speed of the roller remains unchanged under the same power. The outer wall of the paint spraying device is provided with a plurality of paint spraying nozzles evenly spaced, and the plurality of paint spraying nozzles remain stationary when working, and the plurality of paint spraying nozzles can spray the inner wall of the pipe in all directions. The utility model has a simple structure and is easy to operate.

[0004] When the pipe inner wall spraying device in the above patent document sprays the inner wall of a large pipe, the nozzle located at the center of the pipe sprays the inner wall of the pipe. Since the nozzle is far away from the inner wall of the pipe, the spraying uniformity of the inner wall of the pipe is poor. Utility Model Content

[0005] The utility model aims to provide a large pipe inner wall spraying device which can spray uniformly, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a large tube inner wall spraying device with uniform spraying, comprising a support sleeve, a ball screw is rotatably provided at one end of the support sleeve, a screw nut is movably matched with the outer wall of the ball screw, a threaded support ring is provided on the outer wall of the support sleeve, and a plurality of movably connected support frames are provided between the screw nut and the support ring, a rotatably connected support plate is provided at one end of the support sleeve away from the ball screw, a telescopic spray frame is provided on the side of the outer wall of the support plate away from the support sleeve, a servo electric cylinder is vertically provided on one side of the outer wall of the support plate, and the servo electric cylinder is fixedly connected to the outer wall of the telescopic spray frame at one end away from the support plate.

[0007] Furthermore, the telescopic spray rack includes an L-shaped support tube, a slidably connected support sleeve is sleeved on one end of the L-shaped support tube away from the support plate, a spray head is provided on the end of the support sleeve away from the L-shaped support tube, the other end of the L-shaped support tube is fixedly connected to the support plate, and one end of the servo electric cylinder is fixedly connected to the outer wall of the support sleeve.

[0008] Furthermore, a servo motor is provided at one end of the outer wall of the support sleeve, a first gear is sleeved on the outer wall of the servo motor output shaft, and a second gear matching the first gear is provided on the outer wall of the support plate.

[0009] Furthermore, the output shafts of the servo electric cylinder and the servo motor are perpendicular to each other, the nozzle is fixedly connected to the support sleeve via a support tube, and the support tube and the support sleeve are parallel to each other.

[0010] Furthermore, the inner walls of the support sleeve and the ball screw are provided with through holes, and a paint delivery pipe and a pull rope are provided inside the through holes. The paint delivery pipe passes through the L-shaped support pipe and is connected to the nozzle. The paint delivery pipe provided inside the L-shaped support pipe and the support sleeve is a corrugated telescopic pipe.

[0011] Furthermore, the support frame includes two support plates, the centers of the outer walls of the two support plates are rotatably connected through a connecting shaft, one end of the two support plates are rotatably connected to the screw nut and the mounting plate of the outer wall of the support ring respectively, and the other end of the support plate is provided with a rotatably connected roller.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0013] 1. The utility model provides a supporting sleeve, a ball screw, a screw nut, a supporting ring, a supporting frame, a supporting plate and a telescopic spraying frame. The supporting ring limits the screw nut through the supporting frame, thereby ensuring that the screw nut can be adjusted along the linear motion of the ball screw. The linear motion direction of the screw nut can be adjusted by adjusting the rotation direction of the ball screw. During the linear motion of the screw nut along the ball screw, the spacing between the screw nut and the supporting ring can be adjusted, and then the support frame can be adjusted so that the support frame fits the inner wall of the large tube and supports it. The servo electric cylinder can be adjusted to telescope the telescopic spraying frame, and the spacing between the telescopic spraying frame and the inner wall of the large tube can be adjusted. The telescopic spraying frame is more easily applicable to the spraying treatment of the inner wall of the large tube, so that the nozzle of the telescopic spraying frame is closer to the inner wall of the large tube, and the nozzle of the telescopic spraying frame is closer to the inner wall of the large tube, so that the spraying treatment of the telescopic spraying frame during rotary spraying is more uniform.

[0014] 2. In the utility model, the L-shaped support tube supports the spray assembly, so that the nozzle of the telescopic spray frame is perpendicular to the inner wall of the large tube, and the nozzle can spray the inner wall of the large tube more easily. The servo electric cylinder is adjusted to extend and retract, and the servo electric cylinder drives the support sleeve to perform telescopic movement. The support sleeve adjusts the position of the nozzle, so that the distance between the nozzle and the inner wall of the large tube is adjustable, thereby ensuring uniformity and stability of spraying on the inner wall of the large tube; the servo motor drives the first gear to rotate, and the rotation of the first gear drives the second gear to rotate, and the second gear drives the support plate to rotate, thereby realizing the rotation of the telescopic spray frame. The nozzle rotates with the telescopic spray frame to spray the inner wall of the large tube, thereby ensuring uniformity and stability of spraying on the inner wall of the large tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is the front view of the utility model as a whole;

[0017] Figure 2 This utility model Figure 1 The enlarged schematic diagram of point A in the middle;

[0018] Figure 3 It is a front view of another state of the utility model as a whole;

[0019] Figure 4 This utility model Figure 3 A partial cross-sectional schematic diagram of ;

[0020] In the figure: 1. support sleeve; 2. ball screw; 3. screw nut; 4. support ring; 5. support frame; 6. support plate; 7. telescopic spray frame; 8. servo electric cylinder; 9. L-shaped support tube; 10. spray head; 11. servo motor; 12. first gear; 13. second gear; 14. support plate; 15. connecting shaft; 16. mounting plate; 17. roller; 18. support sleeve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4The utility model provides a technical solution: a large tube inner wall spraying device with uniform spraying, comprising a support sleeve 1, one end of the support sleeve 1 is rotatably provided with a ball screw 2, the outer wall of the ball screw 2 is movably matched with a screw nut 3, the outer wall of the support sleeve 1 is sleeved with a threaded support ring 4, a plurality of movably connected support frames 5 are arranged between the screw nut 3 and the support ring 4, the support sleeve 1 is provided with a rotatably connected support plate 6 at one end away from the ball screw 2, a telescopic spray frame 7 is arranged at the side of the outer wall of the support plate 6 away from the support sleeve 1, a servo electric cylinder 8 is vertically arranged on one side of the outer wall of the support plate 6, and the servo electric cylinder 8 is fixedly connected to the outer wall of the telescopic spray frame 7 at one end away from the support plate 6; the telescopic spray frame 7 comprises an L-shaped support tube 9, the L-shaped support tube 9 A slidably connected support sleeve 18 is sleeved on the end away from the support disk 6, and a nozzle 10 is provided on the end of the support sleeve 18 away from the L-shaped support tube 9, and the other end of the L-shaped support tube 9 is fixedly connected to the support disk 6, and one end of the servo electric cylinder 8 is fixedly connected to the outer wall of the support sleeve 18; a servo motor 11 is provided at one end of the outer wall of the support sleeve 1, and a first gear 12 is sleeved on the outer wall of the output shaft of the servo motor 11, and a second gear 13 matching the first gear 12 is provided on the outer wall of the support disk 6; the support frame 5 includes two support plates 14, and the centers of the outer walls of the two support plates 14 are rotatably connected by a connecting shaft 15, and one end of the two support plates 14 are rotatably connected to the mounting plates 16 on the outer walls of the screw nut 3 and the support ring 4 respectively, and the other end of the support plate 14 is provided with a rotatably connected roller 17.

[0023] The output shafts of the servo electric cylinder 8 and the servo motor 11 are perpendicular to each other, ensuring that the servo motor 11 drives the support plate 6 to rotate, the support plate 6 drives the telescopic spray frame 7 to rotate, the servo electric cylinder 8 drives the telescopic spray frame 7 to telescopically move, and the telescopic movement length direction of the telescopic spray frame 7 is perpendicular to the rotation axis of the support plate 6, avoiding mutual interference between the servo electric cylinder 8 and the servo motor 11; the spray head 10 is fixedly connected to the support sleeve 18 through a support tube, and the support tube and the support sleeve 1 are parallel to each other. The support tube supports the spray head 10, and the support tube and the support sleeve 1 are parallel to each other, so that the spray head 10 is perpendicular to the pipe wall, and the spraying treatment effect of the spray head 10 is better.

[0024] The inner walls of the support sleeve 1 and the ball screw 2 are provided with through holes, and a paint delivery pipe and a pull rope are arranged inside the through holes. The through holes provide installation channels and paint delivery pipeline supports for the paint delivery pipe and the pull rope; the paint delivery pipe passes through the L-shaped support pipe 9 to be connected with the nozzle 10, and the paint delivery pipe provides a paint delivery pipeline for the nozzle 10, which is convenient for spraying the paint; the paint delivery pipe arranged inside the L-shaped support pipe 9 and the support sleeve 18 is a corrugated telescopic pipe, which ensures the safety and stability of the paint delivery pipe during the delivery process.

[0025] The working principle of this utility model:

[0026] Refer to the instruction manual Figure 1-Figure 4 The utility model is provided with a supporting sleeve 1, a ball screw 2, a screw nut 3, a supporting ring 4, a supporting frame 5, a supporting plate 6 and a telescopic spraying frame 7. The supporting sleeve 1 rotatably supports the ball screw 2 and rotatably adjusts the ball screw 2. The supporting ring 4 limits the screw nut 3 through the supporting frame 5 so that the screw nut 3 does not rotate, thereby realizing the adjustment of the linear motion of the screw nut 3 along the ball screw 2. The linear motion direction of the screw nut 3 can be adjusted by adjusting the rotation direction of the ball screw 2. During the linear motion of the screw nut 3 along the ball screw 2, the distance between the screw nut 3 and the supporting ring 4 is adjusted, thereby realizing the adjustment of the supporting frame 5, so that the supporting frame 5 is supported in close contact with the inner wall of the large tube, and the servo electric cylinder 8 is adjusted to be telescopic, which can realize The telescopic spray frame 7 is telescopically adjusted to adjust the distance between the telescopic spray frame 7 and the inner wall of the large tube. The telescopic spray frame 7 is more easily suitable for the spraying treatment of the inner wall of the large tube, so that the nozzle 10 of the telescopic spray frame 7 is closer to the inner wall of the large tube, and the nozzle 10 of the telescopic spray frame 7 is closer to the inner wall of the large tube, so that the spraying treatment of the telescopic spray frame 7 during rotation spraying is more uniform; the support ring 4 and the support sleeve 1 are threadedly connected and arranged, and the screw nut 3 can be limited first to prevent the screw nut 3 from rotating and ensure the stability of the linear motion of the screw nut 3. In addition, the position of the support ring 4 can be adjusted, so that the position of the support ring 4 on the support sleeve 1 is adjusted, and then the position of the support frame 5 is adjusted, which can effectively adjust the center of the spraying device, thereby improving the stability of the spraying device;

[0027] The L-shaped support tube 9 supports the spray assembly so that the nozzle 10 of the telescopic spray frame 7 is perpendicular to the inner wall of the large tube, and the nozzle 10 is easier to spray the inner wall of the large tube. The servo electric cylinder 8 is adjusted to extend and retract, and the servo electric cylinder 8 drives the support sleeve 18 to perform telescopic movement. The support sleeve 18 performs telescopic movement along the L-shaped support tube 9. The support sleeve 18 adjusts the position of the nozzle 10 so that the distance between the nozzle 10 and the inner wall of the large tube is adjustable, thereby ensuring uniform and stable spraying of the inner wall of the large tube; the servo motor 11 drives the first gear 12 to rotate, and the first gear 12 and the second gear 13 are meshed with each other. The rotation of the first gear 12 drives the second gear 13 to rotate, and the second gear 13 drives the support plate 6 to rotate, thereby realizing the rotation of the telescopic spray frame 7. The nozzle 10 rotates and sprays the inner wall of the large tube as the telescopic spray frame 7 rotates, ensuring uniformity and stability of spraying the inner wall of the large tube;

[0028] When the distance between the screw nut 3 and the support ring 4 is adjusted, the support frame 5 can be adjusted. When the distance between the screw nut 3 and the support ring 4 is reduced, the distance between the mounting plates 16 at the ends of the two support plates 14 on the support frame 5 is reduced accordingly, thereby reducing the distance between the ends of the support plates 14 close to the ball screw 2. The connecting shaft 15 rotationally supports the centers of the two support plates 14, and the distance between the ends of the support plates 14 away from the ball screw 2 is also reduced, so that the ends of the support plates 14 away from the ball screw 2 expand outward while reducing the distance, and the roller 17 moves with the end of the support plate 14, so that during the adjustment of the support plate 14, the roller 17 can be fitted and pressed against the inner wall of the large tube, so that the spray device can be pressed against the inner wall of large tubes with different inner diameters, thereby enhancing the safety and stability of the spray device inside large tubes with different inner diameters.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for spraying the inner wall of a large pipe evenly, comprising a support sleeve (1), characterized in that: A ball screw (2) is rotatably mounted on one end of the support sleeve (1), a screw nut (3) is movably mounted on the outer wall of the ball screw (2), a threaded support ring (4) is sleeved on the outer wall of the support sleeve (1), a plurality of movably connected support frames (5) are arranged between the screw nut (3) and the support ring (4), a rotatably connected support disc (6) is arranged on the end of the support sleeve (1) away from the ball screw (2), a telescopic spray frame (7) is arranged on the side of the outer wall of the support disc (6) away from the support sleeve (1), a servo electric cylinder (8) is vertically mounted on one side of the outer wall of the support disc (6), and the end of the servo electric cylinder (8) away from the support disc (6) is fixedly connected to the outer wall of the telescopic spray frame (7).

2. A large pipe inner wall spraying device with uniform spraying according to claim 1, characterized in that: The telescopic spraying frame (7) comprises an L-shaped support tube (9), one end of the L-shaped support tube (9) away from the support plate (6) is provided with a slidably connected support sleeve (18), the end of the support sleeve (18) away from the L-shaped support tube (9) is provided with a spray head (10), the other end of the L-shaped support tube (9) is fixedly connected to the support plate (6), and one end of the servo electric cylinder (8) is fixedly connected to the outer wall of the support sleeve (18).

3. A large pipe inner wall spraying device with uniform spraying according to claim 2, characterized in that: A servo motor (11) is provided at one end of the outer wall of the support sleeve (1), a first gear (12) is sleeved on the outer wall of the output shaft of the servo motor (11), and a second gear (13) matching the first gear (12) is provided on the outer wall of the support plate (6).

4. A large pipe inner wall spraying device with uniform spraying according to claim 3, characterized in that: The output shafts of the servo electric cylinder (8) and the servo motor (11) are perpendicular to each other, the nozzle (10) is fixedly connected to the support sleeve (18) via a support tube, and the support tube and the support sleeve (1) are parallel to each other.

5. A large pipe inner wall spraying device with uniform spraying according to claim 2, characterized in that: The inner walls of the support sleeve (1) and the ball screw (2) are provided with through holes, and a paint delivery pipe and a pull rope are provided inside the through holes. The paint delivery pipe passes through the L-shaped support pipe (9) and is connected to the nozzle (10). The paint delivery pipe provided inside the L-shaped support pipe (9) and the support sleeve (18) is a corrugated telescopic pipe.

6. A large pipe inner wall spraying device with uniform spraying according to claim 1, characterized in that: The support frame (5) comprises two support plates (14), the outer wall centers of the two support plates (14) are rotatably connected via a connecting shaft (15), one end of the two support plates (14) is rotatably connected to the screw nut (3) and the mounting plate (16) on the outer wall of the support ring (4), respectively, and the other end of the support plate (14) is provided with a rotatably connected roller (17).

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