Pipeline inner wall spraying equipment

Abstract

The invention belongs to the technical field of pipeline inner wall spraying, and relates to pipeline inner wall spraying equipment which comprises a main body, a positioning mechanism, a batching device, a conveying device, a spray head, a rotating device, a scraping structure and a drying device. The positioning mechanism comprises an upper angle adjusting structure and a lower angle adjusting structure, an electric telescopic rod drives a sliding ring to move, a positioning connecting rod is driven to rotate, and moving wheels are made to adapt to pipelines with different pipe diameters and are stably positioned. After being fully mixed by the batching device, the coating is pumped to the spray head through the conveying device, and the rotating device drives the spray head to rotate and spray. The scraping structure is attached to the inner wall of the pipeline to scrape the coating evenly, coating dripping is avoided, and the drying device dries the coating instantly. The equipment is high in adaptability, uniform in spraying, high in operation efficiency and suitable for protective spraying of the inner walls of various pipelines.

Description

Technical Field

[0001] This invention belongs to the field of spraying equipment technology, and relates to a pipe inner wall spraying equipment. Background Technology

[0002] Pipelines are widely used in petroleum, chemical, and water supply and drainage industries. The inner walls of these pipelines are subject to corrosion and wear due to prolonged contact with the media, thus requiring protective spraying. However, existing pipeline inner wall spraying equipment has the following drawbacks: Positioning and moving mechanisms have poor adaptability and can mostly only operate on pipes with fixed diameters. When changing to pipes of different diameters, it is necessary to change the matching positioning components, which is cumbersome and costly.

[0003] If the paint is not mixed sufficiently, uneven coating thickness may occur after spraying, affecting the protective effect.

[0004] The paint is prone to dripping after spraying, which not only wastes materials but also causes local coating accumulation on the inner wall of the pipe. In addition, the lack of an immediate drying structure results in low coating curing efficiency.

[0005] To address the aforementioned problems, this invention designs a pipe inner wall spraying device that is adaptable to different pipe diameters, provides uniform spraying, and prevents dripping, thereby overcoming the shortcomings of existing technologies. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems and provide a pipe inner wall spraying device.

[0007] To achieve the above objectives, the present invention provides a pipe inner wall spraying device, including a main body and a positioning mechanism disposed on the outer periphery of the main body. The main body has a cavity, in which a dispensing device and a conveying device are disposed in sequence. A spray head is disposed on the upper side of the main body and connected to the conveying device. The main body is also provided with a rotating device for driving the spray head to rotate. The nozzle has a second main body on top, a scraping structure on the outer periphery of the second main body, and a drying device on top of the second main body.

[0008] Furthermore, the positioning mechanism includes a first angle adjustment structure and a second angle adjustment structure, both of which include a fixing ring fixed to the outer periphery of the main body; The sliding ring is located on the outer periphery of the main body and slides in conjunction with the main body. The positioning link is hinged to the fixed ring at one end and has a moving wheel at the other end; The adapter link is hinged at one end to the sliding ring and at the other end to the positioning link.

[0009] Furthermore, the sliding rings of the first angle adjustment structure and the second angle adjustment structure are fixedly connected by a connecting rod; The fixed ring of the first angle adjustment structure is equipped with an electric telescopic rod that is connected to the sliding ring of the first angle adjustment structure. The electric telescopic rod drives the sliding ring to move, thereby retracting and extending the positioning link.

[0010] Furthermore, the main body is equipped with two feed inlets that are connected to the cavity; The batching device includes a partition fixed in a cavity, a stirring motor fixed on the lower side of the partition, and a stirring structure connected to the stirring motor.

[0011] Furthermore, the conveying device includes a conveying pump mounted on the partition plate. The conveying pump is connected to a feed pipe and a delivery pipe. The feed pipe passes through the partition plate and is located below the partition plate, pumping the uniformly mixed paint between the partition plates into the delivery pipe.

[0012] Furthermore, the nozzle has an adapter section that extends from the upper end of the main body into the cavity and is rotatably connected to the feed pipe.

[0013] Furthermore, the rotating device includes a gear fixedly mounted on the outer periphery of the transition section and a rotary motor mounted on the upper end of the main body, with a drive gear meshing with the gear on the output shaft of the rotary motor.

[0014] Furthermore, the scraping structure includes: The second fixing ring is fixed to the outer periphery of the second main body; The second sliding ring is located on the outer periphery of the second main body and slides with the second main body. The scraping connecting rod is hinged at one end to the second fixed ring, and has a scraping area at the other end; The second connecting rod is hinged at one end to the second sliding ring and at the other end to the scraper connecting rod.

[0015] Furthermore, the drying device includes a mounting plate installed on the second main body, a hot air supply device installed on the mounting plate, and an air outlet connected to the hot air supply device, with multiple air outlets provided on the air outlet.

[0016] The beneficial effects of this invention are as follows: The pipe inner wall spraying equipment of the present invention can realize the angle adjustment of the positioning linkage through the positioning mechanism driven by the electric telescopic rod, adapt to the inner wall spraying of pipes with different diameters, without the need to replace the positioning components, thus reducing operating costs.

[0017] The pipe inner wall spraying equipment of the present invention, after the paint is fully mixed by the mixing device, is evenly sprayed by a rotating nozzle, and excess paint is scraped off by a scraping structure, effectively avoiding problems such as uneven coating thickness and paint dripping. After scraping, hot air drying can be performed immediately to accelerate coating curing, shorten the overall spraying operation time, and improve construction efficiency. Attached Figure Description

[0018] Figure 1 A schematic perspective view of a pipe inner wall spraying device according to an embodiment of the present invention; Figure 2 This schematic diagram shows a front view of a pipe inner wall spraying device according to one embodiment of the present invention; Figure 3 This schematic diagram illustrates a pipe inner wall spraying device according to an embodiment of the present invention without the scraping structure and drying device installed. Figure 4 illustrative representation Figure 3 Enlarged view of section A in the middle; Figure 5 illustrative representation Figure 3 Top view of the structure shown; Figure 6 illustrative representation Figure 5 Sectional view of AA.

[0019] The meanings of the numbers in the attached diagram are as follows: 1. Main body; 2. Positioning structure; 3. Cavity; 4. Feeding device; 5. Conveying device; 6. Nozzle; 7. Rotating device; 8. Second main body; 9. Scraping structure; 10. Drying device; 21. First angle adjustment structure; 22. Second angle adjustment structure; 211. Fixing ring; 212. Sliding ring; 213. Positioning linkage; 214. Moving wheel; 215. Adapter linkage; 216. Connecting rod; 217. Electric telescopic rod; 11. Feed inlet; 41. Baffle plate; 42. Agitator motor; 43. Agitator structure; 51. Conveying pump; 52. Feed pipe; 53. Conveying pipe; 61. Transfer section; 71. Gear; 72. Rotary motor; 73. Drive gear; 91. Second fixed ring; 92. Second sliding ring; 93. Scraper connecting rod; 94. Second transfer connecting rod; 101. Mounting plate; 102. Hot air supply device; 103. Air outlet; 104. Air outlet. Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described in detail here, but the embodiments of the present invention are not limited to the following embodiments.

[0022] Combination Figures 1-6As shown, the present invention provides a pipe inner wall spraying device, including a main body 1, which is the core load-bearing component of the device. A cavity 3 is opened inside the main body 1, and a feeding device 4 and a conveying device 5 are fixedly installed in the cavity 3 in sequence along the vertical direction.

[0023] A nozzle 6 is fixedly installed on the upper side of the main body 1. A transition section 61 is integrally formed at the bottom of the nozzle 6. The transition section 61 extends from the upper end of the main body 1 into the cavity 3 and is rotatably connected to the conveying pipe 53 of the conveying device 5 to achieve stable delivery of the coating.

[0024] In order to drive the nozzle 6 to rotate, a rotating device 7 is fixedly installed on the upper end face of the main body 1. The rotating device 7 consists of a gear 71 and a rotary motor 72. The gear 71 is fixedly sleeved on the outer periphery of the transition section 61. A drive gear 73 is installed on the output shaft of the rotary motor 72. The drive gear 73 meshes with the gear 71 and drives the nozzle 6 to rotate through gear transmission.

[0025] The top of the nozzle 6 is fixedly connected to the second body 8, the outer periphery of the second body 8 is fitted with a scraping structure 9, and the top of the second body 8 is fixedly installed with a drying device 10. The scraping structure 9 and the drying device 10 are distributed up and down along the axial direction of the second body 8.

[0026] Furthermore, a positioning mechanism 2 is fixedly installed on the outer periphery of the main body 1. The positioning mechanism 2 consists of a first angle adjustment structure 21 and a second angle adjustment structure 22, and the components of the two structures are completely identical.

[0027] Each angle adjustment structure includes a fixed ring 211, a sliding ring 212, a positioning link 213, and a transition link 215. The fixed ring 211 is welded and fixed to the outer periphery of the main body 1, and the sliding ring 212 is sleeved on the outer periphery of the main body 1 and slides in cooperation with the main body 1.

[0028] One end of the positioning link 213 is hinged to the fixed ring 211, and the other end is equipped with a moving wheel 214; one end of the connecting link 215 is hinged to the sliding ring 212, and the other end is hinged to the rod body of the positioning link 213. The sliding ring 212 of the first angle adjustment structure 21 and the sliding ring 212 of the second angle adjustment structure 22 are fixedly connected by a connecting rod 216 to achieve synchronous movement of the two sliding rings 212. At the same time, an electric telescopic rod 217 is fixedly installed on the fixed ring 211 of the first angle adjustment structure 21. The telescopic end of the electric telescopic rod 217 is fixedly connected to the sliding ring 212 of the first angle adjustment structure 21, and the sliding ring 212 is moved by the telescopic movement of the electric telescopic rod 217.

[0029] Furthermore, the side wall of the main body 1 has two feed inlets 11, which are connected to the cavity 3 and are used to convey the coating components into the mixing device 4. The mixing device 4 includes a partition 41, a stirring motor 42, and a stirring structure 43. The partition 41 is horizontally fixed in the cavity 3, dividing the cavity 3 into upper and lower parts. The stirring motor 42 is fixed on the lower side of the partition 41. The stirring structure 43 is fixedly connected to the output shaft of the stirring motor 42 and is located in the cavity below the partition 41.

[0030] The conveying device 5 includes a conveying pump 51, a feed pipe 52, and a conveying pipe 53. The conveying pump 51 is fixedly installed on the upper side of the partition 41. One end of the feed pipe 52 is connected to the feed end of the conveying pump 51, and the other end extends through the partition 41 to the lower part of the partition 41 for drawing out the uniformly mixed paint. One end of the conveying pipe 53 is connected to the discharge end of the conveying pump 51, and the other end is rotatably connected to the adapter section 61 of the nozzle 6, realizing the stable conveying of paint from the mixing device 4 to the nozzle 6.

[0031] Furthermore, the scraping structure 9 includes a second fixed ring 91, a second sliding ring 92, a scraping connecting rod 93, and a second transition connecting rod 94. The second fixed ring 91 is welded and fixed to the outer periphery of the second body 8, and the second sliding ring 92 is sleeved on the outer periphery of the second body 8 and slides in cooperation with the second body 8.

[0032] One end of the scraping connecting rod 93 is hinged to the second fixed ring 91, and the other end is provided with a scraping area. One end of the second connecting rod 94 is hinged to the second sliding ring 92, and the other end is hinged to the rod body of the scraping connecting rod 93. By moving the position of the second sliding ring 92, the opening angle of the scraping connecting rod 93 can be adjusted so that the scraping area fits the inner wall of the pipe with different diameters.

[0033] Furthermore, the drying device 10 includes a mounting plate 101, a hot air supply device 102, and an air outlet 103. The mounting plate 101 is horizontally fixed to the top of the second main body 8. The hot air supply device 102 is fixedly installed on the mounting plate 101. The air outlet 103 is connected to the air outlet of the hot air supply device 102. Multiple air outlets 104 are provided on the circumferential sidewall of the air outlet 103, which can blow hot air evenly onto the coating on the inner wall of the pipe to achieve rapid drying and curing of the coating.

[0034] In actual use, the pipe inner wall spraying equipment of this embodiment first adjusts the opening angle of the positioning connecting rod 213 by the electric telescopic rod 217, so that the moving wheel 214 is pressed against the inner wall of the pipe, and the equipment is coaxially positioned in the pipe. Then, the paint components are sent into the cavity 3 through the feed port 11, and after being fully mixed by the stirring structure 43, they are pumped to the nozzle 6 by the delivery pump 51. The rotary motor 72 is started to drive the nozzle 6 to rotate, and the paint is evenly sprayed onto the inner wall of the pipe. At the same time, the scraping connecting rod 93 of the scraping structure 9 is adjusted so that the scraping area is in contact with the inner wall of the pipe, scraping off the excess paint on the inner wall and preventing paint dripping. Finally, the hot air supply device 102 is started, and hot air is blown out through the air outlet 104 to dry and cure the evenly scraped coating, completing the spraying operation of the entire pipe inner wall.

[0035] The above description is merely one embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pipe inner wall spraying device, comprising a main body (1) and a positioning mechanism (2) disposed on the outer periphery of the main body (1), characterized in that, The main body (1) has a cavity (3) inside, and a feeding device (4) and a conveying device (5) are arranged in sequence in the cavity (3). A nozzle (6) is provided on the upper side of the main body (1) and connected to the conveying device (5). A rotating device (7) for driving the nozzle (6) to rotate is also provided on the main body (1). The nozzle (6) has a second body (8) on top, a scraping structure (9) on the outer periphery of the second body (8), and a drying device (10) on top of the second body (8).

2. The pipe inner wall spraying equipment according to claim 1, characterized in that, The positioning mechanism (2) includes a first angle adjustment structure (21) and a second angle adjustment structure (22). Both the first angle adjustment structure (21) and the second angle adjustment structure (22) include a fixing ring (211) fixed to the outer periphery of the main body (1). The sliding ring (212) is located on the outer periphery of the main body (1) and slides with the main body (1); The positioning link (213) is hinged at one end to the fixed ring (211) and has a moving wheel (214) at the other end. The adapter link (215) is hinged at one end to the sliding ring (212) and at the other end to the positioning link (213).

3. The pipe inner wall spraying equipment according to claim 2, characterized in that, The sliding ring (212) of the first angle adjustment structure (21) and the sliding ring (212) of the second angle adjustment structure (22) are fixedly connected by a connecting rod (216); The fixed ring (211) of the first angle adjustment structure (21) is provided with an electric telescopic rod (217) which is connected to the sliding ring (212) of the first angle adjustment structure (21); The electric telescopic rod (217) drives the sliding ring (212) to move, thereby realizing the contraction and expansion of the positioning link (213).

4. The pipe inner wall spraying equipment according to claim 3, characterized in that, The main body (1) is provided with two feed ports (11) that are connected to the cavity (3); The batching device (4) includes a partition (41) fixed in the cavity (3), and a stirring motor (42) is fixedly provided on the lower side of the partition (41). The stirring motor (42) is connected to a stirring structure (43).

5. The pipe inner wall spraying equipment according to claim 4, characterized in that, The conveying device (5) includes a conveying pump (51) installed on a partition (41). The conveying pump (51) is connected to a feed pipe (52) and a conveying pipe (53). The feed pipe (52) passes through the partition (41) and is located below the partition (41), pumping the paint that is mixed evenly between the partitions (41) into the conveying pipe (53).

6. The pipe inner wall spraying equipment according to claim 5, characterized in that, The nozzle (6) has a transition section (61) which extends from the upper end of the main body (1) into the cavity (3) and is rotatably connected to the feed pipe (53).

7. The pipe inner wall spraying equipment according to claim 6, characterized in that, The rotating device (7) includes a gear (71) fixedly installed on the outer periphery of the transition section (61) and a rotary motor (72) installed on the upper end of the main body (1). A drive gear (73) is installed on the output shaft of the rotary motor (72) and meshes with the gear (71).

8. The pipe inner wall spraying equipment according to claim 7, characterized in that, The scraping structure (9) includes: The second fixing ring (91) is fixed to the outer periphery of the second body (8); The second sliding ring (92) is located on the outer periphery of the second body (8) and slides with the second body (8); The scraping connecting rod (93) is hinged at one end to the second fixed ring (91) and has a scraping area at the other end; The second connecting rod (94) is hinged at one end to the second sliding ring (92) and at the other end to the scraper connecting rod (93).

9. The pipe inner wall spraying equipment according to claim 8, characterized in that, The drying device (10) includes a mounting plate (101) mounted on the second body (8), a hot air supply device (102) mounted on the mounting plate (101), and an air outlet (103) connected to the hot air supply device (102). The air outlet (103) is provided with multiple air outlets (104).

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