Spray gun for spraying water-based paint on inner wall of nodular cast iron pipe

Abstract

The utility model discloses a spray gun for spraying water-based paint on the inner wall of a nodular cast iron pipe, and relates to the technical field of electrical equipment. The spray gun for spraying the water-based paint on the inner wall of the nodular cast iron pipe comprises a spraying part used for spraying the water-based paint on the inner wall of the pipeline, and the spraying part comprises a spraying ring and a feeding ring; the smearing part is located behind the spraying part and comprises a rotating column, a first telescopic part and a smearing arc plate, and the smearing arc plate is connected with the rotating column through the first telescopic part; one end of the first telescopic part is connected with the rotating column, and the other end of the first telescopic part is connected with the smearing arc plate; and the connecting column is located between the spraying part and the smearing part, one end of the connecting column is connected with the spraying part, and a stepping motor is arranged in the connecting column. Water-based paint on the inner wall of the pipeline can be evenly smeared through the smearing part, and when the inner wall of the pipeline is sprayed, the situation that sundries on the inner wall of the pipeline affect the spraying quality is avoided through the arrangement of the cleaning part.

Description

Technical Field

[0001] The utility model relates to the field of coating equipment, and in particular to a spray gun for spraying water-based coating on the inner wall of a ductile iron pipe. Background Art

[0002] Ductile iron pipe is a pipe made of ductile iron material with high strength, high toughness and good corrosion resistance. In order to enhance the protective performance of its inner wall, it is often necessary to spray water-based paint on its inner wall. After spraying water-based paint, the corrosion resistance of its inner wall will be increased, extending the service life of the pipe.

[0003] However, because water-based paint has a certain fluidity, after spraying the water-based paint on the inner wall of the pipe, the water-based paint will flow, causing the thickness of the paint layer on the inner wall of the pipe to be uneven, so that the thin area may not provide sufficient protection, which is prone to corrosion, rust and other problems. The existing spray guns for spraying water-based paint on the inner wall of ductile iron pipes usually do not apply water-based paint again after spraying water-based paint on the inner wall of the pipe. Utility Model Content

[0004] The utility model provides a spray gun for spraying water-based paint on the inner wall of a ductile iron pipe. After spraying the water-based paint, the paint is evenly spread to make it fit more closely on the inner wall of the pipe.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solutions:

[0006] A spray gun for spraying water-based paint on the inner wall of a ductile iron pipe, comprising:

[0007] The spraying part includes a spraying ring and a feeding ring; the smearing part is located behind the spraying part, and includes a rotating column, a first telescopic part and a smearing arc plate, wherein the smearing arc plate is connected to the rotating column through the first telescopic part; the first telescopic part is connected to the rotating column at one end and to the smearing arc plate at the other end;

[0008] The connecting column is located between the spraying part and the coating part, one end of which is connected to the spraying part. A stepping motor is provided in the connecting column, and the output end of the stepping motor is connected to the rotating column.

[0009] In a further embodiment, the cleaning portion is located in front of the spraying portion and is connected to the spraying ring.

[0010] In a further embodiment, the rotating drum is connected to the spray ring; the second telescopic rod is located outside the rotating drum and one end is connected to the rotating drum; the cleaning arc block is located outside the rotating drum and connected to the other end of the second telescopic rod; a spring is provided on the second telescopic rod.

[0011] In a further embodiment, the spray ring is rotatably connected to the feed ring, wherein the feed ring is connected to a paint delivery pipe, and the feed ring is fixedly connected to the connecting column.

[0012] In a further embodiment, a first connecting rod is provided between the rotating column and the spraying ring; one end of the first connecting rod is connected to the rotating column, and the other end is connected to the spraying ring.

[0013] In a further embodiment, a second connecting rod is provided between the spraying ring and the rotating drum; one end of the second connecting rod is connected to the spraying ring, and the other end is connected to the rotating drum.

[0014] In a further embodiment, the first supporting portion is located between the spraying portion and the cleaning portion, and the second connecting rod is located inside the supporting portion.

[0015] In a further embodiment, the support part is provided with a sleeve, a support rod, a first push rod and a pulley, and the support rod is rotatably connected to the sleeve and the pulley; the support rod is connected to the sleeve at one end and the pulley at the other end; the first push rod is rotatably connected to the sleeve and the support rod; the first push rod is connected to the sleeve at one end and the support rod at the other end.

[0016] In a further embodiment, the second support portion is located in front of the cleaning portion and is fixedly connected to the feed ring.

[0017] In a further embodiment, a second push rod and a roller are provided on the second supporting portion; one end of the second push rod is connected to the second supporting portion, and the other end is connected to the roller.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The utility model is provided with a smearing part, which can further evenly spread the paint after spraying the water-based paint. This can not only enhance the adhesion of the paint, make it fit more closely on the inner wall of the pipe, and improve the stability and durability of the paint layer; it can also effectively fill the tiny holes or flaws that may appear during the spraying process, ensure the integrity and consistency of the paint layer, and thus improve the protective performance of the pipeline; at the same time, through the smearing operation, the thickness of the paint layer can also be increased, providing more comprehensive protection and extending the service life of the pipeline.

[0020] 2. The utility model is provided with a cleaning part, which can effectively remove impurities, dirt and grease on the inner wall of the pipe, so that the inner wall of the pipe can be kept clean. This not only enhances the adhesion between the water-based paint and the inner wall of the pipe, improves the quality and stability of the paint layer, but also ensures the uniformity of the paint layer and avoids uneven thickness. In addition, cleaning the inner wall of the pipe can also reduce the occurrence of defects in the paint layer, improve the corrosion resistance of the pipe, and extend its service life. At the same time, the setting of the cleaning part also helps to improve the efficiency and quality of the spraying work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the present utility model.

[0022] Figure 2 for Figure 1 Schematic diagram of the main cross-sectional structure.

[0023] Figure 3 for Figure 1 Schematic diagram of the left sectional structure.

[0024] Figure 4 It is a structural diagram of the spraying unit.

[0025] The accompanying drawings are marked as follows: 1. Spraying part; 101. Spraying ring; 102. Feeding ring; 2. Coating part; 201. Rotating column; 202. First telescopic part; 203. Coating arc plate; 3. Cleaning part; 301. Rotating drum; 302. Second telescopic rod; 303. Cleaning arc block; 4. First supporting part; 401. Sleeve; 402. Support rod; 403. First push rod; 404. Pulley; 5. Connecting column; 6. Stepping motor; 7. Paint delivery pipe; 8. Spring; 9. Second supporting part; 901. Second push rod; 902. Roller; 10. First connecting rod; 11. Second connecting rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of this practical embodiment clearer, the technical solutions in this practical embodiment are clearly and completely described. Obviously, the described embodiment is only a part of the embodiments of this practical embodiment, not all of the embodiments.

[0027] The above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Reference Figure 1-4 A spray gun for spraying water-based paint on the inner wall of a ductile iron pipe comprises: a spraying part 1 for spraying water-based paint on the inner wall of the pipe,

[0029] The spraying part 1 includes a spraying ring 101 and a feeding ring 102;

[0030] The coating part 2 is located behind the spraying part 1;

[0031] The smearing part 2 includes a rotating column 201, a first telescopic part 202 and a smearing arc plate 203, wherein the smearing arc plate 203 is connected to the rotating column 201 through the first telescopic part 202; the first telescopic part 202 is connected to the rotating column 201 at one end and to the smearing arc plate 203 at the other end;

[0032] The connecting column 5 is located between the spraying part 1 and the coating part 2 , and one end thereof is connected to the spraying part 1 . A stepping motor 6 is provided in the connecting column 5 , and an output end of the stepping motor 6 is connected to the rotating column 201 .

[0033] The setting of the smearing part 2 will smear the water-based paint sprayed on the inner wall of the pipe by the spraying part 1, so that the water-based paint is evenly distributed on the inner wall of the pipe, thereby avoiding uneven distribution of the water-based paint on the inner wall of the pipe.

[0034] The cleaning part 3 is located in front of the spraying part 1 and is connected to the spraying ring 101 .

[0035] The cleaning part 3 can clean the dust and other impurities on the inner wall of the pipe to prevent the dust and other impurities from affecting the adhesion of the water-based paint to the inner wall of the pipe.

[0036] The rotating drum 301 is connected to the spray ring 101; the second telescopic rod 302 is located outside the rotating drum 301 and is connected to the rotating drum 301 at one end; the cleaning arc block 303 is located outside the rotating drum 301 and is connected to the other end of the second telescopic rod 302; a spring 8 is provided on the second telescopic rod 302.

[0037] The arrangement of the spring 8 can ensure that the cleaning arc block 303 is always in contact with the inner wall of the pipeline, thereby achieving cleaning of the inner wall of the pipeline.

[0038] The spray ring 101 is rotatably connected to the feed ring 102 , wherein the feed ring 102 is connected to the paint delivery pipe 7 , and the feed ring 102 is fixedly connected to the connecting column 5 .

[0039] When the spraying unit 1 is used to spray the water-based paint on the inner wall of the pipe, the spraying ring 101 will rotate along with the rotating column 201, so that the water-based paint is evenly sprayed on the inner wall of the pipe.

[0040] A first connecting rod 10 is provided between the rotating column 201 and the spraying ring 101 ; one end of the first connecting rod 10 is connected to the rotating column 201 , and the other end is connected to the spraying ring 101 .

[0041] The first connecting rod 10 can connect the rotating column 201 with the spray ring 101 , thereby enabling the rotating column 201 to drive the spray ring 101 to rotate.

[0042] A second connecting rod 11 is provided between the spraying ring 101 and the rotating drum 301 ; one end of the second connecting rod 11 is connected to the spraying ring 101 , and the other end is connected to the rotating drum 301 .

[0043] The second connecting rod 11 connects the spray ring 101 with the rotating drum 301 , so that the rotating column 201 indirectly drives the rotating drum 301 to rotate, thereby enabling the cleaning arc block 303 to clean the inner wall of the pipeline.

[0044] The first supporting portion 4 is located between the spraying portion 1 and the cleaning portion 3 , and the second connecting rod 11 is located inside the supporting portion.

[0045] The provision of the first support portion 4 will support the entire device in the center of the pipeline.

[0046] The first supporting part is provided with a sleeve 401, a support rod 402, a first push rod 403 and a pulley 404, and the support rod 402 is rotatably connected to the sleeve 401 and the pulley 404; the support rod 402 is connected to the sleeve 401 at one end and to the pulley 404 at the other end; the first push rod 403 is rotatably connected to the sleeve 401 and the support rod 402; the first push rod 403 is connected to the sleeve 401 at one end and to the support rod 402 at the other end.

[0047] Through the mutual cooperation between the various structures on the first support part 4, the device as a whole will be fixed inside the pipe, and through the mutual cooperation between the first push rod 403 and the support rod 402, the angle between the support rod 402 and the sleeve 401 is controlled by the first push rod 403, so that the device can be fixed inside pipes with different diameters.

[0048] The second supporting portion 9 is located in front of the cleaning portion 3 and is fixedly connected to the feeding ring 102 .

[0049] The second supporting portion 9 is provided to fix the positions of the connecting column 5 and the feed ring 102 .

[0050] The second support portion 9 is provided with a second push rod 901 and a roller 902 ; the second push rod 901 is connected to the second support portion 9 at one end and to the roller 902 at the other end.

[0051] The mutual cooperation between the various parts on the second supporting portion 9 can prevent the connecting column 5 from rotating when the device is working.

[0052] During use, the device is placed at one end of the pipeline, and the device is fixed and started through the mutual cooperation between the various parts on the first support part 4. After starting, the stepper motor 6 will drive the cleaning part 3, the spray ring 101 and the coating part 2 to rotate through the mutual cooperation between the rotating column 201, the first connecting rod 10 and the second connecting rod 11; then the worker pulls the device at the other end of the pipeline. When pulling, the cleaning arc block 303 on the cleaning part 3 will clean the inner wall of the pipeline, and then the water-based paint is sprayed on the cleaned inner wall of the pipeline through the spraying part 1. After the spraying is completed, the water-based paint on the inner wall of the pipeline will be coated through the mutual cooperation between the various parts on the coating part 2, so that the water-based paint is evenly distributed on the inside of the pipeline.

[0053] In summary, the present invention provides a smearing portion, which can further evenly smear the paint after spraying the water-based paint, which can not only enhance the adhesion of the paint, making it fit more closely on the inner wall of the pipe, but also improve the stability and durability of the paint layer;

[0054] It can also effectively fill in the tiny holes or flaws that may appear during the spraying process, ensuring the integrity and consistency of the paint layer, thereby improving the protective performance of the pipeline; at the same time, through the application operation, it can also increase the thickness of the paint layer, provide more comprehensive protection, and extend the service life of the pipeline; by setting up a cleaning part, it can effectively remove impurities, dirt and grease on the inner wall of the pipeline, so that the inner wall of the pipeline can be kept clean, which can not only enhance the adhesion of water-based paint to the inner wall of the pipeline, improve the quality and stability of the paint layer, but also ensure the uniformity of the paint layer to avoid uneven thickness;

[0055] In addition, cleaning the inner wall of the pipeline can reduce the occurrence of defects in the coating layer, improve the corrosion resistance of the pipeline, and extend its service life; at the same time, the setting of the cleaning department can also help improve the efficiency and quality of the spraying work.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A spray gun for spraying water-based paint on the inner wall of ductile iron pipe, characterized in that: include: A spraying section (1) comprising a spraying ring (101) and a feeding ring (102); The smearing part (2) is located behind the spraying part (1), and the smearing part (2) comprises a rotating column (201), a first telescopic part (202) and a smearing arc plate (203), wherein the smearing arc plate (203) is connected to the rotating column (201) through the first telescopic part (202); A first telescopic portion (202), one end of which is connected to the rotating column (201), and the other end of which is connected to the coating arc plate (203); The connecting column (5) is located between the spraying part (1) and the smearing part (2), and one end of the connecting column is connected to the spraying part (1). A stepping motor (6) is provided in the connecting column (5), and the output end of the stepping motor (6) is connected to the rotating column (201).

2. A spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 1, characterized in that: Also includes: The cleaning part (3) is located in front of the spraying part (1) and is connected to the spraying ring (101).

3. A spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 2, characterized in that: Also includes: A rotating drum (301) is connected to the spraying ring (101); A second telescopic rod (302) is located outside the rotating drum (301) and one end of the second telescopic rod is connected to the rotating drum (301); A cleaning arc block (303) is located outside the rotating drum (301) and is connected to the other end of the second telescopic rod (302); A spring (8) is provided on the second telescopic rod (302).

4. The spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 1, characterized in that: The spraying ring (101) is rotatably connected to the feeding ring (102), wherein the feeding ring (102) is connected to a paint delivery pipe (7), and the feeding ring (102) is fixedly connected to the connecting column (5).

5. The spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 4, characterized in that: A first connecting rod (10) is provided between the rotating column (201) and the spraying ring (101); One end of the first connecting rod (10) is connected to the rotating column (201), and the other end is connected to the spraying ring (101).

6. The spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 3, characterized in that: A second connecting rod (11) is provided between the spraying ring (101) and the rotating drum (301); The second connecting rod (11) has one end connected to the spray ring (101) and the other end connected to the rotating drum (301).

7. A spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 6, characterized in that: Also includes: The first supporting portion (4) is located between the spraying portion (1) and the cleaning portion (3), and the second connecting rod (11) is located inside the first supporting portion (4).

8. The spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 7, characterized in that: The first support portion (4) is provided with a sleeve (401), a support rod (402), a first push rod (403) and a pulley (404), and the support rod (402) is rotatably connected to the sleeve (401) and the pulley (404); A support rod (402), one end of which is connected to the sleeve (401) and the other end of which is connected to the pulley (404); The first push rod (403) is rotatably connected to the sleeve (401) and the support rod (402); One end of the first push rod (403) is connected to the sleeve (401), and the other end is connected to the support rod (402).

9. The spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 1, characterized in that: Also includes: The second supporting portion (9) is located in front of the cleaning portion (3) and is fixedly connected to the feeding ring (102).

10. The spray gun for spraying water-based paint on the inner wall of a ductile iron pipe according to claim 9, characterized in that: The second support portion (9) is provided with a second push rod (901) and a roller (902); The second push rod (901) has one end connected to the second support portion (9) and the other end connected to the roller (902).

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