A handheld spray painting instrument for convenient pipeline spraying

Abstract

This invention provides a convenient handheld spray painting instrument for pipes, solving the problems of time-consuming, labor-intensive, and inefficient manual painting of pipes. The invention includes an electric spray gun with a liquid extraction tube at its bottom and a connecting tube sleeved around the outside of the extraction tube. The connecting tube is detachably connected to the mouth of a paint can, and the extraction tube is inserted into the paint can. A ring-shaped spray tube is detachably and sealed to the outlet of the electric spray gun. The side of the ring-shaped spray tube away from the electric spray gun has a clearance notch for the entry and exit of the working pipe. Several spray holes are spaced circumferentially on the inner wall of the ring-shaped spray tube, facing the center of the ring-shaped spray tube. In use, the ring-shaped spray tube can be quickly moved to the outside of any working pipe, and then moved along the length of the working pipe to the work site. With the assistance of the electric spray gun, the painting operation is completed quickly.

Description

Technical Field

[0001] This utility model relates to the field of spray painting technology, and in particular to a handheld spray painting instrument for convenient pipeline spraying. Background Technology

[0002] In modern construction, the protective steel pipes around foundation pits, the protective steel pipes at edge openings, and the steel pipe scaffolding with couplers all require the application of alternating red and white / black and yellow stripes of paint to serve as a warning. As modern construction sites place increasingly higher demands on safety and standardized practices, the appearance requirements for these protective steel pipes around foundation pits, the protective steel pipes at edge openings, and the steel pipe scaffolding with couplers are becoming increasingly stringent. Very strict requirements are placed on the length, spacing, and vertical alignment of the alternating stripes of paint, which greatly promotes the standardization of construction sites.

[0003] Currently, there are the following problems when painting pipelines: (1) When using manual brushing to apply ribbon paint, it is necessary to manually brush around the steel pipe during the painting process, which is time-consuming, labor-intensive, and has low efficiency. Utility Model Content

[0004] In order to solve the problems of time-consuming, labor-intensive and inefficient manual painting of pipes in the prior art, this utility model proposes a handheld spray painting instrument for convenient pipe painting.

[0005] The technical solution of this utility model is: a handheld spray painting instrument for convenient pipeline spraying, including an electric spray gun, the bottom of the electric spray gun is provided with a liquid extraction tube and a connecting tube head wrapped around the outside of the liquid extraction tube, the connecting tube head is detachably connected to the bottle mouth of the paint can, and the liquid extraction tube is inserted into the paint can.

[0006] The outlet of the electric spray gun is detachably and sealed with an annular spray tube. The outlet of the electric spray gun is connected to the interior of the annular spray tube. There is a clearance notch on the side of the annular spray tube away from the electric spray gun. The clearance notch is used for the entry and exit of the working pipe. Several spray holes are opened on the inner wall of the annular spray tube at intervals along its circumference. The spray holes face the center of the annular spray tube.

[0007] Preferably, a spray head is provided at the paint spray hole, and the spray direction of the spray head is towards the center of the annular paint spray tube.

[0008] Preferably, both ends of the annular spray nozzle are open structures, and both ends of the annular spray nozzle are provided with removable caps to seal the openings at both ends of the annular spray nozzle.

[0009] Preferably, the bottom of the paint can has an open structure, and the bottom of the paint can is sealed with a removable bottom cover.

[0010] Preferably, a tee is detachably connected to the liquid outlet of the electric spray gun. One port of the tee, away from the electric spray gun, is detachably connected to the annular paint spray tube, and the remaining port of the tee is detachably and sealed to one end of the return pipe.

[0011] The bottom cover is equipped with a reflux pipe connector that communicates with its inner space. The end of the reflux pipe connector located outside the bottom cover is detachably and sealed to the other end of the reflux pipe.

[0012] Preferably, a check valve is provided on the return pipe connector to prevent liquid inside the bottom cover from flowing back into the return pipe.

[0013] Preferably, the bottom cover includes an arc-shaped bottom and an annular side plate fixedly disposed on the top of the arc-shaped bottom. The annular side plate is detachably and sealingly fitted onto the lower end of the paint can, and the reflux pipe connector is fixedly disposed on the annular side plate.

[0014] Preferably, a vertically arranged shaft is fixed on the bottom of the arc-shaped cover, and a stirring blade is rotatably mounted on the shaft. The stirring blade is located at the liquid outlet of the reflux pipe connector.

[0015] The advantages of this invention are as follows: When in use, the annular spray nozzle can not only move from both ends of the working pipe to any position on the pipe for spraying, but also, even when perpendicular pipes are installed at both ends of the working pipe to block its movement, the annular spray nozzle can be fitted onto the outside of the working pipe from any position through a designated clearance slot, and then moved along the length of the working pipe to the work site. During the ribbon paint spraying process, by horizontally rotating the annular spray nozzle at a certain angle, a complete circumference of the working pipe can be sprayed to form a ribbon paint, saving time and labor, and increasing work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of the handheld spray painting instrument in Example 1;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the annular spray nozzle in the image;

[0019] Figure 3 for Figure 1 A schematic diagram of the bottom cover structure;

[0020] In the diagram, 1. Electric spray gun, 101. Connecting pipe head, 102. Liquid extraction pipe, 2. Paint tank, 3. Bottom cover, 4. T-joint, 5. Annular spray pipe, 501. Spray pipe connector, 6. Sealing cap, 7. Spray head, 8. Working pipe, 9. Return pipe, 10. Return pipe connector, 11. Check valve, 12. Shaft, 13. Stirring blade. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: A handheld spray painting instrument for convenient pipe spraying, such as Figure 1 As shown, the device includes an electric spray gun 1. The bottom of the electric spray gun 1 is provided with a liquid extraction tube 101 and a connecting tube head 101 that is sleeved around the outside of the liquid extraction tube 101. The connecting tube head 101 is threadedly connected to the mouth of the paint can 2. The liquid extraction tube 101 is inserted into the paint can 2.

[0023] To prevent paint from settling and adhering to the bottom of paint can 2, making it difficult to clean, such as... Figure 1 As shown, the bottom of paint can 2 has an open structure, and a removable bottom cover 3 is fitted to the sealed bottom of paint can 2. Specifically, as... Figure 3 As shown, the bottom cover 3 includes an arc-shaped bottom cover 301 and an annular side plate 302 fixedly disposed on the top of the arc-shaped bottom cover 301. The annular side plate 302 is detachably and sealingly fitted onto the lower end of the paint can 2. Specifically, in this embodiment, the inner side of the annular side plate 302 is connected to the outer side of the lower end of the paint can 2 by a thread.

[0024] The outlet of the electric spray gun 1 is detachably and sealed with a ring-shaped paint spray tube 5, specifically, as follows: Figure 2 As shown, a paint tube connector 501 is fixedly provided on the annular paint tube 5 and communicates with its interior. A tee 4 is threadedly connected to the outlet of the electric spray gun 1. One end of the tee 4 away from the electric spray gun 1 is threadedly connected to the paint tube connector 501. The outlet of the electric spray gun 1, the tee 4, and the interior of the annular paint tube 5 are interconnected.

[0025] To avoid the inability to perform painting operations on the working pipe 8, which has steel pipes installed perpendicularly at both ends, in this embodiment, as follows: Figure 1 and Figure 2 As shown, the annular spray pipe 5 has a clearance notch on the side away from the electric spray gun 1, which is used to allow the working pipe 8 to enter and exit.

[0026] The inner wall of the annular spray pipe 5 has several spray holes spaced circumferentially thereon, with the spray holes facing the center of the annular spray pipe 5. In order to improve the paint coverage area sprayed from the spray holes during painting, in this embodiment, a spray head 7 is provided at the spray hole, and the spray direction of the spray head 7 is facing the center of the annular spray pipe 5.

[0027] In order to quickly remove the paint remaining inside the annular spray nozzle 5 after use, such as Figure 2 As shown, both ends of the annular spray pipe 5 are open structures, and both ends of the annular spray pipe 5 are provided with removable caps 6 connected by threads. The caps 6 are used to seal the openings at both ends of the annular spray pipe 5.

[0028] To prevent paint from settling in the paint can 2 during spraying and to prevent uneven paint concentration between the upper and lower liquid levels, in this embodiment, the remaining port of the tee 4 is threaded and sealed to one end of the return pipe 9, and the other end of the return pipe 9 is threaded and sealed to one end of the return pipe connector 10. The other end of the return pipe connector 10 is fixedly installed on the annular side plate 302 and communicates with the inner space of the bottom cover 3.

[0029] The return pipe connector 10 is also equipped with a check valve 11, which is used to prevent liquid inside the bottom cover 3 from flowing back into the return pipe 9.

[0030] To further improve the utilization efficiency of the paint liquid discharged from the return pipe joint 10 into the paint tank 2 and to improve the mixing efficiency, such as... Figure 1 and Figure 3 As shown, a vertically arranged shaft 12 is fixed on the arc-shaped bottom 301, and a stirring blade 13 is rotatably mounted on the shaft 12. The stirring blade 13 is located at the liquid outlet of the reflux pipe connector 10.

[0031] Working principle: When using, such as Figure 1 As shown, the annular spray nozzle 5 is fitted over the outside of the working pipe 8 through the clearance opening. The electric spray gun 1 is turned on, and the electric spray gun 1 draws the paint stored in the paint can 2 into the tee 4. A portion of the paint in the tee 4 enters the annular spray nozzle 5, and is sprayed onto the working pipe 8 through the spray head 7 to form a fine atomized paint. The angle of the electric spray gun 1 is rotated to complete the circumferential spraying operation of the working pipe 8.

[0032] Another portion of the paint passes through the three-way connector 4 and enters the inner space of the bottom cover 3 through the manifold 9 and return pipe connector 10, stirring the paint located at the bottom of the bottom cover 3. At the same time, it pushes the stirring blade 13 to rotate, and the rotating stirring blade 13 further stirs the paint at the bottom of the paint tank 2, preventing the paint in the paint tank 2 from settling.

[0033] After the painting is completed, remove the paint can 2, bottom cover 3, tee 4, paint spray pipe 5, seal 6, and return pipe 9. Clean the paint can 2, bottom cover 3, tee 4, paint spray pipe 5, and seal 6, and then store them together with the electric spray gun 1.

[0034] Example 2: A handheld spray painting instrument for convenient pipe spraying. In this example, the spray head 7 is no longer provided, and the air jet hole on the annular spray pipe 5 is a flat through-hole structure. Other structures are the same as in Example 1.

[0035] Example 3: A handheld spray painting device for convenient pipe spraying. In this example, the bottom cover 3 and the paint can 2 are an integral structure. Other structures are the same as in Example 1.

[0036] Example 4: A handheld spray painting instrument for convenient pipeline spraying. In this example, the tee 4, return pipe 9, and bottom cover 3 are no longer provided. The bottom of the paint tank 2 is a closed structure. The annular spray pipe 5 is directly threaded to the outlet of the electric spray gun 1 through the spray pipe connector 501. Other structures are the same as in Example 1.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A handheld spray painting instrument for convenient pipeline spraying, characterized in that: Includes an electric spray gun (1), the bottom of which is provided with a liquid extraction tube (102) and a connecting tube head (101) that is wrapped around the outside of the liquid extraction tube (102). The connecting tube head (101) is detachably connected to the bottle mouth of the paint can (2), and the liquid extraction tube (102) is inserted into the paint can (2). The outlet of the electric spray gun (1) is detachably and sealed with an annular spray pipe (5). The outlet of the electric spray gun (1) is connected to the interior of the annular spray pipe (5). There is a clearance notch on the side of the annular spray pipe (5) away from the electric spray gun (1). The clearance notch is used for the entry and exit of the working pipe (8). Several spray holes are provided on the inner wall of the annular spray pipe (5) at intervals along its circumference. The spray holes face the center of the annular spray pipe (5).

2. The handheld spray painting instrument for convenient pipeline spraying as described in claim 1, characterized in that: A spray head (7) is provided at the paint spray hole, and the spray direction of the spray head (7) is towards the center of the annular paint spray tube (5).

3. The handheld spray painting instrument for convenient pipeline spraying as described in claim 1, characterized in that: Both ends of the annular spray pipe (5) are open structures. Both ends of the annular spray pipe (5) are provided with removable caps (6) to seal the openings at both ends of the annular spray pipe (5).

4. The handheld spray painting instrument for convenient pipeline spraying as described in claim 1, characterized in that: The bottom of the paint can (2) is open, and the bottom of the paint can (2) is sealed with a removable bottom cover (3).

5. The handheld spray painting instrument for convenient pipeline spraying as described in claim 4, characterized in that: A tee (4) is detachably connected to the outlet of the electric spray gun (1). One port of the tee (4) away from the electric spray gun (1) is detachably connected to the annular spray pipe (5). The remaining port of the tee (4) is detachably sealed to one end of the return pipe (9). The bottom cover (3) is provided with a return pipe connector (10) communicating with its inner space. The end of the return pipe connector (10) located outside the bottom cover (3) is detachably and sealed to the other end of the return pipe (9).

6. The handheld spray painting instrument for convenient pipeline spraying as described in claim 5, characterized in that: The return pipe connector (10) is equipped with a check valve (11), which is used to prevent the liquid inside the bottom cover (3) from flowing back into the return pipe (9).

7. A handheld spray painting instrument for convenient pipeline spraying as described in claim 5 or 6, characterized in that: The bottom cover (3) includes an arc-shaped bottom cover (301) and an annular side plate (302) fixed on the top of the arc-shaped bottom cover (301). The annular side plate (302) is detachably and sealingly fitted onto the lower end of the paint can (2). The return pipe connector (10) is fixed on the annular side plate (302).

8. The handheld spray painting instrument for convenient pipeline spraying as described in claim 7, characterized in that: A vertically arranged shaft (12) is fixed on the arc-shaped bottom (301), and a stirring blade (13) is rotatably arranged on the shaft (12). The stirring blade (13) is located at the liquid outlet of the reflux pipe joint (10).

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