Waterproof paint spray gun with extendable barrel

Abstract

This utility model discloses a waterproof coating spray gun with a telescopic barrel, including a spray gun body, a connecting outer tube, an extending inner tube, a shell, a limiting component, and a nozzle. The connecting outer tube is threaded onto the spray gun body, the extending inner tube is slidably installed inside the connecting outer tube, and the shell is fixedly installed on the outer wall of one end of the connecting outer tube. Through the setting of the limiting component, the connecting outer tube, and the extending inner tube, the telescopic length of the extending inner tube is stably limited. The threaded engagement between the threaded sleeve and the threaded rod allows the limiting block to be precisely fixed in the required position. When the extending inner tube is subjected to external force, the friction between the limiting block and the outer wall of the extending inner tube can effectively prevent its telescopic movement, ensuring that the barrel length remains stable during construction. At the same time, the anti-slip pad at the bottom of the limiting block further increases the friction and improves the reliability of the limiting, thereby ensuring the uniformity and quality of the spraying.

Description

Technical Field

[0001] This utility model relates to the field of waterproof coating spray gun technology, specifically a waterproof coating spray gun with a telescopic gun barrel. Background Technology

[0002] In many fields such as building decoration and waterproofing projects, waterproof coating spray guns are indispensable key tools. They can efficiently and evenly spray waterproof coatings onto various building surfaces, such as walls, floors, and roofs, providing reliable waterproof protection for buildings, effectively preventing water penetration, ensuring the stability and durability of building structures, and extending the service life of buildings.

[0003] Traditional waterproof coating spray guns typically use a fixed-length gun barrel design. This design has many limitations when facing different construction scenarios. For example, when spraying high walls or roofs, construction workers may need to use ladders or other auxiliary tools to complete the work, which not only increases the difficulty and danger of construction, but also reduces work efficiency. When spraying narrow spaces or low areas, an excessively long gun barrel may become an operational obstacle, affecting the accuracy and quality of spraying. Therefore, we need to propose a waterproof coating spray gun with a telescopic gun barrel. Utility Model Content

[0004] The purpose of this invention is to provide a waterproof coating spray gun with a telescopic barrel. By connecting the outer tube, extending the inner tube, and the limiting component, the telescopic length of the extending inner tube can be adjusted, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A retractable barrel waterproof coating spray gun includes a spray gun body, a connecting outer tube, an extending inner tube, a housing, a limiting component, and a nozzle. The connecting outer tube is threaded onto the spray gun body, the extending inner tube is slidably installed inside the connecting outer tube, the housing is fixedly installed on the outer wall of one end of the connecting outer tube, one end of the extending inner tube extends out of the housing and is threaded onto the nozzle, and the limiting component is installed on the top of the housing to limit the extension length of the extending inner tube.

[0007] The limiting component includes a threaded sleeve that is installed through the top of the housing. A threaded rod is installed inside the threaded sleeve. A knob is fixedly connected to the top of the threaded rod, and a limiting block is rotatably installed at the bottom via a bearing. The bottom of the limiting block is movably fitted against the outer wall of the extended inner tube.

[0008] Preferably, the bottom of the limiting block is configured as an arc shape that adapts to the outer wall of the extended inner tube, and an anti-slip pad is fixedly adhered to the inner wall of the arc shape.

[0009] Preferably, limit sliders are fixedly installed on both sides of the limiting block, and limit grooves are formed on both sides of the inner wall of the housing. One end of each set of limit sliders is slidably installed inside the two sets of limit grooves.

[0010] Preferably, two sets of first rubber sealing rings are fixedly embedded in the inner wall of the end of the connecting outer tube near the shell, and the inner walls of the two sets of first rubber sealing rings are slidably connected to the outer wall of the extending inner tube.

[0011] Preferably, two sets of second rubber sealing rings are fixedly embedded on the outer wall of the end of the extended inner tube away from the shell, and the outer walls of the two sets of second rubber sealing rings are slidably connected to the inner wall of the connecting outer tube.

[0012] Preferably, a steel ball sleeve is installed through one side wall of the housing, one end of the extended inner tube is inserted into the inside of the steel ball sleeve, and the outer wall of the extended inner tube is slidably connected to the inner wall of the steel ball sleeve.

[0013] Preferably, the outer wall of the knob is fitted with a rubber anti-slip sleeve, the surface of which is provided with anti-slip texture, and the rubber anti-slip sleeve is tightly fitted onto the knob by an interference fit.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention achieves stable limiting of the extension length of the inner tube by setting up a limiting component, connecting outer tube, and extending inner tube. The threaded engagement between the threaded sleeve and the threaded rod allows the limiting block to be precisely fixed in the required position. When the inner tube is subjected to external force, the friction between the limiting block and the outer wall of the inner tube can effectively prevent its extension and contraction, ensuring that the gun rod length remains stable during construction. At the same time, the anti-slip pad at the bottom of the limiting block further increases the friction and improves the reliability of the limiting, thereby ensuring the uniformity and quality of the spraying. Attached Figure Description

[0016] Figure 1 This is a side view of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the housing of this utility model;

[0019] Figure 4 This is a schematic diagram of the limiting component of this utility model.

[0020] In the diagram: 1. Spray gun body; 2. Connecting outer tube; 21. First rubber sealing ring; 3. Extending inner tube; 31. Second rubber sealing ring; 4. Housing; 41. Limiting groove; 5. Limiting assembly; 51. Threaded sleeve; 52. Threaded rod; 53. Knob; 54. Limiting block; 55. Limiting slider; 6. Nozzle; 7. Steel ball sleeve. 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] Please see Figure 1-4 This utility model provides a technical solution:

[0023] A telescopic waterproof coating spray gun includes a spray gun body 1, a connecting outer tube 2, an extending inner tube 3, a housing 4, a limiting component 5, and a nozzle 6. The connecting outer tube 2 is threaded onto the spray gun body 1. This threaded connection not only facilitates quick assembly and disassembly of the connecting outer tube 2 and the spray gun body 1, making it convenient for later maintenance or replacement of components, but also provides good sealing, effectively preventing coating leakage at the connection point. The extending inner tube 3 is slidably installed inside the connecting outer tube 2, allowing the extending inner tube 3 to freely extend and retract relative to the connecting outer tube 2, thereby adjusting the length of the spray gun to adapt to different construction scenarios and operating ranges. The housing 4 is fixedly installed on the outer wall of one end of the connecting outer tube 2, and one end of the extending inner tube 3 extends... The protruding housing 4 is threadedly installed with the nozzle 6. The threaded installation facilitates the replacement of the nozzle 6. When the nozzle 6 becomes clogged or damaged, it can be quickly disassembled and replaced with a new nozzle, ensuring the continuity of the spraying operation. The threaded connection also ensures a seal between the nozzle and the extension inner tube, preventing paint leakage. The limiting component 5 is installed on the top of the housing 4 to limit the extension length of the extension inner tube 3. The housing 4 provides a stable mounting carrier for the limiting component 5 and also provides a certain degree of protection for the internal telescopic structure, preventing external dust, impurities, etc. from causing contamination and damage. The limiting component 5 can fix the extension inner tube 3 at the required length position, ensuring the stability of the gun barrel length during the spraying process and improving the spraying accuracy.

[0024] In an optional embodiment: the limiting component 5 includes a threaded sleeve 51, which is installed through the top of the housing 4. A threaded rod 52 is installed inside the threaded sleeve 51. A knob 53 is fixedly connected to the top of the threaded rod 52. A limiting block 54 is rotatably installed at the bottom via a bearing. The bottom of the limiting block 54 is movably fitted against the outer wall of the extended inner tube 3.

[0025] It should be noted that the knob 53 increases the force application area for the operator, making the rotation operation more labor-saving and convenient; the bearing connection ensures that when the threaded rod 52 rotates, the limiting block 54 will not rotate with it, but will only move up and down along the axis, ensuring the stability of the limiting block 54 when in contact with the extension inner tube 3; the limiting and fixing of the extension inner tube 3 is achieved by the friction between the limiting block 54 and the extension inner tube 3, which is simple and effective to operate.

[0026] In an optional embodiment, the bottom of the limiting block 54 is configured to be arc-shaped to fit the outer wall of the extended inner tube 3, and an anti-slip pad is fixedly adhered to the arc-shaped inner wall.

[0027] It should be noted that this arc-shaped design increases the contact area between the limiting block 54 and the extended inner tube 3, making the force between the two more uniform and improving the reliability of the limiting. In addition, the anti-slip pad can increase the friction between the limiting block 54 and the extended inner tube 3, further enhancing the limiting effect, preventing the extended inner tube 3 from sliding during the spraying process, and ensuring the stability of the gun barrel length.

[0028] In an optional embodiment: limit sliders 55 are fixedly installed on both sides of the limit block 54, and limit grooves 41 are opened on both sides of the inner wall of the housing 4. One end of each of the two sets of limit sliders 55 is slidably installed inside the two sets of limit grooves 41.

[0029] It should be noted that the cooperation between the limiting slider 55 and the limiting groove 41 plays a guiding role, ensuring that the limiting block 54 will not deviate during the up and down movement, thus ensuring the accuracy of the contact position between the limiting block 54 and the extension inner tube 3, and also enhancing the stability of the limiting block 54 during operation.

[0030] In an optional embodiment: two sets of first rubber sealing rings 21 are fixedly embedded in the inner wall of the end of the connecting outer tube 2 near the housing 4, and the inner walls of the two sets of first rubber sealing rings 21 are slidably connected to the outer wall of the extending inner tube 3.

[0031] It should be noted that the first rubber sealing ring 21 has good elasticity and sealing performance, which can effectively prevent paint from leaking from the gap between the connecting outer tube 2 and the extending inner tube 3, reducing paint waste. At the same time, it can also block external dust and impurities from entering the interior of the connecting outer tube 2, avoiding pollution and wear to the internal structure and extending the service life of the spray gun.

[0032] In an optional embodiment: two sets of second rubber sealing rings 31 are fixedly embedded on the outer wall of the end of the inner tube 3 away from the shell 4, and the outer walls of the two sets of second rubber sealing rings 31 are slidably connected to the inner wall of the connecting outer tube 2.

[0033] It should be noted that the second rubber sealing ring 31 and the first rubber sealing ring 21 form a double sealing structure, which further enhances the overall sealing performance. Even during high-pressure spraying operations, it can effectively prevent paint leakage. At the same time, the double seal can better block external impurities from entering, improving the reliability and durability of the spray gun.

[0034] In an optional embodiment: a steel ball sleeve 7 is installed through one side wall of the housing 4, one end of the extended inner tube 3 is inserted into the inside of the steel ball sleeve 7, and the outer wall of the extended inner tube 3 is slidably connected to the inner wall of the steel ball sleeve 7.

[0035] It should be noted that the steel balls inside the steel ball sleeve 7 can reduce the friction between the inner extension tube 3 and the housing 4 during the extension and retraction, making the extension and retraction of the inner extension tube 3 smoother and less strenuous. At the same time, the steel ball sleeve 7 provides support and guidance for the inner extension tube 3, ensuring that the inner extension tube 3 always maintains a straight line during the extension and retraction process, avoiding deviation or shaking, and improving the stability of the gun barrel extension and retraction.

[0036] In an optional embodiment: the outer wall of the knob 53 is fitted with a rubber anti-slip sleeve, the surface of which is provided with anti-slip texture, and the rubber anti-slip sleeve is tightly fitted onto the knob 53 by an interference fit.

[0037] It should be noted that the rubber anti-slip sleeve has good anti-slip performance, which can increase the friction between the operator's hand and the knob 53. Even if the hand is covered with paint or sweat, the knob can be rotated stably and avoid slipping. The anti-slip texture further enhances the anti-slip effect, and the interference fit installation method ensures the firm connection between the rubber anti-slip sleeve and the knob 53, making it less likely to fall off and extending its service life.

[0038] Working principle: When adjusting the length of the gun barrel, rotating the knob 53 drives the threaded rod 52 to rotate inside the threaded sleeve 51, causing the limiting block 54 to move upward and disengage from the extension inner tube 3. At this time, the extension inner tube 3 can slide freely inside the connecting outer tube 2 to adjust the length. After the adjustment is in place, rotating the knob 53 in the opposite direction causes the limiting block 54 to move downward and press against the extension inner tube 3, achieving locking through the friction of the anti-slip pad.

[0039] During spraying, the paint enters the connecting outer tube 2 from the spray gun body 1, and is then transported to the nozzle 6 through the extended inner tube 3 for spraying. Double rubber sealing rings prevent paint leakage, steel ball sleeve 7 ensures smooth and stable extension and retraction of the extended inner tube 3, and limit slider 55 cooperates with limit groove 41 to ensure accurate positioning of limit block 54.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A telescopic lance with a water-resistant coating spray gun, characterized in that, The spray gun includes a main body (1), a connecting outer tube (2), an extending inner tube (3), a housing (4), a limiting component (5), and a nozzle (6). The connecting outer tube (2) is threadedly installed on the spray gun main body (1), the extending inner tube (3) is slidably installed inside the connecting outer tube (2), the housing (4) is fixedly installed on the outer wall of one end of the connecting outer tube (2), one end of the extending inner tube (3) extends out of the housing (4) and is threadedly installed with the nozzle (6), and the limiting component (5) is installed on the top of the housing (4) to limit the extension length of the extending inner tube (3). The limiting component (5) includes a threaded sleeve (51), which is installed through the top of the housing (4). A threaded rod (52) is installed inside the threaded sleeve (51). A knob (53) is fixedly connected to the top of the threaded rod (52), and a limiting block (54) is rotatably installed at the bottom via a bearing. The bottom of the limiting block (54) is movably fitted against the outer wall of the extended inner tube (3).

2. A telescopic lance's water-proof paint spray gun according to claim 1, characterized in that: The bottom of the limiting block (54) is set to be an arc shape that matches the outer wall of the extended inner tube (3), and the arc-shaped inner wall is fixedly bonded with an anti-slip pad.

3. The telescopic pole coati ng gun of claim 1, wherein: Limiting sliders (55) are fixedly installed on both sides of the limiting block (54), and limiting grooves (41) are opened on both sides of the inner wall of the housing (4). One end of each of the two sets of limiting sliders (55) is slidably installed inside the two sets of limiting grooves (41).

4. The telescopic pole coati ng gun of claim 1, wherein: Two sets of first rubber sealing rings (21) are fixedly embedded on the inner wall of the end of the connecting outer tube (2) near the shell (4), and the inner walls of the two sets of first rubber sealing rings (21) are slidably connected to the outer wall of the extending inner tube (3).

5. The waterproof coating spray gun with a retractable barrel according to claim 1, characterized in that: Two sets of second rubber sealing rings (31) are fixedly embedded on the outer wall of the end of the extended inner tube (3) away from the shell (4), and the outer walls of the two sets of second rubber sealing rings (31) are slidably connected to the inner wall of the connecting outer tube (2).

6. The telescopic gun pole's water-proof paint sprayer gun of claim 1, wherein: A steel ball sleeve (7) is installed through one side wall of the housing (4), and one end of the extended inner tube (3) is inserted into the inside of the steel ball sleeve (7), and the outer wall of the extended inner tube (3) is slidably connected to the inner wall of the steel ball sleeve (7).

7. The telescopic pole coati ng gun of claim 1, wherein: The outer wall of the knob (53) is fitted with a rubber anti-slip sleeve. The surface of the rubber anti-slip sleeve is provided with anti-slip texture, and the rubber anti-slip sleeve is tightly fitted onto the knob (53) by an interference fit.

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