Automatic polyurea spray gun

Abstract

The utility model discloses an automatic polyurea spray gun which comprises a shell, an air cap is installed at one end of the shell, and a piston type safety lock is installed at the other end of the shell. The air outlet is formed in the circle center of the air cap; the device further comprises a protection assembly. The protection assembly is composed of a closing piece and a connecting piece, the closing piece is arranged in the air cap and attached to or penetrates through the end face of the air outlet, and when the closing piece is attached to or separated from the end face of the air outlet, the end face of the air outlet can be covered, so that the air outlet is blocked, and external impurities are prevented from entering the air outlet. The connecting piece is arranged between the closing piece and the air cap; through the designed protection assembly, the air outlet can be blocked and closed in the idle state, various external impurities are prevented from entering the air outlet, meanwhile, accidental starting can be avoided, in the normal use process, the protection assembly can be jacked open by the air outlet, it is guaranteed that normal spraying is not affected, and the overall flexibility and practicability are high; the defects of an existing spray gun in use are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyurea automatic spray guns, and in particular relates to an automatic polyurea spray gun. Background Art

[0002] The polyurea automatic spray gun is a portable spraying device powered by compressed air and has a wide range of applications. It is an indispensable spraying tool for both on-site construction and laboratory spraying experiments.

[0003] After the existing polyurea automatic spray gun is used, its air outlet is always exposed to the outside, so various impurities and foreign objects from the outside can easily enter, which has a certain impact on subsequent use. The current common treatment method is to disassemble and clean the air outlet, which is very cumbersome, so there is room for improvement in practical applications. Utility Model Content

[0004] The utility model aims to provide a polyurea automatic spray gun to solve the problem in the background art that the air outlet of the existing automatic spray gun has no protective structure, which may affect the subsequent use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polyurea automatic spray gun, comprising a shell, one end of which is equipped with an air cap and the other end of which is equipped with a piston-type safety lock; an air outlet is installed at the center of the air cap; and also includes a protective component; the protective component is composed of a closing piece and a connecting piece, wherein the closing piece is placed inside the air cap and fits or penetrates the end face of the air outlet, and when fitting or separating, the end face of the air outlet can be covered, thereby achieving the blocking of the air outlet to prevent the entry of external impurities, and at the same time, the safety hazard caused by accidentally starting the spray gun can be avoided, and when the two are penetrated, the gun can be used normally; the connecting piece is arranged between the closing piece and the air cap, and is used to achieve the connection limit of the closing piece.

[0006] Preferably, the closing member includes a baffle plate, a through hole is opened at the center of the baffle plate, a baffle plate is bonded to the inner wall of the through hole, the center of the baffle plate and the center of the air outlet are on the same horizontal line, and the longitudinal section of the baffle plate is larger than the diameter of the end face of the air outlet. When sealing is required, the baffle plate only needs to be separated from the air outlet or is only in a flat fit state to achieve sealing. On the contrary, when the two are penetrated, the air outlet will push the baffle plate open. At this time, there is no obstruction on the end face of the air outlet and it can be used normally.

[0007] Preferably, a connecting groove is formed on the inner wall of the air cap, and a protrusion is fixed on the side of the baffle, and the protrusion is slidably inserted into the connecting groove to achieve connection with the baffle.

[0008] Preferably, the connecting member includes a spring, and the spring is located between the baffle and the inner end surface of the air cap. Under normal circumstances, the baffle and the air outlet are separated by the rebound of the spring, and when squeezed by the shell, the baffle and the air outlet can penetrate each other.

[0009] Preferably, a thread is formed on the outer surface of one end of the shell, and the inner wall of the air cap is threadedly connected to one end of the shell. When sealing is required, the air cap is rotated toward the outside of the shell, and vice versa.

[0010] Preferably, a placement hole is also provided on the inner side surface of the baffle, and the end of the spring is placed inside the placement hole, thereby achieving the placement of the spring.

[0011] Preferably, a locking ring is also provided on the shell, and an air valve is also provided on one side of the locking ring; a fluid tube is installed at the bottom of one end of the shell, the bottom end of the fluid tube is respectively connected to a side liquid valve and a fluid valve, and a fluid inlet is opened on the side of the fluid tube, a fluid rotation inlet is opened at the rear end of the fluid tube, and an air inlet is also opened at the bottom of the shell.

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

[0013] The designed protective component can seal and close the air outlet when idle to prevent various external impurities from entering and avoid accidental startup. In normal use, the protective component can be pushed open by the air outlet to ensure that normal spraying is not affected. The overall flexibility and practicality are high, which improves the shortcomings of existing spray guns in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a cross-sectional view of the connection between the air cap and the baffle of the utility model;

[0016] Figure 3 For this utility model Figure 2 Cross-sectional view at AA in the middle.

[0017] In the figure: 1. side liquid valve; 2. fluid valve; 3. air cap; 4. shell; 5. fluid pipe; 6. air valve; 7. piston safety lock; 8. air outlet; 9. fluid inlet; 10. locking ring; 11. fluid rotary inlet; 12. air inlet; 13. spring; 14. baffle; 15. connecting groove; 16. baffle; 17. placement hole; 18. bump. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1 to 3 The utility model provides a technical solution: a polyurea automatic spray gun, comprising

[0020] A housing 4, one end of which is provided with an air cap 3 and the other end of which is provided with a piston-type safety lock 7;

[0021] The air outlet 8 is installed at the center of the air cap 3;

[0022] Also includes

[0023] Protection component; the protection component consists of a closing part and a connecting part, wherein

[0024] The closing piece is placed inside the air cap 3 and is fitted with or penetrated by the end face of the air outlet 8. When fitted with or separated from the air outlet 8, it can cover the end face of the air outlet 8, thereby sealing the air outlet 8 to prevent the entry of foreign matter. At the same time, it can also avoid the safety hazard caused by accidental start-up of the spray gun. When the two are penetrated, they can be used normally. The connecting piece is arranged between the closing piece and the air cap 3 to realize the connection limit of the closing piece.

[0025] In the present embodiment, preferably, the closing member includes a baffle 14, a through hole is opened at the center of the baffle 14, a baffle 16 is bonded to the inner wall of the through hole, the center of the baffle 16 is on the same horizontal line as the center of the air outlet 8, and the longitudinal section of the baffle 16 is larger than the end face diameter of the air outlet 8. When sealing is required, the baffle 14 only needs to be separated from the air outlet 8 or is only in a flat fit state to achieve sealing. On the contrary, when the two are penetrated, the air outlet 8 will push the baffle 16 open. At this time, there is no obstruction on the end face of the air outlet 8 and it can be used normally.

[0026] In this embodiment, preferably, a connecting groove 15 is formed on the inner wall of the air cap 3 , and a protrusion 18 is fixed to the side of the baffle 14 , and the protrusion 18 is slidably inserted into the connecting groove 15 , thereby achieving connection with the baffle 14 .

[0027] In this embodiment, preferably, the connecting member includes a spring 13, and the spring 13 is located between the baffle 14 and the inner end surface of the air cap 3. Under normal circumstances, the baffle 14 and the air outlet 8 are separated by the rebound of the spring 13, and when squeezed by the shell 4, the baffle 14 and the air outlet 8 can be mutually penetrated.

[0028] In this embodiment, preferably, a thread is provided on the outer surface of one end of the shell 4, and the inner wall of the air cap 3 is threadedly connected to one end of the shell 4. When sealing is required, the air cap 3 is rotated toward the outside of the shell 4, and vice versa.

[0029] In this embodiment, preferably, a placement hole 17 is further provided on the inner side surface of the baffle 14 , and the end of the spring 13 is placed inside the placement hole 17 , so that the spring 13 is placed.

[0030] In this embodiment, preferably, a locking ring 10 is further provided on the shell 4, and an air valve 6 is also provided on one side of the locking ring 10; a fluid tube 5 is installed at the bottom of one end of the shell 4, and the bottom end of the fluid tube 5 is respectively connected to the side liquid valve 1 and the fluid valve 2, and a fluid inlet 9 is opened on the side of the fluid tube 5, a fluid rotation inlet 11 is opened at the rear end of the fluid tube 5, and an air inlet 12 is also opened at the bottom of the shell 4.

[0031] Although the embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyurea automatic spray gun, comprising A housing (4) having an air cap (3) mounted on one end and a piston safety lock (7) mounted on the other end; An air outlet (8) is installed at the center of the air cap (3); Features: Also includes Protection component; the protection component consists of a closing part and a connecting part, wherein The closing piece is placed inside the air cap (3) and fits with or penetrates the end surface of the air outlet (8); the connecting piece is arranged between the closing piece and the air cap (3).

2. The polyurea automatic spray gun according to claim 1, characterized in that: The closing member comprises a baffle (14), a through hole is provided at the center of the baffle (14), a baffle (16) is bonded to the inner wall of the through hole, the center of the baffle (16) is on the same horizontal line as the center of the air outlet (8), and the longitudinal section of the baffle (16) is larger than the end face diameter of the air outlet (8).

3. The polyurea automatic spray gun according to claim 2, characterized in that: The inner wall of the air cap (3) is provided with a connecting groove (15), and a convex block (18) is fixed on the side of the baffle (14), and the convex block (18) is slidably inserted into the connecting groove (15).

4. The polyurea automatic spray gun according to claim 3, characterized in that: The connecting member comprises a spring (13), and the spring (13) is located between the baffle (14) and the inner end surface of the air cap (3).

5. The polyurea automatic spray gun according to claim 4, characterized in that: The outer surface of one end of the shell (4) is provided with a thread, and the inner wall of the air cap (3) is threadedly connected to the one end of the shell (4).

6. The polyurea automatic spray gun according to claim 4, characterized in that: The inner side surface of the baffle (14) is also provided with a placement hole (17), and the end of the spring (13) is placed inside the placement hole (17).

7. The polyurea automatic spray gun according to claim 1, characterized in that: The shell (4) is also provided with a locking ring (10), and an air valve (6) is also provided on one side of the locking ring (10); a fluid pipe (5) is installed at the bottom of one end of the shell (4), and the bottom ends of the fluid pipe (5) are respectively connected to a side liquid valve (1) and a fluid valve (2), and a fluid inlet (9) is provided on the side of the fluid pipe (5), and a fluid rotation inlet (11) is provided at the rear end of the fluid pipe (5), and an air inlet (12) is also provided at the bottom of the shell (4).

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