Aerosol delivery device

Abstract

The utility model belongs to the technical field of spray gun, concretely relates to a pneumatic adjusting type spray gun structure, including spray gun main part and the movable valve body, front feeding assembly and rear feeding assembly of setting in spray gun main part, the middle part of movable valve body has the valve piece, and the middle part of valve piece is provided with overflow hole, front and rear feeding assembly is located movable valve body's front and back side respectively, the rear end of front feeding assembly and the front end face sealed contact of valve piece, the front end of rear feeding assembly and the front end face sealed contact of valve piece, front and rear feeding assembly has front feeding channel and rear feeding channel respectively, and front and rear feeding channel communicates through overflow hole, movable valve body can reciprocate under the pressure difference between both ends to regulate the staggered degree of overflow hole and front feeding channel and rear feeding channel. In the scheme, the movable valve body is integrated into the spray gun, which can improve the instantaneity of the spray gun flow control; the opening degree is controlled through the pressure difference, which has high compatibility.

Description

Technical Field

[0001] This utility model belongs to the field of spray gun technology, specifically relating to a pneumatically adjustable spray gun structure. Background Technology

[0002] During the paint spraying process, a spray gun structure is often required. The working principle of an airless spray gun is to pressurize the paint to a high pressure state through a high-pressure pump. When the paint is sprayed out of the nozzle, due to the sudden change in pressure inside and outside the nozzle, the paint rapidly expands and atomizes, forming an extremely fine mist stream, without relying on compressed air to atomize the paint.

[0003] In actual spraying processes, different components require different paint flow rates. Current technology typically controls paint flow by connecting a valve to the rear of the spray gun. However, because the valve is generally a certain distance from the spray gun, the feedback efficiency for paint flow control is low, affecting the immediacy of flow control during real-time spraying.

[0004] Therefore, it is necessary to design a spray gun structure with built-in pneumatic adjustment and valve control. Utility Model Content

[0005] To address the aforementioned problems in existing technologies, this solution provides a pneumatically adjustable spray gun structure.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A pneumatically adjustable spray gun structure includes a spray gun body and a movable valve body, a front feeding assembly and a rear feeding assembly disposed within the spray gun body.

[0008] The movable valve body has a valve plate in the middle, and the valve plate has an overflow hole in the middle.

[0009] The front feeding assembly is located on the front side of the movable valve body; the rear end of the front feeding assembly is in sealed contact with the front end face of the valve plate; the rear feeding assembly is located on the rear side of the movable valve body; the front end of the rear feeding assembly is in sealed contact with the front end face of the valve plate; the front feeding assembly has a front feeding channel, and the rear feeding assembly has a rear feeding channel; the front feeding channel and the rear feeding channel are connected through a flow hole.

[0010] The movable valve body can reciprocate under the action of the air pressure difference between its two ends to adjust the degree of misalignment between the flow orifice and the front and rear feeding channels.

[0011] As an alternative or supplement to the above structure: the spray gun body is provided with a valve mounting cavity and a feeding component mounting cavity; the valve mounting cavity and the feeding component mounting cavity intersect perpendicularly to form a cross shape; the movable valve body is installed in the valve mounting cavity; the front feeding assembly and the rear feeding assembly are installed in the feeding component mounting cavity.

[0012] As an alternative or supplement to the above structure: both the front feeding assembly and the rear feeding assembly include a connecting joint, a feeding pipe, a compression spring, a telescopic tube head, and a sealing ring; the feeding pipe is fixedly installed in the movable valve body, and the compression spring is sleeved on the outside of the feeding pipe; the telescopic tube head is inserted into one end of the feeding pipe and pressed against the end face of the valve plate by the compression spring; the sealing ring is provided at the part of the telescopic tube head that is used to contact the valve plate; the connecting joint is fixedly connected to the other end of the feeding pipe.

[0013] As an alternative or supplement to the above structure: a sealing cylinder is provided inside the spray gun body, and piston heads are respectively provided at both ends of the movable valve body, with the piston heads sealingly engaging with the sealing cylinder; the openings at both ends of the sealing cylinder are respectively sealed by caps.

[0014] As an alternative or supplement to the above structure: the spray gun body is provided with two air passages, which are respectively connected to both ends of the sealing cylinder to adjust the air pressure difference between the two ends of the movable valve body.

[0015] As an alternative or supplement to the above structure: a limiting component is provided inside the spray gun body. The limiting component includes an adjusting plate and a limiting rod. The front end of the limiting rod is threadedly connected to the adjusting plate, and the rear end of the limiting rod has a wedge-shaped head that engages with the inclined surface of one end of the movable valve body. The adjusting plate can rotate to adjust the front and rear positions of the limiting rod.

[0016] As an alternative or supplement to the above structure: a limiting component mounting cavity is provided inside the spray gun body. When the limiting component is installed in the limiting component mounting cavity, the upper edge of the adjusting plate extends out of the spray gun body. A pointer is provided at the front end of the limiting rod. The pointer slides with the spray gun body and is used to indicate the front and rear positions of the limiting rod and limit the rotation of the limiting rod.

[0017] As an alternative or supplement to the above structure: the front end of the spray gun body is provided with a nozzle, which is connected to the front feeding assembly and communicates with the front feeding channel.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. In this solution, the movable valve body is integrated into the spray gun, which improves the immediacy of the spray gun flow control; at the same time, it eliminates the need for a separate structure combining the spray gun and the valve, thus simplifying the structure and making it suitable for applications with limited space.

[0020] 2. In addition, the movement of the movable valve body is controlled by air pressure difference. Since most production lines are equipped with air circuit systems, this solution can use the existing air circuit system on the production line to control the paint flow. The structure of this solution is compatible with existing production lines with air circuit systems. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this scheme or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the pneumatically adjustable spray gun structure in this scheme;

[0023] Figure 2 This is an exploded view of the pneumatically adjustable spray gun structure in this design.

[0024] Figure 3 This is a cross-sectional structural diagram of the spray gun body;

[0025] Figure 4 This is a cross-sectional view of the pneumatically adjustable spray gun structure in this design.

[0026] Figure 5 This is a structural diagram of the rear feeding assembly;

[0027] Figure 6 This is a structural diagram showing the connection between the movable valve body, the limiting component, and the telescopic pipe head.

[0028] In the diagram: 1-Nose; 2-Spray gun body; 21-Limiting component mounting cavity; 22-Valve mounting cavity; 23-Feeding component mounting cavity; 24-Air passage; 3-Limiting component; 31-Adjusting disc; 32-Limiting rod; 33-Wedge head; 4-Air connector; 5-Front feeding component; 6-Rear feeding component; 61-Connecting connector; 62-Compression spring; 63-Feeding pipe; 64-Telescopic pipe head; 65-Sealing ring; 7-Cap; 8-Sealing cylinder; 9-Moving valve body; 91-Valve plate; 92-Piston head. Detailed Implementation

[0029] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this solution without creative effort are within the protection scope of this solution.

[0030] like Figures 1 to 6 As shown, this embodiment designs a pneumatically adjustable spray gun structure, including a spray gun body 2, a nozzle 1, a movable valve body 9, a front feeding assembly 5, a rear feeding assembly 6, a limiting assembly 3, and other components.

[0031] The spray gun body 2 can be adopted Figure 1The elongated structure in the spray gun body 2 can also adopt other shapes; no restrictions are placed here. The spray gun body 2 is equipped with a limiting component mounting cavity 21, a valve mounting cavity 22, a feeding component mounting cavity 23, and an air passage 24. The feeding component mounting cavity 23 is arranged along the front-to-back direction and is used to install the front feeding assembly 5 and the rear feeding assembly 6. The valve mounting cavity 22 is arranged along the vertical direction and intersects the feeding component mounting cavity 23 perpendicularly. The valve mounting cavity 22 is used to install the sealing cylinder 8 and the movable valve body 9. The limiting component mounting cavity 21 is located above the front section of the feeding component mounting cavity 23 and communicates with the valve mounting cavity 22. There are two air passages 24, located on the upper and lower sides of the rear section of the feeding component mounting cavity 23, respectively. Each end of the two air passages 24 has an air connector 4 for connecting to an air pipeline.

[0032] The movable valve body 9 has a valve plate 91 in the middle, and the valve plate 91 has an overflow hole in the middle; the upper and lower ends of the movable valve body 9 have piston heads 92. The movable valve body 9 can move up and down within the spray gun body 2.

[0033] The front feeding assembly 5 is located on the front side of the movable valve body 9; the rear end of the front feeding assembly 5 is in sealing contact with the front end face of the valve plate 91; the front feeding assembly 5 includes components such as a connecting joint 61, a feeding pipe 63, a compression spring 62, a telescopic tube head 64, and a sealing ring 65; the feeding pipe 63 is fixedly installed inside the movable valve body 9, and the compression spring 62 is sleeved on the outside of the feeding pipe 63; the telescopic tube head 64 is inserted into one end of the feeding pipe 63 and pressed against the end face of the valve plate 91 by the compression spring 62; the sealing ring 65 is provided at the part of the telescopic tube head 64 that contacts the valve plate 91; the connecting joint 61 is fixedly connected to the other end of the feeding pipe 63. The front feeding assembly 5 has a front feeding channel for conveying paint. Both ends of the connecting joint 61 of the front feeding assembly 5 have external threads to facilitate connecting the nozzle 1 to the front end of the connecting joint 61.

[0034] The rear feeding assembly 6 is located behind the movable valve body 9; the front end of the rear feeding assembly 6 is in sealing contact with the front end face of the valve plate 91; the rear feeding assembly 6 also includes components such as a connecting joint 61, a feeding pipe 63, a compression spring 62, a telescopic tube head 64, and a sealing ring 65; the feeding pipe 63 is fixedly installed inside the movable valve body 9, and the compression spring 62 is sleeved on the outside of the feeding pipe 63; the telescopic tube head 64 is inserted into one end of the feeding pipe 63 and pressed against the end face of the valve plate 91 by the compression spring 62; the sealing ring 65 is provided at the part of the telescopic tube head 64 that contacts the valve plate 91; the connecting joint 61 is fixedly connected to the other end of the feeding pipe 63. The rear feeding assembly 6 has a rear feeding channel, which is coaxial with the front feeding channel and is also used to transport paint. The front end of the connecting joint 61 of the rear feeding assembly 6 has an external thread and the rear end is a quick connector, so as to connect the hose for conveying paint to the rear end of the connecting joint 61.

[0035] The front feeding channel and the rear feeding channel are connected through the flow hole; the movable valve body 9 can reciprocate under the action of the air pressure difference between its two ends, thereby changing the part of the flow hole connected with the front feeding channel and the rear feeding channel, so as to control the paint flow rate by adjusting the degree of misalignment between the flow hole and the front feeding channel and the rear feeding channel.

[0036] A sealing cylinder 8 is installed inside the spray gun body 2. The piston heads 92 at both ends of the movable valve body 9 are respectively sealed to the sealing cylinder 8. The openings at both ends of the sealing cylinder 8 are respectively sealed by caps 7. The two air passages 24 are connected to both ends of the sealing cylinder 8 through holes on the side wall of the sealing cylinder 8. When one air passage 24 is filled with air and the other air passage 24 is exhausted, the movable valve body 9 can move up or down, thereby adjusting the air pressure difference between the two ends of the movable valve body 9 and thus changing the flow rate of the paint.

[0037] The spray gun body 2 is equipped with a limiting component 3, which includes an adjusting disc 31 and a limiting rod 32. The front end of the limiting rod 32 is threadedly connected to the adjusting disc 31, and the rear end of the limiting rod 32 has a wedge-shaped head 33 that engages with the inclined surface of one end of the movable valve body 9. The adjusting disc 31 can rotate to adjust the front and rear position of the limiting rod 32. The spray gun body 2 is equipped with a limiting component mounting cavity 21. When the limiting component 3 is installed in the limiting component mounting cavity 21, the upper edge of the adjusting disc 31 extends out of the spray gun body 2. A pointer is provided at the front end of the limiting rod 32, which slides with the spray gun body 2. The pointer is used to indicate the front and rear position of the limiting rod 32 and also to limit the rotation of the limiting rod 32. When the adjusting disc 31 is manually rotated, the front and rear position of the limiting rod 32 can be adjusted, causing the length of the wedge-shaped head 33 extending into the valve mounting cavity 22 to change; thereby adjusting the limit position of the movable valve body 9 when it moves upward, thus changing the upper limit of the paint flow rate.

[0038] The nozzle 1 is conical and connected to the front end of the spray gun body 2. The nozzle 1 is threadedly connected to the front feeding assembly 5 and communicates with the front feeding channel so as to spray the paint through the nozzle 1.

[0039] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation; it is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom remain within the scope of this technology.

Claims

1. A pneumatically adjustable spray gun structure, characterized in that: It includes a spray gun body (2) and a movable valve body (9), a front feeding assembly (5) and a rear feeding assembly (6) disposed within the spray gun body (2); The movable valve body (9) has a valve plate (91) in the middle, and the valve plate (91) is provided with an overflow hole in the middle. The front feeding assembly (5) is located on the front side of the movable valve body (9); the rear end of the front feeding assembly (5) is in sealed contact with the front end face of the valve plate (91); the rear feeding assembly (6) is located on the rear side of the movable valve body (9); the front end of the rear feeding assembly (6) is in sealed contact with the front end face of the valve plate (91); the front feeding assembly (5) has a front feeding channel, and the rear feeding assembly (6) has a rear feeding channel. The front feeding channel and the rear feeding channel are connected through a flow passage; The movable valve body (9) can reciprocate under the action of the air pressure difference between its two ends to adjust the degree of misalignment between the flow hole and the front and rear feeding channels.

2. The aeronomically regulated lance structure according to claim 1, characterized in that: The spray gun body (2) is provided with a valve mounting cavity (22) and a feeding component mounting cavity (23); the valve mounting cavity (22) and the feeding component mounting cavity (23) intersect perpendicularly to form a cross shape; the movable valve body (9) is installed in the valve mounting cavity (22); the front feeding assembly (5) and the rear feeding assembly (6) are installed in the feeding component mounting cavity (23).

3. A gas dynamic adjusted lance structure according to claim 1 or 2, characterized in that: Both the front feeding assembly (5) and the rear feeding assembly (6) include a connecting joint (61), a feeding pipe (63), a compression spring (62), a telescopic head (64), and a sealing ring (65); the feeding pipe (63) is fixedly installed inside the movable valve body (9), and the compression spring (62) is sleeved on the outside of the feeding pipe (63); the telescopic head (64) is inserted into one end of the feeding pipe (63) and pressed against the end face of the valve plate (91) by the compression spring (62); the sealing ring (65) is set at the part of the telescopic head (64) that is used to contact the valve plate (91); the connecting joint (61) is fixedly connected to the other end of the feeding pipe (63).

4. The aeronomically regulated lance according to claim 1 or 2, characterized in that: The spray gun body (2) is provided with a sealing cylinder (8), and the two ends of the movable valve body (9) are respectively provided with piston heads (92), which are sealed to the sealing cylinder (8); the openings at both ends of the sealing cylinder (8) are respectively sealed by caps (7).

5. The aeronomically regulated lance structure according to claim 4, characterized in that: The spray gun body (2) is provided with two air passages (24), which are connected to both ends of the sealing cylinder (8) to adjust the air pressure difference between the two ends of the movable valve body (9).

6. The aeronomically regulated lance structure according to claim 1, 2 or 4, characterized in that: The spray gun body (2) is provided with a limiting component (3). The limiting component (3) includes an adjusting plate (31) and a limiting rod (32). The front end of the limiting rod (32) is threadedly connected to the adjusting plate (31), and the rear end of the limiting rod (32) has a wedge head (33) and cooperates with the inclined surface of one end of the movable valve body (9). The adjusting plate (31) can be rotated to adjust the front and rear positions of the limiting rod (32).

7. The aeronomically regulated lance structure according to claim 6, characterized in that: The spray gun body (2) is provided with a limiting component mounting cavity (21). When the limiting component (3) is installed in the limiting component mounting cavity (21), the upper edge of the adjusting plate (31) extends out of the spray gun body (2). A pointer is provided at the front end of the limiting rod (32). The pointer slides with the spray gun body (2). The pointer is used to indicate the front and rear position of the limiting rod (32) and limit the rotation of the limiting rod (32).

8. The aeronomically regulated lance structure of claim 1, wherein: The front end of the spray gun body (2) is provided with a nozzle (1), which is connected to the front feeding assembly (5) and communicates with the front feeding channel.

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