Pressure feed type spray gun for spraying

Abstract

The utility model relates to the technical field of air purification, and particularly discloses a pressure feed type spray gun for spraying, which comprises a spraying gun body, a spraying air pressure regulating valve arranged at the top end of the spraying gun body, a spraying flow regulating valve arranged at the top of the spraying air pressure regulating valve, and a connecting seat arranged at the top of the spraying flow regulating valve. The outer portion of the connecting base is hinged to a trigger handle through a second shaft pin, the middle of the trigger handle is connected with a valve rod of the spraying flow adjusting valve, a ball buckle body is elastically arranged on one side of the connecting sleeve, and a second U-shaped frame buckle is connected with the connecting sleeve in a clamped mode. According to the technical scheme, the connecting sleeve moves along with the movement of the trigger handle, and the ball buckle body of the connecting sleeve is clamped and limited on any matching hole in a self-adaptive manner, so that the trigger handle can suspend at the position where the ball buckle body is clamped with any matching hole, and constant-pressure and constant-flow pesticide spraying is realized; the pesticide spraying quality is ensured; and meanwhile, the difficulty of manually controlling constant-pressure and constant-flow pesticide spraying is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to a pressure-feeding spray gun for spraying. Background Art

[0002] A pressure-feed spray gun is a tool that uses pressure to spray liquids in an atomized form. It uses compressed air to push the agent out of the container and spray it onto the surface that needs to be sprayed. In home decoration, boards are needed. Currently, all boards will release a certain amount of formaldehyde. In order to purify some of the formaldehyde in the boards, formaldehyde removal agents such as formaldehyde adsorbents, formaldehyde slow-release agents, and formaldehyde photocatalysts can be sprayed on the surface of the boards to help reduce the amount of formaldehyde released by the boards. A pressure-feed spray gun is usually composed of a nozzle, a spray gun body, an air cap, a nozzle, a nozzle terminal and other components. The design of a pressure-feed spray gun is quite mature, but it is still There are some structures that can be improved to enhance their performance and user experience. For example, current pressure-feed spray guns require manual pressing of the trigger handle to adjust the flow rate and gas pressure of the sprayed liquid. However, when spraying over a large area, it is necessary to maintain a stable spraying flow rate and gas pressure to reduce the waste of the agent. This requires manual continuous pressing and holding of the trigger handle, which is labor-intensive. Hand shaking can cause changes in the spraying flow rate and gas pressure values, and it is impossible to provide a continuous output of stable spraying flow rate and gas pressure. Improvements are needed. Therefore, we propose a pressure-feed spray gun for spraying. Utility Model Content

[0003] The utility model aims to provide a pressure-feed spray gun for spraying, which solves the problems raised in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure-feed spray gun for spraying, comprising a spray gun body, a spray air pressure regulating valve for controlling the gas flow rate is arranged on the top of the spray gun body, a spray flow regulating valve for controlling the flow rate of the agent is arranged on the top of the spray air pressure regulating valve, a connecting seat is arranged on the top of the spray flow regulating valve, the outside of the connecting seat is hingedly connected to the trigger handle through a second shaft pin, the middle part of the trigger handle is connected to the valve stem of the spray flow regulating valve through a first shaft pin, a connecting sleeve is arranged on the outside of the bottom end of the trigger handle, a ball head buckle body is elastically arranged on one side of the connecting sleeve, a U-shaped frame buckle 1 is fixedly arranged in the middle of the spray gun body, a U-shaped frame buckle 2 is fixedly arranged on the back side of the U-shaped frame buckle 1, the U-shaped frame buckle 2 is clamped with the connecting sleeve, a surface of one side of the U-shaped frame buckle 2 is provided with a plurality of matching holes, and an inner side of the other side surface is provided with a sliding groove.

[0005] As a preferred implementation scheme of the technical solution of the present application, a pressure plate is provided on one side surface of the U-shaped frame buckle, connecting columns are provided at the four corners of the end surface of the pressure plate, a spring is embedded on the surface of the connecting column, and the pressure plate is elastically installed on one side surface of the U-shaped frame buckle through the connecting column and the spring, and a top rod aligned with the matching hole is integrally formed on the side surface of the pressure plate facing the U-shaped frame buckle.

[0006] As a preferred implementation of the technical solution of the present application, the number of push rods is two less than the number of matching holes, and the diameter of the push rod is 2 mm smaller than the inner diameter of the matching hole.

[0007] As a preferred implementation of the technical solution of the present application, a slider is fixedly provided on the side of the connecting sleeve facing away from the ball head buckle body, and when the ball head buckle body is snapped into any matching hole, the slider is embedded and connected with the sliding groove.

[0008] As a preferred implementation scheme of the technical solution of the present application, hinge hole one and hinge hole two are provided at the top of the trigger handle, axle pin two is embedded in hinge hole one, axle pin one is embedded in hinge hole two, and a plurality of matching holes are provided on a circle with hinge hole one as the center and the distance from hinge hole one to the ball head buckle body as the radius.

[0009] As a preferred implementation of the technical solution of the present application, the slide groove is an arc-shaped groove, and the slide groove is arranged on a circumference with the hinge hole 1 as the center and the distance from the hinge hole 1 to the slider as the radius.

[0010] As a preferred implementation of the technical solution of the present application, a connecting column passes through one end of the pressing plate and is clamped with a clamp for limiting the separation of the pressing plate and the connecting column.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The technical solution of the present application is that the connecting sleeve moves with the movement of the trigger handle, and the ball head buckle body of the connecting sleeve adaptively engages and limits on any matching hole, so that the trigger handle can hover at the position where the ball head buckle body engages with any matching hole. Therefore, when continuously spraying the medicine, there is no need to press the trigger handle all the time, thereby realizing constant pressure and constant flow spraying of the medicine, reducing the waste of the medicine and reducing the difficulty of manually controlling the constant pressure and constant flow spraying of the medicine.

[0013] 2. The technical solution of the present application presses the pressure plate to embed the push rod into the matching hole, thereby separating the ball head buckle body of the connecting sleeve from the matching hole. Since the push rod of the pressure plate is not set in the initial area of ​​the connecting sleeve, the trigger handle can quickly return to the initial position after the pressure plate is pressed, thereby improving the ease of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 A schematic diagram of the structure for realizing the trigger handle hovering at any position;

[0016] Figure 2 This is a front view of a pressure-feed spray gun for spraying according to the utility model;

[0017] Figure 3 It is a partial cross-sectional view of the connection sleeve;

[0018] Figure 4 It is a partial cross-sectional view of the connecting sleeve from the right side;

[0019] Figure 5 It is a partial cross-sectional view of the U-shaped frame buckle 2 from a top view angle.

[0020] In the figure: 1, trigger handle; 101, hinge hole 2; 102, hinge hole 1; 2, connecting sleeve; 201, slider; 3, ball head buckle body; 301, spring 2; 4, U-shaped frame buckle 2; 401, matching hole; 402, slide groove; 5, pressure plate; 501, connecting column; 502, spring 1; 503, push rod; 6, U-shaped frame buckle 1; 601, fastener; 7, spray gun body; 701, spray air pressure regulating valve; 702, spray flow regulating valve; 703, connecting seat. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1, as Figure 1-5 As shown, the utility model provides a technical solution: a pressure-feed spray gun for spraying, comprising a spray gun body 7, a spray air pressure regulating valve 701 for controlling the gas flow is arranged on the top of the spray gun body 7, a spray flow regulating valve 702 for controlling the flow of the agent is arranged on the top of the spray air pressure regulating valve 701, a connecting seat 703 is arranged on the top of the spray flow regulating valve 702, the outside of the connecting seat 703 is hingedly connected to the trigger handle 1 through an axle pin 2, the middle part of the trigger handle 1 is connected to the valve stem of the spray flow regulating valve 702 through an axle pin 1, a connecting sleeve 2 is sleeved on the outside of the bottom end of the trigger handle 1, a ball head buckle body 3 is elastically arranged on one side of the connecting sleeve 2, a U-shaped frame buckle 1 6 is fixedly arranged in the middle of the spray gun body 7, a U-shaped frame buckle 2 4 is fixedly arranged on the back side of the U-shaped frame buckle 1 6, the U-shaped frame buckle 2 4 is clamped with the connecting sleeve 2, a surface of one side of the U-shaped frame buckle 2 4 is provided with a plurality of matching holes 401, and a slide groove 402 is provided on the inner side of the other side surface.

[0023] In a specific embodiment of the present invention, the connection sleeve 2 is made of stainless steel, and its appearance is made according to the shape of the end of the trigger handle 1 and is formed by mold forming. A concave hole is opened on one side of the ball head buckle body 3, and a spring 201 is arranged in the concave hole to realize the elastic displacement of the ball head buckle body 3. The slider 201 is located in the slide groove 402. When the trigger handle 1 rotates along the hinge hole 102, the ball head buckle body 3 is elastically connected and moved along a plurality of matching holes 401 in sequence. The slider 201 slides on the internal track of the slide groove 402. The slider 201 cooperates with the slide groove 402 to improve the stability of the connection sleeve 2 moving on the U-shaped frame buckle 24. The U-shaped frame buckle 6 is connected to the outer wall surface of the middle part of the spray gun body 7, and can be welded or fastened by bolts 601. The U-shaped frame buckle 6 is fixedly connected to the spray gun body 7, and a matching slot is opened in the middle of the trigger handle 1 for linkage with the valve stem of the spray air pressure regulating valve 701. When the trigger handle 1 is pulled, the valve stems of the spray air pressure regulating valve 701 and the spray flow regulating valve 702 can be synchronously adjusted, so as to synchronously adjust the spray agent flow and the spray agent air pressure (the mechanical principle of synchronously adjusting the valve stems of the spray air pressure regulating valve 701 and the spray flow regulating valve 702 when the trigger handle 1 is pulled belongs to the current common technical structure, and no excessive principle description is made here), the head end of the spray flow regulating valve 702 is connected to the spray agent tank, and the bottom of the spray gun body 7 is connected to the high-pressure air source, and the high-pressure air source adjusts the output air pressure through the spray air pressure regulating valve 701.

[0024] In the preferred technical solution, a pressure plate 5 is provided on one side surface of the U-shaped frame buckle 6, and connecting columns 501 are provided at the four corners of the end surface of the pressure plate 5. A spring 502 is inlaid on the surface of the connecting column 501. The pressure plate 5 is elastically installed on the one side surface of the U-shaped frame buckle 6 through the connecting column 501 and the spring 502. The pressure plate 5 is integrally formed with a push rod 503 aligned with the matching hole 401 on the side surface facing the U-shaped frame buckle 6. The spring 502 realizes the elastic reset function of the pressure plate 5 after being pressed, and the push rod 503 is used to separate the ball head buckle body 3 from the matching hole 401.

[0025] In the preferred technical solution, the number of the push rods 503 is two less than the number of the matching holes 401. When the trigger handle 1 retracts to the initial position, the ball head buckle body 3 will cooperate with the two leftmost matching holes 401 among the several matching holes 401 to prevent the connecting sleeve 2 from separating from the U-shaped frame buckle 24. The diameter of the push rod 503 is 2 mm smaller than the inner diameter of the matching hole 401, so that the push rod 503 can be easily embedded in the matching hole 401.

[0026] In the preferred technical solution, a slider 201 is fixedly provided on the side of the connecting sleeve 2 facing away from the ball head buckle body 3. When the ball head buckle body 3 is snapped into any matching hole 401, the slider 201 is embedded and connected with the slide groove 402. The slider 201 cooperates with the slide groove 402 to improve the stability of the connecting sleeve 2 moving on the U-shaped frame buckle 24.

[0027] In the preferred technical solution, a hinge hole 102 and a hinge hole 101 are provided at the top of the trigger handle 1, the axle pin 2 is embedded in the hinge hole 102, the axle pin 1 is embedded in the hinge hole 101, and a plurality of matching holes 401 are provided on a circle with the hinge hole 102 as the center and the distance from the hinge hole 102 to the ball head buckle body 3 as the radius. The slide groove 402 is an arc groove, and the slide groove 402 is provided on a circle with the hinge hole 102 as the center and the distance from the hinge hole 102 to the slider 201 as the radius, so that when the trigger handle 1 rotates around the hinge hole 102, the ball head buckle body 3 can accurately match with the plurality of matching holes 401 in sequence, and at the same time the slider 201 can slide in the slide groove 402 without getting stuck.

[0028] In the preferred technical solution, the connecting column 501 passes through one end of the pressing plate 5 and is clamped with a clamp for limiting the separation of the pressing plate 5 and the connecting column 501 to prevent the pressing plate 5 from separating from the connecting column 501 .

[0029] Working principle: when the trigger handle 1 is not pressed, the ball buckle body 3 of the connecting sleeve 2 is embedded and matched with the leftmost matching hole 401 among the several matching holes 401. When the pressure plate 5 is pressed, the push rod 503 will not embed and fill the two leftmost matching holes 401 among the several matching holes 401. Since the ball buckle body 3 cooperates with the spring 2 301, the ball buckle body 3 can be clamped and separated in the several matching holes 401. When the trigger handle 1 rotates reversely around the hinge hole 102, the valve stems of the spray flow regulating valve 702 and the spray air pressure regulating valve 701 can be pushed to move, thereby adjusting the spray flow and spray air pressure. When the desired spraying flow rate and spraying air pressure effect are achieved, you only need to release the trigger handle 1, and the ball head buckle body 3 will engage with the nearest matching hole 401, so that the trigger handle 1 is suspended and positioned. At this time, the spraying agent is sprayed with a fixed spraying flow rate and spraying air pressure. When you need to stop spraying, you can press the pressure plate 5 so that all the top rods 503 of the pressure plate 5 are embedded in the matching hole 401, and the ball head buckle body 3 will be separated from the matching hole 401 until the trigger handle 1 returns to its initial position, at which time the ball head buckle body 3 will engage with the two leftmost matching holes 401 among the several matching holes 401, thereby stopping spraying.

Claims

1. A pressure-feed spray gun for spraying, comprising a spray gun body (7), a spray air pressure regulating valve (701) for controlling the gas flow rate is arranged at the top of the spray gun body (7), a spray flow regulating valve (702) for controlling the flow rate of a medicine is arranged at the top of the spray air pressure regulating valve (701), a connecting seat (703) is arranged at the top of the spray flow regulating valve (702), the outside of the connecting seat (703) is hingedly connected to a trigger handle (1) through a second shaft pin, and the middle part of the trigger handle (1) is connected to the valve stem of the spray flow regulating valve (702) through a first shaft pin, characterized in that: The bottom end of the trigger handle (1) is covered with a connecting sleeve (2), one side of the connecting sleeve (2) is elastically provided with a ball head buckle body (3), a U-shaped frame buckle 1 (6) is fixedly provided in the middle of the spray gun body (7), a U-shaped frame buckle 2 (4) is fixedly provided on the back side of the U-shaped frame buckle 1 (6), the U-shaped frame buckle 2 (4) is snap-fitted with the connecting sleeve (2), a plurality of matching holes (401) are provided on one side surface of the U-shaped frame buckle 2 (4), and a slide groove (402) is provided on the inner side of the other side surface.

2. A pressure-feed spray gun for spraying according to claim 1, characterized in that: A pressure plate (5) is provided on one side surface of the U-shaped frame buckle (6); connecting columns (501) are provided through the four corners of the end surface of the pressure plate (5); a spring (502) is embedded on the surface of the connecting column (501); the pressure plate (5) is elastically mounted on the one side surface of the U-shaped frame buckle (6) through the connecting column (501) and the spring (502); and a top rod (503) aligned with the matching hole (401) is integrally formed on the one side surface of the pressure plate (5) facing the U-shaped frame buckle (6).

3. A pressure-feed spray gun for spraying according to claim 2, characterized in that: The number of the push rods (503) is two less than the number of the matching holes (401), and the diameter of the push rods (503) is 2 mm smaller than the inner diameter of the matching holes (401).

4. A pressure-feed spray gun for spraying according to claim 1, characterized in that: A sliding block (201) is fixedly provided on a side of the connection sleeve (2) facing away from the ball head buckle body (3), and when the ball head buckle body (3) is snap-fitted into any of the matching holes (401), the sliding block (201) is embedded and matched with the sliding groove (402).

5. A pressure-feed spray gun for spraying according to claim 4, characterized in that: The trigger handle (1) is provided with a hinge hole 1 (102) and a hinge hole 2 (101) at the top end, the shaft pin 2 is embedded in the hinge hole 1 (102), the shaft pin 1 is embedded in the hinge hole 2 (101), and a plurality of matching holes (401) are provided on a circle with the hinge hole 1 (102) as the center and the distance from the hinge hole 1 (102) to the ball head buckle body (3) as the radius.

6. A pressure-feed spray gun for spraying according to claim 5, characterized in that: The slide groove (402) is an arc-shaped groove, and the slide groove (402) is arranged on a circumference with the hinge hole one (102) as the center and the distance from the hinge hole one (102) to the slider (201) as the radius.

7. A pressure-feed spray gun for spraying according to claim 2, characterized in that: One end of the connecting column (501) passing through the pressing plate (5) is clamped with a clamp used to limit the separation of the pressing plate (5) and the connecting column (501).

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