Double-runner trigger

Abstract

The utility model discloses a double-flow-channel trigger which comprises a shell, a water inlet connector, a gas inlet connector, a water outlet connector and a gas outlet connector are connected to the shell, a main shell is connected to the interior of the shell, a double-channel mechanism allowing two kinds of fluid to flow independently is arranged in the main shell, a water inlet and a gas inlet are formed in the lower portion of the main shell, and a short pipe is connected between the water inlet connector and the gas inlet connector. A water outlet channel and an air outlet channel are arranged at the front end of the shell, are coaxially matched and are divided into two parallel outlets through an outlet connector, a handle shaft is connected in the shell, a trigger handle is rotatably connected to the handle shaft, a supporting plate is connected to the upper portion of the trigger handle, and a limiting pin is rotatably connected to the lower end of the trigger handle. The trigger handle is used for prying the ejector pin in the main shell to open the non-interfering dual-channel structure, so that media conveyed by the water inlet short pipe and the air inlet short pipe can be conveyed out from the water outlet connector and the air outlet connector which are independent, and the effect that the two media are conveyed in a non-interfering mode is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of triggers, in particular to a double-flow channel trigger. Background Art

[0002] The spray gun trigger is a device that controls the flow of fluid. Spray guns are categorized into two types: standard pressure and pressurized. Other types include pressure-type, Carel-type, and automatic recovery types. In industrial applications, spray guns can be directly loaded with paint. These simple guns can be installed in automated equipment such as automatic glue sprayers, automatic glue applicators, automatic paint sprayers, and coating machines.

[0003] The trigger air circuit is connected to the bottom of the gun handle. The trigger pries the air piston to open the air passage. Since the other end of the air piston is a liquid piston, as the piston rod moves, the liquid piston also opens. Liquid enters the head cavity from the front of the gun handle. There, it can be self-priming or pressurized. It mixes with air through the front nozzle and is sprayed out as an atomized spray. This type of spray gun is generally used in the paint spraying industry. It is relatively small and mostly uses self-priming feeding. Due to the small air inlet and the pulsating air pressure, the self-priming stability is relatively poor. If the liquid is supplied through the front pipe, the tension and obstruction of the pipe will cause operational inconvenience.

[0004] For spray guns with dual gas and liquid pipes connected to the rear of the gun handle, a trigger is used to pry two pistons in the same direction to simultaneously open the gas and liquid channels, allowing the two fluids to mix directly in the trigger at a specific mixing ratio before being sprayed out of the gun head. This type of spray gun may not have an independent gas and liquid channel downstream of the trigger switch, making it impossible to mix gas and liquid in other areas and hindering flexible operation.

[0005] Based on this, a dual-channel trigger is proposed. Utility Model Content

[0006] The purpose of the utility model is to solve the above problems and to provide a double-channel trigger.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A dual-channel trigger comprises an outer shell, to which is connected a water inlet joint, an air inlet joint and a water and air outlet joint, to which are connected a water outlet short pipe and an air outlet short pipe, the inner part of the outer shell is connected to a main shell, a water inlet short pipe is connected between the main shell and the water inlet joint, and an air inlet short pipe is connected between the main shell and the air inlet joint, a handle shaft is connected inside the outer shell, a trigger handle is rotatably connected to the handle shaft, a water outlet channel and an air outlet channel are provided in the water outlet and air outlet joint, a water inlet and air inlet hole is provided in the main shell, and a dual-channel mechanism for independently flowing two fluids is provided inside the main shell.

[0009] Preferably, the lower end of the trigger handle is rotatably connected to a limit pin, and a support plate is connected to the trigger handle.

[0010] Preferably, the air inlet short pipe is arranged on one side of the water inlet short pipe, and the air inlet short pipe and the water inlet short pipe are arranged side by side in the shell.

[0011] Preferably, one end of the water outlet short pipe is connected to the water outlet channel, and one end of the air outlet short pipe is connected to the air outlet channel.

[0012] Preferably, the dual-channel mechanism includes a spring seat, a mounting hole is opened on the main shell, the spring seat is connected to the mounting hole, a sealing spring and a steel ball are connected in the spring seat, a pin seat is connected in the main shell, a pushing pin is slidably connected to the pin seat, and one end of the pushing pin is connected to a connecting plate.

[0013] Preferably, a through hole is provided on the spring seat.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] 1. The present application adopts a main shell structure and utilizes a dual-channel structure in the main shell that does not interfere with each other, so that the medium transported through the two inlet short tubes can be transported out from two independent outlet short tubes, thereby achieving the effect of transporting the two media without interfering with each other. The outlet can be made into a coaxial inner and outer double tube or a separate double tube, which facilitates the mixing of the two fluids at any required location.

[0016] 2. This application uses a connecting plate structure to enable the pipelines used to transport two media to be opened or closed at the same time, so that the trigger can be widely used in various handheld dual-fluid mixing and atomization devices. The unique channel design helps to effectively utilize the size space, conforms to manual operation habits, and can achieve a larger flow rate injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shows a schematic structural diagram of the entire trigger provided according to an embodiment of the utility model;

[0018] Figure 2 A schematic structural diagram of the trigger handle connection provided according to an embodiment of the present utility model is shown;

[0019] Figure 3 A schematic diagram of the structure inside the housing according to an embodiment of the present utility model is shown;

[0020] Figure 4 A schematic diagram of the explosion structure of the main shell connection provided according to an embodiment of the present utility model is shown;

[0021] Figure 5 A schematic diagram of a half-section structure of a water outlet and air outlet joint provided according to an embodiment of the present utility model is shown;

[0022] Figure 6 A schematic diagram of the explosion structure of the sealing spring connection provided according to an embodiment of the present utility model is shown;

[0023] Figure 7 A schematic structural diagram of the water and air inlet holes provided according to an embodiment of the utility model is shown.

[0024] Legend:

[0025] 1. Outer shell; 2. Water inlet connector; 201. Air inlet connector; 3. Water and air outlet connector; 4. Water outlet short pipe; 401. Air outlet short pipe; 5. Trigger handle; 6. Limit pin; 7. Water inlet short pipe; 701. Air inlet short pipe; 8. Handle shaft; 9. Support plate; 10. Connecting plate; 11. Main shell; 12. Mounting hole; 13. Water outlet channel; 14. Air outlet channel; 15. Spring seat; 16. Ejector pin seat; 17. Push ejector pin; 18. Through hole; 19. Steel ball; 20. Sealing spring; 21. Water and air inlet holes. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 7 , the utility model provides a technical solution:

[0028] A dual-channel trigger includes an outer shell 1, to which is connected a water inlet connector 2, an air inlet connector 201, and a water and air outlet connector 3, to which is connected a water outlet short pipe 4 and an air outlet short pipe 401, a main shell 11 is connected inside the outer shell 1, a water inlet short pipe 7 is connected between the main shell 11 and the water inlet connector 2, an air inlet short pipe 701 is connected between the main shell 11 and the air inlet connector 201, a handle shaft 8 is connected inside the outer shell 1, to which is rotatably connected a trigger handle 5, a water outlet channel 13 and an air outlet channel 14 are provided in the water outlet and air outlet connector 3, a water inlet and air inlet hole 21 is provided in the main shell 11, and a dual-channel mechanism for independently flowing two fluids is provided in the main shell 11.

[0029] Specifically, such as Figure 1 and Figure 3As shown, the lower end of the trigger handle 5 is rotatably connected to the limit pin 6, and the trigger handle 5 is connected to a support plate 9. The limit pin 6 serves to limit the trigger handle 5 to ensure that the internal channel is in a sealed state when the trigger is not in use. When in use, the limit pin 6 can be flipped so that the limit pin 6 is buckled on the trigger handle 5. The provision of the support plate 9 structure can reduce the structural wear when the trigger handle 5 and the connecting plate 10 structure abut against each other.

[0030] Specifically, such as Figure 4 and Figure 7 As shown, the air inlet short pipe 701 is arranged on one side of the water inlet short pipe 7, and the air inlet short pipe 701 and the water inlet short pipe 7 are arranged side by side in the outer shell 1, one end of the air inlet short pipe 701 is connected to the air inlet joint 201, and the other end of the air inlet short pipe 701 is connected to the water inlet and air inlet hole 21 on the main shell 11, wherein there are two water inlet and air inlet holes 21, which are used for water intake and air intake respectively, and the two water inlet and air inlet holes 21 are independently communicated with the two spring seats 15.

[0031] Specifically, such as Figure 4 and Figure 5 As shown, one end of the water outlet short pipe 4 is connected to the water outlet channel 13, and one end of the air outlet short pipe 401 is connected to the air outlet channel 14. The two fluids enter the outlet cavity with a double-layer annular channel again through holes in different directions in their respective lower cavities.

[0032] Specifically, such as Figure 5 and Figure 6 As shown, the dual-channel mechanism includes a spring seat 15, a mounting hole 12 is opened on the main shell 11, and the spring seat 15 is connected to the mounting hole 12. The sealing of one end of the mounting hole 12 is ensured by the spring seat 15, and the sealing of the other end of the main shell 11 is ensured by the ejector seat 16. A sealing spring 20 and a steel ball 19 are connected to the spring seat 15. One end of the sealing spring 20 is connected to the inside of the spring seat 15, and the other end of the sealing spring 20 abuts on the steel ball 19. The main shell 11 is connected to the ejector seat 16, and a pushing ejector 17 is slidably connected to the ejector seat 16. One end of the pushing ejector 17 is connected to the connecting plate 10.

[0033] Specifically, such as Figure 5 As shown, a through hole 18 is provided on the spring seat 15. There are multiple through holes 18, and the multiple through holes 18 are evenly arranged around the spring seat 15. The arrangement of this structure increases the fluid communication path, thereby achieving a larger flow rate. The through holes 18 are all opened in the upstream cavity part, and the penetration of this part will not affect the sealing of the downstream cavity.

[0034] In summary, the present embodiment provides a dual-channel trigger, the main structure of the trigger is a main shell 11, wherein the main shell 11 is composed of an upstream cavity and a downstream cavity, wherein the upstream cavity includes a spring seat 15, a sealing spring 20 and a steel ball 19 structure, wherein the upstream cavity relies on the steel ball 19 structure to complete the sealing, and the steel ball 19 structure relies on the sealing spring 20 and the fluid pressure to squeeze the structure to maintain a sealed state, and the downstream cavity mainly plays a role in opening the push structure between the upstream cavity and the downstream cavity, that is, the downstream cavity is composed of a ejector pin seat 16 and a push ejector pin 17, which can drive the trigger handle 5 upward by pressing the trigger handle 5. The support plate 9 contacts the connecting plate 10, thereby driving the ejector pin 17 to move in the ejector pin seat 16, thereby pushing the steel ball 19 to overcome the sealing spring 20 and the fluid pressure displacement. At this time, the two independent chambers inside are opened, and the fluid can be transferred from the water inlet short pipe 7 to the water outlet short pipe 4 in the main shell 11. Through this device, the transportation of two media without interfering with each other can be controlled at the same time, and the two media are not limited to water. Normally, one channel is gas and the other channel is water. It can also be any two fluids, which is convenient for configuring different gun heads. The unique channel design helps to effectively utilize the size space, conforms to manual operation habits, and can achieve a larger flow rate.

[0035] The above description of the embodiments is intended to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-channel trigger, comprising a housing (1), characterized in that: The housing (1) is connected to a water inlet joint (2), an air inlet joint (201), and a water outlet and air outlet joint (3); the water outlet and air outlet joint (3) is connected to a water outlet short pipe (4) and an air outlet short pipe (401); the housing (1) is internally connected to a main housing (11); a water inlet short pipe (7) is connected between the main housing (11) and the water inlet joint (2); an air inlet short pipe (701) is connected between the main housing (11) and the air inlet joint (201); a handle shaft (8) is connected inside the housing (1); a trigger handle (5) is rotatably connected to the handle shaft (8); a water outlet channel (13) and an air outlet channel (14) are provided in the water outlet and air outlet joint (3); a water inlet and air inlet hole (21) is provided in the main housing (11); and a dual-channel mechanism for independently flowing two fluids is provided in the main housing (11).

2. A dual-channel trigger according to claim 1, characterized in that: The lower end of the trigger handle (5) is rotatably connected to a limit pin (6), and a support plate (9) is connected to the trigger handle (5).

3. The dual-channel trigger according to claim 1, characterized in that: The air inlet short pipe (701) is arranged on one side of the water inlet short pipe (7), and the air inlet short pipe (701) and the water inlet short pipe (7) are arranged side by side in the housing (1).

4. The dual-channel trigger according to claim 1, characterized in that: One end of the water outlet short pipe (4) is interconnected with the water outlet channel (13), and one end of the air outlet short pipe (401) is interconnected with the air outlet channel (14).

5. The dual-channel trigger according to claim 1, characterized in that: The dual-channel mechanism includes a spring seat (15), a mounting hole (12) is provided on the main housing (11), the spring seat (15) is connected to the mounting hole (12), a sealing spring (20) and a steel ball (19) are connected in the spring seat (15), a thimble seat (16) is connected in the main housing (11), a push thimble (17) is slidably connected to the thimble seat (16), and one end of the push thimble (17) is connected to the connecting plate (10).

6. A dual-channel trigger according to claim 5, characterized in that: A through hole (18) is provided on the spring seat (15).

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