Multifunctional spray gun

Abstract

This invention belongs to the technical field of liquid atomizers, and more particularly to a multi-functional spray gun. The spray gun is equipped with a handle that is easy to grip with the four fingers of one hand and a pressure plate that can be pressed down with the thumb of one hand. The handle and pressure plate are hinged together, making one-handed operation more effortless and convenient. The spray gun is also equipped with a detachable spray head at the nozzle to meet the demand for spraying, and a detachable foam mist nozzle is also provided on the spray head to create foam from the atomized liquid ejected from the spray head, fulfilling the demand for foam spraying. The foam mist nozzle can be removed when the foam function is not required, and the spray head can be removed to spray only liquid when the spraying function is not required. With this configuration, it can meet different liquid spraying needs in different usage scenarios, is multi-functional, and is easy to operate.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid sprayers, and particularly relates to a multi-functional spray gun.

Background Art

[0002] Currently commercially available plastic spray guns are widely used for disinfection in public and household environments, spray for cleaning kitchens and toilets, gardening, flower arrangement, etc., and generally adopt a trigger drive structure. When in use, the trigger is pulled with the index finger, and the upper part of the container is gripped with other parts of the same hand. Although one-handed operation is possible, it is necessary to grip the container between the thumb and the space between the thumb and the index finger, and at the same time, press the trigger with the index finger and a plurality of other fingers to perform a pressurizing operation. Therefore, the operation requires relatively more force. Also, due to the constraints of the gripping method, the capacity of the container used is generally small, not suitable for large-capacity bottles, and the consumer experience is not satisfactory. Furthermore, conventional plastic spray guns have only a single spraying function and cannot meet the requirements of many usage scenarios where it is necessary to spray foam, or can only spray foam and cannot meet the requirements of spraying, and the existing spray guns have limited application scenarios.

Summary of the Invention

[0003] In order to solve the problems that the above spray gun is difficult to operate with one hand and has a single application scenario, the present invention provides a multi-functional spray gun. The technical means adopted by the present invention to solve its technical problems are as follows.

[0004] A multi-functional spray gun comprising: a lock cover mechanism to which a handle is fixedly connected; a spray mechanism including a connecting end and a spray rod that communicate internally, the connecting end being relatively slidable within the lock cover mechanism, the spray rod protruding outward from the lock cover mechanism; a pressure plate hinged to the spray mechanism and abutting against the upper part of the connecting end, the pressure plate being positioned in the same direction as the handle; and a pump suction mechanism including a suction chamber fixedly connected coaxially with the lock cover mechanism, a relatively slidable pump body member provided inside the suction chamber, the upper end of the pump body member being interlocked with the connecting end, and the lower end being A multifunctional spray gun comprising: a return spring that contacts the pump suction mechanism, which performs a reciprocating motion in pumping liquid / gas; a toothed cap that is rotatably mounted between the lock cover mechanism and the suction chamber and is detachably connected to a liquid container; a spray head that is detachably fitted to the front end of the spray rod and has a spray core inside that atomizes the sprayed liquid; and a foam mist nozzle that is detachably fitted to the front end of the spray head and has a foam mist chamber inside, with an intake hole on the circumferential side of the foam mist nozzle that connects the foam mist chamber to the outside in order to foam the atomized liquid.

[0005] Furthermore, a foam mist flip cap is hinged to the front end of the foam mist nozzle, and the foam mist flip cap is provided with a foam mist grid for further foaming the atomized liquid.

[0006] Furthermore, a locking groove is provided on the circumferential side of the foam mist flip cap, and a projection is provided at a corresponding position on the circumferential side of the foam mist nozzle, so that the locking groove and the projection engage and connect.

[0007] Furthermore, a lock cover locking portion is provided at the lower end of the lock cover mechanism, and a pump suction locking portion is provided at the upper end of the liquid absorption chamber. By engaging and connecting the lock cover locking portion and the pump suction locking portion, a detachable fixed connection is achieved between the lock cover mechanism and the liquid absorption chamber.

[0008] Furthermore, the pump body member includes a first pump column, a second pump column, and a piston. The first pump column has a tubular structure, the outer wall of its upper end is interlocked with the inner wall of the connecting end, and the first position regulating member is fixedly connected to the outer wall of the first pump column. The second pump column has a tubular structure, the outer wall of its upper end is compressed with the inner wall of the first pump column, a second position regulating member is fixedly connected to the outer wall of the second pump column, the bottom end of the second pump column is sealed and in contact with a return spring, and a liquid intake port is formed on the side wall of the second pump column. The piston is provided within the suction chamber and fitted onto the outer walls of the first and second pump columns. The piston is positioned between the first and second position restricting members. The first and second pump columns are slidable relative to the piston, and the maximum sliding stroke is equal to the distance from the first to the second position restricting member. When the piston contacts the second position restricting member, liquid cannot flow in from the suction port. The return spring biases the second pump column upward relative to the piston, causing the second position restricting member to contact the piston.

[0009] Furthermore, the suction chamber has a suction tube connected to its lower end, which extends to the bottom of the liquid container. A V-shaped opening is provided at the lower end of the suction chamber, and a freely movable ball valve is positioned inside the V-shaped opening. The diameter of the ball valve is larger than the diameter of the lower opening of the V-shaped opening. This prevents the liquid from flowing back into the suction tube after it has entered the suction chamber from the suction tube.

[0010] Furthermore, the handle and pressure plate are positioned in the same direction, the lock cover mechanism is provided with a rotating shaft hole, the pressure plate is provided with a convex shaft, and the pressure plate is hinged to the lock cover mechanism by the engagement of the convex shaft and the rotating shaft hole.

[0011] Furthermore, the spray gun also includes an external brake clamp, which can be clamped between the pressure plate and the upper end platform of the handle, thereby restricting the downward movement of the pressure plate.

[0012] Beneficial Effects of the Present Invention According to the present invention, a handle that is easy to grip with the four fingers of one hand and a pressure plate that can be pressed down with the thumb of one hand are provided, and since the handle and pressure plate are hinged together, one-handed operation becomes more labor-saving and convenient. In addition, a detachable spray head is provided at the nozzle of the spray gun to meet the demand for spraying, and a foam mist nozzle is provided that is detachably connected to the spray head, so that the atomized liquid sprayed from the spray head can be foamed up to meet the demand for foam spraying. When the foam function is not required, the foam mist nozzle can be removed, and when the spray function is not required, the spray head can be removed and only the liquid can be sprayed. With the above configuration, it is possible to meet different spraying needs in different usage scenarios, and it has many functions and is easy to operate. [Brief explanation of the drawing]

[0013] The present invention will be further described below with reference to the drawings and specific embodiments. [Figure 1] This is a cross-sectional view of the spray gun of the present invention. [Figure 2] This is a cross-sectional view of a spray gun equipped with a spray head according to the present invention. [Figure 3] This is a cross-sectional view of a spray gun equipped with a foam mist nozzle according to the present invention. [Figure 4] This is a partially enlarged view of area A of the present invention. [Figure 5] This is a partially enlarged view of region B of the present invention. [Figure 6] This is a partially enlarged view of region C of the present invention. [Figure 7] This is a cross-sectional view of the lock cover of the present invention. [Figure 8]This is a plan view of the pressure plate of the present invention. [Figure 9] This is a cross-sectional view of the discharge port of the present invention. [Figure 10] This is a three-dimensional view of the foam mist nozzle of the present invention. [Figure 11] This is a cross-sectional view of the pump suction mechanism of the present invention.

[0014] Description of Reference Numerals <00,00077>100, Lock Cover Mechanism; 101, Handle; 102, Rotating Shaft Hole; 103, Lock Cover Locking Portion; 200, Pressure Plate; 201, Convex Shaft; 300, Liquid Spraying Mechanism; 301, Connection End; 302, Liquid Spraying Rod; 400, Foam Mist Nozzle; 401, Air Intake Hole; 402, Foam Mist Flip Cap; 403, Foam Mist Grid; 404, Foam Mist Chamber; 405, Locking Strip; 406, Projection; 500, Pump Suction Mechanism; 501, Liquid Suction Chamber; 502, Suction Tube; 503, Pump Suction Locking Portion; 504, First Pump Column; 5041, First Position Restricting Member; 505, Second Pump Column; 5051, Liquid Suction Port; 5052, Second Position Restricting Member; 506, Piston; 507, Return Spring; 508, Ball Valve; 509, V-shaped Pipe Mouth; 600, Toothed Cap; 601, Convex Pattern; 700, Spray Head; 701, Spray Core; 800, Brake Clamp.

Embodiments for Carrying Out the Invention

[0015] To better understand the object, structure and function of the present invention, the multifunctional spray gun of the present invention will be described in more detail below with reference to the drawings.

[0016] Referring to Figures 1 to 11, the spray gun includes a lock cover mechanism 100, to which a handle 101 for one-handed gripping is fixedly connected. A spray mechanism 300 is provided inside the lock cover mechanism 100, which includes a connecting end 301 and a spray rod 302 that communicate internally. The connecting end 301 is provided inside the lock cover mechanism 100 and is relatively slidable, while the spray rod 302 extends from the lock cover mechanism 100 to discharge liquid. The lock cover mechanism 100 is also provided with a rotating shaft hole 102, and the pressure plate 200 is hinged to the lock cover mechanism 100 by the engagement of a convex shaft 201 and the rotating shaft hole 102. The pressure plate 200 and the handle 101 are positioned in the same direction, making it easy to grip and press with one hand. The lower part of the pressure plate 200 abuts against the upper part of the connecting end 301, and the connecting end 301 can be slid by pressing the pressure plate 200. The spray gun further includes a pump suction mechanism 500, which includes a liquid suction chamber 501. A pump suction locking portion 503 is provided at the upper end of the liquid suction chamber 501, and a lock cover locking portion 103 is provided at the lower end of the lock cover mechanism 100. The lock cover locking portion 103 and the pump suction locking portion 503 are engaged and connected, thereby achieving a detachable fixed connection between the lock cover mechanism 100 and the liquid suction chamber 501. A relatively slidable pump body member is provided inside the liquid suction chamber 501, the upper end of which is interlocked with a connecting end 301, and the lower end of which abuts against a return spring 507. When the pressure plate 200 is pressed, the connecting end 301 slides downward, and the connecting end 301 further slides the pump body member downward relative to the suction chamber 501 to pump in liquid. When the pressure is released, the return spring 507 returns the member to its original position, and the pump suction and liquid spraying operations are performed by repeating the above operation. A toothed cap 600 that can rotate relative to the lock cover mechanism 100 is provided between the suction chamber 501, and a raised pattern 601 is provided on the inside of the toothed cap 600 to facilitate screw connection or engagement connection between the toothed cap 600 and the liquid container. A detachable spray head 700 is fitted onto the front end of the spray rod 302, and a spray core 701 for atomizing the sprayed liquid is provided inside the spray head 700.A detachable foam mist nozzle 400 is connected to the front end of the spray head 700. A foam mist chamber 404 is provided inside the foam mist nozzle 400, and air intake holes 401 for communicating the foam mist chamber 404 with the outside are provided on the peripheral side of the foam mist nozzle 400. The atomized liquid ejected from the spray head 700 is initially mixed with the gas flowing in from the foam mist chamber 404 and the side air intake holes 401 under the shielding of the chamber wall of the foam mist chamber 404. When the liquid contains a certain surfactant, a foaming effect occurs, and it is ejected in the form of foam from the front end of the foam mist nozzle 400, corresponding to the application scene that requires foam. A foam mist flip cap 402 is hingedly connected to the front end of the foam mist nozzle 400, and a foam mist grid 403 is provided on the foam mist flip cap 402. The foam ejected from the front end of the foam mist nozzle 400 is further sufficiently mixed with air under the shielding and disturbance of the radial grid of the foam mist grid 403 to form richer foam, and is ejected as relatively concentrated foam through the gaps between the radial grids of the foam mist grid 403, forming more foam and corresponding to the application scene that requires a large amount of foam.

[0017] Further referring to FIG. 6, a locking strip 405 is provided on the peripheral side of the foam mist flip cap 402, and a protrusion 406 is provided at the corresponding position on the peripheral side of the foam mist nozzle 400. By engaging and connecting with the locking strip 405, the foam mist flip cap 402 can be closely engaged with the front end of the foam mist nozzle 400.

[0018] Referring further to Figures 4 and 11, the pump body components include a first pump column 504, a second pump column 505, and a piston 506. The first pump column 504 has a tubular structure, and its upper outer wall is interference-fitted with the inner wall of the connecting end 301, and a first position regulating member 5041 is fixedly connected to the outer wall of the first pump column 540. The second pump column 505 also has a tubular structure, and its upper outer wall is interference-fitted with the inner wall of the first pump column 504, and a second position regulating member 5052 is fixedly connected to the outer wall of the second pump column 505. The bottom end of the second pump column 505 is sealed and in contact with a return spring 507, and a liquid intake port 5051 is formed on the side wall of the second pump column 505, allowing liquid to flow into the spray pipeline formed by the second pump column 505, the first pump column 504, and the spray mechanism 100. The piston 506 is provided within the suction chamber 501 and is capable of piston motion. Simultaneously, the piston 506 is slidably fitted onto the outer circumferences of the first pump column 504 and the second pump column 505, and is positioned between the first position restricting member 5041 and the second position restricting member 5052. The slidable stroke of the piston 506 relative to the first pump column 504 and the second pump column 505 is equal to the distance from the first position restricting member 5041 to the second position restricting member 5052. The piston 506 is preferably a Y-shaped rubber ring. When the piston 506 contacts the second position restricting member 5052, liquid cannot flow in from the suction port 5051. The return spring 507 tends to move the second pump column 505 upward relative to the piston 506, biasing the second position restricting member 5052 in the direction of contact with the piston 506.

[0019] Referring further to Figure 5, a suction tube 502 extending to the bottom of the liquid container is connected to the lower end of the suction chamber 501. A V-shaped tube opening 509 is provided at the lower end of the suction chamber 501, and a freely movable ball valve 508 is placed inside the V-shaped tube opening 509. The diameter of the ball valve 508 is larger than the diameter of the tube opening. When liquid is pumped into the suction chamber 501 due to the pressure difference between the inside and outside, the ball valve 508 is moved upward by the impact of the liquid, opening the passage of the V-shaped tube opening 509. After the liquid flows from the suction tube 502 into the suction chamber 501, the ball valve 508 returns to the V-shaped tube opening 509 due to gravity, closing the passage and preventing the liquid in the suction chamber 501 from flowing back into the suction tube 502 due to gravity.

[0020] Referring further to Figures 1 to 3, the spray gun also includes an external brake clamp 800, which can be clamped between the pressure plate 200 and the handle 101. This restricts the downward movement of the pressure plate 200, preventing accidental contact with the pressure plate 200 and subsequent spraying of liquid during transport or other situations where it is not in use. After removing the brake clamp 800, the pressure plate 200 can be pressed normally to spray the liquid.

[0021] In summary, when the brake clamp 800 is removed and the spray gun is held with one hand and the pressure plate 200 is pressed, the pressure plate rotates relative to the lock cover mechanism 100, causing the connecting end 301 to slide downward relative to the lock cover mechanism 100. The connecting end 301 further slides the first pump column 504 and the second pump column 505 downward relative to the piston 506, releasing the piston 506 from contact with the second position regulating member 5052 and opening the passage of the suction port 5051. The first pump column 504 and the second pump column 505 continue to slide downward relative to the piston 506, causing the first position regulating member 5041 to contact and drive the piston 506, moving the piston 506 downward relative to the suction chamber 501. At this time, the V-shaped pipe opening 509 at the lower end of the suction chamber 501 is closed by the ball valve 508, and the gas / liquid inside the suction chamber 501 is compressed by the piston 506 and flows from the suction port 5051 into the passage of the first pump column 504 and the second pump column 505, and is ejected from the spray mechanism 300. Subsequently, when the pressure plate 200 is released, the second pump column 505 is acted upon by the return spring 507 to return the first pump column 504, the connecting end 301 and the pressure plate 200 upward, the second position regulating member 5052 comes into contact with the piston 506 and closes the suction port 5051, and further moves the piston 506 upward. At this time, the pressure inside the suction chamber 501 decreases, the suction tube 502 draws the liquid from the liquid container into the suction chamber 501, the ball valve 508 is pushed up and opened by the upward force of the liquid, the passage of the V-shaped tube opening 509 is opened, the gas / liquid flows into the suction chamber 501 and the pressure equalizes, after which the ball valve 508 returns to the V-shaped tube opening 509 due to gravity and closes the passage. By repeating the above pressing and releasing operations, the liquid in the liquid container is continuously ejected from the spray rod 302. At this time, if a spray head 700 is connected to the front end of the spray rod 302, the liquid ejected from the spray rod 302 is atomized by the spray core 701 and ejected as mist droplets. Furthermore, if a foam mist nozzle 400 is connected to the front end of the spray head 700, the mist droplets are mixed with gas by the action of the foam mist nozzle 400 to form bubbles and are ejected in the form of bubbles.Furthermore, closing the foam mist flip cap 402 at this time allows for the release of even more foam. The present invention is easy to operate with one hand, and by switching the nozzle member, it can be switched between liquid spraying mode, atomized droplet spraying mode, and foam spraying mode, making it applicable to a variety of needs in different usage scenarios.

[0022] It is understood that the present invention is described by some embodiments, and that those skilled in the art know that various modifications or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, these features and embodiments can be modified to suit specific circumstances and materials based on the teachings of the invention, without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments included in the claims are within the scope of the invention.

Claims

1. It is a multi-functional spray gun, A lock cover mechanism (100) to which a handle (101) is fixedly connected, A spray mechanism (300) includes a connecting end (301) and a spray rod (302) that communicate internally, wherein the connecting end (301) is provided to be slidably relative to the lock cover mechanism (100), and the spray rod (302) protrudes outward from the lock cover mechanism (100). A pressure plate (200) is hinged to the spray mechanism (300) and abuts against the upper part of the connection end (301), and the pressure plate (200) is positioned in the same direction as the handle (101), A pump suction mechanism (500) includes a liquid suction chamber (501) fixedly connected coaxially to the lock cover mechanism (100), wherein a relatively slidable pump body member is provided inside the liquid suction chamber (501), the upper end of the pump body member is interlocked with the connecting end (301), and the lower end abuts against a return spring (507), and the pump suction mechanism (500) performs a reciprocating motion in pump suction of liquid / gas. A toothed cap (600) is rotatably mounted between the lock cover mechanism (100) and the suction chamber (501), and is detachably connected to the liquid container. A spray head (700) is provided, which is detachably fitted onto the front end of the spray rod (302) and has a spray core (701) inside that atomizes the liquid being sprayed. A multi-functional spray gun characterized by a foam mist nozzle (400) which is removably fitted onto the front end of the spray head (700), has a foam mist chamber (404) inside, and has an air intake hole (401) on the circumferential side of the foam mist nozzle (400) that connects the foam mist chamber (404) to the outside in order to foam the atomized liquid.

2. A multifunctional spray gun according to claim 1, characterized in that a foam mist flip cap (402) is hinged to the front end of the foam mist nozzle (400), and the foam mist flip cap (402) is provided with a foam mist grid (403) for further foaming the atomized liquid.

3. The multifunctional spray gun according to claim 2, characterized in that a locking ridge (405) is provided on the circumferential side of the foam mist flip cap (402), a projection (406) is provided at a corresponding position on the circumferential side of the foam mist nozzle (400), and the locking ridge (405) and the projection (406) are engaged and connected.

4. A lock cover locking portion (103) is provided at the lower end of the lock cover mechanism (100), and a pump suction locking portion (503) is provided at the upper end of the liquid suction chamber (501), and the lock cover locking portion (103) and the pump suction locking portion (503) are engaged and connected to realize a detachable fixed connection between the lock cover mechanism (100) and the liquid suction chamber (501), as described in claim 1.

5. The pump body member includes a first pump column (504), a second pump column (505), and a piston (506). The first pump column (504) has a tubular structure, and its upper outer wall is interlocked with the inner wall of the connecting end (301), and the first position regulating member (5041) is fixedly connected to the outer wall of the first pump column (504). The second pump column (505) has a tubular structure, the outer wall of its upper end is compressed with the inner wall of the first pump column (504), a second position regulating member (5052) is fixedly connected to the outer wall of the second pump column (505), the bottom end of the second pump column (505) is sealed and in contact with a return spring (507), and a liquid intake port (5051) is formed on the side wall of the second pump column (505). The piston (506) is provided within the suction chamber (501) and fitted onto the outer walls of the first pump column (504) and the second pump column (505). The piston (506) is located between the first position regulating member (5041) and the second position regulating member (5052). The first pump column (504) and the second pump column (505) are slidable relative to the piston (506), and the maximum sliding stroke is the first position regulating member (5041). The multi-functional spray gun according to claim 4, characterized in that the distance from the second position restricting member (5052) is equal to the distance from the second position restricting member (5051), and when the piston (506) comes into contact with the second position restricting member (5052), liquid cannot flow in from the suction port (5051), and the return spring (507) biases the second pump column (505) upward relative to the piston (506), causing the second position restricting member (5052) to come into contact with the piston (506).

6. A suction tube (502) extending to the bottom of a liquid container is connected to the lower end of the suction chamber (501), a V-shaped tube opening (509) is provided at the lower end of the suction chamber (501), a freely movable ball valve (508) is positioned inside the V-shaped tube opening (509), and the diameter of the ball valve (508) is larger than the diameter of the lower end opening of the V-shaped tube opening (509), characterized in that the multifunctional spray gun is as described in claim 5.

7. The multi-functional spray gun according to claim 1, characterized in that the handle (101) and the pressure plate (200) are arranged in the same direction, the lock cover mechanism (100) is provided with a rotating shaft hole (102), the pressure plate (200) is provided with a convex shaft (201), and the pressure plate (200) is hinge-connected to the lock cover mechanism (100) by engagement between the convex shaft (201) and the rotating shaft hole (102).

8. The multifunctional spray gun according to claim 7, further comprising an external brake clamp (800), the brake clamp (800) being clampable between the pressure plate (200) and the upper end platform of the handle (101), thereby restricting the downward movement of the pressure plate (200).

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