Spray gun

Abstract

A spray gun, comprising a spray gun body (100) and a liquid bottle (200). The spray gun body (100) comprises a handle (1), a transition part (2), and a gun body (3), which are connected in sequence from bottom to top. A muzzle (4) is disposed at a front end of the gun body (3), an electric air pump (5) is disposed in the interior of the handle (1), a circuit board (6) is disposed in the interior of the transition part (2), a storage battery (7) is disposed in the interior of the gun body (3), and an outwardly extending nozzle (8) is disposed in the muzzle (4). The handle (1) and the electric air pump (5) of the gun body (3) are each connected to the nozzle (8) by means of an airflow line (9), and the circuit board (6) is electrically connected to the storage battery (7) by means of a wire (11). The spray gun can generate twice as much air volume as a conventional single pump, which can effectively increase air pressure, and a spraying atomization effect is good.

Description

A spray gun TECHNICAL FIELD

[0001] The utility model relates to spray gun technical field especially relates to a spray gun. BACKGROUND

[0002] The spray gun is a kind of equipment using liquid or compressed air as power, and the spray gun can be directly filled with paint in industry, so that the paint is guided and impacted by compressed air, and paint atomization is realized, and the atomized paint can repair the local damaged paint surface on the vehicle.

[0003] The current spray gun generally has only one electric air pump, so that the compressed gas sprayed by the spray gun has the problem of too small air pressure or air volume, so that it is difficult to produce large-area mist paint, thereby affecting actual use.

[0004] UTILITY MODEL CONTENT

[0005] The utility model discloses a spray gun, to solve the technical problem that the current spray gun in prior art generally has only one electric air pump, so that the compressed gas sprayed by the spray gun has the problem of too small air pressure or air volume, so that it is difficult to produce large-area mist paint, thereby affecting actual use.

[0006] In order to realize the above-mentioned purpose, the technical scheme of the utility model provides a spray gun, which comprises a spray gun body and a liquid bottle, the spray gun body comprises a handle, a transition part and a gun body connected in sequence from bottom to top, a muzzle is arranged at the front end of the gun body, an electric air pump is arranged in the handle, a circuit board is arranged in the transition part, an electric air pump and a storage battery are arranged in the gun body, and a gas jet head is arranged in the muzzle and extends outward; the electric air pumps of the handle and the gun body are connected with the gas jet head through air flow pipelines respectively, the electric air pumps of the handle and the gun body are electrically connected with the circuit board through wires respectively, and the circuit board is electrically connected with the storage battery through wires; the liquid bottle comprises a bottle body and a spray needle, the spray needle is arranged on the bottle body, when the gas jet head and the spray needle are close to each other, the gas jetted out of the gas jet head can form negative pressure around the spray needle.

[0007] Further, the circuit board is electrically connected with a gas pressure adjusting button, the gas pressure adjusting button can be moved outward through the outer surface of the transition part, and when the gas pressure adjusting button is pressed, different gears of the working air pressure of the electric air pump can be switched.

[0008] Further, the circuit board is electrically connected with a plurality of gear display lamps, the plurality of gear display lamps pass through the outer surface of the transition portion, and the plurality of gear display lamps can display different gears of the working air pressure of the electric air pump.

[0009] Further, the circuit board is electrically connected with a charging port, the charging port passes through the outer surface of the transition portion, and when the charging port is inserted into a charging line for charging, the plurality of gear display lamps can also display different gears of the charging amount of the battery.

[0010] Further, the circuit board is electrically connected with a pressing switch, the pressing switch movably passes through the outer surface of the transition portion, and the pressing switch can control the start and stop of the spray gun body.

[0011] Further, the inside of the gun body is provided with a three-way pipe, the handle and the electric air pump of the gun body are connected with two pipe openings of the three-way pipe through air flow pipes, and the air jet head is connected with the other pipe opening of the three-way pipe through an air flow pipe.

[0012] Further, the liquid bottle is detachably installed below the gun port, a liquid cover is threadedly connected to the top of the bottle body, the bottom of the liquid cover is provided with a liquid suction pipe extending into the bottle body, the top of the liquid cover is threadedly connected with the spray needle, and the top edge of the liquid cover is provided with an air inlet hole communicating with the bottle body.

[0013] Further, the gun body extends forward and upward, the liquid bottle extends forward and upward, the included angle between the air jet head and the spray needle is an acute angle, the bottom end of the gun port is provided with a connecting bayonet, and the connecting bayonet is provided with a connecting plate; the rear upper end of the connecting plate is provided with a mounting bracket, and the front lower end of the connecting plate is provided with a mounting sleeve; the mounting bracket is assembled in the gun port, the air jet head passes through the mounting bracket, the mounting sleeve is threadedly connected to the top of the liquid cover, the spray needle passes through the mounting sleeve upward, and the air inlet hole leaves a gap with the mounting sleeve.

[0014] Further, the middle part of the connecting plate is provided with a rotating hole, the connecting bayonet is provided with a rotating shaft extending axially along the left and right, the rotating hole and the rotating shaft are rotationally matched to adjust the rotation angle of the connecting plate; the shell of the spray gun body is formed by locking two left and right half shells by screws, and the connecting plate can be locked and fixed; the shell of the spray gun body and the connecting plate are respectively made of shell plastic and plastic plate, and the hardness of the shell plastic is lower than that of the plastic plate.

[0015] Further, the spray gun further comprises a bottle cap, which is threadedly connected to the top of the liquid cover when the mounting sleeve is separated from the liquid cover; the top of the bottle cap is provided with a sealing end, and the bottom edge of the bottle cap is provided with a sealing edge, which can seal the spray needle and the air inlet hole, respectively; the bottle body is provided with a stirring bead; the bottom end of the liquid suction pipe is connected to the top end of the filter head; the bottom end of the filter head is provided with a filter screen in the middle; the bottom end of the filter head is provided with a plurality of support points; and adjacent two support points are provided with a liquid flow interval.

[0016] In summary, the technical scheme of the utility model has the following beneficial effects: the utility model discloses a structure design is reasonable, (1) through including spray gun body and liquid bottle, spray gun body includes handle, transition part, gun body that connect from below to top in proper order, the front end of gun body is equipped with gun port, the inside of handle is equipped with electric air pump, the inside of transition part is equipped with circuit board, the inside of gun body is equipped with electric air pump, battery, the gun port is equipped with the air jet head that stretches out to the outside;So that the inside of spray gun body has two electric air pumps.(2) through the electric air pump of handle, gun body respectively through air flow pipeline and air jet head connection, the electric air pump of handle, gun body respectively through wire and circuit board electric connection, circuit board passes through wire and battery electric connection;So can utilize battery for circuit board and two electric air pumps carry out power supply, and utilize circuit board control two electric air pump produce the change of gas amount size and air pressure size, then two electric air pump produces compressed gas respectively through air flow pipeline and gathers to air jet head, finally air jet head will compressed gas spray to the outside.(3) through liquid bottle including bottle body and spray needle, spray needle sets up on bottle body, when air jet head and spray needle are mutually close, the gas that air jet head sprays can form negative pressure in the vicinity of spray needle;So when air jet head sprays compressed gas to the outside, because air jet head and spray needle mutually close, therefore compressed gas when passing through the vicinity of spray needle, will form strong airflow in the vicinity of spray needle, thereby forming negative pressure environment (namely the pressure in the vicinity of spray needle at this time is less than the internal pressure of bottle body) in the vicinity of spray needle, at this time, the liquid (such as paint) in bottle body is driven by negative pressure and sprayed out through spray needle, and compressed gas and liquid are mixed and sprayed in front of gun port to form mist paint, thereby completing the spraying purpose.From the above analysis, the utility model controls the change of gas amount size and air pressure size produced by two electric air pumps through circuit board, so that the gas amount produced is twice that of a traditional single pump and the air pressure can be effectively increased, and the volume of a single electric air pump does not need to be increased, so that, in combination with the outward spraying of liquid (such as paint) by the spray needle, the area of the sprayed mist paint can be effectively increased, the spraying atomization effect is good, and use is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a side view of the utility model from a first perspective;

[0018] Fig. 2 is a side view of the second perspective of the utility model structure schematic diagram;

[0019] Fig. 3 is the first perspective of the utility model when removing the right shell side view structure schematic diagram;

[0020] Fig. 4 is the first perspective of the left shell of the utility model side view structure schematic diagram;

[0021] Fig. 5 is the first perspective of the utility model when removing the two shell side view structure schematic diagram;

[0022] Fig. 6 is the liquid bottle and connecting plate, jet head cooperation of the utility model when the three-dimensional structure schematic diagram;

[0023] Fig. 7 is the connecting plate of the utility model three-dimensional structure schematic diagram;

[0024] Fig. 8 is the liquid bottle and jet head cooperation of the utility model when the three-dimensional structure schematic diagram;

[0025] Fig. 9 is the liquid bottle of the utility model when removing the bottle body and the three-dimensional structure schematic diagram of jet head cooperation;

[0026] Fig. 10 is the liquid bottle and bottle cap cooperation of the utility model when the three-dimensional structure schematic diagram;

[0027] Fig. 11 is the three-dimensional structure schematic diagram of the bottle cap of the utility model;

[0028] Fig. 12 is the three-dimensional structure schematic diagram of the liquid suction tube and filter head cooperation of the utility model;

[0029] Fig. 13 is the three-dimensional structure schematic diagram of the filter head of the utility model;

[0030] Fig. 14 is another three-dimensional structure schematic diagram of the filter head of the utility model;

[0031] Mark explanation: 100-spray gun body, 200-liquid bottle, 300-connecting plate, 400-bottle cap.

[0032] 1-handle, 2-transition, 3-gun body, 4-muzzle, 5-electric air pump, 6-circuit board, 7-battery, 8-jet head, 9-air flow pipeline, 10-three-way pipe, 11-wire.

[0033] 401-connecting socket, 402-rotary shaft; 601-air pressure adjusting button, 602-gear display lamp, 603-charging port, 604-pressing switch; 2001-bottle body, 2002-liquid cover, 2003-liquid suction pipe, 2004-injection needle, 2005-air inlet hole, 2006-stirring bead, 2007-filter head, 2008-filter screen, 2009-supporting point, 2010-liquid flow interval; 3001-mounting frame, 3002-mounting sleeve, 3003-rotary hole, 3004-clearance; 4001-sealing end, 4002-sealing edge. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, but will not constitute the limitation on the protection scope of the utility model.

[0035] In the utility model, in order to describe more clearly, make the following explanation: the observer faces the drawing 1 and observes, the observer left side is set as rear, the observer right side is set as front, the observer front is set as left, the observer rear is set as right, the observer upper surface is set as upper, the observer lower surface is set as lower, it should be pointed out that the term "front end", "rear end", "left side", "right side", "middle part", "upper", "lower" in the text indicate the orientation or positional relationship for the orientation or positional relationship based on the drawing, only for the convenience of clearly describing the utility model, and is not instructing or implying that the structure or part indicated must have a particular orientation, with a particular orientation structure, therefore, cannot be understood as the limitation on the utility model. In addition, the term "first", "second", "third", "fourth" are only for the purpose of clarity or simplification of description, and cannot be understood as indicating or implying relative importance or quantity.

[0036] Referring to FIG. 1 to 14, the embodiment provides a spray gun, comprising a spray gun body 100 and a liquid bottle 200, the spray gun body 100 comprises a handle 1, a transition part 2 and a gun body 3 connected in sequence from bottom to top, the front end of the gun body 3 is provided with a muzzle 4, the inside of the handle 1 is provided with an electric air pump 5, the inside of the transition part 2 is provided with a circuit board 6, the inside of the gun body 3 is provided with the electric air pump 5 and a battery 7, the muzzle 4 is provided with a gas jet head 8 extending outward, the electric air pump 5 of the handle 1 and the gun body 3 is connected with the gas jet head 8 through a gas flow pipeline 9 respectively, the electric air pump 5 of the handle 1 and the gun body 3 is electrically connected with the circuit board 6 through a wire 11 respectively, the circuit board 6 is electrically connected with the battery 7 through the wire 11, the liquid bottle 200 comprises a bottle body 2001 and a spray needle 2004, the spray needle 2004 is arranged on the bottle body 2001, when the gas jet head 8 and the spray needle 2004 approach each other, the gas jetted out by the gas jet head 8 can form negative pressure near the spray needle 2004. Action: (1) by comprising a spray gun body and a liquid bottle, the spray gun body comprises a handle, a transition part and a gun body connected in sequence from bottom to top, the front end of the gun body is provided with a muzzle, the inside of the handle is provided with an electric air pump, the inside of the transition part is provided with a circuit board, the inside of the gun body is provided with the electric air pump and a battery, the muzzle is provided with a gas jet head extending outward, so that the inside of the spray gun body has two electric air pumps. (2) by the electric air pump of the handle and the gun body being connected with the gas jet head through a gas flow pipeline respectively, the electric air pump of the handle and the gun body being electrically connected with the circuit board through a wire respectively, the circuit board being electrically connected with the battery through a wire, so that the battery can be used to supply power for the circuit board and the two electric air pumps, and the circuit board can be used to control the change of the gas amount and the gas pressure generated by the two electric air pumps, then the compressed gas generated by the two electric air pumps is collected to the gas jet head through the gas flow pipeline, and finally the compressed gas is jetted out by the gas jet head. (3) by the liquid bottle comprising a bottle body and a spray needle, the spray needle is arranged on the bottle body, when the gas jet head and the spray needle approach each other, the gas jetted out by the gas jet head can form negative pressure near the spray needle, so that when the compressed gas is jetted out by the gas jet head, because the gas jet head and the spray needle approach each other, the compressed gas will form strong airflow near the spray needle when passing near the spray needle, so that a negative pressure environment is formed near the spray needle (that is, the pressure near the spray needle is smaller than the internal pressure of the bottle body at this time), at this time, the liquid (such as paint) in the bottle body is driven out by the negative pressure through the spray needle, and the compressed gas and the liquid are mixed and sprayed in front of the muzzle to form misty paint, thereby completing the spraying purpose. From the above analysis, it can be known that the circuit board is used to control the change of the gas amount and the gas pressure generated by the two electric air pumps, so that the gas amount generated is twice that of the traditional single pump and the gas pressure can be effectively increased, and the volume of the single electric air pump does not need to be increased, so that the liquid (such as paint) is jetted out by the spray needle, the area of the misty paint jetted out can be effectively increased, the spraying atomization effect is good, and the spray gun is convenient to use.In actual work, the program written on the circuit board can control the voltage of the motor of the electric air pump to change the motor speed, so as to control the air volume and air pressure generated by the air pump.

[0037] Specifically, the circuit board 6 is electrically connected with the air pressure adjusting button 601, which is movably outwardly exposed through the outer surface of the transition part 2. When the air pressure adjusting button 601 is pressed, different gears of the working air pressure of the electric air pump 5 can be switched. Effect: The air pressure adjusting button 601 can be used to switch to different gears of the air pressure as needed. In actual work, when the air pressure adjusting button 601 is pressed for a long time, the air pressure gear will be adjusted in a cycle among multiple gears (such as four gears). The gear will be set to the gear at which the button is released. The gear can have a memory function, so that when the machine is turned off and turned on again, it will automatically enter the previous gear.

[0038] Specifically, the circuit board 6 is further electrically connected with a plurality of gear display lamps 602, which are outwardly exposed through the outer surface of the transition part 2. The plurality of gear display lamps 602 can display different gears of the working air pressure of the electric air pump 5. Effect: The plurality of gear display lamps 602 can display which gear of the air pressure the electric air pump 5 is in, which is convenient for use.

[0039] Specifically, the circuit board 6 is further electrically connected with a charging port 603, which is outwardly exposed through the outer surface of the transition part 2. When the charging port 603 is inserted into the charging line for charging, the plurality of gear display lamps 602 can also display different gears of the charging capacity of the storage battery 7. Effect: When the charging port 603 is used for charging, the plurality of gear display lamps 602 can display which gear the storage battery 7 is in, so that the user can easily judge the remaining capacity of the storage battery.

[0040] Specifically, the circuit board 6 is further electrically connected with a press switch 604, which is movably outwardly exposed through the outer surface of the transition part 2. The press switch 604 can control the start and stop of the spray gun body. Effect: The press switch 604 can be pressed once to start the spray gun body and pressed again to stop the spray gun body. Alternatively, it can be set to be started by long pressing and stopped by releasing, so as to facilitate the use of the spray gun.

[0041] In actual work: 1. Press the switch 604 to start spraying, and display the pressure size of several gears, release the press switch 604 to stop. 2. In the state of spraying, short press the air pressure adjustment button 601 to switch between 1.2.3.4. gears. After setting which gear, the next time the machine is started, the default is to enter the last set gear. 3. Insert the charging line, and display the charging capacity, such as 25% one light flashing, 50% two lights flashing, 75% three lights flashing. When full, four lights are always on. It can be charged while spraying. 4. In the off state, short press the air pressure adjustment button 601 to switch between 1.2.3.4. gears, and after setting which gear, the next time the machine is started, the default is to enter the last set gear. Without operation, the light will be off after 5 seconds.

[0042] Specifically, the inside of the gun body 3 is also provided with a three-way pipe 10, and the electric air pump 5 of the handle 1 and the gun body 3 are connected with two pipe openings of the three-way pipe 10 through the airflow pipe 9 respectively, and the spray head 8 is connected with the other pipe opening of the three-way pipe 10 through the airflow pipe 9. Action: Through the setting of the three-way pipe 10, the airflow of the two electric air pumps 5 is conveniently converged to the spray head 8.

[0043] As preferred, the electric air pump 5 is a direct current vacuum air pump, and the charging port 603 is a USB charging port.

[0044] Specifically, the liquid bottle 200 can be detachably installed below the gun port 4, and the top of the bottle body 2001 is threadedly connected with a liquid cover 2002, the bottom of the liquid cover 2002 is provided with a liquid suction pipe 2003 extending into the bottle body 2001, the top of the liquid cover 2002 is threadedly connected with a spray needle 2004, and the top edge of the liquid cover 2002 is provided with an air inlet hole 2005 communicating with the bottle body 2001. Action: The liquid bottle 200 can be first detached, then the liquid cover 2002 is detached, new liquid is filled in the bottle body 2001, then the liquid cover 2002 is installed on the top of the bottle body 2001, and the liquid bottle 200 is reinstalled below the gun port 4. When working, the liquid in the bottle body 2001 is driven by negative pressure to flow upward to the spray needle 2004 through the liquid suction pipe 2003, and the air inlet hole 2005 can supplement air for the inside of the bottle body 2001. Since the spray needle 2004 is detachable, different caliber spray needles (such as 0.3mm, 0.5mm, 0.8mm, 1.2mm) can be replaced on the top of the liquid cover 2002 according to different needs. The spray gun body can also control the size of the sprayed liquid according to different caliber spray needles.

[0045] Specifically, the gun body 3 extends forward and upward, the liquid bottle 200 extends forward and upward, the included angle between the jet head 8 and the spray needle 2004 is an acute angle, the bottom end of the muzzle 4 is provided with a connecting bayonet 401, the connecting plate 300 is arranged in the connecting bayonet 401; the rear upper end of the connecting plate 300 is provided with a mounting bracket 3001, the front lower end of the connecting plate 300 is provided with a mounting sleeve 3002, the mounting bracket 3001 is assembled in the muzzle 4, the jet head 8 passes through the mounting bracket 3001, the mounting sleeve 3002 is threadedly connected to the top of the liquid cover 2002, the spray needle 2004 passes upward through the mounting sleeve 3002, and the air inlet hole 2005 is left with a gap 3004 from the mounting sleeve 3002. Effect: The acute angle between the jet head 8 and the spray needle 2004 makes the negative pressure cooperation and the liquid injection effect better between the two; the arrangement of the connecting plate 300 enables the spray gun body and the liquid bottle 200 to be detachably connected, and the arrangement of the gap facilitates the air inlet hole 2005 to supplement air into the bottle body. As a preferred, after assembly, the air outlet of the jet head 8 and the needle port of the spray needle 2004 should be on the same straight line, that is, the needle port of the spray needle 2004 is located on the axial center line of the air outlet of the jet head 8, instead of the needle port of the spray needle 2004 being higher or lower than the axial center line of the air outlet of the jet head 8. In this way, the effect of forming a negative pressure environment on the top of the spray needle 2004 is best.

[0046] Specifically, the middle part of the connecting plate 300 is provided with a rotating hole 3003, the connecting bayonet 401 is provided with a rotating shaft 402 extending axially along the left and right, and the rotating hole 3003 and the rotating shaft 402 are rotationally matched to adjust the rotation angle of the connecting plate 300; the shell of the spray gun body 100 is formed by locking two half shells by screws, and the connecting plate 300 can be locked and fixed; the shell and the connecting plate 300 are respectively made of shell plastic and plastic plate, and the hardness of the shell plastic is lower than that of the plastic plate. Effect: After the rotation angle of the connecting plate 300 is adjusted, the included angle between the jet head 8 and the spray needle 2004 is best, and the two half shells are locked by screws, so that the connecting plate 300 is locked and fixed. By the hardness of the shell plastic (such as nylon material) being lower than that of the plastic plate (such as pom material), the installation stability of the liquid bottle 200 is improved, and the working quality of the spray gun is improved.

[0047] Specifically, the spray gun further comprises a bottle cap 400, which is threadedly connected to the top of the liquid cover 2002 when the mounting sleeve 3002 is separated from the liquid cover 2002; the top of the bottle cap 400 is provided with a sealing end 4001, and the bottom edge of the bottle cap 400 is provided with a sealing edge 4002, the sealing end 4001 and the sealing edge 4002 can seal the spray needle 2004 and the air inlet hole 2005 respectively, the bottle body 2001 is provided with a stirring bead 2006, the bottom end of the liquid suction pipe 2003 is connected to the top end of a filter head 2007, the bottom end of the filter head 2007 is provided with a filter screen 2008 in the middle, and the bottom end edge of the filter head 2007 is provided with a plurality of support points 2009, and the liquid flow interval 2010 is formed between two adjacent support points 2009. Action: when spraying is needed, the bottle cap is unscrewed, the liquid bottle 200 is screwed into the screw hole of the mounting sleeve 3002 of the spray gun upwards, and it is confirmed that it has been screwed in place; after use, the liquid bottle 200 is screwed out of the screw hole of the mounting sleeve 3002 of the spray gun downwards, and the bottle cap 400 is threadedly connected to the top of the liquid cover 2002, so as to seal the inside of the bottle body. The setting of the stirring bead 2006 can shake the bottle for 1 minute before use to mix the liquid uniformly, and the stirring bead 2006 can improve the stirring effect. Through the setting of the filter head 2007, the inner bottom surface of the bottle body 2001 can be abutted by the plurality of support points 2009, the liquid can pass through the liquid flow interval 2010, the filter screen 2008 and the middle of the filter head 2007 in sequence, and then enter the liquid suction pipe 2003 upwards, so that the liquid can be filtered, and the liquid in the bottle body 2001 is sucked as much as possible, reducing the residual liquid.

[0048] In actual use: 1, the liquid (such as paint) is filled in the tightly screwed liquid bottle 200; 2, shake the liquid bottle 200, and the stirring bead 2006 stirs the liquid uniformly; 3, unscrew the bottle cap 400 and put it aside; 4, threadedly connect the mounting sleeve 3002 to the top of the liquid cover 2002, the spray needle 2004 penetrates the mounting sleeve 3002 upwards, and the air inlet hole 2005 has a gap 3004 with the mounting sleeve 3002; 5, press the press switch 604 to turn on the spray gun; 6, press the air pressure adjusting button 601 once or more times to adjust the spraying air pressure of the spray gun to the required gear; 7, the gas sprayed by the air jet head 8 causes a negative pressure above the spray needle 2004; 8, the spray needle sprays the liquid upwards, and the compressed gas and the liquid are mixed and sprayed in front of the gun port to form a mist of paint, thereby completing the spraying purpose.

[0049] The above is the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements are also considered within the protection scope of the present application.

Claims

1. A spray gun, comprising a spray gun body (100) and a liquid bottle (200), characterized in that: The spray gun body (100) includes a handle (1), a transition section (2), and a gun body (3) connected sequentially from bottom to top. The gun body (3) has a muzzle (4) at its front end. The handle (1) has an electric air pump (5) inside. The transition section (2) has a circuit board (6) inside. The gun body (3) has an electric air pump (5) and a battery (7) inside. The muzzle (4) has an outwardly protruding jet nozzle (8). The electric air pumps (5) of the handle (1) and the gun body (3) are respectively connected to the jet nozzle (8) through airflow pipes (9). The handle (1) and the electric air pump (5) of the gun body (3) are electrically connected to the circuit board (6) through wires (11), and the circuit board (6) is electrically connected to the battery (7) through wires (11); the liquid bottle (200) includes a bottle body (2001) and a spray needle (2004). The spray needle (2004) is disposed on the bottle body (2001). When the jet nozzle (8) and the spray needle (2004) are close to each other, the gas sprayed by the jet nozzle (8) can create a negative pressure near the spray needle (2004).

2. The spray gun according to claim 1, characterized in that: A pressure regulating button (601) is electrically connected to the circuit board (6), and the pressure regulating button (601) can move outward through the outer surface of the transition part (2); When the air pressure adjustment button (601) is pressed, it can be switched to different levels of the working air pressure of the electric air pump (5).

3. The spray gun according to claim 2, characterized in that: The circuit board (6) is also electrically connected to a plurality of gear indicator lights (602), which extend outward through the outer surface of the transition part (2) and can display different gears of the working air pressure of the electric air pump (5).

4. A spray gun according to claim 3, characterized in that: The circuit board (6) is also electrically connected to a charging port (603), which extends outward through the outer surface of the transition part (2). When a charging cable is inserted into the charging port (603) for charging, several of the level indicator lights (602) can also display the different levels of the charge level of the battery (7).

5. A spray gun according to any one of claims 1 to 4, characterized in that: A push switch (604) is also electrically connected to the circuit board (6). The push switch (604) can move outward through the outer surface of the transition part (2). The push switch (604) can control the start and stop of the spray gun body.

6. A spray gun according to any one of claims 1 to 4, characterized in that: The gun body (3) is also provided with a three-way pipe (10). The handle (1) and the electric air pump (5) of the gun body (3) are respectively connected to two ports of the three-way pipe (10) through airflow pipes (9). The jet head (8) is connected to the other port of the three-way pipe (10) through airflow pipes (9).

7. A spray gun according to any one of claims 1 to 4, characterized in that: The liquid bottle (200) is detachably installed below the nozzle (4). The top of the bottle body (2001) is threaded with a liquid cap (2002). The bottom of the liquid cap (2002) is provided with a liquid suction tube (2003) that extends into the bottle body (2001). The top of the liquid cap (2002) is threaded with the spray needle (2004). The top edge of the liquid cap (2002) is provided with an air inlet (2005), which communicates with the bottle body (2001).

8. A spray gun according to claim 7, characterized in that: The gun body (3) extends forward and upward, the liquid bottle (200) extends forward and upward, the angle between the jet head (8) and the spray needle (2004) is acute, the bottom end of the gun muzzle (4) is provided with a connecting bayonet (401), the connecting bayonet (401) is provided with a connecting plate (300); the upper rear end of the connecting plate (300) is provided with a mounting bracket (3001), the lower front end of the connecting plate (300) is provided with a mounting sleeve (3002), the mounting bracket (3001) is assembled in the gun muzzle (4), the jet head (8) passes through the mounting bracket (3001), the mounting sleeve (3002) is threaded to the top of the liquid cap (2002), the spray needle (2004) passes upward through the mounting sleeve (3002), and the air inlet (2005) and the mounting sleeve (3002) have a gap (3004).

9. A spray gun according to claim 8, characterized in that: The connecting plate (300) has a rotating hole (3003) in the middle, and the connecting bayonet (401) has a rotating shaft (402) extending axially to the left and right. The rotating hole (3003) and the rotating shaft (402) are rotatably engaged to adjust the rotation angle of the connecting plate (300). The outer shell of the spray gun body (100) is formed by locking the left and right half shells with screws, and can lock and fix the connecting plate (300). The outer shell of the spray gun body (100) and the connecting plate (300) are respectively made of outer shell plastic and plastic plate, and the hardness of the outer shell plastic is lower than that of the plastic plate.

10. A spray gun according to claim 8 or 9, characterized in that: The spray gun also includes a cap (400), which can be threadedly connected to the top of the liquid cap (2002) when the mounting sleeve (3002) is detached from the liquid cap (2002); the top of the cap (400) has a sealing end (4001), and the bottom edge of the cap (400) has a sealing edge (4002); the sealing end (4001) and the sealing edge (4002) can respectively seal the spray needle (2004). The bottle body (2001) is sealed with the air inlet (2005). A stirring bead (2006) is provided inside the bottle body (2001). The bottom end of the liquid suction tube (2003) is connected to the top end of the filter head (2007). A filter screen (2008) is provided in the middle of the bottom end of the filter head (2007). Several support points (2009) are provided on the bottom edge of the filter head (2007). There is a liquid flow interval (2010) between two adjacent support points (2009).

Images