A rotary high-pressure spray gun head and a spray gun containing the same

Abstract

The present invention belongs to the technical field of spray guns, and in particular to a rotary high-pressure spray gun head and a spray gun containing the same. The spray pipe will rotate in the internal cavity of the spray gun head along with the spray of water flow, and then the spray pipe drives the counterweight block thereon to rotate during use, resulting in frequent collisions between the counterweight block and the inner wall of the spray gun head during spraying, which is easy to cause damage to the spray pipe and the spray gun head. The following scheme is proposed, including a rotary pipe, a rotary protection module is provided on the rotary pipe, and the rotary protection module includes a mounting ring seat. A rotary high-pressure spray gun head and a spray gun containing the same disclosed in the present invention have the function of increasing the service life of the spray gun head. When in use, the device can offset the impact force generated when the spray pipe and the counterweight block rotate, thereby avoiding damage to the rotary pipe caused by the spray pipe and the counterweight block during use, thereby avoiding damage to the spray pipe, so as to increase the use effect of the device.

Description

Technical Field

[0001] The invention relates to the technical field of spray guns, in particular to a rotary high-pressure spray gun head and a spray gun containing the same. Background Art

[0002] A spray gun is a device that uses liquid or compressed air to quickly release as power. Spray guns are divided into two types: general pressure type and pressurized type. Spray guns also include pressure type spray guns, Carle type spray guns, and automatic recovery type spray guns.

[0003] The application of spray guns in the industry can be directly loaded with paint, that is, a simple spray gun can be installed in automated equipment such as automatic glue spraying machines, automatic glue coating machines, automatic paint spraying machines, coating machines and other spraying equipment.

[0004] When the existing rotary spray gun is in use, the spray pipe inside it will rotate in the internal cavity of the spray gun head as the water is sprayed, and then the spray pipe will drive the counterweight block thereon to rotate during use, resulting in frequent collisions between the counterweight block and the inner wall of the spray gun head during spraying, which can easily cause damage to the spray pipe and the spray gun head. Summary of the invention

[0005] The invention discloses a rotary high-pressure spray gun head, which aims to solve the technical problem that when the existing rotary spray gun in the background technology is in use, the spray pipe inside it will rotate in the internal cavity of the spray gun head along with the spraying of water flow, and then when in use, the spray pipe drives the counterweight block thereon to rotate, resulting in frequent collisions between the counterweight block and the inner wall of the spray gun head during spraying, which easily causes damage to the spray pipe and the spray gun head.

[0006] A rotary high-pressure spray gun head proposed by the present invention comprises a rotary pipe, a rotary protection module is arranged on the rotary pipe, and the rotary protection module comprises a mounting ring seat, the mounting ring seat is fixedly connected to the outer wall of the rotary pipe, the outer wall of the mounting ring seat is movably connected with a plurality of winding wheels, one side outer walls of the plurality of winding wheels are fixedly connected with driven gears, and the outer wall of the mounting ring seat is movably connected with a toothed ring plate, the outer wall of the rotary pipe is fixedly connected with a motor bracket, and the inner wall of the motor bracket is fixedly connected with a driving motor; the output shaft of the driving motor is connected with a driving gear through a coupling, the outer wall of the toothed ring plate on one side facing the motor bracket is fixedly connected with a gear ring member, the gear ring member is meshed with the driving gear, and the plurality of driven gears are meshed with the toothed ring plate; the inner wall of the rotary pipe is fixedly connected with a fixed ring frame, a plurality of fixing openings are opened on the fixed ring frame, and the inner walls on both sides of the plurality of fixing openings are fixedly connected with the same A fixed shaft rod, the outer walls of the multiple fixed shaft rods are movably connected with movable parts, the outer walls of one side of the multiple movable parts are fixedly connected with a buffer pad, and the inner wall of the fixed ring frame is fixedly connected with an inner buffer ring; the outer wall of the rotary pipe is fixedly connected with a mounting ring frame, and a plurality of mounting openings are opened on the mounting ring frame, and the inner walls on both sides of the plurality of mounting openings are movably connected with the same guide wheel, and the outer wall of the rotary pipe is fixedly connected with a guide ring frame, and the inner wall of the guide ring frame is fixedly connected with a plurality of guide sleeves, and a plurality of winding wheels are provided with connecting wire buckles; the plurality of connecting wire buckles are respectively located inside the plurality of guide sleeves, and the outer walls of the plurality of connecting wire buckles are respectively in contact with the inner walls of the plurality of guide wheels, and a plurality of movable parts are provided with connecting openings, and one end of the plurality of connecting wire buckles is respectively arranged inside the plurality of connecting openings, and the outer walls of one side of the multiple movable parts are fixedly connected with a return spring rod, and one end of the plurality of return spring rods is fixedly connected to the inner wall of the rotary pipe.

[0007] By providing a swirl protection module, the swirl protection module 3 can provide a reverse force to the injection pipe 5 as it rotates when in use, so as to buffer and offset the impact force generated by the injection pipe 5 driving the counterweight block 4 to rotate when in use, thereby preventing the injection pipe 5 from driving the counterweight block 4 to collide with the inner wall of the swirl pipe 2 during use, thereby preventing damage to the swirl pipe 2 due to long-term collision and friction, and at the same time preventing damage to the injection pipe 5 and the counterweight block 4 itself due to collision, thereby increasing the service life of the device during use and improving the use effect of the device.

[0008] A spray gun, according to a rotary high-pressure spray gun head as described above, also includes a spray gun body, a connecting chamber is opened inside the spray gun body, a docking pipe is arranged inside the connecting chamber, the inner wall of the rotary pipe is movably connected to the outer wall of the docking pipe, the inner wall of the docking pipe is movably connected to the injection pipe, the outer wall of the injection pipe is fixedly connected to a plurality of counterweight blocks, the plurality of counterweight blocks and the injection pipe are all located inside the rotary pipe, and a docking module is arranged on the spray gun body, a grip is arranged on the spray gun body, and a delivery pipe is fixedly connected to the bottom of the spray gun body; the docking module includes a mounting bracket, the mounting bracket is fixedly connected to the outer wall of the spray gun body, the inner walls on both sides of the mounting bracket are movably connected to the same mounting shaft rod, the outer wall of the mounting shaft rod is fixedly connected to an adjusting member, the bottom of the adjusting member is fixedly connected to a semi-ring member, and the spray gun body The outer wall of the gun body is provided with a docking port, which is connected to the connecting cavity, and the outer wall of the semi-ring part is in contact with the inner wall of the docking port; the inner wall of the semi-ring part is fixedly connected with a clamping arc plate, the clamping arc plate is located inside the connecting cavity, and the outer wall of the clamping arc plate is in contact with the outer wall of the docking pipe; the outer wall of the mounting shaft is provided with a torsion spring, the two ends of the torsion spring are respectively fixedly connected to the inner walls on both sides of the mounting bracket, the outer wall of the torsion spring is in contact with the outer wall of the adjusting part, and the inner wall of the mounting bracket is fixedly connected with an air pump; the output end of the air pump is fixedly connected with a connecting pipe, and two sealed air bags are provided inside the connecting cavity, and the outer walls of the two sealed air bags are fixedly connected with the same connecting pipe, the output end of the connecting pipe is connected with the interior of one of the sealed air bags, and the outer walls of the two sealed air bags are in contact with the inner wall of the connecting cavity and the outer wall of the docking pipe.

[0009] By providing a docking module and a docking pipe, the docking module can quickly fix the docking pipe when in use, and at the same time can ensure the sealing effect of the connection between the docking pipe and the spray gun body, so as to avoid leakage of the spray gun body when in use, further increasing the use effect of the device, and the device can also quickly disassemble the docking pipe when in use, so as to increase the operating convenience when the device is in use, and at the same time, it is convenient to disassemble and store the device through disassembly, and the swirl pipe and the injection pipe can be separated from the docking pipe as needed for replacement when in use.

[0010] From the above, it can be seen that the rotary high-pressure spray gun head provided by the present invention has the function of increasing the service life of the spray gun head. When in use, the device can offset the impact force generated by the rotation of the spray pipe and the counterweight block, thereby avoiding damage to the rotary pipe caused by the spray pipe and the counterweight block during use, thereby avoiding damage to the spray pipe and increasing the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of a rotary high-pressure spray gun head proposed by the present invention;

[0012] Figure 2 A schematic diagram of the cross-sectional structure of a rotary pipeline of a rotary high-pressure spray gun head proposed by the present invention;

[0013] Figure 3 A schematic diagram of the combined structure of a motor bracket and a mounting ring bracket of a rotary high-pressure spray gun head proposed by the present invention;

[0014] Figure 4 This is a schematic cross-sectional structure diagram of a fixed ring frame of a rotary high-pressure spray gun head proposed by the present invention;

[0015] Figure 5 This is a schematic diagram of the docking module structure of a spray gun proposed by the present invention;

[0016] Figure 6 A schematic diagram of the overall structure of a spray gun proposed by the present invention;

[0017] Figure 7 The present invention is a schematic diagram of the split structure of the butt pipe and the injection pipe of a spray gun proposed by the present invention.

[0018] In the figure: 1, docking pipe; 2, swivel pipe; 3, swivel protection module; 301, missing tooth ring plate; 302, gear ring; 303, mounting ring frame; 304, connecting wire buckle; 305, guide wheel; 306, guide sleeve; 307, guide ring frame; 308, driven gear; 309, driving gear; 310, driving motor; 311, motor bracket; 312, movable part; 313, buffer pad; 314, fixed shaft; 315, fixed ring frame; 316, inner buffer ring; 317, winding wheel; 318, mounting ring seat; 319, reset spring rod; 4, counterweight block; 5, injection pipeline; 6, docking module; 601, sealing airbag; 602, connecting pipe; 603, snap-on arc plate; 604, semi-ring; 605, torsion spring; 606, adjustment part; 607, mounting shaft rod; 608, mounting bracket; 609, air pump; 610, connecting pipe; 7, spray gun body; 8, delivery pipe; 9, handle. DETAILED DESCRIPTION

[0019] 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 the embodiments.

[0020] A rotary high-pressure spray gun head disclosed in the present invention is mainly used in scenarios where the spray pipe rotates in the internal cavity of the spray gun head as the water flow is sprayed, and then when in use, the spray pipe drives the counterweight block thereon to rotate, resulting in frequent collisions between the counterweight block and the inner wall of the spray gun head during spraying, which can easily cause damage to the spray pipe and the spray gun head.

[0021] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 A rotary high-pressure spray gun head includes a rotary pipe 2, a rotary protection module 3 is arranged on the rotary pipe 2, and the rotary protection module 3 includes a mounting ring seat 318, the mounting ring seat 318 is fixedly connected to the outer wall of the rotary pipe 2, the outer wall of the mounting ring seat 318 is connected to a plurality of winding wheels 317 through a bearing, the outer walls of one side of the plurality of winding wheels 317 are fixedly connected to a driven gear 308, and the outer wall of the mounting ring seat 318 is connected to a toothless ring plate 301 through a bearing, the outer wall of the rotary pipe 2 is fixedly connected to a motor bracket 311, and the motor bracket 3 The inner wall of the rotating pipe 2 is fixedly connected to a driving motor 310; the output shaft of the driving motor 310 is connected to a driving gear 309 through a coupling, and the outer wall of the toothless ring plate 301 facing the motor bracket 311 is fixedly connected to a gear ring 302, the gear ring 302 is meshed with the driving gear 309, and multiple driven gears 308 are all meshed with the toothless ring plate 301; the inner wall of the rotating pipe 2 is fixedly connected to a fixed ring frame 315, and multiple fixed openings are opened on the fixed ring frame 315, and the inner walls on both sides of the multiple fixed openings are fixedly connected to the same fixed shaft 3 14, the outer walls of the plurality of fixed shafts 314 are all connected to movable parts 312 through bearings, the outer walls of one side of the plurality of movable parts 312 are all fixedly connected to buffer pads 313, and the inner wall of the fixed ring frame 315 is fixedly connected to an inner buffer ring 316; the outer wall of the rotary pipe 2 is fixedly connected to the mounting ring frame 303, the mounting ring frame 303 is provided with a plurality of mounting openings, the inner walls on both sides of the plurality of mounting openings are all connected to the same guide wheel 305 through bearings, and the outer wall of the rotary pipe 2 is fixedly connected to the guide ring frame 307, the inner wall of the guide ring frame 307 is fixedly connected to the plurality of A plurality of guide sleeves 306 and a plurality of winding wheels 317 are each provided with a connecting wire buckle 304; the plurality of connecting wire buckles 304 are respectively located inside the plurality of guide sleeves 306, the outer walls of the plurality of connecting wire buckles 304 are respectively in contact with the inner walls of the plurality of guide wheels 305, and the plurality of movable parts 312 are each provided with a connecting port, one end of the plurality of connecting wire buckles 304 is respectively provided inside the plurality of connecting ports, one side outer wall of the plurality of movable parts 312 is each fixedly connected with a return spring rod 319, and one end of the plurality of return spring rods 319 is each fixedly connected to the inner wall of the rotary pipe 2.

[0022] Specifically, when in use, the drive motor 310 is started, and the drive motor 310 drives the drive gear 309 to rotate. Since the drive gear 309 is meshed with the gear ring 302, the drive motor 310 drives the gear ring 302 to rotate, and then the gear ring 302 drives the toothed ring plate 301 to rotate. At this time, since the toothed ring plate 301 is meshed with the driven gear 308, the driven gear 308 can be driven to rotate, so as to further drive the winding wheel 317 to reel in the connecting wire buckle 304, and then the movable part 312 is pulled forward by the connecting wire buckle 304. The movable part 312 drives the buffer pad 313 to rotate, so that the buffer pad 313 contacts the rotating injection pipe 5 and the counterweight block 4, and provides a reverse offset force, and compresses the reset spring rod 319 at the same time, and then the toothless ring plate 301 and the driven gear 308 are separated briefly, and the reset spring rod 319 drives the movable part 312 and the buffer pad 313 to reset, so that the device continuously buffers the injection pipe 5 and the counterweight block 4, and cooperates with the inner buffer ring 316 to protect the rotating pipe 2, the injection pipe 5 and the counterweight block 4 until the use is completed;

[0023] In a specific application scenario, the swivel protection module 3 is suitable for the use of the spray gun, that is, the swivel protection module 3 can provide a reverse force to the spray pipe 5 as it rotates when in use, so as to buffer and offset the impact force generated by the rotation of the counterweight block 4 driven by the spray pipe 5 when in use, thereby preventing the spray pipe 5 from driving the counterweight block 4 to collide with the inner wall of the swivel pipe 2 during use, thereby preventing damage to the swivel pipe 2 due to long-term collision and friction, and at the same time preventing damage to the spray pipe 5 and the counterweight block 4 itself due to collision, thereby increasing the service life of the device during use and improving the use effect of the device.

[0024] Reference Figure 5-Figure 7, a spray gun, according to a rotary high-pressure spray gun head as described above, also includes a spray gun body 7, a connecting chamber is opened inside the spray gun body 7, a docking pipe 1 is arranged inside the connecting chamber, the inner wall of the rotary pipe 2 is connected to the outer wall of the docking pipe 1 by threads, the inner wall of the docking pipe 1 is connected to the injection pipe 5 by threads, the outer wall of the injection pipe 5 is fixedly connected to a plurality of counterweight blocks 4, the plurality of counterweight blocks 4 and the injection pipe 5 are all located inside the rotary pipe 2, and a docking module 6 is arranged on the spray gun body 7, a grip piece 9 is arranged on the spray gun body 7, and a delivery pipe 8 is fixedly connected to the bottom of the spray gun body 7; the docking module 6 includes a mounting bracket 608, the mounting bracket 608 is fixedly connected to the outer wall of the spray gun body 7, the inner walls on both sides of the mounting bracket 608 are connected to the same mounting shaft rod 607 through bearings, the outer wall of the mounting shaft rod 607 is fixedly connected to an adjusting member 606, the bottom of the adjusting member 606 is fixedly connected to a semi-ring member 604, and the outer wall of the spray gun body 7 A docking port is provided, which is connected to the connecting cavity, and the outer wall of the semi-ring member 604 contacts the inner wall of the docking port; the inner wall of the semi-ring member 604 is fixedly connected with a clamping arc plate 603, which is located inside the connecting cavity, and the outer wall of the clamping arc plate 603 contacts the outer wall of the docking pipe 1; the outer wall of the mounting shaft 607 is provided with a torsion spring 605, and the two ends of the torsion spring 605 are respectively fixedly connected to the inner walls of the two sides of the mounting bracket 608, and the outer wall of the torsion spring 605 is connected to the adjusting member 608. 06, and the inner wall of the mounting bracket 608 is fixedly connected to an air pump 609; the output end of the air pump 609 is fixedly connected to a connecting pipe 610, and two sealed air bags 601 are arranged inside the connecting cavity, and the outer walls of the two sealed air bags 601 are fixedly connected to the same connecting pipe 602, the output end of the connecting pipe 610 is connected to the interior of one of the sealed air bags 601, and the outer walls of the two sealed air bags 601 are in contact with the inner wall of the connecting cavity and the outer wall of the docking pipe 1.

[0025] Specifically, when in use, the docking pipe 1 is inserted into the connecting cavity on the spray gun body 7, and the adjusting member 606 is loosened at this time, and the adjusting member 606 is driven to reset by the torsion spring 605, so that the adjusting member 606 drives the installation shaft 607 to rotate, and then the semi-ring member 604 is driven to rotate by the adjusting member 606 until the semi-ring member 604 contacts the inner wall of the docking interface, and the semi-ring member 604 drives the clamping arc plate 603 to clamp and contact the outer wall of the docking pipe 1 to perform preliminary fixation, and at the same time, the air pump 609 is started, and the air pump 609 conveys air to the inside of the connecting pipe 610, and conveys the gas to the inside of one of the sealing airbags 601 through the connecting pipe 610, and then the two sealing airbags 601 are inflated at the same time through the connecting pipe 602, until the outer wall of the sealing airbag 601 contacts the outer wall of the docking pipe 1 and the inner wall of the connecting cavity, completing the secondary fixing and sealing operation, and then the swirl pipe 2 and the injection pipe 5 are respectively connected to the docking pipe 1 to complete the assembly of the spray gun;

[0026] In a specific application scenario, the docking module 6 is suitable for the docking and disassembly of the spray gun head components, that is, the docking module 6 can quickly fix the docking pipe 1 when in use, and at the same time can ensure the sealing effect of the connection between the docking pipe 1 and the spray gun body 7, so as to avoid leakage of the spray gun body 7 when in use, further increasing the use effect of the device, and the device can also quickly disassemble the docking pipe 1 when in use, so as to increase the convenience of operation when the device is in use, and at the same time, it is convenient to disassemble and store the device through disassembly, and the swirl pipe 2 and the injection pipe 5 can be separated from the docking pipe 1 as needed for replacement when in use.

[0027] Working principle: When in use, insert the docking pipe 1 into the connecting cavity on the spray gun body 7, then loosen the adjusting member 606, and drive the adjusting member 606 to reset through the torsion spring 605, so that the adjusting member 606 drives the installation shaft 607 to rotate, and then drives the semi-ring member 604 to rotate through the adjusting member 606, until the semi-ring member 604 contacts the inner wall of the docking interface, and then the semi-ring member 604 drives the clamping arc plate 603 to clamp and contact the outer wall of the docking pipe 1 for preliminary fixation, and at the same time start the air pump 609, the air pump 609 conveys air to the inside of the connecting pipe 610, and conveys the gas to one of the sealing airbags 601 through the connecting pipe 610, and then the two sealing airbags 601 are inflated at the same time through the connecting pipe 602, until the outer wall of the sealing airbag 601 contacts the outer wall of the docking pipe 1 and the inner wall of the connecting cavity, completing the secondary fixing and sealing operation, and then the swirl pipe 2 and the injection pipe 5 are respectively connected to the docking pipe 1 to complete the assembly of the spray gun;

[0028] When in use, the drive motor 310 is started, and the drive motor 310 drives the drive gear 309 to rotate. Since the drive gear 309 is meshed with the gear ring 302, the drive motor 310 drives the gear ring 302 to rotate, and then the gear ring 302 drives the toothed ring plate 301 to rotate. At this time, since the toothed ring plate 301 is meshed with the driven gear 308, it can drive the driven gear 308 to rotate, so as to further drive the winding wheel 317 to wind up the connecting wire buckle 304, and then the movable part 312 is pulled to rotate through the connecting wire buckle 304. At this time, the movable part 312 drives the buffer pad 313 to rotate, so that the buffer pad 313 contacts the rotating injection pipe 5 and the counterweight block 4, and provides a reverse offset force, and compresses the reset spring rod 319 at the same time. Then the toothless ring plate 301 and the driven gear 308 are briefly separated. At this time, the reset spring rod 319 drives the movable part 312 and the buffer pad 313 to reset, so that the device can continuously buffer the injection pipe 5 and the counterweight block 4, so as to cooperate with the inner buffer ring 316 to protect the rotating pipe 2, the injection pipe 5 and the counterweight block 4 until use is completed.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary high-pressure spray gun head, comprising a rotary pipe (2), characterized in that: The swirling pipe (2) is provided with a swirling protection module (3), and the swirling protection module (3) comprises a mounting ring seat (318), the mounting ring seat (318) is fixedly connected to the outer wall of the swirling pipe (2), the outer wall of the mounting ring seat (318) is movably connected to a plurality of winding wheels (317), one side outer wall of the plurality of winding wheels (317) is fixedly connected to a driven gear (308), and the outer wall of the mounting ring seat (318) is movably connected to a toothless ring plate (301), the outer wall of the swirling pipe (2) is fixedly connected to a motor bracket (311), and the inner wall of the motor bracket (311) is fixedly connected to a driving motor (310); The output shaft of the driving motor (310) is connected to a driving gear (309) via a coupling, a gear ring (302) is fixedly connected to an outer wall of the toothless ring plate (301) facing the motor bracket (311), the gear ring (302) is meshed with the driving gear (309), and a plurality of driven gears (308) are meshed with the toothless ring plate (301); The inner wall of the swirling pipe (2) is fixedly connected to a fixed ring frame (315), a plurality of fixed openings are formed on the fixed ring frame (315), the inner walls on both sides of the plurality of fixed openings are fixedly connected to the same fixed shaft rod (314), the outer walls of the plurality of fixed shaft rods (314) are movably connected to movable parts (312), the outer walls of one side of the plurality of movable parts (312) are fixedly connected to a buffer pad (313), and the inner wall of the fixed ring frame (315) is fixedly connected to an inner buffer ring (316); The outer wall of the rotary pipe (2) is fixedly connected to a mounting ring frame (303), a plurality of mounting openings are provided on the mounting ring frame (303), the inner walls on both sides of the plurality of mounting openings are movably connected to the same guide wheel (305), the outer wall of the rotary pipe (2) is fixedly connected to a guide ring frame (307), the inner wall of the guide ring frame (307) is fixedly connected to a plurality of guide sleeves (306), and a plurality of winding wheels (317) are provided with connecting wire buckles (304); The plurality of connecting wire buckles (304) are respectively located inside the plurality of guide sleeves (306); the outer walls of the plurality of connecting wire buckles (304) are respectively in contact with the inner walls of the plurality of guide wheels (305); the plurality of movable parts (312) are each provided with a connecting port; one end of the plurality of connecting wire buckles (304) is respectively disposed inside the plurality of connecting ports; one side outer wall of the plurality of movable parts (312) is fixedly connected to a return spring rod (319); one end of the plurality of return spring rods (319) is fixedly connected to the inner wall of the rotary pipe (2).

2. A spray gun, comprising a rotary high-pressure spray gun head according to claim 1, characterized in that: The invention also comprises a spray gun body (7), wherein a connection cavity is provided inside the spray gun body (7), a docking pipe (1) is arranged inside the connection cavity, an inner wall of the rotary pipe (2) is movably connected to an outer wall of the docking pipe (1), an injection pipe (5) is movably connected to the inner wall of the docking pipe (1), a plurality of counterweight blocks (4) are fixedly connected to the outer wall of the injection pipe (5), the plurality of counterweight blocks (4) and the injection pipe (5) are all located inside the rotary pipe (2), a docking module (6) is arranged on the spray gun body (7), a gripping member (9) is arranged on the spray gun body (7), and a delivery pipe (8) is fixedly connected to the bottom of the spray gun body (7).

3. A spray gun according to claim 2, characterized in that: The docking module (6) comprises a mounting bracket (608), the mounting bracket (608) being fixedly connected to the outer wall of the spray gun body (7), the inner walls on both sides of the mounting bracket (608) being movably connected to the same mounting shaft rod (607), the outer wall of the mounting shaft rod (607) being fixedly connected to an adjusting member (606), the bottom of the adjusting member (606) being fixedly connected to a semi-ring member (604), and the outer wall of the spray gun body (7) being provided with a docking port, the docking port being connected to the connecting cavity, and the outer wall of the semi-ring member (604) being in contact with the inner wall of the docking port.

4. A spray gun according to claim 3, characterized in that: The inner wall of the semi-ring member (604) is fixedly connected with a clamping arc plate (603), the clamping arc plate (603) is located inside the connection cavity, and the outer wall of the clamping arc plate (603) is in contact with the outer wall of the docking pipe (1).

5. A spray gun according to claim 4, characterized in that: The outer wall of the mounting shaft (607) is provided with a torsion spring (605), and the two ends of the torsion spring (605) are respectively fixedly connected to the inner walls of the mounting bracket (608) on both sides. The outer wall of the torsion spring (605) contacts the outer wall of the adjustment member (606), and the inner wall of the mounting bracket (608) is fixedly connected to an air pump (609).

6. A spray gun according to claim 5, characterized in that: The output end of the air pump (609) is fixedly connected to a connecting tube (610), two sealed airbags (601) are arranged inside the connecting cavity, the outer walls of the two sealed airbags (601) are fixedly connected to the same connecting tube (602), the output end of the connecting tube (610) is connected to the interior of one of the sealed airbags (601), and the outer walls of the two sealed airbags (601) are in contact with the inner wall of the connecting cavity and the outer wall of the docking pipe (1).

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