Paint spraying equipment capable of adjusting spray shape

Abstract

The invention discloses paint spraying equipment capable of adjusting a spray shape, and relates to the technical field of spraying equipment. The positions and the number of the plugging needle heads inserted into the nozzle are electromagnetically controlled, various shapes of sprayed paint are flexibly adjusted, and the requirements of different workpieces are met. According to the design, the adaptability of the equipment is remarkably improved, the trouble of replacing various equipment is avoided, and the cost and complexity of spraying operation are reduced; the functions of fuel supply, heating, atomization spraying, power generation and self power supply are integrated, meanwhile, external power supply is not depended on, and the requirements of the outdoor environment or the environment without a power source are met; fuel and injected water are preheated by adopting the annular heat absorption sheet and the plate-shaped heat absorption sheet, and the fuel supply system is pushed to operate through pressurization of water vapor, so that efficient supply of the fuel and optimization of combustion performance are realized. By means of the design, the continuous operation capacity of the spraying equipment is improved, and meanwhile fuel waste is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of spraying equipment, in particular to a coating spraying equipment with adjustable spray shape. Background Art

[0002] In existing spraying equipment, the adjustment of spray shape usually relies on replacing nozzles of different specifications or operating through mechanical control structures. This method has significant limitations. Replacing the nozzle requires stopping the equipment, removing the existing nozzle and installing a new nozzle. This process is not only time-consuming, but may also cause the nozzle to be installed improperly due to operational errors, thus affecting the spraying quality. In addition, nozzles of different shapes need to be customized or purchased separately, which increases the types of accessories and storage costs of the equipment; traditional adjustment methods are usually fixed to several preset spray shapes, making it difficult to achieve precise spraying of complex workpieces or specific patterns. For example, when it is necessary to spray irregular shapes or fine patterns, the capacity of existing equipment is limited, and additional molds or shielding plates may be required to achieve this, further increasing production costs and process complexity. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a paint spraying device with adjustable spray shape, comprising a nozzle chamber, a paint inlet is arranged on the nozzle chamber, the paint inlet is connected to a paint tank through a pipe, positive pressure is provided to the paint tank through an air pump, and paint is sent into the nozzle chamber, wherein the air pump is powered by an electric motor; one end of the nozzle chamber is fixedly sealed with a disassembly ring, a nozzle plate is sealed and plugged in the disassembly ring, a sealing block is also plugged in the disassembly ring, the sealing block is fixed to the disassembly ring by screws, wherein the sealing block clamps the nozzle plate in the disassembly ring, wherein a plurality of nozzles are opened on the nozzle plate, and a blocking needle is inserted in each nozzle; the spray shape can be adjusted by controlling the blocking needles at different positions to be inserted into nozzles at different positions.

[0004] Preferably, the blocking needle is fixed on the permanent magnetic cylinder, the permanent magnetic cylinder is slidably arranged in the electromagnetic actuator cylinder, all the electromagnetic actuator cylinders are fixed on the electromagnetic actuator cylinder support plate, the electromagnetic actuator cylinder support plate is fixed in the nozzle cavity, and a synchronous pressure chamber is also fixed on the inner wall of the electromagnetic actuator cylinder support plate and the nozzle cavity, a synchronous permanent magnetic piston plate is provided in the synchronous pressure chamber than the sliding seal, an electromagnetic valve is provided on the synchronous permanent magnetic piston plate, and the interior of the synchronous pressure chamber is connected with the interior of all the electromagnetic actuator cylinders.

[0005] Preferably, an electromagnet is fixed to one end of the nozzle cavity away from the disassembly ring, the electromagnet cooperates magnetically with the synchronous permanent magnet piston plate, and a rectangular through hole is opened in the middle of the electromagnet, wherein the solenoid valve can move to the inner position of the rectangular through hole.

[0006] Preferably, it also includes a base, on which a fuel supply heating chamber and a combustion boost cylinder are fixedly mounted, wherein a fuel supply cylinder is fixedly mounted on the fuel supply heating chamber, the fuel supply cylinder and the fuel supply heating chamber are connected to each other, and a heating plate is fixedly mounted inside the fuel supply heating chamber and the fuel supply cylinder, wherein a plate-shaped heat absorbing plate is arranged on the inner side of the fuel supply heating chamber, and the plate-shaped heat absorbing plate is used to absorb heat.

[0007] Preferably, a pressure-regulating piston loading plate is provided on the inner wall of the fuel supply cylinder in a sliding seal, a pressure-regulating pipe is fixed on the pressure-regulating piston loading plate, a pressure-regulating valve is provided in series on the pressure-regulating pipe, wherein the pressure-regulating pipe is connected with the fuel supply cylinder and the inside of the fuel supply heating chamber; a sealing cover plate is fixedly installed on the top of the fuel supply cylinder in a manner that is easy to disassemble, an external feed pipe is fixed on the sealing cover plate, one end of the external feed pipe is fixedly connected with a hose through a fuel regulating valve, and one end of the hose is overlapped on the upper surface of the pressure-regulating piston loading plate; wherein the pressure-regulating pipe and the sealing cover plate are in sliding seal cooperation.

[0008] Preferably, a plurality of annular heat absorbing plates are fixedly mounted on the inner wall of the combustion booster cylinder, a plurality of feed preheating tubes arranged in a circular array are inserted into the annular heat absorbing plates, one end of all the feed preheating tubes extends to the outside of the combustion booster cylinder, and all the feed preheating tubes are connected by a connecting distribution tube, the connecting distribution tube is connected to an external feed pipeline, and an atomizing nozzle is provided at one end of the feed preheating tube located inside the combustion booster cylinder.

[0009] Preferably, a tail jet port is fixed at one end of the combustion booster cylinder, a turbine is rotatably arranged inside the tail jet port, an air intake cylinder is fixed at the end of the combustion booster cylinder away from the tail jet port, a motor is fixed on the inside of the air intake cylinder through a motor bracket, a transmission shaft is fixed on the output shaft of the motor, and the transmission shaft is fixedly connected to the turbine.

[0010] Preferably, a gear ring bracket and a boost impeller bracket are fixed to one end of the combustion boost cylinder close to the air intake cylinder, and a boost impeller is rotatably mounted between the gear ring bracket and the boost impeller bracket, wherein a gear ring and a center gear are rotatably mounted on the gear ring bracket, wherein the gear ring and the center gear are coaxially arranged, and the center gear and the boost impeller are fixed and rotate synchronously.

[0011] Preferably, the gear ring and the central gear are meshed and driven by three planetary gears rotatably mounted on the gear ring bracket, wherein a deflector cover is also fixed on the gear ring, and the deflector cover is fixedly sleeved on the transmission shaft.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can flexibly adjust various shapes of spray paint to meet the needs of different workpieces by electromagnetically controlling the position and number of plugging needles inserted into the nozzle. This design significantly improves the adaptability of the equipment, avoids the trouble of replacing multiple equipment, and reduces the cost and complexity of the spraying operation; (2) The present invention integrates fuel supply, heating, atomization spraying, power generation and self-power supply functions, and does not rely on external power supply, so it can adapt to the needs of outdoor or power-free environments; (3) The present invention uses annular heat absorbing plates and plate-shaped heat absorbing plates to preheat the fuel and injected water, and promotes the operation of the fuel supply system through water vapor pressurization, thereby achieving efficient fuel supply and combustion performance optimization. This design improves the continuous operation capacity of the spraying equipment and reduces fuel waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the structure of the combustion booster cylinder of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure of the air guide cover of the present invention.

[0016] Figure 4 It is a structural schematic diagram of the blocking block of the present invention.

[0017] Figure 5 It is a schematic diagram of the internal structure of the nozzle cavity of the present invention.

[0018] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle.

[0019] Figure 7 For the present invention Figure 5 Schematic diagram of the structure at point B in the middle.

[0020] In the figure: 101-nozzle cavity; 102-removal collar; 103-blocking block; 104-nozzle plate; 105-nozzle; 106-paint inlet; 107-electromagnet; 108-rectangular through hole; 109-solenoid valve; 110-synchronous pressure chamber; 111-synchronous permanent magnet piston plate; 112-electromagnetic actuator support plate; 113-blocking needle; 114-electromagnetic actuator; 115-permanent magnet cylinder; 116-motor; 117-intake cylinder; 118-motor bracket; 119-boost impeller; 120-boost impeller bracket; 121-flow guide cover; 122-gear ring bracket; 123-gear Ring; 124-planetary gear; 125-central gear; 126-drive shaft; 127-connecting distribution pipe; 128-annular heat absorbing plate; 129-feeding preheating pipe; 130-atomizing nozzle; 131-turbine; 132-tail jet nozzle; 133-combustion booster cylinder; 134-external feed pipeline; 135-fuel regulating valve; 136-hose; 137-pressure regulating valve; 138-pressure regulating pipeline; 139-pressure regulating piston loading plate; 140-heating plate; 141-plate-shaped heat absorbing plate; 142-base; 143-fuel supply cylinder; 144-sealing cover plate; 145-fuel supply heating chamber. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-7 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0022] The present invention provides a paint spraying device with adjustable spray shape, comprising a nozzle chamber 101, a paint inlet 106 is arranged on the nozzle chamber 101, the paint inlet 106 is connected to a paint tank through a pipeline, positive pressure is provided to the paint tank through an air pump, and paint is sent into the nozzle chamber 101, wherein the air pump is powered by an electric motor 116; a disassembly collar 102 is fixedly sealed at one end of the nozzle chamber 101, a nozzle plate 104 is sealed and plugged in the disassembly collar 102, a blocking block 103 is also plugged in the disassembly collar 102, the blocking block 103 is fixed to the disassembly collar 102 by screws, wherein the blocking block 103 clamps the nozzle plate 104 in the disassembly collar 102, wherein a plurality of nozzles 105 are opened on the nozzle plate 104, and a blocking needle 113 is inserted into each nozzle 105; the spray shape is adjusted by controlling the blocking needles 113 at different positions to be inserted into the nozzles 105 at different positions. The blocking needle 113 is fixed on the permanent magnetic cylinder 115, and the permanent magnetic cylinder 115 is slidably set in the electromagnetic actuator cylinder 114. All electromagnetic actuator cylinders 114 are fixed on the electromagnetic actuator cylinder support plate 112, and the electromagnetic actuator cylinder support plate 112 is fixed in the nozzle cavity 101. A synchronous pressure chamber 110 is also fixed on the inner wall of the electromagnetic actuator cylinder support plate 112 and the nozzle cavity 101. A synchronous permanent magnetic piston plate 111 is provided in the synchronous pressure chamber 110 in a sliding seal, and an electromagnetic valve 109 is provided on the synchronous permanent magnetic piston plate 111. The interior of the synchronous pressure chamber 110 is connected to the interior of all electromagnetic actuator cylinders 114. An electromagnet 107 is fixed to one end of the nozzle chamber 101 away from the disassembly ring 102. The electromagnet 107 cooperates magnetically with the synchronous permanent magnet piston plate 111, and a rectangular through hole 108 is opened in the middle of the electromagnet 107, wherein the solenoid valve 109 can move to the inner position of the rectangular through hole 108.

[0023] It also includes a base 142, on which a fuel supply heating chamber 145 and a combustion boost cylinder 133 are fixedly mounted, wherein a fuel supply cylinder 143 is fixedly mounted on the fuel supply heating chamber 145, the fuel supply cylinder 143 and the fuel supply heating chamber 145 are internally connected, and a heating plate 140 is fixedly mounted in the fuel supply heating chamber 145 and the fuel supply cylinder 143, wherein a plate-shaped heat absorbing plate 141 is arranged on the inner side of the fuel supply heating chamber 145, and the plate-shaped heat absorbing plate 141 is used to absorb heat. The inner wall of the fuel supply cylinder 143 is provided with a pressure-regulating piston loading plate 139 in a sliding seal, and a pressure-regulating pipe 138 is fixed on the pressure-regulating piston loading plate 139, and a pressure-regulating valve 137 is arranged in series on the pressure-regulating pipe 138, wherein the pressure-regulating pipe 138 is connected to the inside of the fuel supply cylinder 143 and the fuel supply heating chamber 145; a sealing cover plate 144 is fixedly installed on the top of the fuel supply cylinder 143 in a manner that is easy to disassemble, and an external feed pipe 134 is fixed on the sealing cover plate 144, and one end of the external feed pipe 134 is fixedly connected to a hose 136 through a fuel regulating valve 135, and one end of the hose 136 is overlapped on the upper surface of the pressure-regulating piston loading plate 139; wherein the pressure-regulating pipe 138 and the sealing cover plate 144 are matched with each other in a sliding seal. A plurality of annular heat absorbing plates 128 are fixedly mounted on the inner wall of the combustion booster cylinder 133, and a plurality of feed preheating tubes 129 arranged in a circular array are inserted into the annular heat absorbing plates 128. One end of all the feed preheating tubes 129 extends to the outside of the combustion booster cylinder 133, and all the feed preheating tubes 129 are connected to each other through a connecting distribution tube 127. The connecting distribution tube 127 is connected to an external feed pipeline 134, and an atomizing nozzle 130 is provided at one end of the feed preheating tube 129 located inside the combustion booster cylinder 133. A tail jet port 132 is fixed to one end of the combustion booster cylinder 133, a turbine 131 is rotatably arranged inside the tail jet port 132, an intake cylinder 117 is fixed to the end of the combustion booster cylinder 133 away from the tail jet port 132, a motor 116 is fixed to the inside of the intake cylinder 117 through a motor bracket 118, a transmission shaft 126 is fixed to the output shaft of the motor 116, and the transmission shaft 126 is fixedly connected to the turbine 131. A gear ring bracket 122 and a boost impeller bracket 120 are also fixed to the end of the combustion booster cylinder 133 close to the intake cylinder 117, a boost impeller 119 is rotatably arranged between the gear ring bracket 122 and the boost impeller bracket 120, wherein a gear ring 123 and a central gear 125 are rotatably arranged on the gear ring bracket 122, wherein the gear ring 123 and the central gear 125 are coaxially arranged, and the central gear 125 and the boost impeller 119 are fixedly rotated synchronously. The gear ring 123 and the central gear 125 are meshed and driven by three planetary gears 124 rotatably mounted on the gear ring bracket 122 , wherein a deflector 121 is also fixed on the gear ring 123 , and the deflector 121 is fixedly sleeved on the transmission shaft 126 .

[0024] The working principle of a paint spraying device with adjustable spray shape disclosed in the present invention is as follows: power is supplied to the motor 116 through an external power supply, and then the motor 116 is started, the output shaft of the motor 116 drives the transmission shaft 126 to rotate, the rotation of the transmission shaft 126 drives the turbine 131 to rotate, and at the same time the transmission shaft 126 also drives the air guide cover 121 to rotate, the air guide cover 121 drives the gear ring 123 to rotate, the gear ring 123 drives the planetary gear 124 to rotate, the planetary gear 124 drives the center gear 125 to rotate, the center gear 125 drives the boost impeller 119 to rotate, and conversely the turbine 131 also drives the boost impeller 119 to rotate through the transmission shaft 126. Then the user manually pulls up the pressure regulating pipe 138 (the pressure regulating valve 137 is in a fully open state), and then drives the pressure regulating piston loading plate 139 to move upward in the fuel supply cylinder 143 (fuel is provided between the sealing cover plate 144 and the pressure regulating piston loading plate 139, and alcohol or kerosene can be used, or a small amount of lubricating oil can be added to the fuel). At this time, the pressure regulating piston loading plate 139 squeezes the fuel into the hose 136, and then enters the connecting distribution pipe 127 along the external delivery pipe 134 (in this process, the fuel regulating valve 135 The fuel is in a fully open state), the connecting distribution pipe 127 distributes the fuel to each feed preheating pipe 129, and then sprays it into the combustion booster cylinder 133 through the atomizing nozzle 130, wherein the combustion booster cylinder 133 is provided with an electric ignition, or manually ignited with a lighter, and the sprayed fuel is ignited, and then the burning fuel forms a high temperature and high pressure environment in the combustion booster cylinder 133 (then the high temperature heats the annular heat absorbing sheet 128, and the annular heat absorbing sheet 128 heats the feed preheating pipe 129, thereby heating the fuel input to the feed preheating pipe 129). The fuel in the heat pipe 129 is preheated or gasified to make the fuel easier to burn). At this time, the motor 116 is still in the external power supply state. During this process, the supercharger impeller 119 and the turbine 131 will rotate and drive the air to flow from the supercharger impeller 119 to the turbine 131. Therefore, the high-temperature and high-pressure air in the combustion supercharger cylinder 133 will drive the turbine 131 to rotate, and then the turbine 131 will drive the supercharger impeller 119 to rotate, and the supercharger impeller 119 will drive more air into the combustion supercharger cylinder 133, so that more The air is heated, thereby further forming a high temperature and high pressure environment. When the turbine 131 can keep driving the boost impeller 119 to rotate, the external power supply to the motor 116 can be stopped. At this time, the output shaft of the motor 116 (the input shaft at this time, the shaft of the motor 116 is the output shaft when it actively rotates, and the input shaft when it passively rotates to generate electricity) will be driven by the transmission shaft 126 to rotate, so that the motor 116 generates electrical energy, and the motor 116 will drive the air pump to work, so that the paint is continuously supplied to the inside of the nozzle cavity 101.It should be noted that when the motor 116 stops external power supply, the pressure regulating valve 137 needs to be in a fully closed state. At this time, high-temperature gas will be ejected from the tail jet port 132, and the gas will heat the plate-shaped heat absorbing plate 141. The plate-shaped heat absorbing plate 141 will transfer the temperature to the fuel supply heating chamber 145, and will also transfer the temperature to the heating plate 140. Before that, water needs to be injected into the bottom of the fuel supply cylinder 143 and the fuel supply heating chamber 145 (the space below the pressure regulating piston loading plate 139). This part of the water will be heated by the heating plate 140. After heating, a high-pressure environment will be generated, thereby pushing the pressure regulating piston loading plate 139 to move upward. The pressure of this part of the high-pressure environment can be adjusted by controlling the opening and closing degree of the pressure regulating valve 137. At the same time, the fuel flow rate ejected from the atomizing nozzle 130 can also be adjusted by controlling the opening and closing degree of the fuel regulating valve 135.

[0025] The paint entering the nozzle cavity 101 will be sprayed out through the nozzle 105. Since there are multiple nozzles 105, it is only necessary to block the nozzle 105 at a specific position to adjust the shape of the paint sprayed out of the entire nozzle cavity 101. Specifically, by controlling the permanent magnetic cylinder 115 to slide in the electromagnetic actuator cylinder 114 (the inner wall of the electromagnetic actuator cylinder 114 is embedded with an electromagnetic coil winding, and the electromagnetic coil winding is energized to control the movement of the permanent magnetic cylinder 115 by magnetic force), the movement of the permanent magnetic cylinder 115 will drive the blocking needle 113 to move, and the blocking needle 113 will block the nozzle 105 after being inserted into the nozzle 105. During this process, the solenoid valve 109 is in an open state. When it is necessary to control the synchronous movement of all the blocking needles 113, that is, to control the synchronous movement of all the permanent magnet cylinders 115, it is only necessary to control the direction of the magnetic force between the electromagnet 107 and the synchronous permanent magnet piston plate 111. At this time, it is necessary to control the solenoid valve 109 to be closed, and then control the power-on direction of the electromagnet 107 to choose to repel the synchronous permanent magnet piston plate 111 or to attract the synchronous permanent magnet piston plate 111. The movement of the synchronous permanent magnet piston plate 111 will change the pressure inside the synchronous pressure chamber 110. The pressure inside the synchronous pressure chamber 110 is synchronized with the pressure inside the electromagnetic actuator 114. When the pressure increases, the blocking needle 113 is inserted into the nozzle 105, and vice versa. It is pulled out of the nozzle 105.

Claims

1. A coating spraying device with adjustable spray shape, characterized in that: The spray head chamber (101) comprises a paint inlet (106) which is arranged on the spray head chamber (101). The paint inlet (106) is connected to a paint tank via a pipeline. A positive pressure is provided to the paint tank via an air pump to deliver paint into the spray head chamber (101). The air pump is powered by an electric motor (116). One end of the nozzle cavity (101) is fixedly sealed with a disassembly collar (102), a nozzle plate (104) is sealed and plugged into the disassembly collar (102), a blocking block (103) is also plugged into the disassembly collar (102), the blocking block (103) is fixed to the disassembly collar (102) by screws, the blocking block (103) clamps the nozzle plate (104) in the disassembly collar (102), a plurality of nozzles (105) are provided on the nozzle plate (104), a blocking needle (113) is inserted into each nozzle (105), and the spray shape is adjusted by controlling the blocking needles (113) at different positions to be inserted into the nozzles (105) at different positions.

2. A coating spraying device with adjustable spray shape according to claim 1, characterized in that: The blocking needle (113) is fixed on the permanent magnetic cylinder (115), and the permanent magnetic cylinder (115) is slidably arranged in the electromagnetic actuator cylinder (114). All the electromagnetic actuator cylinders (114) are fixed on the electromagnetic actuator cylinder support plate (112), and the electromagnetic actuator cylinder support plate (112) is fixed in the nozzle chamber (101). A synchronous pressure chamber (110) is also fixed on the inner wall of the electromagnetic actuator cylinder support plate (112) and the nozzle chamber (101). A synchronous permanent magnetic piston plate (111) is provided in the synchronous pressure chamber (110) in a sliding seal, and an electromagnetic valve (109) is provided on the synchronous permanent magnetic piston plate (111). The interior of the synchronous pressure chamber (110) is connected to the interior of all the electromagnetic actuator cylinders (114).

3. A coating spraying device with adjustable spray shape according to claim 2, characterized in that: An electromagnet (107) is fixed to one end of the nozzle chamber (101) away from the disassembly collar (102), the electromagnet (107) and the synchronous permanent magnet piston plate (111) are magnetically matched, and a rectangular through hole (108) is opened in the middle of the electromagnet (107), wherein the solenoid valve (109) can move to the inner side of the rectangular through hole (108).

4. A coating spraying device with adjustable spray shape according to claim 3, characterized in that: The invention also comprises a base (142), on which a fuel supply heating chamber (145) and a combustion boost cylinder (133) are fixedly mounted, wherein a fuel supply cylinder (143) is fixedly mounted on the fuel supply heating chamber (145), the fuel supply cylinder (143) and the fuel supply heating chamber (145) are internally connected, and a heating plate (140) is fixedly mounted inside the fuel supply heating chamber (145) and the fuel supply cylinder (143), wherein a plate-shaped heat absorbing plate (141) is arranged on the inner side of the fuel supply heating chamber (145), and the plate-shaped heat absorbing plate (141) is used to absorb heat.

5. The paint spraying device with adjustable spray shape according to claim 4, characterized in that: The inner wall of the fuel supply cylinder (143) is provided with a pressure regulating piston loading plate (139) in a sliding and sealing manner, a pressure regulating pipe (138) is fixed on the pressure regulating piston loading plate (139), and a pressure regulating valve (137) is arranged in series on the pressure regulating pipe (138), wherein the pressure regulating pipe (138) is connected to the inside of the fuel supply cylinder (143) and the fuel supply heating chamber (145); a sealing cover plate (144) is fixedly installed on the top of the fuel supply cylinder (143) in a manner that is easy to disassemble, an external material delivery pipe (134) is fixed on the sealing cover plate (144), one end of the external material delivery pipe (134) is fixedly connected to a hose (136) through a fuel regulating valve (135), and one end of the hose (136) is overlapped and arranged on the upper surface of the pressure regulating piston loading plate (139); wherein the pressure regulating pipe (138) and the sealing cover plate (144) are matched in a sliding and sealing manner.

6. A coating spraying device with adjustable spray shape according to claim 5, characterized in that: A plurality of annular heat absorbing plates (128) are fixedly mounted on the inner wall of the combustion booster cylinder (133), a plurality of feed preheating tubes (129) arranged in a circular array are inserted into the annular heat absorbing plates (128), one end of all the feed preheating tubes (129) extends to the outside of the combustion booster cylinder (133), and all the feed preheating tubes (129) are connected to each other via a connecting distribution tube (127), the connecting distribution tube (127) is connected to an external feed pipeline (134), and an atomizing nozzle (130) is provided at one end of the feed preheating tube (129) located inside the combustion booster cylinder (133).

7. A coating spraying device with adjustable spray shape according to claim 6, characterized in that: A tail jet port (132) is fixed to one end of the combustion booster cylinder (133), a turbine (131) is rotatably arranged inside the tail jet port (132), an air intake cylinder (117) is fixed to one end of the combustion booster cylinder (133) away from the tail jet port (132), a motor (116) is fixedly arranged inside the air intake cylinder (117) via a motor bracket (118), a transmission shaft (126) is fixed to the output shaft of the motor (116), and the transmission shaft (126) is fixedly connected to the turbine (131).

8. The paint spraying device with adjustable spray shape according to claim 7, characterized in that: A gear ring support (122) and a boost impeller support (120) are also fixed to one end of the combustion boost cylinder (133) close to the air intake cylinder (117), and a boost impeller (119) is rotatably mounted between the gear ring support (122) and the boost impeller support (120), wherein a gear ring (123) and a center gear (125) are rotatably mounted on the gear ring support (122), wherein the gear ring (123) and the center gear (125) are coaxially arranged, and the center gear (125) and the boost impeller (119) are fixed and rotate synchronously.

9. A coating spraying device with adjustable spray shape according to claim 8, characterized in that: The gear ring (123) and the central gear (125) are meshed and driven by three planetary gears (124) rotatably mounted on the gear ring bracket (122), wherein a deflector (121) is also fixed on the gear ring (123), and the deflector (121) is fixedly sleeved on the transmission shaft (126).

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