Air energy heat pump shell paint spraying device

Abstract

The invention relates to the field of heat pump accessory machining, in particular to an air energy heat pump shell paint spraying device which comprises a high-pressure spraying machine, a plurality of airflow channels connected with an external air pump are arranged in an inner cavity of the high-pressure spraying machine, an inserting opening is formed in the center of the top of the high-pressure spraying machine, and a discharging pipe is inserted into an inner cavity of the inserting opening. A plurality of discharging channels communicating with the discharging pipe are formed in an inner cavity of the high-pressure spraying machine, and one end of each discharging channel communicates with a hose. A stirring mechanism is arranged at the top of the high-pressure spraying machine; high-pressure air is conveyed to the airflow channel through the external air pump, the annular airflow channel and the air curtain are formed around the spray head through the airflow channel, the ventilation pipe and the air channels distributed in the annular array, paint flow is accurately guided through the air curtain, paint particles are prevented from being diffused, and the paint spraying effect is improved. The problems that in the prior art, paint waste is serious, workshop pollution is large, the spraying quality is poor, and the equipment maintenance cost is high are solved.

Description

Technical Field

[0001] The invention relates to the field of heat pump accessory processing, and in particular to an air energy heat pump shell painting device. Background Art

[0002] A paint sprayer with application number CN202110365635.1 includes a top-level air inlet duct arranged at the top of the paint sprayer, a bottom-level exhaust duct arranged at the bottom of the paint sprayer, and a paint spraying space arranged between the top-level air inlet duct and the bottom-level exhaust duct; the paint sprayer disclosed in the invention is beneficial to improving the stability of the airflow in the paint spraying space, and is beneficial to reducing the interference of the air pressure in the paint spraying space on the paint aerosol, thereby helping to improve the controllability of the paint aerosol, and further helping to improve the efficiency of the paint spraying operation.

[0003] In the prior art including the above-mentioned patent, after the paint is atomized and sprayed out from the nozzle, it is easily disturbed by factors such as natural airflow, temperature changes and workpiece shape in the workshop. The natural airflow in the workshop is turbulent and irregular, which will cause the atomized paint particles to float randomly, resulting in a large amount of paint unable to accurately adhere to the surface of the air energy heat pump shell, which not only causes up to 30%-40% waste of paint raw materials, but also affects the spraying effect.

[0004] Therefore, it is necessary to invent an air energy heat pump housing painting device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an air energy heat pump shell painting device, which delivers high-pressure gas to the air flow channel through an external air pump, and forms an annular air flow channel and air curtain around the nozzle through the air flow channel, ventilation pipe and air passages distributed in a circular array. The air curtain is used to accurately guide the paint flow and block the diffusion of paint particles, so as to solve the multiple problems in the prior art such as serious paint waste, large workshop pollution, poor spraying quality and high equipment maintenance cost.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an air energy heat pump housing painting device, comprising a high-pressure sprayer, the inner cavity of the high-pressure sprayer is provided with a plurality of air flow channels connected to an external air pump, a plug port is provided at the top center of the high-pressure sprayer, a feed pipe is plugged into the inner cavity of the plug port, the inner cavity of the high-pressure sprayer is provided with a plurality of feed channels connected to the feed pipe, and one end of each of the plurality of feed channels is connected with a hose; A stirring mechanism is provided on the top of the high-pressure spraying machine, an input end of the stirring mechanism is connected to a feed pipe, and an output end of the stirring mechanism is connected to the high-pressure spraying machine; A plurality of adjusting mechanisms are provided on the outer side wall of the high-pressure spraying machine. The other ends of the plurality of adjusting mechanisms are all provided with steering mechanisms. The bottom of the steering mechanism is rotatably connected with a spraying mechanism, and the input end of the spraying mechanism is communicated with a hose; The spraying mechanism includes an air collecting hood. The air collecting hood is arranged at the bottom of the steering mechanism. A paint spray head is arranged at the output end of the air collecting hood. A plurality of spray holes and air channels are further arranged in the inner cavity of the output end of the air collecting hood. A plurality of flow guiding plates are hinged in the air channel. Both ends of the flow guiding plate are hinged in the inner cavity of the air channel. One end of the flow guiding plate is hinged with a telescopic rod. One end of the telescopic rod is connected in the air channel. A plurality of air pressure spray heads are arranged in the air channel and are matched with the positions of the flow guiding plates.

[0007] As a preferred solution of the present invention, a rectangular groove is arranged in the inner cavity of the high-pressure spraying machine. One ends of the plurality of air flow channels are all communicated with the inner cavity of the rectangular groove. A connection port is arranged at the top end of the rectangular groove. The other ends of the air flow channels are communicated with a ventilation pipe. The other end of the ventilation pipe is communicated with the air pressure spray head.

[0008] As a preferred solution of the present invention, the stirring mechanism includes a mixing barrel. The mixing barrel is located at the top of the high-pressure spraying machine. One end of the feeding pipe is communicated and inserted at the central position of the bottom of the mixing barrel. The other end of the feeding pipe is inserted into the inner cavity of the high-pressure spraying machine. A barrel cover is installed at the top of the mixing barrel. A stirring motor is arranged at the top of the barrel cover. The power output shaft of the stirring motor is rotatably connected at the central position of the top of the barrel cover. One end of the power output shaft of the stirring motor is provided with a stirring rod. The stirring rod is located in the inner cavity of the mixing barrel.

[0009] As a preferred solution of the present invention, the adjusting mechanism includes a support plate. One end of the support plate is arranged on the side wall of the high-pressure spraying machine. A vertical plate is arranged at the top of the support plate. One side of the vertical plate is connected with a telescopic adjusting rod. The other end of the telescopic adjusting rod is installed on the side wall of the high-pressure spraying machine. Two limiting rods are slidably connected to the side wall of the vertical plate. The limiting rods are arranged on the support plate. The bottom end of the support plate is arranged on the steering mechanism.

[0010] As a preferred solution of the present invention, the steering mechanism includes a protective cover. A servo motor is installed on the side wall of the protective cover. A gear is arranged on the power output shaft of the servo motor. An adjusting disc is meshed with one side of the gear. A rotating rod is arranged at the center of the adjusting disc. The rotating rod penetrates through the center of the adjusting disc, and one end of the rotating rod is connected with the spraying mechanism. The other end of the rotating rod is rotatably connected to the central position of the bottom of the protective cover. A conical tooth ring meshed with the gear is arranged at the top of the adjusting disc; Two limiting grooves are arranged at the top of the adjusting disc.

[0011] As a preferred solution of the present invention, the spraying mechanism also includes a positioning rod, and two positioning rods are provided. Both of the two positioning rods penetrate the inner cavity of the adjacent limiting grooves, and the bottom ends of the two positioning rods are connected to a fixing plate, one side of the fixing plate is connected to the air collecting hood, and the top center of the fixing plate is connected to the bottom end of the rotating rod.

[0012] As a preferred solution of the present invention, the diameter of the output port of the gas collecting hood is smaller than the diameter of the input port, and the cross section of the gas collecting hood is arranged in a trapezoidal shape.

[0013] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows: 1. High-pressure gas is continuously delivered to the air flow channel through an external air pump. The gas is evenly distributed to multiple ventilation pipes surrounding the air collecting hood through the air flow channel. The ventilation pipes are connected to the preset air ducts in the side wall of the air collecting hood, and the air duct outlets are distributed in a circular array with the spray hole as the center. When the high-pressure gas is ejected from the air duct at high speed, the airflows generated by adjacent air outlets are superimposed on each other to form a complete annular air flow channel around the nozzle. The annular high-speed flowing gas forms a uniform air curtain outside the nozzle, wrapping the sprayed paint in the middle to form a relatively closed painting area. The air curtain can effectively prevent paint particles from diffusing to the surrounding environment, and at the same time can also play a role in guiding the direction of the paint flow, so that the paint can be more accurately attached to the surface of the air energy heat pump shell, thereby improving the spraying effect and uniformity.

[0014] 2. The paint flow is guided by the air curtain. When the paint is sprayed out from the nozzle in atomized form, the annular airflow field formed by the air curtain will synergize with the paint mist particles. The airflow direction of the air curtain forms a specific angle with the spray direction of the paint mist, which reduces the consumption of raw materials caused by cleaning the extra attached paint, further saves the cost of raw materials, blocks most of the paint particles through the air curtain, reduces the adhesion and deposition of paint in the spraying equipment, workshop walls, ground and other areas, reduces the frequency of equipment cleaning and the difficulty of maintenance, prolongs the service life of key components such as spray guns and pipelines, and reduces the cost of equipment maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the regulating mechanism of the present invention; Figure 3Schematic diagram of the steering mechanism and spraying mechanism of the present invention; Figure 4 Schematic diagram of the conical gear ring and gear of the present invention; Figure 5 Schematic diagram of the spraying mechanism of the present invention; Figure 6 Schematic diagram of the positioning rod and rotating rod of the present invention; Figure 7 Schematic diagram of the distribution structure of the air flow channel and the material feeding channel of the present invention; Figure 8 Schematic diagram of the internal sectional view of the spraying mechanism of the present invention; Figure 9 Schematic diagram of the plane sectional view of the mixing barrel of the present invention.

[0017] Explanation of reference numerals: 1. High-pressure spraying machine; 101. Air flow channel; 102. Connection port; 103. Vent pipe; 11. Material feeding pipe; 12. Material feeding channel; 13. Hose; 2. Stirring mechanism; 20. Feed pipe; 21. Mixing barrel; 22. Barrel cover; 23. Stirring motor; 24. Stirring rod; 3. Adjusting mechanism; 31. Support plate; 32. Vertical plate; 33. Telescopic adjusting rod; 34. Limit rod; 4. Steering mechanism; 41. Protective cover; 42. Servo motor; 43. Adjusting disc; 44. Rotating rod; 45. Conical gear ring; 5. Spraying mechanism; 501. Positioning rod; 502. Fixed plate; 51. Air collecting hood; 52. Paint spray head; 53. Deflector; 54. Telescopic rod; 55. Air pressure spray head. Detailed implementation manners

[0018] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] The present invention provides an air source heat pump housing painting device as shown in Figures 1-9 , which includes a high-pressure spraying machine 1. A plurality of air flow channels 101 connected to an external air pump are provided in the inner cavity of the high-pressure spraying machine 1. An insertion port is provided at the center of the top of the high-pressure spraying machine 1, and a material feeding pipe 11 is inserted into the inner cavity of the insertion port. A plurality of material feeding channels 12 communicating with the material feeding pipe 11 are opened in the inner cavity of the high-pressure spraying machine 1, and one ends of the plurality of material feeding channels 12 are respectively communicated with a hose 13; By providing the air flow channel 101 connected to the external air pump, a gas source is provided for subsequent air-assisted spraying; the communication design of the material feeding pipe 11, the material feeding channel 12 and the hose 13 forms a paint conveying path, ensuring that the paint can be stably conveyed to the spraying mechanism and ensuring the continuity of the spraying operation.

[0020] A stirring mechanism 2 is provided at the top of the high-pressure spraying machine 1. The input end of the stirring mechanism 2 is connected with a feed pipe 20, and the output end of the stirring mechanism 2 is connected with the high-pressure spraying machine 1; The connection settings of the stirring mechanism 2 with the feed pipe 20 and the high-pressure spraying machine 1 can pre-stir the paint entering the device, avoid precipitation and stratification of the paint before spraying, ensure uniform mixing of the paint, and thus improve the quality and uniformity of the painted surface after spraying.

[0021] A plurality of adjusting mechanisms 3 are provided on the outer side wall of the high-pressure spraying machine 1. The other ends of the plurality of adjusting mechanisms 3 are all equipped with steering mechanisms 4. The bottom of the steering mechanism 4 is rotatably connected with a spraying mechanism 5. The input end of the spraying mechanism 5 is connected with a hose 13; The combined connection of the adjusting mechanism 3, the steering mechanism 4 and the spraying mechanism 5 enables the spraying mechanism to adjust its position and angle in multiple dimensions, can flexibly adapt to air source heat pump shells of different shapes and sizes, and improves the versatility of the device and the spraying coverage.

[0022] The spraying mechanism 5 includes an air collecting hood 51. The air collecting hood 51 is provided at the bottom of the steering mechanism 4. The output end of the air collecting hood 51 is provided with a paint spray head 52. The inner cavity of the output end of the air collecting hood 51 is also provided with a plurality of spray holes and air ducts. A plurality of flow guiding plates 53 are hinged in the air ducts. Both ends of the flow guiding plate 53 are hinged in the inner cavity of the air duct. One end of the flow guiding plate 53 is hinged with a telescopic rod 54. One end of the telescopic rod 54 is connected in the air duct. A plurality of air pressure spray heads 55 matching the positions of the flow guiding plates 53 are provided in the air duct.

[0023] The air collecting hood 51 integrates the paint spray head, spray holes and air ducts to realize the integration of paint atomization and air flow assistance; the cooperation of the flow guiding plate 53, the telescopic rod 54 and the air pressure spray head 55 can change the air flow direction by adjusting the angle of the flow guiding plate, accurately direct the atomized paint particles to the surface of the shell, reduce paint scattering, and improve the spraying efficiency and environmental protection.

[0024] Furthermore, a rectangular groove is provided in the inner cavity of the high-pressure spraying machine 1. One ends of a plurality of air flow channels 101 are all communicated with the inner cavity of the rectangular groove. A connection port 102 is provided at the top end of the rectangular groove. The other ends of the air flow channels 101 are communicated with a ventilation pipe 103. The other end of the ventilation pipe 103 is communicated with the air pressure spray head 55.

[0025] The setting of the rectangular groove and the connection port 102 facilitates the quick connection of an external air pump and gas shunting; the ventilation pipe 103 stably transports the air flow to the air pressure spray head 55, ensures uniform air supply to each spray head, and ensures the gathering and guiding effect of the air flow on the paint atomization particles.

[0026] Furthermore, the stirring mechanism 2 includes a mixing barrel 21 which is located at the top of the high-pressure spraying machine 1. One end of the feeding pipe 11 is connected and inserted into the center position at the bottom of the mixing barrel 21, and the other end of the feeding pipe 11 is inserted into the inner cavity of the high-pressure spraying machine 1. A barrel cover 22 is installed on the top of the mixing barrel 21, and a stirring motor 23 is provided on the top of the barrel cover 22. The power output shaft of the stirring motor 23 is rotatably connected to the center of the top of the barrel cover 22. One end of the power output shaft of the stirring motor 23 is provided with a stirring rod 24 which is located in the inner cavity of the mixing barrel 21.

[0027] The mixing barrel 21, the stirring motor 23 and the stirring rod 24 constitute a complete stirring system. The stirring rod is driven by the motor to rotate, so as to fully stir the paint in the barrel. The design of the barrel cover is convenient for feeding and cleaning. The connection between the feeding pipe and the high-pressure spraying machine ensures that the stirred paint can smoothly enter the spraying process, improving the mixing efficiency and quality of the paint.

[0028] Furthermore, the adjusting mechanism 3 includes a support plate 31. One end of the support plate 31 is arranged on the side wall of the high-pressure spraying machine 1. A vertical plate 32 is provided on the top of the support plate 31. One side of the vertical plate 32 is connected with a telescopic adjusting rod 33. The other end of the telescopic adjusting rod 33 is installed on the side wall of the high-pressure spraying machine 1. Two limiting rods 34 are slidably connected to the side wall of the vertical plate 32. The limiting rods 34 are arranged on the support plate 31. The bottom end of the support plate 31 is arranged on the steering mechanism 4.

[0029] The telescopic adjusting rod 33 can adjust the position of the vertical plate 32. Combined with the sliding limit of the limiting rods 34, the height of the spraying mechanism in the vertical direction can be adjusted. The connection between the support plate 31 and the steering mechanism 4 provides a stable support for the spraying mechanism, ensuring the stable position during the spraying process and avoiding affecting the spraying accuracy due to shaking.

[0030] Furthermore, the steering mechanism 4 includes a protective cover 41. A servo motor 42 is installed on the side wall of the protective cover 41. A gear is provided on the power output shaft of the servo motor 42. A regulating disc 43 is meshed with one side of the gear. A rotating rod 44 is provided at the center of the regulating disc 43. The rotating rod 44 penetrates through the center of the regulating disc 43, and one end of the rotating rod 44 is connected with the spraying mechanism 5. The other end of the rotating rod 44 is rotatably connected to the center of the bottom of the protective cover 41. A conical tooth ring 45 meshed with the gear is provided on the top of the regulating disc 43; Two limiting grooves are provided on the top of the regulating disc 43.

[0031] The servo motor 42 drives the regulating disc 43 to rotate through the meshing transmission between the gear and the conical tooth ring 45, and then realizes the horizontal steering of the spraying mechanism through the rotating rod 44. The limiting grooves cooperate with the positioning rod 501 to limit the rotation range of the regulating disc, ensuring the stable and controllable steering process and meeting the requirements of different spraying angles.

[0032] Further, the spraying mechanism 5 further includes positioning rods 501. There are two positioning rods 501, and both of the two positioning rods 501 penetrate through the inner cavity of the adjacent limiting slots. The bottom ends of the two positioning rods 501 are connected with a fixing plate 502. One side of the fixing plate 502 is connected to the air collecting hood 51 in a penetrating manner, and the center of the top of the fixing plate 502 is connected to the bottom end of the rotating rod 44.

[0033] The cooperation between the positioning rods 501 and the limiting slots enhances the stability of the spraying mechanism during the turning process and prevents the air collecting hood 51 from shifting during rotation; the fixing plate 502 firmly connects the positioning rods, the rotating rod and the air collecting hood, ensuring the coordinated operation of each component and improving the overall reliability of the spraying mechanism.

[0034] Further, the output port diameter of the air collecting hood 51 is smaller than the input port diameter, and the cross-section of the air collecting hood 51 is trapezoid-shaped.

[0035] The trapezoidal air collecting hood 51 can converge the incoming paint and air flow, improving the atomization concentration of the paint and the air flow pressure; the reduction of the output port size helps to enhance the impact force and atomization effect of the paint spraying, and at the same time, in cooperation with the air flow channel, makes the paint particles more accurately sprayed onto the surface of the shell, improving the spraying efficiency and the paint surface quality.

[0036] Working principle: First, the paint is first input into the inner cavity of the mixing barrel 21 through the feed pipe 20. At this time, the stirring motor 23 is started, and the stirring rod 24 is driven to rotate by the power output shaft of the stirring motor 23 to stir and mix the input paint, avoiding the accumulation and sinking of the paint in the inner cavity of the mixing barrel 21, which affects the uniformity of spraying; Second, the high-pressure spraying machine 1 is started. The mixed paint is pressurized by the high-pressure spraying machine 1 and conveyed to the air collecting hood 51 through the feeding channel 12 and the hose 13. The paint is atomized and sprayed out through the spray holes at the output end of the air collecting hood 51. During this process, an external air pump connected to the high-pressure spraying machine 1 is started, and the air flow channel 101 inner cavity is supplied with air through the external air pump. The gas enters the ventilation pipe 103 and the air duct through the air flow channel 101 and is blown out through the output end of the air duct; Since multiple air ducts are arranged in an annular array centered on the center of the spray hole, when the gas is blown out, it can gather the paint atomization particles scattered around when the paint is atomized and sprayed out towards the center of the spray hole, improving the gathering of the spraying points during painting, avoiding the waste of paint during the painting process and the scattered atomized paint adhering to the surrounding objects and the environment due to the too large scattered area of the atomized particles during spraying, resulting in environmental pollution and seriously affecting the air quality of the processing environment; Thirdly, by simultaneously activating multiple telescopic rods 54, the swinging angle of the deflector 53 is adjusted through the telescopic movement of the telescopic rods 54. Through the swinging of the deflector 53, the direction of the gas ejected by the pneumatic nozzle 55 can be adjusted, so that the gas can flow in a circular surrounding state when ejected. When the circular airflow flows, it can drive the scattered atomized paint particles to form a circulating flow and blow towards the surface of the air source heat pump housing. By adjusting the ejection angle of the pneumatic nozzle 55, the ejection angle of the circular gas can be adjusted, thereby realizing the adjustment of the circulating speed of the circulating gas and the blowing amount of the gas.

[0037] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An air - source heat pump housing painting device, characterized in that: Including a high-pressure spraying machine (1), the inner cavity of the high-pressure spraying machine (1) is provided with a plurality of air flow channels (101) connected to an external air pump. The center of the top of the high-pressure spraying machine (1) is provided with an insertion port, and a blanking pipe (11) is inserted into the inner cavity of the insertion port. The inner cavity of the high-pressure spraying machine (1) is provided with a plurality of blanking channels (12) communicating with the blanking pipe (11), and one ends of the plurality of blanking channels (12) are respectively communicated with a hose (13). The top of the high-pressure spraying machine (1) is provided with a stirring mechanism (2). The input end of the stirring mechanism (2) is communicated with a feed pipe (20), and the output end of the stirring mechanism (2) is communicated with the high-pressure spraying machine (1). A plurality of adjusting mechanisms (3) are provided on the outer side wall of the high-pressure spraying machine (1). The other ends of the plurality of adjusting mechanisms (3) are all installed with a steering mechanism (4). The bottom of the steering mechanism (4) is rotatably connected with a spraying mechanism (5), and the input end of the spraying mechanism (5) is communicated with the hose (13). The spraying mechanism (5) includes an air collecting hood (51). The air collecting hood (51) is arranged at the bottom of the steering mechanism (4). The output end of the air collecting hood (51) is provided with a paint spray head (52). The inner cavity of the output end of the air collecting hood (51) is also provided with a plurality of spray holes and air channels. A plurality of flow guiding plates (53) are hinged in the air channels. Both ends of the flow guiding plate (53) are hinged in the inner cavity of the air channel. One end of the flow guiding plate (53) is hinged with a telescopic rod (54), and one end of the telescopic rod (54) is connected in the air channel. A plurality of air pressure spray heads (55) matching the positions of the flow guiding plates (53) are arranged in the air channel.

2. The air energy heat pump housing painting device according to claim 1, characterized in that: The inner cavity of the high-pressure spraying machine (1) is provided with a rectangular groove. One ends of the plurality of air flow channels (101) are all communicated with the inner cavity of the rectangular groove. The top end of the rectangular groove is provided with a connection port (102). The other end of the air flow channel (101) is communicated with a ventilation pipe (103), and the other end of the ventilation pipe (103) is communicated with the air pressure spray head (55).

3. The air energy heat pump housing painting device according to claim 1, wherein: The stirring mechanism (2) includes a mixing barrel (21). The mixing barrel (21) is located at the top of the high-pressure spraying machine (1). One end of the blanking pipe (11) is inserted and communicated at the center of the bottom of the mixing barrel (21). The other end of the blanking pipe (11) is inserted into the inner cavity of the high-pressure spraying machine (1). The top of the mixing barrel (21) is provided with a barrel cover (22). The top of the barrel cover (22) is provided with a stirring motor (23). The power output shaft of the stirring motor (23) is rotatably connected to the center of the top of the barrel cover (22). One end of the power output shaft of the stirring motor (23) is provided with a stirring rod (24), and the stirring rod (24) is located in the inner cavity of the mixing barrel (21).

4. An air energy heat pump housing painting device according to claim 1, characterized in that: The adjusting mechanism (3) includes a support plate (31), one end of the support plate (31) is arranged on the side wall of the high-pressure spraying machine (1), a vertical plate (32) is arranged on the top of the support plate (31), a telescopic adjusting rod (33) is connected to one side of the vertical plate (32), the other end of the telescopic adjusting rod (33) is installed on the side wall of the high-pressure spraying machine (1), two limiting rods (34) are slidably connected to the side wall of the vertical plate (32), the limiting rods (34) are arranged on the support plate (31), and the bottom end of the support plate (31) is arranged on the steering mechanism (4).

5. The paint spraying device for an air - energy heat pump housing according to claim 4, wherein: The steering mechanism (4) includes a protective cover (41), a servo motor (42) is installed on the side wall of the protective cover (41), a gear is arranged on the power output shaft of the servo motor (42), an adjusting disc (43) is meshed with one side of the gear, a rotating rod (44) is arranged at the center of the adjusting disc (43), the rotating rod (44) penetrates through the center of the adjusting disc (43), and one end of the rotating rod (44) is connected to the spraying mechanism (5), the other end of the rotating rod (44) is rotatably connected to the center of the bottom of the protective cover (41), and a conical tooth ring (45) meshed with the gear is arranged on the top of the adjusting disc (43); Two limiting grooves are arranged on the top of the adjusting disc (43).

6. The painting device for the air energy heat pump housing according to claim 5, wherein: The spraying mechanism (5) further includes positioning rods (501), there are two positioning rods (501), both of the two positioning rods (501) penetrate through the inner cavity of the adjacent limiting groove, the bottom ends of the two positioning rods (501) are connected with a fixing plate (502), one side of the fixing plate (502) is connected to the air collecting hood (51) in a penetrating manner, and the center of the top of the fixing plate (502) is connected to the bottom end of the rotating rod (44).

7. An air source heat pump housing painting device according to claim 1, characterized in that: The output port diameter of the air collecting hood (51) is smaller than the input port diameter, and the cross section of the air collecting hood (51) is trapezoidal.

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