Water-based paint electrostatic spraying gun and electrostatic spraying device

Abstract

The utility model relates to the technical field of electrostatic spraying, and discloses a water paint electrostatic spraying gun and an electrostatic spraying device. The water-based paint electrostatic spraying gun comprises a gun shell, the gun shell comprises an atomizing end and an air inlet end, and the gun shell is communicated with a coating pipe allowing water-based paint to flow in. The air inlet integration seat is connected with the air inlet end, a compression air inlet is formed in the air inlet integration seat, and the air inlet integration seat is communicated with the air inlet end at the compression air inlet; the electrostatic assembly is arranged in the gun shell and comprises an electrode needle, the electrode needle is electrically connected with a power supply, the power supply is electrically connected with a turbine set, and the turbine set compresses air at the compressed air inlet; the atomization assembly is arranged at the atomization end, and the atomization assembly is connected with the electrode needle. The electrostatic spraying device comprises the electrostatic spraying gun and a paint supply mechanism. The electrostatic spraying gun has the technical effect of reducing potential safety hazards caused by damage of a high-voltage cable when the existing electrostatic spraying gun transmits static electricity through the high-voltage cable.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrostatic spraying, and in particular relates to an electrostatic spraying gun for water-based paint and an electrostatic spraying device. Background Art

[0002] Water-based paint is a kind of paint that uses water as a dispersion medium. It mainly includes emulsion or water-soluble resin, pigments, fillers and additives. Water-based paint has the characteristics of environmental protection, low volatility, fast drying and excellent adhesion. At present, in the water-based paint spraying process, electrostatic spraying devices are usually used for water-based paint spraying.

[0003] The existing electrostatic spraying device usually includes an electrostatic spraying gun, wherein the electrostatic spraying gun may include an insulating nozzle body, a high-voltage cable terminal is provided on the insulating nozzle body, a high-voltage cable is connected to the insulating nozzle body at the high-voltage cable terminal, and an electrostatic generator is externally connected through the high-voltage cable, and the electrostatic generator generates electrostatic high voltage which is introduced through the high-voltage cable. An atomizing cap is provided on the insulating nozzle body, and during the spraying process of the electrostatic spraying gun, the water-based paint is sprayed out through the atomizing cap and atomized to form fine particles, and the atomized particles are uniformly negatively charged by the electrostatic high voltage, and are finally sprayed and adsorbed on the surface of the workpiece to be sprayed with the opposite electrostatic charge.

[0004] However, when the electrostatic spray gun is in use, the high-voltage cable may be damaged. The electrostatic generator generates electrostatic high voltage and transmits it through the high-voltage cable. At this time, the electrostatic spray gun is prone to safety hazards such as static electricity leakage during the spraying process due to damage to the high-voltage cable. Utility Model Content

[0005] In order to solve the shortcomings of the prior art, the utility model provides a water-based paint electrostatic spray gun and an electrostatic spray device. The electrostatic component generates static electricity, and the water-based paint can be charged inside the gun housing to reduce the safety hazard caused by damage to the high-voltage cable when the existing electrostatic spray gun transmits static electricity through the high-voltage cable.

[0006] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0007] In a first aspect, the utility model provides a water-based paint electrostatic spray gun, comprising

[0008] A gun housing, the gun housing comprising an atomizing end and an air inlet end, the gun housing being connected to a paint tube for flowing water-based paint; an air inlet integrated seat connected to the air inlet end, the air inlet integrated seat being provided with a compressed air inlet, and being connected to the air inlet end at the compressed air inlet; an electrostatic component arranged in the gun housing, the electrostatic component comprising an electrode needle, the electrode needle being electrically connected to a power supply, the power supply being electrically connected to a turbine group, the turbine group compressing air at the compressed air inlet; and an atomizing component arranged at the atomizing end, the atomizing component being connected to the electrode needle, the water-based paint flowing in through the paint tube and being atomized and sprayed out at the atomizing component.

[0009] In some implementations, a fan-shaped air inlet and an atomizing air inlet are provided on the air inlet integrated seat, and the atomizing component introduces gas into the fan-shaped air inlet and the atomizing air inlet respectively.

[0010] In some implementations, the atomization assembly includes an air cap disposed on one side of the atomization end;

[0011] A gun nozzle is arranged on one side of the air cap and located in the gun housing, and the electrode needle is penetrated through the air cap and the gun nozzle; and a gun needle is connected to the gun nozzle and located on one side of the electrode needle; a gun needle air inlet is opened on the air inlet integrated seat, and gas is introduced into the gun needle at the gun needle air inlet.

[0012] In some implementations, a first elastic member is disposed between the turbine group and the gun housing, and the first elastic member presses against a corresponding side of the turbine group, so that the turbine group and the power supply are in contact with each other.

[0013] In some implementations, a receiving hole is provided on the gun housing, the receiving hole is respectively connected to the sector-shaped air inlet, the atomizing air inlet and the gun needle air inlet, and a piston assembly is disposed in the receiving hole.

[0014] In some implementations, a piston cap for sealing the accommodating hole is disposed on one side of the piston assembly, the piston cap is connected to the gun housing, and a second elastic member is disposed between the piston cap and the piston assembly.

[0015] In some implementations, a nut cap is disposed on the outside of the air cap, and the nut cap is detachably connected to the atomization end of the gun housing.

[0016] In some implementations, a protective cover is disposed on the nut cap, the protective cover is detachably connected to the nut cap, and a cleaning component for cleaning the electrode needle is disposed inside the protective cover.

[0017] In the second aspect, the utility model provides an electrostatic spraying device, including the water-based paint electrostatic spray gun as described above, a paint supply mechanism is arranged on one side of the paint tube, and the paint supply mechanism includes: an isolation box; a paint storage bucket, which is arranged in the isolation box and connected to the paint tube; and a diaphragm pump, which is arranged on the paint tube and located in the isolation box.

[0018] In some implementations, the isolation box includes an isolation door, and the isolation door is provided with an electrostatic release valve, and the isolation door is movable to open so as to control the electrostatic release valve to be turned on when the isolation door is opened.

[0019] In summary, the utility model has at least the following benefits:

[0020] 1. The water-based paint electrostatic spray gun provided by the utility model, after the water-based paint flows into the gun housing through the paint pipe, is atomized through the atomizing assembly, and the water-based paint is dispersed to form fine particles. When the water-based paint is atomized, compressed air enters the gun housing through the compressed air inlet and the air inlet integrated seat in turn, and the compressed air drives the turbine group to generate electricity. The power supply contacts the electrode needle and provides a high voltage to the electrode needle. The electrode needle is connected to the atomizing assembly, and a high-voltage electric field is applied to the atomizing assembly, so that the atomized water-based paint particles are given an electrostatic charge, and the water-based paint particles with the electrostatic charge are sprayed out from the atomizing assembly.

[0021] The electrostatic component forms static electricity inside the gun housing. Compared with the traditional electrostatic spray gun that obtains static electricity high voltage through external high-voltage cables and electrostatic generators, it can solve the problem of static electricity leakage caused by damage to high-voltage cables, and improve the safety and convenience of using electrostatic spray guns. At the same time, after static electricity is formed in the gun housing, the high voltage directly acts on the water-based paint particles, which can reduce the loss of static electricity during the transmission process and is more conducive to the spraying of water-based paint.

[0022] 2. In the electrostatic spraying device provided by the utility model, when electrostatically spraying water-based paint, the diaphragm pump pumps the water-based paint stored in the paint storage barrel into the paint pipe and then transports it to the atomization component. The isolation box can reduce the static electricity generated by the electrostatic component from being lost from the diaphragm pump. At the same time, the isolation box can reduce the possibility of workers being injured by static electricity due to accidentally touching the diaphragm pump by isolating the diaphragm pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is an exploded view of an electrostatic spray gun for water-based paint according to a specific embodiment of the present invention.

[0024] Figure 2 The utility model is a schematic diagram of the overall structure of an electrostatic spray gun for water-based paint according to a specific embodiment of the utility model.

[0025] Figure 3 The utility model is a side view of an electrostatic spray gun for water-based paint according to a specific embodiment of the utility model.

[0026] Figure 4 This is a schematic diagram of the overall structure of an electrostatic spray gun for water-based paint according to Example 3 of the utility model.

[0027] Figure 5 The utility model is a schematic diagram of the overall structure of an electrostatic spraying device according to a specific embodiment of the utility model.

[0028] Markings in the accompanying drawings:

[0029] 1. Gun housing; 11. Gun body; 111. Atomizing end; 112. Air inlet end; 12. Paint tube; 121. Bracket; 122. Hose connector; 123. Paint adapter; 14. Gun seat; 141. Accommodating hole; 142. Sealing ring; 15. Piston assembly; 151. Second elastic member; 152. Piston cap; 16. Nut cap; 161. Protective cover;

[0030] 2. Air intake integrated seat; 21. Compression air intake; 22. Fan-shaped air intake; 23. Atomization air intake; 24. Needle air intake; 25. Turbine exhaust; 25. Adapter;

[0031] 3. Electrostatic assembly; 31. Electrode needle; 32. Power supply; 33. Turbine assembly; 34. First elastic member;

[0032] 4. Atomizing assembly; 41. Air cap; 42. Gun nozzle; 43. Gun needle;

[0033] 5. Isolation box; 51. Diaphragm pump; 52. Paint storage bucket; 53. Air regulating valve; 54. Back pressure valve; 55. Pressure regulating valve; 56. Filter; 57. Agitator. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] Please refer to the attached Figure 1 and Figure 2The utility model is a water-based paint electrostatic spray gun, comprising a gun housing 1, the gun housing 1 comprising an atomizing end 111 and an air inlet end 112. As shown in some specific embodiments, the gun housing 1 comprises a gun body 11 and a gun seat 14, wherein the atomizing end 111 is located at one end of the gun body 11 away from the gun seat 14, and the air inlet end 112 is located at one end of the gun seat 14 away from the gun body 11.

[0038] The gun body 11 is connected to a paint tube 12 for circulating water-based paint. As shown in some specific embodiments, a paint adapter 25123 and a hose connector 122 are provided between the paint tube 12 and the gun body 11. The hose connector 122 is inserted into the paint adapter 25123. The hose connector 122 is connected to the paint tube 12. When the paint adapter 25123 is connected to the gun body 11, the connection between the gun body 11 and the paint tube 12 is completed.

[0039] The gun seat 14 is provided with an air intake integrated seat 2 at the air intake end 112. In a preferred embodiment, a sealing gasket is provided between the air intake integrated seat 2 and the gun seat 14. Specifically, the sealing gasket is preferably but not limited to a rubber gasket. The provision of the sealing gasket is conducive to ensuring the air tightness between the air intake integrated seat 2 and the gun seat 14. The air intake integrated seat 2 and the gun seat 14 are detachably connected. Specifically, the air intake integrated seat 2 and the gun seat 14 can be assembled by bolts, which is conducive to improving the convenience of daily maintenance of the air intake integrated seat 2 and the gun seat 14, and at the same time, the sealing gasket can be replaced in a timely manner.

[0040] A compression air inlet 21 and a turbine exhaust port 25 are formed through one side of the air intake integrated seat 2. The air intake integrated seat 2 is connected to the gun seat 14 through sealing gaskets at the compression air inlet 21 and the turbine exhaust port 25 respectively.

[0041] The gun body 11 is provided with an atomizing assembly 4 at the atomizing end 111 . After the water-based paint enters the gun body 11 through the paint tube 12 , it is dispersed into fine particles by the atomizing assembly 4 and sprayed on the surface of the object to be sprayed.

[0042] The electrostatic component 3 is arranged on one side of the atomizing component 4 close to the air inlet end 112. The electrostatic component 3 includes an electrode needle 31. The electrode needle 31 is connected to the atomizing component 4 so that the water-based paint is atomized to form a water-based spray with static charge. The electrode needle 31 is electrically connected to a power supply 32 on one side close to the air inlet end 112. The power supply 32 is located in the gun body 11 and is in contact with the gun needle 43 and the electrode needle 31 respectively. The power supply 32 is in contact with the electrode needle 31. The power supply 32 forms an electrostatic high voltage at the electrode needle 31, and applies the electrostatic high voltage to the atomizing component 4 through the electrode needle 31. The water-based paint can be charged with static charge when it is sprayed out from the atomizing component 4.

[0043] A turbine group 33 is provided on the side of the power supply 32 away from the electrode needle 31. The turbine group 33 is electrically connected to the power supply 32. Specifically, the turbine group 33 includes a power contact, and the turbine group 33 contacts the power supply 32 through the power contact. At the same time, the turbine group 33 includes an air flow limiting valve. The turbine group 33 is connected to the air inlet integrated seat 2 at the compressed air inlet 21 through the air flow limiting valve. The air flow limiting valve controls the speed of the turbine group 33. Compressed air is introduced from the compressed air inlet 21 and enters the turbine group 33 through the air inlet integrated seat 2 and the gun seat 14 in turn. The compressed air drives the turbine group 33 to generate electricity, and the voltage in the gun body 11 increases. The turbine group 33 applies high-voltage static electricity to the electrode needle 31 through the power supply 32. The power of the static electricity generated by the turbine group 33 is relatively small, which is conducive to reducing the possibility of the risk of causing a point failure due to a malfunction of the electrostatic spray gun.

[0044] A first elastic member 34 is provided between the turbine group 33 and the gun seat 14. One end of the first elastic member 34 along the extension direction abuts against the corresponding end of the turbine group 33, and the other end abuts against the inner wall of the gun seat 14. Under the elastic force of the first elastic member 34, the turbine group 33 and the power supply 32 are in good contact. As shown in some specific embodiments, the first elastic member 34 is preferably but not limited to a spring.

[0045] As shown in some specific embodiments, a bracket 121 is provided at the bottom of the air intake integrated seat 2, and the paint tube 12 is inserted into the bracket 121 to fix the paint tube 12. The bracket 121 and the air intake integrated seat 2 are detachably connected. Specifically, the bracket 121 and the air intake integrated seat 2 are assembled by bolts.

[0046] When the water-based paint is atomized, compressed air enters the gun housing 1 through the compressed air inlet 21, and the compressed air drives the turbine group 33 to generate electricity. The turbine group 33 forms high-voltage static electricity through the power supply 32 and the electrode needle 31. When the water-based paint enters the gun housing 1 from the paint tube 12, the atomizing component 4 disperses the water-based paint into fine particles, and the high-voltage static electricity gives the water-based paint particles an electrostatic charge. The water-based paint particles with static charges are sprayed out from the gun nozzle 42 and the air cap 41. The electrostatic spray gun forms high-voltage static electricity in the gun housing 1 through the electrostatic component 3, which can solve the problem of static electricity leakage that is easy to occur when an external high-voltage cable and an electrostatic generator are connected, which is conducive to improving the safety of use.

[0047] Embodiment 2:

[0048] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the atomizing assembly 4 and the air intake integrated seat 2 of the utility model, see Figure 1~Figure 3 .

[0049] The air inlet integrated seat 2 is provided with a fan-shaped air inlet 22, an atomizing air inlet 23 and a gun needle 43 air inlet 24, which are all located on the side where the compression air inlet 21 and the turbine exhaust port 25 are located on the air inlet integrated seat 2. The air inlet integrated seat 2 is connected to the gun housing 1 at the fan-shaped air inlet 22, the atomizing air inlet 23 and the gun needle 43 air inlet 24. Among them, the fan-shaped air inlet 22 can effectively guide and control the flow of gas to optimize the flow direction and speed of the airflow to meet different emission requirements.

[0050] Specifically, the air intake integrated seat 2 is provided with adapters 25 in the compressed air inlet 21, the fan-shaped air inlet 22, the atomizing air inlet 23, the gun needle 43 air inlet 24 and the turbine exhaust port 25. The air intake integrated seat 2 realizes the air intake of gas through the fan-shaped air inlet 22, the atomizing air inlet 23 and the gun needle 43 air inlet 24, wherein the gas can enter the gun housing 1 from the compressed air inlet 21, the fan-shaped air inlet 22, the atomizing air inlet 23 and the gun needle 43 air inlet 24, and be discharged to the gun housing 1 from the turbine exhaust port 25. The setting of the air intake integrated seat 2 makes the internal structure of the electrostatic spray gun compact, which is conducive to improving the convenience of use.

[0051] A receiving hole 141 is provided on one side of the gun seat 14. Specifically, the receiving hole 141 is a circular through hole. The gun seat 14 is provided with a piston assembly 15 in the receiving hole 141. The piston assembly 15 diverts the gas in the compressed air inlet 21, the fan-shaped air inlet 22, the atomized air inlet 23, the gun needle 43 air inlet 24 and the turbine exhaust port 25 in the gun body 11. The air intake integrated seat 2 controls the external air source through the piston assembly 15. In some specific embodiments, a piston cap 152 is provided on one side of the piston assembly 15. The piston cap 152 is connected to the gun seat 14 in the receiving hole 141. Specifically, the piston cap 152 can be sealed and connected to the gun seat 14 through a rubber ring. A second elastic member 151 is disposed between the piston cap 152 and the piston assembly 15, one end of the second elastic member 151 along the telescopic direction abuts against the corresponding end of the piston assembly 15, and the other end abuts against the corresponding end of the piston cap 152, and the piston assembly 15 is tightly installed in the receiving hole 141 under the elastic force of the second elastic member 151. In some specific embodiments shown, the second elastic member 151 is preferably, but not limited to, a spring, and the second elastic member 151 is easy to assemble and disassemble.

[0052] The atomizing assembly 4 includes a nut cap 16, which is detachably connected to the gun body 11. Specifically, the inner wall of the nut cap 16 is provided with a thread, and the nut cap 16 is threadedly connected to the atomizing end 111. An air cap 41 is arranged inside the nut cap 16, and a gun nozzle 42 is arranged on a side of the air cap 41 away from the nut cap 16. The gun nozzle 42 and the air cap 41 are installed in the gun body 11 through the nut cap 16.

[0053] A gun needle 43 is provided on the side of the gun nozzle 42 away from the air cap 41. The gun needle 43 is connected to the gun nozzle 42 and fixed in the gun body 11 through the gun nozzle 42. The electrode needle 31 passes through the gun nozzle 42, the air cap 41 and the nut cap 16 in sequence. Specifically, the electrode needle 31 is fixed in the gun body 11 through the gun nozzle 42. The electrode needle 31 is located on one side of the gun needle 43. The gun needle 43 cooperates with the electrode needle 31 to apply electrostatic high voltage to the gun nozzle 42, and the water-based paint can be charged with static electricity when sprayed out at the gun nozzle 42. Specifically, the gun needle 43 is coated with insulating grease before installation to ensure safety during the spraying process. The power supply 32 is in contact with the gun needle 43, and the gun needle 43 charges the water-based paint during the atomization and dispersion process to increase the surface charge density of the water-based paint particles.

[0054] When the water-based paint is atomized and sprayed through the atomizing assembly 4, the gas can pass through the fan-shaped air inlet 22, the atomizing air inlet 23 and the air inlet 24 of the gun needle 43, respectively, and sequentially pass through the air inlet integrated seat 2, the gun seat 14 to the gun body 11. The gun nozzle 42 and the air cap 41 disperse the water-based paint to form a uniform paint mist under the action of air pressure. Among them, the gas at the air inlet 24 of the gun needle 43 can realize airflow control through the gun needle 43, thereby adjusting the spraying speed of the water-based paint.

[0055] When the water-based paint is atomized, the external air source enters the gun housing 1 from the atomizing air inlet 23, the fan-shaped air inlet 22 and the gun needle 43 air inlet 24, and the gun nozzle 42 and the air cap 41 disperse the water-based paint into fine particles under the action of gas pressure, and the high-voltage static electricity gives the water-based paint particles an electrostatic charge, and the water-based paint particles with the electrostatic charge are sprayed out from the gun nozzle 42 and the air cap 41. The electrostatic spray gun forms high-voltage static electricity in the gun housing 1 through the electrostatic component 3, which can solve the problem of electrostatic leakage when an external high-voltage cable and an electrostatic generator are connected, and is conducive to improving the safety of use.

[0056] Embodiment 3:

[0057] The difference between this embodiment and embodiment 1 is that this embodiment optimizes the structure of the atomizing assembly 4 of the utility model.

[0058] See also Figure 4 In this embodiment, a protective sleeve 161 is provided on the nut cap 16, and the electrode needle 31 is inserted into the protective sleeve 161. The protective sleeve 161 is detachably connected to the nut cap 16. In some specific embodiments, a thread groove is provided at the penetration point of the electrode needle 31 in the nut cap 16, and the outer wall of the protective sleeve 161 is threadedly connected to the thread cap at the thread groove. A cleaning component for cleaning the electrode needle 31 is provided in the protective sleeve 161.

[0059] In a preferred embodiment, the cleaning assembly includes a panel, which is specifically an annular plate and is located in the protective sleeve 161. A third elastic member is provided between the panel and the inner wall of the protective sleeve 161. Specifically, the third elastic member is preferably, but not limited to, a spring. One end of the third elastic member along the telescopic direction is connected to the inner wall of the protective sleeve 161, and the other end is connected to the corresponding side of the panel. A cleaning pad is attached to the side of the panel away from the third elastic member, and the third elastic member makes the cleaning pad contact the electrode needle 31 through the panel. When the protective sleeve 161 is sleeved on the electrode needle 31, the cleaning pad can clean the residual water-based paint on the surface of the electrode needle 31, and play a certain protective role on the unused electrode needle 31, which is conducive to improving the convenience of use.

[0060] Embodiment 4:

[0061] This embodiment provides an electrostatic spraying device based on the above embodiment. Figure 1 and Figure 5 .

[0062] An electrostatic spraying device includes the electrostatic spraying gun, a paint supply mechanism is provided on one side of the electrostatic spraying gun, and the paint supply mechanism includes a diaphragm pump 51, and the diaphragm pump 51 is connected to the electrostatic spraying gun through a paint pipe 12 to provide water-based paint to the atomizing assembly 4 through the paint pipe 12. A paint storage barrel 52 for storing water-based paint is provided on one side of the diaphragm pump 51, and an isolation box 5 is provided on the outer side cover of the paint storage barrel 52 and the diaphragm pump 51. Specifically, the isolation box 5 is a box made of electrostatic isolation material, and the isolation box 5 is connected to the ground wire.

[0063] In a preferred embodiment, the isolation box 5 includes an isolation door, on which an electrostatic release valve is provided. The isolation box 5 controls the closure of the electrostatic release valve by opening and closing the isolation door. When the staff opens the isolation door, the electrostatic release valve is turned on to release static electricity. The isolation box 5 is safe to use and can reduce injuries to the human body caused by static electricity.

[0064] In some specific embodiments, the paint tube 12 is provided with a flow control valve and a back pressure valve 54. The flow control valve can control the flow of water-based paint in the paint tube 12, and the back pressure valve 54 can control the pressure stability of the water-based paint in the paint tube 12 during the use of the electrostatic spray gun. The diaphragm pump 51 is provided with a pressure regulating valve 55, and the pressure regulating valve 55 adjusts the pressure of the diaphragm pump 51. In addition, a filter 56 is provided on one side of the diaphragm pump 51, and the filter 56 can filter the water-based paint to reduce the impact of impurities on the normal use of the electrostatic spray gun. The paint storage barrel 52 is provided with an agitator 57, and the agitator 57 stirs the water-based paint in the paint storage barrel 52 to maintain the uniformity of the water-based paint.

[0065] In some specific embodiments, the turbine group 33 is connected to the outside of the gun housing 1 with an electrostatic release cylinder. When the isolation door is closed, the electrostatic release cylinder is adjusted by the piston rod stroke to control the compressed gas to enter the gun housing 1. The electrostatic component 3 works and generates static electricity. The electrostatic spray gun can further ensure the safety of use through the control of the electrostatic release cylinder.

[0066] With the setting of the isolation box 5, when the water-based paint is electrostatically sprayed, the diaphragm pump 51 pumps the water-based paint stored in the paint storage bucket 52 into the paint pipe 12 and transports it to the atomization component 4. The isolation box 5 can reduce the static electricity generated by the electrostatic component 3 from being lost from the diaphragm pump 51. At the same time, the isolation box 5 can reduce the possibility of workers being injured by static electricity due to accidentally touching the diaphragm pump 51 by isolating the diaphragm pump 51.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0069] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0070] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A water-based paint electrostatic spray gun, characterized in that: include A gun housing (1), the gun housing (1) comprising an atomization end (111) and an air inlet end (112), the gun housing (1) being connected to a paint pipe (12) for flowing water-based paint; An air intake integrated seat (2) connected to the air intake end (112); a compression air intake port (21) is provided on the air intake integrated seat (2) and is connected to the air intake end (112) at the compression air intake port (21); An electrostatic component (3) is disposed in the gun housing (1), the electrostatic component (3) comprising an electrode needle (31), the electrode needle (31) being electrically connected to a power supply (32), the power supply (32) being electrically connected to a turbine group (33), the turbine group (33) compressing air at the compressed air inlet (21); as well as An atomizing assembly (4) is disposed at the atomizing end (111); the atomizing assembly (4) is connected to the electrode needle (31); water-based paint flows in through the paint tube (12) and is atomized and sprayed out at the atomizing assembly (4).

2. The water-based paint electrostatic spray gun according to claim 1, characterized in that: The air inlet integrated seat (2) is provided with a fan-shaped air inlet (22) and an atomizing air inlet (23), and the atomizing assembly (4) is provided with gas at the fan-shaped air inlet (22) and the atomizing air inlet (23), respectively.

3. The water-based paint electrostatic spray gun according to claim 2, characterized in that: The atomizing assembly (4) comprises An air cap (41) is disposed on one side of the atomization end (111); A gun nozzle (42) is arranged on one side of the air cap (41) and is located in the gun housing (1); the electrode needle (31) is inserted through the air cap (41) and the gun nozzle (42); as well as A gun needle (43), connected to the gun nozzle (42) and located on one side of the electrode needle (31); The air inlet integrated seat (2) is provided with an air inlet (24) for a gun needle (43), and the gun needle (43) is introduced with gas at the air inlet (24) for the gun needle (43).

4. The water-based paint electrostatic spray gun according to claim 1, characterized in that: A first elastic member (34) is provided between the turbine group (33) and the gun housing (1), and the first elastic member (34) presses against a corresponding side of the turbine group (33), so that the turbine group (33) and the power supply (32) are in contact with each other.

5. The water-based paint electrostatic spray gun according to claim 3, characterized in that: The gun housing (1) is provided with a receiving hole (141), the receiving hole (141) being respectively connected to the fan-shaped air inlet (22), the atomizing air inlet (23) and the air inlet of the gun needle (43), and a piston assembly (15) is arranged in the receiving hole (141).

6. The water-based paint electrostatic spray gun according to claim 5, characterized in that: A piston cap (152) for sealing the accommodating hole (141) is provided on one side of the piston assembly (15); the piston cap (152) is connected to the gun housing (1); and a second elastic member (151) is provided between the piston cap (152) and the piston assembly (15).

7. The water-based paint electrostatic spray gun according to claim 3, characterized in that: A nut cap (16) is arranged on the outside of the air cap (41), and the nut cap (16) is detachably connected to the atomization end (111) of the gun housing (1).

8. The water-based paint electrostatic spray gun according to claim 7, characterized in that: A protective sleeve (161) is provided on the nut cap (16), the protective sleeve (161) is detachably connected to the nut cap (16), and a cleaning component for cleaning the electrode needle (31) is provided inside the protective sleeve (161).

9. An electrostatic spraying device, characterized in that: The electrostatic water-based paint spray gun according to any one of claims 1 to 8, wherein a paint supply mechanism is provided on one side of the paint tube (12), and the paint supply mechanism comprises: Isolation box (5); A paint storage bucket (52) is disposed in the isolation box (5) and is connected to the paint pipe (12); and A diaphragm pump (51) is provided on the coating material pipe (12) and is located in the isolation box (5).

10. The electrostatic spraying device according to claim 9, characterized in that: The isolation box (5) comprises an isolation door, on which a static electricity release valve is arranged, and the isolation door is movable to open, so as to control the static electricity release valve to be turned on when the isolation door is opened.

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