Spray gun structure for electrostatic spraying

Abstract

The utility model discloses a spray gun structure for electrostatic spraying. The spray gun structure comprises a gun body, a switching mechanism and a cleaning mechanism, a gun body is arranged on the upper surface of the gun handle, a spray gun nozzle is arranged at the right end of the gun body, and a mounting plate is arranged at the lower end of the gun handle; the switch mechanism comprises a control switch, a lower side rotating seat, a handle and an abutting block, the control switch is arranged on the upper side of the right side face of the gun handle, the left end of the gun body is rotationally connected with the lower side rotating seat, the handle is arranged on the lower surface of the lower side rotating seat, and the abutting block is arranged on the left side of the handle and corresponds to the left and right positions of the control switch; the input end of the control switch is electrically connected with an external power supply; the cleaning mechanism is arranged on the right side of the upper end of the gun body, the switch mechanism further comprises a spring and a limiting rod, the spring is arranged between the left side face of the handle and the right side face of the gun handle, and the limiting rod is arranged on the right side face of the gun handle.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic spraying, in particular to a spray gun structure for electrostatic spraying. Background Art

[0002] Electrostatic spraying refers to a coating method that uses the principle of corona discharge to make atomized paint negatively charged under the action of a high-voltage DC electric field, and then adsorbed on the surface of a positively charged substrate for discharge. Electrostatic spraying equipment consists of a spray gun, a spray cup, and an electrostatic spray high-voltage power supply. Some electrostatic spray gun structures have paint residue at the muzzle of the spray gun during use. The residual paint at the muzzle of the spray gun needs to be cleaned to avoid the paint solidifying and affecting the reuse of the spray gun. Most of the existing cleaning methods require periodic cleaning of the paint on the spray gun after a period of use.

[0003] This regular cleaning method has some minor problems, such as not being able to clean in time after painting, and being troublesome to clean after the paint dries. The dried paint may damage the parts of the spray gun during the cleaning process, reducing the life of the spray gun. For this reason, we propose a spray gun structure for electrostatic spraying. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a spray gun structure for electrostatic spraying, which has a long service life and is easy to clean, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spray gun structure for electrostatic spraying, comprising a gun body, a switch mechanism and a cleaning mechanism;

[0006] Gun handle: The upper surface of the gun handle is provided with a gun body, the right end of the gun body is provided with a spray gun nozzle, and the lower end of the gun handle is provided with a mounting plate;

[0007] The switch mechanism includes a control switch, a lower rotating seat, a handle and an abutment block. The control switch is arranged on the upper side of the right side surface of the gun handle. The left end of the gun body is rotatably connected to the lower rotating seat. The lower surface of the lower rotating seat is provided with a handle. The left side of the handle is provided with an abutment block. The abutment block corresponds to the left and right positions of the control switch. The input end of the control switch is electrically connected to an external power supply.

[0008] Cleaning mechanism: It is set on the upper right side of the gun body. It can be quickly cleaned after each use to extend the service life of the spray gun.

[0009] Furthermore, the switch mechanism also includes a spring and a limit rod, wherein the spring is arranged between the left side of the handle and the right side of the gun handle, and the right side of the gun handle is provided with a limit rod, which has the function of manually quickly switching the spray gun.

[0010] Furthermore, the cleaning mechanism includes a fixed swivel seat, a connecting rod, an avoidance groove, an upper magnetic pole block, a lower tightening block and a rear magnetic pole block. The swivel seat is arranged on the upper surface of the gun body, the interior of the swivel seat is rotatably connected to the connecting rod via a rotating shaft, and the right end of the connecting rod is also rotatably connected to the docking seat via a rotating shaft. An avoidance groove is opened on the upper surface of the connecting rod, and an upper magnetic pole block is arranged inside the avoidance groove. A lower tightening block is arranged on the right side of the upper surface of the gun body, and a rear magnetic pole block is arranged in the middle of the upper surface of the gun body to provide guidance for the wiping assembly.

[0011] Furthermore, the cleaning mechanism also includes a wiping mechanism, which includes a connecting handle, a circular rotating frame, a rotating groove, a rotating disk, a manual rotating block and a wiping towel. The connecting handle is arranged at the right end of the docking seat, and a circular rotating frame is provided at the right end of the connecting handle. A rotating groove is opened inside the circular rotating frame, and a rotating disk is rotatably connected inside the rotating groove. A manual rotating block is provided at the upper end of the rotating disk, and a wiping towel is provided at the lower end of the rotating disk to realize the function of the wiping nozzle.

[0012] Furthermore, it also includes an air intake pipe, which is arranged on the left side of the upper surface of the mounting plate, a feed pipe is arranged on the right side of the upper surface of the mounting plate, an atomizer is arranged inside the spray gun nozzle, the upper end of the feed pipe is connected with the inlet of the atomizer, the upper end of the air intake pipe is connected with the air inlet of the spray gun nozzle, the lower end of the feed pipe is externally connected to an external feeding device, and the lower end of the air intake pipe is externally connected to an external air supply device to realize the function of air intake and feeding.

[0013] Furthermore, it also includes a solenoid valve, which is connected in series to the upper sides of the feed pipe and the air intake pipe, and the input end of the solenoid valve is electrically connected to the output end of the control switch for electrically controlling the switch of the spray gun.

[0014] Furthermore, it also includes an electrostatic connection head, which is arranged on the right side of the front side of the gun body, an electrostatic access line is plugged into the inside of the electrostatic connection head, the rear side of the electrostatic connection head extends to the inside of the spray gun nozzle, and the other end of the electrostatic access line is connected to an external electrostatic generator to give the paint an electrostatic charge.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. Pick up the gun handle manually. When you need to spray, press the handle backward manually. The abutment block on the back of the handle presses the control switch tightly to control the normal operation of the electrostatic spray gun. After use, release the handle. The tension of the spring will automatically push the handle open. The abutment block releases the pressure on the control switch and stops the operation, avoiding the trouble of manually pressing the control switch directly, which is convenient for daily use.

[0017] 2. After use, when you need to clean the spray gun, you can manually turn the connecting rod. The connecting rod takes the center of the fixed swivel seat as the axis, and the end of the connecting rod rotates to the right until the lower surface of the connecting rod contacts the lower tightening block. At this time, the circular rotating frame buckles the spray gun nozzle. At this time, manually rotate the manual rotating block, which drives the turntable to rotate, and then drives the wiping towel to wipe the spray gun nozzle. Because the turntable and the circular rotating frame are both metal, the static electricity of the paint can be eliminated when wiping the spray gun nozzle and the residual paint inside it can be wiped clean. After wiping, rotate the connecting rod in the opposite direction until the upper magnetic pole block absorbs the rear magnetic pole block to complete the fixation, which is convenient for daily use. It can be quickly cleaned after each use to extend the service life of the spray gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] In the figure: 1 gun handle, 2 gun body, 3 air inlet pipe, 4 feed pipe, 5 solenoid valve, 6 atomizer, 7 spray gun nozzle, 8 switch mechanism, 81 control switch, 82 lower side swivel seat, 83 handle, 84 abutment block, 85 spring, 86 limit rod, 9 cleaning mechanism, 91 fixed swivel seat, 92 connecting rod, 93 wiping mechanism, 931 connecting handle, 932 circular swivel frame, 933 swivel groove, 934 turntable, 935 manual swivel block, 936 wiping towel, 94 avoidance groove, 95 upper side magnetic pole block, 96 lower side tightening block, 97 rear side magnetic pole block, 10 electrostatic connector. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , This embodiment provides a technical solution: a spray gun structure for electrostatic spraying, including a gun body 1, a switch mechanism 8 and a cleaning mechanism 9;

[0022] The gun handle 1 has a gun body 2 on its upper surface, a spray gun nozzle 7 is provided at the right end of the gun body 2, and a mounting plate is provided at the lower end of the gun handle 1;

[0023] The switch mechanism 8 includes a control switch 81, a lower rotating seat 82, a handle 83 and an abutment block 84. The control switch 81 is arranged on the upper side of the right side surface of the gun handle 1. The left end of the gun body 2 is rotatably connected to the lower rotating seat 82. The lower surface of the lower rotating seat 82 is provided with a handle 83. The left side of the handle 83 is provided with an abutment block 84. The abutment block 84 corresponds to the left and right positions of the control switch 81. The input end of the control switch 81 is electrically connected to an external power supply. The switch mechanism 8 also includes a spring 85 and a limit rod 86. The spring 85 is arranged on the handle The right side of the gun handle 1 is provided with a limit rod 86, and also includes an air inlet pipe 3, which is arranged on the left side of the upper surface of the mounting plate, and a feed pipe 4 is arranged on the right side of the upper surface of the mounting plate. An atomizer 6 is arranged inside the spray gun nozzle 7, and the upper end of the feed pipe 4 is connected to the inlet of the atomizer 6, and the upper end of the air inlet pipe 3 is connected to the air inlet of the spray gun nozzle 7. The lower end of the feed pipe 4 is externally connected to an external feeding device, and the lower end of the air inlet pipe 3 is externally connected to an external air supply device, and also includes a solenoid valve 5 The electromagnetic valve 5 is connected in series to the upper side of the feed pipe 4 and the air intake pipe 3, the input end of the electromagnetic valve 5 is electrically connected to the output end of the control switch 81, and also includes an electrostatic connector 10, which is arranged on the right side of the front side of the gun body 2, and the electrostatic access line is plugged into the electrostatic connector 10, and the rear side of the electrostatic connector 10 extends to the inside of the spray gun nozzle 7, and the other end of the electrostatic access line is externally connected to an external electrostatic generator. When the gun handle 1 is manually picked up and spraying is required, the handle 83 is manually pressed backward, and the rear side of the handle 83 The abutment block 84 presses against the control switch 81, and the control switch 81 regulates the operation of the solenoid valve 5 and regulates the external electrostatic generator at the same time. The electrostatic charge is emitted by the electrostatic connector 10 along with the electrostatic charge access line. At this time, the pigment enters the spray gun nozzle 7 along with the feed pipe 4, and is atomized by the atomizer 6 and enters the spray gun nozzle 7. Then, the atomized pigment is given electrostatic charge by the electrostatic connector 10. At the same time, the air inlet pipe 3 applies high-pressure gas to the spray gun nozzle 7, and the pigment is ejected from the spray gun nozzle 7 along with the high-pressure gas.

[0024] Cleaning mechanism 9: It is arranged on the right side of the upper end of the gun body 2. The cleaning mechanism 9 includes a fixed rotating seat 91, a connecting rod 92, an avoidance groove 94, an upper magnetic pole block 95, a lower tightening block 96 and a rear magnetic pole block 97. The rotating seat 91 is arranged on the upper surface of the gun body 2. The interior of the rotating seat 91 is connected to the connecting rod 92 by rotating the shaft. The right end of the connecting rod 92 is also connected to the docking seat by rotating the shaft. The upper surface of the connecting rod 92 is provided with an avoidance groove 94. The interior of the avoidance groove 94 is An upper magnetic pole block 95 is provided, a lower pressing block 96 is provided on the right side of the upper surface of the gun body 2, a rear magnetic pole block 97 is provided in the middle of the upper surface of the gun body 2, the cleaning mechanism 9 also includes a wiping mechanism 93, the wiping mechanism 93 includes a connecting handle 931, a circular rotating frame 932, a rotating groove 933, a rotating disk 934, a manual rotating block 935 and a wiping towel 936, the connecting handle 931 is arranged at the right end of the docking seat, the right end of the connecting handle 931 is provided with a circular rotating frame 932, and the circular rotating frame 933 is provided. The rotating frame 932 is provided with a rotating groove 933, and the rotating groove 933 is rotatably connected to a rotating disk 934. The upper end of the rotating disk 934 is provided with a manual rotating block 935, and the lower end of the rotating disk 934 is provided with a wiping towel 936. After use, the connecting rod 92 can be manually toggled, and the connecting rod 92 takes the center of the fixed rotating seat 91 as the axis, and the end of the connecting rod 92 rotates to the right until the lower surface of the connecting rod 92 contacts the lower side tightening block 96. At this time, the circular rotating frame 932 fastens the spray gun nozzle 7, and the manual rotating block 935 is manually rotated at this time, thereby driving the rotating disk 934 to rotate, and then driving the wiping towel 936 to wipe the spray gun nozzle 7. Because the rotating disk 934 and the circular rotating frame 932 are both metal, the static electricity of the paint can be eliminated when wiping the spray gun nozzle 7 and the paint remaining inside it can be wiped clean. After wiping, the connecting rod 92 is rotated in the opposite direction until the upper magnetic pole block 95 absorbs the rear magnetic pole block 97 to complete the fixation, which is convenient for daily use.

[0025] The working principle of the spray gun structure for electrostatic spraying provided by the utility model is as follows: manually pick up the gun handle 1, and when spraying is required, manually press the handle 83 backwards, and the abutment block 84 on the rear side of the handle 83 presses the control switch 81 tightly, and the control switch 81 regulates the operation of the solenoid valve 5, and at the same time regulates the external electrostatic generator. The static electricity is emitted by the electrostatic connector 10 along the electrostatic access line. At this time, these pigments enter the interior of the spray gun nozzle 7 along the feed pipe 4, and are then atomized through the atomizer 6 and enter the interior of the spray gun nozzle 7. Then, these atomized pigments are given static electricity by the electrostatic connector 10, and at the same time, the air intake pipe 3 applies high-pressure gas to the spray gun nozzle 7, and the pigments are sprayed out of the spray gun nozzle 7 along with the high-pressure gas. After use, The connecting rod 92 can be manually moved, and the connecting rod 92 takes the center of the fixed rotating seat 91 as the axis, and the end of the connecting rod 92 rotates to the right until the lower surface of the connecting rod 92 contacts the lower side tightening block 96. At this time, the circular rotating frame 932 fastens the spray gun nozzle 7, and the turntable 934 is embedded in the spray gun nozzle 7. At this time, the manual rotating block 935 is manually rotated, thereby driving the turntable 934 to rotate, and then driving the wiping towel 936 to wipe the spray gun nozzle 7. Because the turntable 934 and the circular rotating frame 932 are both metal, the static electricity of the paint can be eliminated when wiping the spray gun nozzle 7 and the residual paint inside it can be wiped clean. After wiping, the connecting rod 92 is rotated in the opposite direction until the upper magnetic pole block 95 absorbs the rear magnetic pole block 97 to complete the fixation, which is convenient for daily use.

[0026] It is worth noting that the solenoid valve 5 disclosed in the above embodiment can be freely configured according to the actual application scenario. It is recommended to use a 4M series two-position five-way solenoid valve for the solenoid valve 5. The control switch 81 is provided with a control button corresponding to the solenoid valve 5 and used to control its switch.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A spray gun structure for electrostatic spraying, characterized in that: It comprises a gun body (2), a switch mechanism (8) and a cleaning mechanism (9); A gun handle (1): a gun body (2) is provided on its upper surface, a spray gun nozzle (7) is provided at the right end of the gun body (2), and a mounting plate is provided at the lower end of the gun handle (1); The switch mechanism (8) comprises a control switch (81), a lower rotating seat (82), a handle (83) and an abutment block (84), wherein the control switch (81) is arranged on the upper side of the right side surface of the gun handle (1), the left end of the gun body (2) is rotatably connected to the lower rotating seat (82), the lower surface of the lower rotating seat (82) is provided with a handle (83), the left side of the handle (83) is provided with an abutment block (84), the abutment block (84) corresponds to the left and right positions of the control switch (81), and the input end of the control switch (81) is electrically connected to an external power supply; Cleaning mechanism (9): It is arranged on the upper right side of the gun body (2).

2. The electrostatic spraying gun structure according to claim 1, characterized in that: The switch mechanism (8) further comprises a spring (85) and a limiting rod (86); the spring (85) is arranged between the left side of the handle (83) and the right side of the gun handle (1); and the limiting rod (86) is arranged on the right side of the gun handle (1).

3. The electrostatic spraying gun structure according to claim 1, characterized in that: The cleaning mechanism (9) comprises a fixed rotating seat (91), a connecting rod (92), an avoidance groove (94), an upper magnetic pole block (95), a lower pressing block (96) and a rear magnetic pole block (97). The rotating seat (91) is arranged on the upper surface of the gun body (2). The interior of the rotating seat (91) is rotatably connected to the connecting rod (92) via a rotating shaft. The right end of the connecting rod (92) is also rotatably connected to a docking seat via a rotating shaft. The upper surface of the connecting rod (92) is provided with an avoidance groove (94). The interior of the avoidance groove (94) is provided with an upper magnetic pole block (95). The right side of the upper surface of the gun body (2) is provided with a lower pressing block (96). The middle part of the upper surface of the gun body (2) is provided with a rear magnetic pole block (97).

4. The electrostatic spraying gun structure according to claim 3, characterized in that: The cleaning mechanism (9) further comprises a wiping mechanism (93), wherein the wiping mechanism (93) comprises a connecting handle (931), a circular rotating frame (932), a rotating groove (933), a rotating disk (934), a manual rotating block (935) and a wiping towel (936), wherein the connecting handle (931) is arranged at the right end of the docking seat, a circular rotating frame (932) is arranged at the right end of the connecting handle (931), a rotating groove (933) is arranged inside the circular rotating frame (932), a rotating disk (934) is rotatably connected inside the rotating groove (933), a manual rotating block (935) is arranged at the upper end of the rotating disk (934), and a wiping towel (936) is arranged at the lower end of the rotating disk (934).

5. The electrostatic spraying gun structure according to claim 1, characterized in that: The invention also comprises an air inlet pipe (3), wherein the air inlet pipe (3) is arranged on the left side of the upper surface of the mounting plate, a feed pipe (4) is arranged on the right side of the upper surface of the mounting plate, an atomizer (6) is arranged inside the spray gun nozzle (7), the upper end of the feed pipe (4) is connected to the inlet of the atomizer (6), the upper end of the air inlet pipe (3) is connected to the air inlet of the spray gun nozzle (7), the lower end of the feed pipe (4) is externally connected to an external feed device, and the lower end of the air inlet pipe (3) is externally connected to an external air supply device.

6. The electrostatic spraying gun structure according to claim 5, characterized in that: It also includes a solenoid valve (5), which is connected in series to the upper sides of the feed pipe (4) and the air intake pipe (3), and the input end of the solenoid valve (5) is electrically connected to the output end of the control switch (81).

7. The electrostatic spraying gun structure according to claim 1, characterized in that: The invention also comprises an electrostatic connector (10), wherein the electrostatic connector (10) is arranged on the right side of the front side of the gun body (2), an electrostatic access line is plugged into the interior of the electrostatic connector (10), the rear side of the electrostatic connector (10) extends to the interior of the spray gun nozzle (7), and the other end of the electrostatic access line is externally connected to an external electrostatic generator.

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