Anti-blocking structure for electrostatic spraying gun head of powder plastic spraying plate

Abstract

The utility model relates to the technical field of powder plastic spraying, in particular to a powder plastic spraying plate electrostatic spraying gun head anti-blocking structure which comprises a spraying gun, the top of the spraying gun is fixedly connected with a material pipe, one side of the spraying gun is fixedly connected with a cleaning pipe, and the other side of the spraying gun is fixedly connected with an impurity removing pipe. A spraying nozzle is fixedly connected to the bottom of the spraying gun, a cleaning structure is arranged in the spraying gun, a filtering plate is fixedly connected to the top of the spraying nozzle, an electric heating wire is fixedly connected to the interior of the spraying gun, and an angular velocity sensor is fixedly connected to the bottom of the outer frame. The cleaning structure and the filter plate are arranged, powder coating is prevented from being adhered to the inner wall of the spray gun, meanwhile, holes in the filter plate are prevented from being blocked, the spraying quality is prevented from being influenced, the cleaning pipe, the impurity removal pipe, the electric heating wire and the angular velocity sensor are arranged, the service life of the cleaning structure and the filter plate is prolonged, and the cleaning device is convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of powder coating technology, specifically relating to an anti-clogging structure for the electrostatic spraying gun head of powder coating plate. Background Technology

[0002] An electrostatic powder coating machine is an industrial piece of equipment. It uses electrostatic control, a spray gun, and a powder supply device to coat the surface of objects. The electrostatic powder coating machine consists of a high-voltage power supply, a spray gun, nozzles, an atomizer, a powder cylinder, a controller, and an output pipe. In use, the powder coating (the coating material, commonly known as plastic powder) is first loaded into the powder cylinder. During the liquefaction process, the coating is drawn into the atomizer through the output pipe, and after atomization, it is sprayed onto the workpiece surface through the spray gun and nozzle.

[0003] Powder coatings may clump together due to factors such as moisture during transportation or pressure changes during storage. Existing electrostatic powder coating machines lack a cleaning structure in their nozzles, causing the clumped powder to easily clog the nozzles, affecting the powder coating process and leading to problems with the quality of the finished product. To address this, we propose an anti-clogging structure for the electrostatic powder coating gun nozzle of powder coating panels. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide an anti-clogging structure for the electrostatic spraying gun head of powder coating board, so as to solve the problem mentioned in the background art that powder coating will clump under the influence of factors such as moisture during transportation or pressure changes during storage. The existing electrostatic spraying machine nozzle does not have a cleaning structure, which makes it easy for clumped powder to clog the nozzle, affecting the spraying process and causing problems with the quality of the finished product.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a powder coating electrostatic spray gun head anti-clogging structure, comprising a spray gun, a material tube fixedly connected to the top of the spray gun, a solenoid valve one fixedly connected to the surface of the material tube, a cleaning tube fixedly connected to one side of the spray gun, a solenoid valve two fixedly connected to the surface of the cleaning tube, a debris removal tube fixedly connected to the other side of the spray gun, a solenoid valve three fixedly connected to the surface of the debris removal tube, a nozzle fixedly connected to the bottom of the spray gun, a cleaning structure provided inside the spray gun, the cleaning structure comprising a fixed plate, a rotating rod rotatably connected inside the fixed plate, a limit block fixedly connected to the top of the rotating rod, blades fixedly connected to the surface of the rotating rod, an outer frame fixedly connected to the surface of the blades, two sets of vertical plates fixedly connected to the bottom of the outer frame, a horizontal bar fixedly connected to the bottom of the rotating rod, cleaning brushes fixedly connected to the surfaces of the vertical plates and the horizontal bar, a filter plate fixedly connected to the top of the nozzle, a heating wire fixedly connected inside the spray gun, and an angular velocity sensor fixedly connected to the bottom of the outer frame.

[0006] Preferably, the first solenoid valve, the second solenoid valve, the third solenoid valve, the heating wire, and the angular velocity sensor are all electrically connected to an external power source.

[0007] Preferably, the cleaning structure is disposed above the filter plate, the cleaning pipe is disposed above the cleaning structure, and the impurity removal pipe is disposed between the cleaning structure and the filter plate.

[0008] Preferably, the top of the fixing plate is provided with a circular groove, the rotating rod is rotatably connected in the circular groove, the radius of the limiting block is larger than the radius of the fixing plate, and the limiting block is rotatably connected to the top of the fixing plate.

[0009] Preferably, four sets of blades are arranged around the surface of the rotating rod, the blades are inclined, and the inner surface of the outer frame is fixedly connected to the blades.

[0010] Preferably, the outer frame, the vertical plate, and the horizontal bar do not contact the inner wall of the spray gun or the surface of the filter plate; the cleaning brush on the surface of the vertical plate abuts against the inner wall of the spray gun; and the cleaning brush on the surface of the horizontal bar abuts against the surface of the filter plate.

[0011] Preferably, the two sets of vertical plates are symmetrically arranged on the left and right sides of the bottom of the outer frame, and two sets of angular velocity sensors are provided, which are symmetrically arranged at the front and rear ends of the bottom of the outer frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This anti-clogging structure for an electrostatic powder coating gun head includes a cleaning structure and a filter plate. The filter plate filters out clumped powder coating during use, preventing it from passing through and thus avoiding clogging of the nozzle. Simultaneously, when the powder coating is pumped into the spray gun by an air pump, the gas drives the blades, causing the rotating rod to rotate within a circular groove. This rotation, via the outer frame, rotates the vertical and horizontal plates, allowing the cleaning brushes on the vertical and horizontal plates to clean the inner wall of the spray gun and the surface of the filter plate. This prevents powder coating from adhering to the inner wall of the spray gun and avoids clogging of the holes in the filter plate, thus preventing any impact on the coating quality.

[0014] 2. This anti-clogging structure for the electrostatic powder coating gun head is equipped with a cleaning pipe, a cleaning pipe, a heating wire, and an angular velocity sensor. The angular velocity sensor can monitor the rotation status and speed of the cleaning structure. When the rotation speed of the cleaning structure is lower than a predetermined value, the spraying operation stops, the second solenoid valve is opened, and the cleaning fluid is poured into the spray gun through the cleaning pipe. The heating wire raises the internal temperature of the spray gun, making the powder coating easier to dissolve in the cleaning fluid, cleaning the spray gun, cleaning structure, and filter plate. The third solenoid valve is opened to discharge the cleaned liquid and impurities from the cleaning pipe, increasing the service life of the cleaning structure and filter plate, and making it more convenient to use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a front sectional view of the structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the internal structure of the spray gun of this utility model;

[0018] Figure 4 This is a cross-sectional view of the internal structure of the spray gun of this utility model;

[0019] Figure 5 This is an exploded view of the cleaning structure and filter plate of this utility model.

[0020] In the diagram: 1. Spray gun; 2. Material pipe; 21. Solenoid valve one; 3. Cleaning pipe; 31. Solenoid valve two; 4. Impurity removal pipe; 41. Solenoid valve three; 5. Nozzle; 6. Cleaning structure; 61. Fixing plate; 62. Rotating rod; 63. Limiting block; 64. Blade; 65. Outer frame; 66. Vertical plate; 67. Horizontal bar; 68. Cleaning brush; 7. Filter plate; 8. Heating wire; 9. Angular velocity sensor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 One embodiment provided by this utility model:

[0023] A clogging prevention structure for an electrostatic powder coating gun head includes a spray gun 1. A material tube 2 is fixedly connected to the top of the spray gun 1, and a solenoid valve 21 is fixedly connected to the surface of the material tube 2. A cleaning tube 3 is fixedly connected to one side of the spray gun 1, and a solenoid valve 31 is fixedly connected to the surface of the cleaning tube 3. A cleaning removal tube 4 is fixedly connected to the other side of the spray gun 1, and a solenoid valve 41 is fixedly connected to the surface of the cleaning tube 4. A nozzle 5 is fixedly connected to the bottom of the spray gun 1. A cleaning structure 6 is provided inside the spray gun 1. The cleaning structure 6 includes a fixed plate 61, and a rotating rod 62 is rotatably connected inside the fixed plate 61. The top of the rotating rod 62... A limit block 63 is fixedly connected to the main body. A blade 64 is fixedly connected to the surface of the rotating rod 62. An outer frame 65 is fixedly connected to the surface of the blade 64. Two sets of vertical plates 66 are fixedly connected to the bottom of the outer frame 65. A horizontal bar 67 is fixedly connected to the bottom of the rotating rod 62. A cleaning brush 68 is fixedly connected to the surface of the vertical plates 66 and the horizontal bar 67. A filter plate 7 is fixedly connected to the top of the nozzle 5. A heating wire 8 is fixedly connected to the inside of the spray gun 1. An angular velocity sensor 9 is fixedly connected to the bottom of the outer frame 65. The cleaning structure 6 and the filter plate 7 are set up so that the agglomerated powder coating is filtered during use. This system prevents clumped powder coating from passing through the filter plate 7, thus avoiding clogging of the nozzle 5. Simultaneously, when the powder coating is pumped into the spray gun 1 by an air pump, the gas drives the pusher blade 64, causing the rotating rod 62 to rotate within the circular groove. This rotation, via the outer frame 65, drives the vertical plate 66 and the horizontal bar 67 to rotate, allowing the cleaning brushes 68 on the vertical plate 66 and the horizontal bar 67 to clean the inner wall of the spray gun 1 and the surface of the filter plate 7. This prevents the powder coating from adhering to the inner wall of the spray gun 1 and avoids clogging of the holes in the filter plate 7, thus preventing any impact on the spraying quality. A cleaning pipe 3, a debris removal pipe 4, and an electric... The heating wire 8 and the angular velocity sensor 9 monitor the rotation status and speed of the cleaning structure 6. When the rotation speed of the cleaning structure 6 is lower than the predetermined value, the spraying operation is stopped, the solenoid valve 2 31 is opened, and the cleaning fluid is poured into the spray gun 1 through the cleaning pipe 3. The internal temperature of the spray gun 1 is raised by the heating wire 8, making the powder coating easier to dissolve in the cleaning fluid. The spray gun 1, the cleaning structure 6 and the filter plate 7 are cleaned. The solenoid valve 3 41 is opened to discharge the cleaned liquid and impurities from the impurity removal pipe 4, which increases the service life of the cleaning structure 6 and the filter plate 7 and is more convenient to use.

[0024] Furthermore, solenoid valve 21, solenoid valve 31, solenoid valve 41, heating wire 8, and angular velocity sensor 9 are all electrically connected to an external power source. The external power source supplies power to solenoid valve 21, solenoid valve 31, solenoid valve 41, heating wire 8, and angular velocity sensor 9 and performs unified control. The angular velocity sensor 9 monitors the rotation status and speed of the cleaning structure 6. The material pipe 2 is connected to the storage box and the air pump.

[0025] Furthermore, the cleaning structure 6 is positioned above the filter plate 7, the cleaning pipe 3 is positioned above the cleaning structure 6, and the impurity removal pipe 4 is positioned between the cleaning structure 6 and the filter plate 7. When the rotation speed of the cleaning structure 6 is lower than the predetermined value, the spraying operation is stopped, the solenoid valve 2 31 is opened to inject the cleaning fluid into the spray gun 1 through the cleaning pipe 3, and the internal temperature of the spray gun 1 is raised through the heating wire 8, making the powder coating easier to dissolve in the cleaning fluid, thus cleaning the spray gun 1, the cleaning structure 6, and the filter plate 7. The solenoid valve 3 41 is opened to discharge the cleaned liquid and impurities from the impurity removal pipe 4.

[0026] Furthermore, a circular groove is provided on the top of the fixed plate 61, and the rotating rod 62 is rotatably connected in the circular groove. The radius of the limiting block 63 is larger than the radius of the fixed plate 61. The limiting block 63 is rotatably connected to the top of the fixed plate 61. When the powder coating is pumped into the spray gun 1 by the air pump, the gas drives the pusher blade 64, causing the rotating rod 62 to rotate in the circular groove. The limiting block 63 limits the rotating rod 62 to prevent it from sliding out of the circular groove.

[0027] Furthermore, four sets of blades 64 are arranged on the circumference of the rotating rod 62. The blades 64 are inclined so that when the powder coating is pumped into the spray gun 1 by the air pump, the gas can drive and push the blades 64. The inner surface of the outer frame 65 is fixedly connected to the blades 64, and the overall strength of the blades 64 is strengthened by the outer frame 65.

[0028] Furthermore, the outer frame 65, vertical plate 66, and horizontal bar 67 do not contact the inner wall of the spray gun 1 or the surface of the filter plate 7. The cleaning brush 68 on the surface of the vertical plate 66 abuts against the inner wall of the spray gun 1, and the cleaning brush 68 on the surface of the horizontal bar 67 abuts against the surface of the filter plate 7. The rotating rod 62 rotates in the circular groove, driving the vertical plate 66 and horizontal bar 67 to rotate through the outer frame 65, so that the cleaning brush 68 on the vertical plate 66 and horizontal bar 67 cleans the inner wall of the spray gun 1 and the surface of the filter plate 7, preventing the powder coating from sticking to the inner wall of the spray gun 1, and at the same time avoiding the clogging of the holes on the filter plate 7.

[0029] Furthermore, two sets of vertical plates 66 are symmetrically arranged on the left and right sides of the bottom of the outer frame 65. Two sets of angular velocity sensors 9 are provided, and the two sets of angular velocity sensors 9 are symmetrically arranged at the front and rear ends of the bottom of the outer frame 65. The symmetrical design makes the overall force uniform when the cleaning structure 6 rotates, increasing the stability of the cleaning structure 6 when rotating.

[0030] Working principle: During use, opening solenoid valve 21 pumps powder coating into spray gun 1 via an air pump. The powder coating, if clumped, is filtered through filter plate 7, preventing it from passing through and clogging nozzle 5. The filtered powder coating is then sprayed from nozzle 5. Simultaneously, the air drives blade 64, causing rotating rod 62 to rotate within the circular groove. This rotation, via outer frame 65, rotates vertical plate 66 and horizontal bar 67, allowing cleaning brushes 68 on these surfaces to clean the inner wall of spray gun 1 and the surface of filter plate 7, preventing powder coating from adhering to the inner wall of spray gun 1. To prevent the holes on the filter plate 7 from becoming clogged, powder coating will adhere to the inner wall of the spray gun 1 and the surface of the cleaning structure 6 after prolonged use, which will affect the rotation of the cleaning structure 6. The rotation status and speed of the cleaning structure 6 can be monitored by the angular velocity sensor 9. When the rotation speed of the cleaning structure 6 is lower than the predetermined value, the spraying operation is stopped, the solenoid valve 2 31 is opened to pour the cleaning fluid into the spray gun 1 through the cleaning pipe 3, and the internal temperature of the spray gun 1 is raised by the heating wire 8, so that the powder coating is more easily dissolved in the cleaning fluid, and the spray gun 1, the cleaning structure 6 and the filter plate 7 are cleaned. The solenoid valve 3 41 is opened to discharge the cleaned liquid and impurities from the impurity removal pipe 4.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A structure for preventing clogging of an electrostatic powder coating gun head, comprising a spray gun (1), characterized in that: A material pipe (2) is fixedly connected to the top of the spray gun (1), and a solenoid valve (21) is fixedly connected to the surface of the material pipe (2). A cleaning pipe (3) is fixedly connected to one side of the spray gun (1), and a solenoid valve (31) is fixedly connected to the surface of the cleaning pipe (3). A cleaning pipe (4) is fixedly connected to the other side of the spray gun (1), and a solenoid valve (41) is fixedly connected to the surface of the cleaning pipe (4). A nozzle (5) is fixedly connected to the bottom of the spray gun (1). A cleaning structure (6) is provided inside the spray gun (1). The cleaning structure (6) includes a fixed plate (61), and a rotating rod (62) is rotatably connected inside the fixed plate (61). A limit block (63) is fixedly connected to the top of the rotating rod (62), a blade (64) is fixedly connected to the surface of the rotating rod (62), an outer frame (65) is fixedly connected to the surface of the blade (64), two sets of vertical plates (66) are fixedly connected to the bottom of the outer frame (65), a horizontal bar (67) is fixedly connected to the bottom of the rotating rod (62), a cleaning brush (68) is fixedly connected to the surface of the vertical plate (66) and the horizontal bar (67), a filter plate (7) is fixedly connected to the top of the nozzle (5), an electric heating wire (8) is fixedly connected to the inside of the spray gun (1), and an angular velocity sensor (9) is fixedly connected to the bottom of the outer frame (65).

2. The anti-clogging structure for electrostatic powder coating gun head of a powder coating plate according to claim 1, characterized in that: The solenoid valve one (21), the solenoid valve two (31), the solenoid valve three (41), the heating wire (8), and the angular velocity sensor (9) are all electrically connected to an external power source.

3. The anti-clogging structure for electrostatic powder coating gun head of a powder coating plate according to claim 1, characterized in that: The cleaning structure (6) is disposed above the filter plate (7), the cleaning pipe (3) is disposed above the cleaning structure (6), and the impurity removal pipe (4) is disposed between the cleaning structure (6) and the filter plate (7).

4. The anti-clogging structure for electrostatic powder coating gun head of a powder coating plate according to claim 1, characterized in that: The top of the fixing plate (61) is provided with a circular groove, the rotating rod (62) is rotatably connected in the circular groove, the radius of the limiting block (63) is larger than the radius of the fixing plate (61), and the limiting block (63) is rotatably connected to the top of the fixing plate (61).

5. The anti-clogging structure for electrostatic powder coating gun head of a powder coating plate according to claim 1, characterized in that: The blades (64) are arranged in four sets around the surface of the rotating rod (62). The blades (64) are inclined and the inner surface of the outer frame (65) is fixedly connected to the blades (64).

6. The anti-clogging structure for electrostatic powder coating gun head of a powder-coated plate according to claim 1, characterized in that: The outer frame (65), the vertical plate (66), and the horizontal bar (67) do not contact the inner wall of the spray gun (1) and the surface of the filter plate (7). The cleaning brush (68) on the surface of the vertical plate (66) abuts against the inner wall of the spray gun (1), and the cleaning brush (68) on the surface of the horizontal bar (67) abuts against the surface of the filter plate (7).

7. The anti-clogging structure for electrostatic powder coating gun head of a powder-coated plate according to claim 1, characterized in that: Two sets of vertical plates (66) are symmetrically arranged on the left and right sides of the bottom of the outer frame (65). Two sets of angular velocity sensors (9) are provided, and the two sets of angular velocity sensors (9) are symmetrically arranged at the front and rear ends of the bottom of the outer frame (65).

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