Protective coating spraying gun

Abstract

The utility model relates to the technical field of spraying guns, and provides a protective coating spraying gun which comprises a cylinder body, the inlet end of the cylinder body is fixedly connected with a feeding pipe, the outlet end of the cylinder body is fixedly connected with a discharging pipe, the feeding pipe is fixedly connected with a feeding one-way valve, and the discharging pipe is fixedly connected with a discharging one-way valve. A nozzle is fixedly connected to the outlet end of the discharging pipe, a piston is slidably connected to the inner side of the barrel, a sealing ring penetrating through the piston is rotatably connected to the center of the piston, a movable rod penetrating through the sealing ring is fixedly connected to the center of the sealing ring, and a plurality of stirring rods are fixedly connected to one end of the movable rod; the other end of the movable rod penetrates through the side wall of the barrel and extends to the outer side of the barrel, and a manual mechanism for driving the movable rod to reciprocate in the length direction of the barrel through manual operation is arranged at the bottom of the barrel. The stirring rod can smash caked coating, so that the sprayed coating can be uniformly sprayed out.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying guns, and specifically, to a spraying gun for a protective coating. Background Art

[0002] The powder coating layer is a solid powder synthetic resin coating composed of solid resin, pigments, fillers, and additives, etc., and has the characteristics of no solvent pollution and low energy consumption. Since its advent, powder spraying has always been an important means of surface treatment and has been widely used. Among them, a spraying gun is required when spraying the coating.

[0003] After retrieval, the "spraying gun for nickel-based alloy powder coating" disclosed in the Chinese patent publication number CN211099665U includes a gun body. A powder inlet is provided at the upper end of the gun body, a powder tank is provided at the upper end of the powder inlet, a conduit is provided at the left end of the gun body, a spray head is provided at the left end of the conduit, and the spray head is composed of a left baffle, a right baffle, and a rotating shaft. The left baffle and the right baffle are sleeved on the rotating shaft and are movably connected to the rotating shaft. Chutes are provided at the upper and lower ends of the opposite sides of the left baffle and the right baffle, steel balls are provided in the chutes, through holes a and b are provided on the left baffle, through hole c is provided on the right baffle, the radius of through hole c is larger than the radii of through holes a and b, and the radius of through hole b is larger than the radius of through hole a.

[0004] The above patent loads nickel-based alloy powder through a powder tank, and then the powder enters the gun body. By rotating the left baffle to align through hole a with through hole c on the right baffle, small nickel-based alloy powder is ejected from the gun body. However, since the coating material is in powder form, it is very easy to agglomerate after being introduced into the inside of the spraying gun and extruded, which makes the sprayed powder uneven and thus affects the quality of the coating. In view of this, the utility model proposes a spraying gun for a protective coating. Summary of the Utility Model

[0005] The utility model proposes a spraying gun for a protective coating, which solves the problem that the powder coating is prone to agglomeration in the prior art.

[0006] The technical solution of the present utility model is as follows: A protective coating spraying gun, including a cylinder body, an inlet end of the cylinder body is fixedly connected with a feed pipe, an outlet end of the cylinder body is fixedly connected with a discharge pipe, a feed check valve is fixedly connected to the feed pipe, a discharge check valve is fixedly connected to the discharge pipe, an outlet end of the discharge pipe is fixedly connected with a nozzle, a piston is slidably connected inside the cylinder body, a sealing ring penetrating the piston is rotatably connected at a central position of the piston, a movable rod penetrating the sealing ring is fixedly connected at a central position of the sealing ring, one end of the movable rod is fixedly connected with a plurality of stirring rods, the plurality of stirring rods are distributed at equal angles around the movable rod, the other end of the movable rod penetrates through a side wall of the cylinder body and extends to the outside of the cylinder body, and a manual mechanism for driving the movable rod to reciprocate along the length direction of the cylinder body by manual operation is arranged at the bottom of the cylinder body.

[0007] Preferably, an inlet end of the feed pipe is fixedly connected with a paint storage tank, and an outlet end of the paint storage tank is fixedly connected with a corresponding control valve.

[0008] Preferably, a through groove concentric with the movable rod is formed in a side wall of the cylinder body, and a diameter of the movable rod is smaller than an opening diameter of the through groove.

[0009] Preferably, the manual mechanism includes a mounting frame, a guiding seat is rotatably connected to a top end of the mounting frame, the movable rod penetrates through the guiding seat and is fixedly connected with the guiding seat, a fixing plate is fixedly connected to a bottom of the cylinder body, a sliding rod penetrating through the fixing plate is rotatably connected to a middle of the fixing plate, one end of the sliding rod is fixedly connected with the mounting frame, and a pressing member for driving the sliding rod to reciprocate is arranged at the other end of the sliding rod, and a transmission member for driving the movable rod to rotate by cooperating with a translation of the mounting frame is arranged at one end of a top of the mounting frame.

[0010] Preferably, the pressing member includes a pressing rod, a top end of the pressing rod is hinged to a bottom of the cylinder body, a connecting rod is hinged to a middle of the pressing rod, a connecting seat is hinged to a bottom end of the connecting rod, and one side of the connecting seat is fixedly connected with the sliding rod.

[0011] Preferably, the pressing member further includes a return spring sleeved on the sliding rod, one end of the return spring abuts against the connecting seat, and the other end of the return spring abuts against the fixing plate.

[0012] Preferably, the transmission member includes a first bevel gear fixedly connected to one end of the movable rod, a second bevel gear meshing with the first bevel gear is rotatably connected to a top end of the mounting frame, a rolling gear is coaxially fixedly connected to one side of the second bevel gear, and a toothed plate meshing with the rolling gear is fixedly connected to the outside of the cylinder body.

[0013] Preferably, the toothed plate is arranged parallel to the movable rod, and a length of the toothed plate is the same as a length of the sliding rod.

[0014] The working principle and beneficial effects of the present utility model are as follows: By driving the sliding rod to reciprocate through the pressing member, the mounting frame drives the movable rod to reciprocate along the length direction of the cylinder body, and thus the piston reciprocates inside the cylinder body. When the piston approaches the discharge pipe, the pressure inside the cylinder body increases, causing the paint inside the cylinder body to be discharged from the discharge pipe and then sprayed through the nozzle; when the piston moves away from the discharge pipe, the pressure inside the cylinder body decreases, causing the feed pipe to introduce the paint from the paint storage tank into the cylinder body. In this way, the cycle is repeated, and the nozzle can intermittently apply paint to the workpiece. At the same time, the transmission member drives the movable rod to rotate, causing all the stirring rods to rotate circumferentially, so that the stirring rods can stir the powder paint, break up the agglomerated paint, and thus make the sprayed paint be evenly sprayed, improving the quality of the coating. Description of the Drawings

[0015] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0016] Figure 1 It is a schematic structural view of a coating spraying gun for the present utility model;

[0017] Figure 2 It is a schematic internal structure view of the cylinder body of the present utility model;

[0018] Figure 3 It is a schematic structural view of the manual mechanism of the present utility model;

[0019] Figure 4 It is a schematic structural view of the pressing member of the present utility model;

[0020] Figure 5 It is a schematic structural view of the transmission member of the present utility model.

[0021] In the figure: 1. Cylinder body; 2. Feed pipe; 3. Paint storage tank; 4. Feed check valve; 5. Discharge pipe; 6. Nozzle; 7. Discharge check valve; 8. Piston; 9. Movable rod; 10. Sealing ring; 11. Stirring rod; 12. Manual mechanism; 121. Mounting frame; 122. Guide seat; 123. Fixed plate; 124. Sliding rod; 125. Pressing member; 1251. Pressing rod; 1252. Connecting rod; 1253. Connecting seat; 1254. Return spring; 126. Transmission member; 1261. First bevel gear; 1262. Second bevel gear; 1263. Rolling gear; 1264. Rack; 13. Through groove. Specific Embodiments

[0022] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0023] As Figures 1 to 5 shown, this embodiment proposes a protective coating spraying gun, including a cylinder body 1. A feed pipe 2 is fixedly connected to the inlet end of the cylinder body 1. A discharge pipe 5 is fixedly connected to the outlet end of the cylinder body 1. A feed check valve 4 is fixedly connected to the feed pipe 2. A paint storage tank 3 is fixedly connected to the inlet end of the feed pipe 2. A corresponding control valve is fixedly connected to the outlet end of the paint storage tank 3. A discharge check valve 7 is fixedly connected to the discharge pipe 5. A nozzle 6 is fixedly connected to the outlet end of the discharge pipe 5. A piston 8 is slidably connected inside the cylinder body 1. A sealing ring 10 penetrating the piston 8 is rotatably connected to the central position of the piston 8. A movable rod 9 penetrating the sealing ring 10 is fixedly connected to the central position of the sealing ring 10. One end of the movable rod 9 is fixedly connected with a plurality of stirring rods 11. The plurality of stirring rods 11 are distributed at equal angles around the movable rod 9. The other end of the movable rod 9 penetrates the side wall of the cylinder body 1 and extends to the outside of the cylinder body 1. A through groove 13 concentric with the movable rod 9 is provided on the side wall of the cylinder body 1. The diameter of the movable rod 9 is smaller than the opening diameter of the through groove 13. A manual mechanism 12 for driving the movable rod 9 to reciprocate along the length direction of the cylinder body 1 by manual operation is provided at the bottom of the cylinder body 1.

[0024] By driving the movable rod 9 to reciprocate along the length direction of the cylinder body 1 through the manual mechanism 12, the piston 8 reciprocates inside the cylinder body 1. When the piston 8 approaches the discharge pipe 5, the pressure inside the cylinder body 1 increases, so that the paint inside the cylinder body 1 is discharged from the discharge pipe 5 and then sprayed out through the nozzle 6. When the piston 8 moves away from the discharge pipe 5, the pressure inside the cylinder body 1 decreases, so that the feed pipe 2 introduces the paint inside the paint storage tank 3 into the cylinder body 1. In this way, the nozzle 6 can intermittently apply the paint to the workpiece. This process does not require external power drive, reducing the use cost.

[0025] Furthermore, the manual mechanism 12 includes a mounting frame 121. A guide seat 122 is rotatably connected to the top end of the mounting frame 121. The movable rod 9 passes through the guide seat 122 and is fixedly connected to the guide seat 122. A fixed plate 123 is fixedly connected to the bottom of the cylinder body 1. A slide rod 124 passing through the fixed plate 123 is rotatably connected to the middle of the fixed plate 123. One end of the slide rod 124 is fixedly connected to the mounting frame 121. A pressing member 125 for driving the slide rod 124 to slide reciprocally is arranged at the other end of the slide rod 124. A transmission member 126 for driving the movable rod 9 to rotate by matching with the translation of the mounting frame 121 is arranged at one end of the top of the mounting frame 121.

[0026] The pressing member 125 drives the slide rod 124 to slide reciprocally, which makes the mounting frame 121 drive the movable rod 9 to reciprocate along the length direction of the cylinder body 1, and also makes the piston 8 slide reciprocally inside the cylinder body 1. When the piston 8 approaches the discharge pipe 5, the pressure inside the cylinder body 1 increases, which makes the paint inside the cylinder body 1 be discharged from the discharge pipe 5 and then sprayed out through the nozzle 6. When the piston 8 moves away from the discharge pipe 5, the pressure inside the cylinder body 1 decreases, which makes the feed pipe 2 introduce the paint inside the paint storage tank 3 into the cylinder body 1. In this way, the nozzle 6 can intermittently apply paint to the workpiece. At the same time, the transmission member 126 drives the movable rod 9 to rotate, so that all the stirring rods 11 rotate circumferentially, so that the stirring rods 11 can stir the powder paint, which can break up the caked paint, and then make the sprayed paint be sprayed evenly, thus improving the quality of the coating.

[0027] Furthermore, the pressing member 125 includes a pressure rod 1251. The top end of the pressure rod 1251 is hinged to the bottom of the cylinder body 1. A connecting rod 1252 is hinged to the middle of the pressure rod 1251. The bottom end of the connecting rod 1252 is hinged to a connecting seat 1253. One side of the connecting seat 1253 is fixedly connected to the slide rod 124. A return spring 1254 is sleeved on the slide rod 124. One end of the return spring 1254 abuts against the connecting seat 1253, and the other end of the return spring 1254 abuts against the fixed plate 123. By pressing the pressure rod 1251 to make it rotate, the pressure rod 1251 applies a thrust to the connecting rod 1252, making the connecting rod 1252 drive the slide rod 124 to slide. At this time, the return spring 1254 is compressed to store potential energy. Then release the pressure rod 1251. At this time, the return spring 1254 releases the potential energy, which also makes the slide rod 124 slide in the reverse direction. Therefore, by repeatedly pressing the pressure rod 1251, the slide rod 124 can slide reciprocally, which makes the mounting frame 121 drive the movable rod 9 to reciprocate along the length direction of the cylinder body 1, and also makes the piston 8 slide reciprocally inside the cylinder body 1, so that the nozzle 6 can intermittently apply paint to the workpiece.

[0028] Further, the transmission member 126 includes a first bevel gear 1261. The first bevel gear 1261 is fixedly connected to one end of the movable rod 9. The top end of the mounting frame 121 is rotatably connected to a second bevel gear 1262 that meshes with the first bevel gear 1261. One side of the second bevel gear 1262 is coaxially and fixedly connected with a rolling gear 1263. The outside of the cylinder body 1 is fixedly connected with a toothed plate 1264 that meshes with the rolling gear 1263. The toothed plate 1264 is arranged parallel to the movable rod 9, and the length of the toothed plate 1264 is the same as the length of the sliding rod 124. During the translation process of the mounting frame 121, the rolling gear 1263 will roll along the toothed plate 1264, which causes the second bevel gear 1262 to rotate, and thus causes the first bevel gear 1261 to rotate, thereby causing the movable rod 9 to rotate. In this way, all the stirring rods 11 perform circumferential rotation, so that the stirring rods 11 can stir the powder coating, break up the agglomerated coating, and further make the sprayed coating be evenly sprayed, thereby improving the quality of the coating.

[0029] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective coating spraying gun, comprising a cylinder body (1), an inlet pipe (2) is fixedly connected to the inlet end of the cylinder body (1), an outlet pipe (5) is fixedly connected to the outlet end of the cylinder body (1), a feed check valve (4) is fixedly connected to the inlet pipe (2), a discharge check valve (7) is fixedly connected to the outlet pipe (5), and a nozzle (6) is fixedly connected to the outlet end of the outlet pipe (5), characterized in that, A piston (8) is slidably connected to the inner side of the cylinder body (1). A sealing ring (10) passing through the piston (8) is rotatably connected to the central position of the piston (8). A movable rod (9) passing through the sealing ring (10) is fixedly connected to the central position of the sealing ring (10). One end of the movable rod (9) is fixedly connected with a plurality of stirring rods (11). The plurality of stirring rods (11) are distributed at equal angles around the movable rod (9). The other end of the movable rod (9) passes through the side wall of the cylinder body (1) and extends to the outside of the cylinder body (1). A manual mechanism (12) for driving the movable rod (9) to reciprocate along the length direction of the cylinder body (1) by manual operation is arranged at the bottom of the cylinder body (1).

2. The spray gun for a protective coating according to claim 1, characterized in that, The inlet end of the feed pipe (2) is fixedly connected with a paint storage tank (3), and the outlet end of the paint storage tank (3) is fixedly connected with a corresponding control valve.

3. The spray gun for a protective coating according to claim 1, characterized in that, A through groove (13) concentric with the movable rod (9) is formed in the side wall of the cylinder body (1), and the diameter of the movable rod (9) is smaller than the opening diameter of the through groove (13).

4. A protective coating spraying gun according to claim 1, characterized in that, The manual mechanism (12) includes a mounting frame (121). A guide seat (122) is rotatably connected to the top end of the mounting frame (121). The movable rod (9) passes through the guide seat (122) and is fixedly connected with the guide seat (122). A fixing plate (123) is fixedly connected to the bottom of the cylinder body (1). A sliding rod (124) passing through the fixing plate (123) is rotatably connected to the middle of the fixing plate (123). One end of the sliding rod (124) is fixedly connected with the mounting frame (121). A pressing member (125) for driving the sliding rod (124) to reciprocate is arranged at the other end of the sliding rod (124). A transmission member (126) for driving the movable rod (9) to rotate by matching with the translation of the mounting frame (121) is arranged at one end of the top of the mounting frame (121).

5. The spray gun for a protective coating according to claim 4, characterized in that, The pressing member (125) includes a pressing rod (1251). The top end of the pressing rod (1251) is hinged to the bottom of the cylinder body (1). A connecting rod (1252) is hinged to the middle of the pressing rod (1251). A connecting seat (1253) is hinged to the bottom end of the connecting rod (1252). One side of the connecting seat (1253) is fixedly connected with the sliding rod (124).

6. The spray gun for a protective coating according to claim 5, characterized in that, The pressing member (125) further includes a return spring (1254) sleeved on the sliding rod (124). One end of the return spring (1254) abuts against the connecting seat (1253), and the other end of the return spring (1254) abuts against the fixing plate (123).

7. A protective coating spraying gun according to claim 4, characterized in that, The transmission member (126) includes a first bevel gear (1261). The first bevel gear (1261) is fixedly connected to one end of the movable rod (9). A second bevel gear (1262) meshing with the first bevel gear (1261) is rotatably connected to the top end of the mounting frame (121). A rolling gear (1263) is coaxially fixedly connected to one side of the second bevel gear (1262). A toothed plate (1264) meshing with the rolling gear (1263) is fixedly connected to the outside of the cylinder body (1).

8. A protective coating spraying gun according to claim 7, characterized in that, The toothed plate (1264) is arranged parallel to the movable rod (9), and the length of the toothed plate (1264) is the same as the length of the sliding rod (124).

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