Powder spraying device capable of achieving uniform spraying

Abstract

The utility model relates to the technical field of spraying devices, and discloses a powder spraying device capable of spraying uniformly, which comprises a spraying barrel, a motor, a feeding pipe, a spraying pipe, a rotating shaft and the like, a swash plate is fixedly sleeved on the outer surface of the rotating shaft positioned in an inner cavity of the spraying barrel, and a piston plate is movably sleeved on the outer surface of the rotating shaft positioned on the lower side of the swash plate. And the top surface of the piston plate is fixedly connected with an ejector rod. In the powder spraying machining process, the motor is used for driving the rotating shaft to rotate, so that the rotating shaft drives the swash plate to rotate, when the lowest part of the swash plate is in contact with the ejector rod, the ejector rod drives the piston plate to move downwards, and when the lowest part of the swash plate leaves the ejector rod, the piston plate moves upwards under the potential energy effect of the spring; the powder on the lower side of the piston plate can be dispersed under the action of air pressure, at the moment, the dispersed powder cannot be raised through blocking of the piston plate, the powder uniformity is improved, and meanwhile powder raising is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying devices, in particular to a powder spraying device with uniform spraying. Background Art

[0002] Powder spraying is the process of spraying powder coating onto the surface of a workpiece using a powder spraying device, and utilizing the effect of static electricity to cause the powder to be evenly adsorbed on the workpiece to form a powder coating, which is then leveled and solidified at high temperature to form the final coating. In the spraying device, compressed air is mainly used to cause the powder to be in a fluidized state, and the fluidized powder is sprayed onto the surface of the workpiece through a spray tube and a spray gun.

[0003] During use, in order to ensure the uniformity of the powder, the existing powder spraying device often uses a motor to drive the rotating shaft and the stirring rod to stir the fluidized powder. Although this stirring method can ensure the uniformity of the powder, it will also cause the powder to be lifted, affecting the adsorption of the powder by the spray pipe, so that the powder still remains uneven after entering the spray pipe, and the powder is easily accumulated near the suction hole, causing the suction hole to be blocked. Utility Model Content

[0004] In view of the shortcomings of existing spraying devices, the utility model provides a powder spraying device with uniform spraying, which has the advantages of ensuring uniform distribution of powder inside the spray barrel while preventing powder from being lifted up, improving the spraying effect, and effectively preventing the suction hole from being clogged, thus solving technical problems such as uneven powder distribution and clogged suction holes.

[0005] The utility model provides the following technical solution: a powder spraying device for uniform spraying, comprising a spraying barrel, and also comprising:

[0006] The motor is fixedly mounted on the middle of the top surface of the spray barrel, the top surface of the spray barrel is located on the left side of the motor and a feed pipe is fixedly arranged thereon, and the top surface of the spray barrel is located on the right side of the motor and a spray pipe is fixedly arranged thereon;

[0007] The rotating shaft is fixedly connected to the output end of the motor, a suction hole 6 is opened on the side wall of the bottom end of the spray pipe, and the bottom end of the spray pipe is fixedly connected to the bottom surface of the inner cavity of the spray barrel.

[0008] Preferably, the rotating shaft includes:

[0009] A slant plate, fixedly sleeved on the outer surface of the rotating shaft located in the inner cavity of the spray barrel;

[0010] A piston plate, movably sleeved on the outer surface of the rotating shaft and located at the lower side of the swash plate;

[0011] The bottom end of the feed pipe passes through the piston plate and is located at the lower side of the piston plate.

[0012] Preferably, the piston plate comprises:

[0013] A push rod, fixedly connected to the top surface of the piston plate;

[0014] The top surface of the push rod is an inclined surface, and the inclination of the top surface of the push rod is equal to the inclination of the bottom surface of the swash plate.

[0015] Preferably, the piston plate further comprises:

[0016] A spring is fixedly connected to the middle part of the bottom surface of the piston plate, and the bottom end of the spring is fixedly connected to the middle part of the bottom surface of the inner cavity of the spray barrel.

[0017] Preferably, the piston plate further comprises:

[0018] The rubber strip is fixedly connected to the bottom surface of the piston plate. The piston plate is movably sleeved on the outer surface of the spray pipe. The rubber strip is movably sleeved on the outer side of the spray pipe.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. By designing the swash plate, piston plate, push rod and spring, when the spray barrel is normally spraying powder on the workpiece, the motor is used to drive the shaft to rotate, so that the shaft drives the swash plate to rotate. When the lowest part of the swash plate contacts the push rod, the push rod will drive the piston plate to move downward. When the lowest part of the swash plate leaves the push rod, the piston plate will move upward due to the potential energy of the spring. Due to the continuous up and down movement of the piston plate, the powder on the lower side of the piston plate will be scattered by the air pressure. At this time, the piston plate is used to block the scattered powder so that it will not be lifted up, thereby improving the uniformity of the powder and preventing the powder from being lifted up.

[0021] 2. By designing the rubber strip, when the piston plate is pushed down by the push rod, the piston plate will drive the rubber strip to move down, so that the rubber strip will contact the bottom surface of the inner cavity of the spray barrel, causing the rubber strip to deform, and then the deformed rubber strip will be used to break up the powder accumulated near the suction hole, avoiding the accumulation of powder near the suction hole and causing the suction hole to be blocked, thereby improving the spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the spray barrel of the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the spray barrel of the utility model;

[0024] Figure 3 This is a schematic diagram of the matching structure of the swash plate and the piston plate of the utility model.

[0025] In the figure: 1. spray barrel; 2. motor; 3. feed pipe; 4. spray pipe; 5. rotating shaft; 51. inclined plate; 52. piston plate; 53. push rod; 54. spring; 55. rubber strip; 6. suction hole. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-Figure 3 A powder spraying device with uniform spraying comprises a spray barrel 1, a motor 2 is fixedly installed in the middle of the top surface of the spray barrel 1, a feeding pipe 3 is fixedly arranged on the top surface of the spray barrel 1 located on the left side of the motor 2, and is used to introduce powder into the interior of the spray barrel 1, a spray pipe 4 is fixedly arranged on the top surface of the spray barrel 1 located on the right side of the motor 2, and the spray pipe 4 is used to connect a spray gun to ensure that the powder inside the spray barrel 1 can be evenly sprayed on the 2 outer surfaces of the workpiece, a rotating shaft 5 is fixedly welded on the output end of the motor 2, a suction hole 6 is opened on the side wall of the bottom end of the spray pipe 4, and the bottom end of the spray pipe 4 is fixedly connected to the bottom surface of the inner cavity of the spray barrel 1.

[0028] See also Figure 1-Figure 3 The rotating shaft 5 is located on the outer surface of the inner cavity of the spray barrel 1 and a swash plate 51 is fixedly sleeved thereon to ensure that the swash plate 51 is driven to rotate when the rotating shaft 5 rotates.

[0029] The outer surface of the rotating shaft 5 is located at the lower side of the swash plate 51 and is movably sleeved with a piston plate 52 to prevent the rotating shaft 5 from driving the piston plate 52 to rotate.

[0030] The bottom end of the feed pipe 3 passes through the piston plate 52 and is located at the lower side of the piston plate 52 , ensuring that the powder is located at the lower side of the piston plate 52 after entering the spray barrel 1 .

[0031] See also Figure 1-Figure 3 A push rod 53 is fixedly welded to the top surface of the piston plate 52 .

[0032] The top surface of the push rod 53 is an inclined surface, and the inclination of the top surface of the push rod 53 is equal to the inclination of the bottom surface of the swash plate 51, ensuring that when the swash plate 51 rotates, the inclined surface at the top of the push rod 53 cooperates with the inclined surface of the bottom surface of the swash plate 51 to prompt the push rod 53 to move downward, and the push rod 53 is used to push the piston plate 52 to move downward.

[0033] See also Figure 1-Figure 3A spring 54 is fixedly welded to the middle of the bottom surface of the piston plate 52, and the bottom end of the spring 54 is fixedly welded to the middle of the bottom surface of the inner cavity of the spray barrel 1. The design of the spring 54 ensures that the piston plate 52 can be moved up and reset by utilizing the potential energy of the spring 54 after moving downward.

[0034] See also Figure 1-Figure 3 The piston plate 52 is movably sleeved on the outer surface of the spray pipe 4. The bottom surface of the piston plate 52 is located on the outside of the spray pipe 4 and is fixedly connected with a rubber strip 55. The deformation of the rubber strip 55 causes the powder accumulated near the suction hole 6 to be broken up, effectively preventing the suction hole 6 from being blocked by powder.

[0035] Working principle: When the workpiece needs to be powder-coated, the powder is introduced into the interior of the spray barrel 1 through the feed pipe 3, and then the spray pipe 4 is connected to the spray gun, and then the motor 2 is turned on, the motor 2 drives the rotating shaft 5 to rotate, and the rotating shaft 5 drives the swash plate 51 to rotate. As the swash plate 51 rotates, when the lowest part of the swash plate 51 contacts the push rod 53, the swash plate 51 will apply a downward pressure to the push rod 53, so that the push rod 53 pushes the piston plate 52 downward. When the lowest part of the swash plate 51 leaves the push rod 53, the piston plate 52 will move upward due to the potential energy of the spring 54, so that during the entire spraying process, the piston plate 52 will reciprocate up and down inside the spray barrel 1 As the piston plate 52 moves up and down, the air pressure on the lower side of the piston plate 52 changes continuously, thereby utilizing the change in air pressure to improve the uniformity of the powder and disperse the powder. At the same time, due to the obstruction of the piston plate 52, the dispersed powder will not be lifted up. Secondly, in the process of the piston plate 52 moving downward, the piston plate 52 will drive the rubber strip 55 to move downward, so that the rubber strip 55 contacts the bottom of the inner cavity of the spray barrel 1, thereby causing the rubber strip 55 to deform. Due to the deformation of the rubber strip 55, the powder accumulated near the suction hole 6 will be dispersed by the deformed rubber strip 55, effectively preventing the powder from accumulating near the suction hole 6 and causing the suction hole 6 to be blocked, thereby improving the spraying effect.

Claims

1. A powder spraying device for uniform spraying, comprising a spraying barrel (1), characterized in that: Also includes: The motor (2) is fixedly mounted on the middle of the top surface of the spray barrel (1); a feed pipe (3) is fixedly arranged on the top surface of the spray barrel (1) located on the left side of the motor (2); and a spray pipe (4) is fixedly arranged on the top surface of the spray barrel (1) located on the right side of the motor (2); The rotating shaft (5) is fixedly connected to the output end of the motor (2); a suction hole (6) is provided on the side wall of the bottom end of the spray pipe (4); and the bottom end of the spray pipe (4) is fixedly connected to the bottom surface of the inner cavity of the spray barrel (1).

2. A powder spraying device with uniform spraying according to claim 1, characterized in that: The rotating shaft (5) comprises: A swash plate (51) is fixedly sleeved on the outer surface of the rotating shaft (5) located in the inner cavity of the spray barrel (1); A piston plate (52) movably sleeved on the outer surface of the rotating shaft (5) and located on the lower side of the swash plate (51); The bottom end of the feed pipe (3) passes through the piston plate (52) and is located on the lower side of the piston plate (52).

3. A powder spraying device with uniform spraying according to claim 2, characterized in that: The piston plate (52) comprises: A push rod (53) fixedly connected to the top surface of the piston plate (52); The top surface of the push rod (53) is an inclined surface, and the inclination of the top surface of the push rod (53) is equal to the inclination of the bottom surface of the swash plate (51).

4. A powder spraying device for uniform spraying according to claim 3, characterized in that: The piston plate (52) also includes: The spring (54) is fixedly connected to the middle part of the bottom surface of the piston plate (52), and the bottom end of the spring (54) is fixedly connected to the middle part of the bottom surface of the inner cavity of the spray barrel (1).

5. A powder spraying device for uniform spraying according to claim 4, characterized in that: The piston plate (52) also includes: The rubber strip (55) is fixedly connected to the bottom surface of the piston plate (52), the piston plate (52) is movably sleeved on the outer surface of the spray pipe (4), and the rubber strip (55) is movably sleeved on the outer side of the spray pipe (4).

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