A high-pressure air flow duster

Abstract

The utility model discloses a high pressure airflow powder spraying machine relates to powder spraying machine technical field. This high pressure airflow powder spraying machine includes dry powder storage tank and seal cover, and the bottom of dry powder storage tank is provided with the discharge pipe, and the bottom end transverse of discharge pipe is provided with the feed pipe that links with dry powder storage tank, and one end of feed pipe is provided with high pressure fan, and the other end is provided with connecting hose and spray gun in proper order, and the bottom wall of feed pipe is provided with the powder feeding component that penetrates feed pipe and extends to the inside of discharge pipe lengthwise, and the top of powder feeding component is provided with stirring subassembly, and the fixed setting of feed pipe is provided with the air inlet pipe that links with dry powder storage tank, the setting of high pressure centrifugal fan improves the pressure of airflow, and respectively solves the problem that the spraying efficiency is low, and spraying is uneven and the problem that the scope of application is small, the setting of powder feeding component can accurate control the size of the powder output, can satisfy the demand of customer, the setting of stirring subassembly can avoid the phenomenon of plugging pipeline because of powder damp lumping, improves the powder delivery smoothness.

Description

Technical Field

[0001] This utility model relates to the field of powder spraying machine technology, specifically a high-pressure airflow powder spraying machine. Background Technology

[0002] A powder coating machine is a machine that uses airflow to diffuse dry powder with a certain fineness over a specific area. During operation, compressed air propels the powder outwards, creating a high-speed airflow within the spray gun that draws the powder from the powder container and accelerates its ejection, forming a fine mist. Airflow powder coating machines are easy to operate, highly adaptable, and suitable for coating various powders; they are commonly used in powder coatings, ceramic powders, and other industries.

[0003] Currently, most common airflow powder coating machines on the market use low-pressure airflow to transport powder from a powder storage tank to a nozzle for spraying. Their structure typically includes a powder storage tank, a powder feeding device, a spray gun, and an air pump. Although existing airflow powder coating machines can achieve the function of powder spraying, due to the low airflow pressure, the powder carrying capacity is limited. For spraying large areas or complex surfaces, multiple reciprocating operations are required, which is time-consuming. Furthermore, the low-pressure airflow cannot guarantee the uniform dispersion of powder during the spraying process, which can easily lead to powder accumulation or uneven distribution. Also, the low-pressure airflow cannot effectively transport and spray over long distances, failing to deliver powder to the target location, making it difficult to meet the needs of specific occasions. This can easily result in problems such as low spraying efficiency, uneven spraying, and limited applicability.

[0004] Furthermore, the amount of powder discharged during the current spraying process is controlled by the airflow, which cannot accurately control the amount of powder discharged and is not easy to meet customer needs. Finally, if the powder becomes damp and clumps together, the clumps can easily block the pipes and affect the smoothness of the powder delivery process. Utility Model Content

[0005] The purpose of this utility model is to provide a high-pressure airflow powder coating machine. The high-pressure centrifugal fan increases the airflow pressure, solving the problems of low coating efficiency, uneven coating, and limited applicability. The powder feeding component can accurately control the amount of powder output to meet customer needs. The stirring component can prevent the phenomenon of pipeline blockage caused by powder agglomeration due to moisture, thus improving the smoothness of powder feeding.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure airflow powder spraying machine, comprising a dry powder storage box and a sealing cover disposed on the top of the dry powder storage box, a discharge pipe fixedly disposed at the bottom of the dry powder storage box, a conveying pipe connected to the dry powder storage box being horizontally fixedly disposed at the bottom end of the discharge pipe, a high-pressure centrifugal fan being fixedly disposed at one end of the conveying pipe, and a connecting hose and a spray gun being sequentially disposed at the other end, a powder feeding assembly being vertically fixedly disposed on the bottom wall of the conveying pipe, penetrating the conveying pipe and extending into the discharge pipe, a stirring assembly being fixedly disposed at the top of the powder feeding assembly, and an air inlet pipe connected to the dry powder storage box being fixedly disposed on the conveying pipe.

[0007] Preferably, the powder feeding assembly includes a mounting hole on the side wall of the conveying pipe and a servo motor fixedly mounted on the outer wall of the conveying pipe. A sealed bearing is embedded in the mounting hole. A power shaft is fixedly mounted on the power output end of the servo motor, which passes through the sealed bearing, the conveying pipe, and the discharge pipe in sequence and extends into the dry powder storage box. A spiral blade is fixedly mounted on the outer wall of the middle part of the power shaft and located inside the discharge pipe.

[0008] Preferably, the stirring assembly includes a stirring rod, which is laterally fixed at the top of the power shaft.

[0009] Preferably, the bottom end of the air inlet pipe is connected to the material conveying pipe, and the top end of the air inlet pipe passes through the dry powder storage box and extends upward to a position near the top.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. In this utility model, a high-pressure centrifugal fan is fixedly installed at the end of the conveying pipe. The high-pressure centrifugal fan increases the pressure of the airflow during the powder spraying process. For spraying large areas or complex surfaces, the operation can be completed in a short time. At the same time, the high-pressure airflow can make the powder evenly dispersed during the spraying process, avoiding powder accumulation or uneven distribution. Finally, the high-pressure airflow can effectively transport and spray over long distances, delivering the powder to the target location, meeting the needs of specific occasions and improving the scope of application.

[0012] 2. In this utility model, a powder feeding component is fixedly installed on the outer wall of the conveying pipe. The amount of powder output from the dry powder storage box to the conveying pipe is precisely controlled by the powder feeding component, which can meet the needs of customers.

[0013] 3. In this utility model, a stirring component is fixedly installed on the top of the powder feeding component. The stirring component stirs and crushes the clumped powder, avoiding the phenomenon of clogging the pipe due to the powder getting damp and clumping, and improving the smoothness of powder feeding. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the planar structure of the present invention;

[0015] Figure 2 This utility model Figure 1 A magnified schematic diagram of part A in the diagram.

[0016] In the picture:

[0017] 1-Dry powder storage box, 2-Sealed cover, 3-Discharge pipe, 4-Conveying pipe, 5-High pressure centrifugal fan, 6-Connecting hose, 7-Spray gun, 8-Mounting hole, 9-Sealed bearing, 10-Servo motor, 11-Power shaft, 12-Helical blade, 13-Stirring rod, 14-Air inlet pipe. Detailed Implementation

[0018] 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.

[0019] like Figure 1-2 As shown, a high-pressure airflow powder spraying machine includes a dry powder storage tank 1, combined with... Figure 1 As shown, the dry powder storage box 1 is configured with a conical structure, and the top of the dry powder storage box 1 is provided with a removable sealing cover 2, combined with... Figure 2 As shown, a discharge pipe 3 is fixedly installed at the bottom of the dry powder storage box 1, and a conveying pipe 4 connected to the dry powder storage box 1 is horizontally fixed at the bottom end of the discharge pipe 3. Figure 1 As shown, a high-pressure centrifugal fan 5 is fixedly installed at one end of the conveying pipe 4. Preferably, the high-pressure centrifugal fan 5 is electrically connected to an external power supply line via a power cord. The maximum output air pressure of the high-pressure centrifugal fan 5 can reach 9000Pa. A connecting hose 6 is fixedly installed at the other end, and a spray gun 7 is connected to the end of the connecting hose 6.

[0020] Preferably, the high-pressure centrifugal fan 5 increases the air pressure during the powder spraying process, which can complete the operation in a short time for spraying large areas or complex surfaces. At the same time, the high-pressure airflow can make the powder evenly dispersed during the spraying process, avoiding powder accumulation or uneven distribution. Finally, the high-pressure airflow can effectively transport and spray over long distances, delivering the powder to the target location, meeting the needs of specific occasions and improving the applicability.

[0021] Specifically in this embodiment, combined with Figure 2As shown, a powder feeding assembly is longitudinally fixed on the bottom wall of the conveying pipe 4, extending through the conveying pipe 4 and into the discharge pipe 3. Further, the powder feeding assembly includes a mounting hole 8 on the side wall of the conveying pipe 4 and a servo motor 10 fixed on the outer wall of the conveying pipe 4. Preferably, the servo motor 10 is connected to an external power source via a power cord, and its speed can be adjusted using an adjustment knob. A sealed bearing 9 is embedded in the mounting hole 8. A power shaft 11 is fixedly installed at the power output end of the servo motor 10, extending sequentially through the sealed bearing 9, the conveying pipe 4, and the discharge pipe 3 into the dry powder storage tank 1. A spiral blade 12 is fixedly installed on the outer wall of the middle part of the power shaft 11, located inside the discharge pipe 3. Preferably, the powder feeding assembly precisely controls the amount of powder output from the dry powder storage tank 1 to the conveying pipe 4, meeting customer needs.

[0022] It should be noted that the rotational speed of the spiral blade 12 can be controlled by the adjustment knob on the servo motor 10. The rotational speed of the spiral blade 12 determines the discharge speed, and the coordination between the discharge speed and the rotational speed of the servo motor 10 is determined through experimentation.

[0023] Specifically in this embodiment, combined with Figure 2 As shown, a stirring component is fixedly installed on the top of the powder feeding component. Furthermore, the stirring component includes a stirring rod 13, which is horizontally fixed on the top of the power shaft 11. Preferably, the stirring component stirs and crushes the agglomerated powder to avoid the phenomenon of pipe blockage caused by the powder agglomerating due to moisture, thereby improving the smoothness of powder feeding.

[0024] Specifically in this embodiment, combined with Figure 1 As shown, an air inlet pipe 14 is vertically fixed on the side of the conveying pipe 4 and close to the high-pressure centrifugal fan 5, and is connected to the conveying pipe 4. The top end of the air inlet pipe 14 passes through the dry powder storage box 1 and extends upward inside the dry powder storage box 1 to a position close to the top. Preferably, the air inlet pipe 14 delivers the air force generated by the high-pressure centrifugal fan 5 to the dry powder storage box 1, so that the air in the dry powder storage box 1 is at the same pressure as the air in the conveying pipe 4, which facilitates the downward sliding of the dry powder in the dry powder storage box 1.

[0025] Working principle:

[0026] Before starting work, first open the sealing cover 2 and add powder to the dry powder storage box 1. After adding an appropriate amount of powder, seal the dry powder storage box 1 with the sealing cover 2. Next, turn on the power of the high-pressure centrifugal fan 5 and send the high-pressure airflow generated by the high-pressure centrifugal fan 5 into the conveying pipe 4. Then, adjust the speed of the servo motor 10 according to the spraying scene. When the servo motor 10 rotates, it simultaneously drives the spiral blade 12 and the stirring rod 13 to rotate. The rotation of the spiral blade 12 can evenly and appropriately distribute the powder in the dry powder storage box 1. The powder is fed into the conveying pipe 4. The powder inside the conveying pipe 4 flows in the conveying pipe 4 with the help of the airflow generated by the high-pressure centrifugal fan 5. Through the cooperation of the connecting hose 6 and the spray gun 7, the powder can be evenly sprayed to the ideal position. The air inlet pipe can deliver the airflow generated by the high-pressure centrifugal fan 5 to the dry powder storage box 1, so that the air in the dry powder storage box 1 is at the same pressure as the air in the conveying pipe 4. This avoids the negative pressure generated in the dry powder storage box 1 due to long-term operation, which would affect the normal flow of powder in the dry powder storage box 1.

[0027] 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 high-pressure airflow powder spraying machine, characterized in that: Includes a dry powder storage box (1) and a sealing cover (2) set on the top of the dry powder storage box (1). A discharge pipe (3) is fixedly set at the bottom of the dry powder storage box (1). A conveying pipe (4) connected to the dry powder storage box (1) is fixedly set at the bottom end of the discharge pipe (3). A high-pressure centrifugal fan (5) is fixedly set at one end of the conveying pipe (4), and a connecting hose (6) and a spray gun (7) are set at the other end in sequence. A powder feeding component is fixedly set on the bottom wall of the conveying pipe (4) in the longitudinal direction, penetrating the conveying pipe (4) and extending into the discharge pipe (3). A stirring component is fixedly set on the top of the powder feeding component. An air inlet pipe (14) connected to the dry powder storage box (1) is fixedly set on the conveying pipe (4).

2. The high-pressure airflow powder spraying machine according to claim 1, characterized in that: The powder feeding assembly includes a mounting hole (8) on the side wall of the conveying pipe (4) and a servo motor (10) fixedly mounted on the outer wall of the conveying pipe (4). A sealed bearing (9) is embedded in the mounting hole (8). A power shaft (11) is fixedly mounted on the power output end of the servo motor (10), which passes through the sealed bearing (9), the conveying pipe (4), the discharge pipe (3) and extends into the dry powder storage box (1). A spiral blade (12) is fixedly mounted on the middle outer wall of the power shaft (11) and located inside the discharge pipe (3).

3. A high-pressure airflow powder spraying machine according to claim 2, characterized in that: The stirring assembly includes a stirring rod (13), which is horizontally fixed on the top of the power shaft (11).

4. A high-pressure airflow powder spraying machine according to claim 1, characterized in that: The bottom end of the air inlet pipe (14) is connected to the material conveying pipe (4), and the top end of the air inlet pipe (14) passes through the dry powder storage box (1) and extends upward to a position near the top.

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