A circulating conveying device for spray coating material powder

Abstract

This utility model belongs to the technical field of circulating conveying devices, and discloses a circulating conveying device for spraying material powder, including a powder supply mechanism, a spraying mechanism, and a circulating control system. It also includes: a powder recovery mechanism, which includes a cyclone separator, and a filter detachably installed on the cyclone separator via a connecting flange; and a powder processing mechanism, which includes a mixing chamber with bidirectional spiral stirring blades. The bidirectional spiral stirring blades include a first spiral stirring plate and a second spiral stirring plate, with the spiral directions of the first and second spiral stirring plates being opposite. The bidirectional spiral stirring blades are driven by a driving component. This utility model, through the synergistic effect of the cyclone separator, multi-stage filter, and bidirectional stirring mechanism, can significantly improve powder recovery efficiency and reduce overspray powder waste. Simultaneously, the closed-loop design can reduce raw material costs and significantly improve powder utilization.

Description

Technical Field

[0001] This utility model relates to the field of circulating conveying devices, and in particular to a circulating conveying device for spraying powder materials. Background Technology

[0002] A circulating conveyor for spraying powder is an automated system specifically designed for powder coating processes. Its core function is to efficiently and continuously convey the spraying powder material and recycle excess powder that has not been sprayed onto the workpiece, forming a closed loop. The purpose is to ensure that the powder material required for spraying can be continuously and stably supplied to the spray gun (or nozzle), while maximizing the recovery, processing, and reuse of powder that has not adhered to the workpiece during the spraying process (overspray powder).

[0003] In the field of industrial spraying, powder coating technology is widely used due to its advantages such as environmental protection and high efficiency. Traditional powder coating systems usually use pneumatic conveying to transport powder from the powder supply device to the spray gun, and then reuse the oversprayed powder through a recycling device. However, there are problems such as low recycling efficiency and incomplete powder separation. Therefore, we propose a circulating conveying device for spraying material powder. Utility Model Content

[0004] In view of the problems of low recovery efficiency and incomplete powder separation in the existing circulating conveying devices, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A circulating conveying device for spray coating material powder includes a powder supply mechanism, a spraying mechanism, and a circulating control system, and further includes:

[0007] A powder recovery mechanism, comprising a cyclone separator connected to the spraying mechanism via a pipe, wherein the cyclone separator is detachably fitted with a filter via a connecting flange;

[0008] The powder processing mechanism includes a mixing chamber connected to the filter via a first conveying pipe. The mixing chamber is provided with bidirectional spiral stirring blades, which include a first spiral stirring blade and a second spiral stirring blade, and the spiral directions of the first spiral stirring blade and the second spiral stirring blade are opposite. The bidirectional spiral stirring blades are driven by a driving member. The mixing chamber is connected to the powder supply mechanism via a second conveying pipe.

[0009] As a technical solution of the circulating conveying device for spraying material powder according to the present utility model, wherein: the inner wall of the filter is provided with a first filter screen, a second filter screen and a third filter screen in sequence along the powder flow direction, and the pore size of the first filter screen, the second filter screen and the third filter screen gradually decreases.

[0010] As a technical solution of the circulating conveying device for spraying material powder described in this utility model, wherein: an electrostatic eliminator is installed on the top of the mixing chamber, and the electrostatic eliminator is connected to the ground via an electric wire.

[0011] As a technical solution of the circulating conveying device for spraying material powder according to the present utility model, the driving component includes a driving motor installed on the mixing chamber, a driving rod is vertically and rotatably installed in the mixing chamber, one end of the driving rod is connected to the output shaft of the driving motor, and the first spiral stirring blade and the second spiral stirring blade are installed on the driving rod.

[0012] As a technical solution of the circulating conveying device for spray coating material powder described in this utility model, the first conveying pipe is connected to the filter through the connecting flange, and the first conveying pipe is made of transparent PVC material.

[0013] As a technical solution of the circulating conveying device for spraying material powder according to the present invention, wherein: the inner wall of the second conveying pipe is coated with a wear-resistant ceramic layer, and the thickness of the wear-resistant ceramic layer is 0.5-1mm.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. This utility model, through the synergistic effect of a cyclone separator, a multi-stage filter, and a bidirectional stirring mechanism, can significantly improve powder recovery efficiency and reduce powder waste caused by overspraying. At the same time, the closed-loop design can reduce raw material costs and significantly improve powder utilization.

[0016] 2. This utility model, through the modular design of a detachable filter, transparent pipe and static eliminator, can simplify maintenance operations and reduce downtime. At the same time, the static elimination and wear-resistant pipe protection can ensure the long-term stable operation of the system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the connection structure between the powder recovery mechanism and the powder processing mechanism of this utility model.

[0019] Figure 2 This is a cross-sectional structural diagram of the powder recovery mechanism of this utility model.

[0020] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] Figure 4 This is a cross-sectional structural diagram of the powder processing mechanism of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] In the diagram: 1. Cyclone separator; 2. Filter; 201. First filter screen; 202. Second filter screen; 203. Third filter screen; 3. Mixing chamber; 4. Drive motor; 5. Drive rod; 601. First spiral mixing blade; 602. Second spiral mixing blade; 7. Connecting flange; 8. Static eliminator; 9. First conveying pipe; 10. Second conveying pipe. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Reference Figures 1-4 A circulating conveying device for spray coating material powder is provided. This circulating conveying device for spray coating material powder includes a powder supply mechanism, a spraying mechanism, and a circulating control system. The circulating control system is electrically connected to each mechanism. The powder supply mechanism, spraying mechanism, and circulating control system are existing technologies and will not be described in detail here. The device also includes:

[0026] The powder recovery mechanism includes a cyclone separator 1 connected to the spraying mechanism via a pipeline. The cyclone separator 1 is detachably equipped with a filter 2 via a connecting flange 7. In application, the cyclone separator 1 achieves efficient gas-solid separation, and the detachable filter 2 facilitates maintenance and replacement, thereby improving recovery efficiency.

[0027] The powder processing mechanism includes a mixing chamber 3 connected to a filter 2 via a first conveying pipe 9. The mixing chamber 3 is equipped with bidirectional spiral stirring blades, including a first spiral stirring blade 601 and a second spiral stirring blade 602, with the spiral directions of the first spiral stirring blade 601 and the second spiral stirring blade 602 being opposite. The bidirectional spiral stirring blades are driven by a drive unit. The mixing chamber 3 is connected to a powder supply mechanism via a second conveying pipe 10. In application, the first spiral stirring blade 601 and the second spiral stirring blade 602 rotate in opposite directions, enhancing the uniformity of powder mixing, preventing clumping or stratification, and then re-transporting the processed powder back to the powder supply mechanism via the second conveying pipe 10, forming a closed-loop cycle and reducing material waste.

[0028] Reference Figure 2 and Figure 3 The inner wall of filter 2 is provided with a first filter screen 201, a second filter screen 202 and a third filter screen 203 in sequence along the powder flow direction, and the pore size of the first filter screen 201, the second filter screen 202 and the third filter screen 203 gradually decreases. In application, the decreasing pore size structure of the first filter screen 201, the second filter screen 202 and the third filter screen 203 realizes graded filtration, which not only intercepts large particulate impurities, but also prevents fine powder leakage, while reducing the risk of clogging of a single filter screen and extending the service life of filter 2.

[0029] Reference Figure 1 and Figure 4 The top of the mixing chamber 3 is equipped with an electrostatic eliminator 8, which is connected to the ground via an electric wire. In application, the grounding eliminates the static electricity of the powder in the mixing chamber 3, preventing the powder from clumping or blocking the pipes due to static adsorption, thus improving the stability and safety of the system.

[0030] Reference Figure 1 and Figure 4 The driving components include a drive motor 4 mounted on the mixing chamber 3, a drive rod 5 vertically and rotatably mounted inside the mixing chamber 3, one end of the drive rod 5 being connected to the output shaft of the drive motor 4, and a first spiral stirring blade 601 and a second spiral stirring blade 602 mounted on the drive rod 5. In application, the vertical transmission design of the drive motor 4 and the drive rod 5 simplifies the mechanical structure and reduces the failure rate. At the same time, the bidirectional spiral stirring blades move synchronously in opposite directions, which can improve the stirring efficiency and reduce energy consumption.

[0031] Reference Figures 1-4 The first conveying pipe 9 is connected to the filter 2 via the connecting flange 7. The first conveying pipe 9 is made of transparent PVC material. In application, the transparent first conveying pipe 9 makes it easy to observe the powder flow status and quickly locate blockages or abnormalities. At the same time, the detachable design of the connecting flange 7 simplifies the cleaning and maintenance process.

[0032] Reference Figures 1-4 The inner wall of the second conveying pipe 10 is coated with a wear-resistant ceramic layer with a thickness of 0.5-1mm. In application, the ceramic coating on the inner wall of the second conveying pipe 10 can enhance the wear resistance, and is especially suitable for conveying high-hardness powders, which can significantly extend the service life of the pipe.

[0033] The working principle of this utility model is as follows: Powder is transported from the powder supply mechanism to the spraying mechanism through a pipeline and sprayed onto the surface of the workpiece. Then, the cyclone separator 1 is started. At this time, the oversprayed powder is sucked in by negative pressure and large particles are separated into the bottom collection bin by centrifugal force. At the same time, it is filtered by the filter 2. At this time, the first filter screen 201 intercepts large particles, the second filter screen 202 removes medium impurities, and the third filter screen 203 captures ultrafine powder. Then, it is transported to the mixing chamber 3 through the first conveying pipeline 9, and the drive motor 4 is started. At this time, the output shaft of the drive motor 4 drives the drive rod 5 to rotate. The drive rod 5 drives the bidirectional spiral stirring blades to mix evenly. At the same time, the static eliminator 8 neutralizes the surface charge of the powder and reduces agglomeration. The processed powder is transported back to the powder supply mechanism through the second conveying pipeline 10 and mixed with new powder in proportion for reuse. This can greatly improve the powder recovery efficiency, reduce the waste of oversprayed powder, reduce raw material costs, and significantly improve the utilization rate of powder.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A circulating conveying device for spray coating material powder, comprising a powder supply mechanism, a spraying mechanism, and a circulating control system, characterized in that: Also includes: The powder recovery mechanism includes a cyclone separator (1) connected to the spraying mechanism via a pipe, and the cyclone separator (1) is detachably equipped with a filter (2) via a connecting flange (7). The powder processing mechanism includes a mixing chamber (3) connected to the filter (2) via a first conveying pipe (9). The mixing chamber (3) is provided with bidirectional spiral stirring blades, which include a first spiral stirring blade (601) and a second spiral stirring blade (602). The spiral directions of the first spiral stirring blade (601) and the second spiral stirring blade (602) are opposite. The bidirectional spiral stirring blades are driven by a driving member. The mixing chamber (3) is connected to the powder supply mechanism via a second conveying pipe (10).

2. A device for the cyclic transport of a powder of a sprayed material according to claim 1, characterized in that: The inner wall of the filter (2) is provided with a first filter screen (201), a second filter screen (202) and a third filter screen (203) in sequence along the powder flow direction, and the pore size of the first filter screen (201), the second filter screen (202) and the third filter screen (203) gradually decreases.

3. A device for the cyclic transport of a powder of a sprayed material according to claim 1, characterized in that: The top of the mixing chamber (3) is equipped with an electrostatic eliminator (8), and the electrostatic eliminator (8) is connected to the ground via an electric wire.

4. The circulating conveying device for spray coating material powder according to claim 1, characterized in that: The driving component includes a drive motor (4) mounted on the mixing chamber (3), a drive rod (5) is vertically and rotatably mounted inside the mixing chamber (3), one end of the drive rod (5) is connected to the output shaft of the drive motor (4), and the first spiral stirring blade (601) and the second spiral stirring blade (602) are mounted on the drive rod (5).

5. A device for the cyclic transport of a powder of a material to be sprayed according to any one of claims 1-4, characterized in that: The first conveying pipe (9) is connected to the filter (2) through the connecting flange (7), and the first conveying pipe (9) is made of transparent PVC material.

6. A device for the cyclic transport of a powder for spraying materials according to any one of claims 1-4, characterized in that: The inner wall of the second conveying pipe (10) is coated with a wear-resistant ceramic layer, the thickness of which is 0.5-1mm.

Images