Small-dose powder discharge spray gun system

Abstract

The utility model relates to a small-dose powder discharge spray gun system which comprises a fluidization cylinder, and the powder storage amount of the fluidization cylinder is 10-150 g. The Venturi powder pump comprises a powder suction port, an air supply port and a powder outlet, the powder outlet is connected with the spray gun through a pipeline, the powder suction port is connected with a powder pumping pipe, and the powder outlet amount of the Venturi powder pump is 50-150 g / min; the lower end of the powder pumping pipe is inserted into the fluidization cylinder, and the upper end of the powder pumping pipe is connected with the Venturi powder pump; and the air inlet adjusting mechanism is arranged on the powder pumping pipe and is suitable for adjusting the concentration of the powder pumped by the powder pumping pipe. According to the small-dose powder discharging spray gun system, the fluidizing cylinder and the Venturi powder pump which are smaller in size are used instead, the air flow of the Venturi powder pump is reduced, and therefore small-dose powder can be sprayed out, and the requirement for small-dose powder spraying in spray room experiment equipment is met.

Description

Technical Field

[0001] This utility model relates to the field of powder coating, specifically to a small-dose powder spray gun system. Background Technology

[0002] Laboratory powder coating equipment is mainly used for small-dose spraying in the laboratory, especially for metallic powder. Currently, metallic powder coating primarily uses traditional spray guns. However, with traditional spray gun systems, excessive powder application is a common problem. For example, in the laboratory, it's common to use 100 grams or even 150 grams of powder to spray a sample that only requires 10 grams. Because existing spray guns have a high powder output, it's difficult to control the smaller amount of powder. As a result, the powder application rate is less than 10%, which is significantly different from the 60% to 80% powder application rate on actual production lines. Previously, when metallic powder was produced in small quantities, spraying excessive amounts of solid color powder didn't cause quality problems, only more powder waste. However, when spraying metallic powder, large differences in powder application rates during coating can lead to variations in the amount of metallic pigment applied, directly resulting in significant color differences.

[0003] Traditional spray gun designs are used for large-dose powder coating on production lines. Whether on the production line or in the laboratory, everyone uses the same spray gun for powder application, and no one has researched or developed small-dose spray guns. We found that when spraying small samples in the laboratory, only a very small amount of powder can mimic the powder application on the production line, thus avoiding significant discrepancies between the laboratory quality inspection samples and the production line. Given the current limitations of metal powder technology, large differences between laboratory quality inspection samples and production line conditions directly lead to inaccurate quality inspection results, with very serious consequences. Therefore, inventing a spray gun powder supply device capable of controllable and stable spraying of small doses of powder is not only a minor matter of avoiding waste, but also essential for ensuring stable and reliable metal powder quality inspection. Since laboratory spraying of metal powder samples definitely requires small-dose powder application, existing powder spraying systems need to be optimized and adjusted to achieve this. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a small-dose powder spray gun system to solve the technical problem that the traditional spray gun system sprays too much powder, making it difficult to control the amount of powder when applying small doses of powder to experimental samples.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A small-dose powder spray gun system is provided, including...

[0007] Fluidizing cylinder, wherein the powder holding capacity of the fluidizing cylinder is 10-150g;

[0008] A venturi powder pump includes a powder suction port, an air supply port, and a powder outlet. The powder outlet is connected to a spray gun via a pipe, and the powder suction port is connected to a powder extraction pipe. The powder output rate of the venturi powder pump is 50-150 g / min.

[0009] A powder extraction tube, the lower end of which is inserted into the fluidizing cylinder, and the upper end of which is connected to a Venturi powder pump;

[0010] An air intake regulating mechanism is provided on the powder extraction tube and is adapted to regulate the concentration of powder extracted by the powder extraction tube.

[0011] Furthermore, the intake regulating mechanism includes

[0012] Multiple air inlet holes are distributed vertically on the powder extraction tube.

[0013] A sleeve is fitted onto the powder extraction tube, and the sleeve is adapted to block each air inlet hole, thereby adjusting the air intake of the powder extraction tube from each air inlet hole.

[0014] Furthermore, the sleeve moves up and down on the powder extraction tube to block each air inlet hole.

[0015] Furthermore, a U-shaped groove is formed on the sleeve, with the opening of the U-shaped groove located at the upper or lower end of the sleeve. The sleeve rotates on the powder extraction tube, thereby blocking each air inlet hole and adjusting the air intake of the powder extraction tube from each air inlet hole.

[0016] Furthermore, the fluidizing cylinder includes

[0017] The cylinder has a radially outward-protruding hanging edge at its upper end, and the cylinder is adapted to be hung on the cabinet of the powder spraying equipment via the hanging edge.

[0018] Fluidizing plate, which is located at the bottom of the cylinder;

[0019] The fluidizing gas inlet is located on the side wall at the bottom of the cylinder.

[0020] Furthermore, the diameter of the cylinder is 5-8cm and the height is 20-30cm.

[0021] Furthermore, the diameter of the powder extraction tube is 5-12 mm.

[0022] Furthermore, the diameter of the jet needle of the Venturi powder pump is 0.6-0.8 mm.

[0023] The beneficial effects of this utility model are:

[0024] This utility model's small-dose powder spray gun system uses a venturi powder pump with a small powder output and is equipped with a small fluidizing cylinder specifically designed for laboratory sample spraying, thereby enabling powder spraying with a small powder output and meeting the needs of laboratory sample spraying for small-dose powder spraying.

[0025] Small fluidizing drums can fluidize small amounts of powder, best simulating the powder coating process. In fact, the coating effect with a fluidizing drum is much better than that without one.

[0026] The movement of the sleeve on the powder extraction tube can control the number of air inlet holes blocked, thereby controlling the air intake of the powder extraction tube and the powder concentration of the powder extraction tube.

[0027] The sleeve on the powder extraction tube has little effect on the diameter of the powder extraction tube and will not affect its up-and-down movement inside the fluidizing cylinder. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the small-dose powder dispensing spray gun system of this utility model;

[0030] Figure 2 This is a schematic diagram of the first type of intake adjustment mechanism;

[0031] Figure 3 This is a schematic diagram of the second type of intake adjustment mechanism;

[0032] Among them, 1. fluidizing cylinder, 11. hanging edge, 12. fluidizing plate;

[0033] 2. Venturi powder pump; 21. Air jet needle;

[0034] 3. Powder extraction pipe, 31. Air inlet hole, 4. Sleeve, 41. U-shaped groove, 5. Spray gun. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] This application provides a small-dose powder spray gun system, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0037] To address the technical problem in existing technologies that prevent the application of small-dose powder to experimental samples, one embodiment of this application provides a small-dose powder spray gun system. This is described in detail below.

[0038] like Figure 1 As shown, a small-dose powder spray gun system includes...

[0039] Fluidizing cylinder 1, wherein the powder holding capacity of the fluidizing cylinder 1 is 10-150g;

[0040] The Venturi powder pump 2 includes a powder suction port, an air supply port and a powder outlet. The powder outlet is connected to the spray gun 5 through a pipe, and the powder suction port is connected to the powder extraction pipe 3. The air flow rate of the Venturi powder pump 2 is 50-150g / min.

[0041] Powder extraction tube 3, the lower end of which is inserted into fluidizing cylinder 1, and the upper end of which is connected to Venturi powder pump 2;

[0042] An air intake regulating mechanism is provided on the powder extraction pipe 3 and is adapted to regulate the amount of powder extracted by the powder extraction pipe 3.

[0043] Specifically, as an optional implementation of the intake regulating mechanism in this embodiment, such as Figure 2 and Figure 3 As shown, the intake regulating mechanism includes

[0044] Multiple air supply holes 31 are distributed vertically on the powder extraction pipe 3.

[0045] The sleeve 4 is sleeved on the powder extraction tube 3. The sleeve 4 is adapted to block each air inlet 31, thereby adjusting the air intake of the powder extraction tube 3 from each air inlet 31.

[0046] Both the powder extraction tube 3 and the sleeve 4 are made of plastic.

[0047] Specifically, there are three air inlets 31.

[0048] Specifically, as an optional implementation method in this embodiment, such as Figure 2 As shown, the sleeve 4 moves up and down on the powder extraction tube 3 to block each air inlet 31.

[0049] When the sleeve 4 moves upward and blocks the three air inlets 31, the air intake of the powder extraction pipe 3 is at its minimum. When the sleeve 4 moves upward and exposes all three air inlets 31, the air intake of the powder extraction pipe 3 is at its maximum.

[0050] Specifically, as another optional implementation in this embodiment, a U-shaped groove 41 is formed on the sleeve 4. The opening of the U-shaped groove 41 is located at the lower end of the sleeve 4, or it can be located at the upper end. The sleeve 4 rotates on the powder extraction tube 3, thereby blocking each air inlet 31 and adjusting the air intake of the powder extraction tube 3 from each air inlet 31. Figure 3 As shown, at this time, the three air inlets 31 are not blocked, and the air intake of the powder extraction pipe 3 is at its maximum.

[0051] The more air enters the powder extraction tube 3, the thinner the extracted metal powder becomes; the less air enters the powder extraction tube 3, the coarser the extracted metal powder becomes.

[0052] In this embodiment, the air intake regulating mechanism can also directly use an existing mini regulating valve, which is directly connected to the powder extraction pipe 3, and the air intake of the powder extraction pipe 3 is directly controlled by the mini regulating valve.

[0053] Specifically, as an optional implementation method in this embodiment, such as Figure 1 As shown, the fluidizing cylinder 1 includes

[0054] The cylinder has a radially outwardly protruding hanging edge 11 at its upper end, and the cylinder is adapted to be hung on the cabinet of the powder spraying equipment via the hanging edge 11.

[0055] Fluidizing plate 12 is disposed at the bottom of the cylinder;

[0056] The fluidizing gas inlet is located on the side wall at the bottom of the cylinder.

[0057] In this embodiment, the location of the fluidizing gas inlet on the cylinder and the installation method of the fluidizing plate 12 inside the cylinder are existing and can be referenced from the previous fluidizing cylinder 1 structure. This embodiment simply miniaturizes the fluidizing cylinder 1, reducing its volume and size, and controlling its powder storage capacity to 10-150g. Previously, the fluidizing cylinder 1 was large and generally relied on the bottom for support. Now, after miniaturizing the fluidizing cylinder 1, it can be hung on the upper hanging edge 11, facilitating its installation on experimental equipment. Note: The "fluidizing cylinder" used in production is actually quite large, approximately 70 cm high. The length and width vary depending on the number of spray guns 5. The commonly used fluidizing cylinder on the production line is 600 mm square and 700 mm high. The fluidizing cylinders used in the laboratory are much smaller.

[0058] Specifically, as an optional implementation in this embodiment, the diameter of the cylinder is 5-8cm and the height of the cylinder is 20-30cm.

[0059] Specifically, as an optional implementation method in this embodiment, such as Figure 1 As shown, the diameter of the powder extraction tube 3 is 5-12mm. Previously, the diameter of the powder extraction tube 3 was about 20-22mm. Now, the diameter has been reduced by more than half, and the area of ​​the extraction tube has been reduced by several times, making it suitable for small-dose powder output.

[0060] The air flow rate of the Venturi powder pump 2 was changed to 50-150 g / min, whereas the previous air flow rate was 200-500 g / min. By reducing the powder output of the pump, a small dose of powder can be dispensed.

[0061] In this embodiment, the diameter of the jet needle of the Venturi powder pump is 0.6-0.8 mm. Common jet needle diameters are 1.0-1.4 mm; the diameter of the jet needle 21 is now reduced.

[0062] In this implementation, the spray gun 5 and the venturi powder pump 2 involved can be selected from existing mature products with smaller sizes of venturi pumps, or they can be made in their own smaller sizes. The principle and structure of the venturi pumps are the same, so they will not be described in detail.

[0063] The small-dose powder spray gun system of this patent application mainly improves the powder extraction tube 3 and the fluidizing cylinder 1 by miniaturizing both. At the same time, a sleeve 4 is added to the powder extraction tube 3 to control the air intake of the powder extraction tube 3, thereby controlling the concentration of the extracted powder. Through the fluidizing cylinder 1 in this spray gun system, even 10 grams of powder can be fluidized before spraying. The small-dose powder spray gun system can control the output of small doses of metal powder to ensure the powder spraying effect.

[0064] The components of each device selected in this application that do not specify a particular structure are all general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0065] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0066] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0067] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0068] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0069] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0070] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A small-dose powder spray gun system, characterized in that, include Fluidizing cylinder (1), wherein the amount of powder stored in the fluidizing cylinder (1) is 10-150g; The Venturi powder pump (2) includes a powder suction port, an air supply port and a powder outlet. The powder outlet is connected to a spray gun (5) through a pipe, and the powder suction port is connected to a powder extraction pipe (3). The powder output of the Venturi powder pump (2) is 50-100g / min. The lower end of the powder extraction tube (3) is inserted into the fluidizing cylinder (1), and its upper end is connected to the Venturi powder pump (2). An air intake regulating mechanism is provided on the powder extraction pipe (3) and is adapted to regulate the amount of powder extracted by the powder extraction pipe (3).

2. The small-dose powder spray gun system according to claim 1, characterized in that, The intake regulating mechanism includes Multiple air inlet holes (31) are arranged vertically on the powder extraction pipe (3); A sleeve (4) is fitted onto the powder extraction tube (3). The sleeve is adapted to block each air inlet (31), thereby adjusting the air intake of the powder extraction tube (3) from each air inlet (31).

3. The small-dose powder spray gun system according to claim 2, characterized in that, The sleeve (4) moves up and down on the powder extraction tube (3) to block each air inlet (31).

4. The small-dose powder spray gun system according to claim 2, characterized in that, The sleeve has a U-shaped groove (41) with the opening of the U-shaped groove (41) located at the upper or lower end of the sleeve. The sleeve rotates on the powder extraction tube (3) to block each air inlet (31) and adjust the air intake of the powder extraction tube (3) from each air inlet (31).

5. The small-dose powder spray gun system according to claim 1, characterized in that, The fluidizing cylinder (1) includes The cylinder has a radially outwardly protruding hanging edge (11) at its upper end, and the cylinder is adapted to be hung on the cabinet of the powder spraying equipment via the hanging edge (11). Fluidizing plate (12) is disposed at the bottom of the cylinder; The fluidizing gas inlet is located on the side wall at the bottom of the cylinder.

6. The small-dose powder spray gun system according to claim 5, characterized in that, The diameter of the cylinder is 5-8cm, and the height of the cylinder is 20-30cm.

7. The small-dose powder spray gun system according to claim 2, characterized in that, The diameter of the powder extraction tube (3) is 5-12 mm.

8. The small-dose powder spray gun system according to claim 1, characterized in that, The diameter of the jet needle (21) of the Venturi powder pump (2) is 0.6-0.8 mm.

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