A powder spray gun nozzle base

Abstract

The utility model relates to nozzle base technical field discloses a powder spray gun nozzle base, including base body, is equipped with powder anti -accumulation structure on the base body, powder anti -accumulation structure is used for scattering and guiding flow of the powder that enters, can scatter and guide flow of the powder that enters the base through the powder anti -accumulation structure that sets up, avoid the agglomeration accumulation of powder in the base interior, prevent powder delivery channel block, and the installation groove is cooperated with resistance installation channel, and the high -voltage output is realized through the electric connection of the conducting ring and resistance, and the high -voltage electric field needed for electrostatic spraying provides the basis, ensures that powder can effectively charge, the communication design of air inlet, flow guide hole, air mixing hole can guide compressed air accurate blowing to electrode needle, and timely remove the powder that adheres on the surface of electrode needle, avoid the high -voltage electric field disorder caused by powder accumulation, guarantee high -voltage output stability, and then reduce the spraying defect that causes the electric field unevenly.

Description

Technical Field

[0001] This utility model relates to the field of nozzle base technology, and in particular to a powder spray gun nozzle base. Background Technology

[0002] In the field of electrostatic powder coating, the nozzle base of the powder spray gun is the core component that connects powder conveying, high-pressure generation and spraying execution. Its performance directly affects the spraying efficiency, coating quality and equipment maintenance convenience. As industry demands for spraying accuracy, operational stability and cost control continue to increase, traditional powder spray gun nozzle bases have gradually revealed many technical defects and are unable to meet actual production needs.

[0003] In the existing technology, some bases do not have a dedicated high-voltage component installation and conduction structure. The installation positions of conductive parts (such as conductive rings) and resistors are arbitrary, resulting in poor connection stability. They are prone to poor contact due to factors such as vibration and temperature changes, leading to high-voltage output fluctuations. In addition, some bases have an installation structure, but do not consider isolation from the powder conveying channel. Powder can easily enter the high-voltage component installation area, affecting the reliability of electrical connection and further aggravating the problem of unstable high-voltage output. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a powder spray gun nozzle base.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A powder spray gun nozzle base includes a base body, on which a powder anti-accumulation structure is provided. The powder anti-accumulation structure is used to disperse and guide the flow of incoming powder to avoid powder accumulation. The outer periphery of the base body is also provided with a high-voltage conduction and electrode cleaning structure. The high-voltage conduction and electrode cleaning structure includes a mounting groove on the outer periphery of the base body, a resistor mounting channel on one side of the mounting groove, an air inlet on the outer periphery of the base body communicating with the inner cavity of the base body, a guide hole on one side of the air inlet, and an air mixing hole in the inner cavity of the base body. The mounting groove is used to install a conductive ring, the resistor mounting channel is used to install a resistor, and the conductive ring is electrically connected to the resistor to achieve high-voltage output. The air inlet, guide hole, and air mixing hole are connected in sequence to guide compressed air through the air mixing hole to blow towards the electrode needle to remove powder.

[0006] Preferably, the powder anti-accumulation structure includes a feed inlet for powder entry, a powder dispersing structure located inside the base body, and a base head for powder ejection.

[0007] Preferably, the powder-dispersing structure includes flow-guiding ridges for dispersing agglomerated powder.

[0008] Preferably, the surface of the powder-repellent structure is provided with a powder-repellent layer to reduce the adhesion of powder to the surface of the structure.

[0009] Preferably, the base body is further provided with a nozzle positioning groove, which is used to achieve precise alignment between the nozzle and the base during installation to ensure installation accuracy.

[0010] Preferably, a sealing ring groove is provided on the outer periphery of the base body, and the sealing ring groove is used to install the sealing ring.

[0011] Preferably, the base body includes a base tail, which is adapted to the installation interface of an external device.

[0012] Preferably, the base body is also provided with a nameplate for identifying the product brand.

[0013] Preferably, the base head is provided with a nozzle mounting hole, which is used to install a high-pressure nozzle.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention features a powder anti-accumulation structure that disperses and guides the flow of powder entering the base, preventing powder from agglomerating inside the base (such as on the inner wall or in structural dead corners) and blocking the powder delivery channel. The mounting slot works in conjunction with the resistor mounting channel, and the electrical connection between the conductive ring and the resistor enables high-voltage output, providing a foundation for the high-voltage electric field required for electrostatic spraying and ensuring that the powder can be effectively charged. The interconnected design of the air inlet, guide hole, and air mixing hole guides compressed air to be precisely blown onto the electrode needle, promptly removing powder adhering to the surface of the electrode needle and preventing powder accumulation that could disrupt the high-voltage electric field, thus ensuring the stability of the high-voltage output and reducing spraying defects caused by uneven electric field. Attached Figure Description

[0015] Figure 1 A first-view structural diagram of the nozzle base; Figure 2 A schematic diagram of the nozzle base from a first-view cross-sectional perspective. Figure 3 This is a schematic diagram of the nozzle base from a second perspective. Figure 4 This is a schematic diagram of the nozzle base from a second-view cross-sectional perspective.

[0016] In the diagram: 1. Air inlet; 2. Nozzle positioning groove; 3. Base head; 4. Sealing ring groove; 5. Guide hole; 6. Mounting groove; 7. Resistor mounting channel; 8. Air mixing hole; 9. Nozzle mounting hole; 10. Base tail; 11. Nameplate; 12. Feed inlet; 13. Powder dispersing structure; 14. Guide rib; 15. Base body. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figures 1-4 A powder spray gun nozzle base includes a base body 15, on which a powder anti-accumulation structure is provided. The powder anti-accumulation structure is used to disperse and guide the flow of incoming powder to avoid powder accumulation. The outer periphery of the base body 15 is also provided with a high-voltage conduction and electrode cleaning structure. The high-voltage conduction and electrode cleaning structure includes a mounting groove 6 on the outer periphery of the base body 15, a resistor mounting channel 7 on one side of the mounting groove 6, an air inlet 1 on the outer periphery of the base body 15 and connected to the inner cavity of the base body 15, a guide hole 5 on one side of the air inlet 1, and an air mixing hole 8 in the inner cavity of the base body 15. The mounting groove 6 is used to install a conductive ring, the resistor mounting channel 7 is used to install a resistor, and the conductive ring is electrically connected to the resistor to achieve high-voltage output. The air inlet 1, the guide hole 5, and the air mixing hole 8 are connected in sequence to guide compressed air through the air mixing hole 8 to blow towards the electrode needle to remove powder.

[0019] During use, the device utilizes a powder anti-accumulation structure to disperse and guide the flow of powder entering the base, preventing powder from agglomerating inside the base (such as on the inner wall or in structural dead corners) and blocking the powder conveying channel. The mounting slot 6 works in conjunction with the resistor mounting channel 7, achieving high-voltage output through the electrical connection between the conductive ring and the resistor. This provides the foundation for the high-voltage electric field required for electrostatic spraying, ensuring that the powder can be effectively charged. The interconnected design of the air inlet 1, the guide hole 5, and the air mixing hole 8 guides compressed air to be precisely blown onto the electrode needle, promptly removing powder adhering to the surface of the electrode needle. This prevents powder accumulation from causing high-voltage electric field disturbances, ensuring the stability of high-voltage output and reducing spraying defects (such as uneven thickness) caused by uneven electric field.

[0020] In the example of this application, the powder anti-accumulation structure includes a feed inlet 12 for powder to enter, a powder dispersing structure 13 disposed inside the base body 15, and a base head 3 for powder to be sprayed out. The base head 3 serves as a discharge port, the feed inlet 12 is connected to the base head 3, and the air mixing hole 8 is opened in the powder dispersing structure 13.

[0021] As a preferred example of this utility model, the feed inlet 12 provides a stable entry channel for the powder, the powder dispersing structure 13 disperses and guides the powder, and the base head 3 serves as the powder ejection end. The three work together to make the powder conveying process clearer and avoid the powder conveying being obstructed due to structural deficiencies. This allows the powder dispersing structure 13 to act more precisely on the powder conveying process, ensuring that the entire process from powder entry to ejection can effectively prevent accumulation.

[0022] In the example of this application, the powder-dispersing structure 13 includes a guide rib 14 disposed on the side of the main body of the powder-dispersing structure 13 near the feed inlet 12, for dispersing agglomerated powder.

[0023] As a preferred example of this utility model, the guide ridge 14 can physically separate and guide the powder to forcefully disperse the agglomerated powder, preventing the powder from clumping and blocking the channel. Compared with the powder-dispersing structure 13 without the guide ridge 14, the dispersion effect is more significant, especially suitable for powder types that are prone to agglomeration. The guide ridge 14 can guide the powder to flow along a preset path, reduce disordered collisions of powder inside the base, reduce the probability of powder accumulating in non-preset areas, and provide a stable powder output state for subsequent uniform spraying.

[0024] In the example of this application, the surface of the powder-repellent structure 13 is provided with a powder-repellent layer (e.g., polytetrafluoroethylene, which has extremely low surface energy and is one of the most commonly used superhydrophobic coating materials) to reduce the adhesion of powder to the surface of the structure.

[0025] As a preferred example of this utility model, the powder-repellent material itself has low surface energy characteristics, which can reduce the adsorption of powder on the surface of the powder-repellent structure 13, and prevent the powder from accumulating on the surface of the structure for a long time due to strong adhesion. Even if a small amount of powder comes into contact, it is easy to fall off with the airflow. Reducing powder accumulation can reduce the cleaning frequency and wear of the powder-repellent structure 13, avoid damage to the structure due to frequent cleaning or powder friction, extend the overall service life of the base, and reduce maintenance costs.

[0026] In the example of this application, the base body 15 is also provided with a nozzle positioning groove 2, which is used to achieve precise alignment between the nozzle and the base during the installation process to ensure installation accuracy.

[0027] As a preferred example of this utility model, when installing the nozzle, the nozzle positioning groove 2 can provide a clear positioning reference for the nozzle, guide the nozzle to quickly and accurately align with the base for installation, avoid poor fit between the nozzle and the base due to installation misalignment, ensure the accuracy of the nozzle installation position, and guarantee the precision of subsequent spraying.

[0028] In the example of this application, a sealing ring groove 4 is provided on the outer periphery of the base body 15, and the sealing ring groove 4 is used to install a sealing ring.

[0029] As a preferred example of this utility model, after the sealing ring is installed in the sealing ring groove 4, it can fill the gap between the base and the external equipment (or nozzle), prevent powder from leaking from the gap, thus avoiding material waste and environmental pollution. At the same time, it prevents compressed air or powder airflow from moving around, ensuring stable airflow delivery. Through the sealing effect of the sealing ring, it reduces the entry of external impurities (such as dust) into the base, preventing impurities from affecting powder quality or blocking the channel, and improving the overall reliability of the base.

[0030] In the example of this application, the base body 15 includes a base tail 10, which is adapted to the installation interface of an external device.

[0031] As a preferred example of this utility model, the tail portion 10 of the base is adapted to the external equipment mounting interface to ensure that the base can be firmly connected to the external equipment (such as the spray gun body), thereby preventing the base from shifting due to loose connection during the spraying operation and ensuring the stability of the spraying process.

[0032] In the example of this application, the base body 15 is also provided with a nameplate 11 for identifying the product brand.

[0033] As a preferred example of this utility model, the nameplate 11 can be labeled with the product brand, model, parameters, production information, etc., which makes it easy for users to identify the product. At the same time, it can quickly obtain key product information during product maintenance, after-sales service, or quality traceability, thereby improving service efficiency.

[0034] In the example of this application, the base head 3 is provided with a nozzle mounting hole 9, which is connected to the end of the air mixing hole 8 away from the feed inlet 12. The nozzle mounting hole 9 is used to install a high-pressure nozzle.

[0035] As a preferred example of this utility model, the nozzle mounting hole 9 provides a dedicated mounting position for the high-pressure nozzle, ensuring that the high-pressure nozzle can be firmly fitted with the base head 3, preventing the nozzle from loosening or falling off during high-pressure spraying, and ensuring spraying safety; after the high-pressure nozzle is assembled with the base through the mounting hole, it can be combined with the high-pressure conductive structure to form a complete high-pressure spraying system, enabling charged powder to be accurately sprayed out through the high-pressure nozzle, improving spraying accuracy and uniformity, and ensuring the effective realization of electrostatic spraying function.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A powder spray gun nozzle base, comprising a base body (15), characterized in that: The base body (15) is provided with a powder anti-accumulation structure, which is used to disperse the incoming powder and guide its flow. The outer periphery of the base body (15) is also provided with a high voltage conduction and electrode cleaning structure. The high voltage conduction and electrode cleaning structure includes an installation groove (6) on the outer periphery of the base body (15), a resistor installation channel (7) on one side of the installation groove (6), an air inlet (1) on the outer periphery of the base body (15) and connected to the inner cavity of the base body (15), a guide hole (5) on one side of the air inlet (1), and an air mixing hole (8) in the inner cavity of the base body (15). The installation groove (6) is used to install a conductive ring, the resistor installation channel (7) is used to install a resistor, and the conductive ring is electrically connected to the resistor. The air inlet (1), the guide hole (5), and the air mixing hole (8) are connected in sequence to guide compressed air through the air mixing hole (8) to blow towards the electrode needle to remove the powder on the electrode needle.

2. The powder spray gun nozzle base according to claim 1, characterized in that, The powder anti-accumulation structure includes a feed inlet (12) for powder to enter, a powder dispersing structure (13) located inside the base body (15), and a base head (3) for powder to be sprayed out.

3. A powder spray gun nozzle base according to claim 2, characterized in that, The powder-repellent structure (13) includes a flow guide ridge (14).

4. A powder spray gun nozzle base according to claim 3, characterized in that, The surface of the powder-repellent structure (13) is provided with a powder-repellent layer.

5. A powder spray gun nozzle base according to claim 4, characterized in that, The base body (15) is also provided with a nozzle positioning groove (2).

6. A powder spray gun nozzle base according to claim 5, characterized in that, A sealing groove (4) is provided on the outer periphery of the base body (15).

7. A powder spray gun nozzle base according to claim 6, characterized in that, The base body (15) includes a base tail (10), which is adapted to the installation interface of an external device.

8. A powder spray gun nozzle base according to claim 7, characterized in that, The base body (15) is also provided with a nameplate (11).

9. A powder spray gun nozzle base according to claim 8, characterized in that, The base head (3) is provided with a nozzle mounting hole (9), which is used to install a high-pressure nozzle.

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