Electrostatic sprayer

Abstract

The utility model relates to an electrostatic sprayer which comprises a gun body, the gun body comprises a gun barrel and a grab handle, a high-pressure module, an air duct assembly and a fan are arranged in the gun barrel, the air duct assembly is located between the high-pressure module and the grab handle, and the fan is located in the air duct assembly. A storage cup is arranged below the gun barrel, detachably connected with the gun barrel and communicated with the air duct assembly. A diffusion module is arranged at a pipe opening of the gun pipe and extends outwards in the longitudinal direction of the gun pipe. A battery module is arranged below the grab handle and detachably connected with the grab handle. The electrostatic sprayer has the advantages that the storage cup is detachably connected with the gun barrel, powder filling is facilitated, the storage cup is located on the lower portion, the storage cup is convenient to install, and meanwhile the risk that the powder is poured out is avoided; the battery module is detachably connected with the grab handle, so that the battery can be replaced conveniently by disassembling and assembling the battery module, the service time is prolonged, and the working efficiency is improved; the whole device does not need an external power supply and external powder supply and is convenient to carry.

Description

Technical Field

[0001] This utility model relates to the field of powder electrostatic spraying technology, and in particular to an electrostatic sprayer. Background Technology

[0002] Powder coating is a technique that uses powder coating equipment to spray powder coating onto the surface of a workpiece to form a powder coating. Usually, an electrostatic generator causes the powder to become charged when it is sprayed through the nozzle. Under the combined action of electrostatic adsorption and airflow, the powder will be uniformly adsorbed onto the workpiece surface, and after further post-processing, a uniform coating will be formed.

[0003] In the prior art, for example, Chinese Invention Patent Publication No. CN 118663448 A discloses a portable handheld electrostatic spraying device, method, and application, including a shell, a power supply mechanism, a circuit mechanism, a pneumatic mechanism, and circuit wires. The power supply mechanism, circuit mechanism, pneumatic mechanism, and circuit wires are all integrated on the shell. The power supply mechanism and the circuit mechanism are connected by circuit wires, and the circuit mechanism and the pneumatic mechanism are connected by circuit wires. The shell can install the power supply mechanism, circuit mechanism, pneumatic mechanism, and circuit wires and can also protect them. The power supply mechanism can provide power to the circuit mechanism. The circuit mechanism can provide power to the pneumatic mechanism. The pneumatic mechanism can perform spraying operations on the workpiece to be sprayed. However, in this portable handheld electrostatic spraying device, the powder cup is located at the top, and the battery is located inside the hollow rear handle. When the powder cup is installed, the powder is easy to spill out, and the top becomes heavy, which is not conducive to holding. The battery cannot be replaced, and it can only be recharged after the battery is depleted, resulting in low work efficiency. Utility Model Content

[0004] One objective of this application is to provide an electrostatic sprayer that minimizes powder spillage when the storage cup is installed and has high working efficiency.

[0005] The technical solution adopted in this application is as follows: an electrostatic sprayer, including a gun body, the gun body including a gun barrel and a handle, a high-voltage module, an air duct assembly and a fan are provided inside the gun barrel, the air duct assembly is located between the high-voltage module and the handle, and the fan is located inside the air duct assembly; a storage cup is provided below the gun barrel, the storage cup is detachably connected to the gun barrel, and the storage cup is connected to the air duct assembly; a diffusion module is provided at the nozzle of the gun barrel, the diffusion module extends outward along the longitudinal direction of the gun barrel, and the diffusion module is connected to the outlet of the air duct assembly; a battery module is provided below the handle, and the battery module is detachably connected to the handle.

[0006] Compared with the prior art, the advantages of this application are that the storage cup and the barrel are detachably connected, which facilitates the disassembly of the storage cup for powder filling. The storage cup is located at the bottom, which facilitates its installation and eliminates the risk of powder spillage. The battery module and the handle are detachably connected, which facilitates battery replacement by disassembling and assembling the battery module, extending the usage time, improving work efficiency, and allowing the charging of the battery module to be separated from the electrostatic sprayer. The battery module is also located at the bottom, which facilitates its disassembly and assembly. The entire system does not require an external power supply or external powder supply, making it easy to carry. With both the storage cup and the battery module located at the bottom, the weight is concentrated at the bottom, making the electrostatic sprayer more stable when placed upright. The storage cup can serve as a second support point for upright placement, and can also be used for gripping when necessary, making it more practical.

[0007] In some embodiments of this application, the barrel is provided with a downwardly extending connecting section, which is detachably connected to the storage cup via threads. The design of the connecting section allows the storage cup to maintain a certain distance from the barrel, facilitating its installation, and also reduces the height of the storage cup, ensuring that the bottom surface of the storage cup is on the same plane as the bottom surface of the battery pack.

[0008] In some embodiments of this application, a platform is provided at the bottom of the handle; the battery module is a battery pack, and the upper surface of the battery pack is in contact with the bottom surface of the platform. The platform design prevents the gripper from slipping off the handle when held. The platform increases the area at the bottom of the handle, and the electrostatic sprayer can be stably placed on a flat surface through the platform, so as to facilitate the stable placement of the electrostatic sprayer after the battery module is removed.

[0009] Furthermore, the bottom surface of the platform is provided with an inwardly recessed mounting groove, and the battery pack is provided with an upwardly protruding connecting part. The connecting part cooperates with the mounting groove to enable the battery pack to be installed accurately. At the same time, after the connecting part enters the mounting groove, it can also prevent the battery pack from shifting in the horizontal direction relative to the handle, thus preventing shaking.

[0010] In some embodiments of this application, the bottom surface of the battery module and the bottom surface of the storage cup are located on the same plane, that is, the electrostatic sprayer can be placed stably on the plane through the bottom surfaces of the battery pack and the storage cup.

[0011] In some embodiments of this application, the barrel includes a receiving section and an extension section, the diameter of which is larger than the diameter of the extension section; the high-pressure module is located in the receiving section; the fan is located in the receiving section. The receiving section has a larger volume to accommodate and install components, while the extension section extends outward to facilitate the installation of the storage cup, and at the same time keeps the outlet of the air duct assembly away from the handle, making it safer for the user.

[0012] Furthermore, a partition plate is provided within the receiving section, located below the high-voltage module and fitting snugly against the bottom surface of the high-voltage module; the high-voltage module is a high-voltage electrostatic generator. The partition plate design not only separates the high-voltage module from the air duct assembly, further improving safety, but also facilitates the positioning and installation of the high-voltage module.

[0013] In some embodiments of this application, the high-voltage module, fan, handle, and battery module are on the same straight line, which makes the weight mainly concentrated on the straight line where the handle is located, making it convenient for the user to hold the device by the handle.

[0014] In some embodiments of this application, the diffusion module is a scattering head, the cross-sectional area of ​​which gradually increases from the side near the barrel to the side away from the barrel. The design of the scattering head enables the powder to diffuse into an ideal cloud-like ejection.

[0015] In some embodiments of this application, a knob for output adjustment is provided on the side of the barrel. The knob is located on the side for easy user operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0017] Figure 2 This is a cross-sectional view of Embodiment 1 of this utility model;

[0018] Figure 3 yes Figure 2 Enlarged view of part A in the image.

[0019] In the diagram: 1. Gun body; 2. Barrel; 3. Grip; 4. Air duct assembly; 5. Fan; 6. Storage cup; 7. Connecting section; 8. Platform; 9. Battery pack; 10. Mounting slot; 11. Connecting part; 12. Receiving section; 13. Extension section; 14. Divider plate; 15. Scattering head; 16. Knob; 17. High-voltage electrostatic generator. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] Example 1:

[0022] This embodiment provides an electrostatic sprayer, such as... Figure 1 , Figure 2As shown, the gun includes a gun body 1, which includes a barrel 2 and a grip 3. The barrel 2 contains a high-voltage module, an air duct assembly 4, and a fan 5. The air duct assembly 4 is located between the high-voltage module and the grip 3, and the fan 5 is located inside the air duct assembly 4. A storage cup 6 is located below the barrel 2 and is detachably connected to the barrel 2. The storage cup 6 is connected to the air duct assembly 4. A diffusion module is located at the nozzle of the barrel 2 and extends outward along the longitudinal direction of the barrel 2. The diffusion module is connected to the outlet of the air duct assembly 4. A battery module is located below the grip 3 and is detachably connected to the grip 3. In this embodiment, the angle between the barrel 2 and the grip 3 is greater than or equal to 90°; the grip 3 is provided with the on / off switch for the fan 5 and the high-voltage module, and the battery module is electrically connected to the fan 5 and the high-voltage module; the opening of the storage cup 6 faces upward; the air duct assembly 4 is connected to the storage cup 6, and the storage cup 6 is located between the two sections of the air duct assembly 4, so that the airflow in the upper section of the air duct assembly 4 can enter the storage cup 6 to pick up the powder, and then carry the powder into the lower section of the air duct assembly 4, until the powder is blown out from the outlet of the air duct assembly 4.

[0023] The barrel 2 houses the air duct assembly 4, the grip 3 is for the user to hold, the high-voltage module generates high-voltage static electricity and charges the powder, the air duct assembly 4 guides the airflow, the fan 5 delivers airflow to the air duct assembly 4, the storage cup 6 holds the powder, and the diffusion module expands the spraying area. The air duct assembly 4 is located between the high-voltage module and the grip 3, meaning the high-voltage module is further away from the grip 3 for safer use. The storage cup 6 is detachably connected to the barrel 2, facilitating powder loading, and its lower position makes installation easier while preventing... There is a risk of powder spillage; the battery module is detachably connected to the handle 3, which facilitates battery replacement by removing and installing the battery module, extending the usage time, improving work efficiency, and allowing the charging of the battery module to be separated from the electrostatic sprayer. The battery module is located at the bottom, making it easy to remove and install; the whole unit does not require an external power supply or external powder supply, making it easy to carry. The storage cup 6 and the battery module are both located at the bottom, which concentrates the weight at the bottom, making the electrostatic sprayer more stable when placed upright. The storage cup 6 can serve as a second support point for upright placement, and can also be used for gripping when necessary, making it more practical.

[0024] To facilitate the installation of the storage cup 6, the barrel 2 is provided with a downwardly extending connecting section 7, which is detachably connected to the storage cup 6 via threads. The design of the connecting section 7 not only maintains a certain distance between the storage cup 6 and the barrel 2 for easy installation of the storage cup 6, but also reduces the height of the storage cup 6, making it easier for the bottom surface of the storage cup 6 to be on the same plane as the bottom surface of the battery pack 9.

[0025] To facilitate the placement of the electrostatic sprayer, a platform 8 is provided at the bottom of the handle 3; the battery module is a battery pack 9, the upper surface of which is in contact with the bottom surface of the platform 8. The design of the platform 8 provides a large flat surface at the bottom of the handle 3 without affecting the grip at the top. Simultaneously, the barrel 2 at the top and the platform 8 at the bottom of the handle 3 prevent the user from slipping off. The platform 8 increases the area at the bottom of the handle 3, meaning that after the battery module is removed, the electrostatic sprayer can be stably placed on a flat surface via the platform 8, facilitating stable placement of the electrostatic sprayer with the battery module removed. The battery pack 9 facilitates easy replacement, and the large contact area between the upper surface of the battery pack 9 and the bottom surface of the platform 8 distributes the force to the battery pack 9 when the electrostatic sprayer is in its placed position, reducing the force at the connection between the battery pack 9 and the handle 3.

[0026] To ensure reliable installation of the battery pack 9, the bottom surface of the platform 8 is provided with an inwardly recessed mounting groove 10, and the battery pack 9 is provided with an upwardly protruding connecting part 11. The connecting part 11 cooperates with the mounting groove 10 to enable precise installation of the battery pack 9. At the same time, after the connecting part 11 enters the mounting groove 10, it can also prevent the battery pack 9 from shifting in the horizontal direction relative to the handle 3, thus preventing shaking.

[0027] In this embodiment, the contacts of the battery pack 9 are located at the top of the connecting part 11, and the corresponding contacts on the handle 3 are located at the bottom of the mounting groove 10, which provides good protection for the contacts.

[0028] To ensure reliable placement of the electrostatic sprayer, the bottom surface of the battery module and the bottom surface of the storage cup 6 are on the same plane, meaning the electrostatic sprayer can be stably placed on the plane via the bottom surfaces of the battery pack 9 and the storage cup 6.

[0029] For reliable operation of the barrel 2, the barrel 2 includes a receiving section 12 and an extension section 13. The diameter of the receiving section 12 is larger than the diameter of the extension section 13, and the connecting section 7 is located on the extension section 13. The high-voltage module is located in the receiving section 12, and the fan 5 is located in the receiving section 12. The receiving section 12 has a larger volume to accommodate and install components. The extension section 13 extends outward to create a certain distance between the storage cup 6 and the handle 3, facilitating the installation of the storage cup 6 and preventing collision with the handle 3. At the same time, it keeps the outlet of the air duct assembly 4 away from the handle 3, making it safer for the user.

[0030] In this embodiment, the cross-sectional area of ​​the receiving section 12 gradually decreases from the side away from the extension section 13 to the side closer to the extension section 13, and the receiving section 12 and the extension section 13 are connected by a slope transition.

[0031] To ensure reliable installation of the high-voltage module, such as Figure 3As shown, a partition plate 14 is provided inside the receiving section 12. The partition plate 14 is located below the high-voltage module and is in contact with the bottom surface of the high-voltage module. The high-voltage module is a high-voltage electrostatic generator 17. The design of the partition plate 14 can not only separate the high-voltage module from the air duct assembly 4 to further improve safety, but also be used for the positioning and installation of the high-voltage module.

[0032] To facilitate gripping the electrostatic sprayer, the high-voltage module, fan 5, handle 3, and battery module are aligned on the same straight line. This concentrates the weight along the straight line where the handle 3 is located, making it easier for the user to grip the sprayer. The user experiences less outward rotation force when gripping, reducing wrist fatigue.

[0033] To ensure the reliability of the diffusion module, the diffusion module is a scattering head 15, the cross-sectional area of ​​which gradually increases from the side closer to the barrel 2 to the side farther away from the barrel 2. The design of the scattering head 15 enables the powder to diffuse into an ideal cloud-like spray.

[0034] To facilitate powder output adjustment, a knob 16 for output adjustment is provided on the side of the barrel 2. The knob 16 is located on the side for easy user operation. By rotating the knob 16, the speed of the fan 5 can be steplessly adjusted, thus enabling stepless adjustment of powder output.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An electrostatic sprayer, characterized in that, The gun includes a gun body (1), which includes a barrel (2) and a grip (3). The barrel (2) contains a high-voltage module, an air duct assembly (4), and a fan (5). The air duct assembly (4) is located between the high-voltage module and the grip (3), and the fan (5) is located inside the air duct assembly (4). A storage cup (6) is located below the barrel (2). The storage cup (6) is detachably connected to the barrel (2) and is connected to the air duct assembly (4). A diffusion module is located at the nozzle of the barrel (2). The diffusion module extends outward along the longitudinal direction of the barrel (2) and is connected to the outlet of the air duct assembly (4). A battery module is located below the grip (3). The battery module is detachably connected to the grip (3).

2. The electrostatic sprayer according to claim 1, characterized in that: The barrel (2) is provided with a downwardly extending connecting section (7), which is detachably connected to the storage cup (6) by threads.

3. The electrostatic sprayer according to claim 1, characterized in that: The handle (3) has a platform (8) at its bottom; the battery module is a battery pack (9), and the upper surface of the battery pack (9) is in contact with the bottom surface of the platform (8).

4. An electrostatic sprayer according to claim 3, characterized in that: The bottom surface of the platform (8) is provided with an inwardly recessed mounting groove (10), and the battery pack (9) is provided with an upwardly protruding connecting part (11), which cooperates with the mounting groove (10).

5. An electrostatic sprayer according to claim 1, characterized in that: The bottom surface of the battery module and the bottom surface of the storage cup (6) are on the same plane.

6. An electrostatic sprayer according to claim 1, characterized in that: The barrel (2) includes a receiving section (12) and an extension section (13), the diameter of the receiving section (12) being larger than the diameter of the extension section (13); the high-voltage module is located in the receiving section (12); the fan (5) is located in the receiving section (12).

7. An electrostatic sprayer according to claim 6, characterized in that: The receiving section (12) is provided with a partition plate (14), which is located below the high voltage module and is in contact with the bottom surface of the high voltage module; the high voltage module is a high voltage electrostatic generator (17).

8. An electrostatic sprayer according to claim 1, characterized in that: The high-voltage module, fan (5), handle (3) and battery module are on the same straight line.

9. An electrostatic sprayer according to claim 1, characterized in that: The diffusion module is a scattering head (15), and the cross-sectional area of ​​the scattering head (15) gradually increases from the side closer to the barrel (2) to the side farther away from the barrel (2).

10. An electrostatic sprayer according to claim 1, characterized in that: The barrel (2) has a knob (16) on its side for output adjustment.

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