An adjustable paint volume automatic paint brush structure

Abstract

This utility model provides an adjustable paint volume automatic paint brush structure, including a paint tank, a booster, a paint delivery pipe, a paint brush structure, a flow regulator, a controller, and a flow sensor. The paint brush structure includes a brush handle, a brush head, and a bristle holder. The controller includes a circuit board, a microprocessor, and a battery, and the controller is installed inside the brush handle. The inner cavity of the brush head is divided by a partition to form a buffer chamber and a discharge chamber, and a flow sensor is installed at the outlet of the buffer chamber. The brush handle and brush head are detachably connected via a quick-connect coupling. A flow regulator is located at the end of the paint delivery pipe near the brush handle. A control button electrically connected to the controller is installed on the surface of the brush handle. The microprocessor is electrically connected to the flow sensor, flow regulator, and booster via a circuit. This design enables real-time monitoring and adjustment of the paint output flow rate, achieving uniform and efficient automatic painting and improving coating quality.

Description

Technical Field

[0001] This utility model relates to the technical field of paint brush painting equipment, and in particular to an automatic paint brush structure with adjustable paint volume. Background Technology

[0002] Paintbrushes are commonly used painting tools in everyday decoration, furniture maintenance, and large-scale structural coating repair. Traditional paintbrushes mainly consist of a handle and a brush head with attached bristles. During use, the brush head needs to be repeatedly dipped in paint manually before applying it to the target surface. Chinese patent application publication number CN108480154A, authorized on September 4, 2018, discloses a portable paint application device. Its structure includes a paint bucket, a device base, a sealing cap, an electric / manual dual-purpose pressurizing device, a hand crank, an electric control button, a paint delivery pipe, a buffer ball, a brush, and a carrying strap. The device base is located below the paint bucket and is glued to it. The sealing cap is located on the upper left of the paint bucket and is threaded to it. The electric / manual dual-purpose pressurizing device is located inside the paint bucket on the right side, and the hand crank is located on the front right side of the paint bucket. The existing technology has a significant drawback: uneven paint distribution within the brush head easily leads to inconsistent paint thickness and obvious brush marks on the painted surface, affecting the painting quality. Therefore, a solution is urgently needed. Utility Model Content

[0003] Based on this, the purpose of this utility model is to provide an adjustable paint volume automatic paint brush structure that can monitor and adjust the paint output flow in real time, achieve uniform and efficient automatic brushing, and improve coating quality.

[0004] This utility model provides an adjustable paint volume automatic paint brush structure, including a paint storage tank, a booster, a paint delivery pipe, and a paint brush structure. The top of the paint storage tank is covered with a sealing cap. The booster is sealed to the outlet of the paint storage tank. One end of the paint delivery pipe is connected to the outlet of the booster, and the other end of the paint delivery pipe is connected to the paint brush structure.

[0005] It also includes flow regulators, controllers, and flow sensors;

[0006] The paint brush structure includes a handle, a brush head, and a bristle base;

[0007] The controller includes a circuit board, a microprocessor, and a battery, with the microprocessor and the battery both mounted on the circuit board; the controller as a whole is mounted inside the brush handle.

[0008] The inner cavity of the brush head is divided into a buffer cavity and a discharge cavity by a partition. A flow sensor is installed at the outlet of the buffer cavity. A permeation plate is formed on the side of the discharge cavity away from the buffer cavity. A plurality of first permeation holes are evenly distributed on the surface of the permeation plate. The bristle seat includes a seat body and a plurality of bristles fixedly installed on the seat body. A plurality of second permeation holes are distributed on the seat body and matched with the first permeation holes.

[0009] The brush handle and the brush head are detachably connected by a quick-connect coupling. The flow regulator is provided at one end of the paint supply tube near the brush handle. The flow regulator is connected to the inlet of the buffer chamber through a paint hose, and the paint hose passes through the inside of the quick-connect coupling.

[0010] The brush handle surface is equipped with control buttons that are electrically connected to the controller; the microprocessor is electrically connected to the flow sensor, flow regulator and booster via circuitry.

[0011] Preferably, a bristle seat fitting cavity is formed at the bottom of the brush head below the first permeation hole, a silicone sealing protrusion is formed on the inner side wall of the bristle seat fitting cavity, and a fitting groove is formed on the outer side of the seat body to interfere with the silicone sealing protrusion.

[0012] Preferably, the quick-connector is configured as a snap-fit ​​or threaded sealing connection structure.

[0013] Preferably, the inner wall of the first permeation hole is provided with anti-clogging ridges.

[0014] Preferably, the discharge chamber is provided with a funnel-shaped diverter that is narrow at the top and wide at the bottom, and the diverter has a number of inclined diverting holes evenly distributed inside; the inlet end of the diverter is connected to the outlet of the buffer chamber through a sealing sleeve.

[0015] Preferably, the flow regulator is configured as a rotary flow regulating valve.

[0016] The beneficial effects of this utility model are as follows: through the separation design of the buffer chamber and the discharge chamber, the cooperation of the flow sensor and the regulator, and the quick-connection, the paint flow rate can be accurately controlled and the brush head can be quickly disassembled and assembled. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a cross-sectional view of the paint brush structure.

[0019] Figure 3 This is a schematic diagram of the controller.

[0020] The attached figures are labeled as follows: paint storage tank 10, pressure booster 11, paint delivery pipe 13, paint brush structure 14, sealing cap 12, brush bristles 15, brush head 16, diverter 17, flow sensor 18, brush bristle seat fitting cavity 19, quick connector 20, brush handle 21, buffer cavity 22, flow regulator 23, second penetration hole 24, brush bristle seat 25, fitting groove 26, silicone sealing ring 27, paint hose 28, control button 29, first penetration hole 30, seat 31, circuit board 33, microprocessor 34, penetration plate 32, controller 35, battery 36, inclined diverter hole 37, discharge cavity 38. Detailed Implementation

[0021] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with specific embodiments and accompanying drawings.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.

[0023] Please refer to Figure 1-3 As shown, this utility model provides an adjustable paint volume automatic paint brush structure, including a paint tank 10, a booster 11, a paint delivery pipe 13, and a paint brush structure 14. The top of the paint tank 10 is covered with a sealing cap 12. The booster 11 is sealed to the outlet of the paint tank 10. One end of the paint delivery pipe 13 is connected to the outlet of the booster 11, and the other end is connected to the paint brush structure 14. It also includes a flow regulator 23, a controller 35, and a flow sensor 18. The sealing cap 12 can be a general-purpose plastic sealing container. A miniature electric diaphragm pump (e.g., model: Kamoe KPS-C05) is recommended for the booster 11. The paint delivery pipe 13 is made of flexible food-grade PVC pipe (inner diameter approximately 4mm).

[0024] The controller 35 includes a circuit board 33, a microprocessor 34, and a battery 36. The microprocessor 34 and battery 36 are both mounted on the circuit board 33. The controller 35 is installed inside the brush handle 21. The microprocessor 34 is an STM32F103C8T6 microcontroller. The battery 36 is an 18650 lithium-ion battery (e.g., Panasonic NCR18650B), which powers the system via the circuit board 33.

[0025] The paint brush structure 14 includes a brush handle 21, a brush head 16, and a bristle holder 25. The inner cavity of the brush head 16 is divided by a stainless steel partition to form a buffer chamber 22 and a discharge chamber 38. A flow sensor 18 is installed at the outlet of the buffer chamber 22. A Hall effect flow sensor (e.g., Honeywell ASDX100B) is recommended. A stainless steel permeation plate 32 is formed on the side of the discharge chamber 38 away from the buffer chamber 22. A plurality of first permeation holes 30 are evenly distributed on the surface of the permeation plate 32, with a hole diameter of about 0.5 mm. The bristle holder 25 includes a seat 31 and a plurality of nylon bristles 15 fixedly installed on the seat 31. A plurality of second permeation holes 24 are distributed on the seat 31 and matched and aligned with the first permeation holes 30. The brush handle 21 and the brush head 16 are detachably connected by a quick connector 20. The quick connector 20 is set as a snap-fit ​​(e.g., Colder PLS series) or threaded sealing connection structure. A flow regulator 23 is installed at the end of the paint supply pipe 13 near the brush handle 21. The flow regulator 23 is connected to the inlet of the buffer chamber 22 via a paint hose 28, which passes through the quick connector 20. The flow regulator 23 is a knob-type flow control valve. It is recommended that the flow regulator 23 be a knob-type proportional valve (such as model: Bürkert 6213) to achieve manual or automatic flow adjustment.

[0026] The brush handle 21 has a control button 29 mounted on its surface, which is electrically connected to the controller 35; the microprocessor 34 is electrically connected to the flow sensor 18, the flow regulator 23, and the booster 11 via circuitry. The button is a tactile switch (e.g., model: KailhPG1251).

[0027] The bottom of the brush head 16, located below the first permeation hole 30, forms a bristle seat fitting cavity 19. A silicone sealing protrusion 27 is formed on the inner wall of the bristle seat fitting cavity 19, and a fitting groove 26, which is interference-fitted with the silicone sealing protrusion 27, is formed on the outer surface of the seat body 31. The cooperation between the silicone sealing protrusion 27 and the fitting groove 26 facilitates the disassembly of the seat body 31 for cleaning or replacement, and also ensures a tight seal during use, achieving a leak-proof effect.

[0028] The inner wall of the first penetration hole 30 is provided with anti-clogging ridges, which adopt a spiral ridge design to reduce paint residue.

[0029] The discharge chamber 38 is equipped with a funnel-shaped diverter 17 that is narrow at the top and wide at the bottom. It is made of ABS plastic and has several inclined diverting holes 37 evenly distributed inside. The inlet end of the diverter 17 is connected to the outlet of the buffer chamber 22 through a rubber sealing sleeve to ensure that the paint is evenly distributed to the penetration plate.

[0030] The workflow of this embodiment is as follows: Paint is pressurized from the paint tank 10 by the booster 11, then enters the paint hose 28 through the paint delivery pipe 13 and the flow regulator 23, and then flows into the buffer chamber 22 of the brush head 16 through the quick connector 20. The flow sensor 18 monitors the flow rate in real time, and the data is fed back to the microprocessor 34. The processor adjusts the flow regulator 23 according to the preset value (set via control button 29) to control the paint to enter the discharge chamber 38. The paint is evenly dispersed through the inclined diversion holes 37 of the distributor 17, and penetrates into the brush bristles 15 through the first penetration hole 30 of the penetration plate 32 and the second penetration hole 24 of the bristle seat 25, completing the coating process.

[0031] The main components of the controller and their interconnections:

[0032] Power supply section: The battery provides power, and the power management module supplies power to the system;

[0033] Control core: STM32F103C8T6 microcontroller as the main controller;

[0034] Input devices: a flow sensor detects flow rate, and control buttons receive user commands;

[0035] Output devices: Flow regulating valve controls flow, diaphragm pump provides power, and status indicator lights display system status;

[0036] All components are coordinated and controlled by an STM32F103C8T6 microcontroller, forming a complete control system.

[0037] This invention utilizes a separate design for the buffer chamber and the discharge chamber, combined with a high-precision flow sensor and regulator, to achieve real-time closed-loop control of paint flow, avoiding waste and uneven coating. The quick-connect fittings and the sealed structure of the brush holder's mating chamber facilitate quick disassembly and cleaning. A flow divider and anti-clogging grooves ensure smooth paint flow. The overall structure is compact and reasonable, suitable for painting applications in residential and industrial settings, improving painting efficiency and quality.

[0038] The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An adjustable paint volume automatic paint brush structure, comprising a paint storage tank (10), a booster (11), a paint delivery pipe (13), and a paint brush structure (14), wherein the top of the paint storage tank (10) is covered with a sealing cap (12), the booster (11) is sealed to the outlet of the paint storage tank (10), one end of the paint delivery pipe (13) is connected to the outlet of the booster (11), and the other end of the paint delivery pipe (13) is connected to the paint brush structure (14); Its features are, It also includes a flow regulator (23), a controller (35), and a flow sensor (18); The paint brush structure (14) includes a brush handle (21), a brush head (16), and a bristle base (25); The controller (35) includes a circuit board (33), a microprocessor (34), and a battery (36). The microprocessor (34) and the battery (36) are both mounted on the circuit board (33). The controller (35) is mounted inside the brush handle (21). The inner cavity of the brush head (16) is divided by a partition to form a buffer cavity (22) and a discharge cavity (38). A flow sensor (18) is installed at the outlet of the buffer cavity (22). A permeation plate (32) is formed on the side of the discharge cavity (38) away from the buffer cavity (22). A plurality of first permeation holes (30) are evenly distributed on the surface of the permeation plate (32). The bristle seat (25) includes a seat body (31) and a plurality of bristles (15) fixedly installed on the seat body (31). A plurality of second permeation holes (24) are distributed on the seat body (31) and matched and aligned with the first permeation holes (30). The brush handle (21) and the brush head (16) are detachably connected by a quick connector (20). The paint supply pipe (13) is provided with a flow regulator (23) at one end near the brush handle (21). The flow regulator (23) is connected to the inlet of the buffer chamber (22) through a paint hose (28), and the paint hose (28) passes through the inside of the quick connector (20). The brush handle (21) is equipped with a control button (29) that is electrically connected to the controller (35); the microprocessor (34) is electrically connected to the flow sensor (18), the flow regulator (23) and the booster (11) through a circuit.

2. The adjustable paint volume automatic paint brush structure according to claim 1, characterized in that: The bottom of the brush head (16) is located below the first permeation hole (30) and a bristle seat fitting cavity (19) is formed. A silicone sealing protrusion ring (27) is formed on the inner side wall of the bristle seat fitting cavity (19). A fitting groove (26) that is interference-fitted with the silicone sealing protrusion ring (27) is formed on the outer side of the seat body (31).

3. The adjustable paint volume automatic paint brush structure according to claim 1, characterized in that: The quick connector (20) is configured as a snap-fit ​​or threaded sealing connection structure.

4. The adjustable paint volume automatic paint brush structure according to claim 1, characterized in that: The inner wall of the first permeation hole (30) is provided with anti-clogging ridges.

5. The adjustable paint volume automatic paint brush structure according to claim 1, characterized in that: The discharge chamber (38) is provided with a funnel-shaped diverter (17) that is narrow at the top and wide at the bottom. The diverter (17) has several inclined diverting holes (37) evenly distributed inside. The inlet end of the diverter (17) is connected to the outlet of the buffer chamber (22) through a sealing sleeve.

6. The adjustable paint volume automatic paint brush structure according to claim 1, characterized in that: The flow regulator (23) is configured as a rotary flow regulating valve.

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