Wall coating spraying device with limiting function
By designing a wall paint spraying device with a limiting function, the problems of high operational difficulty and uneven spraying when painting the exterior walls of multi-story buildings have been solved, achieving uniform spraying and efficient operation of paint, and improving safety and efficiency.
Patent Information
- Application Number
- CN202520080321.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing paint spraying equipment suffers from problems such as high operational difficulty, bulky equipment, uneven spraying, and low efficiency when painting the exterior walls of multi-story buildings. In particular, it lacks a limiting function when working at heights, which leads to an increase in the number of repainting operations.
A wall paint spraying device with a limiting function was designed, including a back box, a pressurized air pump, a pressurized air pipe, an annular pipe, a guide hose, a spraying pressure switch, and a horn-shaped expansion nozzle. Through the cooperation of the pressurized air pipe and the annular pipe, the uniform spraying and limiting flow of paint are achieved, and excess paint is recovered using the guide limit frame and the collection box.
It achieves uniform spraying of paint within a specified area, reduces the number of touch-ups, improves work efficiency, reduces operational difficulty and labor intensity, and increases safety.
Smart Images
Figure CN223867592U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wall paint spraying technology, specifically a wall paint spraying device with a limiting function. Background Technology
[0002] Paint, traditionally known as varnish in China, is a viscous liquid applied to the surface of an object to be protected or decorated, forming a continuous, firmly adhering film. It is typically made primarily of resin, oil, or emulsion, with or without pigments and fillers, and with appropriate additives, and is prepared using organic solvents or water.
[0003] In the process of painting walls, paint spraying equipment or rollers are required. However, in the painting of exterior walls of some multi-story buildings, the height of buildings from two to six stories is considerable, and roller painting is difficult to operate. Paint spraying equipment is also difficult to use at heights due to its bulkiness. There is neither the equipment for high-altitude operations nor the convenience of low-altitude operations, resulting in many inconveniences. Most existing spraying equipment cannot be used in this scenario. Furthermore, when spraying water-based wall paints, the lack of a limiting function means that workers standing on scaffolding to spray will cause uneven coverage, leading to excessive re-spraying and reduced work efficiency. Based on this, a wall paint spraying device with a limiting function is proposed. Utility Model Content
[0004] The purpose of this utility model is to provide a wall paint spraying device with a limiting function to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a wall paint spraying device with a limiting function, comprising a back box, a sealed filling port connected to the top of the back box, a pressurized air pump fixedly installed on the top of the back box, an air pressure pipe connected to the output end of the pressurized air pump, an annular pipe connected to the bottom end of the air pressure pipe, a plurality of pressurization holes opened on the inner side of the annular pipe, a soft back plate fixedly installed on the back of the back box, two shoulder straps fixedly installed on the back of the back box, a battery box fixedly installed on the front of the back box, a discharge pipe connected to the bottom of the back box, a guide hose connected to the end of the discharge pipe away from the back box, and a guide hose connected to the end of the guide hose away from the discharge pipe. A conical pressurizing tube is connected to the conical pressurizing tube, and a spraying press switch is movably installed inside the conical pressurizing tube. A handle is fixedly sleeved on the outside of the conical pressurizing tube. A pressure-limiting spray hole is provided at the end of the conical pressurizing tube away from the flow guiding hose. A horn-expanding nozzle is connected to the outside of the pressure-limiting spray hole. A clamp is movably sleeved on the outside of the handle. A flow guiding and limiting frame is fixedly installed on the outside of the top of the clamp. Limiting recesses are fixedly installed on the bottom of both sides of the flow guiding and limiting frame. A collection box is slidably installed on the inside of the limiting recess. The top of the inner walls on both sides of the collection box is provided with an arc-shaped surface. Two set screws are threaded to the outside of the limiting recess. Flow guiding grooves are opened on the inner walls on both sides of the flow guiding and limiting frame.
[0006] Preferably, the pneumatic pressurization pipe is fixedly inserted through the back box and extends into the interior of the back box, and the pressurization holes are evenly distributed circumferentially on the inner side of the annular pipe.
[0007] Preferably, the horn-expanding nozzle is fixedly mounted on the outside of the grip, and the switch end of the spraying press switch extends movably to the top of the grip.
[0008] Preferably, the top of both sides of the collection box is slidably mounted on the inner side of the limiting recess frame, the arc-shaped surface is located on the outer side of the bottom of both sides of the flow guiding limiting frame, the two set screws are threaded through the limiting recess frame and extend to the outer side of the collection box, and the limiting recess frame and the flow guiding limiting frame are on the same plane.
[0009] Preferably, the flow guide groove is located inside the side wall of the flow guide limiting frame, one end of the flow guide groove extends to the top of the inner cavity of the flow guide limiting frame, and the horn expansion nozzle is located inside the flow guide limiting frame.
[0010] Preferably, a battery is installed inside the battery box.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: When using the device, the user injects water-based paint into the back box through the sealed filling port, then carries the back box on their back using the shoulder straps and holds the handle. At this time, the pressurizing air pump starts, pressurizing the back box through the air pressure pipe and the annular pipe. The operator holds the handle and presses the spraying press switch, causing the conical pressurizing pipe to connect. Under the action of air pressure, the water-based paint is discharged through the discharge pipe, guided by the flow guide hose, and enters the conical pressurizing pipe. After pressing the spraying press switch to open the circuit, the paint is then sprayed through the pressure-limiting small spray nozzle. The pressurized jet is diffused through the conical diffuser of the horn-shaped expansion nozzle, causing the water-based coating to diffuse and spray under pressure. The water-based coating jet is kept in a certain position under the limit of the flow guiding and limiting frame and sprayed onto the wall. A portion of the water-based coating is sprayed along the limit of the flow guiding and limiting frame under the pressure and the inertia of the jet. A small portion slides down the inner wall of the limit of the flow guiding and limiting frame and flows back into the collection box through the guiding effect of the flow guiding groove, through the limiting concave frame and the arc surface, which is convenient for recycling. The overall solution is convenient to use and lightweight, which makes it easy for operators to operate and increases safety.
[0012] This invention uses a flow-guiding and limiting frame to limit the paint jet ejected from the horn-expanding nozzle, thus guiding and limiting the water-based paint flow and keeping it within a certain range. This reduces the uneven paint distribution at the edges of traditional spraying and reduces the number of touch-up sprays, keeping the paint touch-up spray within a reasonable range. This indirectly improves work efficiency. The device is compact and lightweight, adaptable to various work scenarios, and reduces the difficulty and labor intensity of operators. Attached Figure Description
[0013] Figure 1 This is a front-view stereoscopic structural diagram of the present utility model.
[0014] Figure 2 This is a schematic diagram of the three-dimensional appearance structure of the present invention from a rear-view or upward-looking perspective.
[0015] Figure 3 This is a schematic diagram of the internal structure of the back box of this utility model, viewed from the right side.
[0016] Figure 4 This is a schematic diagram of the internal structure of the flow guide and limiting frame of this utility model, viewed from the right side.
[0017] Figure 5 This utility model Figure 1 Enlarged structural diagram at point A in the middle.
[0018] In the diagram: 1. Back box; 2. Battery box; 3. Sealed filling port; 4. Pressurized air pump; 5. Shoulder strap; 6. Discharge pipe; 7. Flow guide hose; 8. Flow guide limiting frame; 9. Collection box; 10. Soft back plate; 11. Air pressure pipe; 12. Annular ring pipe; 13. Pressurization hole; 14. Limiting recess frame; 15. Arc-shaped surface; 16. Flow guide groove; 17. Handle; 18. Conical pressurization pipe; 19. Horn expansion nozzle; 20. Clamp; 21. Pressure limiting small spray hole; 22. Spraying press switch; 23. Set screw. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figures 1-5 This utility model provides a technical solution: a wall paint spraying device with a limiting function, including a back box 1, a sealed filling port 3 connected to the top of the back box 1, a pressurizing air pump 4 fixedly installed on the top of the back box 1, an air pressure pipe 11 connected to the output end of the pressurizing air pump 4, an annular pipe 12 connected to the bottom end of the air pressure pipe 11, a plurality of pressurizing holes 13 opened on the inner side of the annular pipe 12, a soft back plate 10 fixedly installed on the back of the back box 1, two shoulder straps 5 fixedly installed on the back of the back box 1, a battery box 2 fixedly installed on the front of the back box 1, a discharge pipe 6 connected to the bottom of the back box 1, a guide hose 7 connected to the end of the discharge pipe 6 away from the back box 1, and a conical pressurizing pipe 18 connected to the end of the guide hose 7 away from the discharge pipe 6. A spraying press switch 22 is movably installed inside the conical pressurizing tube 18. A handle 17 is fixedly sleeved on the outside of the conical pressurizing tube 18. A pressure limiting nozzle 21 is provided at the end of the conical pressurizing tube 18 away from the flow guiding hose 7. A horn expansion nozzle 19 is connected to the outside of the pressure limiting nozzle 21. A clamp 20 is movably sleeved on the outside of the handle 17. A flow guiding and limiting frame 8 is fixedly installed on the outside of the top of the clamp 20. Limiting recesses 14 are fixedly installed on the bottom of both sides of the flow guiding and limiting frame 8. A collection box 9 is slidably installed on the inside of the limiting recesses 14. The top of the inner walls on both sides of the collection box 9 is provided with an arc-shaped surface 15. Two set screws 23 are threadedly connected to the outside of the limiting recesses 14. Flow guiding grooves 16 are opened on the inner walls on both sides of the flow guiding and limiting frame 8.
[0021] The working principle of the above technical solution is as follows: During use, the user injects water-based paint into the back box 1 through the sealed filling port 3, then carries the back box 1 on their back using the shoulder strap 5 and holds the handle 17. At this time, the pressurizing air pump 4 is activated, pressurizing the back box 1 through the air pressure pipe 11 and the annular pipe 12. The operator holds the handle 17 and presses the spraying press switch 22, causing the conical pressurizing pipe 18 to be connected. Under the action of air pressure, the water-based paint is discharged through the discharge pipe 6, guided through the flow guiding hose 7, and enters the conical pressurizing pipe 18. After being pressed and connected by the spraying press switch 22, it passes through the pressure-limiting small spray hole. The pressurized jet, after passing through the conical diffusion of the horn-shaped expansion nozzle 19, causes the water-based coating to diffuse and spray under pressure. The water-based coating jet is kept in a certain position under the limitation of the flow-guiding and limiting frame 8 and sprayed onto the wall. A portion of the water-based coating is sprayed along the limitation of the flow-guiding and limiting frame 8 under the pressure and the inertia of the jet. A small portion slides down the inner wall of the limitation of the flow-guiding and limiting frame 8 and flows back into the collection box 9 through the limiting concave frame 14 and the arc-shaped surface 15 under the guidance of the flow-guiding groove 16, making it easy to recycle. The overall solution is convenient to use and has a lightweight structure, which is convenient for operators to carry out operations and increases safety.
[0022] In another implementation scheme, such as Figure 3 As shown, the air pressure tube 11 is fixedly inserted through the back box 1 and extends into the interior of the back box 1, and the pressure holes 13 are evenly distributed in a circle on the inner side of the annular tube 12.
[0023] The air pressure boosting pipe 11 introduces the pressurized airflow from the pressurizing air pump 4 into the annular ring pipe 12, and guides the airflow through the pressurizing holes 13 distributed in the annular ring pipe 12, which facilitates air pressure equalization and stable pressurization.
[0024] In another implementation scheme, such as Figures 1-5 As shown, the horn expansion nozzle 19 is fixedly installed on the outside of the grip 17, and the switch end of the spraying press switch 22 extends movably to the top of the grip 17.
[0025] The inner opening of the horn-expanding nozzle 19 corresponds to the opening of the pressure-limiting small spray hole 21, which compresses and diffuses the paint, effectively increasing the spraying effect. When the back box 1 is pressurized, and the pressure inside the back box 1 is sufficient, and there is a suitable opening such as a small hole or nozzle, the paint can be sprayed out from the opening under pressure. As the paint is sprayed out, due to the internal and external pressure difference and the surface tension of the paint itself, the paint is dispersed into small droplets, thereby producing a certain spraying effect and facilitating spraying. The spray-coated push-button switch 22 itself is existing technology. Another alternative technology that can be used is that the spray-coated push-button switch 22 includes a frame that seals the conical pressurizing tube 18. A flow guide hole is opened in the frame parallel to the conical pressurizing tube 18. The inner side has a movable sleeve. The top of the sleeve has a sealed push handle that extends outward from the handle 17. The sleeve has a connecting hole that is misaligned with the flow guide hole. The bottom of the sleeve is a return spring. When the push handle is pressed, the sleeve moves inside the frame, and the misaligned connecting hole connects with the flow guide hole, so that the water flow is guided through the conical pressurizing tube 18. The function can be both switching and flow interruption. Specifically, existing technology such as the Kobo flow interruption switch PSR-11152R15U1G can be used.
[0026] In another implementation scheme, such as Figures 1-5 As shown, the top of both sides of the collection box 9 is slidably installed on the inner side of the limiting recess 14, and the arc surface 15 is located on the outer side of the bottom of both sides of the flow guiding limiting frame 8. The two set screws 23 are threaded through the limiting recess 14 and extend to the outer side of the collection box 9. The limiting recess 14 and the flow guiding limiting frame 8 are on the same plane.
[0027] The collection box 9 reduces paint outflow and prevents it from flowing along the guide frame 8 and handle 17 to the operator's arm, thus providing added protection. The set screw 23 tightens and presses against the top two ends of the collection box 9, which slides on the outside of the inner side of the limiting recess 14, making it easy to maintain stability and disassemble and replace the collection box 9. The clamp 20 has a movable snap-fit structure, which allows it to slide and adjust its position on the outside of the handle 17, indirectly adjusting the flow limit of the guide frame 8 and the horn expansion nozzle 19, increasing the ease of use of the structure.
[0028] In another implementation scheme, such as Figures 1-5 As shown, the flow guide 16 is located inside the side wall of the flow guide limiting frame 8, and one end of the flow guide 16 extends to the top of the inner cavity of the flow guide limiting frame 8. The horn expansion nozzle 19 is located inside the flow guide limiting frame 8.
[0029] The flow-guiding and limiting frame 8 limits the paint jet ejected from the horn expansion nozzle 19, thus guiding and limiting the water-based paint to keep it within a certain range. This reduces the uneven distribution of paint at the edges of traditional spraying and reduces the number of touch-up sprays, keeping the paint touch-up spray within a reasonable range. This indirectly improves work efficiency. The device is compact and lightweight, adaptable to various work scenarios, and reduces the difficulty and labor intensity of operators.
[0030] In another implementation scheme, such as Figure 1 As shown, the battery box 2 contains a battery.
[0031] The output terminal of the storage battery is electrically connected to the input terminal of the pressurized air pump 4 via a wire, making it convenient to carry the power supply for operation in locations where power supply is inconvenient.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A wall paint spraying device with a limiting function, comprising a back box (1), characterized in that: The top of the back box (1) is connected to a sealed filling port (3). A pressurizing air pump (4) is fixedly installed on the top of the back box (1). The output end of the pressurizing air pump (4) is connected to a pneumatic pressurizing pipe (11). The bottom end of the pneumatic pressurizing pipe (11) is connected to an annular ring pipe (12). Several pressurizing holes (13) are opened on the inner side of the annular ring pipe (12). A soft back plate (10) is fixedly installed on the back of the back box (1). Two shoulder straps (5) are fixedly installed on the back of the back box (1). A battery box (2) is fixedly installed on the front of the back box (1). The bottom of the back box (1) is connected to a discharge pipe (6). The end of the discharge pipe (6) away from the back box (1) is connected to a guide hose (7). The end of the guide hose (7) away from the discharge pipe (6) is connected to a conical pressurizing pipe (18). The conical pressurizing pipe (18) has an internal movable mounting mechanism. Equipped with a spraying press switch (22), a handle (17) is fixedly sleeved on the outside of the conical pressurizing tube (18), a pressure limiting nozzle (21) is provided at the end of the conical pressurizing tube (18) away from the flow guiding hose (7), a horn expansion nozzle (19) is connected to the outside of the pressure limiting nozzle (21), a clamp (20) is movably sleeved on the outside of the handle (17), a flow guiding and limiting frame (8) is fixedly installed on the outside of the top of the clamp (20), a limiting recess frame (14) is fixedly installed on the bottom of both sides of the flow guiding and limiting frame (8), a collection box (9) is slidably installed on the inside of the limiting recess frame (14), an arc surface (15) is provided on the top of the inner wall of both sides of the collection box (9), two set screws (23) are threadedly connected to the outside of the limiting recess frame (14), and a flow guiding groove (16) is opened on the inner wall of both sides of the flow guiding and limiting frame (8).
2. The wall paint spraying device with limiting function according to claim 1, characterized in that: The air pressure tube (11) is fixedly inserted through the back box (1) and extends into the interior of the back box (1). The pressure holes (13) are evenly distributed in a circle on the inner side of the annular tube (12).
3. A wall paint spraying device with a limiting function according to claim 1, characterized in that: The horn expansion nozzle (19) is fixedly installed on the outside of the grip (17), and the switch end of the spraying press switch (22) extends movably to the top of the grip (17).
4. A wall paint spraying device with a limiting function according to claim 1, characterized in that: The top of both sides of the collection box (9) is slidably installed on the inner side of the limiting recess (14). The arc surface (15) is located on the outer side of the bottom of both sides of the flow guiding limiting frame (8). The two set screws (23) are threaded through the limiting recess (14) and extend to the outer side of the collection box (9). The limiting recess (14) and the flow guiding limiting frame (8) are on the same plane.
5. A wall paint spraying device with a limiting function according to claim 1, characterized in that: The flow guide groove (16) is located inside the side wall of the flow guide limiting frame (8), and one end of the flow guide groove (16) extends to the top of the inner cavity of the flow guide limiting frame (8). The horn expansion nozzle (19) is located inside the flow guide limiting frame (8).
6. A wall paint spraying device with a limiting function according to claim 1, characterized in that: The battery box (2) contains a battery.