A dust collection device of an external wall surface polishing machine
The design of detachable support rods and negative pressure dust collection system solves the problem of dust dispersion and support rod integration, enabling flexible adaptation of the equipment in different heights and spaces, reducing dust pollution and construction costs, and improving construction convenience and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN GOLDEN ANT CONSTR ENG CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-24
AI Technical Summary
Existing exterior wall grinding machines have dust collection devices that tend to spray out dust when full, and the integrated design of the support rod and grinding head results in poor flexibility in narrow spaces and inconvenience for high-altitude operations, increasing construction costs.
A detachable support structure and a negative pressure dust collection system were designed. The support structure is flexibly adaptable through connecting components. Combined with a motor-driven turntable and pressure plate, it ensures that dust does not escape when the cover is opened, and negative pressure is generated by an air pump to suck up the dust.
It improves the equipment's flexibility in different working heights and narrow spaces, reduces the risks of working at heights, reduces dust pollution and construction costs, and enhances construction convenience and safety.
Smart Images
Figure CN224544246U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust collection device technology, and in particular to a dust collection device for an exterior wall sander. Background Technology
[0002] Grinding is a surface modification technique. It generally refers to a processing method that uses rough objects (such as sandpaper containing high-hardness particles) to change the physical properties of a material surface through friction. Its main purpose is to obtain a specific surface roughness.
[0003] While existing exterior wall sanders are equipped with a dust collection device, the high-pressure dust is easily sprayed out when the cover is opened after the sander is full, failing to solve the problem of secondary pollution. Furthermore, the dust collection device support rod and the sanding head of existing exterior wall sanders are mostly integrated into a single design with a fixed length. When working at low altitudes, the long support rod is prone to jamming, resulting in a decrease in sanding accuracy. When working at high altitudes, the entire set of equipment needs to be changed frequently, increasing the amount of tools carried and construction costs. Therefore, a dust collection device for exterior wall sanders is proposed to solve the above problems. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a dust collection device for an exterior wall sander, aiming to improve the existing technology where the support rod and sanding head are mostly integrated, resulting in limited flexibility in narrow spaces and the problem of high-pressure dust easily being sprayed out when the cover is opened after being full of dust.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dust collection device for an exterior wall sander includes a housing and an outer shell. A lid is rotatably connected to the top of the housing via a hinge. A handle is fixedly connected to the top of the lid. An air pump is fixedly connected to the side of the housing. A connecting pipe is installed at the output end of the air pump, and the other end of the connecting pipe is installed on the outside of the housing. A connecting shell is fixedly connected to the bottom of the outer shell, and a second connecting shell is installed at the bottom of the first connecting shell. A support rod is fixedly connected to the bottom of the second connecting shell. Connecting components are installed inside both the first and second connecting shells. A sanding assembly is installed inside the outer shell. The connecting assembly includes a base, two bases are respectively fixedly connected to the inside of the first connecting shell and the second connecting shell, a semi-circular block is rotatably connected to the inside of each of the two bases, a lever is fixedly connected to the outside of each of the two semi-circular blocks, a tension spring is installed on the outside of the lever, and the end of the tension spring away from the lever is fixedly connected to the inside of the second connecting shell. As a further description of the above technical solution: A motor is fixedly connected to the bottom of the box, a rotating rod is fixedly connected to the output end of the motor, and a turntable is fixedly connected to the top of the rotating rod. As a further description of the above technical solution: Two telescopic rods are fixedly connected to both sides of the box, and a pressure plate is fixedly connected to the output end of the two telescopic rods. As a further description of the above technical solution: Both the first connecting shell and the second connecting shell have sliding grooves on their outer sides, and the lever is slidably connected to the inner side of the sliding groove; As a further description of the above technical solution: The polishing assembly includes a second motor, which is installed inside the first housing. A polishing head is fixedly connected to the output end of the second motor. A protective cover is fixedly connected to the outer side of the first housing. The polishing head is located inside the protective cover. A dust suction pipe is installed on the side of the protective cover, and the other end of the dust suction pipe is installed on the top of the cover. As a further description of the above technical solution: A support plate is fixedly connected to the outside of the box, and the air pump is installed on the top of the support plate; As a further description of the above technical solution: The bottom of the box is fixedly connected to the outer shell 2, and the motor 1 is located in the middle of the outer shell 2; As a further description of the above technical solution: The bottom of the box is fixedly connected to a support leg, and the bottom of the support leg is equipped with a wheel.
[0006] This utility model has the following beneficial effects: 1. In this utility model, the equipment can be flexibly adapted to different working heights and narrow spaces through the cooperation of connecting components, simplifying transportation and storage, reducing the risk of high-altitude operations, and also enabling partial repair and replacement, reducing costs and improving the convenience and safety of exterior wall construction.
[0007] 2. In this utility model, a motor drives a rotating rod, which in turn drives a turntable. Simultaneously, with the cooperation of a telescopic rod and a pressure plate, the dust bag is pressed by the pressure plate and tightened by the turntable after it is full of dust, preventing dust from escaping when the cover is opened, protecting the operator's health, and reducing dust pollution. Attached Figure Description
[0008] Figure 1 This is a three-dimensional schematic diagram of the dust collection device of an exterior wall sander proposed in this utility model; Figure 2 This is a schematic diagram of the air pump structure of the dust collection device of an exterior wall sander proposed in this utility model; Figure 3 This is a schematic diagram of the rotating disc of the dust collection device of an exterior wall sander proposed in this utility model; Figure 4 This is a cross-sectional schematic diagram of the housing of the dust collection device of an exterior wall sander proposed in this utility model; Figure 5 This is a cross-sectional schematic diagram of the connecting component of the dust collection device of an exterior wall sander proposed in this utility model.
[0009] Legend: 1. Grinding head; 2. Protective cover; 3. Outer shell one; 4. Motor one; 5. Connecting shell one; 6. Connecting shell two; 7. Base; 8. Semicircular block; 9. Tension spring; 10. Lever; 11. Slide groove; 12. Vacuum hose; 13. Handle; 14. Cover; 15. Telescopic rod; 16. Pressure plate; 17. Box body; 18. Support leg; 19. Wheel; 20. Support rod; 21. Hinge; 22. Air pump; 23. Support plate; 24. Connecting pipe; 25. Outer shell two; 26. Motor two; 27. Turntable; 28. Rotating rod. Detailed Implementation
[0010] 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.
[0011] Reference Figure 1 , Figure 2 and Figure 5This utility model provides an embodiment of a dust collection device for an exterior wall sander, comprising a housing 17 and an outer shell 13. A cover 14 is rotatably connected to the top of the housing 17 via a hinge 21. The hinge 21 connects the housing 17 and the cover 14. A slot is provided inside the housing 17, and the bottom of the cover 14 engages with the slot, allowing the edge of a dust collection bag to be placed in the slot before closing the cover 14 to compress the dust collection bag and prevent it from shifting. The cover 14 is a sealing cover to prevent dust from escaping due to air leakage at the connection between the housing 17 and the cover 14, and also to prevent air pressure inside the housing 17 from escaping. A handle 13 is fixedly connected to the top of the cover 14 for easy opening and closing. An air pump 22 is fixedly connected to the side of the housing 17, and the output end of the air pump 22 is... A connecting pipe 24 is installed, with the other end of the connecting pipe 24 installed on the outside of the housing 17. A filter screen is installed at the connection between the connecting pipe 24 and the housing 17. The air pump 22 pressurizes the housing 17 to create negative pressure inside. The connecting pipe 24 is used to transmit the pressure of the air pump 22 to the inside of the housing 17. A connecting shell 5 is fixedly connected to the bottom of the outer shell 3. A connecting shell 6 is installed at the bottom of the connecting shell 5. One end of the connecting shell 5 is connected to the bottom of the outer shell 3, and the other end is connected to the connecting shell 6. A support rod 20 is fixedly connected to the bottom of the connecting shell 6. One end of the connecting shell 6 is connected to the support rod 20, and the other end is connected to the connecting shell 5. Connecting components are installed inside both the connecting shell 5 and the connecting shell 6. The connecting shell 5 and the connecting shell 6 are used to protect the internal connecting components. A grinding component is installed inside the outer shell 3. The connecting assembly includes a base 7, with two bases 7 fixedly connected to the interior of connecting shell 1 5 and connecting shell 2 6 respectively. A semi-circular block 8 is rotatably connected inside each of the two bases 7. The base 7 is used to place the semi-circular block 8 and also provides a sliding path for the semi-circular block 8. A lever 10 is fixedly connected to the outer side of each of the two semi-circular blocks 8. The lever 10 is used to control the semi-circular block 8. A tension spring 9 is installed on the outer side of the lever 10. The lever 10 is reset by the tension spring 9. The end of the tension spring 9 away from the lever 10 is fixedly connected to the inner side of connecting shell 2 6. A sliding groove 11 is opened on the outer side of both connecting shell 1 5 and connecting shell 2 6. The lever 10 is slidably connected to the inner side of the sliding groove 11. The sliding groove 11 provides a sliding trajectory for the lever 10 and also limits the range of movement of the lever 10. Reference Figure 3 and Figure 4A motor 4 is fixedly connected to the bottom of the housing 17. A rotating rod 28 is fixedly connected to the output end of the motor 4. A turntable 27 is fixedly connected to the top of the rotating rod 28. The rotating rod 28 connects the turntable 27 and the motor 4. By starting the motor 4, the motor 4 drives the rotating rod 28, which in turn drives the turntable 27 to rotate inside the housing 17. Two telescopic rods 15 are fixedly connected to both sides of the housing 17. A pressure plate 16 is fixedly connected to the output end of the two telescopic rods 15. The two pressure plates 16 face each other to press down the dust collection bag and polishing component package. The device includes a second motor 26, which is installed inside the outer casing 3. The outer casing 3 protects the second motor 26. A grinding head 1 is fixedly connected to the output end of the second motor 26. When the second motor 26 is started, it drives the grinding head 1, which then grinds the wall surface. A protective cover 2 is fixedly connected to the outside of the outer casing 3. The protective cover 2 is used to prevent dust from spreading when the grinding head 1 grinds the wall. The grinding head 1 is located inside the protective cover 2. A suction pipe 12 is installed on the side of the protective cover 2. The other end of the suction pipe 12 is installed on the top of the cover 14. The suction pipe 12 is used to draw the dust inside the protective cover 2 into the housing 17.
[0012] Reference Figure 1 and Figure 3 A support plate 23 is fixedly connected to the outside of the housing 17. An air pump 22 is installed on the top of the support plate 23. The support plate 23 is used to support the air pump 22. A second outer shell 25 is fixedly connected to the bottom of the housing 17. A first motor 4 is located in the middle of the second outer shell 25. The second outer shell 25 is used to protect the first motor 4. A support leg 18 is fixedly connected to the bottom of the housing 17. The support leg 18 is used to support the equipment. A wheel 19 is installed at the bottom of the support leg 18. The wheel 19 is used to facilitate the movement of the equipment.
[0013] Working principle: First, insert the edge of the dust bag into the slot inside the housing 17, then close the cover 14. The cover 14 will press down on the edge of the dust bag. Then start the motor 26, which will drive the grinding head 1 to grind the wall. Simultaneously, the air pump 22 can be started, applying pressure to the inside of the connecting pipe 24. This pressure enters the housing 17, causing the pressure inside the housing 17 to rise and reach the suction pipe 12. 2 will suck the dust inside the protective cover 2 into the dust collection bag. When the dust collection bag is full, the telescopic rod 15 will be activated. The telescopic rod 15 will drive the pressure plate 16, which will press the dust collection bag. When the dust collection bag is pressed down, the motor 4 will be activated. The motor 4 will control the rotating rod 28, which will then control the turntable 27 to rotate. The turntable 27 will then tighten the dust collection bag. This will reduce the amount of dust that will escape when the cover 14 is opened, and will also protect the health of the operator.
[0014] When you encounter a low wall surface that needs sanding, you can move the lever 10. The lever 10 slides on the slide groove 11. When the lever 10 moves the semicircular block 8 to a certain position, the support rod 20 will separate from the outer shell 3. At this time, the support rod 20 can be removed, making it easier for the sanding head 1 to sand the low wall surface. If you want to reassemble the support rod 20 and the outer shell 3, you can align the snap-fit components inside the connecting shell 5 and the connecting shell 6 and then insert them into each other. When it is half inserted, the lever 10 will slide on the slide groove 11 under the tension of the tension spring 9. When the tension spring 9 pulls the lever 10 back to its original position, the internal parts of the connecting shell 5 and the connecting shell 6 will be fully snapped together, thus realizing the mutual assembly of the support rod 20 and the outer shell 3.
[0015] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A dust collection device for an exterior wall sander, comprising a housing (17) and an outer shell (3), characterized in that: The top of the box (17) is rotatably connected to a cover (14) via a hinge (21). A handle (13) is fixedly connected to the top of the cover (14). An air pump (22) is fixedly connected to the side of the box (17). A connecting pipe (24) is installed at the output end of the air pump (22). The other end of the connecting pipe (24) is installed on the outside of the box (17). A connecting shell (5) is fixedly connected to the bottom of the outer shell (3). A connecting shell (6) is installed at the bottom of the connecting shell (5). A support rod (20) is fixedly connected to the bottom of the connecting shell (6). Connecting components are installed inside both the connecting shell (5) and the connecting shell (6). A polishing component is installed inside the outer shell (3). The connecting assembly includes a base (7), two bases (7) are fixedly connected to the inside of the first connecting shell (5) and the second connecting shell (6) respectively. A semi-circular block (8) is rotatably connected inside the two bases (7). A lever (10) is fixedly connected to the outside of the two semi-circular blocks (8). A tension spring (9) is installed on the outside of the lever (10). The end of the tension spring (9) away from the lever (10) is fixedly connected to the inside of the second connecting shell (6).
2. The dust collection device for an exterior wall sander according to claim 1, characterized in that: The bottom of the housing (17) is fixedly connected to a motor (4), the output end of the motor (4) is fixedly connected to a rotating rod (28), and the top of the rotating rod (28) is fixedly connected to a turntable (27).
3. The dust collection device for an exterior wall sander according to claim 1, characterized in that: Two telescopic rods (15) are fixedly connected to both sides of the box (17), and a pressure plate (16) is fixedly connected to the output end of the two telescopic rods (15).
4. The dust collection device for an exterior wall sander according to claim 1, characterized in that: Both the first connecting shell (5) and the second connecting shell (6) have a sliding groove (11) on their outer sides, and the lever (10) is slidably connected to the inner side of the sliding groove (11).
5. The dust collection device for an exterior wall sander according to claim 1, characterized in that: The polishing assembly includes a second motor (26), which is installed inside the first housing (3). The output end of the second motor (26) is fixedly connected to a polishing head (1). A protective cover (2) is fixedly connected to the outside of the first housing (3). The polishing head (1) is located inside the protective cover (2). A vacuum pipe (12) is installed on the side of the protective cover (2). The other end of the vacuum pipe (12) is installed on the top of the cover (14).
6. The dust collection device for an exterior wall sander according to claim 1, characterized in that: A support plate (23) is fixedly connected to the outside of the housing (17), and the air pump (22) is installed on the top of the support plate (23).
7. The dust collection device for an exterior wall sander according to claim 2, characterized in that: The bottom of the housing (17) is fixedly connected to the outer shell (25), and the motor (4) is located in the middle of the outer shell (25).
8. The dust collection device for an exterior wall sander according to claim 1, characterized in that: The bottom of the box (17) is fixedly connected to a support leg (18), and the bottom of the support leg (18) is equipped with a wheel (19).