Wall surface polisher with dust collection function

Abstract

The utility model relates to wall surface polishing technical field discloses a wall surface polisher with dust collection function, including the shell, the shell inside is provided with dust extraction component, the shell outer wall rotationally connected with connecting rod, the connecting rod one end is provided with handle, the connecting rod inner wall is provided with adjusting assembly, the shell outer wall fixedly connected with motor, motor output fixedly connected with gear reduction box, the gear reduction box output fixedly connected with polishing disc, dust extraction component includes collection cavity, the collection cavity outer wall fixedly connected in the shell inner wall, the polishing disc inside is provided with dust extraction hole. In the utility model, the dust is collected to the collection cavity inside through centrifugal fan cooperation bellows hose, then through the dust is transported to the inside of cyclone separator, avoid plaster, putty dust produced by polishing will diffuse in the air, not only lead to wall surface, ground adhesion a large number of dust, still can lead to subsequent cleaning difficulty increases, increase construction cost.

Description

Technical Field

[0001] This utility model relates to the field of wall sanding technology, and in particular to a wall sander with a dust extraction function. Background Technology

[0002] In the fields of building decoration, old house renovation and wall maintenance, wall sanders are the core equipment for achieving smooth and refined wall treatment. Their main function is to grind the wall base, remove protrusions, burrs, cracks and residual coatings from the wall surface, and lay a smooth and flat foundation for subsequent decorative processes such as painting latex paint and wallpapering.

[0003] In terms of mechanical structure, existing wall sanders typically consist of a main body, a drive motor, a sanding disc, and a hand handle. The drive motor is installed inside the main body, and its output end is connected to the sanding disc to provide power for its rotation. The sanding disc, as the sanding component that directly contacts the wall surface, usually has sandpaper of different grits pasted on its surface. The hand handle is usually located on the sides or bottom of the main body. In terms of technical principle, existing wall sanders mainly rely on the drive motor to drive the sanding disc to rotate at high speed. Through the friction between the sandpaper on the surface of the sanding disc and the wall surface, the putty layer, plaster layer, etc. on the wall surface are cut and ground, thereby removing imperfections such as bumps, burrs, and scratches from the wall surface, so that the wall surface achieves the required smoothness and flatness.

[0004] Existing wall sanders present a significant problem during actual construction: they generate substantial amounts of plaster and putty dust. This dust permeates the air in the work environment, making effective collection and treatment difficult. When the sanding disc rotates at high speed, the dust generated by the friction between the sandpaper and the wall spreads outwards with the airflow, drastically reducing air quality in the work area. Furthermore, a thick layer of dust adheres to surrounding walls, floors, furniture, and equipment, requiring significant time and effort to clean after sanding. This increases the difficulty of subsequent cleaning, prolongs the overall construction period, and necessitates higher labor and cleaning material costs. Therefore, this paper proposes a wall sander with a dust-collecting function to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a wall sander with a dust-collecting function, which aims to improve the problem in the prior art where the gypsum and putty dust generated during sanding will permeate the air, leading to increased difficulty in subsequent cleaning.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A wall sander with a dust-collecting function includes a housing, a dust-collecting component inside the housing, a connecting rod rotatably connected to the outer wall of the housing, a handle at one end of the connecting rod, an adjusting component on the inner wall of the connecting rod, a motor fixedly connected to the outer wall of the housing, a gear reducer fixedly connected to the output end of the motor, and a sanding disc fixedly connected to the output end of the gear reducer. The dust collection assembly includes a collection chamber, the outer wall of which is fixedly connected to the inner wall of the outer shell. A dust collection hole is provided inside the grinding disc. A sealing lip is fixedly connected to the inner wall of the collection chamber. A centrifugal fan is fixedly connected to the top of the collection chamber. The output end of the gear reducer is fixedly connected to the inside of the centrifugal fan. A corrugated hose is fixedly connected to the input end of the centrifugal fan. The outer wall of the corrugated hose is fixedly connected to the inner wall of the collection chamber. A cyclone separator is fixedly connected to the output end of the centrifugal fan.

[0007] As a further description of the above technical solution: The adjustment assembly includes a sliding rod, the outer wall of which is slidably connected to the inner wall of the connecting rod, and one end of the sliding rod is fixedly connected to one end of the handle.

[0008] As a further description of the above technical solution: The sliding rod has a slot inside, and a guide strip is fixedly connected to the outer wall of the sliding rod.

[0009] As a further description of the above technical solution: The outer wall of the guide bar is slidably connected to the inner wall of the connecting rod, and the other end of the sliding rod is fixedly connected to a limit block.

[0010] As a further description of the above technical solution: The outer wall of the limiting block is slidably connected to the inner wall of the connecting rod, and a bracket is fixedly connected to the outer wall of the connecting rod.

[0011] As a further description of the above technical solution: A fixed column is fixedly connected to the outer wall of the bracket, and a rotating block is rotatably connected to the outer wall of the fixed column.

[0012] As a further description of the above technical solution: A torsion spring is fitted on the outer wall of the fixed column. One end of the torsion spring is fixedly connected to the outer wall of the connecting rod, and the other end of the torsion spring is fixedly connected to the outer wall of the rotating block.

[0013] As a further description of the above technical solution: A locking block is fixedly connected to the outer wall of the rotating block, and the outer wall of the locking block is slidably connected to the inner wall of the slot.

[0014] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, a centrifugal fan and a corrugated hose are used to collect dust into the collection chamber. Then, the dust is transported to the cyclone separator, which achieves the effect of collecting dust from wall grinding. This avoids the gypsum and putty dust generated during grinding from spreading in the air, which not only causes a large amount of dust to adhere to the walls and floors, but also increases the difficulty of subsequent cleaning and increases construction costs. This reduces the concentration of dust in the air and reduces the cleaning burden.

[0015] 2. In this utility model, the guide bar is driven by the sliding rod to slide on the inner wall of the connecting rod, and then moves into the slot by the locking block, thereby achieving the effect of adjusting the length of the grinder. This avoids the need to use external equipment such as ladders when grinding high walls, which increases the safety hazards and requires frequent movement of the ladder, increasing the workload. Therefore, it eliminates the need to frequently move the ladder or other auxiliary equipment, thus improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a wall sander with a dust-collecting function proposed in this utility model; Figure 2 This is a schematic diagram of the collection chamber of a wall sander with a dust-collecting function proposed in this utility model; Figure 3 This is a schematic diagram of the structure of the grinding disc of a wall sander with a dust-collecting function proposed in this utility model; Figure 4 This is a schematic diagram of the sliding rod of a wall sander with a dust-collecting function proposed in this utility model. Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0017] Legend: 1. Outer shell; 2. Connecting rod; 3. Handle; 4. Motor; 5. Gear reducer; 6. Grinding disc; 7. Dust suction hole; 8. Collection chamber; 9. Sealing lip; 10. Centrifugal fan; 11. Corrugated hose; 12. Cyclone separator; 13. Sliding rod; 14. Slot; 15. Guide bar; 16. Limiting block; 17. Bracket; 18. Fixed column; 19. Rotating block; 20. Torsion spring; 21. Locking block. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0019] Reference Figures 1-3This utility model provides an embodiment of a wall sander with a dust-collecting function, comprising a shell 1, which is an integral frame supporting and protecting the internal components to ensure stable operation. A dust-collecting component is installed inside the shell 1. A connecting rod 2 is rotatably connected to the outer wall of the shell 1, with a handle 3 at one end for the operator to grip and adjust the working angle and position of the sander using the connecting rod 2 for flexible operation. An adjustment component is installed on the inner wall of the connecting rod 2. A motor 4 is fixedly connected to the outer wall of the shell 1, providing power. The power is transmitted through the output end to drive the gear reducer 5 to operate, thereby providing power for grinding and dust collection. The output end of the motor 4 is fixedly connected to the gear reducer 5. The gear reducer 5 adjusts the speed and torque of the motor 4 and, together with the motor 4, transmits the appropriate power to the grinding disc 6 and the centrifugal fan 10, so that the grinding disc 6 and the centrifugal fan 10 work in coordination. The output end of the gear reducer 5 is fixedly connected to the grinding disc 6, which directly contacts the wall surface to perform grinding operations. Under the power drive, it rotates at high speed to grind the wall surface, thereby achieving a smooth and flat wall surface. The dust collection assembly includes a collection chamber 8, which temporarily stores the dust sucked in from the grinding disc 6, providing a transition space for subsequent dust transport to the centrifugal fan 10, achieving centralized dust processing. The outer wall of the collection chamber 8 is fixedly connected to the inner wall of the outer shell 1. The grinding disc 6 has suction holes 7 inside, allowing dust generated during grinding to enter the collection chamber 8 under negative pressure, thus achieving initial dust collection and rapid entry of dust into the collection system. A sealing lip 9 is fixedly connected to the inner wall of the collection chamber 8. When the grinding disc 6 is working, the sealing lip 9 adheres to the wall, forming a relatively sealed space to prevent dust from escaping from the gap between the grinding disc 6 and the wall, thereby enhancing the dust collection effect. A centrifugal fan 10 is fixedly connected to the top of the collection chamber 8, providing power for dust suction and transport. The centrifugal fan 10, in conjunction with the corrugated hose 11, transports the dust from the collection chamber 8... Dust is sucked in and transported to the cyclone separator 12, achieving the effect of directional dust flow. The output end of the gear reducer 5 is fixedly connected to the inside of the centrifugal fan 10, and the power transmitted by the gear reducer 5 drives the impeller of the centrifugal fan 10 to rotate, so that the centrifugal fan 10 generates negative pressure, achieving a continuous and stable dust suction power. The input end of the centrifugal fan 10 is fixedly connected to the corrugated hose 11, which connects the collection chamber 8 and the centrifugal fan 10. Together with the collection chamber 8 and the centrifugal fan 10, the dust is flexibly transported, avoiding damage to the pipeline due to equipment vibration or position changes, and achieving a stable dust transport effect. The outer wall of the corrugated hose 11 is fixedly connected to the inner wall of the collection chamber 8. The output end of the centrifugal fan 10 is fixedly connected to the cyclone separator 12, which separates the dust-laden airflow, causing the dust to settle inside and clean air to be discharged, achieving an effective dust collection effect.

[0020] Reference Figure 4 and Figure 5 The adjustment component includes a sliding rod 13. The sliding rod 13 changes its overlap length with the connecting rod 2, and works with the handle 3 to adjust the overall length, thus adapting to different working heights. The outer wall of the sliding rod 13 is slidably connected to the inner wall of the connecting rod 2, and one end of the sliding rod 13 is fixedly connected to one end of the handle 3. A slot 14 is provided inside the sliding rod 13, and the slot 14 engages with the locking block 21 to fix the position of the sliding rod 13, thereby locking the adjusted length. A guide strip 1 is fixedly connected to the outer wall of the sliding rod 13. 5. The guide bar 15 restricts the sliding direction of the sliding rod 13 to prevent the sliding rod 13 from rotating during sliding. This, combined with the sliding rod 13, makes length adjustment smoother and achieves precise adjustment. The outer wall of the guide bar 15 is slidably connected to the inner wall of the connecting rod 2. The other end of the sliding rod 13 is fixedly connected to a limit block 16. The limit block 16 prevents the sliding rod 13 from completely sliding out of the inner wall of the connecting rod 2. Together with the sliding rod 13 and the connecting rod 2, it ensures the structural integrity of the adjustment assembly and achieves safe adjustment. The outer wall of the limit block 16 is slidably connected to... A bracket 17 is fixedly connected to the inner wall and outer wall of the connecting rod 2. The bracket 17 is used to install the fixing column 18, providing support for components such as the rotating block 19, achieving the effect of stable installation of each component. The fixing column 18 is fixedly connected to the outer wall of the bracket 17, providing a rotation fulcrum for the rotating block 19. With the cooperation of the rotating block 19, the locking block 21 can rotate flexibly, achieving the effect of quick engagement and disengagement between the locking block 21 and the locking groove 14. The rotating block 19 is rotatably connected to the outer wall of the fixing column 18, and a torsion spring 20 is sleeved on the outer wall of the fixing column 18. The torsion spring 20 provides elastic force to the rotating block 19, causing the locking block 21 to be tightly locked into the slot 14 in its natural state. The locking block 21 and the slot 14 work together to ensure the stability of the length lock and achieve a reliable fixing effect. One end of the torsion spring 20 is fixedly connected to the outer wall of the connecting rod 2, and the other end of the torsion spring 20 is fixedly connected to the outer wall of the rotating block 19. The locking block 21 is fixedly connected to the outer wall of the rotating block 19. The outer wall of the locking block 21 is slidably connected to the inner wall of the slot 14. The locking block 21 works with the slot 14 to position the sliding rod 13 and achieve the effect of fixing the adjusted length.

[0021] Working principle: First, the motor 4 is started, which drives the rotating shaft to rotate the gear reducer 5. Then, the gear reducer 5 drives the grinding disc 6 to perform planetary motion. The rotation of the grinding disc 6 grinds the wall. Then, the gear reducer 5 drives the impeller inside the centrifugal fan 10 to rotate, thereby collecting the dust from the grinding through the dust suction hole 7 into the collection chamber 8. Then, the dust is transported to the cyclone separator 12 through the corrugated hose 11 for gas-solid separation. This prevents the gypsum and putty dust generated from grinding from spreading in the air, which would not only cause a large amount of dust to adhere to the walls and floors, but also increase the difficulty of subsequent cleaning and increase construction costs.

[0022] When adjusting the length of the grinder, first pull the rotating block 19 to make it rotate on the outer wall of the fixed column 18. Then, the torsion spring 20 twists as the rotating block 19 rotates. Next, the rotation of the rotating block 19 causes the locking block 21 to move out of the guide bar 15, releasing the fixation of the sliding rod 13. Then, pull the sliding rod 13 to make the guide bar 15 and the limiting block 16 slide on the inner wall of the connecting rod 2. When the adjustment is in the appropriate position, release the rotating block 19. Then, the rebound of the torsion spring 20 causes the rotating block 19 to reset. Then, the reset of the rotating block 19 causes the locking block 21 to move into the guide bar 15, thus completing the fixation of the sliding rod 13. This avoids the need to use external equipment such as ladders when grinding high walls, which increases the safety hazards and also requires frequent movement of ladders, increasing the workload.

Claims

1. A wall sander with a dust-collecting function, comprising a housing (1), characterized in that: The outer shell (1) is equipped with a dust collection component inside. A connecting rod (2) is rotatably connected to the outer wall of the outer shell (1). A handle (3) is provided at one end of the connecting rod (2). An adjustment component is provided on the inner wall of the connecting rod (2). A motor (4) is fixedly connected to the outer wall of the outer shell (1). A gear reducer (5) is fixedly connected to the output end of the motor (4). A grinding disc (6) is fixedly connected to the output end of the gear reducer (5). The dust collection assembly includes a collection chamber (8), the outer wall of which is fixedly connected to the inner wall of the outer shell (1), a dust collection hole (7) is provided inside the grinding disc (6), a sealing lip (9) is fixedly connected to the inner wall of the collection chamber (8), a centrifugal fan (10) is fixedly connected to the top of the collection chamber (8), the output end of the gear reducer (5) is fixedly connected to the inside of the centrifugal fan (10), a corrugated hose (11) is fixedly connected to the input end of the centrifugal fan (10), the outer wall of the corrugated hose (11) is fixedly connected to the inner wall of the collection chamber (8), and a cyclone separator (12) is fixedly connected to the output end of the centrifugal fan (10).

2. A wall sander with a dust-collecting function according to claim 1, characterized in that: The adjustment assembly includes a sliding rod (13), the outer wall of which is slidably connected to the inner wall of the connecting rod (2), and one end of the sliding rod (13) is fixedly connected to one end of the handle (3).

3. A wall sander with a dust-collecting function according to claim 2, characterized in that: The sliding rod (13) has a slot (14) inside, and a guide strip (15) is fixedly connected to the outer wall of the sliding rod (13).

4. A wall sander with a dust-collecting function according to claim 3, characterized in that: The outer wall of the guide bar (15) is slidably connected to the inner wall of the connecting rod (2), and the other end of the sliding rod (13) is fixedly connected to a limit block (16).

5. A wall sander with a dust-collecting function according to claim 4, characterized in that: The outer wall of the limiting block (16) is slidably connected to the inner wall of the connecting rod (2), and the outer wall of the connecting rod (2) is fixedly connected to the bracket (17).

6. A wall sander with a dust-collecting function according to claim 5, characterized in that: The bracket (17) is fixedly connected to a fixed column (18) on its outer wall, and a rotating block (19) is rotatably connected to the outer wall of the fixed column (18).

7. A wall sander with a dust-collecting function according to claim 6, characterized in that: The outer wall of the fixed column (18) is fitted with a torsion spring (20), one end of the torsion spring (20) is fixedly connected to the outer wall of the connecting rod (2), and the other end of the torsion spring (20) is fixedly connected to the outer wall of the rotating block (19).

8. A wall sander with a dust-collecting function according to claim 7, characterized in that: The outer wall of the rotating block (19) is fixedly connected to a locking block (21), and the outer wall of the locking block (21) is slidably connected to the inner wall of the slot (14).

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