Building wall surface cleaning and polishing device
By introducing a cooling channel and a condensate circulation system into the sanding device, and using negative pressure airflow to cool the sanding disc, the problem of performance degradation and wear caused by high temperature of the sanding disc is solved, achieving efficient sanding effect and ensuring wall quality.
Patent Information
- Application Number
- CN202520475233.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-18
AI Technical Summary
When the grinding disc is working, it generates a lot of heat due to intense friction, which leads to a deterioration of the abrasive performance, an accelerated wear rate, a shortened service life, and may cause the wall material to deform or burn, affecting the grinding quality and efficiency.
Design a building wall cleaning and polishing device that adopts a cooling channel and condensate circulation system. Through the cross design of the condenser pipe and the air inlet channel, the polishing disc is cooled by negative pressure airflow and combined with the dust collection mechanism to achieve efficient cooling of the polishing disc.
It effectively extends the service life of the sanding disc, improves sanding efficiency, prevents wall materials from deforming or scorching due to high temperatures, ensures the quality of wall sanding and decoration effect, and at the same time improves the compactness and practicality of the device.
Smart Images
Figure CN223863450U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wall sanding technology, and more specifically, to a building wall cleaning and sanding device. Background Technology
[0002] A wall cleaning and sanding device is a tool or equipment specifically designed for cleaning and sanding walls. It typically consists of a power system, a sanding mechanism, a vacuum cleaner, and an operating handle. The power system provides power to the sanding operation, driving the sanding disc or sandpaper in the sanding mechanism. Through friction, it removes stains, bumps, uneven areas, and old coatings from the wall surface. The vacuum cleaner simultaneously collects dust and debris generated during sanding, preventing dust from flying and reducing environmental pollution. The operating handle is easy for the operator to hold and control, allowing the device to move flexibly across the wall, efficiently cleaning the wall and achieving a smooth, flat surface, laying the foundation for subsequent wall decoration or maintenance.
[0003] The sanding disc in a sanding mechanism generates a large amount of heat due to intense friction during operation. If not cooled, the temperature of the sanding disc will continue to rise, causing the abrasive performance to deteriorate, the wear rate to accelerate, and the abrasive grains to detach prematurely. This not only shortens the lifespan of the sanding disc but also reduces sanding efficiency. Furthermore, excessively high temperatures may cause the wall materials being sanded, such as putty and paint, to deform, scorch, or even melt, severely affecting the smoothness and aesthetics of the wall surface and significantly compromising the subsequent finishing touches. Utility Model Content
[0004] The purpose of this utility model is to provide a building wall cleaning and sanding device, which aims to solve the technical problems in the background art mentioned above.
[0005] The embodiments of this utility model are implemented as follows:
[0006] This application provides a building wall cleaning and sanding device, including a power system, a sanding mechanism, a dust collection mechanism, and an operating handle that cooperate with each other. The sanding mechanism includes a sanding disc and a protective cover. The sanding disc is provided with multiple cooling channels, one end of any of the cooling channels penetrating the mounting end face of the sanding disc, and the other end penetrating the annular surface of the sanding disc. The protective cover is provided with a mounting cavity, and a condenser pipe filled with condensate is provided in the mounting cavity. The protective cover is provided with multiple air inlet channels, and any of the air inlet channels intersects with the mounting cavity. One end of any of the air inlet channels penetrates the opening side of the protective cover, and the other end penetrates to the inner side of the protective cover and is opposite to the annular surface of the sanding disc. The air inlet of the dust collection mechanism is located inside the protective cover and is opposite to the sanding end face of the sanding disc.
[0007] Furthermore, based on the aforementioned scheme, it also includes a condensate storage tank, which is provided with an outlet and a return outlet. The outlet is connected to the first end of the condenser tube through a first liquid guide pipe, and the return outlet is connected to the second end of the condenser tube through a second liquid guide pipe.
[0008] A circulation pump is installed at the connection between the first liquid guide tube and the liquid outlet.
[0009] Furthermore, based on the aforementioned scheme, the mounting cavity is annular and is arranged along the circumferential direction of the grinding disc;
[0010] The aforementioned condenser tube is a spiral tube and is arranged along the circumferential direction of the aforementioned mounting cavity.
[0011] Furthermore, based on the aforementioned scheme, the ports of the first liquid guide tube and the second liquid guide tube are both located on the outer side of the protective cover. The protective cover is provided with a first flow channel and a second flow channel. The first flow channel connects the first liquid guide tube and the first end of the condenser tube, and the second flow channel connects the second liquid guide tube and the second end of the condenser tube.
[0012] Furthermore, based on the aforementioned scheme, the above-mentioned vacuuming mechanism includes a dust collection box, a negative pressure generator, and a vacuuming pipe that cooperate with each other;
[0013] The dust collection box and the condensate storage tank are housed together in the same container, and a walking structure is provided at the bottom of the container.
[0014] Furthermore, based on the aforementioned scheme, multiple air inlets are provided at the protective cover opposite to the mounting end face of the aforementioned grinding disc;
[0015] The protective cover is provided with a buffer chamber, and the vacuum pipe is connected to the buffer chamber.
[0016] Furthermore, based on the aforementioned scheme, multiple air inlets are connected to the same filter screen.
[0017] Furthermore, based on the aforementioned scheme, the power system includes a drive motor installed in the aforementioned protective cover, used to drive the aforementioned grinding disc to rotate.
[0018] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:
[0019] In actual use, the sanding device of this application creates a negative pressure environment at the air inlet of the dust extraction mechanism. Under this negative pressure, part of the airflow from the dust cover flows through the air inlet channel, fully contacts the condenser pipe installed inside the protective cover, and is cooled. This cooled airflow then contacts the surface of the sanding disc, effectively removing the heat generated by the intense friction during operation. Furthermore, some airflow passes through the cooling channels on the sanding disc and ultimately enters the air inlet of the dust extraction mechanism, further enhancing the cooling effect on the sanding disc. This unique design effectively avoids problems such as abrasive performance degradation, accelerated wear rate, and premature abrasive shedding caused by high temperatures, significantly extending the lifespan of the sanding disc and significantly improving sanding efficiency. Simultaneously, it prevents wall materials from deforming, scorching, or even melting due to overheating of the sanding disc, effectively ensuring the quality of wall sanding and laying a good foundation for subsequent decoration work, thus improving the decoration effect. In addition, this design cleverly integrates cooling and dust extraction structures, greatly improving the compactness and practicality of the overall device design. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is an isometric view of a building wall cleaning and sanding device according to an embodiment of the present invention;
[0022] Figure 2 This is an isometric view of the grinding mechanism according to an embodiment of the present invention;
[0023] Figure 3 This is a cross-sectional view of the grinding mechanism according to an embodiment of the present invention;
[0024] Figure 4 for Figure 1 A magnified view of part A in the image;
[0025] Figure 5 for Figure 3 A magnified view of part B in the image;
[0026] Figure 6 for Figure 3 A magnified view of part C;
[0027] Figure 7 for Figure 3 A magnified view of part D;
[0028] Figure 8 This is a schematic diagram of the structure of the housing in an embodiment of the present utility model.
[0029] Icons: 1-Walking structure, 2-Housing box, 3-Operating handle, 4-Dust suction pipe, 5-Protective cover, 6-Air inlet channel, 7-Cooling channel, 8-Grinding disc, 9-Buffer chamber, 10-Air inlet, 11-Filter screen, 12-First liquid guide pipe, 13-Mounting chamber, 14-Condenser pipe, 15-First flow channel, 16-Second flow channel, 17-Dust collection box, 18-Negative pressure generator, 19-Circulation pump, 20-Condensate storage tank, 21-Second liquid guide pipe, 22-Drive motor. Detailed Implementation
[0030] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0031] Example
[0032] Please refer to Figures 1-8 This application provides a building wall cleaning and sanding device, including a power system, a sanding mechanism, a dust collection mechanism, and an operating handle 3 that cooperate with each other. The sanding mechanism includes a sanding disc 8 and a protective cover 5. The sanding disc 8 is provided with multiple cooling channels 7. One end of any of the cooling channels 7 penetrates the mounting end face of the sanding disc 8, and the other end penetrates the annular surface of the sanding disc 8. The protective cover 5 is provided with a mounting cavity 13. The mounting cavity 13 is provided with a condenser pipe 14 filled with condensate. The protective cover 5 is provided with multiple air inlet channels 6. Any of the air inlet channels 6 intersects with the mounting cavity 13. One end of any of the air inlet channels 6 penetrates the opening side of the protective cover 5, and the other end penetrates to the inner side of the protective cover 5 and is opposite to the annular surface of the sanding disc 8. The air inlet of the dust collection mechanism is located inside the protective cover 5 and is opposite to the sanding end face of the sanding disc 8.
[0033] In actual use, the sanding device of this application creates a negative pressure environment at the air inlet of the dust extraction mechanism. Under this negative pressure, part of the airflow at the dust cover flows through the air inlet channel 6, comes into full contact with the condenser pipe 14 installed inside the protective cover 5, and is cooled. This cooled airflow then contacts the surface of the sanding disc 8, effectively removing the heat generated by the intense friction during operation. Furthermore, some airflow passes through the cooling channel 7 on the sanding disc 8 and ultimately enters the air inlet of the dust extraction mechanism, further enhancing the cooling effect on the sanding disc 8. This unique design effectively avoids problems such as abrasive performance degradation, accelerated wear rate, and premature abrasive shedding caused by high temperatures, greatly extending the service life of the sanding disc 8 and significantly improving sanding efficiency. Simultaneously, it prevents wall materials from deforming, scorching, or even melting due to overheating of the sanding disc 8, effectively ensuring the quality of wall sanding, laying a good foundation for subsequent decoration work, and improving the decoration effect. Furthermore, the design cleverly integrates cooling and dust extraction structures, greatly enhancing the overall compactness and practicality of the device.
[0034] In a preferred embodiment, the system also includes a condensate storage tank 20, which is provided with an outlet and a return outlet. The outlet is connected to the first end of the condenser tube 14 through a first liquid guide tube 12, and the return outlet is connected to the second end of the condenser tube 14 through a second liquid guide tube 21.
[0035] A circulation pump 19 is provided at the connection between the first liquid guide pipe 12 and the liquid outlet.
[0036] In the above embodiment, a complete condensate circulation system is constructed by setting up a condensate storage tank 20, with its outlet connected to the first end of the condenser pipe 14 via the first liquid guide pipe 12, and its return port connected to the second end of the condenser pipe 14 via the second liquid guide pipe 21. A circulation pump 19, installed at the connection between the first liquid guide pipe 12 and the outlet, provides power for the flow of condensate, enabling continuous circulation of condensate between the condensate storage tank 20 and the condenser pipe 14. This circulation process ensures that there is always low-temperature condensate in the condenser pipe 14, which can continuously absorb the heat of the airflow passing through the air inlet channel 6, continuously cooling the airflow, thereby improving the cooling effect on the grinding disc 8. This further prevents the grinding disc 8 from experiencing performance degradation and accelerated wear due to high temperatures, extending the service life of the grinding disc 8, improving grinding efficiency, and ensuring the quality of wall grinding and subsequent decoration effects.
[0037] In a preferred embodiment, the mounting cavity 13 is annular and is arranged along the circumferential direction of the grinding disc 8.
[0038] The aforementioned condenser tube 14 is a spiral tube and is arranged along the circumferential direction of the aforementioned mounting cavity 13.
[0039] In the above embodiment, the mounting cavity 13 is designed as an annular shape and arranged around the circumference of the grinding disc 8. This fully utilizes the internal space of the protective cover 5 and allows the condenser tube 14 to surround the grinding disc 8 during arrangement, providing more comprehensive and uniform cooling conditions for the subsequent cooling airflow. Furthermore, the condenser tube 14 adopts a spiral tube form and is arranged around the circumference of the mounting cavity 13, greatly increasing the contact area between the condenser tube 14 and the airflow flowing through the air inlet channel 6, improving heat exchange efficiency, and allowing more heat to be absorbed by the condensate.
[0040] In a preferred embodiment, the ports of the first liquid guide tube 12 and the second liquid guide tube 21 are both located on the outer side of the protective cover 5. The protective cover 5 is provided with a first flow channel 15 and a second flow channel 16. The first flow channel 15 connects the first liquid guide tube 12 and the first end of the condenser tube 14, and the second flow channel 16 connects the second liquid guide tube 21 and the second end of the condenser tube 14.
[0041] In the above embodiment, the ports of the first liquid guide pipe 12 and the second liquid guide pipe 21 are located on the outer side of the protective cover 5, which facilitates connection with external condensate storage tank 20 and other equipment, reduces the difficulty of installation and maintenance, and eliminates the need to operate inside the protective cover 5, thus improving convenience. The first flow channel 15 and the second flow channel 16 are provided inside the protective cover 5, respectively connecting the ends of the liquid guide pipes and the condensate pipe 14. This effectively avoids the liquid guide pipes being arranged haphazardly inside the protective cover 5, optimizes the internal space structure, and prevents the operation of other components of the device from being affected by the chaotic piping.
[0042] In a preferred embodiment, the above-mentioned dust collection mechanism includes a dust collection box 17, a negative pressure generator 18, and a dust collection pipe 4 that cooperate with each other.
[0043] The dust collection box 17 and the condensate storage tank 20 are both located in the same housing 2, and the bottom of the housing 2 is provided with a walking structure 1.
[0044] In the above embodiment, the dust collection box 17 and the condensate storage tank 20 are placed in the same housing 2, which greatly saves space and makes the layout of the entire device more compact, reducing the equipment's footprint. This has significant advantages in environments with limited space, such as construction sites. The bottom of the housing 2 is equipped with a walking structure 1, which facilitates the operator to move the device to different work areas, improving the device's mobility and convenience.
[0045] As a preferred implementation, a plurality of air inlets 10 are provided at the protective cover 5 opposite to the mounting end face of the grinding disc 8.
[0046] The protective cover 5 is provided with a buffer chamber 9, and the dust suction pipe 4 is connected to the buffer chamber 9.
[0047] In the above embodiment, multiple air inlets 10 are provided at the protective cover 5 opposite to the mounting end face of the grinding disc 8, allowing more outside air to smoothly enter the protective cover 5, providing a sufficient airflow source for cooling the grinding disc 8, enhancing the convective cooling effect, effectively reducing the temperature of the grinding disc 8, reducing problems such as the decline in abrasive performance caused by high temperature, and extending the service life of the grinding disc 8. The buffer chamber 9 provided in the protective cover 5 is connected to the suction pipe 4. When the suction pipe 4 generates negative pressure, the buffer chamber 9 can buffer the airflow, preventing the airflow from being too turbulent and damaging the suction pipe 4, and ensuring the stability and continuity of suction.
[0048] In a preferred embodiment, multiple air inlets 10 are connected to the same filter screen 11.
[0049] In the above embodiments, the filter plate 11 can effectively intercept larger particulate impurities in the outside air and prevent them from entering the dust suction pipe 4 with the airflow.
[0050] In a preferred embodiment, the power system includes a drive motor 22 installed in the protective cover 5, which drives the grinding disc 8 to rotate.
[0051] In the above embodiments, the drive motor 22, as a power source, has the advantage of stable power output.
[0052] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.
[0053] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.
Claims
1. A building wall cleaning and sanding device, comprising a power system, a sanding mechanism, a dust collection mechanism, and an operating handle (3) that cooperate with each other, wherein the sanding mechanism includes a sanding disc (8) and a protective cover (5), characterized in that, The grinding disc (8) is provided with multiple cooling channels (7), one end of any one of the cooling channels (7) penetrates the mounting end face of the grinding disc (8), and the other end penetrates the annular surface of the grinding disc (8); The protective cover (5) is provided with an installation cavity (13), and a condenser pipe (14) filled with condensate is provided in the installation cavity (13). The protective cover (5) is provided with multiple air inlet channels (6). Each air inlet channel (6) has an area that intersects with the installation cavity (13). One end of each air inlet channel (6) passes through the opening side of the protective cover (5), and the other end passes through the inner side of the protective cover (5) and is opposite to the annular surface of the grinding disc (8). The air inlet of the dust collection mechanism is located inside the protective cover (5) and is opposite to the grinding end face of the grinding disc (8).
2. The building wall cleaning and sanding device according to claim 1, characterized in that, It also includes a condensate storage tank (20), which is provided with an outlet and a return port. The outlet is connected to the first end of the condenser tube (14) through a first liquid guide tube (12), and the return port is connected to the second end of the condenser tube (14) through a second liquid guide tube (21). A circulation pump (19) is provided at the connection between the first liquid guide tube (12) and the liquid outlet.
3. The building wall cleaning and sanding device according to claim 2, characterized in that, The mounting cavity (13) is annular and is arranged along the circumferential direction of the grinding disc (8); The condenser tube (14) is a spiral tube and is arranged along the circumferential direction of the mounting cavity (13).
4. The building wall cleaning and sanding device according to claim 3, characterized in that, The ports of the first liquid guide tube (12) and the second liquid guide tube (21) are both located on the outer side of the protective cover (5). The protective cover (5) is provided with a first flow channel (15) and a second flow channel (16). The first flow channel (15) connects the first liquid guide tube (12) and the first end of the condenser tube (14), and the second flow channel (16) connects the second liquid guide tube (21) and the second end of the condenser tube (14).
5. A building wall cleaning and sanding device according to claim 2, characterized in that, The dust collection mechanism includes a dust collection box (17), a negative pressure generator (18), and a dust collection pipe (4) that cooperate with each other; The dust collection box (17) and the condensate storage box (20) are together housed in the same housing (2), and the bottom of the housing (2) is provided with a walking structure (1).
6. The building wall cleaning and sanding device according to claim 5, characterized in that, Multiple air inlets (10) are provided at the protective cover (5) opposite to the mounting end face of the grinding disc (8); The protective cover (5) is provided with a buffer cavity (9), and the dust suction pipe (4) is connected to the buffer cavity (9).
7. A building wall cleaning and sanding device according to claim 6, characterized in that, Multiple air inlets (10) are connected to the same filter screen (11).
8. The building wall cleaning and sanding device according to claim 1, characterized in that, The power system includes a drive motor (22) installed on the protective cover (5) for driving the grinding disc (8) to rotate.