A cleaning tray and an electric cleaning device equipped with the cleaning tray.

Abstract

This invention provides a cleaning disc and an electric cleaning device using this cleaning disc, aiming to solve the problems of uneven water output and small water output adjustment range in the cleaning discs of existing cleaning devices, while also facilitating the cleaning of the disc itself. Specifically, the cleaning disc described in this invention includes an outer brush disc with a cavity for accommodating an inner brush disc. At least two first water outlet channels are circumferentially spaced at the bottom of the cavity, extending from the edge of the bottom of the cavity towards the center. A second water outlet channel for cleaning the cavity is provided between adjacent first water outlet channels. This design increases the flow area of ​​water within the cavity, ensuring that every corner of the cavity is cleaned by the water flow during rotation. After use, the added second water outlet channel ensures that wastewater is fully discharged, achieving the effect of cleaning the inside of the brush disc without disassembling the cleaning disc.

Description

Technical Field

[0001] This invention belongs to the field of electric cleaning equipment, and particularly relates to a cleaning tray. Background Technology

[0002] Electric cleaning equipment, such as sweepers and scrubbers, reduces labor costs while improving efficiency and cleanliness, making them indispensable in modern society. The structure of the cleaning disc in these devices sometimes directly determines the overall cleaning effect. For example, the prior art patent CN201410363344.9 discloses a circular brush and a high-pressure washer containing it, which has the following structure: the circular brush includes a nozzle upper body and a nozzle lower body fixedly installed together, the nozzle upper body and the nozzle lower body together forming a spray cavity; a brush disc is fixedly installed on the nozzle lower body, the brush disc has a plurality of bristles, and a plurality of water outlet holes are provided on the brush disc between the bristles; a water inlet pipe is connected to the nozzle lower body, and the water outlet of the water inlet pipe extends into the spray cavity; an air inlet channel communicating with the spray cavity is provided on the nozzle upper body, and a booster is provided between the air inlet channel and the water outlet of the water inlet pipe to increase the air pressure entering the spray cavity; the booster is located inside the spray cavity. This invention's circular brush has advantages such as energy saving and water saving, good rinsing effect, protection of the vehicle body, and long service life, and is widely used in vehicle cleaning.

[0003] However, the water output from this structure is very uneven. Furthermore, to ensure the strength of the cleaning disc, the inlet water pressure cannot be too high; excessively high water pressure can cause the cleaning disc to twist, deform, or even break, affecting the lifespan of the entire cleaning equipment. After prolonged use, the cleaning disc requires cleaning, but existing cleaning technologies have blind spots, requiring disassembly for cleaning, which is inconvenient. Similarly, repeated disassembly and cleaning will also shorten the lifespan of the cleaning equipment. Summary of the Invention

[0004] This invention provides an electric cleaning device, and in particular a cleaning disc for such an electric cleaning device, which aims to solve the problems of uneven water output and small water output adjustment range in the cleaning discs of existing cleaning devices, while also facilitating the cleaning of the cleaning disc itself.

[0005] To address this, the present invention describes a cleaning disc comprising an outer brush disc with a cavity for accommodating an inner brush disc. At least two first water outlet channels are circumferentially spaced at the bottom of the cavity, extending from the edge of the bottom of the cavity towards the center. A second water outlet channel for cleaning the cavity is provided between adjacent first water outlet channels. This design increases the flow area of ​​water within the cavity, ensuring that every corner of the cavity is cleaned by the water flow during rotation.

[0006] Preferably, the cavity includes a bottom surface and side walls, and the second water outlet channel is disposed on the bottom surface of the cavity and located at the junction of the bottom surface and the side walls. The second water outlet channel increases the water outlet space at the bottom of the cavity while preventing damage to the bottom of the cavity from water flow impact.

[0007] Preferably, an inner baffle is provided on one side of the first water outlet channel, the inner baffle is closely attached to the first water outlet channel, and the length of the inner baffle is greater than the length of the first water outlet channel.

[0008] Preferably, the first water outlet channel is a single water outlet trough or multiple consecutive water outlet holes; the second water outlet channel is also a single water outlet trough or multiple consecutive water outlet holes. The first and second water outlet channels can actually be a single curved water trough or multiple evenly arranged water outlet holes, which can be circular or elongated with curved corners. In practice, an elongated water outlet trough provides the best performance.

[0009] Preferably, the first and second water outlet channels are interconnected. This interconnection ensures that both water outlet channels can be completed in a single process during production, reducing production costs.

[0010] Preferably, the outer brush disk is further provided with multiple arc-shaped plates, the vertical projection of which is tangent to the circular cavity. The arc-shaped plates are used to increase the overall strength of the outer brush disk and are usually located on the inner surface of the outer brush disk.

[0011] Preferably, the inner brush disk has an inner shaft locking block at its center; the outer brush disk is fixed on the outer shaft, the inner brush disk is fixed on the inner shaft by a connector, and the inner brush disk is installed in the cavity position corresponding to the outer brush disk.

[0012] Preferably, corresponding baffles are provided above the first and second water outlet channels. This prevents water entering the brush plate from flowing directly out of the water outlet channels.

[0013] Preferably, the cleaning disc is installed in a sweeper, floor cleaner, electric cleaning brush, industrial sweeping robot, household sweeping robot, or polishing machine.

[0014] The present invention also includes an electric cleaning device equipped with the aforementioned cleaning disc. The electric cleaning device may be a sweeper, a floor cleaner, an electric cleaning brush, an industrial sweeping robot, a household sweeping robot, or a polishing machine.

[0015] The present invention also includes an electric cleaning device equipped with any of the above-mentioned cleaning discs.

[0016] Due to this structure, compared with existing technologies, the combination of the first and second water outlet channels in this invention improves the stress on the outer brush plate surface under high pressure while increasing the water output. If conventional water outlets are thickened and lengthened, the entire brush plate surface is prone to cracking and deformation after prolonged exposure to high-pressure water flow. This invention, however, adds a second water outlet channel, which can adjust the force of the water flow on the outer brush plate, preventing deformation and also increasing the upper limit of the inlet water pressure.

[0017] After use, the added second water outlet ensures that sewage is fully discharged, achieving the effect of cleaning the inside of the brush plate without disassembling the cleaning plate.

[0018] The cleaning disc has bristle fixing holes, where bristles are typically secured by wires or other means. Water from the outlet channel wets the bristles before cleaning, achieving a better cleaning effect. The inner brush disc is located at the center of the outer brush disc, and the inner and outer brush discs rotate synchronously in opposite directions, significantly improving water output and cleaning efficiency, while also stabilizing the cleaning disc during operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the outer side structure of the outer brush plate of a cleaning disc provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the side structure of the external brush disk;

[0021] Figure 3 This is a schematic diagram of the inner side structure of the outer brush disk;

[0022] Figure 4 This is a 3D schematic diagram of the external brush disk;

[0023] Figure 5 This is a schematic diagram of the inner brush disk structure of a cleaning disc provided in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the side structure of the internal brush disk;

[0025] Figure 7 This is a cross-sectional view of the overall structure of a cleaning tray provided in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the overall structure of a cleaning tray provided in an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] like Figures 1-4 as well as Figure 7 As shown, the cleaning disc described in this invention includes an outer brush disc 1 and an inner brush disc 2. The outer brush disc 1 has two surfaces, namely an outer surface and an inner surface, wherein the outer surface is the surface that matches and contacts the inner brush disc 2, and faces downwards in actual use.

[0029] The outer brush plate 1 is provided with a cavity for accommodating the inner brush plate; at least two first water outlet channels 6 are distributed circumferentially at intervals at the bottom of the cavity 3, the first water outlet channels 6 extend from the edge of the bottom of the cavity 3 towards the center, and a second water outlet channel 8 for cleaning the cavity 3 is provided between two adjacent first water outlet channels 6. The second water outlet channel 8 also serves to increase the water flow rate without reducing the strength of the bottom of the cavity 3.

[0030] The cavity 3 includes a bottom surface and a side wall 15. The second water outlet channel 8 is disposed on the bottom surface of the cavity 3 and located at the junction of the bottom surface and the side wall 15. Viewed from the inner side of the outer brush plate, after the water flows into the inner side of the outer brush plate 1, the water flows between the brush plates due to the rotation of the outer brush plate 1 and the inner brush plate 2. The cavity 3 has an outer shaft connection hole; 12 first water outlet channels 6 are formed on the cavity 3 with the outer shaft connection hole as the center, and a second water outlet channel 8 is provided between two adjacent first water outlet channels 6 along the edge of the cavity; the outward part is provided with bristle fixing holes 13; each bristle fixing hole 13 corresponds to fixing a bundle of bristles.

[0031] In this embodiment, both the first water outlet channel 6 and the second water outlet channel 8 are strip-shaped water outlet troughs, and they are connected to each other. This helps to reduce the number of processes during production.

[0032] An inner baffle 7 is provided on one side of the first water outlet channel 6. The inner baffle 7 is closely attached to the first water outlet channel 6, and its length is greater than the length of the first water outlet channel 6. In order to better control the water flow during use, the inner baffle 7 of the concave cavity 3 is arc-shaped, and its length is 3 / 4 to 2 / 3 of the diameter of the circle in which the concave cavity 3 is located. It should be noted that the inner baffle 7 is provided in the concave cavity 3 on both the inner and outer sides of the outer brush plate 1.

[0033] As shown in the diagram, a blocking strip 14 is provided above the first water outlet channel 6 and the second water outlet channel 8 on the inner side of the outer brush plate 1. The blocking strip 14 is strip-shaped and is typically located at the top of the inner baffle 7 and the side wall 15 on the inner side of the outer brush plate 1. The blocking strip 14 fully covers the first water outlet channel 6 and the second water outlet channel 8. Water enters the outer brush plate 1 from the inner side. Without the blocking strip 14, some water might flow directly out of the first water outlet channel 6 or the second water outlet channel 8 without sufficient rotation. This would cause dripping during use, significantly affecting the performance. The addition of the blocking strip 14 prevents this from happening.

[0034] During operation, due to the centrifugal force caused by rotation and the blocking effect of the inner baffle 7, part of the water flows out from the first water outlet channel 6, while the other part is blocked by the side wall 15 between the concave cavity 3 and the outward extension and flows out from the second water outlet channel 8.

[0035] The outer brush plate 1 has multiple arc-shaped pieces 5 on its outward-extending portion, the projection of which is tangent to a circular cavity 3. The arc-shaped pieces 5 enhance the overall strength of the outer brush plate 1. The bristle fixing holes 13 are arranged in a ring. This ensures that the water outlet and cleaning plate structures are structurally compatible. The outward-extending portion has four ring-shaped bristle fixing holes 13, completely covering the entire surface of the outward-extending portion. In practice, when installing different models of cleaning equipment, installers can selectively fix the bristles in designated bristle fixing holes 13 to achieve different effects.

[0036] like Figure 5 , Figure 6 As shown, the inner brush disk 2 includes a disk body. The radius of the disk body is the same as that of the cavity 3 of the outer brush disk 1. The disk body is also uniformly provided with bristle fixing holes 13, and the center of the disk body is provided with an inner shaft locking block 9, which is used to match and position with the inner shaft 12.

[0037] The outer brush disk 1 is fixed on the outer shaft 11, and the inner brush disk 2 is fixed on the inner shaft 12 by the connector 10. The inner brush disk 2 is installed in the cavity 3 corresponding to the outer brush disk 1.

[0038] In other embodiments, either or both of the first water outlet channel 6 or the second water outlet channel 8 are configured as a plurality of evenly arranged water outlet holes. This can also increase the water output while ensuring the strength of the brush plate, but the processing cost is slightly higher and the water output is relatively less than that of a strip-shaped water outlet trough during use. The actual opening volume of the first water outlet channel 6 is inversely proportional to its number, and should not exceed 24. Too many first water outlet channels 6 will affect the overall strength of the outer brush plate 1.

[0039] Regardless of the implementation method described above, in actual use, simply install the cleaning tray onto the corresponding cleaning equipment, such as... Figure 7 , Figure 8 As shown, the outer brush plate 1 and the inner brush plate 2 are fixed on different shafts, but after fixing, the outward portion of the outer brush plate 1 and the inner brush plate 2 are on the same plane. The outer brush plate 1 and the inner brush plate 2 rotate synchronously in opposite directions during use. Existing cleaning equipment uses a single brush plate or multiple brush plates rotating in the same direction, which causes the reaction force during cleaning to cause displacement of the entire cleaning equipment. Even heavier cleaning equipment may experience unstable control. In this invention, the inner brush plate 2 and the outer brush plate 1 rotate synchronously in opposite directions, and the reaction forces generated when they come into contact with the ground during cleaning cancel each other out, making the entire cleaning plate exceptionally stable. In particular, with the sufficient water output from the first water outlet channel 6 or the second water outlet channel 8, the bristles are sufficiently wetted, further reducing friction during the cleaning process. During rotation, the water in the cleaning equipment is evenly distributed in the cavity 3 under centrifugal force, and the water flow forms small vortices in the space between adjacent inner baffles 7, eventually being thrown out from the first water outlet channel 6 and the second water outlet channel 8. The relatively high linear velocity of the outward-spreading part results in a larger wetted area corresponding to the splashed water, while the amount of water per unit area is reduced. The splashed water is more likely to wet the bristles first, ensuring that water does not accumulate on the surface of the object being cleaned after use.

[0040] Furthermore, this structure allows the two brush discs to rotate in the same direction at different speeds. Regardless of the rotation speed, it ensures uniform water output, guaranteeing the effectiveness of the cleaning discs.

[0041] This invention is primarily used in electric cleaning equipment, such as sweepers or floor scrubbers. These electric cleaning devices have varying water output requirements depending on the specific needs. For relatively clean floors, it's sufficient to keep the surface just moist for easy cleaning, without leaving any standing water afterward. The brush disc provided by this invention ensures a uniform and continuous water flow even with a low flow rate, and the limited actual water output perfectly meets this requirement. For environments with accumulated dirt, a larger water output is needed; this can be achieved by simply increasing the water flow at the outlet channels. The separate design of the first outlet channel 6 and the second outlet channel 8 ensures that even with increased water pressure, the overall strength of the brush disc is sufficient to prevent deformation or breakage due to excessive water pressure. This also results in more stable operation.

[0042] After use, the cleaning disc also needs to be cleaned. During the cleaning process, only a small amount of water containing detergent needs to be added when the disc is filled, and it is rotated at a high speed. Under the action of high-speed rotation, the water remains in the cleaning disc for a longer period due to centrifugal force, making it less likely to flow out of the outlet channel. Furthermore, the liquid can effectively rinse any part of the cleaning disc during rotation, avoiding cleaning dead spots. After thorough cleaning, simply reduce the rotation speed, and the water will naturally flow out from the first outlet channel 6 and the second outlet channel 8. Without the second outlet channel 8, some wastewater would remain in the cleaning disc after cleaning, affecting the actual cleaning effect. The entire process of this invention does not require disassembling the cleaning disc, making it very convenient.

[0043] The present invention also includes an electric cleaning device with the aforementioned cleaning disc, such as a sweeper or floor scrubber. Depending on the device, bristles or other cleaning accessories are fixed in the bristle fixing holes 13. The most common choice is to fix the bristles with wire, which is simple in structure, low in cost, and easy to maintain. Alternatively, a matching component with fixed bristles or cleaning cotton can be selected, installed inside the outer brush disc, with the bristles or cleaning cotton extending from the bristle fixing holes 13 for cleaning operations.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cleaning disc, comprising an outer brush disc; The outer brush disk is provided with a cavity for accommodating the inner brush disk; at least two first water outlet channels are circumferentially spaced at the bottom of the cavity, and the first water outlet channels extend from the edge of the bottom of the cavity towards the center, characterized in that... A second water outlet channel for cleaning the concave cavity is provided between two adjacent first water outlet channels; The cavity includes a bottom surface and a side wall, and the second water outlet channel is disposed on the bottom surface of the cavity and located at the junction of the bottom surface and the side wall; The first and second water outlet channels are equipped with corresponding blocking strips.

2. The cleaning tray as described in claim 1, characterized in that, An inner baffle is provided on one side of the first water outlet channel. The inner baffle is close to the first water outlet channel and its length is greater than the length of the first water outlet channel.

3. The cleaning tray as described in claim 1, characterized in that, The first water outlet channel is a single water outlet trough or multiple consecutive water outlet holes; the second water outlet channel is also a single water outlet trough or multiple consecutive water outlet holes.

4. The cleaning tray as described in claim 1 or 3, characterized in that, The first and second water outlet channels are interconnected.

5. The cleaning tray as described in claim 1, characterized in that, The outer brush plate is also provided with multiple arc-shaped pieces, the vertical projection of which is tangent to the circular cavity.

6. The cleaning tray as described in claim 1, characterized in that, The inner brush disk is provided with an inner shaft locking block at its center; the outer brush disk is fixed on the outer shaft, and the inner brush disk is fixed on the inner shaft by a connector, and the inner brush disk is installed in the cavity position corresponding to the outer brush disk.

7. The cleaning tray as described in any one of claims 1-3, characterized in that: The cleaning disc is installed in sweepers, floor cleaners, electric cleaning brushes, industrial sweeping robots, household sweeping robots, and polishing machines.

8. An electric cleaning device, characterized in that: The electric cleaning equipment is equipped with a cleaning disc as described in any one of claims 1-7, and includes a sweeper, a floor cleaner, an electric cleaning brush, an industrial sweeping robot, a household sweeping robot, and a polishing machine.

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