Guard plate assembly, cleaning assembly and cleaning head

Abstract

The invention discloses a guard plate assembly, a cleaning assembly and a cleaning head, the guard plate assembly comprises a guard plate and a scraper, and the guard plate comprises a guard plate body, a wringing strip and a filter plate; the protection plate body is detachably connected to a cleaning head shell from the arc-shaped inner side to the outside. The wringing strip and the filter plate extend from the protection plate body to the cleaning roller, penetrate through the two ends of the protection plate body and continuously abut against the cleaning roller; the filter plate is provided with a plurality of racks which are at least partially propped against the cleaning roller and are uniformly distributed along the axial direction of the cleaning roller; a filter space is formed between the filter plate and the wringing strip, the filter plate discharges garbage out of the filter space, and the guard plate reduces the movement range of solid garbage through the arrangement of the filter plate, and prevents the solid garbage clamped in the water tank from moving in a large range in the radial and axial directions of the cleaning roller to scratch the surface of the cleaning roller; the wringing strips extending from the protection plate body to the cleaning roller and the filter plates jointly form an arch-shaped rigid reinforcing structure penetrating through the protection plate body in the axial direction of the cleaning roller, and the cleaning roller can be prevented from being damaged due to external force impact.

Description

[0001] This application is a divisional application of Chinese patent application No. 202310497000.6, and invention name is “A guard plate, a cleaning assembly and a cleaning head”, the contents of which are incorporated herein by reference. Technical Field

[0002] The invention relates to the technical field of cleaning equipment, and in particular to a guard plate assembly, a cleaning assembly and a cleaning head. Background Art

[0003] A floor scrubber is a cleaning machine suitable for cleaning hard floors while sucking out wastewater and taking it away from the site. It includes a cleaning head and a body assembly. The cleaning head includes a cleaning roller assembly for cleaning ground garbage and a brush assembly for sweeping the surface of the cleaning roller assembly. The surface of the cleaning roller assembly is provided with a water-absorbing foam cleaning roller, which needs to be continuously rinsed when the cleaning roller wipes the ground. While the cleaning roller assembly cleans the ground by rotating at high speed, the brush assembly sweeps the surface of the cleaning roller assembly and sweeps the garbage adhered to the cleaning roller assembly into the garbage box under the brush assembly. However, it is difficult for the brush assembly to sweep the surface of the cleaning roller assembly at all angles, and some garbage is strongly adhered and cannot be swept away by the brush assembly alone.

[0004] A squeezing bar is installed in the cleaning head shell for squeezing out the sewage absorbed by the surface of the cleaning roller. Some solid waste will stick to the surface of the cleaning roller and rotate at high speed with the cleaning roller assembly. When passing through the squeezing bar, the solid waste will be blocked by the squeezing bar in the water trough formed by the squeezing bar and the cleaning head shell, and move back and forth with the flow of water in the water trough. At the same time, although the cleaning roller is protected by the cleaning head shell, the rigidity of the part of the cleaning head shell that protects the cleaning roller increased by the detachable squeezing bar is not enough to resist the impact of external force on the cleaning head. Users often hit obstacles when using the floor scrubber, which causes the surface of the cleaning roller to be impacted and scraped by the inner wall of the shell during high-speed operation and is often damaged. Summary of the invention

[0005] In order to strengthen the strength of the cleaning head housing that protects the cleaning roller and to prevent solid garbage from moving back and forth in the water tank with the flow of water in the water tank and scratching the surface of the cleaning roller, the present invention provides a guard plate assembly, a cleaning assembly and a cleaning head. The technical solution proposed by the present invention is as follows:

[0006] In a first aspect, an embodiment of the present invention provides a guard plate assembly for strengthening the strength of a portion of a cleaning head housing that protects a cleaning roller. The guard plate assembly includes a guard plate, and the guard plate includes:

[0007] The guard plate body is arc-shaped and protects the cleaning roller. The guard plate body is directed toward the cleaning roller and is provided with a water squeezing strip that is interference-fitted with the cleaning roller.

[0008] A filter plate extends from the guard plate body toward the cleaning roller, passes through both ends of the guard plate body, and is provided with a plurality of racks evenly distributed along the axial direction of the cleaning roller and at least partially abutting against the cleaning roller;

[0009] As the cleaning roller rotates, a filtering space is formed between the filtering plate and the water squeezing bar, and the filtering plate excludes garbage from the filtering space.

[0010] In one or some optional embodiments, the guard plate body is detachably connected to the cleaning head housing from the arc-shaped inner side outward.

[0011] In one or some optional embodiments, the water squeezing strip passes through both ends of the guard plate body and continuously abuts against the cleaning roller.

[0012] In one or some optional embodiments, the middle section of the water squeezing strip is straight, the two end sections of the water squeezing strip are arc-shaped and extend toward the filter plate respectively, and the interference fit between the water squeezing strip and the cleaning roller gradually increases from the middle to the two ends.

[0013] In one or some optional embodiments, the middle section of the filter plate is in a straight line shape, and the two end sections of the filter plate are in an arc shape and extend toward the water squeezing strips respectively.

[0014] In one or some optional embodiments, the guard plate further comprises a baffle extending downwardly from the end of the guard plate body away from the cleaning roller and away from the cleaning head housing;

[0015] The filter plate is arranged between the water squeezing strip and the baffle.

[0016] In one or some optional embodiments, the guard plate is provided with a clamping portion, a transverse rib and a clamping protrusion, and the guard plate can be clamped into the cleaning head housing through the clamping portion, the transverse rib and the clamping protrusion.

[0017] In one or some optional embodiments, the outer surface of the baffle is also evenly distributed with reinforcing ribs along the vertical direction.

[0018] In one or some optional embodiments, the end of the baffle plate horizontally extends in a direction away from the filter plate and has a fixing portion for connecting with other components.

[0019] In one or some optional embodiments, the guard plate assembly further comprises a scraper detachably connected to the guard plate body at the fixing portion;

[0020] The scraper is in contact with the cleaning roller.

[0021] In one or some optional embodiments, the scraper includes a scraper body detachably connected to the fixing portion and a water receiving portion extending from the scraper body toward the filter plate;

[0022] The water receiving portion is in contact with the cleaning roller, and at least a portion of the teeth of the rack facing downward are higher than an upper surface of the water receiving portion.

[0023] In one or some optional embodiments, the filter plate is arranged between the water squeezing bar and the water dividing bar; and a water channel is formed between the cleaning roller, the water squeezing bar, the water receiving portion and the baffle.

[0024] In one or some optional embodiments, a water inlet is provided at one end of the water trough, and a sewage outlet is provided at the other end, and the sewage outlet includes a first water outlet and a second water outlet.

[0025] In one or some optional embodiments, the two ends of the water squeezing strip converge toward the filter plate, so that the water trough is wide in the middle and gradually narrows at both ends, so that the water inlet and sewage outlet of the water trough are not too wide.

[0026] In one or some optional embodiments, the filter plate is slightly away from the water inlet and is in a gradually opening trumpet shape, the area where the filter plate is close to the first water outlet is in a gradually shrinking shape, and the areas at both ends of the water trough that are blocked outside the filter space have sufficient turbulent space.

[0027] In one or some optional embodiments, a water dividing strip is extended from the middle portion of the water receiving portion in a direction away from the cleaning roller.

[0028] In one or some optional embodiments, the water dividing strip divides the water channel into a primary water channel and a secondary water channel.

[0029] In one or some optional embodiments, the water inlet is provided at one end of the primary water tank, and the first water outlet is provided at the other end;

[0030] The second water outlet is arranged at one end of the secondary water tank away from the water inlet.

[0031] In one or some optional embodiments, the scraper further includes a pre-scraping portion extending downward from the scraper body away from the filter plate and abutting against the cleaning roller.

[0032] In one or some optional embodiments, the distance between the filter plate and the water squeezing bar is greater than the tooth gap between the two racks.

[0033] In one or some optional embodiments, the tooth gap between the two racks is evenly distributed on the filter plate along the axial direction of the cleaning roller.

[0034] In one or some optional embodiments, a viewing window is provided on the guard plate body;

[0035] The window is arranged above the filtering space.

[0036] In one or some optional embodiments, the guard plate is used to reinforce the strength of the portion of the cleaning head housing that protects the cleaning roller.

[0037] In the second aspect, an embodiment of the present invention provides a cleaning assembly, which is applied to a cleaning head. The cleaning assembly includes a guard plate assembly as described in the first aspect; along the rotation direction of the cleaning roller, the water receiving part, the filter plate, and the water squeezing bar are in contact with the cleaning roller in sequence, and the garbage on the surface of the cleaning roller can be cleaned in multiple ways.

[0038] In the third aspect, an embodiment of the present invention provides a cleaning head, which includes a cleaning head shell, a sewage tank arranged on the cleaning head shell, a cleaning roller arranged at the front of the cleaning head shell, a brush assembly arranged in the cleaning head shell, a garbage box arranged directly below the brush assembly, and a guard plate assembly as described in the first aspect.

[0039] In a fourth aspect, an embodiment of the present invention provides a cleaning head, which includes a cleaning head shell, a sewage tank arranged on the cleaning head shell, a cleaning roller arranged at the front of the cleaning head shell, a brush assembly arranged in the cleaning head shell, a garbage box arranged directly below the brush assembly, and a cleaning assembly as described in the second aspect.

[0040] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0041] Compared with the prior art which only relies on the sweeping of the brush assembly and the water flow to flush the surface of the cleaning roller, the guard plate assembly provided in the embodiment of the present invention blocks the solid waste adhered to the surface of the cleaning roller outside the filter space by arranging a filter plate on the guard plate assembly.

[0042] The guard plate assembly provided in the embodiment of the present invention can just catch the particle garbage that cannot pass through the tooth groove gap through the gap between the rack of the filter plate and the water dividing strip of the scraper plate and the tooth groove gap between the racks, thereby reducing the movement range of the solid garbage, preventing the solid garbage stuck in the water tank from moving over a large range in the radial and axial directions of the cleaning roller and scratching the surface of the cleaning roller, reducing the working noise and improving the use experience;

[0043] The guard plate assembly provided in the embodiment of the present invention, by arranging evenly distributed racks on the filter plate, allows the filter plate to restrict the movement of garbage without affecting the passage of water in the water tank, and can clamp some smaller solid garbage between the racks, so that these solid garbage cannot move in the water tank along the axial direction of the cleaning roller, further avoiding scratches on the surface of the cleaning roller and the generation of noise.

[0044] The guard plate assembly provided in the embodiment of the present invention can realize multiple cleaning of the garbage rolled up on the surface of the cleaning roller through the guard plate and the scraper detachably connected to the guard plate. Along the rotation direction of the cleaning roller, the pre-scraping part of the scraper, the water receiving part of the scraper, the filter plate and the water squeezing strip are elastically abutted against the cleaning roller in sequence, and the garbage on the surface of the cleaning roller can be cleaned multiple times.

[0045] The guard plate assembly provided in the embodiment of the present invention arranges the filter plate to have a straight middle section and arc-shaped end sections extending toward the water squeezing bar, so that the filter plate is slightly away from the water inlet and the first water outlet of the cleaning head, thereby avoiding garbage blockage and ensuring smooth water flow.

[0046] Compared with the prior art, the guard plate assembly provided in the embodiment of the present invention has a guard plate that is detachably connected to the cleaning head shell from the inside of the cleaning head shell to the outside, which increases the strength of the portion of the entire cleaning head shell that protects the cleaning roller. The water squeezing strip and filter plate extending from the middle of the arc-shaped inner wall of the guard plate body toward the cleaning roller together form an arched rigid reinforcement structure that penetrates the guard plate body along the axial direction of the cleaning roller. In addition, the strength of the integrally formed guard plate overall structure and the strength of the outer shell of the cleaning head shell that protects the cleaning roller, the superposition of the strength of the two detachable and separable integral structural components further increases the strength of the portion of the entire cleaning head shell that protects the cleaning roller, allowing the cleaning head to withstand more external force impacts without damaging the cleaning roller.

[0047] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0048] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0050] Figure 1 It is a schematic diagram of the cross-sectional structure of the centering of the guard plate in the guard plate assembly of the present invention;

[0051] Figure 2 It is a schematic diagram of the three-dimensional structure of the guard plate in the guard plate assembly of the present invention;

[0052] Figure 3 A schematic diagram of the three-dimensional structure of the guard plate in the guard plate assembly of the present invention from another viewing angle;

[0053] Figure 4 It is a schematic diagram of the three-dimensional structure of the guard plate in the guard plate assembly of the present invention from another viewing angle;

[0054] Figure 5 A schematic diagram of the three-dimensional structure of a cleaning head provided with a guard plate assembly according to the present invention;

[0055] Figure 6 for Figure 5 A-axis planing view;

[0056] Figure 7 for Figure 5 Middle B-axis planing view;

[0057] Figure 8 A front view of a cleaning head provided with a guard assembly according to the present invention;

[0058] Fig. 9 for Figure 8 Middle C-axis planing view;

[0059] Fig.10 for Fig. 9 A partial enlarged view of the middle E part;

[0060] Fig.11 for Figure 8 Middle D-axis planing view;

[0061] Fig.12 for Fig.11 A partial enlarged view of the middle F part;

[0062] Fig.13 for Fig.11 A partial enlarged view of the middle G section;

[0063] Reference numerals:

[0064] 1. Cleaning head;

[0065] 10. Guard plate;

[0066] 100, guard plate body; 102, filter plate; 1021, rack; 103, baffle; 104, water squeezing strip; 105, window; 106, clamping part; 107, transverse convex rib; 108, fixing part; 109, clamping protrusion; 110, vertical reinforcing rib;

[0067] 20, scraper; 200, scraper body; 210, water receiving part; 211, water dividing strip; 200a, reinforcement frame; 220, pre-scraping part;

[0068] 30. water trough; 31. primary water trough; 32. secondary water trough; 33. filtering space; 34. first water outlet; 35. second water outlet; 36. water inlet;

[0069] 40. Sewage tank; 401. Vent;

[0070] 50. Brush assembly;

[0071] 60, cleaning head housing; 600, housing body; 601, outer shell; 602, clean water channel; 603, sewage channel; 604, fuselage connection part;

[0072] 70. Cleaning roller;

[0073] 80. Trash can. DETAILED DESCRIPTION

[0074] The claims of the present invention are further described in detail below in conjunction with specific embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments proposed by ordinary technicians in this field before making creative work also fall within the scope of protection of the present invention.

[0075] It should be understood that, in the description of the embodiments of the present invention, all directional indication terms, such as "up", "down", "left", "right", "front", "back", etc., indicate the orientation or position relationship based on the orientation, position relationship shown in the drawings or the orientation or position relationship in which the invented product is usually placed when in use, which is only for the convenience of simplifying the description of the present invention, and does not expressly or imply that the device, element or component referred to must have a specific orientation and a specific orientation structure, and should not be understood as a limitation on the present invention. It is only used to explain the relative position relationship, movement, etc. between the components shown in the drawings. When the specific posture changes, the directional indication may also change accordingly.

[0076] In addition, ordinal numbers such as "first" and "second" in the present invention are only used for the purpose of distinction, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. The features defined as "first" and "second" can explicitly or implicitly indicate at least one of the technical features. In the description of the present invention, "multiple" means at least two, that is, two or more, unless otherwise clearly defined; "at least one" means one or one and more.

[0077] The inventor found that when the floor scrubber is working, its cleaning roller assembly will adhere to solid waste. Some solid waste with strong adhesion is difficult to be cleaned by the brush assembly and will get stuck in the water tank when passing through the water tank. For example, the patent with publication number CN212326304U discloses a cleaning device, whose cleaning head includes a shell, a sewage tank and a cleaning roller installed on the shell, a water pressing plate and a scraper assembly are provided on the shell, one end of the water pressing plate interferes with the cleaning roller, and the scraper assembly includes a friction part and a drainage part, the drainage part includes a water squeezing bar and a water receiving bar, and the friction part and the water squeezing bar interfere with the cleaning roller respectively. In this cleaning device, when the cleaning roller rotates at a high speed, thin and sharp solid garbage such as melon seed shells and thin and soft solid garbage such as candy wrappers will be squeezed along the surface of the cleaning roller through the water receiving strip under the drive of the cleaning roller but will be blocked in the water tank by the water squeezing strip. The thin and sharp solid garbage will move back and forth in the water tank, scratching the surface of the cleaning roller, causing damage to the surface of the cleaning roller; although the thin and soft solid garbage will be stuck in the water tank and will not easily scratch the surface of the cleaning roller, it will generate a lot of noise in the water tank.

[0078] Therefore, how to prevent slightly larger solid waste stuck in the water tank from scratching the surface of the cleaning roller and generating noise is a technical problem that needs to be solved urgently. At the same time, the rigidity of the part of the cleaning head shell protecting the cleaning roller added by the detachable squeezing strip in the prior art is not enough to resist the impact of external forces on the cleaning head, which is also a technical problem that needs to be solved urgently. Based on this, the present invention provides a guard plate, a cleaning assembly and a cleaning head, which are described below through specific embodiments.

[0079] In the first aspect, the present embodiment provides a guard plate assembly (not shown in the drawings), which includes a guard plate 10 and a scraper 20 detachably connected to the guard plate 10. The guard plate 10 is applied to the cleaning head 1 to strengthen the strength of the cleaning head housing 60 to protect the cleaning roller 70. Figures 1 to 4 , Figure 7As shown, the guard plate 10 comprises a guard plate body 100, a water squeezing strip 104 and a filter plate 102; the guard plate body 100 is arc-shaped to protect the cleaning roller 70, and is detachably connected to the cleaning head housing 60 from the inner side of the arc of the guard plate body 100 to the outside; the water squeezing strip 104 extends from the guard plate body 100 toward the cleaning roller 70, and the water squeezing strip 104 passes through both ends of the guard plate body 100 and continuously elastically abuts against the cleaning roller 70; the filter plate 102 extends from the guard plate body 100 to the outside. 00 extends toward the cleaning roller 70, the filter plate 102 passes through both ends of the guard plate body 100, and the filter plate 102 is provided with a plurality of racks 1021 uniformly distributed along the axial direction of the cleaning roller 70, which are at least partially elastically abutted against the cleaning roller 70; wherein, in the use state, a filter space 33 is formed between the filter plate 102 and the water squeezing bar 104, and the filter plate 102 is suitable for blocking garbage adhering to the surface of the cleaning roller 70, and limiting the garbage from being excluded from the filter space 33.

[0080] In this embodiment, the cleaning roller 70 of the cleaning head 1 cleans the ground by high-speed rotation, and the filter plate 102 elastically abuts against the cleaning roller 70 assembly. The surface of the cleaning roller 70 is first brushed by the brush assembly 50 built into the cleaning head housing 60 of the cleaning head 1, and most of the garbage is swept off. Then, the residual solid garbage with strong adhesion is blocked outside the filter space 33 by the filter plate 102. The distance between the filter plate 102 and the water squeezing bar 104 is greater than the tooth gap between the two racks 1021. After passing through the tooth gap between the two racks 1021, clean water, sewage and fine particles of garbage will not accumulate in the filter space 33. The tooth gap between the two racks 1021 is uniformly distributed in the filter plate 102 along the axial direction of the cleaning roller 70. Even if some tooth gaps are blocked by accumulated fine particles of garbage and / or sticky garbage over time, clean water, sewage and fine particles of garbage pass through other unblocked tooth gaps, thereby preventing fine particles of garbage and / or sticky garbage from accumulating in the entire filter space 33.

[0081] In this embodiment, refer to Figures 1 to 4 As shown, the filter plate 102 is arranged between the water squeezing bar 104 and the baffle 103, and a plurality of evenly distributed racks 1021 are arranged at the lower part of the filter plate 102. There is a narrow gap between the racks 1021, and the clean water or sewage in the water tank can pass through the gap between the racks 1021 without obstacles. Some solid garbage with smaller sizes will be stuck in the gap between the racks, and not only cannot move in the radial direction of the cleaning roller 70, but also cannot move in the axial direction of the cleaning roller 70, further avoiding the surface of the cleaning roller 70 from being scratched. The gap is in the shape of a long strip, and even if there is solid garbage stuck in the gap, it is difficult to be completely blocked by the solid garbage. In addition, there are a large number of racks 1021, and a large number of gaps will not be blocked, so it will not affect the passage of water.

[0082] In the present embodiment, compared with the prior art which only relies on the sweeping of the brush assembly and the water flow to flush the surface of the cleaning roller, the guard plate 10 of the present invention blocks the solid waste adhered to the surface of the cleaning roller 70 outside the filter space 33 by setting a filter plate 102, thereby reducing the movement range of the solid waste, and preventing the solid waste stuck in the water tank from moving in a large range in the radial direction of the cleaning roller 70 and scratching the surface of the cleaning roller 70, thereby reducing the working noise and improving the use experience; by setting evenly distributed racks 1021 on the filter plate 102, the filter plate 102 does not affect the passage of water in the water tank while restricting the movement of the solid waste, and can hold some smaller solid waste between the racks, so that these solid wastes cannot move in the water tank at all, further avoiding the scratching of the surface of the cleaning roller 70 and the generation of noise.

[0083] In this embodiment, compared with the prior art, the guard plate 10 that is detachably connected to the cleaning head shell from the inside to the outside of the cleaning head shell increases the strength of the portion of the entire cleaning head shell 60 that protects the cleaning roller 70. The water squeezing strip 104 and the filter plate 102 that extend from the middle of the arc-shaped inner wall of the guard plate body 100 toward the cleaning roller 70 together form an arched rigid reinforcement structure that penetrates the guard plate body 100 along the axial direction of the cleaning roller 70. In addition, the strength of the overall structure of the integrally formed guard plate 10 and the strength of the outer shell 601 of the cleaning head shell 60 that protects the cleaning roller 70, the superposition of the strength of the two integral structural components that can be detached from each other further increases the strength of the portion of the entire cleaning head shell 60 that protects the cleaning roller 70, which can allow the cleaning head 1 to withstand more external force impacts without damaging the cleaning roller 70.

[0084] It should be noted that the solid waste described in the present invention specifically refers to granular solid waste, such as fruit peels, melon seed shells, rice grains, candy wrappers, etc.

[0085] In a specific embodiment, referring to Figures 2 to 4 , Figures 9 to 11 As shown, the middle section of the water squeezing strip 104 is straight, and the two end sections of the water squeezing strip 104 are arc-shaped and extend toward the filter plate 102 respectively. The interference fit between the water squeezing strip 104 and the cleaning roller 70 increases gradually from the middle to the two ends. Figure 2 and Fig.11As shown, the middle section of the water squeeze bar 104 is straight, and the two end sections are arc-shaped and extend to the two side edges of the cleaning head 1 respectively, and the two ends of the water squeeze bar 104 are gathered toward the filter plate 102, so that the water channel 30 is wide in the middle and gradually narrows at the two ends, so that the water inlet 36 and the sewage outlet (34, 35) of the water channel 30 will not be too wide to avoid water leakage; and when cleaning the slope surface, when the cleaning head 1 needs to be tilted, the water flow will not flow completely to one end of the water channel 30, but only slightly tilted in the water channel, so that the normal operation of the water flow channel inside the floor scrubber can be maintained. The interference fit between the water squeeze bar 104 and the cleaning roller 70 gradually increases from the middle to the two ends, so that the water squeeze bar 104 can elastically abut the cleaning roller 70 more tightly in the area closer to the two ends, and the area is less likely to leak due to excessive water pressure.

[0086] In a specific embodiment, referring to Figures 2 to 4 , Figures 9 to 11 As shown, the middle section of the filter plate 102 is in a straight line shape, and the two end sections of the filter plate are in an arc shape and extend toward the water squeezing strip 104. The protective plate 10 provided by the embodiment of the present invention is configured such that the middle section of the filter plate 102 is in a straight line shape, and the two end sections are in an arc shape and extend toward the water squeezing strip 104, so that the filter plate 102 slightly away from the water inlet 36 of the cleaning head 1 is in a gradually opening trumpet shape, and the area of ​​the filter plate 102 close to the first water outlet 34 is in a gradually shrinking closing shape, so that the two ends of the water trough 30 are blocked outside the filter space 33 and have sufficient turbulent space, thereby avoiding the blockage of fine particles and / or sticky garbage and ensuring smooth water flow.

[0087] In this embodiment, refer to Figures 9 to 11 As shown, the filter plate 102 extends downward from the guard plate body 100 until it abuts against the cleaning roller 70. The middle section of the filter plate 102 is in a straight line shape, and the two end sections are in an arc shape and extend toward the water squeezing strip 104 respectively. The two ends of the filter plate 102 are respectively at a certain distance from the water inlet 36 and the first water outlet 34, so that the two ends of the primary water tank 31 are unobstructed and open. On the one hand, it prevents clean water from being blocked when entering the primary water tank 31 from the water inlet 36, and on the other hand, it prevents solid garbage from being blocked between the filter plate 102 and the first water outlet 34.

[0088] In a specific embodiment, referring to Figures 1 to 4 , Figure 7 , Fig. 9 , Fig.10As shown, the guard plate 10 also includes a baffle 103 extending downward from the end of the guard plate body 100 away from the cleaning roller 70 and away from the cleaning head housing 60; the filter plate 102 is arranged between the water squeezing bar 104 and the baffle 103. The guard plate 10 also includes a guard plate body 100, a baffle 103 and a water squeezing bar 104, and the water squeezing bar 104 and the baffle 103 extend downward from the inner surface of the guard plate body 100 toward the cleaning roller 70 respectively. The end of the water squeezing bar 104 abuts against the cleaning roller 70. Since the surface of the cleaning roller 70 is relatively soft, the end of the water squeezing bar 104 is at least partially embedded in the surface of the cleaning roller 70, squeezing the surface of the cleaning roller 70, thereby squeezing out the sewage accumulated on the surface of the cleaning roller 70. Refer to Figure 1 , Figure 2 , Figure 7 , Fig. 9 , Fig.10 As shown, the baffle 103 can be used to conveniently clamp the guard plate 10 from the inside of the cleaning head housing 60 to the outside. The guard plate 10 can be clamped into the cleaning head housing 60 through the clamping portion 106, the transverse rib 107 and the clamping protrusion 109. Figure 3 , Figure 4 As shown, the arc-shaped inner side wall of the guard plate 10 facing the cleaning roller 70 is also provided with a plurality of screw holes (not shown in the drawings) for driving fastening screws to further fix the guard plate 10 to the cleaning head housing 60. The baffle plate 103 can also be used to continue connecting other components. Figure 3 , Figure 4 As shown, the outer surface of the baffle 103 is evenly distributed with reinforcing ribs 110 along the vertical direction to increase the strength of the baffle 103 when it is snapped into the interior of the cleaning head housing 60, so as to help the baffle 103 withstand greater external impact forces.

[0089] In a specific embodiment, referring to Figure 7 , Fig. 9 , Fig.10 As shown, the end of the baffle 103 extends horizontally in a direction away from the filter plate 102 to have a fixing portion 108 for connecting other components. It should be noted that the horizontal extension mentioned here only means that under normal circumstances, the plane jointly determined by the two auxiliary wheels and the two force wheels of the floor scrubber is a large plane with a cleaning surface, and the bottom surface of the fixing portion 108 can be parallel to the large plane. Of course, for other purposes, those skilled in the art can also extend a fixing portion 108 for connecting other components obliquely from the end of the baffle 103 in a direction away from the filter plate 102.

[0090] In a specific embodiment, referring to Figure 7 , Fig. 9 , Fig.10As shown, the guard plate 10 further includes a scraper 20 detachably connected to the guard plate body 100 at the fixing portion 108; the scraper 20 elastically abuts against the cleaning roller 70. Along the rotation direction of the cleaning roller 70, the scraper 20 elastically abuts against the cleaning roller 70, and before the squeezing bar 104 deeply cleans the garbage on the surface of the cleaning roller 70, the scraper 20 can pre-scrape off the large particles of garbage on the surface of the cleaning roller 70, so as to prevent the large particles of garbage from damaging the surface of the cleaning roller 70 when the squeezing bar 104 scrapes and squeezes the cleaning roller 70.

[0091] In a specific embodiment, referring to Figure 7 , Fig. 9 , Fig.10 As shown, the scraper 20 includes a scraper body 200 detachably connected to the fixing part 108 and a water receiving part 210 extending from the scraper body 200 toward the filter plate 102; the water receiving part 210 elastically abuts against the cleaning roller 70, and at least a portion of the tooth tops of the rack 1021 facing downward are higher than the upper surface of the water receiving part 210. When the cleaning roller 70 rotates at a high speed, the water squeezing bar 104 squeezes out the sewage and fine particles of garbage from the surface of the cleaning roller 70, and the squeezed sewage and fine particles of garbage can be gathered to a lower place along the upper surface of the water receiving part 210 and finally discharged to the sewage channel through the water outlet of the water trough 30, and the water receiving part 210 can prevent the sewage and fine particles of garbage just squeezed out from entering the surface of the cleaning roller 70 that is about to be scraped by the water squeezing bar 104 again.

[0092] In this embodiment, the scraper 20 includes a scraper body 200 and a water receiving portion 210, one end of the water receiving portion 210 is connected to the scraper body 200, and the other end extends toward the surface of the cleaning roller 70 until it elastically abuts against the cleaning roller 70 and squeezes the surface of the cleaning roller 70. The material of the water receiving portion 210 is relatively soft, for example, it can be soft rubber, so that the cleaning roller 70 will not be scratched when the cleaning roller 70 rotates.

[0093] It should be noted that the scraper body 200 and the end of the baffle 103 are connected at the fixing portion 108, and the connection method includes but is not limited to bolt connection. For details, please refer to the records in the prior art, which will not be repeated here.

[0094] In a specific embodiment, referring to Fig.10 and Fig.11As shown, a water dividing strip 211 extends from the middle of the water receiving portion 210 in a direction away from the cleaning roller 70. One end of the water dividing strip 211 is connected to the water receiving portion 210, and the other end extends upward. When the amount of water in the water inlet 36 of the water trough 30 is small, the clean water cannot go over the water dividing strip 211, and the clean water only flows in the water trough between the water squeezing strip 104 and the water dividing strip 211; when the amount of water in the water inlet 36 of the water trough 30 is large, the clean water can go over the water dividing strip 211, and the clean water can also flow in the water trough between the baffle 103 and the water dividing strip 211.

[0095] In a specific embodiment, referring to Fig.10 As shown, the filter plate 102 is disposed between the water squeezing bar 104 and the water dividing bar 211 ; the cleaning roller 70 , the water squeezing bar 104 , the water receiving portion 210 and the baffle plate 103 form the water channel 30 .

[0096] In this embodiment, refer to Figure 7 , Fig.10 As shown, the distance between the filter plate 102 and the water squeezing strip 104 is much greater than the distance between the filter plate 102 and the water dividing strip 211. The filter plate 102 blocks the solid garbage adhered to the surface of the cleaning roller 70 from the filtering space 33. At the same time, the filter plate 102 limits the solid garbage adhered to the surface of the cleaning roller 70 to the narrow space between the filter plate 102 and the water dividing strip 211. The upper surface of the water receiving portion 210 also supports the sewage, fine particles of garbage squeezed out by the water squeezing strip 104, and the solid garbage squeezed out of the filtering space 33, thereby reducing the activity of the solid garbage. The filter plate 102 has a large range of movement, which prevents the solid garbage stuck in the water tank from moving in a large range in the radial and axial directions of the cleaning roller and scratching the surface of the cleaning roller, thereby reducing working noise and improving the sense of use; by setting evenly distributed racks 1021 on the filter plate 102, the filter plate 102 can limit the movement of garbage without affecting the passage of water in the water tank, and can hold some smaller solid garbage between the racks 1021 and between the racks 1021 and the water diversion strip 221, so that these solid garbage cannot move in the axial direction of the cleaning roller in the water tank, further avoiding scratches on the surface of the cleaning roller and the generation of noise. The distance between the filter plate 102 and the water diversion strip 21 is short, and the solid garbage cannot move in a large range in the radial direction of the cleaning roller 70 outside the filter space 33, and can only move slightly, thereby reducing the scratching of the surface of the cleaning roller 70 by the solid garbage and avoiding the surface of the cleaning roller 70 from being damaged too quickly.

[0097] In a specific embodiment, referring to Figure 7 , Figures 9 to 11As shown, the water dividing strip 211 extends upward from the middle section of the water receiving portion 210, dividing the water trough 30 into a primary water trough 31 and a secondary water trough 32. The primary water trough 31 is between the water squeezing strip 104 and the water dividing strip 211; the secondary water trough 32 is between the baffle 103 and the water dividing strip 211. The filter plate 102 is located in the primary water trough 31. The solid garbage that reaches the water trough 30 as the cleaning roller 70 rotates will not enter the secondary water trough 32 due to the obstruction of the water dividing strip 211, and the solid garbage will be restricted outside the filter space 33 due to the obstruction of the filter plate 102, so that the solid garbage will not move and scrape in a large range in the radial and axial directions of the cleaning roller 70, thereby avoiding scratches on the surface of the cleaning roller 70.

[0098] In a specific embodiment, referring to Figures 11 to 13 As shown, the first-level water tank 31 is provided with a water inlet 36 at one end and a first water outlet 34 at the other end; the second-level water tank 32 is provided with a second water outlet 35 at one end away from the water inlet 36 .

[0099] In this embodiment, refer to Figures 11 to 13 As shown, a water channel 30 is formed between the water squeezing strip 104, the water receiving portion 210, the baffle 103 and the cleaning roller 70 for passing clean water and dirty water. When the cleaning roller 70 cleans the floor by rotating at high speed, the surface of the cleaning roller 70 needs to be continuously rinsed, so clean water needs to be continuously introduced and dirty water needs to be discharged. The clean water transported to the surface of the cleaning roller 70 and the dirty water used to wash the cleaning roller 70 are both confined in the water channel 30. One end of the water channel 30 is connected to the clean water channel 602 of the cleaning head 1, and the other end is connected to the dirty water channel 603 of the cleaning head 1, forming a water circulation structure in which clean water enters from one end and dirty water exits from the other end, so that the cleaning roller 70 is always in a clean and moist state, and can clean the floor more thoroughly. Refer to Figures 11 to 13As shown, a water inlet 36 is provided at one end of the primary water tank 31, and a first water outlet 34 is provided at the other end. The end of the secondary water tank 32 away from the water inlet 36 is provided at the second water outlet 35. Clean water flows in from the water inlet 36 to wash and moisten the surface of the cleaning roller 70, and sewage flows out from the first water outlet 34 and / or the second water outlet 35. When the clean water flow rate is low, a water flow with strong fluidity can be formed in the primary water tank 31 to wash the garbage adhering to the surface of the cleaning roller 70, and the sewage and garbage will not enter the secondary water tank 32, but directly flow out from the first water outlet 34. When the clean water flow rate is high or there is water on the cleaned object (such as the ground), part of the sewage will enter the secondary water tank 32, and this part of the sewage will flow out from the second water outlet 35. Dividing the water trough 30 into a primary water trough 31 and a secondary water trough 32, on the one hand, enlarges the sewage channel 603, can adapt to the rapid rotation of the cleaning roller 70, and improves the cleaning efficiency of the cleaning device; on the other hand, solid garbage is confined outside the filter space 33, even if the primary water trough 31 is blocked by garbage, the secondary water trough 32 can still remain unobstructed.

[0100] In a specific embodiment, referring to Fig.10 As shown, the scraper 20 further includes a pre-scraping portion 220 extending downward from the scraper body 200 away from the filter plate 102 and elastically abutting against the cleaning roller 70. Along the rotation direction of the cleaning roller 70, the pre-scraping portion 220 of the scraper 20 elastically abuts against the cleaning roller 70, and before the squeezing bar 104 deeply cleans the garbage on the surface of the cleaning roller 70, the pre-scraping portion 220 of the scraper 20 can pre-scrape off the large particles of garbage on the surface of the cleaning roller 70, so as to prevent the large particles of garbage from damaging the surface of the cleaning roller 70 when the squeezing bar 104 scrapes and squeezes the cleaning roller 70.

[0101] In a specific embodiment, referring to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Fig.10 As shown, the guard plate 10 may further include a viewing window 105 .

[0102] In this embodiment, refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Fig.10As shown, the window 105 is movably arranged on the upper surface of the guard plate body 100, and is located above the filter space 33 and the secondary water tank 32. Through the window 105, the blockage of garbage in the filter space 33 and the water flow, as well as the water flow in the secondary water tank 32 can be observed, thereby improving the user experience. One side of the window 105 is hinged to the guard plate body 100; the window 105 can be opened from the other side of the window 105, and then the solid garbage stuck outside the filter space 33 can be cleaned up, which is simple to operate and convenient to clean up at any time. Obviously, the window 105 can also be movably connected to the guard plate body 100 in other ways, for example, it can be detachably arranged on the guard plate body 100, as long as it can be convenient to open the window 105. The window 105 is made of a transparent material, for example, it can be glass or transparent plastic.

[0103] In a specific embodiment, referring to Figures 1 to 4 , Figure 7 and Fig. 9 As shown, the guard body 100 is arc-shaped and is clamped to the inner wall of the cleaning head housing 60 above the cleaning roller 70 from the inside to the outside, so as to prevent garbage from splashing when the cleaning roller 70 rotates at a high speed. At least one clamping portion 106 is provided on the upper part of the guard body 100, and the at least one clamping portion 106 can be clamped to the outer shell 601 of the cleaning head housing 60 to achieve a detachable connection with the outer shell 601.

[0104] In a specific embodiment, referring to Fig.10 As shown, the scraper 20 may further include a reinforcement frame 200a, which is used to increase the rigidity of the scraper body 200 along the axial direction of the cleaning roller 70. The reinforcement frame 200a is at least partially embedded in the scraper body 200 and fixedly connected to the scraper body 200. The end of the reinforcement frame 200a away from the scraper 20 is fixedly connected to the housing 601 of the cleaning head 1, thereby fixing the scraper body 200. The connection method between the reinforcement frame 200a and the housing 601 includes but is not limited to bolt connection. For details, please refer to the records in the prior art, which will not be repeated here. Of course, the scraper body 200 can also be integrally injection molded by performing secondary injection molding on the reinforcement frame 200a.

[0105] In the second aspect, based on the same inventive concept, the present application also provides a cleaning component, which is applied to the cleaning head 1, referring to Figure 7 , Fig. 9 , Fig.10 As shown, the cleaning assembly includes the guard plate assembly as described in the first aspect; along the rotation direction of the cleaning roller 70, the pre-scraping portion 220, the water receiving portion 210, the filter plate 102, and the water squeezing bar 104 are elastically abutted against the cleaning roller 70 in sequence, and the garbage on the surface of the cleaning roller 70 can be cleaned in multiple ways.

[0106] In this embodiment, the cleaning component corresponds to the guard plate component described in the first aspect, and its specific usage process can refer to the process of applying the guard plate component described in the first aspect. The repeated parts will not be repeated here.

[0107] In this embodiment, refer to Figure 7 , Fig. 9 , Fig.10 As shown, the guard plate 10 and the scraper plate 20 are detachably connected, for example, bolted. The guard plate 10 and the scraper plate 20 abut against the cleaning roller 70 of the cleaning head 1 respectively, and a water channel 30 is formed between the baffle 103 of the guard plate 10, the water squeezing strip 104 of the guard plate 10, the scraper plate 20 and the cleaning roller 70. The scraper plate 20 includes a scraper body 200, a water receiving portion 210 and a water dividing strip 211, and the water dividing strip 211 divides the water channel 30 into a primary water channel 31 and a secondary water channel 32.

[0108] In this embodiment, the material of the scraper body 200, the water receiving part 210 and the water dividing strip 211 can be soft glue. Soft glue is not only resistant to high temperature, but also resistant to low temperature, and can be used in a larger temperature range. The chemical properties and physical and mechanical properties of soft glue change very little with temperature. Therefore, the durability of the scraper body 200, the water receiving part 210 and the water dividing strip 211 can be improved. Soft glue is not easily decomposed by ultraviolet light and ozone, so ultraviolet light disinfection of the scraper body 200, the water receiving part 210 and the water dividing strip 2111 will not affect its performance. The scraper body 200, the water receiving part 210 and the water dividing strip 211 made of soft glue have good electrical insulation properties, which can ensure the safe use of the cleaning head 1.

[0109] In this embodiment, the scraper 20 may further include a reinforcement frame 200a, which is used to increase the rigidity of the scraper body 200 along the axial direction of the cleaning roller 70. The material of the reinforcement frame 200a may be hard glue. Since hard glue has good thermal stability, fluidity, shrinkage and corrosion resistance, therefore, setting the material of the reinforcement frame 200a to hard glue can improve the strength and durability of the cleaning head 1.

[0110] In order to simplify the processing difficulty of the cleaning component, the scraper 20 provided in this embodiment is an integrated structure, and the integrated structure can be obtained by an integrated molding process of secondary encapsulation of soft glue and hard glue.

[0111] In the third aspect, based on the same inventive concept, the present application also provides a cleaning head 1, referring to Figures 5 to 9 , Fig.11 As shown, the cleaning head 1 includes a cleaning head shell 60, a sewage tank 40 arranged on the cleaning head shell 60, a cleaning roller 70 arranged at the front of the interior of the cleaning head shell 60, a brush assembly 50 arranged in the cleaning head shell, a garbage box 80 arranged directly below the brush assembly, and the guard plate assembly as described in the first aspect.

[0112] In this embodiment, the cleaning head 1 corresponds to the guard plate 10 described in the first aspect, and its specific use process can refer to the process of applying the guard plate assembly described in the first aspect, and the repeated parts will not be repeated here.

[0113] In a specific embodiment, referring to Figures 5 to 7 , Fig. 9 , Fig.11 As shown, the cleaning head 1 includes a sewage tank 40 , and sewage flowing out of the first water outlet 34 and the second water outlet 35 merges in the sewage channel 603 and then flows into the sewage tank 40 .

[0114] In a specific embodiment, referring to Figure 7 , Fig. 9 As shown, the cleaning head 1 includes a brush assembly 50 and a trash box 80; the brush assembly 50 abuts against the cleaning roller 70 and can sweep the surface of the cleaning roller 70; the trash box 80 is arranged directly below the brush assembly 50, and the trash swept by the brush assembly 50 can fall into the trash box 80.

[0115] In a specific embodiment, referring to Figure 7 , Fig. 9 As shown, the cleaning head 1 includes a cleaning head shell 60, which includes a shell body 600 and an outer shell 601. The guard plate assembly is detachably connected to the outer shell 601, which is convenient for cleaning the guard plate 10. A ventilation space (not shown in the drawings) protrudes outward from the top plane of the sewage tank 40, and a vent 401 connected to the sewage tank 40 is provided at the top of the ventilation space, so that the air in the sewage tank 40 is connected to the outside atmosphere, ensuring that the sewage in the sewage channel 603 can smoothly discharge the air in the sewage tank 40 through the vent 401 during the process of flowing to the sewage tank 40, so that the sewage can smoothly enter the sewage tank 40.

[0116] In a specific embodiment, referring to Figure 7 , Fig. 9 As shown, the cleaning head housing 60 further includes a body connecting portion 604 for connecting to a body of the floor scrubber (not shown in the drawings), and the clean water channel 602 of the cleaning head 1 is connected to a clean water tank of the body (not shown in the drawings).

[0117] In the fourth aspect, based on the same inventive concept, the present application also provides a cleaning head 1, which includes a cleaning head shell 60, a sewage tank 40 arranged on the cleaning head shell 60, a cleaning roller 70 arranged at the front part of the interior of the cleaning head shell 60, a brush assembly 50 arranged in the cleaning head shell 60, a garbage box 80 arranged directly below the brush assembly 50, and the cleaning assembly as described in the second aspect.

[0118] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, the positional relationship between components can be relatively fixed, or the components can be physically fixedly connected; they can be detachably connected or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium or component; they can be internally connected between two elements or interact with each other. Unless otherwise clearly defined in the specification, other interpretations may not achieve the corresponding functions or effects. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0119] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A guard plate assembly, characterized in that: A guard plate is included, wherein the guard plate includes: The guard plate body is arc-shaped and protects the cleaning roller. The guard plate body is directed toward the cleaning roller and is provided with a water squeezing strip that is interference-fitted with the cleaning roller. A filter plate extends from the guard plate body toward the cleaning roller, passes through both ends of the guard plate body, and is provided with a plurality of racks evenly distributed along the axial direction of the cleaning roller and at least partially abutting against the cleaning roller; As the cleaning roller rotates, a filtering space is formed between the filtering plate and the water squeezing bar, and the filtering plate excludes garbage from the filtering space; Preferably, the guard plate body is detachably connected to the cleaning head housing from the inner side of the arc shape outward; Preferably, the water squeezing strip passes through both ends of the guard plate body and continuously abuts against the cleaning roller; Preferably, the middle section of the water squeezing strip is in a straight line shape, and the two end sections of the water squeezing strip are in an arc shape and extend toward the filter plate respectively, and the interference fit between the water squeezing strip and the cleaning roller increases gradually from the middle to the two ends; Preferably, the middle section of the filter plate is in a straight line shape, and the two end sections of the filter plate are in an arc shape and extend toward the water squeezing strips respectively.

2. The guard plate assembly according to claim 1, characterized in that The guard plate further comprises a baffle extending downwardly from the end of the guard plate body away from the cleaning roller and away from the cleaning head housing; The filter plate is arranged between the water squeezing strip and the baffle; Preferably, the guard plate is provided with a clamping portion, a transverse rib and a clamping protrusion, and the guard plate can be clamped into the cleaning head housing through the clamping portion, the transverse rib and the clamping protrusion; Preferably, the outer surface of the baffle is evenly distributed with reinforcing ribs along the vertical direction; Preferably, the end of the baffle plate horizontally extends in a direction away from the filter plate and has a fixing portion for connecting with other components; Preferably, it further comprises a scraper detachably connected to the fixing portion and the guard plate body; The scraper is in contact with the cleaning roller; Preferably, the scraper comprises a scraper body detachably connected to the fixing portion and a water receiving portion extending from the scraper body toward the filter plate; The water receiving portion is in contact with the cleaning roller, and at least a portion of the top ends of the teeth of the rack facing downward are higher than the upper surface of the water receiving portion; Preferably, the filter plate is arranged between the water squeezing strip and the water dividing strip; a water channel is formed between the cleaning roller, the water squeezing strip, the water receiving portion and the baffle; Preferably, a water inlet is provided at one end of the water trough, and a sewage outlet is provided at the other end, and the sewage outlet includes a first water outlet and a second water outlet; Preferably, the two ends of the water squeezing strip are gathered toward the filter plate, so that the water channel is wide in the middle and gradually narrows at the two ends, so that the water inlet and sewage outlet of the water channel are not too wide; Preferably, the filter plate is slightly away from the water inlet and is in a gradually opening trumpet shape, the area of ​​the filter plate close to the first water outlet is in a gradually shrinking shape, and the areas at both ends of the water trough that are blocked outside the filter space have sufficient turbulent space.

3. The guard plate assembly according to claim 2, characterized in that: A water dividing strip is extended from the middle of the water receiving portion in a direction away from the cleaning roller; Preferably, the water dividing strip divides the water channel into a primary water channel and a secondary water channel; Preferably, the water inlet is provided at one end of the primary water tank, and the first water outlet is provided at the other end; The second water outlet is arranged at one end of the secondary water tank away from the water inlet.

4. The guard plate assembly according to claim 2, characterized in that: The scraper further includes a pre-scraping portion extending downward from the scraper body away from the filter plate and abutting against the cleaning roller.

5. The guard plate according to claim 4, characterized in that The distance between the filter plate and the water squeezing bar is greater than the tooth gap between the two racks; Preferably, the tooth gap between the two racks is evenly distributed on the filter plate along the axial direction of the cleaning roller.

6. The guard plate assembly according to claim 1, characterized in that The guard plate body is provided with a viewing window; The window is arranged above the filtering space.

7. The guard plate assembly according to any one of claims 1 to 6, characterized in that: The guard plate is used to reinforce the strength of the portion of the cleaning head housing that protects the cleaning roller.

8. A cleaning component, applied to a cleaning head, characterized in that: It comprises the guard plate assembly according to any one of claims 1 to 7; along the rotation direction of the cleaning roller, the water receiving part, the filter plate and the water squeezing bar are in contact with the cleaning roller in sequence, so that the garbage on the surface of the cleaning roller can be cleaned multiple times.

9. A cleaning head, characterized in that: It includes a cleaning head shell, a sewage tank arranged on the cleaning head shell, a cleaning roller arranged at the front of the cleaning head shell, a brush assembly arranged in the cleaning head shell, a garbage box arranged directly below the brush assembly, and a guard plate assembly as described in any one of claims 1 to 7.

10. A cleaning head, characterized in that: It comprises a cleaning head shell, a sewage tank arranged on the cleaning head shell, a cleaning roller arranged at the front of the cleaning head shell, a brush assembly arranged in the cleaning head shell, a garbage box arranged directly below the brush assembly, and a cleaning assembly as claimed in claim 8.

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