Dirty water squeezing mechanism of cleaning head and cleaner having the same

Abstract

An embodiment of the present invention discloses a dirty water extrusion mechanism for a cleaning head and a cleaner having the same. The dirty water extrusion mechanism for a cleaning head comprises: a base; a cleaning head that is laterally rotatably connected to the base, the cleaning head having an imaginary rotation axis, a longitudinal center plane, and a transverse center plane, the longitudinal center plane being defined as extending in a vertical direction, the transverse center plane being defined as extending in a horizontal direction, the longitudinal center plane intersecting with the transverse center plane to form the rotation axis, so as to imaginarily divide the cleaning head into one zone, two zones, three zones, and four zones in the circumferential direction; and a baffle surrounding the outer circumference of the cleaning head. According to the present invention, the extruded solid-liquid mixture can be guided and collected without introducing a vacuum suction device, thereby reducing the manufacturing cost of the cleaning equipment, reducing the weight of the entire machine, and reducing the operating noise, thereby improving the user experience.

Description

Technical Field

[0001] The present invention relates to the field of cleaning equipment, in particular to a dirty water squeezing mechanism of a cleaning head and a cleaner having the same. Background Art

[0002] Common wet or wet-dry cleaning equipment, such as handheld mops, mopping robots, floor scrubbers, sweepers and mops, etc., are mainly composed of a cleaning device and a recovery device. The cleaning device usually includes at least a wet cleaning head, which can clean and absorb dirt in an environment sprayed with clean water or detergent. The recovery system usually includes a cleaning channel and a recovery bucket. The solid-liquid mixture absorbed on the wet cleaning head needs to be squeezed out in the cleaning channel before it can be collected by the recovery bucket. Therefore, it is usually necessary to set an extrusion component in the cleaning channel. The extruded solid-liquid mixture needs to be guided and collected in time, otherwise stains will remain on the cleaned ground, which will reduce the user experience. Therefore, existing cleaning equipment generally uses a vacuum suction device to suck the extruded solid-liquid mixture into the recovery bucket for collection. However, the cleaner using a vacuum suction device still has the following technical problems during use:

[0003] Although a vacuum suction device is used to guide and collect the extruded solid-liquid mixture, the additional introduction of the vacuum suction device not only increases the manufacturing cost of the cleaning equipment, but also increases the weight, resulting in a decrease in user experience. In addition, the vacuum suction device will generate a lot of noise when working, which further reduces the user experience.

[0004] In view of this, it is necessary to develop a dirty water extrusion mechanism for a cleaning head and a cleaner having the same, so as to guide and collect the extruded solid-liquid mixture without introducing a vacuum suction device, thereby improving the user experience. Summary of the Invention

[0005] An embodiment of the present invention provides a dirty water extrusion mechanism for a cleaning head and a cleaner having the same, which can be used to guide and collect the extruded solid-liquid mixture without introducing a vacuum suction device, thereby reducing the manufacturing cost of the cleaning equipment, reducing the weight of the entire machine, and also reducing the working noise, thereby improving the user experience.

[0006] In order to solve the above technical problems, the embodiments of the present invention disclose the following technical solutions:

[0007] In one aspect, a dirty water squeezing mechanism for a cleaning head is provided, comprising:

[0008] base;

[0009] a rear cleaning head rotatably connected to the base in a transverse direction, the rear cleaning head having an imaginary rotation axis, a longitudinal center plane, and a transverse center plane, the longitudinal center plane being defined as extending in a vertical direction, the transverse center plane being defined as extending in a horizontal direction, the longitudinal center plane and the transverse center plane intersecting to form the rotation axis, so as to imaginarily divide the rear cleaning head into first, second, third, and fourth zones in the circumferential direction, in sequence; and

[0010] a rear baffle surrounding the periphery of the rear cleaning head;

[0011] The rear baffle extends circumferentially at least in the one zone, and the extended section of the rear baffle in the one zone is spaced apart from the rear cleaning head to form a cleaning channel between the rear baffle and the rear cleaning head; an extrusion assembly is arranged in the cleaning channel.

[0012] In addition to or as an alternative to one or more of the features disclosed above, the extrusion assembly is formed with a squeeze water channel having:

[0013] a water collection port, which faces the rotation direction of the rear cleaning head; and

[0014] a water outlet, which is opposite to the rotation direction of the rear cleaning head;

[0015] Wherein, the cross-sectional area of at least one section of the water squeezing channel gradually decreases in the rotation direction of the rear cleaning head, so that the cross-sectional area of the water outlet is smaller than the cross-sectional area of the water collection port.

[0016] In addition to one or more of the features disclosed above, or as an alternative, at least one flow limiting portion is arranged in the water squeezing channel, and the flow limiting portion is located between the water collecting port and the water outlet; the flow limiting portion is arranged in a gap with the side wall of the water squeezing channel and is adjacent to the water outlet, so that the water flow in the water squeezing channel is divided into at least two streams by the flow limiting portion and then converges at the water outlet.

[0017] In addition to or as an alternative to one or more of the features disclosed above, at least one restriction is aligned with the water outlet, defining:

[0018] The distance between the flow limiting portion and the side wall of the water squeezing channel is d; and

[0019] The dimension of the water outlet in the direction of the rotation axis is D; then 2.5d≤D≤6d.

[0020] In addition to or as an alternative to one or more of the features disclosed above, the sidewalls and the flow restriction of the squeeze channel are connected to the tailgate at their respective tops.

[0021] In addition to or as an alternative to one or more of the features disclosed above, the sidewall of the squeeze channel is connected to the base at its side, and the flow restriction is connected to the tailgate at its top.

[0022] Additionally or alternatively to one or more of the features disclosed above, the sidewall at least partially penetrates into the water absorbent layer of the rear cleaning head.

[0023] In addition to or as an alternative to one or more features disclosed above, the intrusion amount of the side wall is 0.05 to 0.2 of the thickness of the water absorbing layer.

[0024] In addition to one or more of the features disclosed above, or as an alternative, it is defined that: the line connecting the water outlet and the rotation center of the rear cleaning head is the water outlet positioning line, and a positioning angle α is formed between the water outlet positioning line and the longitudinal center plane, and the size of the positioning angle α is 30° to 75°.

[0025] On the other hand, a cleaning device is further disclosed. In addition to or as an alternative to one or more features disclosed above, the cleaning device comprises the dirty water squeezing mechanism as described in any one of the above items.

[0026] One of the above technical solutions has the following advantages or beneficial effects: since it can guide and collect the extruded solid-liquid mixture without introducing a vacuum suction device, it reduces the manufacturing cost of the cleaning equipment, reduces the weight of the entire machine, and also reduces the working noise, thereby improving the user experience.

[0027] Another technical solution among the above technical solutions has the following advantages or beneficial effects: since the cross-sectional area of at least a section of the water squeezing channel gradually decreases in the rotation direction of the cleaning head, so that the cross-sectional area of the water outlet is smaller than the cross-sectional area of the water collection port, the extruded solid-liquid mixture can be gathered to facilitate subsequent guidance and collection.

[0028] Another technical solution among the above technical solutions has the following advantages or beneficial effects: since at least one flow limiting portion is arranged in the water squeezing channel, the flow limiting portion is located between the water collecting port and the water outlet; the gap between the flow limiting portion and the side wall of the water squeezing channel is set and close to the water outlet, so that the water flow in the water squeezing channel is divided into at least two streams by the flow limiting portion and then converges at the water outlet, so that the water flow speed at the water outlet can be significantly improved, thereby accelerating the efficiency of water flow through the water outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0030] Figure 1 A longitudinal cross-sectional view of a cleaning device that can implement an embodiment of the present invention is shown, showing the main components of the cleaning device;

[0031] Figure 2 A longitudinal cross-sectional view of a dirty water squeezing mechanism of a cleaning head provided by an embodiment of the present invention;

[0032] Figure 3 A top view of the internal structure of the dirty water squeezing mechanism of the cleaning head provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] refer to Figure 1 , Figure 1 FIG1 is a longitudinal cross-sectional view of a cleaning device 1 that can implement an embodiment of the present invention, showing the main components of the cleaning device 1, including a base 11, a front cleaning head 12 and a rear cleaning head 13. Figure 1 In the illustrated embodiment, the base 11 is provided with a cleaning chamber 111, a dry garbage collection chamber 112, a wet garbage collection chamber 113 and a wiping and mopping chamber 114 arranged in sequence along a cleaning direction W (opposite to the forward direction H of the cleaner 1), wherein the cleaning chamber 111, the dry garbage collection chamber 112, the wet garbage collection chamber 113 and the wiping and mopping chamber 114 are independent and separated from each other, and the cleaning chamber 111 is laterally rotatably connected to the front cleaning head 12, and the wiping and mopping chamber 114 is laterally rotatably connected to the rear cleaning head 13.

[0035] In other embodiments, a connector 15 is provided on the top of the base 11, and the cleaner 1 can be connected to other accessories through the connector 15, such as a handle of the cleaner, a mobile power supply of the cleaner, etc.; at the same time, the bottom of the base 11 is rotatably connected to at least three non-collinearly arranged rollers 1151.

[0036] In actual use, the cleaning mode of the cleaner 1 can be a sweeping and mopping integrated form, that is, the front cleaning head 12 performs the sweeping function, and the rear cleaning head 13 performs the wiping and mopping function. In order to further improve the cleaning efficiency, a front baffle 122 is usually arranged around the outer periphery of the front cleaning head 12. The front side of the front baffle 122 is provided with a spray head 1222a for spraying cleaning water or detergent. Before or during cleaning, the spray head 1222a sprays cleaning water or detergent onto the path to be cleaned. Spraying cleaning water or detergent on the path to be cleaned can improve the cleaning efficiency and the sweeping ratio. Figure 3 In the illustrated embodiment, a liquid supply pipe 1222b for supplying cleaning agent or cleaning water to the spray head 1222a extends inside the cleaner 1.

[0037] The front cleaning head 12 is mainly used to clean up the large volume of garbage upstream of the cleaning path, such as large particles of dust (usually with a particle radius of 2mm or more), hair, rice grains, vegetable leaves, etc. A dust throwing channel 1221 is provided between the cleaning chamber 111 and the dry garbage collection chamber 112. The large volume of garbage cleaned by the front cleaning head 12 is thrown into the dry garbage collection chamber 112 through the dust throwing channel 1221 under the action of the gravity and centrifugal force of the garbage itself; and the rear cleaning head 13 is used to clean up the large volume of garbage downstream of the cleaning path. The small particles of dirt (usually with a particle radius of less than 2 mm) and the solid-liquid mixture remaining after cleaning by the front cleaning head 12 are cleaned and adsorbed by entrainment. A water collection channel 1131 is provided between the wet garbage collection chamber 113 and the mopping chamber 114, which are connected to each other. The solid-liquid mixture (i.e. sewage, containing small particles of dust with a particle radius of less than 2 mm and other soluble dirt) adsorbed and entrained by the rear cleaning head 13 enters the wet garbage collection chamber 113 through the water collection channel 1131 under the action of its own gravity and centrifugal force.

[0038] In a preferred embodiment, the front cleaning head 12 typically takes the form of a roller brush, i.e., it has a generally cylindrical front roller with at least three radially arranged roller brush blades 121 circumferentially arranged around the front roller. The roller brush blades 121 extend spirally around the axis X1 of the front roller, wherein each roller brush blade 121 includes a plurality of radially extending bristles. The rear cleaning head 13 typically takes the form of a roller bar, i.e., it has a generally cylindrical rear roller with a water-absorbing layer 131 circumferentially arranged around the rear roller. The water-absorbing layer 131 is typically made of a water-absorbing material with a certain degree of elasticity, such as PVA collodion, chemical fiber, plant fiber, sponge, etc. Regardless of the type of absorbent material used, the absorbent layer 131 can release the adsorbed sewage after being squeezed and contracted. In order to reduce the amount of released sewage and collect it, an extrusion component is usually required in the cleaning channel. The extruded solid-liquid mixture (i.e., sewage) needs to be guided and collected in a timely manner. Otherwise, stains will remain on the cleaned floor, which will reduce the user experience. Therefore, existing cleaning equipment generally uses a vacuum suction device to suck the extruded solid-liquid mixture into a recovery bucket for collection. However, the following technical problems still exist during the use of cleaners using a vacuum suction device:

[0039] Although a vacuum suction device is used to guide and collect the extruded solid-liquid mixture, the additional introduction of the vacuum suction device not only increases the manufacturing cost of the cleaning equipment, but also increases the weight, resulting in a decrease in user experience. In addition, the vacuum suction device will generate a lot of noise when working, which further reduces the user experience.

[0040] To this end, the embodiments of the present application introduce a dirty water extrusion mechanism for the cleaning head, so as to guide and collect the extruded solid-liquid mixture without introducing a vacuum suction device, thereby improving the user experience.

[0041] Reference Figure 2 and Figure 3 , Figure 2 The longitudinal cross-sectional view of the dirty water extrusion mechanism of the cleaning head according to an embodiment of the present invention is shown. The rear cleaning head 13 in the dirty water extrusion mechanism of the cleaning head is laterally rotatably connected to the base 11. The rear cleaning head 13 has an imaginary rotation axis X2 and a longitudinal center plane P. z and the transverse center plane P x , the longitudinal center plane P z The transverse center plane P is defined as extending in the vertical direction. x Defined as extending in the horizontal direction, the longitudinal center plane P z With the transverse center plane P xThe intersection forms the rotation axis X2, so as to circumferentially divide the rear cleaning head 13 into a first zone 133, a second zone 134, a third zone 135 and a fourth zone 136; a rear baffle 132 is arranged around the outer circumference of the rear cleaning head 13;

[0042] The rear baffle 132 extends circumferentially at least in the first region 133. The extended portion of the rear baffle 132 in the first region 133 is spaced apart from the cleaning head 13 to form a cleaning channel K between the rear baffle 132 and the rear cleaning head 13. The extrusion assembly 14 is disposed in the cleaning channel K. This allows for the collection of the extruded solid-liquid mixture without the need for a vacuum suction device, thereby reducing the manufacturing cost and weight of the cleaning equipment while also reducing operating noise, thereby enhancing the user experience.

[0043] Refer again Figure 2 The extrusion assembly 14 is formed with a water squeezing channel 143, and the water squeezing channel 143 has:

[0044] The water collection port 1412 is aligned with the rotation direction R of the rear cleaning head 13; and

[0045] The water outlet 1411 is opposite to the rotation direction R of the rear cleaning head 13;

[0046] The cross-sectional area of at least one section of the water squeezing channel 143 gradually decreases in the rotation direction R of the rear cleaning head 13 , so that the cross-sectional area of the water outlet 1411 is smaller than the cross-sectional area of the water collection port 1412 .

[0047] Furthermore, at least one flow restriction 142 is disposed in the water squeezing channel 143, and the flow restriction 142 is located between the water collecting port 1412 and the water outlet 1411. The flow restriction 142 is spaced apart from the sidewall 141 of the water squeezing channel 143 and is disposed adjacent to the water outlet 1411, so that the water flow in the water squeezing channel 143 is split into at least two streams by the flow restriction 142 and then converges at the water outlet 1411. This allows the squeezed solid-liquid mixture to be gathered for subsequent guidance and collection.

[0048] Reference Figure 3 , at least one flow restriction portion 142 is aligned with the water outlet 1411, and is defined as:

[0049] The distance between the flow limiting portion 142 and the side wall 141 of the water squeezing channel 143 is d; and

[0050] The dimension of the water outlet 1411 in the direction of the rotation axis X2 is D; then 2.5d≤D≤6d. Figure 3In the illustrated embodiment, there may be only one flow restriction portion 142 , where D=6d. In other embodiments, a filter screen is further arranged between the flow restriction portion 142 and the side wall 141 of the water squeezing channel 143 .

[0051] To further facilitate installation and cleaning of the water squeezing channel 143, the rear baffle 132 can be configured to be removable from the base 11, and the sidewalls 141 and flow restriction 142 of the water squeezing channel 143 are connected to the baffle 132 at their respective tops. In another embodiment, the sidewalls 141 of the water squeezing channel 143 are connected to the base 11 at their sides, and the flow restriction 142 is connected to the baffle 132 at its top.

[0052] In order to better squeeze out the sewage in the rear cleaning head 13, the side wall 141 is configured to at least partially penetrate into the water absorbing layer 131 of the cleaning head 13. In a preferred embodiment, the penetration amount of the side wall 141 is 0.05 to 0.2 of the thickness of the water absorbing layer 131.

[0053] Furthermore, in order to prevent the squeezed sewage from flowing back, the position of the water outlet 1411 cannot be set near the top of the rear cleaning head 13. It is defined that the line connecting the water outlet 1411 and the rotation center of the cleaning head 13 is the water outlet positioning line 144, and the water outlet positioning line 144 is parallel to the longitudinal center plane P. z A positioning angle α is formed between the nozzle and the nozzle, and the size of the positioning angle α is 30° to 75°. In a preferred embodiment, the size of the positioning angle α is 75°. In other embodiments, the rear baffle 132 starts from the end of the nozzle positioning line 144 and crosses the longitudinal center plane P z Extends to the second zone 134 and terminates at the transverse center plane P x The gap between the portion of the rear baffle 132 in the second zone 134 and the water absorbing layer 131 is 1 to 5 mm.

[0054] As a preferred embodiment, the cleaner 1 has a center line Y in the front-to-back direction, and the water outlet 1411 is arranged near the center line Y. In addition, in order to better receive the squeezed sewage, the water collection channel 1131 can be set as follows: Figure 2 The shown one is located downstream of the water outlet 1411. Figure 1In another embodiment, the bottom of the water collection channel 1131 is configured to have a diversion slope U. The diversion slope U, at the end opposite the rear cleaning head 13, penetrates 0.1 to 0.3 of the thickness of the water absorbing layer 131, thereby further squeezing the water absorbing layer 131 to release any remaining moisture. Furthermore, the end opposite the rear cleaning head 13 and the diversion slope U defines a tangent direction S. A diversion angle is formed between the extension direction of the diversion slope U and the tangent direction S. The diversion angle is 30° to 75°. In a preferred embodiment, the diversion angle is 60°.

[0055] The above is a detailed introduction to the dirty water squeezing mechanism of a cleaning head and a cleaner having the same provided in an embodiment of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present invention; ordinary technicians in this field should understand that: it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dirty water extrusion mechanism for a cleaning head, characterized in that: include: base (11); The rear cleaning head (13) is connected to the base (11) in a transverse rotational manner, and the rear cleaning head (13) has an imaginary rotation axis (X2), a longitudinal center plane (P z ) and the transverse center plane (P x ), the longitudinal center plane (P z ) is defined as extending in the vertical direction, the transverse center plane (P x ) is defined as extending in the horizontal direction, the longitudinal center plane (P z ) and the transverse center plane (P x ) intersect to form the rotation axis (X2), so as to circumferentially divide the rear cleaning head (13) into the first zone (133), the second zone (134), the third zone (135) and the fourth zone (136); and a rear baffle (132) surrounding the periphery of the rear cleaning head (13); The rear baffle (132) extends circumferentially at least in the one zone (133), and an extension section of the rear baffle (132) in the one zone (133) is spaced apart from the rear cleaning head (13) to form a cleaning channel (K) between the rear baffle (132) and the rear cleaning head (13); an extrusion assembly (14) is arranged in the cleaning channel (K); The extrusion assembly (14) is formed with a water squeezing channel (143), and the water squeezing channel (143) has: a water collection port (1412) facing the rotation direction (R) of the rear cleaning head (13); and a water outlet (1411) which is opposite to the rotation direction (R) of the rear cleaning head (13); The cross-sectional area of at least one section of the water squeezing channel (143) gradually decreases in the rotation direction (R) of the rear cleaning head (13), so that the cross-sectional area of the water outlet (1411) is smaller than the cross-sectional area of the water collection port (1412); At least one flow limiting portion (142) is arranged in the water squeezing channel (143), and the flow limiting portion (142) is located between the water collecting port (1412) and the water outlet (1411); the flow limiting portion (142) is arranged with a gap between the side wall (141) of the water squeezing channel (143) and is adjacent to the water outlet (1411), so that the water flow in the water squeezing channel (143) is divided into at least two streams by the flow limiting portion (142) and then converges at the water outlet (1411); The side wall (141) and the flow limiting portion (142) of the water squeezing channel (143) are connected to the rear baffle (132) at their respective tops; The side wall (141) of the water squeezing channel (143) is connected to the base (11) at its side, and the flow limiting portion (142) is connected to the rear baffle (132) at its top.

2. The dirty water squeezing mechanism according to claim 1, characterized in that: At least one flow restriction portion (142) is aligned with the water outlet (1411), defining: The distance between the flow limiting portion (142) and the side wall (141) of the water squeezing channel (143) is d; and The dimension of the water outlet (1411) in the direction of the rotation axis (X2) is D; then 2.5d≤D≤6d.

3. The dirty water squeezing mechanism according to claim 1 or 2, characterized in that: The side wall (141) at least partially penetrates into the water absorption layer (131) of the rear cleaning head (13).

4. The dirty water squeezing mechanism according to claim 3, characterized in that: The intrusion amount of the side wall (141) is 0.05-0.2 of the thickness of the water absorbing layer (131).

5. The dirty water squeezing mechanism according to claim 1 or 2, characterized in that: Definition: The line connecting the water outlet (1411) and the rotation center of the rear cleaning head (13) is the water outlet positioning line (144), and the water outlet positioning line (144) and the longitudinal center plane (P z ) form a positioning angle α between them, and the size of the positioning angle α is 30°~75°.

6. A cleaning device, characterized in that: It comprises the dirty water squeezing mechanism as described in any one of claims 1 to 5.

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