CN217288119U

CN217288119U - Mixing device and base station for surface cleaning device

Info

Publication number: CN217288119U
Application number: CN202122852516.7U
Authority: CN
Inventors: 龚永杰; 唐成; 段飞; 钟亮; 其他发明人请求不公开姓名
Original assignee: Beijing Shunzao Technology Co Ltd
Current assignee: Beijing Shunzao Technology Co Ltd
Priority date: 2021-11-21
Filing date: 2021-11-21
Publication date: 2022-08-26
Anticipated expiration: 2031-11-21

Abstract

The present disclosure provides a mixing device which is provided in a base station of a surface cleaning device and mixes and stirs a cleaning liquid and a detergent which enter the mixing device, including: a housing forming an accommodating space and including a first inlet through which a cleaning liquid and/or a cleaning agent enters the accommodating space; the transmission shaft is rotatably arranged in the accommodating space; the first impeller part is fixedly connected with the transmission shaft, and at least corresponds to the first inlet, so that the cleaning liquid and/or the cleaning agent entering the accommodating space through the first inlet can rotate the first impeller part; the second impeller part is fixedly connected with the transmission shaft so as to rotate through the rotation of the first impeller part under the transmission action of the transmission shaft; wherein the cleaning liquid and the cleaning agent in the accommodating space are agitated by the rotating second impeller portion to form a mixed liquid. The present disclosure also provides a base station for a surface cleaning apparatus.

Description

Mixing device and base station of surface cleaning device

Technical Field

The present disclosure provides a mixing device and a base station for a surface cleaning device.

Background

In a conventional surface cleaning apparatus such as a floor sweeping robot, while clean water is generally used for wet cleaning of a floor surface or the like, a cleaning liquid mixture (a liquid mixture of clean water and a cleaning agent) is used in some cases in order to improve a cleaning effect. Correspondingly, the base station of the surface cleaning apparatus also needs to provide a corresponding cleaning mixture when providing liquid to the surface cleaning apparatus. The cleaning mixture is usually formed by mixing clean water and detergent in a base station. The stirring shaft is driven by the motor and the speed reducer or other driving devices in the stirring and mixing process, and the motor and the speed reducer are large in size and large in correspondingly required installation space, so that noise is easily generated by the motor and the speed reducer. The additional reduction of electrical components and gears involved results in high sealing requirements and an increase in overall costs.

Therefore, it is necessary to solve various problems such as agitation of the cleaning liquid and noise of a motor during agitation in a case where space and cost are constant.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the above technical problems, the present disclosure provides a mixing device and a base station of a surface cleaning device.

According to one aspect of the present disclosure, a mixing device that is provided in a base station of a surface cleaning device and that performs mixing agitation of a cleaning liquid and a cleaning agent entering the mixing device, includes:

a housing forming an accommodation space and including a first inlet through which the cleaning liquid and/or the cleaning agent enters the accommodation space;

a transmission shaft rotatably disposed inside the accommodating space;

the first impeller part is fixedly connected with the transmission shaft and at least corresponds to the first inlet, so that the cleaning liquid and/or the cleaning agent entering the accommodating space through the first inlet can rotate the first impeller part; and

the second impeller part is fixedly connected with the transmission shaft, so that the second impeller part can rotate through the rotation of the first impeller part under the transmission action of the transmission shaft;

wherein the cleaning liquid and the cleaning agent in the accommodating space are stirred by the second impeller portion that rotates to form a mixed liquid.

According to an embodiment of the present disclosure, the first inlet allows the cleaning liquid and the cleaning agent to enter the receiving space, or

The housing further comprises a second inlet, wherein the first inlet allows the cleaning liquid to enter the receiving space and the second inlet allows the cleaning agent to enter the receiving space.

According to an embodiment of the present disclosure, the second impeller portion is disposed below the first impeller portion.

According to an embodiment of the present disclosure, the first inlet is provided to a side upper wall or a top wall of the housing.

According to one embodiment of the present disclosure, the side lower wall or bottom wall of the housing is provided with a discharge opening allowing the mixed liquid to be provided to the outside of the housing.

According to an embodiment of the present disclosure, the first impeller portion includes two or more first blades distributed circumferentially around the drive shaft, the first inlet and the first blades being configured to: the first impeller portion is caused to rotate by the kinetic energy, or both the kinetic and potential energy, of the cleaning liquid and/or cleaning agent.

According to one embodiment of the disclosure, the direction of impact of the cleaning liquid and/or cleaning agent on the first blade is substantially in the radial direction of the first blade.

According to one embodiment of the present disclosure, each first blade is an arcuate surface extending outwardly and upwardly relative to the drive shaft.

According to an embodiment of the present disclosure, along the extending direction of the arc surface, an included angle between the extending direction of the arc surface and the axial direction of the transmission shaft is gradually reduced.

According to one embodiment of the present disclosure, the included angle ranges from 5 ° to 85 °.

According to an embodiment of the present disclosure, with respect to the drive shaft, the first blade is shaped to: is bent from the inside outwards against the direction of rotation of the first impeller section and from the top downwards against the direction of rotation of the first impeller section.

According to one embodiment of the disclosure, the point of impact of the first blade with the cleaning liquid and/or cleaning agent is located substantially in the middle of the first blade.

According to an embodiment of the disclosure, the second impeller portion includes two or more second blades distributed circumferentially around the drive shaft.

According to an embodiment of the present disclosure, each second blade is an arcuate surface extending outwardly and downwardly with respect to the drive shaft.

According to an embodiment of the present disclosure, with respect to the drive shaft, the second blade is shaped to: is bent from the inside to the outside in the rotation direction of the second impeller portion and is bent from the top to the bottom against the rotation direction of the second impeller portion.

According to one embodiment of the present disclosure, the first end portion and the second end portion of the drive shaft are disposed at the top and the bottom of the housing through bearings, respectively.

According to an embodiment of the present disclosure, the first impeller portion is fixed to the drive shaft by axial and radial fastening means, and/or the second impeller portion is fixed to the drive shaft by axial and radial fastening means.

According to an embodiment of the present disclosure, the liquid level detection device detects a liquid level height of the receiving space in order to compare the liquid level height with a liquid level threshold value, the liquid level threshold value comprising at least one of a lowest liquid level threshold value and a highest liquid level threshold value.

According to another aspect of the present disclosure, a base station for a surface cleaning apparatus to dock, comprises:

a cleaning liquid supply part for supplying a cleaning liquid;

a detergent supply part for supplying detergent; and

the mixing device of any one of the above claims, wherein the mixing device receives the cleaning liquid and the cleaning agent and stirs them to form the mixed liquid.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1-2 show a schematic view of a surface cleaning apparatus according to one embodiment of the present disclosure.

Fig. 3-5 show schematic diagrams of a base station according to one embodiment of the present disclosure.

FIG. 6 illustrates a schematic view of a base assembly according to one embodiment of the present disclosure.

Fig. 7-17 illustrate a schematic view of a second maintenance assembly or components thereof according to one embodiment of the present disclosure.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically connected, electrically connected, and the like, with or without intervening components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" higher, "and" side (e.g., as in "side wall") to describe one component's relationship to another (other) component as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Moreover, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

According to one embodiment of the present disclosure, a base station is provided. Wherein the base station can be used to dock an autonomous surface cleaning apparatus such as a sweeping robot.

The surface cleaning apparatus may include a generally circular or rectangular plus circular housing. As shown in fig. 1 and 2, the surface cleaning apparatus 10 can include a wet cleaning portion and a dry cleaning portion. Wherein the wet cleaning part and the dry cleaning part may be disposed at a bottom of the housing, and may be in contact with the cleaning surface to perform wet cleaning and dry cleaning of the cleaning surface.

The wet cleaning part may include a first rotating member 11 and a second rotating member 12, and a mop (not shown in the drawings) such as a mop, etc. may be provided on the first rotating member 11 and the second rotating member 12, respectively. The first rotating member 11 and the second rotating member 12 are arranged in parallel and can rotate around the rotating shafts, respectively, so as to mop the cleaning surface while the first rotating member 11 and the second rotating member 12 are in contact with the cleaning surface. A cleaning liquid receiving portion may be provided inside the housing of the surface cleaning apparatus, and the cleaning liquid is supplied to the mop through the cleaning liquid supply port, so that the cleaning surface is wet-cleaned by the cleaning liquid adsorbed by the mop.

The dry type cleaning part may include a roller brush part 13 and an edge brush part 14, wherein the number of the edge brush part 14 may be one or two, and in case of providing one edge brush part, it may be provided at one side of the surface cleaning apparatus, and in case of providing two edge brush parts, it may be provided at both sides of the surface cleaning apparatus, respectively. In the process of cleaning the cleaning surface, the side brush part 14 may be rotated to collect the garbage such as debris near the rolling brush part 13, so that the garbage is rolled into a dust collecting part provided inside a housing of the surface cleaning apparatus by rotating the rolling brush part 13, wherein the dust collecting part may be in the form of a dust collecting box through which the garbage from the cleaning surface is collected and stored.

Preferably in the present disclosure, the wet cleaning portion may be disposed at a rear side of the dry cleaning portion with respect to a working traveling direction of the surface cleaning apparatus. This allows for dry-then-wet cleaning. Further, the wet cleaning part may be movable up and down with respect to the wet cleaning part. Thus, when wet cleaning is not performed, the wet cleaning portion can be lifted so as not to make contact with the cleaning surface. While wet cleaning is performed, the wet cleaning portion may be controlled to contact the cleaning surface and may also be provided with additional pressure, so that the wet cleaning portion in contact with the cleaning surface may provide additional driving force or resistance to the surface cleaning apparatus. In certain cleaning scenarios where stubborn stains and the like are to be cleaned, the pressure provided can cause the mop of the wet cleaning section to more intimately contact the cleaning surface, which can result in better cleaning. Further, although in the present disclosure the wet cleaning section is in the form of two rotating members, it will be appreciated that it may be provided as one rotating member, for example the rotating member may be a tracked rotating member, and the tracked rotating member may be arranged to rotate in or against the direction of travel of the surface cleaning apparatus to effect wet cleaning of the cleaning surface.

Fig. 3 shows a base station 20 according to an embodiment of the present disclosure. Wherein the base station can interface with the surface cleaning apparatus. When the surface cleaning device is docked to the base station, dust, debris and other debris collected in the dust collection portion of the surface cleaning device is sucked to the base station to evacuate the dust collection portion of the surface cleaning device, and/or to charge the surface cleaning device, and/or to clean a mop of the surface cleaning device, and/or to replenish a cleaning liquid containing portion of the surface cleaning device with cleaning liquid.

As shown in fig. 3, the base station 20 may include a base assembly 100, a first maintenance assembly 200, and a second maintenance assembly 300.

The base assembly 100 can provide a receiving space for receiving the surface cleaning apparatus, when a part of the surface cleaning apparatus enters the base assembly 100, the surface cleaning apparatus can be charged through the charging interface 120 provided in the base assembly 100, and/or dust, debris and other garbage collected in the dust collecting part can be sucked to the first maintenance assembly 200 through the suction interface 130 provided in the base assembly 100, and/or cleaning liquid can be replenished to the cleaning liquid receiving part of the surface cleaning apparatus through the liquid replenishing interface 140 provided in the base assembly 100; and/or the mop of the surface cleaning apparatus can be cleaned by a cleaning portion provided in the base assembly 100.

The primary function of the first maintenance assembly 200 is to suck up dust, debris and other debris collected in the dust collection portion of the surface cleaning apparatus and to store the sucked up debris. The second maintenance assembly 300 may include a cleaning liquid storage portion and a recovery liquid storage portion, and may be connected by a conduit, and the cleaning liquid stored in the cleaning liquid storage portion is provided to the fluid replacement port of the base assembly 100, and the cleaning liquid is provided to the surface cleaning apparatus, and the recovery liquid after self-cleaning the mop of the surface cleaning apparatus is pumped from the washing portion of the base assembly 100 to the recovery liquid storage portion through the conduit.

In the present disclosure, the first and

second maintenance assemblies

200 and 300 may be selectively used in cooperation with the base assembly 100, so that base stations having different maintenance modes may be constructed. As shown in fig. 4, the self-emptying mode of the different maintenance modes may be achieved by mating the first maintenance assembly 200 with the base assembly 100. When the first maintenance assembly 200 is combined with the base assembly 100, the suction function of the garbage of the dust collecting part of the surface cleaning apparatus can be realized, so that the garbage of the dust collecting part of the surface cleaning apparatus is emptied to the first maintenance assembly 200, and thus the self-emptying function of the surface cleaning apparatus can be realized. As shown in FIG. 5, the second maintenance assembly 300 may be engaged with the base assembly 100 to implement a self-cleaning mode and/or a cleaning liquid replenishment mode of different maintenance modes. In combination with the base assembly 100, the second maintenance assembly 300 may enable self-cleaning of the mop of the surface cleaning apparatus and/or may enable replenishment of the cleaning liquid receptacle of the surface cleaning apparatus with cleaning liquid. In addition, as shown in fig. 3, the first maintenance assembly 200 and the second maintenance assembly 300 may be used in cooperation with the base assembly 100 to implement a self-emptying mode, a self-cleaning mode, and/or a liquid replenishing mode among different maintenance modes. Specifically, debris from the dirt collection portion of the surface cleaning apparatus can be drawn through the first maintenance assembly 200 to empty the dirt collection portion of the surface cleaning apparatus, and cleaning liquid can be replenished to the cleaning liquid receptacle of the surface cleaning apparatus and/or provided to clean the mop of the surface cleaning apparatus through the second maintenance assembly 300. In addition, the base assembly 100 may be used alone to effect charging of the surface cleaning apparatus, it being noted that even after the base assembly 100 is combined with the first maintenance assembly 200 and/or the second maintenance assembly 300, the charging mode may be selected simultaneously after the respective mode of the first maintenance assembly 200 and/or the second maintenance assembly 300 is selected. Although the role of the first and

second maintenance assemblies

200, 300 is expressly defined in this disclosure, this is merely an example, and it will be understood by those skilled in the art that maintenance assemblies having other functions may be selected for use with the base assembly or for use with a single function maintenance assembly or for use with a function integrated maintenance assembly, etc.

According to the combinable base station of the present disclosure, a user may select different components as desired to mate with a corresponding surface cleaning apparatus, such as the first maintenance assembly 200 and/or the second maintenance assembly 300 removably attached to the base assembly 100. For example, for a surface cleaning apparatus that performs only dry cleaning, the base assembly 100 can be selected to charge the surface cleaning apparatus, and if it is desired to empty the dust collecting portion of the surface cleaning apparatus, the first maintenance assembly 200 can be selected and engaged with the base assembly 100 to empty the dust collecting portion of the surface cleaning apparatus, such that a self-emptying mode and/or a charging mode can be performed. For example, in the case where there is no need to empty the dust collecting part of the surface cleaning apparatus, only the second maintenance assembly 300 and the base assembly 100 may be selected, and only the self-cleaning mode, the liquid replenishment mode, and/or the charging mode may be performed. In addition, according to the combinable base station of the present disclosure, if a certain component is updated at a later stage, a user can easily replace the previous component to use the updated component. The base station of the existing surface cleaning device is generally single in function, but for the multifunctional base station, the size is large, the use cost of a user is high, and the base station cannot be switched according to the user requirement. Therefore, the combinable base station according to the present disclosure can solve the problems existing in the existing base station and allow the user to accept or reject certain functions through the selection of hardware.

According to an alternative embodiment of the sectional base station of the present disclosure, the base assembly 100 may be designed to be disposed at a lower portion, the first maintenance assembly 200 may be designed to be disposed at a middle portion, and the second maintenance assembly 300 may be designed to be disposed at an upper portion. But the setting position may be changed according to the actual situation. Further, the first maintenance assembly 200 and the second maintenance assembly 300 are respectively provided with a combination portion combined with the base assembly 100. In addition, other functional components can be arranged to realize other working modes according to actual needs.

Further, although an external view using the first maintenance assembly 200 and the second maintenance assembly 300 is illustrated in fig. 4 and 5, that is, they may be accommodated in different housings. In the present disclosure, however, the first maintenance assembly 200 and the second maintenance assembly 300 may share a single assembly housing. The first maintenance assembly 200 and the second maintenance assembly 300 are both mounted into the assembly housing. Thus, when a user only needs the first maintenance assembly 200, the first maintenance assembly 200 can be assembled in the assembly housing, when only the second maintenance assembly 300 is needed, the second maintenance assembly 300 can be assembled in the assembly housing, and when the first maintenance assembly 200 and the second maintenance assembly 300 are needed, the first maintenance assembly 200 and the second maintenance assembly 300 can be assembled in the assembly housing. By the mode, the product can be assembled before being delivered to a user, so that the problem of the user in the assembling process is avoided, and the user can select different functions according to the requirement of the user.

To allow the maintenance assembly to be reliably disposed on the base assembly 100, mounting structures may be provided on the functional assembly that interfaces with the base assembly 100. For example, if the first maintenance assembly 200 and the second maintenance assembly 300 are provided with separate housings, the first maintenance assembly 200 or the second maintenance assembly 300 may be provided with a mounting structure. When the first maintenance assembly 200 and the second maintenance assembly 300 share an assembly housing, then a mounting structure may be provided on the assembly housing. As one example, the mounting structure may include an insert and a latch, and the insert may be disposed at the maintenance assembly and the latch may be disposed at the base assembly. As shown in fig. 6, an insertion opening 611 may be provided in the base member 100, and the insertion opening 611 may be inserted by an insertion member provided in the maintenance member. And the insert may be locked by the locking members 612 after insertion. In an alternative embodiment, an insert may be provided in the base assembly and an insert port may be provided in the maintenance assembly, and a latch may be provided on either the base assembly or the maintenance assembly. In addition, the base assembly and the maintenance assembly are locked, so that a user can conveniently carry the base station. Also, in the case where the first maintenance assembly 200 and the second maintenance assembly 300 share the assembly housing, the volume of the base can be effectively reduced.

Fig. 7 and 8 respectively show schematic views showing internal configurations of the second maintenance assembly with the housing removed. The liquid distribution system of the base station will be described in detail with reference to fig. 7 and 8.

The liquid distribution system may include a first liquid distribution structure, wherein the first liquid distribution structure may include a first pipe 411 and a first pumping part 412, and the cleaning liquid contained in the cleaning liquid storage part 350 may be transferred to the mixing device 370 by the first pumping part 412. The first pumping part 412 is preferably an electromagnetic pump in the present disclosure. The liquid distribution system may further comprise a second liquid distribution structure, which may comprise a second pipe 421, wherein the second pipe 421 may provide the cleaning agent in the cleaning agent storage part 340 to the mixing device 370, and further the liquid distribution system may comprise a second pumping part 422, in the present disclosure the second pumping part 422 is preferably in the form of a peristaltic pump. In the present disclosure, the mixing device 370 can mix the cleaning liquid from the cleaning liquid reservoir 350 and the cleaning agent from the cleaning agent reservoir 340 and provide the mixed liquid to the base assembly 100, such that the mopping member of the surface cleaning device can be washed by the mixed liquid and/or the mixed liquid can be provided to the surface cleaning device for washing the cleaning surface. Further, as an alternative embodiment, the cleaning liquid from the cleaning liquid reservoir 350 may also be provided directly to the base assembly 100 through the first liquid distribution structure for supply to the surface cleaning apparatus. As an example, the cleaning liquid from the cleaning liquid storage part 350 and the cleaning agent from the cleaning agent storage part 340 may be separately supplied to the mixing device 370 through respective pipes, or may be supplied together to the mixing device 370 through a portion of a common pipe. For example, may be provided to the mixing device 370 through respective conduits. Preferably, in the present disclosure, the cleaning liquid and the detergent may be received through pipes and supplied into the mixing part 370 together, for example, the detergent and the cleaning liquid may be received through a three-way valve (e.g., as shown in a region a of the drawing) and supplied into the mixing part 370 together through an inlet pipe. The mixed liquid of the mixing device 370 may be additionally provided to the base assembly 100 through a third liquid distribution structure, which may include a third pipe 431, a third pumping part 432, a third liquid supply port 433, and a supply pipe 434. The third pipe 431 may communicate with an outlet interface 376 of the mixing section 370, the mixed liquid is provided to the third liquid supply port 433 through a supply pipe 434 by a pumping action of the third pumping section 432 via the third pipe 431, and the mixed liquid is provided to the base assembly 100 through an interface of the third liquid supply port 433 and a corresponding portion of the base assembly 100, and the third pumping section 432 is preferably a diaphragm pump in the present disclosure. Furthermore, a detergent storage detection device 451 may be provided, wherein the detergent storage detection device 451 may be used to detect whether the detergent storage is in a corresponding position, i.e. to detect whether detergent can be supplied. The cleaning agent storage portion detection device 451 may be provided below the cleaning agent storage portion, and may take the form of a photoelectric sensor.

The fourth liquid distribution structure may include a fourth conduit 441, and the fourth conduit 441 may be in communication with the base assembly 100 via a fourth inlet port 442, so as to draw the recovered liquid from the base assembly 100 after the mopping of the mop in the base assembly 100. Furthermore, the fourth liquid distribution structure may further comprise a fourth pumping means, wherein the fourth pumping means may for example be a vacuum pump 443. The exhaust conduit 444 may be in communication with a vacuum pump 443. The recovery liquid storage portion 360 can be brought into a vacuum state by the operation of the vacuum pump 443, so that the recovery liquid can be drawn into the recovery liquid storage portion 360 through the fourth conduit 441, and the drawn gas is discharged through the exhaust conduit 444 while the recovery liquid remains in the recovery liquid storage portion 360.

Fig. 9-11 show schematic views of a mixing device 370 according to one embodiment of the present disclosure. As shown, the mixing device 370 may include a first impeller portion 371, a second impeller portion 372, and a drive shaft 373. The first impeller portion 371, the second impeller portion 372, and the drive shaft 373 are housed in a housing of the mixing device 370. As shown in fig. 7 and 8, the detergent and the cleaning liquid are received from the three-way valve through pipes. The mixed liquid in the mixing section 370 may be provided to the base assembly 100 and/or the surface cleaning apparatus through a third conduit 431. For example, an inlet interface 375 and an outlet interface 376 may be provided on the housing of the mixing section 370, wherein the inlet interface 375 may receive the detergent and the cleaning liquid and the outlet interface 376 may provide the mixed liquid to the third conduit. It will be appreciated by those skilled in the art that instead of a three-way valve as described above, the mixing section 370 may be provided with separate inlets for receiving the cleaning agent and cleaning liquid, respectively.

In the present disclosure, the inlet interface 375 may be disposed corresponding to the first impeller portion 371. As shown in fig. 10 (showing the internal structure), the first impeller portion 371 may include a plurality of first blades, wherein the blade surfaces of the first blades may be configured as arc surfaces to receive the impact force and/or the gravity of the liquid entering through the inlet interface 375, so that the first impeller portion 371 may rotate by the liquid from the inlet interface 375. The first impeller portion 371 may be fixedly secured to the transmission shaft 373, and the second impeller portion 372 may also be fixedly secured to the transmission shaft 373. When the first impeller portion 371 rotates, the transmission shaft 373 will be driven to rotate, so that the second impeller portion 372 also rotates. In the present disclosure, the first impeller portion 371 may be regarded as a rotation driving portion, and the second impeller portion 372 may be regarded as a rotation driven portion. The inlet of the second conduit 421 may be arranged adjacent to the second impeller portion 372, but may of course also be arranged elsewhere, for example in a top wall or side wall of the mixing device. The cleaning liquid such as cleaning water and the like and the cleaning agent such as detergent and the like, which enter the mixing device 370, are mixed by the rotation of the second impeller portion 372, and thus, the second impeller portion 372 serves as a stirring device. The mixed liquid may be supplied to the outside through a third pipe 431 provided near the bottom of the mixing device 370 after the mixing is sufficient.

The driving shaft 373 may be supported on the top surface of the mixing device 370 by the first bearing 3731 and supported on the bottom surface of the mixing device 370 by the second bearing 3732, which may effectively reduce the rotational resistance and avoid the generation of noise. The first and

second impeller portions

371, 372 may be fixed to the drive shaft 373 by axial and radial fastening means, respectively. As an example, the first impeller portion 371 may be secured to the drive shaft 373 by a first axial snap spring 3733 and a first radial snap groove 3734, and the second impeller portion 372 may be secured to the drive shaft 373 by a second axial snap spring 3735 and a second radial snap groove 3736. By this fixing means, it is possible to effectively prevent the first impeller portion 371 and the second impeller portion 372 from jumping radially and axially during operation. Of course, it will be appreciated by those skilled in the art that other forms of securing may be used. According to the internal arrangement mode of the mixing device disclosed by the invention, various advantages such as compactness, low noise, low cost and the like can be realized.

In the present disclosure, the direction of impingement of the fluid F into the mixing device 370 from the inlet interface 375 may be radial to the blades, see, e.g., fig. 11 and 12. Alternatively, the force receiving point of each blade of the first impeller portion 371 may be located at the middle position of the blade, so that the first impeller portion 371 can be rotated well by the fluid impact, and the impact direction of the fluid may be substantially the radial direction of the blade. Each of the blades of the first impeller portion 371 is formed in an arc surface, and an axial included angle of the arc-shaped blade may range from 5 ° to 85 °. For example, from the lower portion of the arc-shaped blade to the upper portion of the arc-shaped blade (the up and down as referred to herein means the up and down in the state where the arc-shaped blade is in the operating state), the angle of the arc-shaped blade is gradually decreased with respect to the axial direction of the drive shaft. Thus, the arc-shaped blades have a predetermined inclination angle with respect to a direction perpendicular to the axial direction of the drive shaft. And each blade of the first impeller portion 371 is inclined in the rotation direction from the lower portion of the blade to the upper portion of the blade.

In the present disclosure, rather than providing the inlet interface 375 at the upper sidewall of the mixing device 370, the inlet interface 375 may also be provided at the top of the mixing device 370 and the incoming fluid may be directed at the blades, such as by the kinetic and potential energy of the fluid causing the first impeller portion 371 to rotate, as described above.

Each blade of the second impeller portion 372 is an arc surface, and the axial included angle range of the arc-shaped blade may be 5 ° to 85 °. For example, from the upper portion of the arc-shaped blade to the lower portion of the arc-shaped blade (the up and down as referred to herein means the up and down in the state where the arc-shaped blade is in the operating state), the angle of the arc-shaped blade is gradually decreased with respect to the axial direction of the drive shaft. Thus, the arc-shaped blades have a predetermined inclination angle with respect to a direction perpendicular to the axial direction of the drive shaft 373. And each blade of the second impeller portion 372 is inclined against the rotation direction from the upper portion of the blade to the lower portion of the blade, so that the cleaning agent and the cleaning liquid can be more sufficiently agitated by the second impeller portion 372 as the agitating means.

According to the mixing device 370 disclosed by the present disclosure, under the condition of a certain space, the kinetic energy and potential energy of the entering cleaning liquid can be fully utilized to complete the stirring and mixing of the mixed liquid, thereby realizing various advantages of low noise, low cost, etc. Therefore, in the mixing device disclosed by the invention, a good stirring effect can be realized without using a motor and a speed reducing device.

Further, in the second maintenance assembly 300, an air flow generating device may be further provided, wherein the air flow generating device may include a first air flow generating device 510 and a second air flow generating device 520. The airflow provided by the first airflow generating device 510 is transmitted to the first inlet 512 of the susceptor assembly 100 through the first airflow port 511, and a heating device such as a PTC heater may be disposed near the first inlet 512 so as to heat the airflow by the heater to form a hot airflow for drying treatment. The hot air flow provided by the second air flow generating device 520 is delivered to the second inlet 522 of the base assembly 100 through the second air flow opening 521, and a heating device such as a PTC heater may be provided near the second inlet 522 so as to heat the air flow by the heater to form a hot air flow for drying treatment.

As an alternative embodiment, a liquid level detection device 374 may also be disposed in the mixing device 370, wherein the liquid level detection device 374 may be used to detect the height of the liquid level in the mixing device 370. Therein, the liquid level detection device 374 may be used to detect a lower liquid level threshold and an upper liquid level threshold in the mixing device 370. The level detection means 374 may be formed by one detector, or may be formed by more than two detectors to detect the lower level threshold and the upper level threshold. Here, three liquid level detection means are shown, wherein a first liquid level detection means may be used for detection of a lower liquid level threshold, a second liquid level detection means may be used for detection of a higher liquid level threshold, and a third liquid level detection means may be used in cooperation with the first liquid level detection means and the second liquid level detection means, respectively, for verification, etc.

According to an example of the present disclosure, the detergent storage part 340 is a detachable structure with respect to the second maintenance assembly 300, and the detergent storage part 340 can be replaced by a user. As shown in fig. 13, a housing 3410 in which a cleaning agent storage part 340 can be accommodated on the second maintenance assembly 300, the cleaning agent storage part 340 can also be inserted into the housing 3410, for example, the housing 3410 can be provided with an opening into which the cleaning agent storage part 340 is inserted (for example, can be provided at an upper portion of the second maintenance assembly 300). In order to allow locking and unlocking of the detergent storage part 340, a reset lock 3420 may be further included as an embodiment, wherein locking and unlocking of the detergent storage part 340 are achieved by cooperation of the reset lock 3420 and a locking structure of the detergent storage part 340 described below. Further, the user may insert and fix or eject the detergent storage part 340 by pressing it to be unlocked, and according to one embodiment, may further include a return spring 3430, and the return spring 3430 may be used at least to eject the detergent storage part 340. Further, the return spring 3430 may be in direct contact with the return latch 3420, and preferably, an ejector 3440 may be provided, wherein the ejector 3440 may be disposed between the return spring 3430 and the return latch 3420 so that the return latch 3420 is ejected by the elastic force of the return spring 3430 when the detergent storage part 340 is in the unlocked state, for example, the return latch 3420 may be ejected by the elastic force applied to the ejector 3440. In the present disclosure, an ejection spring 3450 may be further provided, and the ejection spring 3450 may cooperate with the ejector 3460 to eject the detergent storage part 340 from the housing 3410.

The self-locking resilient structure of the detergent storage part 340 according to an embodiment of the present disclosure will be described in detail below.

Fig. 13 shows a case where the cleaning agent storage 340 is placed in the housing 3410. Wherein, the lower portion of the housing 3410 may be provided with an opening 3411, and the outlet end 3401 of the detergent storage part 340 may pass through the opening 3411 so as to be engaged with the reset catch 3420 and to supply the detergent to the mixing apparatus. As shown in fig. 14, the outlet end 3401 may be configured to include a guide channel and a groove, wherein the outlet end 3401 may be configured to cooperate with the protrusions 3421 of the reset shackle 3420 to achieve the switching between the locked state and the unlocked state. The outlet end 3401 may include an indentation 3402, wherein the indentation 3402 may be accessible by the protrusion 3421.

As shown in fig. 15, the outlet end 3401 may further include a first guide channel 3403 and a retaining groove 3404. Wherein the first guide passage 3403 is used to connect the notch 3402 and the retaining groove 3404 so that, in the case where the detergent storage part 340 is pressed, the entering protrusion 3421 from the notch 3402 will slide into the retaining groove 3404 along the first guide passage 3403, for example, can slide into the retaining groove 3404 along the guide wall of the first guide passage 3403. Wherein the height of the limiting groove 3404 is higher than the height of the gap 3402, and the first guide channel 3403 extends upward from the gap 3402 to the limiting groove 3404, which may be arc-shaped and may include two sidewalls to form a channel. The first sidewall 3403a may have an end located above the notch 3402 (spaced apart from the notch 3402 by a certain distance, and one end of the first sidewall 3403a may be deviated at a central position of the notch 3402, for example, in a direction away from the stopper groove 3404) as a starting point, and an end point provided to the stopper groove 3404. The second side wall 3403b starts at the notch 3402, and the end point may be disposed below the limiting groove 3404 (spaced apart from the limiting groove 3404). The third side wall 3404a of the groove corresponding to the first side wall 3403a may be disposed in a straight plane (perpendicular to a horizontal plane on which the boundary of the notch is located) so as to define the position of the protrusion 3421. It should be noted that, during the process of sliding the protrusion 3421 into the limiting groove 3404, the reset lock 3420 rotates because the detergent storage part 340 is stationary.

The outlet end 3401 may further include a second guide passage 3405, the second guide passage 3405 including a fourth side wall 3405a, a fifth side wall 3405b, and a sixth side wall 3405c, and being substantially V-shaped. And a locking groove 3405d is provided between the fourth side wall 3405a and the fifth side wall 3405 b. After the projection enters the latching groove, the projection abuts against the latching groove due to an elastic force of a return spring described below, so that the detergent storage part 340 is latched. The outlet end 3401 may further include a non-limiting groove 3406 in which one end of a fourth sidewall 3405a meets one end of a second sidewall 3403b, and the other end of the fourth sidewall 3405a meets one end of a fifth sidewall 3405 b. One end of the fourth sidewall 3405a is located at a higher height than the other end of the fourth sidewall 3405 a. And the other end of the fifth sidewall 3405b is located at a higher height than the one end of the fifth sidewall 3405 b. One end of the sixth sidewall 3405c is connected to one end of the third sidewall 3404a and the other end extends to the non-limiting groove 3406, and the one end of the sixth sidewall 3405c is located at a lower height than the other end of the sixth sidewall 3405 c. When the protrusion 3421 is located in the position-limiting groove 3404 and the detergent storage part 340 is in a locked state, if the detergent storage part 340 is pressed again, the detergent storage part 340 will bring the reset lock 3420 together and move downward. When the user finishes pressing, the protrusions 3421 will enter the second guide channels 3405 due to the rotation of the reset lock 3420 and the elastic force of the reset spring 3430, and the protrusions 3421 will enter the non-limiting grooves 3406 along with the rotation of the reset lock 3420 by the guiding action of the side walls of the second guide channels. The detergent storage part 340 is lifted up by a predetermined height.

After that, the user can take out the detergent storage part 340. During removal, the protrusion 3421 can slide along the third guide channel 3407 until the protrusion 3421 moves to the next notch, so that the detergent storage part 340 can be separated from the reset lock 3420. The third guide passage 3407 may include a seventh side wall 3407a and an eighth side wall 3407b, wherein one end of the seventh side wall 3407a may be joined with the other end of the fifth side wall 3405b, and the other end of the seventh side wall 3407a may extend to the next gap. One end of the eighth sidewall 3407b may be connected with the non-limiting groove 3406, and the other end may be connected with the first sidewall of the next self-locking resilient structure.

In the above embodiments, one of the self-locking rebound structures is described, which can be arranged circumferentially around the outlet end 3401 so that the protrusions 3421 can pass from one structure to another, so that the self-locking rebound operation can be repeated. In the present disclosure, four structures may be provided around the circumference of the outlet end 3401 so that when the reset lock 3420 is rotated 90 °, it may be switched from one structure to another, thereby allowing the self-locking rebounding operation to be performed again. However, the number of the structures may be other, for example, six structures, and in the case of six structures, the reset lock 3420 rotates by 60 ℃ each time to perform the next self-locking rebound operation. In addition, in the case of four structures, four protrusions 3421 are correspondingly disposed on the reset lock 3420, and in the case of six structures, six protrusions 3421 are correspondingly disposed on the reset lock 3420, and the number of the protrusions may be correspondingly set. Wherein, this structure can be provided with N to the bellying also can set up to N, also can set up to other quantity, in the switching process of locking state and non-locking state each time, reset hasp 3420 can rotate 360 °/N angle at every turn.

During the rotation of the reset lock 3420, since there is an elastic force of the reset spring 3430, when the user releases the detergent storage part 340 after pressing the detergent storage part 340, the reset lock 3420 is subjected to an upward elastic force due to the elastic force of the reset spring 3430 and is pushed up (e.g., may be applied to the reset lock 3420 by the push-out member 3440), so that after the protrusion 3421 is disengaged from the locking groove, the protrusion 3421 enters the third guide path due to the elastic force of the reset spring 3430, and the protrusion 3421 enters the non-limiting groove 3406 as the reset lock 3420 rotates.

Further, an ejection spring 3450 and an ejector 3460 may be further provided, wherein the ejection spring 3450 is engaged with the ejector 3460 for ejecting at least a portion of the detergent storage part 340 to the outside of the housing. Among them, the lifters 3460 may contact with the bottom surface of the detergent storage part 340 and may pass through the housing 3410.

According to one example of the present disclosure, the reset lockout 3420 may be a ring-like structure, such as shown in fig. 15, and the protrusions 3421 may be located on an inner circumferential surface of the reset lockout 3420. And a stopping structure 3422 may be further disposed on the reset lock 3420. The latching structure 3422 may correspond to the latching recess 3412 provided in the housing 3410. As an example, a latching recess 3412 corresponding to the latching structure 3422 may be provided on the bottom outer surface of the housing 3410. As shown in fig. 15, the latching structure 3422 may be provided on the outer circumferential surface of the reset shackle 3420, and may be an arm portion extending from the outer circumferential surface, and a latching protrusion may be provided at an end of the arm portion. For example, the latching projection may slide into the latching recess 3412 at least when the detergent storage part 340 is in a locked state, so as to restrict the rotation of the reset lock 3420.

Although the above-described resilient latch structure is described in the present disclosure in connection with a base station, it will be understood by those skilled in the art that the resilient latch structure may be used in other aspects and is not limited to the base station described in the present disclosure.

According to the technical solution of the present disclosure, the cleaning agent storage part 340 is separately provided from the cleaning liquid storage part 350 and the recovery liquid storage part 360 and is disposed at the rear side of the adjacent position of the cleaning liquid storage part 350 and the recovery liquid storage part 360. The user can lock only by pressing the detergent storage 340 and unlock by pressing again. This eliminates the need for a release button or the like.

Generally, the detergent storage part 340 may be replaced to be inserted into the second maintenance assembly 300, but there may be a case where a leakage or the like occurs in the detergent storage part 340.

In the present disclosure, a two-stage check valve may be provided inside the outlet end 3401 of the detergent storage part 340. Two-stage check valves may be provided upstream and downstream of the fluid. Wherein the first stage check valve may be disposed upstream of the fluid and the second stage check valve may be disposed downstream of the fluid. Thus, the leakage condition can be effectively prevented by the two-stage sealing structure.

A suitable one-way valve may be selected in the present disclosure to prevent leakage from occurring. Preferably in the present disclosure, the first stage one-way valve may be a duckbill valve, wherein the duckbill valve may be made of a soft material, such as soft gel. The second stage check valve may be a beaded check valve. The beaded one-way valve can include a sealing bead that can be received in a support body that can be received inside the outlet end 3401, as well as a support body.

Fig. 16 is an exploded view of the detergent storage part 340, and fig. 17 is a sectional view of the detergent storage part 340. A first stage check valve 3471, for example in the form of a duckbill valve, may be disposed within the outlet end 3401 at an upstream location, for example adjacent the inlet of the outlet end 3401. And a second stage check valve in the form of a sealing bead may be provided at a downstream location, such as an outlet adjacent the outlet end 3401. Second-stage check valve 3472 may include a sealing bead 3473 and a support 3474. The sealing bead 3473 may be made of glass or the like. The support body may be made of a flexible material. The sealing bead 3473 disposed inside the support body may move inside the support body 3474. The support 3474 may be designed to have a notch in the present disclosure, for example, as shown in fig. 16, the support 3474 can be opened and closed to allow the sealing bead 3473 to move. Furthermore, a blocking structure may be further disposed inside the supporting body 3474, and the sealing bead 3473 may perform a one-way sealing function when abutting against the blocking structure 3476. The blocking structure may be arranged at a lower position of the support body. The support 3474 may be designed to limit the travel of the seal bead 3473. For example, a stop structure 3477 may be provided, wherein the stop structure 3477 may be configured such that when the sealing bead is lifted, the sealing bead may move upstream. When the sealing bead is not jacked up, the limiting structure 3477 may apply a pressure to the sealing bead 3473 toward the downstream, so that the sealing bead 3473 abuts against the blocking structure, thereby achieving the sealing effect.

When the cleaning agent storage part 340 is mounted to the second maintenance assembly 300, the docking port provided to the second maintenance assembly 300 or the jacking structure provided at the docking port may jack up the sealing bead 3473, so that the sealing bead 3473 moves upstream and the sealing bead 3473 is disengaged from the blocking structure, thereby allowing the liquid to be discharged. Furthermore, a pump device, such as a peristaltic pump, can be provided in the base station in order to draw liquid out of the cleaning agent reservoir 340. The sealing ball may also perform a sealing function to prevent residual liquid from flowing out when the detergent storage part 340 is taken out.

Generally, there is a risk of leakage when the detergent storage part 340 is inverted or pressed. The solution of the present disclosure, through the two-stage sealing form, if liquid leaks from the first stage seal, the leakage risk will be greatly reduced due to the presence of the second stage seal. And after the base station is placed, the sealing bead is jacked up, so that the liquid discharge is not influenced.

In the description of the present specification, reference to the description of "one embodiment/mode", "some embodiments/modes", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims

1. A mixing device that is provided in a base station of a surface cleaning device and that mixes and stirs a cleaning liquid and a cleaning agent entering the mixing device, comprising:

a transmission shaft rotatably disposed inside the accommodating space;

wherein the cleaning liquid and the detergent in the accommodating space are agitated by the second impeller portion rotating to form a mixed liquid.

2. The mixing device of claim 1,

the first inlet allows the cleaning liquid and the cleaning agent to enter the containing space, or

3. The mixing device of claim 1, wherein the second impeller portion is disposed below the first impeller portion.

4. A mixing apparatus according to claim 3, wherein the first inlet is provided in a side upper or top wall of the housing.

5. A mixing apparatus according to claim 4, wherein the lower or bottom side walls of the housing are provided with discharge openings allowing the mixed liquid to be provided to the exterior of the housing.

6. The mixing device of claim 4, wherein the first impeller portion comprises two or more first blades distributed circumferentially about the drive shaft, the first inlet and the first blades configured to: the first impeller portion is rotated by kinetic energy, or kinetic and potential energy, of the cleaning liquid and/or cleaning agent.

7. A mixing apparatus according to claim 6, wherein the direction of impact of the cleaning liquid and/or cleaning agent on the first blade is substantially radial to the first blade.

8. The mixing device of claim 6, wherein each first blade is a cambered surface that extends outwardly and upwardly relative to the drive shaft.

9. The mixing device of claim 8, wherein along the direction of extension of the arcuate surface, the angle between the direction of extension of the arcuate surface and the axial direction of the drive shaft decreases.

10. A mixing apparatus according to claim 9, wherein said included angle is in the range of 5 ° to 85 °.

11. The mixing device of claim 6, wherein the first blade is shaped relative to the drive shaft to: is bent from the inside outwards against the direction of rotation of the first impeller section and from the top downwards against the direction of rotation of the first impeller section.

12. A mixing device according to claim 6, wherein the point of impact of the first blade with the cleaning liquid and/or cleaning agent is located substantially in the middle of the first blade.

13. The mixing device of claim 4, wherein the second impeller portion comprises two or more second blades, the two or more second blades being circumferentially distributed about the drive shaft.

14. The mixing device of claim 13, wherein each second blade is an arcuate surface extending outwardly and downwardly relative to the drive shaft.

15. The mixing device of claim 14, wherein along the direction of extension of the arcuate surface, the angle between the direction of extension of the arcuate surface and the axial direction of the drive shaft decreases.

16. The mixing device of claim 15, wherein said included angle is in the range of 5 ° to 85 °.

17. The mixing device of claim 13, wherein the second blade is shaped relative to the drive shaft to: is bent from the inside to the outside in the rotation direction of the second impeller portion and is bent from the top to the bottom against the rotation direction of the second impeller portion.

18. A mixing apparatus according to any of claims 1 to 17, wherein the first and second ends of the drive shaft are respectively disposed at the top and bottom of the housing by bearings.

19. The mixing device according to any one of claims 1 to 17, wherein the first impeller portion is fixed to the drive shaft by axial and radial fastening means, and/or the second impeller portion is fixed to the drive shaft by axial and radial fastening means.

20. The mixing device of any one of claims 1 to 17, further comprising a liquid level detection device that detects a liquid level height of the holding space to compare the liquid level height to a liquid level threshold, the liquid level threshold comprising at least one of a minimum liquid level threshold and a maximum liquid level threshold.

21. A base station of a surface cleaning apparatus, the base station for docking the surface cleaning apparatus, comprising:

a cleaning liquid supply part for supplying a cleaning liquid;

a detergent supply part for supplying detergent; and

the mixing device of any one of claims 1 to 20, which receives the cleaning liquid and the cleaning agent, and which stirs to form the mixed liquid.