CN219878771U - Spraying device and cleaning robot - Google Patents

Abstract

The utility model relates to a spraying device and a cleaning robot. The spraying device comprises an atomization box, an atomization module, a liquid storage box and a pump body; the atomization box is provided with an atomization cavity for storing disinfectant and an atomization channel communicated with the atomization cavity; the atomizing module is arranged in the atomizing cavity and is used for atomizing the disinfectant in the atomizing cavity; the liquid storage tank is provided with a liquid storage cavity for storing disinfectant; the pump body is provided with a pump body inlet and a pump body outlet, the pump body inlet is communicated with the liquid storage cavity, and the pump body outlet is communicated with the atomizing cavity. The scheme provided by the utility model can improve the efficiency of environment disinfection.

Description

Spraying device and cleaning robot

Technical Field

The utility model relates to the technical field of environmental cleaning, in particular to a spraying device and a cleaning robot.

Background

In recent years, epidemic diseases frequently occur, and it is necessary to use a disinfectant to purify air and destroy viruses and bacteria in environments where many people are present, such as hospitals, shops, supermarkets, large office buildings, and the like.

In the related art, a spraying device is arranged on a cleaning robot, and after a disinfectant is atomized by an atomization box in the spraying device, the disinfectant is sprayed into the environment, so that the environment is subjected to the functions of purifying air and eliminating viruses and bacteria.

However, during spraying, the atomized disinfection solution is easy to recondense to form water drops, so that water is accumulated in a spraying channel, and when the accumulated water is serious, even liquid disinfection drops fall on the shell of the cleaning robot and flow out of the spraying channel, thereby causing waste of the disinfection solution and inconvenience in later cleaning and maintenance.

Disclosure of Invention

In order to solve or partially solve the problems in the related art, the utility model provides the spraying device and the cleaning robot, which can timely recover the disinfectant condensed into water drops, and avoid the waste of the disinfectant and the inconvenience of later cleaning and maintenance.

The first aspect of the utility model provides a spraying device, which comprises an atomization box, an atomization module, a liquid storage box, a pump body and a reflux plate; the atomization box is provided with an atomization cavity for storing disinfectant and an atomization channel communicated with the atomization cavity; the atomizing module is arranged in the atomizing cavity and is used for atomizing the disinfectant in the atomizing cavity; the liquid storage tank is provided with a liquid storage cavity for storing disinfectant; the pump body is provided with a pump body inlet and a pump body outlet, the pump body inlet is communicated with the liquid storage cavity, and the pump body outlet is communicated with the atomizing cavity; the reflux plate is arranged in the atomizing cavity, and the reflux plate is adjacent to the atomizing channel so as to enable water drops formed by condensation of the atomized disinfectant to reflux into the atomizing cavity.

Further, the atomizing box is arranged in the liquid storage cavity, and the pump body is arranged between the bottom wall of the liquid storage cavity and the bottom of the atomizing box.

Further, the atomization device also comprises an overflow module, wherein the overflow module is arranged on the bottom wall of the atomization cavity, the overflow module is provided with an overflow channel, an inlet of the overflow channel is communicated with the atomization cavity, and an outlet of the overflow channel is communicated with the liquid storage cavity.

Further, a liquid injection port is formed in the bottom wall of the atomizing cavity, and the liquid injection port is communicated with the pump body outlet.

Further, the atomizing box comprises a box body and a cover body, the cover body is covered on the opening of the box body, the atomizing cavity is formed by the cover body and the box body in a surrounding mode, and the atomizing channel is formed in the cover body.

Further, the atomization device also comprises a fan, wherein the fan is arranged on the cover body in the atomization cavity, the fan is positioned in the middle of the cover body, and the air outlet of the fan faces the bottom wall of the atomization cavity; the spraying channels are multiple, and the multiple spraying channels are arranged at the positions, close to the edges, of the cover body.

Further, the return plate extends in the direction of the inlet of the spray channel.

Further, the return plate extends in a direction perpendicular to the bottom wall of the atomizing chamber, or the return plate extends in a direction oblique to the bottom wall of the atomizing chamber.

Further, the return plate is at least partially immersed in the sterilizing fluid.

Further, a plurality of openings are formed in the backflow plate, and the openings are arranged at intervals along the extending direction of the backflow plate.

Further, the device also comprises a spray pipe arranged on the atomization box, and the spray pipe is communicated with a spray channel on the atomization box.

Further, a shutter structure for guiding liquid drops formed by condensation to flow back into the atomizing cavity is arranged in the atomizing pipe.

A second aspect of the utility model provides a cleaning robot comprising a spraying device according to any one of the aspects above and a robot body; the spraying device is arranged on the robot body.

The technical scheme provided by the utility model can comprise the following beneficial effects: according to the utility model, the reflux plate is arranged in the atomizing cavity, so that the atomized disinfectant is adhered to the reflux plate arranged adjacent to the atomizing channel during the period that the atomized disinfectant enters the atomizing channel from the atomizing cavity, and is refluxed into the liquid disinfectant again through the reflux plate, the utilization rate of the disinfectant is improved, and meanwhile, the amount of the liquid disinfectant entering the atomizing channel is reduced, so that the occurrence of water accumulation in the atomizing channel is avoided, the risk that the disinfectant overflows to the outside is further reduced, and the inconvenience in later maintenance is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.

Fig. 1 is a schematic structural view of a cleaning robot according to an embodiment of the present utility model.

FIG. 2 is a schematic elevational view of a spray device according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a spray device according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the direction of air flow of a spray device according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a spray device according to an embodiment of the present utility model;

FIG. 6 is a schematic illustration of a primary exploded view of a spray device according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a secondary analysis of a spray device according to an embodiment of the present utility model;

fig. 8 is a schematic diagram of a tank structure of an atomizing tank of the atomizer shown in the embodiment of the present utility model;

FIG. 9 is a schematic view of another housing structure of an atomizer housing of the atomizer device according to the embodiment of the utility model;

fig. 10 is a schematic diagram showing a cover structure of an atomizing tank of the atomizer according to the embodiment of the present utility model.

Reference numerals:

1-cleaning robot, 2-wheel, 3-cleaning device, 4-radar device, 5-spraying device,

10-an atomization box, 11-an atomization cavity, 12-a liquid injection port, 13-a box body, 14-a cover body, 15-a spray channel, 16-a reflux plate, 17-a spray pipe, 18-a shutter structure and 19-a sealing gasket;

a 20-degree of atomization module, wherein the atomization module,

30-liquid storage tank, 31-liquid storage cavity, 32-sterilizing bag fixing bracket, 33-liquid level pipe, 34-indicator lamp, 35-liquid filling port, 36-high level sensor, 37-low level sensor, 38-valve structure,

40-a pump body,

a 50-overflow module for the overflow of the water,

60-fans.

Detailed Description

Embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While embodiments of the present utility model are illustrated in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the utility model. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiment of the utility model provides a cleaning robot, which comprises a spraying device 5 and a robot body, wherein the spraying device 5 is arranged on the robot body. As shown in fig. 1, the cleaning robot according to the present utility model may be any device having a floor cleaning function, for example, a hand propelled, driving type, self-propelled floor cleaning vehicle/scrubber, sweeping vehicle/sweeper, sanitation vehicle, cleaning machine, dust collecting vehicle/dust cart, etc.; the system can also be equipment such as a floor cleaning vehicle/floor cleaning machine, a floor sweeping vehicle/floor sweeping machine, a floor sweeping robot, an environmental sanitation vehicle, a cleaning machine, a dust collecting vehicle/dust pushing vehicle and the like which are realized by utilizing an automatic driving technology.

In order to realize the cleaning function, the cleaning robot body is generally provided with wheels 2, a cleaning device 3 and the like so that the cleaning robot can move and clean the ground, wherein the cleaning device 3 can be one or a combination of a plurality of rolling brushes, side brushes, water absorbing rakes and the like, and the utility model is not limited to the above.

In order to enable the cleaning robot to automatically operate, the cleaning robot may be further provided with a radar device 4 or the like for sensing external obstacles.

The following describes in detail a specific embodiment of the spraying device 5 with reference to the accompanying drawings:

in the related art, a spraying device 5 is provided on a cleaning robot, and a disinfectant is sprayed into the environment after being atomized by an atomization box 10 in the spraying device 5, so that the environment is subjected to the functions of purifying air and eliminating viruses and bacteria.

However, during spraying, the spraying device 5 is easy to recondense to form water drops due to atomized disinfection solution, so that the spraying channel 15 is water-accumulated, and when the water accumulation is serious, even liquid disinfection solution drops fall on the shell of the cleaning robot and flow out of the spraying channel 15, thereby causing waste of the disinfection solution and inconvenience in cleaning and maintenance in the later period.

Aiming at the problems, the embodiment of the utility model provides the spraying device 5, which can timely recover the disinfectant condensed into water drops, and avoid the waste of the disinfectant and the inconvenience of cleaning and maintenance in the later period

The following describes the technical scheme of the embodiment of the present utility model in detail with reference to the accompanying drawings.

As shown in fig. 2 to 3, an embodiment of the present utility model provides a spraying device 5, which includes an atomization tank 10, an atomization module 20, a liquid storage tank 30, a pump body 40, and a return plate 16. Wherein the atomizing tank 10 has an atomizing chamber 11 for storing a sterilizing liquid and a spray passage 15 communicating with the atomizing chamber 11. The atomizing module 20 is arranged in the atomizing cavity 11 and is used for atomizing disinfectant in the atomizing cavity 11, and after the disinfectant is atomized by the atomizing module 20, atomized disinfectant is formed in the atomizing cavity 11 and sprayed into the environment through the spraying channel 15. The liquid storage tank 30 has a liquid storage chamber 31 for storing a sterilizing liquid to provide an additional sterilizing liquid storage space, and the liquid storage tank 30 and the atomizing tank 10 are relatively fixedly provided on the cleaning robot 1. The pump body 40 is provided with a pump body 40 inlet and a pump body 40 outlet, the pump body 40 inlet is communicated with the liquid storage cavity 31, and the pump body 40 outlet is communicated with the atomization cavity 11. The reflux plate 16 is disposed in the atomizing chamber, and the reflux plate 16 is disposed adjacent to the atomizing channel 15 for allowing water droplets formed by condensation of the atomized disinfectant to reflux into the atomizing chamber 11.

Specifically, the atomization module 20 generates the spray by adopting an ultrasonic principle, that is, the atomization module 20 is an ultrasonic atomization module 20. The atomizing module 20 may be submerged in the sterilizing fluid of the atomizing chamber 11, such as on the bottom wall of the atomizing chamber 11, or on the side walls of the atomizing chamber 11.

In particular, the pump body 40 may be a submersible pump.

When the disinfectant is insufficient in the atomizing cavity 11, the pump body 40 works to suck the disinfectant in the liquid storage cavity 31 from the inlet of the pump body 40 and discharge the disinfectant into the atomizing cavity 11 from the outlet of the pump body 40 to supplement the disinfectant in the atomizing cavity 11. The setting of liquid reserve tank 30 provides extra storage space for the antiseptic solution, when the antiseptic solution surplus in atomizing chamber 11 is not enough, in time the antiseptic solution in the extraction liquid reserve chamber 31 of pump body 40 supplements into atomizing chamber 11 for atomizer 5 can last long-time disinfect, need not frequently to supplement the antiseptic solution, has improved the efficiency of environment disinfection.

Meanwhile, the reflux plate 16 is arranged in the atomizing cavity 11, so that atomized disinfectant is attached to the reflux plate 16 arranged adjacent to the atomizing channel 15 during the period that the atomized disinfectant enters the atomizing channel 15 from the atomizing cavity 11, and is refluxed into the liquid disinfectant through the reflux plate 16, the utilization rate of the disinfectant is improved, the quantity of the water drops entering the atomizing channel 15 is reduced, water accumulation in the atomizing channel 15 is avoided, the risk that the disinfectant overflows to the outside is further reduced, and the inconvenience of later maintenance is reduced.

The fact that the return plate 16 is arranged adjacent to the spray channel 15 means that the return plate 16 is sufficiently close to the spray channel 15 so that the mist of sterilizing fluid passes through the return plate 16 and contacts the return plate 16 before entering the spray channel 15, so that the water droplets mixed in the mist of sterilizing fluid can adhere to the return plate 16.

To achieve what is referred to herein as a return plate 16 disposed adjacent the spray channel 15, in one embodiment, the return plate 16 may be disposed to extend in the direction of the inlet of the spray channel 15. The inlet direction of the spray passage 15 means the direction in which the mist-like sterilizing liquid enters the spray passage 15, and as shown in fig. 4, the inlet direction of the spray passage 15 is vertically upward, and therefore, the return plate 16 is also provided vertically upward. Further, a return plate 16 may also be provided at the outer edge of the spray channel 15 to avoid that the return plate 16 obstructs the entry of mist sterilizing fluid into the spray channel 15. In this embodiment, the extending direction of the return plate 16 is set in association with the spray channel 15, so that the return plate 16 can recover as much of the disinfectant condensed into water droplets as possible, and reduce the number of water droplets entering the spray channel 15.

In order to realize the utility model, the return plate 16 is arranged adjacent to the spray channel 15, in other embodiments, the return plate 16 may be arranged to extend perpendicular to the bottom wall of the atomizing chamber, or the return plate 16 may be arranged to extend in a direction inclined to the bottom wall of the atomizing chamber, so long as the return plate 16 is arranged adjacent to the spray channel 15 and is capable of playing a role in allowing water droplets formed by condensation of the mist disinfectant to flow back into the atomizing chamber 11.

In one embodiment, referring to fig. 4, return plate 16 is at least partially immersed in the sanitizing liquid. Along with the movement of the cleaning robot, the liquid level of the disinfectant in the atomizing cavity 11 in the atomizer inevitably fluctuates, which is unfavorable for atomization and atomization, but in the embodiment, the reflux plate 16 is partially immersed into the disinfectant, so that the wave-isolating effect is achieved, the vibration fluctuation of the liquid level of the disinfectant is restrained, the calm of the liquid level is maintained, and the normal operation of the atomizer is ensured.

In one embodiment, referring to fig. 4, the reflow plate 16 is provided with a plurality of openings for blocking large atomized particles, and the plurality of openings are spaced along the extending direction of the reflow plate 16.

Optionally, as shown in fig. 2, in order to intuitively and clearly determine the liquid level of the sterilizing liquid in the atomizing chamber 11 and the liquid storage chamber 31, observation windows or liquid level pipes 33 are provided on the outer side surfaces of the atomizing tank 10 and the liquid storage tank 30.

Optionally, as shown in fig. 2, a liquid filling opening 35 is disposed on the outer surface of the liquid storage tank 30, and the liquid filling opening 35 is communicated to the liquid storage cavity 31, so that the disinfectant is added into the liquid storage cavity 31 through the outside, and the liquid filling opening 35 is disposed at a position with a certain height, and can also be used as an overflow opening for placing the liquid level in the liquid storage cavity 31 to be too high.

Optionally, a drain port is disposed at the bottom of the liquid storage tank 30, and is connected to the liquid storage cavity 31, and a valve body structure 38, such as a ball valve, is disposed in the drain port, so as to drain the disinfectant in the liquid storage cavity 31.

Optionally, as shown in fig. 2 and 3, a sterilization wrap fixing bracket 32 is provided at the bottom of the liquid storage tank 30 to fix the sterilization wrap on the spraying device 5. Optionally, a power switch is arranged on the disinfection package to control the work and power-off of the disinfection package. Optionally, an indicator light 34 is provided on the surface of the tank 30 to indicate the operational status of the disinfection pack.

In one embodiment, as shown in fig. 2 to 8, the atomizing tank 10 is disposed in the liquid storage chamber 31, and the pump body 40 is disposed between the bottom wall of the liquid storage chamber 31 and the bottom of the atomizing tank 10. Through installing the atomizing case 10 in the liquid storage chamber 31, on the one hand, reduced atomizer 5's whole occupation volume, on the other hand, the distance between liquid storage chamber 31 and the atomizing chamber 11 is nearer, has reduced the pump body 40's head demand to the cost of the pump body 40 has been reduced.

Specifically, as shown in fig. 2 to 7, during assembly, the atomizing tank 10 is mounted in the liquid storage tank 30, a flange structure adapted to the outer peripheral edge of the opening of the liquid storage chamber 31 is provided on the outer peripheral edge of the atomizing tank 10, for example, near the outer peripheral edge of the opening of the atomizing chamber 11, and through holes and bolt hole structures are correspondingly provided on the flange structure and the outer peripheral edge of the opening of the liquid storage chamber 31, so that the atomizing tank 10 is fixed on the liquid storage tank 30 by bolts, so that the atomizing tank 10 is mounted in the liquid storage chamber 31.

In an embodiment, as shown in fig. 3, 4, 8 and 9, the device further includes an overflow module 50, where the overflow module 50 is disposed on the bottom wall of the atomizing chamber 11, the overflow module 50 has an overflow channel, an inlet of the overflow channel is connected to the atomizing chamber 11, and an outlet of the overflow channel is connected to the liquid storage chamber 31. In this embodiment, by setting the overflow module 50, when the level of the disinfectant in the atomizing chamber 11 is too high, the redundant disinfectant can flow back to the liquid storage chamber 31 through the overflow channel of the overflow module 50, so as to avoid the problem that the disinfectant in the atomizing chamber 11 is too high in level, and thus insufficient space is left to form spray.

Specifically, as shown in fig. 2 and 3, the overflow module 50 includes a cylindrical structure disposed on a bottom wall of the atomizing chamber 11 and a floating cover 14 disposed on an end of the cylindrical structure facing away from the bottom wall of the atomizing chamber 11, the overflow channel is disposed in the cylindrical structure, an inlet of the overflow channel is disposed on an outer peripheral wall of the cylindrical structure, and an outlet of the overflow channel is disposed at a bottom of the cylindrical structure and is communicated with the liquid storage chamber 31 at a lower side of the atomizing tank 10. When the liquid level of the disinfectant is low, the floating cover 14 seals the inlet of the overflow channel under the action of self gravity; when the liquid level of the disinfectant is too high, the floating cover 14 floats up under the action of buoyancy force applied to the floating cover and opens the inlet of the overflow channel, and the disinfectant enters the overflow channel from the inlet of the overflow channel, so that the liquid level of the disinfectant is reduced until the floating cover 14 blocks the inlet of the overflow channel again under the action of gravity.

In other embodiments, the overflow module 50 may also be a pressure switch valve that opens to open the overflow channel when the level of the sterilizing fluid is too high.

In one embodiment, as shown in fig. 9, a liquid injection port 12 is disposed on the bottom wall of the atomizing chamber 11, and the liquid injection port 12 is in communication with the outlet of the pump body 40. In this embodiment, the disinfectant is injected into the bottom of the atomizing chamber 11, so that the fluctuation of the liquid level of the disinfectant is small, which is favorable for forming spray.

Specifically, the atomization module 20 is embedded on the bottom wall of the atomization cavity 11, and the liquid injection port 12 is formed on the atomization module 20, so that the disinfectant can be rapidly atomized.

Specifically, the number of the atomizing modules 20 may be plural, for example, the number of the atomizing modules 20 is two, and the overflow module 50 is also disposed at the bottom of the atomizing chamber 11 and between the two atomizing modules 20.

In addition, the liquid filling port 12 can also serve as an overflow port to prevent the disinfectant from being excessively high in level. When the liquid level of the disinfectant is too high, the pump body 40 stops working, and the disinfectant flows back into the pump body 40 through the liquid injection port 12 and flows back into the liquid storage cavity 31 from the pump body 40.

Optionally, a low sensor 37 of the liquid storage chamber 31 and a high sensor 36 of the liquid storage chamber 31 are provided on the surface of the liquid storage tank 30 to sense the liquid level of the sterilizing liquid. A warning module such as a buzzer may also be provided to warn the user when an abnormality occurs in the liquid level.

In an embodiment, as shown in fig. 2 to 10, the atomization box 10 includes a box body 13 and a cover body 14, the cover body 14 is covered on an opening of the box body 13, the atomization cavity 11 is enclosed by the cover body 14 and the box body 13, and the spraying channel 15 is opened on the cover body 14. Specifically, the cover 14 is detachably connected to the case 13, so that maintenance of the structure installed in the atomizing chamber 11 is facilitated.

More specifically, the cover 14 is provided with a hole corresponding to the through hole on the flange structure, and the bolts pass through the hole on the cover 14, the through hole on the flange structure and are detachably connected to the bolt holes on the periphery of the opening of the liquid storage cavity 31, so that the steps of mounting and dismounting are simplified.

Optionally, a sealing gasket 19 is disposed between the cover 14 and the case 13 to seal the atomizing chamber 11 to avoid leakage of the disinfectant.

In an embodiment, as shown in fig. 2, 3, 6, 7 and 10, the fan 60 is disposed on the cover 14 in the atomizing chamber 11, the fan 60 is located in the middle of the cover 14, and an air outlet of the fan 60 faces to the bottom wall of the atomizing chamber 11; the spraying channels 15 are provided in a plurality, and the spraying channels 15 are arranged at the position of the cover 14 close to the edge. After the atomizing module 20 forms the spray, the fan 60 is started, air flows into the atomizing chamber 11, the spray is extruded to a position close to the edge of the atomizing chamber 11, and the spray is carried out from the spray channel 15, so that the spray is sprayed out.

Specifically, two spraying passages 15 are provided, the spraying chamber is substantially rectangular, the cover 14 is substantially rectangular plate-shaped, the spraying passages 15 are provided on opposite sides of the cover 14 in the longitudinal direction, and the fan 60 is mounted in the middle of the cover 14.

In one embodiment, as shown in fig. 2 to 7, the spray pipe 17 is further provided on the atomization tank 10, and the spray pipe 17 is in communication with the spray channel 15 on the atomization tank 10. When spraying, the spray enters the spray pipe 17 from the spray passage 15, and is ejected under the guiding action of the spray pipe 17, so that the spray direction can be controlled.

Specifically, the outlet of the spray tube 17 is directed in the forward direction of the cleaning robot. Specifically, the number of the spray pipes 17 and the number of the spray channels 15 are plural and correspond one to one.

In addition, the spray pipe 17 can also be used as a filling port of disinfectant, so that the structure is compact, and the space utilization rate is high.

In one embodiment, as shown in fig. 2 and 5, a shutter structure 18 is disposed in the spray tube 17 for guiding the condensed droplets to flow back into the atomizing chamber 11. By means of the louver structure 18, on the one hand, droplets of the sterilizing liquid formed by condensation can be collected again, and the droplets of the sterilizing liquid are prevented from falling onto the housing of the spraying device 5 or the cleaning robot, and on the other hand, the spraying direction can be regulated and controlled by the louver structure 18.

Specifically, the louver structure 18 includes a plurality of rotatable vanes that are disposed at intervals in a vertical direction, which is a direction perpendicular to the spraying direction of the spray pipe 17. Typically, the plurality of blades are each inclined downwardly so that the spray can be directed to the ground to kill the ground.

The aspects of the present utility model have been described in detail hereinabove with reference to the accompanying drawings. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required for the present utility model. In addition, it can be understood that the steps in the method of the embodiment of the present utility model may be sequentially adjusted, combined and pruned according to actual needs, and the modules in the device of the embodiment of the present utility model may be combined, divided and pruned according to actual needs.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (13)

1. A spray device, comprising:

the atomization box is provided with an atomization cavity for storing disinfectant and an atomization channel communicated with the atomization cavity;

the atomizing module is arranged in the atomizing cavity and used for atomizing the disinfectant in the atomizing cavity;

a liquid storage tank having a liquid storage chamber for storing a sterilizing liquid;

the pump body is provided with a pump body inlet and a pump body outlet, the pump body inlet is communicated with the liquid storage cavity, and the pump body outlet is communicated with the atomizing cavity; and

the backflow plate is arranged in the atomizing cavity and is adjacent to the atomizing channel so as to enable water drops formed by condensation of the atomized disinfectant to flow back into the atomizing cavity.

2. The spray device of claim 1, wherein the atomizing tank is disposed within the reservoir, and the pump body is disposed between a bottom wall of the reservoir and a bottom of the atomizing tank.

3. The spray device of claim 2, further comprising an overflow module disposed on a bottom wall of the atomizing chamber, the overflow module having an overflow channel with an inlet communicating with the atomizing chamber and an outlet communicating with the liquid storage chamber.

4. The spraying device of claim 2, wherein a liquid filling port is provided in a bottom wall of the atomizing chamber, and the liquid filling port is communicated with the pump body outlet.

5. The spray device of claim 1, wherein the atomizing tank comprises a tank body and a cover body, the cover body is covered on the opening of the tank body, the atomizing cavity is surrounded by the cover body and the tank body, and the spray channel is formed on the cover body.

6. The spray device of claim 5, further comprising a fan disposed on the cover within the atomizing chamber, the fan being in the middle of the cover, an air outlet of the fan being directed toward the bottom wall of the atomizing chamber;

the number of the spraying channels is multiple, and the spraying channels are arranged at the positions, close to the edges, of the cover body.

7. The spray device of claim 1, wherein the return plate extends in the direction of the inlet of the spray channel.

8. A spraying device as claimed in claim 1, in which the return plate extends in a direction perpendicular to the atomising chamber bottom wall, or in a direction inclined to the atomising chamber bottom wall.

9. The spray device of claim 8, wherein said return plate is at least partially immersed in said sanitizing liquid.

10. The spraying device of claim 9, wherein the return plate is provided with a plurality of openings, the plurality of openings being spaced apart along the direction of extension of the return plate.

11. The spray device of claim 1, further comprising a spray tube disposed on the atomization tank, the spray tube in communication with a spray channel on the atomization tank.

12. A spray device as claimed in claim 11 wherein a shutter arrangement is provided in the spray tube for directing the return flow of condensed droplets into the atomising chamber.

13. A cleaning robot comprising a spraying device according to any one of claims 1 to 12.