Surface cleaning device

Abstract

The utility model discloses a surface cleaning device, which belongs to the technical field of cleaning equipment, and comprises a machine body and a ground brush which are pivotally connected, the ground brush is provided with a sewage suction port, the machine body is provided with a sewage barrel, the sewage barrel comprises a barrel body and a barrel cover, the barrel body is provided with a sewage inlet pipe communicated with the sewage suction port, the barrel cover is provided with an exhaust channel, and a separation part is arranged in the sewage barrel. The inner cavity of the sewage barrel is divided into a first cavity and a second cavity which are communicated by the partition part, the upper end opening of the sewage inlet pipe extends into the first cavity, an inlet of the exhaust channel is formed in the cavity wall of the second cavity, and an anti-surge plate is arranged in the first cavity and is lower than the communication position between the first cavity and the second cavity; and at least two anti-surge plates are arranged in the height direction of the sewage bucket at intervals. The surge amplitude of the dirty liquid in the first cavity is reduced step by step through the at least two anti-surge plates, the situation that the dirty liquid with the large surge amplitude directly flows into the second cavity through the communication position between the two cavities is avoided, and therefore the situation that the dirty liquid flowing into the second cavity flows towards the dirt suction fan in the machine body along with dirt suction airflow is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a surface cleaning device. Background Art

[0002] Existing surface cleaning machines generally include a body, a floor brush, a liquid supply component and a dirt suction component. The floor brush is provided with a dirt suction port and a cleaning member driven by a motor. The liquid supply component supplies liquid to the cleaning member so that the cleaning member can absorb the liquid and wet it before wiping the floor. The dirt suction fan provides suction to form a dirt suction airflow that can suck the dirt into a sewage bucket through the dirt suction port.

[0003] In order to enable the surface cleaning machine to clean the floor in low spaces such as under the bed, sofa, and cabinet, the body of some existing surface cleaning machines can be rotated backward at a large angle relative to the floor brush to a lying state, and the lying body can drive the floor brush to extend into the low space for cleaning. Since the sewage bucket is generally arranged on the body, when the sewage bucket lies backward with the body, the height of the suction fan, the sewage bucket, the pipe opening of the sewage inlet pipe in the sewage bucket and other structures decreases with the inclination of the body, and the height difference between the liquid level in the sewage bucket and the suction fan is greatly reduced. When the power of the suction fan remains unchanged, the head of the sewage liquid flowing from the suction port on the floor brush through the sewage inlet pipe into the sewage bucket remains unchanged. When lying down, the sewage liquid flowing from the sewage inlet pipe into the sewage bucket moves toward the suction fan to a position closer to the bucket cover under the action of negative pressure suction. The sewage liquid flowing into the sewage bucket can move to a position closer to the exhaust channel on the bucket cover, and the sewage liquid may even enter the body and pollute the suction fan.

[0004] Based on the above technical defects, some existing sewage buckets use partitions to divide the inner cavity into two upper and lower cavities, and the dirt flowing in from the sewage inlet pipe falls into the lower cavity, and the airflow flows through the upper cavity and is discharged. The partition is used to block the surging dirty liquid to prevent the dirty liquid from following the airflow and flowing toward the sewage suction fan. However, when the user adjusts the body and the sewage bucket to a flat state during the cleaning process and pushes and pulls the body back and forth to perform cleaning work, the dirty liquid in the lower cavity is prone to a large degree of shaking, and the shaking dirty liquid is easy to flow into the upper cavity through the connecting port of the two chambers. Since the sewage bucket is lying flat, the sewage suction fan and the sewage bucket are almost at the same height, and the height difference between the liquid level of the dirty liquid in the sewage bucket and the sewage suction fan is greatly reduced, and the dirty liquid flowing into the upper cavity is more likely to follow the sewage suction airflow to flow to the sewage suction fan, which is not conducive to ensuring the working performance of the sewage suction fan. Utility Model Content

[0005] In order to solve the shortcomings and deficiencies existing in the above-mentioned prior art, the utility model provides a surface cleaning device, which gradually reduces the surge amplitude of the dirty liquid in the first chamber through at least two anti-surge plates, thereby preventing the dirty liquid with a large surge amplitude from directly flowing into the second chamber through the connecting point between the two chambers, thereby preventing the dirty liquid flowing into the second chamber from following the sewage suction airflow to flow toward the sewage suction fan in the fuselage.

[0006] In order to achieve the above technical objectives, the utility model provides a surface cleaning device, including a pivotally connected body and a floor brush, the floor brush is provided with a sewage suction port, the body is provided with a sewage bucket, the sewage bucket includes a barrel body and a barrel cover, the barrel body is provided with a sewage inlet pipe connected to the sewage suction port, the barrel cover is provided with an exhaust channel, a partition is provided in the sewage bucket, the partition divides the inner cavity of the sewage bucket into a first chamber and a second chamber that are connected, the upper port of the sewage inlet pipe extends into the first chamber, the inlet of the exhaust channel is provided on the cavity wall of the second chamber, a surge plate is provided in the first chamber, the surge plate is lower than the connection between the first chamber and the second chamber, and at least two surge plates are provided at intervals along the height direction of the sewage bucket.

[0007] Preferably, each of the surge protection plates includes a baffle plate arranged perpendicular to the height direction of the sewage bucket.

[0008] Preferably, the surge plate has a first surge plate near the connection between the first chamber and the second chamber, the first surge plate includes a baffle and a straight plate, the baffle is arranged perpendicular to the height direction of the sewage bucket, the straight plate extends along the height direction of the sewage bucket, and the straight plate is arranged lower than the partition in the thickness direction of the sewage bucket.

[0009] Preferably, the straight plate extends from the upper edge of the baffle toward the upper port of the sewage inlet pipe; or, one end of the straight plate extends from the upper edge of the baffle toward the upper port of the sewage inlet pipe, and the other end of the straight plate extends from the upper edge of the baffle toward the barrel cover, and the projection of the connection between the first chamber and the second chamber in the thickness direction of the sewage barrel falls within the straight plate.

[0010] Preferably, the surge-proof plate also has a second surge-proof plate away from the connection between the first chamber and the second chamber, the second surge-proof plate is arranged perpendicular to the height direction of the sewage bucket, and the height of the second surge-proof plate protruding relative to the side wall of the barrel body is smaller than that of the first surge-proof plate.

[0011] Preferably, the projection of the connection point between the first chamber and the second chamber in the height direction of the sewage bucket falls within at least one surge protection plate.

[0012] Preferably, the surge-proof plate includes a first surge-proof plate and a second surge-proof plate, the height of the first surge-proof plate protruding relative to the side wall of the barrel body is greater than that of the second surge-proof plate, and the projection of the connection between the first chamber and the second chamber in the height direction of the sewage barrel falls within the first surge-proof plate.

[0013] Preferably, the second surge-proof plate is located below the first surge-proof plate in the height direction of the sewage bucket; or, two second surge-proof plates are provided at intervals in the height direction of the sewage bucket, and the first surge-proof plate is located between the two second surge-proof plates.

[0014] Preferably, a dirt shield covering an upper port of the dirt inlet pipe is provided in the barrel body, the top of the dirt shield is connected to the partition, and the anti-surge plate is arranged on the outside of the dirt shield in the left and right directions.

[0015] Preferably, the barrel cover is provided with a liquid level detection component which passes through the anti-surge plate and extends into the first chamber, the liquid level detection component has at least a pair of detection parts which are arranged lower than the anti-surge plate in the height direction of the sewage barrel and are spaced apart on the left and right, and the liquid level detection component is at least lower than the front edge of one of the anti-surge plates in the thickness direction of the sewage barrel.

[0016] After adopting the above technical solution, the utility model has the following advantages:

[0017] 1. The surface cleaning device provided by the utility model utilizes a partition to divide the inner cavity of the sewage bucket into a first chamber and a second chamber which are interconnected. The first chamber serves as a sewage holding chamber, and the second chamber serves as a buffer chamber. The sewage liquid flowing in from the sewage inlet pipe following the sewage suction airflow falls into the first chamber, and the sewage suction airflow passes through the second chamber and then flows to the sewage suction fan through the exhaust channel. The second chamber has a buffering and isolating effect, which can prevent the sewage liquid in the first chamber from following the sewage suction airflow and directly flowing to the exhaust channel, thereby preventing the sewage liquid from easily following the sewage suction airflow and flowing toward the sewage suction fan, thereby ensuring the working performance stability of the sewage suction fan.

[0018] An anti-surge plate is arranged in the first chamber, the anti-surge plate is arranged lower than the connecting point between the two chambers, and at least two anti-surge plates are arranged at intervals along the height direction of the sewage bucket. The surge amplitude of the sewage in the first chamber is gradually reduced by at least two anti-surge plates, so as to avoid the sewage with a large surge amplitude directly flowing into the second chamber through the connecting point between the two chambers, thereby avoiding the sewage flowing into the second chamber to flow toward the sewage suction fan in the fuselage following the sewage suction airflow. In particular, when the fuselage lies backwards so that the height difference between the liquid level in the sewage bucket and the exhaust passage on the bucket cover is greatly reduced, the surge amplitude of the dirty liquid in the first chamber can be greatly reduced by at least two anti-surge plates. Even if a small amount of dirty liquid with a large surge amplitude passes over the first anti-surge plate and is located between two adjacent anti-surge plates, since there is less dirty liquid located between the two anti-surge plates, the surge amplitude of the dirty liquid is greatly reduced, and the second anti-surge plate can also block the surging dirty liquid, thereby preventing the dirty liquid in the first chamber from easily passing over the anti-surge plate and flowing into the second chamber from the connecting point of the two chambers, thereby preventing the dirty liquid flowing into the second chamber from easily following the sewage suction airflow to flow to the sewage suction fan, thereby ensuring the working performance stability of the sewage suction fan.

[0019] 2. When the body is pushed and pulled forward and backward by the user, the dirty liquid in the first chamber surges up and down under the action of inertia. Each surge protection plate includes a baffle plate arranged perpendicular to the height direction of the surge protection plate. The layout structure of each surge protection plate relative to the barrel body is reasonably arranged so that each surge protection plate can effectively block the dirty liquid surging up and down in the first chamber, thereby preventing the dirty liquid in the first chamber from easily crossing the surge protection plate and flowing into the second chamber through the connecting portion between the two chambers.

[0020] 3. The first surge-proof plate arranged near the connection point of the two chambers adopts a structure combining a baffle and a straight plate. The baffle is arranged perpendicular to the height direction of the sewage bucket, and the straight plate is arranged along the height direction of the sewage bucket, that is, the straight plate of the first surge-proof plate is arranged perpendicular to the baffle, and the straight plate is arranged lower than the partition in the thickness direction of the sewage bucket. When the sewage bucket is in a lying state, the straight plate is located below the partition, and the surging or splashing sewage can fall back downward under the blocking effect of the straight plate, thereby preventing the splashing droplets from crossing the surge-proof plate and entering the second chamber.

[0021] 4. The straight plate can extend from the upper edge of the baffle toward the upper port of the sewage inlet pipe. At this time, the first surge-proof plate is roughly L-shaped. The straight plate can also extend toward the upper port of the sewage inlet pipe at one end and toward the barrel cover at the other end. At this time, the first surge-proof plate is roughly T-shaped. The specific structure of the first surge-proof plate is reasonably set so that the upward surging sewage can fall back downward under the blocking effect of the straight plate.

[0022] 5. The second surge-proof plate away from the connection between the two chambers is arranged perpendicular to the height direction of the sewage bucket, and the height of the second surge-proof plate relative to the side wall of the barrel body is preferably smaller than that of the first surge-proof plate. The specific structure of the second surge-proof plate is reasonably arranged. When the sewage bucket is in a lying state, the straight plate of the second surge-proof plate effectively blocks the sewage liquid that passes over the first surge-proof plate upward, so that the sewage liquid that passes over the first surge-proof plate can fall back under the blocking effect of the straight plate, thereby avoiding the situation in which the sewage liquid with a large surge amplitude in the first chamber passes over the straight plate of the second surge-proof plate and flows into the second chamber after passing over the first surge-proof plate.

[0023] 6. The projection of the connecting point of the two chambers in the height direction of the sewage bucket falls within at least one surge-proof plate. When the sewage bucket is in a lying state, the upper edge of at least one surge-proof plate is higher than the connecting point of the two chambers. The sewage liquid with a large surge amplitude in the first chamber can be effectively blocked by the surge-proof plate, thereby preventing the sewage liquid with a large surge amplitude from continuing to surge toward the second chamber after passing over the lower surge-proof plate.

[0024] 7. When two surge-proof plates are provided, the projection of the connection point of the two chambers in the height direction of the sewage bucket falls within the first surge-proof plate, and the second surge-proof plate with a smaller height can be located below the first surge-proof plate with a larger height. Alternatively, two second surge-proof plates with a smaller height can also be provided at intervals, and the first surge-proof plate with a larger height is located between the two second surge-proof plates. The height relationship of the surge-proof plates is reasonably set so that the surge-proof plate structure is distributed in a staggered manner to ensure the blocking effect of the surge-proof plate structure on the surging sewage.

[0025] 8. A dirt shield is provided in the barrel body, and the dirty liquid flowing in from the dirt inlet pipe flows downward into the first chamber along the dirt shield, which can prevent the dirty liquid from spreading along the partition and entering the second chamber. The anti-surge plate is provided on the outside of the dirt shield in the left and right directions, and the distribution position of the anti-surge plate relative to the dirt shield is reasonably set, so that the anti-surge plate can meet the requirements of blocking the surging dirty liquid while avoiding obstruction to the dirty liquid flowing from the dirt inlet pipe into the first chamber.

[0026] 9. The barrel cover is provided with a liquid level detection member. In the height direction of the sewage barrel, the detection part of at least one pair of liquid level detection members is lower than the anti-surge plate. In the thickness direction of the sewage barrel, at least one pair of liquid level detection members is lower than the front edge of one of the anti-surge plates. When the sewage barrel is in an inclined state or lying state, when the liquid level in the first chamber reaches the height of the detection member, the sewage barrel reaches the maximum sewage collection level, and the maximum sewage collection level is lower than the anti-surge plate, so that the anti-surge plate can effectively block the surging sewage in the first chamber during the sewage collection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the surface cleaning device of Example 1 in a placement state;

[0028] Figure 2 It is a structural diagram of a floor brush in a surface cleaning device of Example 1;

[0029] Figure 3 It is a schematic diagram of the surface cleaning device of Example 1 when the body is in a tilted state;

[0030] Figure 4 It is a schematic diagram of the surface cleaning device of Example 1 when the body is in a lying state;

[0031] Figure 5 An exploded view of a sewage bucket in a surface cleaning device in Example 1;

[0032] Figure 6 It is a structural diagram of a sewage bucket cover in a surface cleaning device of Example 1;

[0033] Figure 7 A cross-sectional view of a sewage bucket in a surface cleaning device according to Embodiment 1 along the front-to-back direction Figure 1 ;

[0034] Figure 8 A cross-sectional view of a sewage bucket in a surface cleaning device according to Embodiment 1 along the front-to-back direction Figure 2 ;

[0035] Fig. 9 It is a schematic diagram of a surface cleaning device in Example 1 when the sewage bucket is in a tilted state;

[0036] Fig.10 It is a schematic diagram of a sewage bucket in a surface cleaning device of Example 1 when it is in a lying state;

[0037] Fig.11 It is a structural diagram of the sewage bucket cover in the surface cleaning device of the second embodiment;

[0038] Fig.12 It is a schematic diagram of the surface cleaning device in the second embodiment when the sewage bucket is in a tilted state;

[0039] Fig.13 It is a schematic diagram of the sewage bucket in the surface cleaning device of the second embodiment when it is in a lying state;

[0040] Fig.14 This is a structural diagram of a sewage bucket cover in a surface cleaning device in Example 3;

[0041] Fig.15 It is a schematic diagram of the sewage bucket in the surface cleaning device of Example 3 when it is in a tilted state;

[0042] Fig.16 It is a schematic diagram of the sewage bucket in the surface cleaning device of Example 3 when it is in a lying state;

[0043] Fig.17 It is a structural diagram of a sewage bucket cover in the surface cleaning device of the fourth embodiment;

[0044] Fig.18 It is a schematic diagram of the surface cleaning device in the fourth embodiment when the sewage bucket is in a tilted state;

[0045] Fig.19 It is a schematic diagram of the sewage bucket in the surface cleaning device of the fourth embodiment when it is in a lying state;

[0046] Fig. 20 This is a structural diagram of the sewage bucket cover in the surface cleaning device of Example 5.

[0047] In the figure, 100-body, 110-handle bar, 120-contact point,

[0048] 200-floor brush, 210-sewage suction port, 220-floor brush body, 230-front cover, 240-installation cavity, 250-cleaning part, 260-scraping part, 270-floor scraper, 280-sewage suction channel,

[0049] 300-sewage barrel, 310-barrel body, 311-sewage inlet pipe, 320-barrel cover, 321-exhaust channel, 321a-inlet, 321b-outlet, 330-dirt shield, 340-anti-surge plate, 341-first anti-surge plate, 341a-baffle, 341b-straight plate, 342-second anti-surge plate, 350-partition, 351-rear plate, 352-bottom plate, 353 -connecting port, 361-first chamber, 362-second chamber, 370-liquid level detection member, 370a-first liquid level detection member, 370b-second liquid level detection member, 371-detection part, 371a-first detection part, 371b-second detection part, 381-upper cover shell, 382-lower cover shell, 383-accommodation chamber, 384-top plate, 385-contact sheet, 390-filter element,

[0050] 410-clean water bucket, 420-water distribution parts,

[0051] 500-sewage suction fan,

[0052] 600-Control panel. DETAILED DESCRIPTION

[0053] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following words indicating orientation or positional relationship such as "upper", "lower", "left", "right", "longitudinal", "lateral", "inner", "outer", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0054] Embodiment 1

[0055] Combination Figures 1 to 10 The first embodiment of the utility model provides a surface cleaning device, comprising a body 100 and a floor brush 200 which are pivotally connected, the floor brush 200 is provided with a sewage bucket 300, the sewage bucket 300 comprises a barrel body 310 and a barrel cover 320, the barrel body 310 is provided with a sewage inlet pipe 311 connected to the sewage inlet 210, and the barrel cover 320 is provided with an exhaust passage 321. A partition 350 is provided in the sewage bucket 300, the partition 350 divides the inner cavity of the sewage bucket 300 into a first chamber 361 and a second chamber 362 which are connected to each other, the upper end of the sewage inlet pipe 311 extends into the first chamber 361, and the inlet 321a of the exhaust passage 321 is provided on the wall of the second chamber 362. The first chamber 361 is provided with a surge protection plate 340 , which is lower than the connecting portion between the first chamber and the second chamber. At least two surge protection plates 340 are provided at intervals along the height direction of the sewage bucket 300 .

[0056] The partition 350 is used to divide the inner cavity of the sewage bucket 300 into a first chamber 361 and a second chamber 362 which are interconnected. The first chamber 361 serves as a sewage holding chamber, and the second chamber 362 serves as a buffer chamber. The sewage liquid flowing in from the sewage inlet pipe 211 following the sewage suction airflow falls into the first chamber 361, and the sewage suction airflow passes through the second chamber 362 and then flows to the sewage suction fan through the exhaust channel 321. The second chamber 362 has a buffering and isolating function, which can prevent the sewage liquid in the first chamber 361 from following the sewage suction airflow and directly flowing to the exhaust channel 321, thereby preventing the sewage liquid from easily following the sewage suction airflow and flowing toward the sewage suction fan, thereby ensuring the working performance stability of the sewage suction fan. At least two anti-surge plates 340 are used to gradually reduce the surge amplitude of the dirty liquid in the first chamber 361, thereby preventing the dirty liquid with a large surge amplitude from directly flowing into the second chamber 362 through the connection between the two chambers, thereby preventing the dirty liquid flowing into the second chamber 362 from following the sewage suction airflow and flowing toward the sewage suction fan in the fuselage 100. In particular, when the body 100 lies backward so that the height difference between the liquid level in the sewage bucket 300 and the exhaust passage 321 on the bucket cover 320 is greatly reduced, the surge amplitude of the dirty liquid in the first chamber 361 can be greatly reduced by at least two anti-surge plates 340. Even if a small amount of dirty liquid with a large surge amplitude passes over the first anti-surge plate and is located between two adjacent anti-surge plates, since the dirty liquid located between the two anti-surge plates is small, the surge amplitude of the dirty liquid is greatly reduced, and the second anti-surge plate can also block the surging dirty liquid, thereby preventing the dirty liquid in the first chamber 361 from easily passing over the anti-surge plate 340 and flowing into the second chamber 362 from the connecting point of the two chambers, thereby preventing the dirty liquid flowing into the second chamber 362 from easily following the sewage suction airflow to flow to the sewage suction fan, thereby ensuring the working performance stability of the sewage suction fan.

[0057] Combination Figure 1 In this embodiment, a handle bar 110 is provided at the top of the body 100, and the bottom of the body 100 is pivotally connected to the rear side of the floor brush 200. Figure 2The floor brush 200 includes a floor brush body 220 and a front cover 230 that can be detachably mounted on the front side of the floor brush body 220. When the front cover 230 is snap-fitted and mounted on the front side of the floor brush body 220, the two cooperate to form an installation cavity 240. A cleaning member 250 driven by a motor is arranged in the installation cavity 240. The cleaning member 250 can adopt a single roller brush structure, a double roller brush structure with a front and rear interval, or a crawler mop structure with two rollers of the same outer diameter or a thin front and a thick rear. No excessive restrictions are made here. The surface cleaning device also includes a clean water bucket 410 for supplying liquid to the cleaning member 250. The clean water bucket 410 can be detachably mounted on the front or rear side of the body 100. The liquid in the clean water bucket 410 can be sprayed to the cleaning member 250 through the water dividing member 420 on the floor brush 200 under the pumping action of the pump, so that the cleaning member 250 can absorb liquid and moisten. As a preferred solution of this embodiment, the water distribution member 420 can adopt the prior art method of dividing a water inlet waterway into two N (N is a natural number) to divert the water into multiple outlet waterways.

[0058] In this embodiment, the sewage suction port 210 is arranged on the floor brush body 220 in the middle of the left and right sides, and the sewage suction port 210 is located behind the installation cavity 240 and communicated with the installation cavity 240. A scraping member 260 for scraping the cleaning member 250 is arranged above the sewage suction port 210, and an elastic floor scraper 270 is arranged below the sewage suction port 210. A sewage suction channel 280 for connecting the sewage suction port 210 and the sewage bucket 300 is arranged between the body 100 and the floor brush 200, one end of the sewage suction channel 280 is communicated with the sewage suction port 210, and the other end of the sewage suction channel 280 is detachably connected to the lower end of the sewage inlet pipe 311.

[0059] The sewage bucket 300 can be detachably mounted on the body 100. A sewage suction fan 500 is provided in the body 100 and is located above the sewage bucket 300. When the sewage suction fan 500 is working, it provides suction force to form a sewage suction airflow flowing in from the sewage suction port 210. The sewage suction airflow flows into the sewage bucket 300 through the sewage suction channel 280 and the sewage inlet pipe 311, and then flows out of the sewage bucket 300 through the exhaust channel 321. A control panel 600 is also provided in the body 100. The sewage suction fan 500, the motor, the pump and other electrical components are controlled by the control panel 600. As an alternative to this embodiment, the sewage suction fan 500 can also be used as a component of the suction power source assembly. The suction power source assembly can be detachably mounted on the body 100, and the suction power source assembly can be connected to a dust suction accessory for dry dust suction.

[0060] In this embodiment, the sewage bucket 300 is detachably mounted on the rear side of the fuselage 100. The width of the sewage bucket 300 in the left-right direction is greater than the thickness in the front-back direction. Correspondingly, the width of the bucket cover 320 in the left-right direction is greater than the thickness in the front-back direction. The sewage bucket 300 is in a flat barrel shape as a whole. When the sewage bucket 300 is mounted on the fuselage 100, the fuselage 100 is relatively flat as a whole, so that the fuselage 100 lying backward can drive the floor brush 200 to extend into the low space for cleaning. It can be understood that the clean water bucket 410 and the sewage bucket 300 can be arranged at the front or rear side of the fuselage 100 at the same time, or can be arranged at the front and rear sides of the fuselage 100 respectively, and the clean water bucket 410 can also be arranged on the top of the floor brush 200.

[0061] Combination Figure 3 When the user is standing and using the surface cleaning device of this embodiment to perform routine cleaning on the floor, the body 100 is in a backward tilted state relative to the floor brush 200. At this time, the sewage bucket 300 is in a tilted state, and the body 100 has an angle α relative to the floor. The angle α is generally between 45° and 80°. Figure 4 When the user is in a squatting state and uses the surface cleaning device of this embodiment to clean the floor in a low space, the body 100 is in a lying state relative to the floor brush 200. At this time, the sewage bucket 300 is in a lying state, and the body 100 has an angle β with respect to the ground, and the angle β is generally between 0° and 15°.

[0062] Combination Figure 7 The sewage inlet pipe 311 extends from the bottom wall of the barrel body 310 toward the barrel cover 320, and the upper and lower ends of the sewage inlet pipe 311 are open, and the lower end of the sewage inlet pipe 311 can be connected with the sewage suction port 210 through the sewage suction channel 280. In this embodiment, when the sewage bucket 300 follows the body 100 to lie backward, in order to prevent the sewage in the first chamber 361 from flowing back from the sewage inlet pipe 311 to the sewage suction port 210, the sewage inlet pipe 311 is preferably arranged at the front side of the barrel body 310 and close to the front side wall of the barrel body 310, so that the upper end of the sewage inlet pipe 311 can be located at a higher position in the first chamber 361 as much as possible when the sewage bucket 300 follows the body 100 to lie backward. The sewage inlet pipe 311 can be integrally formed with the barrel body 310, or the sewage inlet pipe 311 can be separately formed and then fixed in the barrel body 310.

[0063] Combination Figure 5 , Figure 6In this embodiment, the barrel cover 320 mainly includes an upper cover shell 381 and a lower cover shell 382 fixed together, and the upper cover shell 381 and the lower cover shell 382 cooperate to form a receiving chamber 383 with an open top side. The sewage barrel 300 also includes a filter element 390 detachably installed in the receiving chamber 383. The suction airflow is filtered by the filter element 390 and then flows to the suction fan 500. As a preferred solution of this embodiment, the filter element 390 includes a filter screen and a HEPA element. The filter screen is located at the bottom of the HEPA element. The filter screen can perform gas-solid separation on the suction airflow, and the HEPA element can perform gas-liquid separation on the suction airflow. As an optional solution of this embodiment, the cavity wall of the receiving chamber 383 can be formed by the upper cover shell 381, or by the lower cover shell 382, ​​or by the upper cover shell 381 and the lower cover shell 382.

[0064] Combination Figure 8 As a preferred solution of this embodiment, the second chamber 362 is nested in the upper part of the front side of the first chamber 361, and the second chamber 362 is formed by the partition 350, the partial side wall of the barrel body 310 and the partial bottom wall of the barrel cover 320. The two chambers are preferably arranged in an embedded manner, which can reasonably reduce the thickness of the second chamber 362, and ensure the volume of the first chamber 361 as much as possible under the premise that the sewage barrel 300 adopts a flat structure, thereby ensuring the sewage collection capacity of the sewage barrel 300. In this embodiment, the partition 350 is preferably integrally formed with the lower cover shell 382, ​​and the partition 350 includes a rear plate 351 and a bottom plate 352. The rear plate 351 extends downward from the lower cover shell 382, ​​and the bottom plate 352 is roughly perpendicular to the height direction of the sewage bucket 300. The rear edge of the bottom plate 352 is connected to the lower edge of the rear plate 351. When the barrel cover 320 covers the barrel body 310, the rear plate 351 and the bottom plate 352 of the partition 350, the lower cover shell 382 of the barrel cover 320 and the partial front side wall of the barrel body 310 enclose to form a second chamber 362, and the other parts of the inner cavity of the sewage bucket 300 constitute the first chamber 361.

[0065] The volume of the first chamber 361 is V1, the volume of the second chamber 362 is V2, and 1 / 50≤V2 / V1≤1 / 12. In this embodiment, the height ratio of the second chamber 362 to the first chamber 361 in the height direction is about 1 / 5 to 1 / 4, the thickness ratio of the second chamber 362 to the first chamber 361 in the front-to-back direction is about 1 / 5 to 1 / 3, and the width ratio of the second chamber 362 to the first chamber 361 in the left-to-right direction is about 1 / 2 to 1. It can be understood that the height ratio of the second chamber 362 to the first chamber 361 can be set to a reasonable size such as 0.2, 0.22, 0.24, 0.25, the thickness ratio of the second chamber 362 to the first chamber 361 can be set to a reasonable size such as 0.2, 0.22, 0.24, 0.26, 0.28, 0.3, 0.32, 0.33, etc., and the width ratio of the second chamber 362 to the first chamber 361 can be set to a reasonable size such as 0.5, 0.6, 0.7, 0.8, 0.9, 1, etc.

[0066] Combination Figure 6 In this embodiment, a connecting port 353 for connecting the two chambers is provided on the partition 350, and the connecting port 353 is preferably provided on the rear plate 351. In order to prevent the dirty liquid flowing into the sewage bucket 300 from the sewage inlet pipe 311 from splashing everywhere following the sewage suction airflow, a dirt shield 330 is provided in the first chamber 361 to cover the upper end of the sewage inlet pipe 311. The lower edge of the dirt shield 330 is lower than the bottom plate 352 of the partition 350 in the height direction of the sewage bucket 300, and the dirty liquid flowing into the sewage bucket 300 from the sewage inlet pipe 311 flows downward along the dirt shield 330 into the first chamber 361. In order to make the communication port 353 and the inlet 321a of the exhaust passage 321 be staggered as much as possible, the top wall of the dirt shield 330 is higher than the bottom plate 352 of the partition 350 and lower than the lower cover shell 382 in the height direction of the sewage bucket 300, so that the top of the dirt shield 330 is higher than the part of the second chamber 362 in the height direction of the sewage bucket 300, the inlet 321a of the exhaust passage 321 is arranged above the dirt shield 330, and the communication port 353 is arranged on the left and right outer sides of the dirt shield 330, so that the communication port 353 and The exhaust passage 321 is not only staggered in the height direction of the sewage bucket 300, but also staggered in the left and right directions. The sewage suction airflow flowing from the connecting port 353 into the second chamber 362 needs to bypass the dirt shield 330 when flowing toward the inlet 321a of the exhaust passage 321. The dirt shield 330 is used to change the flow direction of the sewage suction airflow, so that the sewage liquid or water vapor following the sewage suction airflow can be thrown out or blocked by the dirt shield 330 under the centrifugal effect, thereby preventing the sewage liquid from following the sewage suction airflow into the sewage suction fan 500. As an optional solution of this embodiment, the connecting port 353 can be set only on the left side of the dirt shield 330, or only on the right side of the dirt shield 330, or the connecting port 353 can be set on both the left and right sides of the dirt shield 330.

[0067] Combination Figure 7 The exhaust channel 321 is roughly located between the top wall of the dirt shield 330 and the lower cover shell 382, ​​the inlet 321a of the exhaust channel 321 is arranged on the rear plate 351, and the outlet 321b of the exhaust channel 321 is directly connected to the accommodating chamber 383, so that the suction airflow flowing out of the exhaust channel 321 can be directly filtered by the filter element 390.

[0068] Combination Figure 6 In this embodiment, the surge-proof plate 340 is provided with two, namely, a first surge-proof plate 341 and a second surge-proof plate 342. The first surge-proof plate 341 and the second surge-proof plate 342 are both arranged lower than the partition 350 in the height direction of the sewage bucket 300 and are spaced apart from each other. Both surge-proof plates include baffles arranged perpendicularly to the height direction of the sewage bucket 300. In this embodiment, the first surge-proof plate 341 is arranged near the connecting port 353. The first surge-proof plate 341 includes a baffle 341a and a straight plate 341b. The baffle 341a is arranged perpendicularly to the height direction of the sewage bucket 300, and the straight plate 341b is arranged parallel to the height direction of the sewage bucket 300. The straight plate 341b extends from the upper edge of the baffle 341a toward the upper port of the sewage inlet pipe 211. The first surge-proof plate 341 is generally L-shaped. The second surge-proof plate 342 is disposed farther away from the connecting port than the first surge-proof plate 341 . The second surge-proof plate 342 is in a flat plate shape and is disposed perpendicularly to the height direction of the sewage bucket 300 .

[0069] In this embodiment, the two surge-proof plates protrude forward relative to the rear side wall of the barrel body 310, and the height H3 of the baffle plate 341a of the first surge-proof plate 341 protruding forward relative to the rear side wall of the barrel body is greater than the height H4 of the second surge-proof plate 342 protruding forward relative to the rear side wall of the barrel body, and the protruding height H3 of the first surge-proof plate 341 is less than the inner thickness of the first chamber 361. Specifically, the protruding height H3 of the first surge-proof plate 341 is approximately 3 / 4 of the inner thickness of the first chamber 361, and the protruding height H4 of the second surge-proof plate 342 is approximately 1 / 2 of the inner thickness of the first chamber 361.

[0070] Combination Fig. 9 When the sewage bucket 300 is in a tilted state, the two surge protection plates are distributed up and down and are both lower than the partition 350. Fig.10 When the sewage bucket 300 is in a lying state, the two surge protection plates are distributed front and back and are located in front of the partition 350 .

[0071] Since the sewage bucket 300 of this embodiment is relatively thin, and a forward-concave hand-holding recess is provided on the rear side wall of the barrel body 310, when the barrel cover 320 covers the barrel body 310, the distance between the dirt shield 330 and the hand-holding recess is very small, and the surge amplitude of the liquid here is also very small. The dirty liquid in the first chamber 361 mainly surges on the outside of the left and right sides of the dirt shield 330. Based on this, in this embodiment, the anti-surge plate 340 is mainly arranged on the outside of the left and right sides of the dirt shield 330. As a preferred embodiment of this embodiment, the dirt shield 330 is arranged in the center of the sewage bucket 330 in the left and right directions, and accordingly, the anti-surge plate 340 is arranged roughly symmetrically about the dirt shield 330. As an optional solution of the present embodiment, the dirt shield 330, the partition 350, the lower cover shell 382 and the anti-surge plate 340 can be integrally formed or separately formed and then fixed together. The dirt shield 330 and the anti-surge plate 340 can also be integrally formed and removably installed in the first chamber 361 by cooperating with the dirt inlet pipe 311. Of course, the anti-surge plate 340 can also be independently formed and removably installed on the bottom of the barrel cover 320 or removably installed in the first chamber 361 by cooperating structure.

[0072] In this embodiment, the barrel cover 320 is provided with two groups of liquid level detection members 370 extending downward into the first chamber 361, and the liquid level detection member 370 has a detection portion 371 located in the first chamber 361. The two groups of liquid level detection members 370 are respectively a first liquid level detection member 370a and a second liquid level detection member 370b, and the height of the first liquid level detection member 370a extending into the first chamber 361 is greater than the height of the second liquid level detection member 370b extending into the first chamber 361, and the first liquid level detection member 370a and the second liquid level detection member 370b are spaced apart along the thickness direction of the sewage barrel 300. When the sewage barrel 300 is in a tilted state, the first liquid level detection member 370a and the second liquid level detection member 370b are distributed front and back. When the sewage barrel 300 is in a lying state, the first liquid level detection member 370a and the second liquid level detection member 370b are distributed up and down.

[0073] Two first liquid level detection members 370a are provided and are respectively located on the left and right sides of the dirt shielding cover 330, and the lower ends of the two first liquid level detection members 370a are provided with a first detection portion 371a. Two second liquid level detection members 370b are also provided and are respectively located on the left and right sides of the dirt shielding cover 330, and the lower ends of the two second liquid level detection members 370b are provided with a second detection portion 371b. In this embodiment, both groups of liquid level detection members include a shell and a detection electrode inserted in the shell, and the lower end of the shell is provided with a through opening arranged away from the dirt shielding cover 330, and the portion of the detection electrode exposed at the through opening constitutes the detection portion 371. Preferably, the height of the first liquid level detection member 370a extending into the barrel body 310 is about 1 / 2 of the barrel body, and the height of the second liquid level detection member 370b extending into the barrel body 310 is about 1 / 3 of the barrel body. In the thickness direction of the sewage bucket 300, the distance between the first liquid level detection component 370a and the rear side wall of the barrel body is approximately 1 / 2 of the thickness of the first chamber 361, and the distance between the second liquid level detection component 370b and the rear side wall of the barrel body is approximately 1 / 3 of the thickness of the first chamber. The two sets of liquid level detection components are located between the straight plate 341b and the rear side wall of the barrel body 310 in the thickness direction of the sewage bucket 300.

[0074] In this embodiment, the first detection part 371a is arranged lower than the second detection part 371b in the height direction of the sewage bucket 300. In order to avoid the situation that the two detection parts of the same group of liquid level detection parts are easily mistakenly connected under the surging sewage and cause false alarms, the detection parts on the first liquid level detection part 370a and the second liquid level detection part 370b are both arranged to face away from the dirt shield 330, so that the two first detection parts 371a and the two second detection parts 371b are all arranged to face away from each other.

[0075] As a preferred solution of this embodiment, the detection parts 371 on the two groups of liquid level detection parts are arranged lower than the connecting port 353 in both the height direction and the thickness direction of the sewage bucket 300. When one group of liquid level detection parts fails, the detection part 371 of the other group of liquid level detection parts can be turned on before the liquid level reaches the connecting point of the two chambers to prevent the dirty liquid from entering the second chamber 362, thereby preventing the dirty liquid entering the second chamber 362 from following the sewage suction airflow and flowing toward the sewage suction fan 500. Further, the first liquid level detection part 370a passes through two anti-surge plates, the first detection part 371a is arranged lower than the second anti-surge plate 342, the second liquid level detection part 370b only passes through the baffle 341a of the first anti-surge plate 341, and the second detection part 371b is located between the two anti-surge plates.

[0076] In this embodiment, the bucket cover 320 includes a top plate 384 fixed to the top side, and the top plate 384 is provided with a plurality of contact pieces 385 spaced apart from each other. The detection electrodes of the two first liquid level detection members 370a are electrically connected to two different contact pieces, and the detection electrodes of the two second liquid level detection members 370b are also electrically connected to two different contact pieces. The body 100 is provided with a contact point 120 corresponding to the contact piece 385, and the contact point 120 is electrically connected to the control board 600. When the sewage bucket 300 is installed on the body 100, the contact piece 385 abuts against the contact point 120, so that the detection electrode of the liquid level detection member 370 is electrically connected to the control board 600.

[0077] In this embodiment, a sealing ring is provided on the circumference of the barrel cover 320, and sealing strips are provided at the positions where the partition 350 and the dirt shield 330 cooperate with the side wall of the barrel body 310. When the barrel cover 320 covers the barrel body 310, the sealing ring and the sealing strip both contact the inner wall of the barrel body 310.

[0078] Combination Fig. 9 When the sewage bucket 300 is in a tilted state, the two groups of liquid level detection members are basically distributed front and back, and the surging sewage in the first chamber 361 falls downward under the blocking effect of the two anti-surge plates. When the first detection parts 371a on the two first liquid level detection members 370a are connected through the sewage in the first chamber 361, the control board 600 determines that the sewage bucket 300 has reached the maximum sewage collection level according to the conduction signal of the first liquid level detection member 370a. The control board 600 can command the sewage suction fan 500 to stop working and can give a prompt to remind the user to clean the sewage bucket 300.

[0079] Combination Fig.10 When the sewage bucket 300 is in a lying state, the two groups of liquid level detection components are basically distributed up and down. The dirty liquid in the first chamber 361 is prone to surge when the user pushes and pulls the body 100 forward and backward. The two anti-surge plates 340 block the surging dirty liquid to reduce the surge amplitude of the dirty liquid. When a small amount of dirty liquid surges into between the two anti-surge plates, the first anti-surge plate 341 blocks the surging dirty liquid between the two anti-surge plates. The dirty liquid surging upward along the baffle 341a can fall back downward under the blocking effect of the straight plate 341b, thereby preventing the dirty liquid between the two anti-surge plates from surging toward the connecting port 232 and entering the second chamber 362. When the first detection parts 371a on the two first liquid level detection parts 370a or the second detection parts 371b on the two second liquid level detection parts 370b are conducted through the dirty liquid in the first chamber 361, the control board 600 determines that the sewage bucket 300 has reached the maximum sewage collecting level based on the conduction signal. The control board 600 can command the sewage suction fan 500 to stop working and can give a prompt to remind the user to clean the sewage bucket 300.

[0080] As an alternative to this embodiment, a notch may be provided at the lower portion of the left and right edges of the rear plate 351. When the barrel cover 320 covers the barrel body 310, the notch cooperates with the side wall of the barrel body 310 to form a connecting gap for connecting the two chambers. The connecting gap is higher than the maximum sewage collection level and the detection portion 371 of the liquid level detection member 370 in both the height direction and the thickness direction of the sewage barrel 300. The connecting gap and the above-mentioned connecting port 353 may be provided selectively or simultaneously.

[0081] As an alternative to this embodiment, the first liquid level detecting member 370 a or the second liquid level detecting member 370 b may also pass through the second chamber 362 and extend downward into the first chamber 361 .

[0082] As an alternative to this embodiment, the second surge protection plate 342 may also be designed to be an L-shaped structure similar to the first surge protection plate 341 .

[0083] As an alternative to the present embodiment, only one pair of liquid level detection members may be provided, in which case it is preferred to retain the first liquid level detection member 370a.

[0084] Embodiment 2

[0085] Combination Fig.11 , Fig.12 , Fig.13 In this embodiment, the baffle 341a and the straight plate 341b of the first surge-proof plate 341 are in a T-shaped structure. The straight plate 341b is arranged parallel to the height direction of the sewage bucket 300. The upper edge of the straight plate 341b extends toward the barrel cover 320 to be close to the lower cover shell 382 or extends to connect with the lower cover shell 382. The lower edge of the straight plate 341b extends toward the bottom wall of the barrel body 310 and is arranged higher than the second surge-proof plate 342.

[0086] The first detection portion 371a of the first liquid level detection member 370a is arranged lower than the second anti-surge plate 342 in the height direction of the sewage bucket 300, and the second detection portion 371b of the second liquid level detection member 370b is located between the baffle 341a and the second anti-surge plate 342 in the height direction of the sewage bucket 300. The detection portions of the two sets of liquid level detection members are both located between the straight plate 341b and the rear side wall of the barrel body 310 in the thickness direction of the sewage bucket 300.

[0087] Combination Fig.12When the sewage bucket 300 is in a tilted state, the two groups of liquid level detection components are basically distributed front and back, and the surging sewage in the first chamber 361 falls downward under the blocking effect of the two anti-surge plates. When the detection parts 371 on the two first liquid level detection components 370a are connected through the sewage in the first chamber 361, the control board 600 determines that the sewage bucket 300 has reached the maximum sewage collection level according to the conduction signal of the first liquid level detection components 370a. The control board 600 can command the sewage suction fan 500 to stop working and can give a prompt to remind the user to clean the sewage bucket 300.

[0088] Combination Fig.13 When the sewage bucket 300 is in a lying state, the two groups of liquid level detection components are basically distributed up and down. The dirty liquid in the first chamber 361 is prone to surge when the user pushes and pulls the body 100 forward and backward. The two anti-surge plates 340 block the surging dirty liquid to reduce the surge amplitude of the dirty liquid. When a small amount of dirty liquid surges into between the two anti-surge plates, the first anti-surge plate 341 blocks the surging dirty liquid between the two anti-surge plates. The dirty liquid surging upward along the baffle 341a can fall back downward under the blocking effect of the straight plate 341b, thereby preventing the dirty liquid between the two anti-surge plates from surging toward the connecting port 232 and entering the second chamber 362. When the first detection parts 371a on the two first liquid level detection parts 370a or the second detection parts 371b on the two second liquid level detection parts 370b are conducted through the dirty liquid in the first chamber 361, the control board 600 determines that the sewage bucket 300 has reached the maximum sewage collecting level based on the conduction signal. The control board 600 can command the sewage suction fan 500 to stop working and can give a prompt to remind the user to clean the sewage bucket 300.

[0089] The other structures of the second embodiment are the same as those of the first embodiment and will not be described in detail here.

[0090] Embodiment 3

[0091] Combination Fig.14 , Fig.15 , Fig.16In this embodiment, two surge-proof plates are arranged in the vertical direction of the sewage bucket 300, which are respectively a first surge-proof plate 341 and a second surge-proof plate 342. Both surge-proof plates are flat and arranged perpendicular to the height direction of the sewage bucket 300. The first surge-proof plate 341 is arranged close to the partition, and the second surge-proof plate 342 is arranged farther from the partition than the first surge-proof plate 341. The first detection portion 371a of the first liquid level detection member 370a is arranged lower than the second surge-proof plate 342 in the height direction of the sewage bucket 300, and the second detection portion 371b of the second liquid level detection member 370b is located between the two surge-proof plates 340 in the height direction of the sewage bucket 300. Two anti-surge plates 340 are used to gradually reduce the surge amplitude of the sewage in the first chamber 361, thereby preventing the sewage in the first chamber 361 from flowing into the second chamber 362 from the connecting port 353 or the connecting gap when the sewage bucket 300 is in a lying state, and further preventing the sewage flowing into the second chamber 362 from easily following the sewage suction airflow to the sewage suction fan, thereby ensuring the performance stability of the sewage suction fan.

[0092] In order to ensure the blocking effect of the surge plate on the surging sewage, in this embodiment, the height of the first surge plate 341 protruding from the rear side wall of the barrel body 310 is greater than the height of the second surge plate 342 protruding from the rear side wall of the barrel body 310. The protruding height of the first surge plate 341 is about 4 / 5 of the thickness of the first chamber 361, and the protruding height of the second surge plate 342 is about 1 / 2 of the thickness of the first chamber 361. Further, at least part of the projection of the connecting port 353 along the height direction of the sewage bucket falls within the first surge plate 341. When the sewage bucket 300 is in a lying state, the highest point of the first surge plate 341 is higher than part or all of the connecting port, ensuring the blocking effect of the first surge plate 341 on the surging sewage located between the two surge plates, and preventing the surging sewage located between the two surge plates from surging toward the connecting port 353 and entering the second chamber 362.

[0093] In order to prevent the surging dirty liquid between the two anti-surge plates from crawling along the first anti-surge plate 341 to the partition and spreading from the connecting port 353 into the second chamber 362, there should be a sufficient height difference between the first anti-surge plate 341 and the partition to prevent the dirty liquid from crawling.

[0094] The other structures of the third embodiment are the same as those of the first embodiment and will not be described in detail here.

[0095] Embodiment 4

[0096] Combination Fig.17 , Fig.18 , Fig.19In this embodiment, three surge-proof plates are arranged at intervals along the height direction of the sewage bucket 300, and the three surge-proof plates are all located below the partition in the height direction of the sewage bucket. Among them, one first surge-proof plate 341 is arranged, and two second surge-proof plates 342 are arranged, and the first surge-proof plate 341 is located between the two second surge-proof plates 342. The three surge-proof plates can be arranged at equal intervals or at non-equal intervals.

[0097] The height of the first anti-surge plate 341 protruding from the rear side wall of the barrel body 310 is greater than the height of the second anti-surge plate 342 protruding from the rear side wall of the barrel body 310. The protruding height of the first anti-surge plate 341 is about 4 / 5 of the thickness of the first chamber 361, and the protruding height of the second anti-surge plate 342 is about 1 / 2 of the thickness of the first chamber 361. At least part of the projection of the connecting port 353 along the height direction of the sewage bucket falls within the first anti-surge plate 341. When the sewage bucket 300 is in a lying state, the highest point of the first anti-surge plate 341 is higher than part or all of the connecting port 353, ensuring the blocking effect of the first anti-surge plate 341 on the surging sewage between the two anti-surge plates, and preventing the surging sewage between the two anti-surge plates from surging toward the connecting port 353 and entering the second chamber 362.

[0098] In this embodiment, the first detection portion 371a of the first liquid level detection component 370a is arranged lower than the lowest second surge protection plate 342 in the height direction of the sewage bucket 300, and the second detection portion 371b of the second liquid level detection component 370b is located between the first surge protection plate 341 and the second surge protection plate 342 below in the height direction of the sewage bucket 300. The detection portions of the two sets of liquid level detection components are arranged lower than the highest point of the first surge protection plate 341 in the thickness direction of the sewage bucket 300.

[0099] In this embodiment, the protruding heights of the two second surge protection plates 342 may be the same or slightly different.

[0100] The other structures of the fourth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0101] Embodiment 5

[0102] Combination Fig. 20In this embodiment, four surge protection plates are arranged at intervals along the height direction of the sewage bucket 300, of which three surge protection plates are located below the partition in the height direction of the sewage bucket, and the other surge protection plate is located at the bottom of the lower cover shell 382 and higher than the connecting port 353 in the height direction of the sewage bucket. Among them, one first surge protection plate 341 is arranged, and three second surge protection plates 342 are arranged. The first surge protection plate 341 is located between the two lower second surge protection plates 342. The four surge protection plates can be arranged in an equidistant spacing manner or in an unequal spacing manner.

[0103] The height of the first anti-surge plate 341 protruding from the rear side wall of the barrel body 310 is greater than the height of the second anti-surge plate 342 protruding from the rear side wall of the barrel body 310. The protruding height of the first anti-surge plate 341 is about 4 / 5 of the thickness of the first chamber 361, and the protruding height of the second anti-surge plate 342 is about 1 / 2 of the thickness of the first chamber 361. At least part of the projection of the connecting port 353 along the height direction of the sewage bucket falls within the first anti-surge plate 341. When the sewage bucket 300 is in a lying state, the highest point of the first anti-surge plate 341 is higher than part or all of the connecting port 353, ensuring the blocking effect of the first anti-surge plate 341 on the surging sewage between the two anti-surge plates, and preventing the surging sewage between the two anti-surge plates from surging toward the connecting port 353 and entering the second chamber 362.

[0104] In this embodiment, the first detection portion 371a of the first liquid level detection component 370a is arranged lower than the lowest second surge protection plate 342 in the height direction of the sewage bucket 300, and the second detection portion 371b of the second liquid level detection component 370b is located between the first surge protection plate 341 and the lowest second surge protection plate 342 in the height direction of the sewage bucket 300. The detection portions of the two sets of liquid level detection components are arranged lower than the highest point of the first surge protection plate 341 in the thickness direction of the sewage bucket 300.

[0105] In this embodiment, the protruding heights of the three second surge protection plates 342 may be the same or slightly different.

[0106] The other structures of the fifth embodiment are the same as those of the first embodiment and will not be described in detail here.

[0107] In addition to the above preferred embodiments, the present invention has other implementation modes. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not deviate from the spirit of the present invention, they should all fall within the scope defined in the claims of the present invention.

Claims

1. A surface cleaning device, comprising a body and a floor brush connected in a pivotal manner, the floor brush being provided with a sewage suction port, the body being provided with a sewage bucket, the sewage bucket comprising a barrel body and a barrel cover, the barrel body being provided with a sewage inlet pipe connected to the sewage suction port, the barrel cover being provided with an exhaust passage, characterized in that: A partition is provided in the sewage bucket, which divides the inner cavity of the sewage bucket into a first chamber and a second chamber that are connected. The upper end of the sewage inlet pipe extends into the first chamber, and the inlet of the exhaust channel is arranged on the cavity wall of the second chamber. A surge prevention plate is provided in the first chamber, and the surge prevention plate is lower than the connection between the first chamber and the second chamber. At least two surge prevention plates are arranged at intervals along the height direction of the sewage bucket.

2. A surface cleaning device according to claim 1, characterized in that: Each of the surge protection plates comprises a baffle plate which is arranged perpendicularly to the height direction of the sewage bucket.

3. A surface cleaning device according to claim 1, characterized in that: The surge-proof plate has a first surge-proof plate near the connection between the first chamber and the second chamber, the first surge-proof plate includes a baffle and a straight plate, the baffle is arranged perpendicularly to the height direction of the sewage bucket, the straight plate extends along the height direction of the sewage bucket, and the straight plate is arranged lower than the partition in the thickness direction of the sewage bucket.

4. A surface cleaning device according to claim 3, characterized in that: The straight plate extends from the upper edge of the baffle toward the upper port of the sewage inlet pipe; or, one end of the straight plate extends from the upper edge of the baffle toward the upper port of the sewage inlet pipe, and the other end of the straight plate extends from the upper edge of the baffle toward the barrel cover, and the projection of the connection between the first chamber and the second chamber in the thickness direction of the sewage barrel falls within the straight plate.

5. A surface cleaning device according to claim 3, characterized in that: The surge protection plate also has a second surge protection plate away from the connection between the first chamber and the second chamber. The second surge protection plate is arranged perpendicular to the height direction of the sewage bucket. The height of the second surge protection plate protruding relative to the side wall of the barrel body is less than that of the first surge protection plate.

6. A surface cleaning device according to claim 1, characterized in that: The projection of the connection point between the first chamber and the second chamber in the height direction of the sewage bucket falls within at least one surge protection plate.

7. A surface cleaning device according to claim 6, characterized in that: The surge-proof plate includes a first surge-proof plate and a second surge-proof plate, wherein the height of the first surge-proof plate protruding relative to the barrel side wall is greater than that of the second surge-proof plate, and the projection of the connection between the first chamber and the second chamber in the height direction of the sewage barrel falls within the first surge-proof plate.

8. A surface cleaning device according to claim 7, characterized in that: The second surge-proof plate is located below the first surge-proof plate in the height direction of the sewage bucket; or, two second surge-proof plates are arranged at intervals in the height direction of the sewage bucket, and the first surge-proof plate is located between the two second surge-proof plates.

9. A surface cleaning device according to claim 1, characterized in that: The barrel body is provided with a dirt shield which is used to cover the upper port of the dirt inlet pipe, the top of the dirt shield is connected to the partition, and the anti-surge plate is arranged on the outer side of the dirt shield in the left and right directions.

10. A surface cleaning device according to any one of claims 1 to 9, characterized in that: The barrel cover is provided with a liquid level detection member that passes through the anti-surge plate and extends into the first chamber. The liquid level detection member has at least a pair of detection parts that are arranged lower than the anti-surge plate in the height direction of the sewage barrel and are spaced apart on the left and right. The liquid level detection member is at least lower than the front edge of one of the anti-surge plates in the thickness direction of the sewage barrel.

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