Separation module for a cleaning machine and cleaning system

Abstract

The application relates to a separating module for a cleaning machine and a cleaning system. The separating module comprises a housing with a chamber in the interior, an air inlet and an air outlet. The separating module further comprises a bottom plate covering the bottom opening of the annular member, the bottom plate having an opening communicating with the chamber and a flow channel; a cover plate rotatably arranged at the opening and having a first state of closing the opening and a second state of opening the opening; a vertical dirt discharging pipe, at least partially located in the flow channel when the cover plate is in the first state, and the lower end of the pipe corresponding to the opening, the pipe being arranged to move downward to push the cover plate to rotate to the second state, and then the pipe can partially pass through the opening downward to communicate with the chamber; and a first elastic member acting on the pipe to always have a tendency of upward movement. The application does not need to open a dirt discharging opening on the side wall of the chamber and ensures the separating capacity.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of household washing and cleaning, and particularly relates to a separation module for a cleaning machine and a cleaning system. BACKGROUND

[0002] The current cleaning machine is a sweeper or a scrubber. The cleaning machine sucks the mixture of dust mixed with water vapor on the ground into its inner cavity, and separates the mixture of particulate matter, water vapor and sewage through the separation module.

[0003] As the applicant's prior application, the Chinese utility model patent "A separation module for a cleaning machine, a cleaning machine and a cleaning system", with the patent number ZL202121483642.3 (the authorized announcement number CN215502820U), discloses a separation module for a cleaning machine, which comprises a shell having an inner cavity, the cavity having an air inlet and an air outlet, along the fluid flow path, the air outlet is located downstream of the air inlet; a separation piece at least for separating dust and liquid, vertically arranged in the cavity, and having a cavity connected with the air inlet, along the airflow flow path, the air outlet is located downstream of the cavity.

[0004] The above separation module realizes the separation of sewage and dust, but when the fluid enters the chamber (storage cavity) for sewage suction, the existence of the opening (sewage outlet) at the position adjacent to the bottom of the side wall of the storage cavity, the water storage chamber bottom rotating flow, the water surface is more prone to fluctuation, increasing the risk of water. SUMMARY

[0005] The first technical problem to be solved by the present application is to provide a separation module for a cleaning machine without opening a sewage outlet on the side wall of the chamber and ensuring separation capacity in view of the current situation of the prior art.

[0006] The second technical problem to be solved by the present application is to provide a cleaning system with automatic sewage discharge.

[0007] The technical solution adopted by the present application to solve the above first technical problem is: a separation module for a cleaning machine, comprising:

[0008] a shell having a cavity in its interior, the cavity having an air inlet connected with the cavity, the top of the cavity having an air outlet;

[0009] a separation piece at least for separating dust and liquid, which is located in the cavity and comprises a ring-shaped piece in the form of a vertical ring wall, the ring wall of the ring-shaped piece surrounding the periphery of the air outlet and forming a flow channel connected with the air outlet;

[0010] Characterized in that the ring wall of the ring member has a vent hole communicating with the flow channel, the separation member further comprises a bottom plate covering the bottom opening of the ring member, the bottom plate has an opening communicating the chamber and the flow channel; the separation module further comprises:

[0011] a cover plate rotatably arranged at the opening and having a first state of closing the opening and a second state of opening the opening;

[0012] a vertical sewage pipe, at least partially located in the flow channel when the cover plate is in the first state, and the lower end of the sewage pipe corresponds to the opening, the sewage pipe is arranged to move downward to push the cover plate to rotate to the second state, and then the part of the sewage pipe can pass downward through the opening to communicate with the chamber; and

[0013] a first elastic member acting on the sewage pipe to always have a tendency to move upward.

[0014] During normal sewage suction, the sewage pipe is located in the flow channel, the cover plate blocks the opening of the bottom plate, and the fluid mixed with sewage enters through the air inlet and flows along the inner side wall of the chamber, collides with the inner side wall, and the separated water moves downward along the inner side wall and deposits in the chamber; then the separated fluid enters the flow channel through the vent hole, and further separation occurs after collision with the peripheral wall of the sewage pipe, and the presence of the sewage pipe increases the probability of fluid deflection and collision, thereby improving the separation capacity; during sewage discharge, the sewage pipe is driven to move downward, at this time, the sewage pipe pushes the cover plate to rotate, and the lower end of the sewage pipe passes downward through the flow channel to communicate with the chamber, and the sewage at the bottom of the chamber can be discharged through the sewage pipe, i.e. without additionally opening a sewage outlet on the side wall of the chamber, sewage discharge can be realized.

[0015] In order to realize the automatic closing of the opening of the cover plate, a second elastic member is further included, which always has a tendency to rotate upward and close the opening, and the second elastic member acts on the cover plate.

[0016] In order to facilitate the insertion of the recovery pipe on the subsequent base station and the movement of the sewage pipe, when the cover plate is in the first state and the sewage pipe is located in the flow channel, a through hole is formed in the top of the shell corresponding to the position of the sewage pipe, which communicates with the sewage pipe.

[0017] The elastic member is a spring or a leaf spring, but preferably, the top opening of the sewage pipe extends outward to form a retaining edge, the elastic member is a spring sleeved on the outer periphery of the sewage pipe, the upper end of the spring abuts against the retaining edge, and the lower end of the spring abuts against the top wall of the bottom plate.

[0018] In order to prevent the separation piece and the inner bottom wall of the chamber from being blocked by garbage, a gap is left between the bottom of the separation piece and the inner bottom wall of the chamber.

[0019] Preferably, the air inlet is located on the side wall of the chamber, and the peripheral edge of the bottom plate is gradually inclined downward from top to bottom to form an extension plate, which is located below the air inlet. The air inlet is located above the extension plate. Since the extension plate is gradually inclined outward from top to bottom (i.e. inclined from inside to outside and from top to bottom), the gap between the upper part of the extension plate and the inner side wall of the chamber is larger than the gap between the lower part of the extension plate and the inner side wall of the chamber. When the fluid mixed with sewage enters through the air inlet, the upper air speed is large and the lower air speed is small, thereby forming a pressure difference between the upper and lower parts in the chamber. Due to the force of gravity, the water will rotate downward and fall down. At the same time, the peripheral speed of the outer periphery of the bottom edge of the extension plate is slower than the peripheral speed of the outer periphery of the top edge of the extension plate. In this way, the sewage and garbage will remain at the bottom of the chamber, avoiding the sewage and garbage flowing upward to contact the filter element, thereby affecting the service life of the filter element and the subsequent fan.

[0020] The form of the air inlet can be various, and the air inlet can be directly formed on the ring wall or formed through a grid. Preferably, the ring wall of the ring-shaped piece comprises a plurality of blades extending vertically and arranged along the circumferential direction, and an air inlet gap for air entering tangentially is formed between adjacent two blades, which is the air inlet.

[0021] In order to improve the separation capacity, the air inlet direction of each air inlet gap extends at an acute angle with the circumferential direction of the ring-shaped piece, so that the overall circumferential direction is clockwise or counterclockwise. In this way, the rotational flow inside and outside the flow channel in the chamber can be ensured. The fluid entering through the air inlet moves along the inner side wall of the chamber and collides with the inner side wall. The separated water moves downward along the inner side wall and deposits in the chamber. The fluid after preliminary separation enters the flow channel through the air inlet gap and collides with the inner wall of the air inlet gap to be further separated. The rotational direction of each air inlet gap is arranged, and the airflow entering the flow channel rotates in the flow channel. The separated sewage deposits on the bottom plate, thereby improving the separation capacity.

[0022] Preferably, the blades include a first blade and a second blade, the lower end of the first blade is connected to the bottom plate, the ring wall of the ring member further includes an arc plate arranged adjacent to the air inlet, along the air flow path, the arc plate is located upstream of the air inlet gap, the arc plate extends along the circumference of the ring member and is located in the region of the ring wall of the ring member other than the first blade, and the bottom edge of the arc plate is connected to the bottom plate, the second blade is at least two, and the lower end of the second blade is connected to the top edge of the arc plate. The presence of the arc plate avoids the fluid entering the air inlet directly into the air inlet gap, increases the risk of water, at this time the fluid rotates along the arc plate and the inner side wall of the chamber, and then enters the air inlet gap, reduces the probability of water on the bottom of the chamber flowing upward to contact the subsequent fan.

[0023] In order to avoid the deposited water being sucked into the subsequent filter element, prolong the service life of the filter element, the top wall of the bottom plate is provided with an upwardly extending and annular baffle, the baffle is located in the flow channel and has a first gap with the ring wall. At this time, the fluid entering through the air inlet gap rotates in the first gap, and the separated sewage is deposited in the first gap.

[0024] In order to better reduce the probability of water being sucked into the filter element, the height of the baffle is h, the height of the ring wall of the ring member is H, and the height H and h satisfy: H = 2h.

[0025] In order to improve the separation capacity, the periphery of the air outlet has a downwardly extending vertical plate, the bottom periphery of the vertical plate extends inwardly to form a bent plate, the bent plate is located below the top edge of the baffle and has a second gap with the baffle, and the inner edge of the bent plate forms a through-air outlet communicating the flow channel and the air outlet, along the air flow path, the through-air outlet is located downstream of the second gap, and the second gap is located downstream of the first gap. In this way, after the fluid entering through the air inlet gap rotates in the first gap, it enters the second gap after passing over the baffle, then flows downward and passes through the air outlet and then moves upward, increasing the number of times of fluid deflection and collision, and achieving a better separation effect.

[0026] In order to further improve the separation capacity, a containing space for the filter element is formed between the bent plate and the vertical plate, along the air flow path, the through-air outlet is located upstream of the filter element.

[0027] In order to support the filter, the filter is installed in the accommodating space through a mounting frame, the mounting frame comprises an inner ring wall and an outer ring wall arranged in sequence from inside to outside, the bottoms of the inner ring wall and the outer ring wall are connected through a connecting plate, the filter is located in the mounting space formed by the inner ring wall, the outer ring wall and the connecting plate, and the inner ring wall and the outer ring wall are respectively provided with a first air passage and a second air passage for airflow, along the airflow flow path, the filter is located between the first air passage and the second air passage, and the first air passage is located between the air passage and the filter.

[0028] Preferably, the opening is located adjacent to the center of the bottom plate.

[0029] In order to improve the sewage discharge capacity in the chamber, the inner bottom wall of the chamber has a collection area for water collection, and when the sewage pipe moves downward to a state of being partially located below the opening, the lower end of the sewage pipe corresponds to the collection area.

[0030] The collection area can have various forms, and can adopt a mode that the inner bottom wall of the chamber gradually inclines inward from top to bottom, or can adopt a form that a recessed area is formed by downward recessing, but preferably, the inner bottom wall of the chamber is recessed downward to form the collection area.

[0031] The technical scheme adopted by the present application to solve the second technical problem is: a cleaning system with the above-mentioned characteristics, characterized in that: comprising a cleaning machine and a base station, the separation module is located in the cleaning machine, the base station has an accommodating chamber for the cleaning machine to enter, and the base station has a recycling pipe that can move up and down, in the state that the cleaning machine is located in the accommodating chamber, the recycling pipe is arranged corresponding to the sewage pipe and can communicate with the sewage pipe, and the recycling pipe can push the sewage pipe downward to move the sewage pipe downward to a state of being in communication with the chamber.

[0032] The cleaning machine can be a sweeper or a scrubber, but preferably, the cleaning machine is a sweeper.

[0033] Compared with the prior art, the advantages of the present application are that: in normal sewage suction, the sewage pipe is located in the flow channel, the cover plate seals the opening of the bottom plate, the fluid mixed with sewage enters through the air inlet and flows along the inner side wall of the chamber, collides with the inner side wall, and the separated water moves downward along the inner side wall and deposits in the chamber; then the separated fluid enters the flow channel through the vent, and further separation occurs after colliding with the peripheral wall of the sewage pipe, and the presence of the sewage pipe increases the probability of fluid baffle collision and improves the separation capacity; during sewage discharge, the sewage pipe is driven to move downward, at this time, the sewage pipe pushes the cover plate to rotate, and the lower end of the sewage pipe penetrates out of the flow channel and communicates with the chamber, so that the sewage at the bottom of the chamber can be discharged through the sewage pipe, that is, without additionally opening a sewage outlet on the side wall of the chamber, sewage discharge can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 Part structure diagram of the separation module of the embodiment;

[0035] Figure 2 Cross-sectional view of Figure 1 ;

[0036] Figure 3 Cross-sectional view of Figure 1 with a recovery pipe installed;

[0037] Figure 4 Cross-sectional view of Figure 1 from another angle;

[0038] Figure 5 Structure diagram of the separation piece;

[0039] Figure 6 Structure diagram of the cleaning system. DETAILED DESCRIPTION

[0040] The present application will be further described in detail below in combination with the embodiment of the drawings.

[0041] The cleaning system of the embodiment includes a cleaning machine and a base station 9, wherein the cleaning machine is a sweeper 01, and the sweeper 01 includes a separation module and a fan (not shown),

[0042] As shown in Figures 1 to 6 , the above separation module includes a housing 1, a separation piece 2, a filter piece 3, a mounting bracket 4, a cover plate 6, a sewage pipe 7, a first elastic piece and a second elastic piece. The housing 1 has a chamber 10 and an air outlet passage above the chamber 10, and the air outlet passage is connected with the fan through an air outlet passage 17, so that the fan is located downstream of the air outlet 101 along the air flow path. The cross section of the chamber 10 of the housing 1 is circular. In addition, it can also be oval. As Figure 2 and Figure 3As shown, chamber 10 has an air inlet 100 and an air outlet 101 at its top. The side wall of the aforementioned housing 1 has an air inlet channel 16 for tangential airflow into chamber 10. This air inlet channel 16 is connected to chamber 10, and its outlet is the air inlet 100 of chamber 10, located on the side wall of chamber 10. Along the fluid flow path, the air inlet 100 is upstream of the air outlet 101. When fluid enters chamber 10 through the air inlet 100, it flows along the inner side wall of chamber 10 in the direction of rotation of the air inlet gaps, i.e., clockwise.

[0043] The separator 2 is used to separate at least dust and liquid, and is located within the chamber 10. The separator 2 includes an annular member 21 with a vertical ring wall and a base plate 22 covering the bottom opening of the annular member 21. The annular wall of the annular member 21 surrounds the periphery of the air outlet 101 and forms a flow channel 20 communicating with the air outlet 101. In this embodiment, the annular member 21 has a circular cross-section and is arranged concentrically with the housing 1. Furthermore, the orthographic projection of the separator 2 along the vertical direction onto the horizontal plane is located in the central region of the bottom wall inside the housing 1. The base plate 22 has an opening 221 near its center, connecting the chamber 10 and the flow channel 20. The top surface of the base plate 22 is an inclined surface 222 that gradually slopes downwards towards the opening 221; this inclined surface 222 is a conical surface.

[0044] like Figure 2 and Figure 3As shown, the cover plate 6 is rotatably arranged at the opening 221 and has a first state of closing the opening 221 and a second state of opening the opening 221. In the embodiment, the cover plate 6 is rotatably arranged at the opening 221 of the bottom plate 22 by a rotating shaft. The drain pipe 7 is vertically arranged and located in the flow channel 20 when the cover plate 6 is in the first state. The lower end of the drain pipe 7 corresponds to the opening 221, and the drain pipe 7 is arranged to be movable downward to push the cover plate 6 to rotate to the second state, and then a part of the drain pipe 7 can pass through the opening 221 downward to communicate with the chamber 10. When the cover plate 6 is in the first state, the drain pipe 7 is located in the flow channel 20, and the top of the shell 1 is provided with a through hole 14 corresponding to the drain pipe 7, which communicates with the drain pipe 7. The through hole 14 is provided with a movable plate (not shown) which can rotate relative to the shell to open or close the through hole 14. The movable plate can be realized by an electric motor, which will not be described in detail in the embodiment. The base station 9 has a receiving room 90 for the cleaning machine to enter, and the base station 9 has a recycling pipe 91 which can move up and down. When the cleaning machine is located in the receiving room 90, the recycling pipe 91 is located above the drain pipe 7 and corresponds to the drain pipe 7, and the recycling pipe 91 can move downward to communicate with the drain pipe 7 and continue to push the drain pipe 7 downward to move the drain pipe 7 downward to the state of communicating with the chamber 10. The recycling pipe 91 can be realized by the structure in the prior art, such as the second rigid pipe segment in the connecting pipe in the patent No. ZL202220794266.8, which will not be described in detail in the embodiment.

[0045] In order to restore the drain pipe 7 to the initial position when the recycling pipe 91 moves upward, the first elastic member acts on the drain pipe 7 to make the drain pipe 7 always have a tendency to move upward. Specifically, the top of the drain pipe 7 is open and the periphery of the top of the drain pipe 7 extends outward to form a stopper 71, and the spring 8 is sleeved on the periphery of the drain pipe 7. The upper end of the spring 8 abuts against the stopper 71, and the lower end of the spring 8 abuts against the top wall of the bottom plate 22.

[0046] In order to automatically close the opening 221 by the cover plate 6 when the drain pipe moves upward to the state of being located in the flow channel, specifically, the second elastic member makes the cover plate 6 always have a tendency to rotate upward to close the opening 221, and the second elastic member acts on the cover plate 6. In the embodiment, the second elastic member is a torsional spring (not shown) sleeved on the rotating shaft. The inner bottom wall of the chamber 10 is recessed downward to form a collection area 103 for water collection. When the drain pipe 7 moves downward to the state of being partially located below the opening 221, the lower end of the drain pipe 7 corresponds to the collection area 103. The drain pipe 7 is located in the central region of the flow channel. In addition, in order to facilitate the collection of water into the collection area 103, the inner bottom wall of the chamber 10 can be a flow guide surface which gradually inclines from top to bottom into the collection area 103.

[0047] AsFigure 2 , Figure 3 and Figure 5 As shown, the periphery of the base plate 22 gradually slopes outward from top to bottom to form an extension plate 223. The extension plate 223 is annular and located below the air inlet 100. A gap is left between the extension plate 223 and the inner bottom wall of the chamber 10, and a gap is also left between the separator and the inner bottom wall of the chamber 10. The top wall of the base plate 22 is provided with an upwardly extending, annular baffle 221. The height of the baffle 221 is h, and the height of the annular wall of the annular member 21 is H. Heights H and h satisfy: H = 2h. The baffle 221 is located in the flow channel 20, and a first gap 25 is left between it and the annular wall of the annular member 21. Additionally, the air outlet 101 has a downwardly extending vertical plate 11 around its periphery. A bent plate 12 extends inwardly from the bottom periphery of the vertical plate 11. The bent plate 12 is located below the top edge of the baffle 221 and has a second gap 26 between it and the baffle 221. Along the fluid flow path, the second gap 26 is located downstream of the first gap 25. The inner periphery of the aforementioned bent plate 12 forms an air passage 121 connecting the flow channel 20 and the air outlet 101. Along the fluid flow path, the air passage 121 is located downstream of the second gap 26.

[0048] In addition, such as Figure 2 and Figure 3 As shown, the vertical plate 11 and the bent plate 12 enclose a receiving space 13 for housing the filter element 3. Along the airflow path, the filter element 3 is located downstream of the air outlet 121. To support the filter element, a mounting frame 4 for supporting the filter element 3 is provided in the receiving space 13. The mounting frame 4 includes an inner ring wall 41 and an outer ring wall 42 arranged sequentially from the inside to the outside. The bottom edges of the inner ring wall 41 and the outer ring wall 42 are connected by a connecting plate 43. The filter element is located in the mounting space 44 formed by the inner ring wall 41, the outer ring wall 42 and the connecting plate 43. The inner ring wall 41 and the outer ring wall 42 are respectively provided with a first air outlet 411 and a second air outlet 412 for airflow to pass through. Along the airflow path, the filter element is located between the first air outlet 411 and the second air outlet 412. The first air outlet 411 is located between the air outlet 121 and the filter element.

[0049] The aforementioned annular component 21 has a ventilation opening connected to the flow channel 20. Specifically, the annular component 21 includes an annular body 24 located above the base plate 22 and in an annular shape. The annular wall of the annular component 21 includes an arc-shaped plate 213 arranged adjacent to the air inlet 100 and a plurality of blades that extend vertically and are spaced apart along the circumference of the annular component 21. An air inlet gap 210 is formed between two adjacent blades to allow air to enter tangentially. The air inlet gap 210 is the aforementioned ventilation opening. The air inlet direction of each of the aforementioned air inlet gaps 210 extends at an acute angle to the circumference of the annular component 21, so that the whole component rotates clockwise or counterclockwise in the circumferential direction.

[0050] In the present embodiment, as shown in Figure 5 The above-mentioned vanes include a first vane 211 and a second vane 212, the lower end of the first vane 211 being connected to the bottom plate 22, and the upper ends of the above-mentioned first vane 211 and second vane 212 being connected to the annular body 24. Along the airflow flow path, an arc-shaped plate 213 is located upstream of the air inlet gap 210. The arc-shaped plate 213 extends along the circumference of the annular member 21 and is located in the region of the annular member ring wall other than the first vane 211, and the bottom edge of the arc-shaped plate 213 is connected to the bottom plate 22. In addition, there are at least two second vanes 212, and the lower end of each second vane 212 is connected to the top edge of the arc-shaped plate 213.

[0051] In normal sewage absorption, the sewage pipe is located in the flow channel, the cover plate seals the opening of the bottom plate, and the fluid mixed with sewage enters through the air inlet and flows along the inner side wall of the chamber, collides with the inner side wall, and the separated water moves downward along the inner side wall and deposits in the chamber; then the separated fluid enters the flow channel through the vent, and further separation occurs after colliding with the peripheral wall of the sewage pipe. The presence of the sewage pipe increases the probability of fluid collision and separation.

[0052] In the specification and claims of the present application, directional terms such as "front", "back", "up", "down", "left", "right", "side", "top", "bottom", etc. are used to describe various example structural parts and elements of the present application, but these terms are used herein only for the purpose of convenience of description and are determined based on the example orientation shown in the drawings. Since the disclosed embodiments of the present application can be arranged in different directions, these directional terms are only for illustration and should not be considered as limiting, such as "up" and "down" which are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0053] The "fluid communication" referred to in the present application refers to the spatial positional relationship between two components or parts (hereinafter collectively referred to as first part and second part), i.e. the fluid (gas, liquid or mixture of both) can flow or / and be transported from the first part to the second part along the flow path, which can be directly connected between the first part and the second part, or indirectly connected between the first part and the second part through at least one third party, which can be a fluid passage such as a pipe, channel, conduit, flow guide, hole, groove, etc., or a chamber allowing fluid flow or a combination thereof.

Claims

1. A separating module for a cleaning machine, comprising: a housing (1) having a chamber (10) in its interior, the chamber (10) having an air inlet (100) communicating with the chamber (10), the top of the chamber (10) having an air outlet (101); a separating member (2) for separating at least dust and liquid, the separating member (2) being located in the chamber (10) and comprising a ring member (21) in the form of a vertical ring wall, the ring wall of the ring member (21) surrounding the periphery of the air outlet (101) and forming a flow channel (20) communicating with the air outlet (101); the ring wall of the ring member (21) having air vents communicating with the flow channel (20), the separating member (2) further comprising a bottom plate (22) covering the bottom opening of the ring member (21), the bottom plate (22) having an opening (221) communicating with the chamber (10) and the flow channel (20); the separating module further comprising: a cover plate (6) rotatably arranged at the opening (221) and having a first state in which the cover plate (6) closes the opening (221) and a second state in which the cover plate (6) opens the opening (221); a drain pipe (7) vertically arranged and at least partially located in the flow channel (20) when the cover plate (6) is in the first state, the lower end of the drain pipe (7) corresponding to the opening (221), the drain pipe (7) being arranged to move downward to rotate the cover plate (6) to the second state, and then the drain pipe (7) can partially pass through the opening (221) to communicate with the chamber (10); and a first elastic member acting on the drain pipe (7) to always have a tendency to move upward; the ring wall of the ring member (21) comprises a plurality of blades vertically extending and spaced along the circumferential direction, an air inlet gap (210) for tangential air inlet being formed between adjacent two blades, the air inlet gap (210) being the air vent; the blades comprise first blades (211) and second blades (212), the lower end of the first blade (211) being connected to the bottom plate (22), the ring wall of the ring member (21) further comprising an arc plate (213) arranged adjacent to the air inlet (100), the arc plate (213) being located upstream of the air inlet gap (210) along the air flow path, the arc plate (213) extending along the circumferential direction of the ring member (21) and being located in the region of the ring wall of the ring member (21) other than the first blades (211), the bottom edge of the arc plate (213) being connected to the bottom plate (22), and there are at least two second blades (212), the lower end of the second blade (212) being connected to the top edge of the arc plate (213). The separating module further comprises a second elastic member acting on the cover plate (6) to always have a tendency to rotate upward and close the opening (221). ​ characterized in that ​ ​ ​ ​ ​ ​ 2. The separation module of claim 1, wherein: ​ 3. The separation module of claim 1, wherein: The drain pipe (7) is located in the flow channel (20) when the cover plate (6) is in the first state, and the top of the shell (1) is provided with a through hole (14) corresponding to the position of the drain pipe (7) and communicating with the drain pipe (7).

4. The separation module of claim 3, wherein: The top of the drain pipe (7) is open and the periphery of the open top extends outward to form a retaining edge (71), and the elastic member is a spring (8) sleeved on the periphery of the drain pipe (7), the upper end of the spring (8) abuts against the retaining edge (71), and the lower end of the spring (8) abuts against the top wall of the bottom plate (22).

5. The separation module of claim 1, wherein: The bottom of the separation member (2) is spaced from the inner bottom wall of the chamber (10).

6. The separation module of claim 5, wherein: The air inlet (100) is located on the side wall of the chamber (10), and the periphery of the bottom plate (22) gradually inclines outward from top to bottom to form an extension plate (223), and the extension plate (223) is located below the air inlet (100).

7. The separation module of claim 1, wherein: The air inlet direction of each air inlet gap (210) extends at an acute angle with the circumferential direction of the annular member (21), so that the overall circumferential direction is clockwise or counterclockwise.

8. The separation module of claim 1, wherein: The opening (221) is located adjacent to the center of the bottom plate (22).

9. The separation module of any one of claims 1 to 7, wherein: The top wall of the bottom plate (22) is provided with an upwardly extending annular baffle (220), which is located in the flow channel (20) and spaced from the annular wall by a first gap (25).

10. The separation module of claim 9, wherein: The height of the baffle (220) is h, and the height of the annular wall of the annular member (21) is H, and the height H and h satisfy: H=2h.

11. The separation module of claim 9, wherein: The periphery of the air outlet (101) has a downwardly extending vertical plate (11), the bottom periphery of the vertical plate (11) extends inwardly to form a bent plate (12), the bent plate (12) is located below the top periphery of the baffle (220) and spaced from the baffle (220) by a second gap (26), and the inner periphery of the bent plate (12) forms a through air hole (121) communicating the flow channel (20) and the air outlet (101), along the fluid flow path, the through air hole (121) is located downstream of the second gap (26), and the second gap (26) is located downstream of the first gap (25).

12. The separation module of claim 11, wherein: The bent plate (12) and the vertical plate (11) form a receiving space (13) for receiving a filter member, and along the air flow path, the through air hole (121) is located upstream of the filter member.

13. The separation module of claim 12, wherein: The filter is installed in the accommodating space (13) through a mounting frame (4), the mounting frame (4) comprises an inner ring wall (41) and an outer ring wall (42) arranged in sequence from inside to outside, the bottoms of the inner ring wall (41) and the outer ring wall (42) are connected through a connecting plate (43), the filter is located in a mounting space (44) enclosed by the inner ring wall (41), the outer ring wall (42) and the connecting plate (43), and the inner ring wall (41) and the outer ring wall (42) are respectively provided with a first air passage (411) and a second air passage (412) for airflow, along the airflow flow path, the filter is located between the first air passage (411) and the second air passage (412), and the first air passage (411) is located between the air passage (121) and the filter.

14. The separation module of any one of claims 1 to 8 and 10 to 13, wherein: The inner bottom wall of the chamber (10) has a collection area (103) for water collection, and in the state that the drain pipe (7) moves downward to be partially located below the opening (221), the lower end of the drain pipe (7) corresponds to the collection area (103).

15. The separation module of claim 14, wherein: The inner bottom wall of the chamber (10) is concave downward to form the collection area (103).

16. A cleaning system having a separation module as claimed in any one of claims 3 to 15, characterised in that: The cleaning machine and a base station (9) are included, the separation module is located in the cleaning machine, the base station (9) has an accommodating chamber (90) for the cleaning machine to enter, and the base station (9) has a recycling pipe (91) that can move up and down, in the state that the cleaning machine is located in the accommodating chamber (90), the recycling pipe (91) is arranged corresponding to the drain pipe (7) and can communicate with the drain pipe (7), and the recycling pipe (91) can push the drain pipe (7) downward to move the drain pipe (7) downward to be in communication with the chamber (10).

17. The cleaning system of claim 16, wherein: The cleaning machine is a sweeper (01).

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