Negative pressure suction module, water tank and cleaning base station

Abstract

The invention discloses a negative pressure suction module, a water tank and a cleaning base station. The negative pressure suction module comprises a mounting part, an air exhaust column, a dirt suction column and a floating part. The mounting part is used for mounting the negative pressure suction module to the bottom of the water tank; the air exhaust column is arranged on the mounting part and is used for communicating the interior of the water tank with the air source part; the dirt suction column is arranged on the mounting part and is used for communicating the interior of the water tank with a space in which liquid to be sucked is located; the floating piece can change along with the water level in the water tank and can block the air exhaust column. The negative pressure suction module is applied to the water tank and the cleaning base station, and the negative pressure suction module which can be integrally detached is arranged, so that the cleaning difficulty of the water tank is effectively reduced; the water level in the water tank is monitored through the floating piece, and water fullness alarm is sensitive and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning equipment, in particular to a negative pressure suction module, a water tank and a cleaning base station. Background Art

[0002] Cleaning equipment such as floor cleaning equipment is a mechanical equipment designed for cleaning the floor. Common floor cleaning equipment such as floor scrubbers usually include a sewage tank in their structure. The sewage tank is mainly used to recycle sewage generated during the cleaning process of the cleaning equipment.

[0003] In the prior art, a water full detection structure and a sewage suction structure are usually provided in the sewage tank, which makes the internal structure of the sewage tank relatively complicated, and the various structures in the sewage tank are mostly fixed in the sewage tank. When cleaning the sewage tank, the various structures are often not cleaned properly. Long-term use will cause odor in the sewage tank, and the user experience is poor.

[0004] In view of this, the purpose of the present invention is to provide a new technical solution to solve the existing technical problems. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a negative pressure suction module, a water tank and a cleaning base station, which solve the problem of difficulty in cleaning the water tank in the prior art.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A negative pressure suction module comprises a mounting part, an air suction column, a sewage suction column and a floating part; the mounting part is used to mount the negative pressure suction module to the bottom of a water tank; the air suction column is arranged on the mounting part, and is used to connect the interior of the water tank and the air source part; the sewage suction column is arranged on the mounting part, and is used to connect the interior of the water tank and the space where the liquid to be sucked is located; the floating part can change with the water level inside the water tank and can block the air suction column.

[0008] In the above structure, the negative pressure suction module also includes a positioning column, which is arranged on the mounting member, the vacuum column is connected to the positioning column, a ventilation gap is opened on the side wall of the positioning column, and the floating member is arranged in the positioning column.

[0009] In the above structure, a connecting pipe is provided at the top of the vacuum column, the connecting pipe is connected to a connecting head, the connecting head is covered on the top of the positioning column, and a vent hole connected to the connecting pipe is provided on the connecting head;

[0010] Wherein, the floating member changes with the water level inside the water tank and can block the air hole.

[0011] In the above structure, a limiting column is also provided on the mounting part, the top of the sewage suction column is connected to a sewage pipe, the sewage pipe is connected to a one-way valve, the one-way valve is connected to the limiting column, and the limiting column is provided with a drainage gap from top to bottom.

[0012] Based on the negative pressure suction module of the above structure, the present invention also provides:

[0013] A water tank, characterized in that it includes a negative pressure suction module of the structure as described above, and also includes a water tank body, wherein a mounting hole is provided at the bottom of the water tank body, and the mounting hole cooperates with the mounting piece so that the negative pressure suction module can be detachably fixed to the water tank body.

[0014] In the above structure, the water tank body is provided with a connecting portion, and the connecting portion is protruded from the mounting hole. The mounting part includes a base plate and a threaded sleeve, and the threaded sleeve is sleeved on the base plate. The vacuum column, the sewage suction column and the positioning column are all arranged on the base plate. The base plate is provided with sewage suction holes and vacuum holes, and the vacuum column is connected with the vacuum hole, and the sewage suction column is connected with the sewage suction hole, and the threaded sleeve is threadedly connected to the connecting portion.

[0015] In the above structure, the bottom plate has a flange, the flange is clamped in the mounting hole, a positioning ridge is provided inside the connecting portion, a positioning groove is provided on the flange, and the positioning groove cooperates with the positioning ridge.

[0016] Based on the water tank of the above structure, the present invention also provides:

[0017] A cleaning base station comprises a water tank of the above structure, and also comprises a base station body and a base station base, wherein the water tank body is arranged on the base station body, an air pump is arranged on the base station body, the air pump is connected to the air suction column, a cleaning tank is arranged on the base station body, the dirt suction column is connected to the cleaning tank, an air pressure detection module is arranged on the base station body, and the air pressure detection module is connected to the base station body electrical signal for detecting the suction air pressure.

[0018] In the above structure, a mounting base for mounting a water tank is provided on the base station body, a mounting groove is provided on the mounting base, an air extraction joint and a sewage extraction joint are provided at the bottom of the mounting groove, the mounting part is installed in the mounting groove, and the air extraction joint extends into the air extraction hole and is connected, the sewage extraction joint extends into the sewage extraction hole, the air extraction joint is connected to the air extraction pump, and the sewage extraction joint is connected to the cleaning tank.

[0019] In the above structure, the mounting seat is provided with an air outlet joint, the air outlet joint is located in the mounting groove, the air outlet joint is connected to the air outlet end of the air pump, and the mounting member is provided with a clearance groove, the air outlet joint can extend into the clearance groove;

[0020] A drainage hole is provided on the bottom wall of the installation groove, and the drainage hole is connected to the cleaning groove.

[0021] The beneficial effects of the present invention are as follows: the negative pressure suction module provided by the present invention is provided with a floating part which follows the changes in the water level. When the water level rises to a predetermined value, the floating part will block the vacuum column so that the air source part cannot vacuum the water in the water tank. Then, it can be judged whether the water tank is full of water according to the vacuum pressure. An independent negative pressure suction module is arranged in the water tank, and the negative pressure suction module can be disassembled from the water tank as a whole for cleaning, which helps to reduce the difficulty of cleaning the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the external structure of the water tank of the present invention;

[0024] Figure 2 This is a schematic diagram of the split structure of the water tank and the negative pressure suction module of the present invention;

[0025] Figure 3 It is a schematic cross-sectional view of one side of the negative pressure suction module of the present invention;

[0026] Figure 4 is a schematic cross-sectional view of the other side of the negative pressure suction module of the present invention;

[0027] Figure 5 It is a schematic cross-sectional view of one side of the water tank of the present invention;

[0028] Figure 6 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 7 It is a schematic diagram of the partial structural decomposition of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the mounting seat of the present invention;

[0031] Fig. 9 It is a schematic diagram of the internal structure of the base station body of the present invention.

[0032] Reference numerals:

[0033] 1. Base station body; 11. Mounting seat; 111. Mounting slot; 112. Sewage extraction joint; 113. Air extraction joint; 114. Air outlet joint; 115. Drain hole;

[0034] 2. Negative pressure suction module; 2016. Mounting piece; 21. Bottom plate; 211. Flange; 212. Positioning groove; 213. Air extraction hole; 214. Sewage extraction hole; 215. Make way groove; 22. Air extraction column; 221. Connecting pipe; 222. Connecting head; 2221. Air vent; 23. Sewage suction column; 231. Sewage discharge pipe; 2311. One-way valve; 24. Positioning column; 241. Air vent gap; 25. Limiting column; 251. Drainage gap; 26. Threaded sleeve; 27. Sealing ring;

[0035] 3. Air pressure detection module; 31. Floating part; 32. Soft rubber; 33. Air pressure sensor;

[0036] 4. Base; 41. Cleaning tank;

[0037] 5. water tank body; 51. mounting hole; 52. connecting part; 521. positioning ridge;

[0038] 6. Vacuum pump. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-9 The present invention is further described.

[0040] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0041] Reference Figures 1 to 5 The present invention discloses a negative pressure suction module 2, comprising a mounting member 2016, a suction column 22, a sewage suction column 23 and a floating member 31; the mounting member 2016 is used to mount the negative pressure suction module 2 to the bottom of a water tank; the suction column 22 is arranged on the mounting member 2016, and is used to connect the inside of the water tank and the air source member; the sewage suction column 23 is arranged on the mounting member 2016, and is used to connect the inside of the water tank and the liquid space to be sucked; the floating member 31 can change with the water level inside the water tank and can block the suction column 22.

[0042] Furthermore, the negative pressure suction module 2 also includes a positioning column 24, which is arranged on the mounting member 2016, the suction column 22 is connected to the positioning column 24, a ventilation notch 241 is opened on the side wall of the positioning column 24, and the floating member 31 is arranged in the positioning column 24.

[0043] Furthermore, a connecting pipe 221 is provided at the top of the air extraction column 22, and the connecting pipe 221 is connected to a connecting head 222, and the connecting head 222 is covered on the top of the positioning column 24, and a vent hole 2221 communicating with the connecting pipe 221 is opened on the connecting head 222;

[0044] The floating member 31 floats with the change of the water level inside the water tank and can block the air hole 2221 .

[0045] Furthermore, a limiting column 25 is provided on the mounting member 2016, a sewage pipe 231 is connected to the top of the sewage suction column 23, a one-way valve 2311 is connected to the sewage pipe 231, the one-way valve 2311 is communicated with the limiting column 25, and the limiting column 25 is provided with a drainage gap 251 from top to bottom.

[0046] Based on the negative pressure exhaust module of the above structure, the present invention also provides:

[0047] A water tank includes a negative pressure suction module 2 of the structure as described above, and also includes a water tank body 5. A mounting hole 51 is opened at the bottom of the water tank body 5. The mounting hole 51 cooperates with the mounting piece 2016 to allow the negative pressure suction module 2 to be detachably fixed to the water tank body 5.

[0048] Reference Figures 1 to 5 The negative pressure suction module 2 can be detachably arranged and fixed on the water tank body 5. Specifically, the mounting member 2016 cooperates with the mounting hole 51, so that the vacuum column 22, the sewage suction column 23, the limit column 25 and the positioning column 24 are located in the water tank body 5, and one end of the vacuum column 22 is connected to the air source component, and the other end is connected to the internal space of the water tank; one end of the sewage suction column 23 is connected to the space where the liquid to be sucked is located, and the other end is connected to the inside of the water tank body 5. The air source component exhausts air in the water tank body 5 through the vacuum column 22, so that a negative pressure is formed in the water tank body 5, and the liquid to be sucked is sucked from the sewage suction column 23 into the water tank body 5.

[0049] Furthermore, the air extraction column 22 is connected to the positioning column 24, and a venting notch 241 is provided on the side wall of the positioning column 24. Specifically, the venting notch 241 is provided from top to bottom, and the positioning column 24 is connected to the inside of the water tank body 5 through the venting notch 241. When the air source component is working, the gas in the water tank body 5 enters the positioning column 24 through the venting notch 241, and then is discharged from the air extraction column 22, so that a negative pressure is formed in the water tank body 5. When the water tank body 5 is in a negative pressure state, the liquid to be sucked is sucked into the water tank body 5, and the water in the water tank body 5 can also enter the positioning column 24 through the venting notch 241, so that the water level in the positioning column 24 is consistent with the water level in the water tank body 5, and then the floating component 31 arranged in the positioning column 24 will float with the change of the water level.

[0050] The mounting member 2016 is also provided with a limiting column 25, and the top of the dirt suction column 23 is connected to a drain pipe 231, and the drain pipe 231 is connected to a one-way valve 2311, and the one-way valve 2311 is connected to the limiting column 25, and the limiting column 25 is provided with a drainage gap 251 from top to bottom. In this embodiment, the dirt suction column 23 is connected to the limiting column 25, and the top of the dirt suction column 23 is connected to a drain pipe 231, and the drain pipe 231 is connected to a one-way valve 2311, and the one-way valve 2311 extends into the limiting column 25 and is connected to the limiting column 25, and the limiting column 25 is provided with a drainage gap 251, and the drainage gap 251 is opened from top to bottom. The sewage in the cleaning tank 41 is discharged from the one-way valve 2311 into the limiting column 25 through the dirt suction column 23, and then discharged into the water tank body 5 from the drainage gap 251. The limiting column 25 limits the position of the sewage pipe 231, effectively ensuring that the sewage pipe 231 will not shake irregularly during the sewage discharge process and affect the sewage suction effect. A one-way valve 2311 is provided at the sewage pipe 231 to prevent the sewage in the water tank body 5 from flowing back from the sewage suction column 23 to the cleaning tank 41. In this embodiment, the limiting column 25 and the bottom plate 21 are also integrally formed.

[0051] Furthermore, a mounting hole 51 is provided at the bottom of the water tank body 5, and the negative pressure suction module 2 extends into the water tank body 5 from the mounting hole 51. Specifically, the mounting member 2016 includes a bottom plate 21 and a threaded sleeve 26, and the sewage suction column 23, the air suction column 22, the positioning column 24 and the limiting column 25 are all arranged on the bottom plate 21. A sewage suction hole 214 and an air suction hole 213 are provided on the bottom plate 21, and the sewage suction column 23 is arranged at the sewage suction hole 214, and the sewage suction column 23 is connected to the sewage suction hole 214; the air suction column 22 is arranged at the air suction hole 213, and the air suction column 22 is connected to the air suction hole 213. In addition, considering the air tightness of the connection of the negative pressure suction module 2, the bottom plate 21, the sewage suction column 23, the air suction column 22 and the positioning column 24 are integrally formed.

[0052] A connection portion 52 is provided at the bottom of the water tank body 5, and the threaded sleeve 26 is sleeved on the bottom plate 21 and threadedly connected to the connection portion 52 to achieve the connection and fixation between the negative pressure suction module 2 and the water tank body 5. In this embodiment, the connection portion 52 is provided at the mounting hole 51, and the connection portion 52 protrudes from the bottom of the water tank body 5. When installing, the negative pressure suction module 2 is extended into the inside of the water tank body 5 from the mounting hole 51, and then the threaded sleeve 26 is threadedly connected to the connection portion 52 to achieve the installation and fixation of the negative pressure suction module 2.

[0053] Furthermore, a sealing ring 27 is provided between the bottom plate 21 and the water tank body 5. Specifically, the sealing ring 27 is fixedly connected to the bottom plate 21 on the side facing the water tank body 5. The shape and size of the sealing ring 27 are adapted to the collision size of the end face of the connecting portion 52. When the threaded sleeve 26 is threadedly connected to the connecting portion 52, the bottom plate 21 and the sealing ring 27 are tightly pressed against the connecting portion 52, which effectively ensures the sealing of the connection and reduces the possibility of sewage in the water tank body 5 leaking from the connecting portion 52 during use.

[0054] Furthermore, the bottom plate 21 has a flange 211, which can be snap-fitted with the mounting hole 51, and a positioning rib 521 is provided on the inner side of the connecting portion 52. Accordingly, a positioning groove 212 is provided on the flange 211, and the positioning groove 212 cooperates with the positioning rib 521. When installing the negative pressure suction module 2, align the positioning groove 212 with the positioning rib 521, and then push the negative pressure suction module 2 into the water tank body 5, and tighten the threaded sleeve 26. The positioning rib 521 cooperates with the positioning groove 212 to position the installation of the negative pressure suction module 2, so that the negative pressure suction module 2 is installed in the water tank body 5 in a fixed installation direction.

[0055] The negative pressure suction module 2 is detachably connected to the water tank body 5, and the negative pressure suction module 2 can be completely removed from the water tank body 5 to clean the negative pressure suction module 2, thereby effectively reducing the difficulty of cleaning.

[0056] Reference Figures 3 to 9The present invention discloses a cleaning base station, including a water tank of the structure as described above, and also including a base station body 1 and a base 4. The base 4 is arranged below the base station body 1, and the water tank is arranged on the base station body 1. The water tank and the base station body 1 are detachably connected. An air pump 6 is also arranged in the base station body 1, and the air pump 6 is electrically connected to the base station body 1. A cleaning tank 41 is arranged on the base 4, and a negative pressure suction module 2 is connected to the air pump 6 and the cleaning tank 41. The air pump 6 exhausts air in the water tank body 5 through the negative pressure suction module 2, so that a negative pressure is formed in the water tank body 5, and the sewage in the cleaning tank 41 is sucked into the water tank body 5. An air pressure detection module 3 is also arranged on the base station body 1, and the air pressure detection module 3 is electrically connected to the base station body 1. The air pressure detection module 3 is used to detect the air pressure of the air path of the air pump 6. When the water level in the water tank body 5 reaches a predetermined value, the floating member 31 blocks the air hole 2221. At this time, the air pressure in the air extraction circuit rises, the air pressure detection module 3 sounds an alarm, and the base station body 1 receives the signal to control the air extraction pump 6 to stop the sewage extraction operation.

[0057] Reference Figures 3 to 7 The negative pressure suction module 2 connects the cleaning tank 41 and the water tank body 5. Specifically, one end of the vacuum column 22 is connected to the vacuum pump 6, and the other end is connected to the internal space of the water tank body 5; one end of the sewage suction column 23 is connected to the cleaning tank 41, and the other end is connected to the inside of the water tank body 5. The vacuum pump 6 evacuates air from the water tank body 5, so that a negative pressure is formed in the water tank body 5, and the sewage in the cleaning tank 41 is sucked into the water tank body 5 from the sewage suction column 23.

[0058] It should be noted that the base station body 1 is also provided with a control module and other basic components that a cleaning base station should have. The control module is electrically connected to the vacuum pump 6 and the air pressure detection module 3 to control the operation of each component. The specific installation structure and control principle can be referred to the existing technology and will not be elaborated here.

[0059] Reference Figure 3 and Fig. 9 The air pressure detection module 3 includes an air pressure sensor 33, which is arranged in the base station body 1, and the air pressure sensor 33 is located between the air pump 6 and the air pump column 22, for real-time detection of the air pressure during air extraction, that is, the air pressure sensor 33 is arranged in the air extraction air path of the air pump 6. The floating member 31 is arranged in the positioning column 24. When the water level in the water tank body 5 rises, the floating member 31 will float up accordingly. In this embodiment, the floating member 31 is provided with a soft glue 32 on one side facing the top of the positioning column 24. When the water level rises to a predetermined value, the soft glue 32 will block the positioning column 24, so that the air pump 6 cannot continue to extract air from the water tank body 5. At this time, the air extraction pressure becomes larger. When the air pressure detected by the air pressure sensor 33 reaches a predetermined value, an alarm is issued. After the base station body 1 receives the water full signal, the air extraction operation of the air pump 6 is stopped.

[0060] Reference Figures 3 to 9 In this embodiment, when the vacuum pump 6 evacuates the vacuum column 22, the gas inside the water tank body 5 enters the positioning column 24 through the air notch 241, enters the connecting pipe 221 through the air hole 2221, and then enters the vacuum column 22 through the connecting pipe 221 and is then discharged from the water tank body 5. After negative pressure is formed in the water tank body 5, the sewage in the cleaning tank 41 enters the water tank body 5 from the sewage suction column 23, and the floating part 31 floats up as the water level in the water tank body 5 rises. When the floating part 31 floats to a predetermined high position, the soft glue 32 abuts against the air hole 2221. Under the suction action of the vacuum pump 6, the soft glue 32 is tightly adsorbed on the air hole 2221, thereby blocking the air hole 2221. At this time, the vacuum pump 6 continues to pump air, which will increase the air pressure in the air path. When the air pressure reaches a predetermined high value of the air pressure sensor 33, the air pressure sensor 33 issues a water full alarm. At this time, the base station body 1 controls the vacuum pump 6 to stop working.

[0061] Furthermore, a voice broadcast component may be provided on the base station body 1. When the base station body 1 receives a water full signal, the voice broadcast component emits a sound prompt to remind the user that the water tank body 5 is full of water and sewage needs to be discharged.

[0062] Reference Figure 3 , Figure 4 , Figure 7 and Figure 8 The base station body 1 is provided with a mounting seat 11, and the mounting seat 11 is used to mount the water tank body 5. The mounting seat 11 is provided with a mounting groove 111, and the mounting member 2016 is installed in the mounting groove 111. The bottom of the mounting groove 111 is provided with an air suction joint 113 and a sewage suction joint 112 which are arranged one by one in correspondence with the air suction hole 213 and the sewage suction hole 214. During installation, the air suction joint 113 extends into the air suction hole 213 and is connected with the air suction hole 213; the sewage suction joint 112 extends into the sewage suction hole 214 and is connected with the sewage suction hole 214. The sewage suction joint 112 is connected to the cleaning tank 41. In this embodiment, the sewage suction joint 112 and the cleaning tank 41 are connected by a water pipe (not shown in the figure), and a sewage suction passage is formed between the cleaning tank 41, the water pipe, the sewage suction joint 112, the sewage suction hole 214 and the sewage suction column 23. The exhaust connector 113 is connected to the exhaust pump 6. In the present embodiment, the air inlet end of the exhaust pump 6 is connected to an air pipe (not shown in the figure). The exhaust pump 6 is connected to the exhaust connector 113 through the air pipe. An exhaust passage is formed between the exhaust pump 6, the air pipe, the exhaust connector 113, the exhaust hole 213 and the exhaust column 22.

[0063] Furthermore, in order to ensure the sealing of the connection between the sewage extraction hole 214 and the sewage extraction joint 112 , and between the air extraction hole 213 and the air extraction joint 113 , a tower-shaped sealing ring 27 is provided on the air extraction joint 113 and the sewage extraction joint 112 .

[0064] Furthermore, an air outlet connector 114 is provided on the bottom groove wall of the installation groove 111. The air outlet connector 114 is located in the installation groove 111 and is connected to the air outlet end of the air pump 6. A clearance groove 215 is provided on the installation part. In this embodiment, the clearance groove is provided on the bottom plate 21, and the air outlet connector 114 can extend into the clearance groove 215. When installing the water tank body 5, align the air outlet connector 114 with the clearance groove 215, which plays a positioning role in the installation of the water tank body 5, so as to ensure that when the water tank body 5 is installed on the base station body 1, the air extraction connector 113 and the air extraction hole 213, and the sewage extraction connector 112 and the sewage extraction hole 214 can correspond one to one. The gas extracted by the air pump 6 is discharged from the air outlet connector 114 into the installation groove 111, and then discharged to the outside of the base station body 1.

[0065] Furthermore, a drainage hole 115 is provided on the bottom wall of the installation groove 111, and the drainage hole 115 is connected to the cleaning groove 41. On the one hand, the gas discharged into the installation groove 111 by the vacuum pump 6 can be discharged from the drainage hole 115. On the other hand, the gas extracted from the water tank body 5 by the vacuum pump 6 is generally humid. The humid gas is introduced into the installation groove 111 and discharged from the drainage hole 115 to the cleaning groove 41 to ensure that the humid gas will not enter other parts of the base station body 1 and cause damage to the parts. In addition, if the water tank body 5 and the negative pressure suction module 2 have an accident such as water leakage, the drainage hole 115 can also discharge this part of the water into the cleaning groove 41 to ensure the safety of the equipment during use.

[0066] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A negative pressure suction module, characterized in that: It includes a mounting part, a vacuum column, a sewage suction column and a floating part; the mounting part is used to install the negative pressure suction module to the bottom of the water tank; the vacuum column is arranged on the mounting part, and is used to connect the inside of the water tank and the air source part; the sewage suction column is arranged on the mounting part, and is used to connect the inside of the water tank and the space where the liquid to be sucked is located; the floating part can change with the water level inside the water tank and can block the vacuum column.

2. A negative pressure suction module according to claim 1, characterized in that: The negative pressure suction module also includes a positioning column, which is arranged on the mounting member, the suction column is connected to the positioning column, a ventilation gap is opened on the side wall of the positioning column, and the floating member is arranged in the positioning column.

3. A negative pressure suction module according to claim 2, characterized in that: The top of the vacuum column is provided with a connecting pipe, the connecting pipe is connected to a connecting head, the connecting head is covered on the top of the positioning column, and the connecting head is provided with an air vent connected to the connecting pipe; Wherein, the floating member floats with the change of the water level inside the water tank and can block the air vent.

4. A negative pressure suction module according to claim 1, characterized in that: A limiting column is also provided on the mounting part. The top of the sewage suction column is connected to a sewage pipe, and the sewage pipe is connected to a one-way valve. The one-way valve is communicated with the limiting column. The limiting column is provided with a drainage gap from top to bottom.

5. A water tank, characterized in that: It comprises the negative pressure suction module according to any one of claims 1 to 4, and also comprises a water tank body, wherein a mounting hole is provided at the bottom of the water tank body, and the mounting hole cooperates with the mounting piece so that the negative pressure suction module can be detachably fixed to the water tank body.

6. A water tank according to claim 5, characterized in that: The water tank body is provided with a connecting portion, and the connecting portion is protruded from the mounting hole. The mounting part includes a base plate and a threaded sleeve, and the threaded sleeve is sleeved on the base plate. The vacuum column, the sewage suction column and the positioning column are all arranged on the base plate. The base plate is provided with sewage suction holes and vacuum holes, and the vacuum column is connected with the vacuum hole, and the sewage suction column is connected with the sewage suction hole, and the threaded sleeve is threadedly connected to the connecting portion.

7. A water tank according to claim 6, characterized in that: The bottom plate is provided with a flange, the flange is clamped in the mounting hole, a positioning ridge is provided on the inner side of the connecting portion, a positioning groove is provided on the flange, and the positioning groove cooperates with the positioning ridge.

8. A cleaning base station, characterized in that: It comprises the water tank as described in any one of claims 5-7, and also comprises a base station body and a base station base, the water tank body is arranged on the base station body, an air pump is arranged on the base station body, the air pump is connected to the air suction column, a cleaning tank is arranged on the base station body, the dirt suction column is connected to the cleaning tank, an air pressure detection module is arranged on the base station body, and the air pressure detection module is connected to the base station body electrical signal for detecting the suction air pressure.

9. A cleaning base station according to claim 8, characterized in that: A mounting seat for mounting a water tank is provided on the base station body, a mounting groove is provided on the mounting seat, an air extraction joint and a sewage extraction joint are provided at the bottom of the mounting groove, the mounting part is installed in the mounting groove, and the air extraction joint extends into the air extraction hole and is connected, the sewage extraction joint extends into the sewage extraction hole, the air extraction joint is connected to the air extraction pump, and the sewage extraction joint is connected to the cleaning tank.

10. A cleaning base station according to claim 9, characterized in that: The mounting seat is provided with an air outlet joint, the air outlet joint is located in the mounting groove, the air outlet joint is connected to the air outlet end of the air pump, and the mounting member is provided with a clearance groove, the air outlet joint can extend into the clearance groove; A drainage hole is provided on the bottom wall of the installation groove, and the drainage hole is connected to the cleaning groove.

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