Surface cleaning apparatus

Abstract

The utility model discloses surface cleaning equipment which comprises a shell, a motor and a liquid storage tank, the liquid storage tank comprises a liquid inlet and an air outlet, and in a first state, the liquid inlet is matched with a first connector, and the air outlet is matched with a second connector, so that a separation channel communicated with a liquid inlet channel and an air outlet channel is formed in the liquid storage tank; and in the second state, the liquid inlet is separated from the first connector, and the air outlet is separated from the second connector, so that the liquid storage tank can be taken out from the surface cleaning equipment. According to the surface cleaning equipment, the liquid storage tank adopts a pluggable design, and a user can conveniently take the liquid storage tank out of the shell, so that thorough cleaning and maintenance are carried out, the problem that a traditional fixed liquid storage tank is difficult to clean is effectively solved, accumulation of dirt and bacteria is avoided, and the use experience of the user is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, and in particular to a surface cleaning device. Background Technology

[0002] In existing technologies, the liquid storage tank of surface cleaning equipment is usually fixedly installed inside the main body of the equipment. This fixed structure causes many inconveniences for users when cleaning the inside of the storage tank, and it is difficult to thoroughly clean the inside of the storage tank. After prolonged use, dirt may accumulate inside the storage tank, bacteria may grow, odors may be produced, and even the normal function of the equipment may be affected. Therefore, the storage tank in existing surface cleaning equipment has the problems of difficult cleaning and unreliable hygiene, which urgently needs to be improved. Summary of the Invention

[0003] To address the problem of difficult-to-clean liquid storage tanks in existing surface cleaning equipment, the purpose of this invention is to provide a surface cleaning device that allows users to easily disassemble the liquid storage tank, thus facilitating its cleaning. 。

[0004] To achieve the above-mentioned objectives, one embodiment of this utility model provides a surface cleaning device, comprising:

[0005] The housing has an inlet and an outlet, and a communication channel is formed between the inlet and the outlet;

[0006] An electric motor is used to generate negative pressure to cause the medium to flow along the communicating channel;

[0007] A liquid storage tank, at least partially located in the communicating channel, for collecting liquid in the communicating channel;

[0008] The communication channel includes a liquid inlet channel from the inlet to the first interface, and an air outlet channel from the second interface to the outlet;

[0009] The liquid storage tank includes a liquid inlet and an air outlet. In a first state, the liquid inlet cooperates with the first interface, and the air outlet cooperates with the second interface to form a separate channel connecting the liquid inlet channel and the air outlet channel within the liquid storage tank. In a second state, the liquid inlet is disconnected from the first interface, and the air outlet is disconnected from the second interface, so that the liquid storage tank can be removed from the surface cleaning device.

[0010] As a further improvement of this utility model, a first sealing ring is sleeved on the outside of the first interface, and when the first interface is inserted into the liquid inlet, the first interface and the liquid inlet abut against the first sealing ring.

[0011] The second interface is fitted with a second sealing ring on its outer side. When the second interface is inserted into the air outlet, the second interface and the air outlet abut against the second sealing ring.

[0012] As a further improvement of this utility model, the liquid storage tank includes a tank body, a liquid inlet pipe and a gas outlet pipe, a liquid storage space is formed inside the liquid storage tank, and a first port and a second port are provided on the tank body;

[0013] The liquid inlet pipe is pluggably connected to the first port. One end of the liquid inlet pipe forms the liquid inlet, and the other end extends into the liquid storage space. The inner diameter of the liquid inlet pipe is equal to the inner diameter of the first port.

[0014] The vent pipe is pluggable to the second port, with one end of the vent pipe forming the vent and the other end extending into the liquid storage space.

[0015] As a further improvement of this utility model, a third sealing ring is sleeved on the outside of the liquid inlet pipe. When the liquid inlet pipe is inserted into the first port, the liquid inlet pipe and the first port abut against the third sealing ring.

[0016] The fourth sealing ring is sleeved on the outside of the vent pipe. When the vent pipe is inserted into the second port, the vent pipe and the second port abut against the fourth sealing ring.

[0017] As a further improvement of this utility model, a first engaging part is provided on the outer side of the first port, and the liquid inlet pipe is engaged with the first engaging part; a second engaging part is provided on the outer side of the second port, and the air outlet pipe is engaged with the second engaging part.

[0018] As a further improvement of this utility model, the surface cleaning device further includes a suction body, the suction body and the liquid storage tank are both disposed inside the housing, the suction body and the liquid storage tank are arranged longitudinally along the housing, the suction body includes a support assembly, a motor fixedly connected to the support assembly and an impeller driven by the motor, the support assembly forms the liquid inlet channel and the air outlet channel, the support assembly includes a first interface and a second interface facing the bottom longitudinally, and the bottom of the housing is provided with an opening;

[0019] In the second state, the liquid storage tank is separated from the first interface and the second interface, and can be removed from the opening.

[0020] As a further improvement of this utility model, the housing includes a side wall and a bottom cover, the bottom cover and the side wall are rotatably connected by a pivot, the side wall encloses the opening, and the bottom cover has a closed position that closes the opening and an open position away from the opening;

[0021] When the bottom cover is in the open position, the liquid storage tank can be moved in or out of the housing through the opening.

[0022] As a further improvement of this utility model, a locking part is provided on the side wall, and the bottom cover is engaged with the locking part at the closed position;

[0023] The liquid storage tank has a gripping groove on the side facing the bottom cover.

[0024] As a further improvement of this utility model, the liquid storage tank includes a drain hole and a drain plug on the side near the bottom cover. The drain plug is used to close or open the drain hole. When the bottom cover and the drain plug are opened, the liquid storage space inside the liquid storage tank is connected to the outside through the drain hole.

[0025] As a further improvement of this utility model, both the first interface and the second interface are provided with guide slopes, which are used to guide the first interface to be inserted into the liquid inlet and the second interface to be inserted into the air outlet.

[0026] Compared with commonly used technologies, this utility model has the following beneficial effects: The liquid storage tank of this surface cleaning device adopts a pluggable design, which allows users to easily remove the liquid storage tank from the housing for thorough cleaning and maintenance. This effectively solves the problem of difficult cleaning of traditional fixed liquid storage tanks, avoids the accumulation of dirt and bacteria, maintains the hygiene of the surface cleaning device and its normal operation. In addition, the pluggable liquid storage tank design also improves the ease of maintenance of the device. When parts need to be replaced, they can be directly removed and replaced. Therefore, the cleaner and easier-to-maintain structural design of the surface cleaning device enhances the user experience. Attached Figure Description

[0027] Figure 1 This is an exploded view of a surface cleaning device according to an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of a surface cleaning device according to an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0030] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0031] Figure 5 yes Figure 2 A magnified view of a section at point C;

[0032] Figure 6 This is an exploded view of the liquid storage tank according to an embodiment of the present invention;

[0033] Among them, 100, surface cleaning equipment; 10, shell; 11, side wall; 111, opening; 112, locking part; 12, bottom cover; 13, rotating shaft; 14, inlet; 15, outlet; 20, liquid storage tank; 21, box body; 210, liquid storage space; 211, first port; 212, second port; 213, drain hole; 214, drain plug; 215, gripping groove; 22, liquid inlet pipe; 221, liquid inlet; 222, third sealing ring; 223, first engaging part; 23, air outlet pipe; 231, air outlet; 232, fourth sealing ring; 233, second engaging part; 30, suction body; 31, support assembly; 311, first interface; 312, first sealing ring; 313, second interface; 314, second sealing ring; 315, guide slope; 32, motor; 33, impeller. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0035] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0036] One embodiment of this utility model provides a surface cleaning device that allows users to easily disassemble the liquid storage tank, thereby facilitating the cleaning of the liquid storage tank.

[0037] The surface cleaning device 100 of this embodiment can be used for window cleaning. That is, the surface cleaning device 100 can be a window scraper. The window scraper is attached to the window glass, and then the motor 32 is driven to suck the water attached to the glass from the suction nozzle. Gas and liquid are sucked into the window scraper together. After gas-liquid separation, the liquid remains in the window scraper and the gas is discharged.

[0038] A surface cleaning device 100 according to this embodiment includes a housing 10, a motor 32 and a liquid storage tank 20. The housing 10 has an inlet 14 and an outlet 15, and a communicating channel is formed between the inlet 14 and the outlet 15. The motor 32 is used to generate negative pressure to make the medium flow along the communicating channel.

[0039] like Figure 1As shown, housing 10 is the outer shell structure of surface cleaning device 100, having an inlet 14 and an outlet 15. Inlet 14 is used to introduce the medium to be cleaned (such as liquid on a window) from the outside; specifically, a long, narrow suction head can be installed at inlet 14. Outlet 15 is used to discharge gas. A connecting channel is formed within housing 10, connecting inlet 14 and outlet 15.

[0040] like Figure 2 and Figure 3 As shown, motor 32 provides negative pressure to drive the medium to flow along the connecting channel. Motor 32, through the negative pressure generated by driving components such as impeller 33, pushes the liquid into inlet 221 and discharges gas through outlet 231. The operation of motor 32 ensures a stable flow of the medium to the storage tank 20, achieving both cleaning and separation.

[0041] like Figures 1-4 As shown, the liquid storage tank 20 is at least partially located in the communicating channel for collecting liquid in the communicating channel; the communicating channel includes a liquid inlet channel from the inlet 14 to the first interface 311, and an air outlet channel from the second interface 313 to the outlet 15. The liquid storage tank 20 includes a liquid inlet 221 and an air outlet 231. In a first state, the liquid inlet 221 engages with the first interface 311, and the air outlet 231 engages with the second interface 313 to form a separate channel connecting the liquid inlet channel and the air outlet channel within the liquid storage tank 20; in a second state, the liquid inlet 221 is disengaged from the first interface 311, and the air outlet 231 is disengaged from the second interface 313, so that the liquid storage tank 20 can be removed from the surface cleaning device 100.

[0042] In this application, the liquid storage tank 20 is detachable. In its first state, the liquid inlet 221 of the liquid storage tank 20 engages with the first interface 311 inside the housing 10, and the gas outlet 231 engages with the second interface 313 inside the housing 10. Thus, liquid enters the liquid storage tank 20 through the liquid inlet 221, while gas is discharged through the gas outlet 231. The channel formed inside the liquid storage tank 20 separates the liquid inlet channel and the gas outlet channel, achieving separate collection of liquid and gas. This allows for effective separation of liquid and gas during the cleaning process, leaving wastewater within the liquid storage tank 20.

[0043] When the cleaning process is complete, or when cleaning and maintenance of the liquid storage tank 20 are required, the user simply removes the liquid storage tank 20 from the device. In the second state, the liquid inlet 221 of the liquid storage tank 20 is disconnected from the first interface 311, and the air outlet 231 is disconnected from the second interface 313, allowing the liquid storage tank 20 to be detached from the device. This structural design allows the liquid storage tank 20 to be easily removed and thoroughly cleaned, avoiding the cleaning difficulties associated with fixed designs. The ease of disassembly also improves the user experience and the efficiency of device maintenance.

[0044] In this embodiment, the separation of the liquid inlet channel and the gas outlet channel effectively separates the liquid and gas, ensuring a good cleaning effect. The liquid storage tank 20 can be easily removed for cleaning, avoiding the problem of the fixed liquid storage tank 20 in traditional surface cleaning equipment 100 being difficult to clean. This keeps the equipment hygienic, and the detachable design of the liquid storage tank 20 also increases the ease of maintenance and extends the service life of the equipment. This effectively solves the cleaning problems in the prior art and improves the user experience and cleaning effect of the equipment.

[0045] Furthermore, such as Figure 3 As shown, a first sealing ring 312 is sleeved on the outside of the first interface 311. When the first interface 311 is inserted into the liquid inlet 221, the first interface 311 and the liquid inlet 221 abut against the first sealing ring 312, that is, the liquid inlet 221 and the first interface 311 are sealed by the first sealing ring 312.

[0046] like Figure 4 As shown, the second sealing ring 314 is sleeved on the outside of the second interface 313. When the second interface 313 is inserted into the air outlet 231, the second interface 313 and the air outlet 231 abut against the second sealing ring 314, that is, the air outlet 231 and the second interface 313 are sealed by the second sealing ring 314.

[0047] The first sealing ring 312 and the second sealing ring 314 ensure that liquids and gases do not leak during the flow of liquids and gases within the surface cleaning equipment 100, preventing liquid spillage or gas leakage into the interior of the surface cleaning equipment 100, thereby maintaining the normal function of the equipment, effectively improving the safety and stability of the surface cleaning equipment 100, and ensuring the efficiency and reliability of the cleaning process.

[0048] Furthermore, such as Figure 6 As shown, the liquid storage tank 20 includes a tank body 21, an inlet pipe 22, and an outlet pipe 23. A liquid storage space 210 is formed inside the liquid storage tank 20. A first port 211 and a second port 212 are provided on the tank body 21. The inlet pipe 22 is pluggably connected to the first port 211. One end of the inlet pipe 22 forms an inlet port 221, and the other end extends into the liquid storage space 210. The inner diameter of the inlet pipe 22 is equal to the inner diameter of the first port 311. The outlet pipe 23 is pluggably connected to the second port 212. One end of the outlet pipe 23 forms an outlet port 231, and the other end extends into the liquid storage space 210.

[0049] When installing or cleaning the surface equipment 100, the inlet pipe 22 and outlet pipe 23 can be removed from the first port 211 and the second port 212, facilitating production and thorough cleaning of the storage tank 20. The inner diameter of the inlet pipe 22 is equal to the inner diameter of the first port 311 to ensure smooth flow of liquid and gas, avoid blockage, and improve the cleaning efficiency of the equipment. The plug-and-play connection of the inlet pipe 22 and the outlet pipe 23 allows the storage tank 20 to be quickly connected and disconnected from the surface cleaning equipment 100, further enhancing the ease of operation of the equipment.

[0050] like Figure 3 and 6 As shown, a third sealing ring 222 is sleeved on the outside of the inlet pipe 22. When the inlet pipe 22 is inserted into the first port 211, the third sealing ring 222 abuts against the inlet pipe 22 and the first port 211.

[0051] like Figure 4 and 6 As shown, the fourth sealing ring 232 is sleeved on the outside of the vent pipe 23. When the vent pipe 23 is inserted into the second port 212, the fourth sealing ring 232 abuts against the vent pipe 23 and the second port 212.

[0052] The third sealing ring 222 and the fourth sealing ring 232 improve the sealing effect between the liquid inlet pipe 22 and the first port 211, and between the air outlet pipe 23 and the second port 212, ensuring that the liquid inlet pipe 22 and the air outlet pipe 23 can effectively form a seal in the housing 21, preventing liquid or gas leakage and avoiding pollution and reduced cleaning efficiency caused by poor sealing.

[0053] Continue as Figure 6 As shown, a first engaging portion 223 is provided on the outer side of the first port 211, and the liquid inlet pipe 22 is engaged with the first engaging portion 223; a second engaging portion 233 is provided on the outer side of the second port 212, and the vent pipe 23 is engaged with the second engaging portion 233. This engaging connection ensures a secure connection between the liquid inlet pipe 22 and the vent pipe 23 and the liquid storage tank 20, preventing the pipes from loosening due to vibration or external force, thus improving the stability of the connection. Furthermore, it allows for quick disassembly and installation of the liquid storage tank 20, and the liquid inlet pipe 22 and the vent pipe 23 can be easily removed for cleaning.

[0054] Through the plug-in / plug-out connections of the liquid inlet pipe 22 and the air outlet pipe 23 with the first interface 311 and the second interface 313, and through the plug-in / plug-out connections of the liquid inlet pipe 22 and the air outlet pipe 23 with the first port 211 and the second port 212, the liquid storage tank 20 can be easily and quickly connected to or disconnected from the surface cleaning equipment 100. Furthermore, the liquid storage tank 20 itself can also be easily disassembled or assembled, greatly improving the ease of operation and user experience. The design of the first sealing ring 312, the second sealing ring 314, the third sealing ring 222, and the fourth sealing ring 232 also ensures sealing during the plugging and unplugging process, effectively preventing liquid and gas leakage, improving the operational stability of the surface cleaning equipment 100, and ensuring efficient cleaning. The above design improves the sealing performance, ease of operation, cleaning efficiency, and safety of the equipment, effectively solving the defects in the prior art, ensuring the long-term stable operation of the surface cleaning equipment 100 and a good user experience.

[0055] Furthermore, such as Figure 1 and 2 As shown, the surface cleaning device 100 also includes a suction body 30. The suction body 30 and the liquid storage tank 20 are both disposed inside the housing 10. The suction body 30 and the liquid storage tank 20 are arranged longitudinally along the housing 10. The suction body 30 includes a support assembly 31, a motor 32 fixedly connected to the support assembly 31, and an impeller 33 driven by the motor 32. The support assembly 31 has a liquid inlet channel and a gas outlet channel. The support assembly 31 includes a first interface 311 and a second interface 313 extending longitudinally towards the bottom. The bottom of the housing 10 is provided with an opening 111. In the second state, the liquid storage tank 20 is separated from the first interface 311 and the second interface 313 and can be taken out from the opening 111 for easy cleaning and maintenance.

[0056] To clearly illustrate the positions and directions described in this embodiment, the direction along the longitudinal direction towards the bottom is defined as "downward," and the opposite direction as "upward." The suction body 30 generates negative pressure, driving the mixture of water and air downwards along the inlet channel to the storage tank 20 via the rotation of the impeller 33. After the liquid remains in the storage tank 20, the separated gas is discharged upwards through the outlet channel. This structural design improves the compactness and integration of the equipment, making the negative pressure suction function more efficient and stable. Simultaneously, through the designed opening 111 and longitudinal arrangement, the storage tank 20 can be easily removed and cleaned in the vertical direction, avoiding the defects of fixed and difficult-to-disassemble storage tanks in traditional equipment.

[0057] like Figure 2 and 5As shown, the housing 10 includes a side wall 11 and a bottom cover 12. The bottom cover 12 is rotatably connected to the side wall 11 via a pivot 13. The side wall 11 encloses an opening 111. The bottom cover 12 has a closed position that closes the opening 111 and an open position that is away from the opening 111. When the bottom cover 12 is in the open position, the liquid storage tank 20 can be moved into or out of the housing 10 through the opening 111.

[0058] The design of the bottom cover 12 allows the liquid storage tank 20 to be easily moved in and out of the housing 10 through the opening 111. When the bottom cover 12 is in the closed position, the side wall 11 of the housing 10 and the bottom cover 12 together enclose the receiving space of the liquid storage tank 20; when the bottom cover 12 is in the open position, the liquid storage tank 20 can be easily removed or placed in through the opening 111. The rotating design of the bottom cover 12 allows users to more easily access the liquid storage tank 20 without completely disassembling the equipment, improving the operability of the equipment. This design is particularly suitable for daily cleaning and maintenance, avoiding the problem of incomplete cleaning caused by the difficulty in disassembling the liquid storage tank 20, and also preventing accidental loss after the bottom cover 12 is opened.

[0059] Furthermore, such as Figure 5 As shown, a locking part 112 is provided on the side wall 11. The bottom cover 12 is engaged with the locking part 112 in the closed position. The locking part 112 ensures that the bottom cover 12 will not easily fall off or be accidentally opened when in the closed position, thus ensuring the safety and stability of the equipment.

[0060] The liquid storage tank 20 is provided with a gripping groove 215 on the side facing the bottom cover 12, which provides support and operating force for the user when taking out or inserting the liquid storage tank 20. The user can easily disassemble and install the liquid storage tank 20, which improves the ease of operation of the equipment and reduces the difficulty of operation.

[0061] Continue as Figure 5 As shown, the liquid storage tank 20 includes a drain hole 213 and a drain plug 214 on the side near the bottom cover 12. The drain plug 214 is used to close or open the drain hole 213. When the bottom cover 12 and the drain plug 214 are opened, the liquid storage space 210 inside the liquid storage tank 20 is connected to the outside through the drain hole 213.

[0062] When liquid needs to be drained, the user can open the bottom cover 12 and, without removing the liquid storage tank 20, directly open the drain plug 214 to drain the liquid inside the storage tank 20 to the outside, thus emptying the liquid in the storage tank 20. This allows for drainage without disassembling the storage tank 20, greatly improving the ease of use of the cleaning equipment and making liquid drainage from the storage tank 20 simpler and more efficient. Furthermore, it reduces the number of times the first interface 311 and the second interface 313 are plugged and unplugged from the liquid inlet 221 and the air outlet 231, reducing wear and extending service life.

[0063] like Figure 3 and 4 As shown, both the first interface 311 and the second interface 313 are provided with guide slopes 315. The guide slopes 315 are used to guide the first interface 311 to be inserted into the liquid inlet 221 and the second interface 313 to be inserted into the air outlet 231. This ensures that when the liquid storage tank 20 is inserted, the liquid inlet pipe 22 and the air outlet pipe 23 can be automatically aligned with the interface, avoiding connection problems caused by inaccurate docking, improving the accuracy of the connection of the liquid storage tank 20, and enhancing the sealing performance of the equipment.

[0064] Compared with the prior art, this embodiment has the following beneficial effects:

[0065] The liquid storage tank 20 of the surface cleaning device 100 adopts a pluggable design, which allows users to easily remove the liquid storage tank 20 from the housing 10 for thorough cleaning and maintenance. This effectively solves the problem of difficult cleaning of traditional fixed liquid storage tanks 20, avoids the accumulation of dirt and bacteria, maintains the hygiene of the surface cleaning device 100 and ensures normal operation. In addition, the pluggable liquid storage tank 20 design also improves the ease of maintenance of the device. When parts need to be replaced, they can be directly removed and replaced. Therefore, the cleaner and easier-to-maintain structural design of the surface cleaning device 100 enhances the user experience.

[0066] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0067] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A surface cleaning apparatus, comprising: a housing having an inlet and an outlet, a communication passage being formed between the inlet and the outlet; a motor for generating negative pressure to flow a medium along the communication passage; a liquid storage tank at least partially located in the communication passage for collecting liquid in the communication passage; characterized in that: the communication passage comprises a liquid inlet passage from the inlet to a first interface, and a gas outlet passage from a second interface to the outlet; the liquid storage tank comprises a liquid inlet port and a gas outlet port, in a first state, the liquid inlet port is matched with the first interface, and the gas outlet port is matched with the second interface to form a separate passage in the liquid storage tank, which communicates the liquid inlet passage and the gas outlet passage; in a second state, the liquid inlet port is disengaged from the first interface, and the gas outlet port is disengaged from the second interface, so that the liquid storage tank can be taken out of the surface cleaning apparatus.

2. The surface cleaning apparatus of claim 1, wherein, a first sealing ring is sleeved outside the first interface, when the first interface is inserted into the liquid inlet port, the first interface and the liquid inlet port abut against the first sealing ring; a second sealing ring is sleeved outside the second interface, when the second interface is inserted into the gas outlet port, the second interface and the gas outlet port abut against the second sealing ring.

3. The surface cleaning apparatus of claim 2, wherein, the liquid storage tank comprises a tank body, a liquid inlet pipe and a gas outlet pipe, a liquid storage space is formed in the liquid storage tank, a first port and a second port are arranged on the tank body; the liquid inlet pipe is plug-connectable with the first port, one end of the liquid inlet pipe forms the liquid inlet port, and the other end of the liquid inlet pipe extends into the liquid storage space, an inner diameter of the liquid inlet pipe is equal to an inner diameter of the first interface; the gas outlet pipe is plug-connectable with the second port, one end of the gas outlet pipe forms the gas outlet port, and the other end of the gas outlet pipe extends into the liquid storage space.

4. The surface cleaning apparatus of claim 3, wherein, a third sealing ring is sleeved outside the liquid inlet pipe, when the liquid inlet pipe is inserted into the first port, the liquid inlet pipe and the first port abut against the third sealing ring; a fourth sealing ring is sleeved outside the gas outlet pipe, when the gas outlet pipe is inserted into the second port, the gas outlet pipe and the second port abut against the fourth sealing ring.

5. The surface cleaning apparatus of claim 3, wherein, a first clamping part is arranged outside the first port, and the liquid inlet pipe is clamped and connected with the first clamping part; a second clamping part is arranged outside the second port, and the gas outlet pipe is clamped and connected with the second clamping part.

6. The surface cleaning apparatus of claim 1, wherein, the surface cleaning apparatus further comprises a suction main body, the suction main body and the liquid storage tank are arranged in the housing, the suction main body and the liquid storage tank are arranged in a longitudinal direction of the housing, the suction main body comprises a support assembly, the motor fixedly connected with the support assembly, and an impeller driven by the motor, the support assembly forms the liquid inlet passage and the gas outlet passage, the support assembly comprises the first interface and the second interface which are directed to a bottom in the longitudinal direction, and an open top of the housing is arranged; in the second state, the liquid storage tank is separated from the first interface and the second interface, and can be taken out of the open top.

7. The surface cleaning apparatus of claim 6, wherein, The shell comprises a side wall and a bottom cover, the bottom cover is rotatably connected with the side wall through a rotating shaft, the side wall encloses the opening, and the bottom cover has a closed position for closing the opening and an open position away from the opening; When the bottom cover is in the open position, the liquid storage tank is moved in or out of the shell through the opening.

8. The surface cleaning apparatus of claim 7, wherein, The side wall is provided with a locking portion, and the bottom cover is clamped and connected with the locking portion in the closed position; The liquid storage tank is provided with a holding groove on the side close to the bottom cover.

9. The surface cleaning apparatus of claim 7, wherein, The liquid storage tank comprises a drain hole on the side close to the bottom cover and a drain plug for closing or opening the drain hole, and when the bottom cover and the drain plug are opened, the liquid storage space in the liquid storage tank is communicated with the outside through the drain hole.

10. The surface cleaning apparatus of claim 6, wherein, The first interface and the second interface are both provided with guide inclined surfaces for guiding the first interface to be inserted into the liquid inlet and guiding the second interface to be inserted into the gas outlet.

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