CN219331533U - Liquid storage tank, clean base station and valve body assembly - Google Patents

Abstract

The embodiment of the utility model discloses a liquid storage tank, which comprises: the box body is provided with a liquid inlet and an air port, and the air port is used for the air supply pump to pump negative pressure to the box body, so that external liquid flows into the box body from the liquid inlet; the blocking piece is arranged in the box body and can close the air port under the action of liquid floating force; the force application piece is used for applying force to the blocking piece so that the blocking piece keeps a state of closing the air port when the liquid level in the box body does not drop to a preset liquid level. The sealing piece provided by the utility model can keep the air port closed when the liquid level in the box body does not drop to the preset liquid level, and can drop under the action of gravity when the liquid level in the box body drops to the preset liquid level, so that the air port is opened. Therefore, the liquid storage tank does not need to be replenished along with use, so that the switching frequency of the power element or the control element can be reduced, and the power element or the control element is not easy to damage.

Description

Liquid storage tank, clean base station and valve body assembly

Technical Field

The embodiment of the utility model relates to the field of cleaning equipment, in particular to a liquid storage tank, a cleaning base station and a valve body assembly.

Background

Along with the development of technology, the types and functions of the cleaning devices are more and more complete. The cleaning apparatus may include a cleaning robot and a base station that may care for the cleaning robot, such as cleaning care, and when the cleaning robot is placed at the base station, the base station may spray water to the cleaning robot to clean cleaning members thereof.

For the base station capable of automatically supplying and discharging water, the base station is connected to an external water source such as a faucet through a water pipe, and water of the external water source is supplied to a base station water tank for water supplementing.

In the related art, after the water level in the water tank of the existing cleaning base station drops, for example, after mop washing is performed, the water replenishing power element and/or the control element are started, so that an external water source enters the water tank, namely, the water is replenished immediately after use. Thus, the power element or the control element needs to be repeatedly operated, so that the switching frequency is high, and the power element or the control element is easy to damage, thereby increasing maintenance cost.

Disclosure of Invention

The embodiment of the utility model mainly aims to provide a liquid storage tank and aims to solve the technical problem that the cost of the existing cleaning base station is high.

To achieve the above object, a first aspect of an embodiment of the present utility model provides a liquid storage tank, including:

The box body is provided with a liquid inlet and an air port, and the air port is used for the air supply pump to pump negative pressure to the box body, so that external liquid flows into the box body from the liquid inlet;

the blocking piece is arranged in the box body and can close the air port under the action of liquid floating force;

the force application piece is used for applying force to the blocking piece so that the blocking piece keeps a state of closing the air port when the liquid level in the box body does not drop to a preset liquid level.

In some embodiments, the force application member is disposed between the case and the blocking member for providing resistance against lowering of the blocking member; when the liquid level in the box body is higher than or equal to the preset liquid level, the force application piece keeps a state of closing the air port; when the liquid level in the box body is lower than the preset liquid level, the force application piece opens the air port.

In some embodiments, the force application member comprises at least one of: a magnetic attraction piece and an elastic clamping piece;

and/or the force application pieces are uniformly or symmetrically arranged along the circumferential direction of the air port.

In some embodiments, the closure comprises:

The blocking part is used for blocking the air port;

a floating portion for contacting with the liquid in the tank;

wherein the plugging part is formed on the top of the floating part; or the floating part and the plugging part body are arranged, the floating part and the plugging part are arranged at intervals transversely, and the floating part and the plugging part are connected through an intermediate connecting piece.

In some embodiments, the force application member comprises:

a first member disposed on the blocking member;

and the second component is arranged on the box body and is used for being matched with the first component so as to generate acting force for keeping the air port closed.

In some embodiments, one of the first and second members comprises a magnet and the other comprises a magnetically attractable metal; or, the first member and the second member each comprise a magnet, and the first member and the second member are in magnetic attraction fit;

and/or the first component comprises a clamping groove arranged at the side part of the plugging piece, and the second component comprises an elastic clamping piece arranged at the inner side wall of the box body and used for being clamped with the clamping groove.

In some embodiments, the second member is embedded in the inner wall of the port.

In some embodiments, a seal is disposed between the plug and the port, the seal disposed about the port.

In some embodiments, the reservoir further comprises:

the guide piece is connected to the box body, and the guide piece is matched with the outer side wall of the plugging piece, and the guide piece forms a guide space for limiting the moving direction of the plugging piece.

In some embodiments, the guide member is in a frame shape, and the guide member is sleeved outside the plugging member; alternatively, the guide member includes a plurality of guide members surrounding the blocking member, and the plurality of guide members are respectively in contact with the outer side walls of the blocking member.

In some embodiments, the inner wall of the box body is provided with a boss positioned at one side of the plugging piece, and the boss is provided with a through hole; the liquid storage tank still includes the joint, connect including first connecting pipe, second connecting pipe and third connecting pipe, first connecting pipe install in the boss and with the through-hole intercommunication, second connecting pipe and third connecting pipe respectively with first connecting pipe intercommunication, the second connecting pipe orientation the shutoff piece extends and has constructed the gas port, the third connecting pipe is close to the diapire of box is used for the extraction liquid in the box.

A second aspect of an embodiment of the present utility model proposes a liquid tank, including:

the box body is provided with a liquid inlet which is used for pumping external liquid into the box body by a water supply pump;

the blocking piece is arranged in the box body and can close the liquid inlet under the action of liquid floating force;

the force application piece is used for applying force to the blocking piece, so that the blocking piece keeps a state of closing the liquid inlet when the liquid level in the box body does not drop to a preset liquid level.

The utility model further provides a cleaning base station, which comprises the liquid storage tank described in each embodiment.

A third aspect of an embodiment of the present utility model provides a cleaning base station, including:

the base station comprises a base station body, wherein the base station body is provided with a liquid storage cavity, the base station body is provided with a liquid inlet and an air port, and the air port is used for an air supply pump to pump negative pressure to the liquid storage cavity, so that external water flows into the liquid storage cavity from the liquid inlet;

the blocking piece is arranged in the liquid storage cavity and can close the air port under the action of liquid floating force;

The force application piece is used for applying force to the blocking piece so that the blocking piece keeps a state of closing the air port when the liquid level of the liquid storage cavity does not drop to a preset liquid level.

A fourth aspect of an embodiment of the present utility model further provides a cleaning base station, including:

the base station comprises a base station body, wherein the base station body is provided with a liquid storage cavity, and the base station body is provided with a liquid inlet which is used for a water supply pump to pump external liquid into the liquid storage cavity, so that external water flows into the liquid storage cavity from the liquid inlet;

the blocking piece is arranged in the liquid storage cavity and can close the liquid inlet under the action of liquid buoyancy;

the force application piece is used for applying force to the blocking piece, so that the blocking piece keeps a state of closing the liquid inlet when the liquid level of the liquid storage cavity does not drop to a preset liquid level.

A fifth aspect of an embodiment of the present utility model also provides a valve body assembly configured to be mounted within a liquid reservoir, the valve body assembly comprising:

the connector comprises a first connecting pipe, a second connecting pipe and a third connecting pipe, wherein the second connecting pipe is provided with an air port, the air port is used for an air supply pump to pump negative pressure to the liquid storage tank, and the third connecting pipe is close to the bottom wall of the liquid storage tank and is used for pumping liquid in the liquid storage tank;

A blocking piece which can close the air port under the action of liquid buoyancy;

the force application piece is used for applying force to the blocking piece so that the blocking piece keeps a state of closing the air port when the liquid level of the liquid storage cavity does not drop to a preset liquid level.

In some embodiments, the valve body assembly further comprises:

the filter is arranged on the bottom wall of the box body, and one end of the third connecting pipe is inserted into the filter.

According to the technical scheme provided by the embodiment of the utility model, the sealing piece closes the air port under the state of full water, the sealing piece receives the liquid buoyancy and the acting force exerted by the force application piece, and meanwhile, the acting force exerted by the liquid buoyancy and the force application piece is larger than or equal to gravity, so that the sealing piece keeps closing the air port when the liquid level in the box body does not drop to the preset liquid level, and the acting force exerted by the liquid buoyancy and the force application piece is smaller than gravity until the liquid level in the box body drops to the preset liquid level, and at the moment, the sealing piece falls under the action of gravity, so that the air port is opened. Therefore, the liquid storage tank does not need to be replenished along with use, so that the switching frequency of the power element or the control element can be reduced, the power element or the control element is not easy to damage, and the maintenance cost is reduced.

Drawings

FIG. 1 is a schematic diagram of a liquid storage tank according to an embodiment of the utility model;

FIG. 2 is a schematic illustration of the structure of the tank of FIG. 1 without the fitting;

FIG. 3 is a schematic view of the internal structure of the liquid storage tank in FIG. 1;

FIG. 4 is a schematic view of the closure, force application member, seal, fitting and filter of FIG. 1;

FIG. 5 is a schematic diagram of the explosive structure of FIG. 4;

FIG. 6 is a schematic view of the internal structure of the closure, force application member, seal and joint;

FIG. 7 is an enlarged partial schematic view of FIG. 6 at A;

FIG. 8 is a schematic diagram of a structure of the blocking member and the force applying member according to the present utility model;

FIG. 9 is a schematic view of another structure of the blocking member and the force applying member according to the present utility model;

FIG. 10 is a schematic view of a closure member and a force application member according to another embodiment of the present utility model;

FIG. 11 is a schematic view of a closure member and a force application member according to another embodiment of the present utility model.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made more clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

An embodiment of the present utility model proposes a liquid storage tank, please refer to fig. 1 to 7, which includes:

the box body 10, the box body 10 is provided with a liquid inlet 20 and an air port 30, the air port 30 is used for the air supply pump to pump negative pressure to the box body 10, so that external liquid flows into the box body 10 from the liquid inlet 20;

the blocking piece 40 is arranged in the box body 10, and the blocking piece 40 can close the air port 30 under the action of liquid floating force;

the force application member 50, the force application member 50 is used to apply a force to the blocking member 40, so that the blocking member 40 keeps the state of closing the air port 30 when the liquid level in the tank 10 does not drop to the preset liquid level.

In this embodiment, the liquid storage tank is applied to a base station with an automatic water supply and drain function, wherein water supply means that external liquid is pumped into the liquid storage tank, and water drain means that the liquid in the liquid storage tank is pumped out. For example, the liquid storage tank is a clean water tank, and the base station pumps external clean water into the clean water tank after the liquid storage tank is filled with water, and similarly, the base station pumps the clean water out of the clean water tank after the liquid storage tank is filled with water, so that the clean water in the clean water tank is used for cleaning a nursing area of the base station and/or mops of the cleaning robot, and the like.

The liquid storage tank can adopt the pneumatic mode to carry out the drainage of liquid, namely this liquid storage tank need be equipped with an air pump and use promptly. Specifically, the liquid storage tank comprises a tank body 10, the tank body 10 is provided with a liquid inlet 20 and an air inlet 30, the liquid inlet 20 is used for allowing external liquid to flow into the tank body 10 from the liquid inlet, the air inlet 30 is communicated with the air inlet end of the air pump, and the air pump is used for pumping air in the tank body 10 to the outside from the air inlet 30, so that negative pressure is generated in the liquid storage tank, and the external liquid flows into the tank body 10 under the pressure difference between the atmospheric pressure and the internal air pressure of the liquid storage tank.

After the air pump pumps negative pressure to the box body 10 through the air port 30, external liquid gradually flows into the box body 10, and in the process of flowing the liquid into the box body 10, the plugging piece 40 positioned in the box body 10 is subjected to the action of liquid buoyancy, so that the plugging piece 40 gradually rises along with the rising of the liquid level in the box body 10. After the liquid level in the tank 10 reaches the preset liquid level, the plugging piece 40 will rise to the position of the plugging air port 30, at this time, since the air port 30 is plugged, the air pump can not pump the air in the tank 10 any more, that is: when the closure 40 closes the port 30, it indicates that the liquid level in the tank 10 has reached the maximum defined level.

Since the urging member 50 applies a force to the blocking member 40 that resists its falling downward, this force will be hereinafter referred to as a fall-resisting force, which coincides with the direction of the liquid floating force to which the blocking member 40 is subjected, but is opposite to the direction of the gravity to which the blocking member 40 is subjected. Namely: the plugging member 40 receives three forces in the vertical direction, namely, a falling-blocking force, a liquid buoyancy force and a gravity force, the falling-blocking force and the liquid buoyancy force being vertically upward, and the gravity force being vertically downward. When the liquid level in the tank 10 is the preset maximum liquid level, the resultant force of the blocking force provided by the force application member 50 and the liquid buoyancy force applied by the blocking member 40 is greater than the gravity force, and the blocking member 40 is in a state of blocking the air port 30.

As the liquid level rises, the greater the volume of the plugging member 40 immersed in the liquid, the greater the buoyancy force exerted, the less likely the plugging member 40 will fall off; while as the liquid level decreases, the smaller the volume of the plugging member 40 immersed in the liquid, the smaller the buoyancy force exerted, the more easily the plugging member 40 falls. When the liquid in the tank 10 starts to be pumped out, the liquid level in the tank 10 will gradually drop, the volume of the plugging member 40 immersed in the liquid will gradually decrease, the buoyancy of the liquid to which the plugging member 40 is subjected will also gradually decrease, and when the buoyancy is reduced to be smaller than the gravity force, the plugging member 40 will not fall down due to the existence of the falling-preventing force, but will continue to remain at the position of the plugging port 30. Then, the liquid in the box 10 continues to be pumped outwards, the buoyancy of the liquid borne by the blocking piece 40 also continues to be reduced, when the resultant force of the blocking piece 40 and the falling resistance is smaller than the gravity, the blocking piece 40 falls under the action of the gravity, so that the blocking piece 40 is separated from the air port 30, at the moment, the air port 30 is opened, negative pressure can be pumped in the box 10 through the air pump, and liquid feeding is realized. In some embodiments, the volume, weight, and/or configuration and performance of the closure 40, and/or the force application member 50, may be specifically designed such that when the liquid level drops to a minimum, the closure 40 is allowed to drop and the port 30 is opened, e.g., the closure 40 may be allowed to drop when the liquid within the tank 10 is completely or nearly empty. That is, it is possible to achieve liquid feeding in a state where the liquid in the tank 10 is substantially emptied. In the liquid feeding process, the blocking piece 40 continuously rises along with the liquid feeding until reaching the preset maximum liquid level, and the state of closing the air port 30 is maintained under the combined action of the liquid resistance of the force application piece 50 and the blocking piece 40.

For ease of understanding, the following description is provided in connection with a specific application scenario of the liquid storage tank:

for example, assuming that the liquid storage tank is a clean water tank, the capacity of the clean water tank is 30L, and the clean water tank is filled with clean water, at this time, the blocking member 40 is located at the position of the blocking air port 30, and is acted upon by both the falling resistance force and the liquid buoyancy force exerted by the force application member 50.

When the clear water tank starts to pump clear water to the outside, the liquid level in the clear water tank gradually drops, and the buoyancy of the liquid received by the blocking member 40 is gradually reduced.

It is assumed that the buoyancy of the liquid to which the blocking member 40 is subjected is reduced to less than the gravity force when the liquid level in the clear water tank drops to 20L. At this time, if the blocking member 40 is not subjected to the fall blocking force by the force application member 50, the blocking member 40 will fall downward under the force of gravity, so that the air port 30 is opened. Because the liquid level in the clean water tank drops, the control element of the water supply system of the base station is started immediately to control the air pump to pump air in the clean water tank, so that negative pressure is generated, and external clean water flows into the clean water tank until the clean water in the clean water tank is full, namely, the liquid level in the clean water tank reaches 30L. Therefore, the liquid storage tank needs to be replenished along with the use, so that the switching frequency of the power element (namely the air pump) or the control element is increased, the power element or the control element is easy to damage, and the maintenance cost is increased.

Because the liquid storage tank provided by the application is further provided with the force application member 50, the force application member 50 applies a falling-preventing force to the blocking member 40 when the blocking member 40 blocks the air port 30, so that the blocking member 40 can fall off when clear water in the clear water tank is completely emptied or almost emptied, and the air port 30 is opened. For example, it is assumed that when the liquid level in the clear water tank drops to 0, the blocking member 40 is subjected to only gravity and a fall-blocking force at this time, and the fall-blocking force is smaller than the gravity, and thus the blocking member 40 will fall under the gravity, thereby opening the air port 30. Alternatively, if the liquid level in the clear water tank is lowered to 2L, the buoyancy of the liquid received by the blocking member 40 is reduced to a resultant force with the fall-blocking force smaller than the gravity force, and at this time, the blocking member 40 falls under the gravity force, thereby opening the air port 30. Therefore, the liquid storage tank does not need to be replenished along with use (only water is needed), so that the switching frequency of the power element or the control element can be reduced, the power element or the control element is not easy to damage, and the maintenance cost is reduced.

The external liquid refers to liquid outside the liquid storage tank, may be tap water provided by an external tap, or may be clear water provided by an external water source of other entities, and is conveyed into the liquid storage tank through a pipeline. When the liquid storage tank is installed on the base station, the liquid storage tank can be a tap or a water tank arranged outside the base station.

In some embodiments, a force application member 50 is provided between the case 10 and the blocking member 40 for providing resistance against the lowering of the blocking member 40; when the liquid level in the tank 10 is higher than or equal to the preset liquid level, the force application member 50 keeps the state of closing the air port 30; when the liquid level in the tank 10 is lower than the preset liquid level, the force application member 50 opens the air port 30.

In this embodiment, the force application member 50 is disposed between the case 10 and the blocking member 40, and when the blocking member 40 moves up to the blocking port 30 along with the liquid level, the force application member 50 applies a resistance force, i.e., a falling resistance force F, to the blocking member 40 for preventing the blocking member 40 from falling _{Falling-preventing device} (at this time, F _{Falling-preventing device} +F _{Floating device} > G). Wherein the falling resistance F _{Falling-preventing device} The size of the stopper 40 determines how much liquid remains in the tank 10 when the closure 30 is opened, that is: when the residual quantity of the liquid in the tank 10 is lower than the preset liquid level, the blocking piece 40 receives the buoyancy force F of the liquid _{Floating device} And falling resistance F _{Falling-preventing device} Will be less than the force of gravity G (F _{Floating device} +F _{Falling-preventing device} < G) such that the closure 40 falls under the force of gravity, thereby opening the port 30. When the residual amount of the liquid in the tank 10 is higher than the preset liquid level, the plugging member 40 receives the buoyancy force F of the liquid _{Floating device} And falling resistance F _{Falling-preventing device} Is always greater than the gravity G (F) _{Falling-preventing device} +F _{Floating device} > G) such that the closure 40 always seals the port 30.

Further, the force application member 50 applies a fall-preventing force F to the blocking member 40 _{Falling-preventing device} The larger the blocking member 40 is, the smaller the remaining amount of liquid in the tank 10 is when the air port 30 is opened, and conversely, the smaller the blocking force applied by the urging member 50 is, the larger the remaining amount of liquid in the tank 10 is when the air port 30 is opened by the blocking member 40. For example, when the force application member 50 applies a fall-preventing force F to the blocking member 40 _{Falling-preventing device} At 40N, the remaining amount of liquid in the tank 10 may be 2L when the closure 40 opens the air port 30. For another example, when the force application member 50 applies the fall-preventing force F to the blocking member 40 _{Falling-preventing device} At 50N, the remaining amount of liquid in the tank 10 may be 1L when the closure 40 opens the air port 30. For another example, when the force application member 50 applies the fall-preventing force F to the blocking member 40 _{Falling-preventing device} At 30N, the remaining amount of liquid in the tank 10 may be 3L when the closure 40 opens the air port 30.

In some embodiments, the force application members 50 are uniformly or symmetrically disposed along the circumference of the gas port 30.

In the present embodiment, in order to equalize the stress of the blocking member 40, the urging members 50 are uniformly arranged along the circumferential direction of the gas port 30, or the urging members 50 are symmetrically arranged along the circumferential direction of the gas port 30. Thus, when the blocking member 40 blocks the air port 30, the force F is applied by the force applying member 50 _{Falling-preventing device} Can act on the blocking member 40 as uniformly as possible, so that when the liquid level in the tank 10 gradually drops to a level at which the blocking member 40 receives a liquid buoyancy force less than the gravity force, the blocking member 40 does not deflect toward a certain side, for example, the left side or the right side, of the gas port 30, thereby ensuring that the blocking member 40 completely blocks the gas port 30.

Further, assume that the force-applying member 50 applies a drop-resisting force F _{Falling-preventing device} The blocking member 40 is unevenly applied, for example, the blocking member 40 is subjected to a drop force of 40N (hereinafter referred to as a first drop force) at a position near the left side of the gas port 30, and the blocking member 40 is subjected to a drop force of 60N (hereinafter referred to as a second drop force) at a position near the right side of the gas port 30. Thus, in the liquid buoyancy F _{Floating device} Reduced to a resultant force with the first fall-stopping force less than gravity, and the liquid buoyancy force F _{Floating device} When the resultant force with the second blocking force is greater than the gravity force, the left portion of the blocking member 40 will be disengaged from the gas port 30, resulting in the blocking member 40 not being able to completely block the gas port 30, and thus resulting in the blocking member 40 not being able to reliably block the gas port 3.

In some embodiments, referring to fig. 5, the occluding component 40 comprises:

a blocking portion 41, the blocking portion 41 being used for blocking the gas port 30;

a floating portion 42 for contacting with the liquid in the tank 10;

Wherein the blocking portion 41 is formed on top of the floating portion 42; or the floating part 42 and the blocking part 41 are separately arranged, and the floating part 42 and the blocking part 41 are arranged at intervals along the transverse direction and are connected through an intermediate connecting piece 43.

In this embodiment, the blocking portion 41 may be disposed on top of the floating portion 42, or may be disposed at a lateral interval from the floating portion 42. When the plugging portion 41 is disposed on top of the floating portion 42, the plugging portion 41 may be integrally formed with the floating portion 42, or may be in a split structure with the floating portion 42, and the interior of the floating portion 42 is hollow, and may float to a position where the gas port 30 is plugged along with the rising of the liquid level in the tank 10, specifically, the gas port 30 is plugged by the plugging portion 41. When the plugging portion 41 and the floating portion 42 are disposed at a lateral interval, they are connected by an intermediate connecting member 43, and in this case, the floating portion 42 may be disposed in two, two floating portions 42 are disposed on two sides of the plugging portion 41, or the floating portion 42 may be disposed in plurality, and the floating portions 42 are disposed symmetrically about the plugging portion 41.

In some embodiments, referring to fig. 8 to 11, the force application member 50 according to the present utility model may include at least one of the following: the magnetic attraction piece and the elastic clamping piece.

In this embodiment, referring to fig. 8, the force application member 50 includes a magnetic member, and the blocking portion 41 is disposed on top of the floating portion 42. The left drawing is a schematic view of the plugging portion 41 plugging the gas port 30, and the right drawing is a schematic view of the plugging portion 41 opening the gas port 30.

Referring to fig. 9, the force application member 50 includes a magnetic member, the blocking portion 41 is disposed on top of the floating portion 42, and the blocking portion 41 and the floating portion 42 are in a split structure, and the blocking portion 41 and the floating portion 42 are connected by an intermediate connection member 43. It should be noted that, in some embodiments, the floating portions 42 may include at least two, and when specifically disposed, two floating portions 42 may be symmetrically disposed about the plugging portion 41, or a plurality of floating portions 42 may be uniformly disposed around the plugging portion 41, so that the force applied by the liquid to the whole plugging member 40 is more balanced.

In some embodiments, referring to fig. 5, the force application member 50 may comprise:

a first member 51 disposed on the occluding component 40;

a second member 52 is provided on the case 10 for cooperating with the first member 51 to generate a force for keeping the air port 30 closed.

In this embodiment, the force application member 50 includes two portions, which are a first member 51 and a second member 52, respectively, that are provided separately. Wherein the first member 51 is disposed on the blocking member 40, and the second member 52 is disposed on the case 10, the first member 51 and the second member 52 cooperate with each other to generate a force for keeping the air port 30 closed, i.e., a fall-blocking force, when the blocking member 40 blocks the air port 30.

In some embodiments, one of the first member 51 and the second member 52 comprises a magnet, and the other comprises a magnetically attractable metal; alternatively, the first member 51 and the second member 52 each include a magnet, and the first member 51 and the second member 52 are magnetically engaged.

In the present embodiment, the first member 51 and the second member 52 generate a blocking force F for blocking the plugging member 40 from falling off by means of magnetic attraction _{Falling-preventing device} The first member 51 and the second member 52 may each include a magnet, or one of the first member 51 and the second member 52 may include a magnet, and the other may include a magnetically attractable metal, such as a sheet iron. When the closure 40 closes the port 30, the first member 51 on the closure 40 contacts and magnetically attracts the second member 52 on the housing 10.

In some embodiments, referring to fig. 6 and 7, the second member 52 is embedded in the inner wall of the port 30.

Illustratively, the inner wall of the gas port 30 is provided in a ring shape, the second member 52 is a ring-shaped magnet, the first member 51 may be a circular iron sheet, and the ring-shaped magnet may be embedded in the inner wall of the gas port 30 and flush with the outer end surface of the gas port 30 or protrude from the outer end surface of the gas port 30, so that the ring-shaped magnet can be in contact with the circular iron sheet and magnetically connected. The ring magnet can be of an integrated structure or of a split structure, for example, the ring magnet is formed by encircling two crescent magnets.

In some embodiments, referring to fig. 7, a seal 60 is disposed between the blocking portion 41 and the port 30, the seal 60 being disposed around the port 30.

In this embodiment, in order to ensure the sealing property when the blocking member 40 blocks the gas port 30, a sealing member 60 is provided between the blocking portion 41 and the gas port 30, and the sealing member 60 is provided around the center of the gas port 30. Wherein the seal 60 may be an O-ring. For example, the seal 60 may be provided outside the second member 52, or the seal 60 may be provided inside the second member 52, or the seal 60 may be provided on the bottom surface of the first member 51 (as shown in fig. 7). For the form in which the seal 60 is disposed outside the second member 52, or in which the seal 60 is disposed inside the second member 52, the seal 60 may be slightly protruded with respect to the bottom surface of the second member 52, so that the seal 60 can be elastically deformed when the first member 51 and the second member 52 are magnetically engaged, thereby ensuring the air tightness of the air port 30. In the form in which the seal 60 is provided on the bottom surface of the first member 51, the thickness of the seal 60 may be slightly smaller so as not to affect the suction force between the first member 51 and the second member 52 as much as possible.

In some embodiments, please refer to fig. 10 or 11, wherein the left side is a schematic view of the plugging portion 41 plugging the gas port 30, and the right side is a schematic view of the plugging portion 41 opening the gas port 30.

The force application member 50 includes an elastic catching member by which the blocking member 40 is caught to prevent the blocking member 40 from falling down. Specifically, the first member 51 includes a clamping groove provided on a side portion of the plugging member 40, and the second member 52 includes an elastic clamping member provided on an inner sidewall of the case for being clamped with the clamping groove. As shown in fig. 10, the locking groove (first member 51) may be provided on the side wall of the blocking portion 41.

Referring to fig. 11, the blocking portion 41 and the floating portion 42 are in a split structure, and the blocking portion 41 and the floating portion 42 are connected by an intermediate connecting member 43. The left drawing is a schematic view of the plugging portion 41 plugging the gas port 30, and the right drawing is a schematic view of the plugging portion 41 opening the gas port 30. It should be noted that, in some embodiments, the floating portions 42 may include at least two, and when specifically disposed, two floating portions 42 may be symmetrically disposed about the plugging portion 41, or a plurality of floating portions 42 may be uniformly disposed around the plugging portion 41, so that the force applied by the liquid to the whole plugging member 40 is more balanced. As shown in fig. 11, the locking groove (first member 51) may be provided on a side wall of the floating portion 42.

In some embodiments, referring to fig. 4 and 5, the liquid storage tank may further include:

The guide member 70, the guide member 70 is connected to the case 10, and the guide member 70 is engaged with the outer sidewall of the blocking member 40, and the guide member 70 forms a guide space for restricting the moving direction of the blocking member 40.

In this embodiment, in order to ensure that the blocking member 40 moves in a predetermined direction (without lateral deflection) when the blocking member 40 is lifted and lowered, a guide member 70 may be provided in the case 10 to guide the movement of the blocking member 40 by the guide member 70. The guide 70 may be formed with a guide space for restricting the movement direction of the blocking member 40, in which the blocking member 40 is located, and an outer sidewall thereof is fitted with the guide space.

In some embodiments, referring to fig. 4 and 5, the guide member 70 is in a frame shape, and the guide member 70 is sleeved on the outer side of the plugging member 40; alternatively, the guide 70 may comprise a plurality of guides 70 surrounding the occluding component 40, with the plurality of guides 70 respectively contacting the outer side walls of the occluding component 40.

In this embodiment, the guide member 70 is configured as a frame structure, and the blocking member 40 is sleeved in the guide member 70 and slidably connected thereto. Alternatively, the guide 70 may comprise a plurality of guide members 70 surrounding the circumference of the occluding component 40 to collectively guide the movement of the occluding component 40.

In some embodiments, referring to fig. 2 and 5, the inner wall of the case 10 is provided with a boss 80 located at one side of the blocking member 40, and the boss 80 is configured with a through hole 90; the liquid storage tank further comprises a joint 100, the joint 100 comprises a first connecting pipe 101, a second connecting pipe 102 and a third connecting pipe 103, the first connecting pipe 101 is installed on the boss 80 and is communicated with the through hole 90, the second connecting pipe 102 and the third connecting pipe 103 are respectively communicated with the first connecting pipe 101, the second connecting pipe 102 extends towards the plugging piece 40 and is provided with an air port 30, and the third connecting pipe 103 is close to the bottom wall of the tank body 10 and is used for extracting liquid in the tank body 10.

In this embodiment, the connector 100 includes a first connecting tube 101, a second connecting tube 102 and a third connecting tube 103, where the first connecting tube 101 is fixedly installed on the boss 80 and is communicated with the through hole 90, one end of the second connecting tube 102 is configured with the air port 30, and the third connecting tube 103 is disposed near the bottom wall of the tank 10 for extracting the liquid in the tank 10. The air pump pumps the box 10 through the through hole 90, the first connecting pipe 101, the second connecting pipe 102 and the air hole 30, and when the liquid in the box 10 is full, the air hole 30 is blocked by the blocking piece 40. When it is necessary to pump out the liquid in the tank 10 to the outside, the air pump is operated to pump out the liquid in the tank 10 through the through-hole 90, the first connection pipe 101 and the third connection pipe 103.

Some embodiments of the present utility model further provide a liquid storage tank for pumping and draining liquid therein by using a water pump, the liquid storage tank comprising:

the box body 10, the box body 10 is provided with a liquid inlet 20', the liquid inlet 20' is used for pumping external liquid into the box body 10 by a water supply pump;

the blocking piece 40 is arranged in the box body 10, and the blocking piece 40 can close the liquid inlet 20' under the action of liquid floating force;

the force application member 50, the force application member 50 is configured to apply a force to the blocking member 40, so that the blocking member 40 keeps a state of closing the liquid inlet 20' when the liquid level in the tank 10 does not drop to a preset level.

In this embodiment, referring to fig. 6, a liquid inlet 20' is provided at the top of the tank 10, and is connected to a water pump through a pipe, and the water pump is used to pump the liquid in the tank 10 to the outside or pump the liquid from the outside into the tank 10.

As the liquid level rises, the greater the volume of the plugging member 40 immersed in the liquid, the greater the buoyancy force exerted, the less likely the plugging member 40 will fall off; while as the liquid level decreases, the smaller the volume of the plugging member 40 immersed in the liquid, the smaller the buoyancy force exerted, the more easily the plugging member 40 falls. When the tank 10 is full of liquid, the blocking member 40 is under the buoyancy force F of the liquid _{Floating device} To the position of the closure liquid inlet 20', and at the same time, the force application member 50 applies a fall-preventing force F to the closure member 40 for preventing it from falling down _{Falling-preventing device} (at this time, F _{Falling-preventing device} +F _{Floating device} > G). When the liquid in the tank 10 starts to be pumped out, the liquid level in the tank 10 gradually drops, the volume of the plugging member 40 immersed in the liquid gradually decreases, and the plugging member 40 receives the buoyancy force F of the liquid _{Floating device} Will also gradually decrease, and when decreasing to less than the force of gravity G, the closure member 40 will still not fall downwardly due to the presence of the fall-blocking force, but will continue to remain in place to block the liquid inlet 20'. Then, the liquid in the tank 10 is continuously pumped outwards, the buoyancy of the liquid received by the plugging member 40 is continuously reduced, and the buoyancy is reduced to the buoyancy F _{Floating device} And falling resistance F _{Falling-preventing device} When the resultant force of (F) is smaller than the gravity G _{Floating device} +F _{Falling-preventing device} < G), the blocking member 40 will drop under the force of gravity G, so that the blocking member 40 is disengaged from the liquid inlet 20', at which time the liquid inlet 20' is opened and the water pump pumps the external liquid into the tank 10. In some embodiments, the volume, weight, and/or configuration and performance of the closure member 40, and/or the force application member 50, may be specifically designed such that when the liquid level drops to a minimum, the closure member 40 is allowed to drop to open the liquid inlet 20', e.g., the closure member 40 may be allowed to drop when the liquid within the tank 10 is completely or nearly empty. That is, it is possible to achieve liquid feeding in a state where the liquid in the tank 10 is substantially emptied. In the liquid feeding process, the blocking piece 40 continuously rises along with the liquid feeding until reaching the preset maximum liquid level, and the liquid inlet 20' is kept closed under the combined action of the liquid resistance of the force application piece 50 and the blocking piece 40.

Further, for the structural design of the blocking member 40 and the force application member 50, please refer to the descriptions of the foregoing embodiments, and the blocking member 40 and the force application member 50 described in the foregoing embodiments are applicable to the present embodiment, and the applicant will not further describe herein.

Some embodiments of the present utility model further provide a cleaning base station, including the liquid storage tank described in the foregoing embodiments, where the specific structure of the liquid storage tank refers to the foregoing embodiments, and since the cleaning base station adopts all the technical solutions of all the foregoing embodiments, at least all the technical effects brought by the technical solutions of the foregoing embodiments are not described herein in detail.

Some embodiments of the present utility model also provide another cleaning base station, comprising:

the base station body is provided with a liquid storage cavity, the base station body is provided with a liquid inlet 20 and an air inlet 30, and the air inlet 30 is used for pumping negative pressure to the liquid storage cavity by an air supply pump, so that external liquid flows into the liquid storage cavity from the liquid inlet 20;

the blocking piece 40 is arranged in the liquid storage cavity, and the blocking piece 40 can close the air port 30 under the action of liquid floating force;

the force application member 50, the force application member 50 is used to apply a force to the blocking member 40, so that the blocking member 40 keeps the state of closing the air port 30 when the liquid level of the liquid storage cavity does not drop to the preset liquid level.

In this embodiment, the base station body is formed with a liquid storage cavity, a liquid inlet 20 and an air inlet 30, and both the liquid inlet 20 and the air inlet 30 are communicated with the liquid storage cavity. It can be understood that the design of the liquid storage chamber is replaced by the liquid storage chamber in this embodiment, and the other structural designs are the same as the related structures described in the foregoing embodiments, which are not described in detail herein.

Some embodiments of the present utility model provide another cleaning base station comprising:

the base station body is provided with a liquid storage cavity, and the base station body is provided with a liquid inlet 20', wherein the liquid inlet 20' is used for pumping external liquid into the liquid storage cavity by a water supply pump, so that external water flows into the liquid storage cavity from the liquid inlet 20';

the blocking piece 40 is arranged in the liquid storage cavity, and the blocking piece 40 can close the liquid inlet 20' under the action of liquid buoyancy;

the force application member 50, the force application member 50 is configured to apply a force to the blocking member 40, so that the blocking member 40 keeps a state of closing the liquid inlet 20' when the liquid level of the liquid storage cavity does not drop to a preset liquid level.

In this embodiment, the base station body is formed with a liquid storage cavity and a liquid inlet 20', and the liquid inlet 20' is communicated with the liquid storage cavity. It can be understood that the design of the liquid storage chamber is replaced by the liquid storage chamber in this embodiment, and the other structural designs are the same as the related structures described in the foregoing embodiments, which are not described in detail herein.

Some embodiments of the present utility model provide a valve body assembly configured to be mounted within a tank 10, the valve body assembly comprising:

the connector 100 comprises a first connecting pipe 101, a second connecting pipe 102 and a third connecting pipe 103, wherein the second connecting pipe 102 is provided with an air port 30, the air port 30 is used for pumping negative pressure to the liquid storage tank by the air supply pump, and the third connecting pipe 103 is close to the bottom wall of the liquid storage tank and is used for pumping liquid in the liquid storage tank;

a blocking member 40, wherein the blocking member 40 can close the air port 30 under the action of the liquid buoyancy;

the force application member 50, the force application member 50 is used to apply a force to the blocking member 40, so that the blocking member 40 keeps the state of closing the air port 30 when the liquid level of the liquid storage cavity does not drop to the preset liquid level.

In some embodiments, the valve body assembly further comprises:

a filter 200 provided at the bottom wall of the case 10, and one end of the third connection pipe 103 inserted into the filter 200.

The structure and function of the valve body assembly in this embodiment are the same as those of the related structure in the liquid storage tank, and specific reference may be made to the detailed description of the foregoing embodiment, which is not repeated herein by the applicant.

Those skilled in the art may combine and combine the features of the different embodiments or examples described in this specification and of the different embodiments or examples without contradiction.

The above description of the preferred embodiments of the present utility model should not be taken as limiting the scope of the utility model, but rather should be understood to cover all modifications, variations and adaptations of the present utility model using its general principles and the following detailed description and the accompanying drawings, or the direct/indirect application of the present utility model to other relevant arts and technologies.

Claims (15)

1. A liquid storage tank, comprising:

the box body is provided with a liquid inlet and an air port, and the air port is used for the air supply pump to pump negative pressure to the box body, so that external liquid flows into the box body from the liquid inlet;

the blocking piece is arranged in the box body and can close the air port under the action of liquid floating force;

the force application piece is used for applying force to the blocking piece so that the blocking piece keeps a state of closing the air port when the liquid level in the box body does not drop to a preset liquid level.

2. A liquid storage tank according to claim 1, wherein the force application member is provided between the tank body and the blocking member for providing resistance against lowering of the blocking member;

When the liquid level in the box body is higher than or equal to the preset liquid level, the force application piece keeps a state of closing the air port;

when the liquid level in the box body is lower than the preset liquid level, the force application piece opens the air port.

3. The reservoir of claim 2, wherein the force-applying member comprises at least one of: a magnetic attraction piece and an elastic clamping piece;

and/or the force application pieces are uniformly or symmetrically arranged along the circumferential direction of the air port.

4. A tank according to claim 2, wherein the closure comprises:

the blocking part is used for blocking the air port;

a floating portion for contacting with the liquid in the tank;

wherein the plugging part is formed on the top of the floating part; or the floating part and the plugging part body are arranged, the floating part and the plugging part are arranged at intervals in the transverse direction, and the floating part and the plugging part are connected through an intermediate connecting piece.

5. A reservoir according to claim 1, wherein the force applying member comprises:

a first member disposed on the blocking member;

and the second component is arranged on the box body and is used for being matched with the first component so as to generate acting force for keeping the air port closed.

6. A liquid storage tank as claimed in claim 5, wherein,

one of the first member and the second member comprises a magnet, and the other comprises a magnetically attractable metal; or, the first member and the second member each comprise a magnet, and the first member and the second member are in magnetic attraction fit;

and/or the second component is embedded in the inner wall of the air port;

and/or the first component comprises a clamping groove arranged at the side part of the plugging piece, and the second component comprises an elastic clamping piece arranged at the inner side wall of the box body and used for being clamped with the clamping groove.

7. A tank according to claim 4, wherein a seal is provided between the closure and the port, the seal being provided around the port.

8. The tank of any one of claims 1 to 7, further comprising:

the guide piece is connected to the box body, and the guide piece is matched with the outer side wall of the plugging piece, and the guide piece forms a guide space for limiting the moving direction of the plugging piece.

9. The liquid storage tank according to claim 8, wherein the guide piece is in a frame shape, and the guide piece is sleeved on the outer side of the plugging piece;

Alternatively, the guide member includes a plurality of guide members surrounding the blocking member, and the plurality of guide members are respectively in contact with the outer side walls of the blocking member.

10. A tank according to claim 1, wherein the inner wall of the tank body is provided with a boss on one side of the blocking member, the boss being configured with a through opening;

the liquid storage tank still includes the joint, connect including first connecting pipe, second connecting pipe and third connecting pipe, first connecting pipe install in the boss and with the through-hole intercommunication, second connecting pipe and third connecting pipe respectively with first connecting pipe intercommunication, the second connecting pipe orientation the shutoff piece extends and has constructed the gas port, the third connecting pipe is close to the diapire of box is used for the extraction liquid in the box.

11. A liquid storage tank, comprising:

the box body is provided with a liquid inlet which is used for pumping external liquid into the box body by a water supply pump;

the blocking piece is arranged in the box body and can close the liquid inlet under the action of liquid floating force;

the force application piece is used for applying force to the blocking piece, so that the blocking piece keeps a state of closing the liquid inlet when the liquid level in the box body does not drop to a preset liquid level.

12. A cleaning base station comprising a tank according to any one of claims 1 to 10 or a tank according to claim 11.

13. A cleaning base station, comprising:

the base station comprises a base station body, wherein the base station body is provided with a liquid storage cavity, the base station body is provided with a liquid inlet and an air port, and the air port is used for an air supply pump to pump negative pressure to the liquid storage cavity, so that external water flows into the liquid storage cavity from the liquid inlet;

the blocking piece is arranged in the liquid storage cavity and can close the air port under the action of liquid floating force;

the force application piece is used for applying force to the blocking piece so that the blocking piece keeps a state of closing the air port when the liquid level of the liquid storage cavity does not drop to a preset liquid level.

14. A cleaning base station, comprising:

the base station comprises a base station body, wherein the base station body is provided with a liquid storage cavity, and the base station body is provided with a liquid inlet which is used for a water supply pump to pump external liquid into the liquid storage cavity, so that external water flows into the liquid storage cavity from the liquid inlet;

the blocking piece is arranged in the liquid storage cavity and can close the liquid inlet under the action of liquid buoyancy;

The force application piece is used for applying force to the blocking piece, so that the blocking piece keeps a state of closing the liquid inlet when the liquid level of the liquid storage cavity does not drop to a preset liquid level.

15. A valve body assembly configured to be mounted within a liquid reservoir, comprising:

the connector comprises a first connecting pipe, a second connecting pipe and a third connecting pipe, wherein the second connecting pipe is provided with an air port, the air port is used for an air supply pump to pump negative pressure to the liquid storage tank, and the third connecting pipe is close to the bottom wall of the liquid storage tank and is used for pumping liquid in the liquid storage tank;

a blocking piece which can close the air port under the action of liquid buoyancy;

the force application piece is used for applying force to the blocking piece so that the blocking piece keeps a state of closing the air port when the liquid level of the liquid storage tank does not drop to a preset liquid level.

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