Liquid pumping system, cleaning base station comprising liquid pumping system and cleaning system

Abstract

The utility model provides a liquid pumping system, a cleaning base station comprising the liquid pumping system and a cleaning system. The liquid pumping system comprises a liquid storage container, a liquid inlet pipeline, a first negative pressure device and an on-off assembly. The liquid inlet pipeline is communicated to the liquid storage container; an extraction opening of the first negative pressure device is communicated to the liquid storage container; the on-off assembly is arranged corresponding to the liquid inlet pipeline and has a first state for blocking the liquid inlet pipeline and a second state for communicating the liquid inlet pipeline; wherein the on-off assembly is switched to the first state, the first negative pressure device extracts air from the liquid storage container to enable the negative pressure in the liquid storage container to reach a set threshold value, and under the condition that the negative pressure in the liquid storage container is kept at the set threshold value, the on-off assembly is switched to the second state; the negative pressure of the liquid storage container enables external liquid to enter the liquid storage container through the liquid inlet pipeline. The liquid pumping system can solve the technical problems that in the process that an existing liquid pumping system pumps sewage in the sewage tank, bubble sound is obvious, and the duration time is long.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cleaning equipment, concretely relates to a liquid pumping system and contain the cleaning base station, cleaning system of the liquid pumping system. BACKGROUND

[0002] The cleaning base station is the matched component of the cleaning equipment, and usually needs to wash the cleaning component of the cleaning equipment, and the sewage is usually gathered in the washing tank at the bottom of the cleaning base station in the washing process, needs to adopt the liquid pumping system to suck the sewage to the liquid storage container in the liquid pumping system and stores, the liquid pumping system on the existing cleaning base station usually sucks the sewage in the sewage tank by using the negative pressure of the liquid storage container through the straight pipe on one side while sucking the negative pressure of the liquid storage container on one side in the process, this leads to the obvious bubble in the sucking process, and the duration is long, influences the customer experience. Therefore, a liquid pumping system and a cleaning base station and a cleaning system containing the liquid pumping system need to be provided to improve the above problems. SUMMARY

[0003] In view of the above shortcomings of the prior art, the utility model provides a liquid pumping system and a cleaning base station and a cleaning system containing the liquid pumping system to improve the technical problem that the bubble is obvious and the duration is long in the process of sucking the sewage in the sewage tank in the cleaning base station.

[0004] To achieve the above object and other related objects, the utility model provides a liquid pumping system, which comprises a liquid storage container, a liquid inlet pipeline, a first negative pressure device and an on-off component, the liquid inlet pipeline is communicated to the liquid storage container, the air outlet of the first negative pressure device is communicated to the liquid storage container, the on-off component is arranged corresponding to the liquid inlet pipeline, the on-off component has a first state of blocking the liquid inlet pipeline and a second state of communicating the liquid inlet pipeline, wherein the on-off component is switched to the first state, the first negative pressure device sucks the air of the liquid storage container to make the negative pressure in the liquid storage container reach a set threshold value, under the condition that the negative pressure in the liquid storage container remains at the set threshold value, the on-off component is switched to the second state, and the negative pressure of the liquid storage container makes the external liquid enter the liquid storage container through the liquid inlet pipeline.

[0005] In an embodiment of the liquid pumping system of the utility model, the on-off component comprises a pipeline on-off valve, the pipeline on-off valve comprises a valve body and a valve core, the valve core has a pressing state and an open state, when the valve core is in the pressing state, the on-off component is in the first state, and when the valve core is in the open state, the on-off component is in the second state.

[0006] In the embodiment of the liquid pumping system, the pipeline on-off valve is a pneumatic pinch valve, the liquid pumping system further comprises a second negative pressure device, an exhaust port of the second negative pressure device is in communication with an air inlet of the pneumatic pinch valve, and gas discharged by the second negative pressure device drives the valve core to the extrusion state.

[0007] In the embodiment of the liquid pumping system, the pipeline on-off valve is a pneumatic pinch valve, the air inlet of the pneumatic pinch valve is in communication with the exhaust port of the first negative pressure device, and at least part of the gas discharged by the first negative pressure device drives the valve core to the extrusion state.

[0008] In the embodiment of the liquid pumping system, the on-off assembly further comprises a control valve, the control valve comprises an air inlet valve port, a first air outlet valve port and a second air outlet valve port, the exhaust port of the first negative pressure device is in communication with the air inlet valve port, the first air outlet valve port is in communication with the air inlet of the pneumatic pinch valve, and the second air outlet valve port is in communication with the atmosphere.

[0009] In the embodiment of the liquid pumping system, the control valve is a two-position three-way electromagnetic valve.

[0010] In the embodiment of the liquid pumping system, the on-off assembly further comprises a pressure limiting valve, the pressure limiting valve comprises a gas inlet and a gas outlet, the gas inlet is in communication with the air outlet of the pneumatic pinch valve, and the gas outlet is in communication with the atmosphere.

[0011] In the embodiment of the liquid pumping system, the on-off assembly further comprises a gas release valve, the gas release valve comprises an air inlet and an air outlet, the air inlet is in communication with the air outlet of the pneumatic pinch valve, and the air outlet is in communication with the atmosphere.

[0012] In the embodiment of the liquid pumping system, the on-off assembly comprises a pipeline on-off valve, the pipeline on-off valve comprises a valve body and a valve core, the valve core is rotatably arranged in the valve body, the valve body has a valve body flow channel, the valve core has a valve core flow channel, when a non-valve core flow channel part of the valve core corresponds to the valve body flow channel, the on-off assembly is in a first state, and when the valve core flow channel of the valve core corresponds to the valve body flow channel, the on-off assembly is in a second state.

[0013] In the embodiment of the liquid pumping system, the pipeline on-off valve is an electric ball valve.

[0014] In the liquid pumping system, the on-off assembly comprises a pipeline on-off valve, the pipeline on-off valve comprises a valve body and a valve core, the valve core is movably arranged in the valve body, the valve body has a valve body flow channel, and the valve core has a first position and a second position.

[0015] In the liquid pumping system, the pipeline on-off valve is any one of a butterfly valve, a gate valve and an electromagnetic pinch valve.

[0016] In the liquid pumping system, the liquid inlet pipeline comprises a rigid pipe section and a flexible pipe section, and the flexible pipe section passes through the valve core of the pneumatic pinch valve.

[0017] In the liquid pumping system, the pipeline on-off valve is an electromagnetic pinch valve, the liquid inlet pipeline comprises a rigid pipe section and a flexible pipe section, and the flexible pipe section passes through the moving path of the valve core of the electromagnetic pinch valve.

[0018] In the liquid pumping system, the liquid inlet pipeline comprises a straight pipe section extending along a straight line, and the on-off assembly is arranged corresponding to the straight pipe section of the liquid inlet pipeline.

[0019] In the liquid pumping system, the straight pipe section comprises a first straight pipe section and a second straight pipe section, an interface at one end of the on-off assembly is connected to the first straight pipe section, and an interface at the other end of the on-off assembly is connected to the second straight pipe section.

[0020] In the liquid pumping system, the time for the on-off assembly to switch from the first state to the second state is between 0.3s and 1s.

[0021] In the liquid pumping system, the liquid pumping system further comprises a pressure relief valve, the pressure relief valve is arranged in the liquid storage container, when the negative pressure value in the liquid storage container is greater than the set threshold value, the pressure relief valve is opened to enable the inner cavity of the liquid storage container to be in communication with the external air, and when the negative pressure value in the liquid storage container is less than or equal to the set threshold value, the pressure relief valve is closed to seal the liquid storage container.

[0022] In the liquid pumping system, the pressure relief valve comprises a pressure relief cavity, a plugging plate and an elastic member, one end of the pressure relief cavity is in communication with the inner cavity of the liquid storage container, the other end is provided with a pressure relief opening in communication with the external atmosphere, one end of the elastic member is mounted on the wall of the pressure relief cavity, and the other end tightly seals the plugging plate on the pressure relief opening.

[0023] In the liquid pumping system, the wall of the pressure relief cavity is provided with a guide rod, and the plugging plate is in sliding cooperation with the guide rod.

[0024] In the liquid pumping system, one side of the plugging plate facing the guide rod is provided with a sliding block, one side of the sliding block facing the guide rod is provided with a sliding groove, and the end of the guide rod is in sliding cooperation in the sliding groove.

[0025] In the liquid pumping system, one side of the plugging plate facing the guide rod is provided with a sliding block, one side of the sliding block facing the guide rod is provided with a sliding groove, and the end of the guide rod is in sliding cooperation in the sliding groove.

[0026] The utility model also provides a kind of cleaning base station, and the cleaning base station includes base station main body and the liquid pumping system of any above, the bottom of the base station main body is provided with cleaning tank, and the liquid pumping system is located in the base station main body, and the liquid inlet pipeline is connected with the cleaning tank in communication with one end of the liquid storage container.

[0027] In the cleaning base station, the cleaning base station further includes a liquid level detection device, the liquid level detection device includes a detection element and a sensing element, the detection element is used to sense the position of the sensing element, the sensing element is movably arranged in the liquid storage container and rises with the rising of the liquid level in the liquid storage container, or continues to rise with the rising of the liquid level after the liquid level height in the liquid storage container reaches a preset height.

[0028] In the cleaning base station, the sensing element has a rotating end and a sensing end, the rotating end is rotatably connected in the liquid storage container, and the sensing end rotates around the rotation axis of the rotating end to form movement in the height direction.

[0029] In the cleaning base station, the detection element includes a magnetic element and a Hall sensor, the magnetic element is arranged on the sensing end, and the Hall sensor is arranged in the base station main body and corresponds to the magnetic element.

[0030] In the cleaning base station, the sensing element has a highest sensing position, the highest sensing position is the highest liquid level height that can be sensed by the sensing element, the liquid storage container has a highest capacity surface, the highest capacity surface is the liquid level height corresponding to the most liquid that can be stored by the liquid storage container without liquid overflow, and the volume between the highest sensing position and the highest capacity surface is greater than or equal to the volume of the cleaning tank.

[0031] In the utility model cleaning base station one embodiment, the highest inductive position and the highest volume between the volume is greater than or equal to the cleaning base station single time to the cleaning assembly is washed when, the liquid volume generated in the washing tank.

[0032] In the utility model cleaning base station one embodiment, the cleaning base station still includes sewer pipeline, one end of the sewer pipeline is linked with the liquid storage container, another end is free end, and the sewer pipeline is equipped with valve part.

[0033] The utility model also provides a kind of cleaning system, the cleaning system includes self-moving cleaning equipment and the cleaning base station of any one described above.

[0034] The liquid pumping system can realize the cutting of the liquid inlet pipeline by setting the on-off assembly corresponding to the liquid inlet pipeline, so that a closed space is formed inside the liquid storage container. Under the action of the first negative pressure device, a larger negative pressure can be formed in the liquid storage container, thereby compared with the pumping operation mode of pumping air and sucking sewage at the same time, the number of pumping can be reduced, and the negative pressure threshold in the liquid storage container can be set by the volume of the washing tank, so that all the sewage in the washing tank can be pumped into the liquid storage container at one time. The sewage pumping speed can be effectively improved, and the time required for pumping sewage can be reduced. Because the number of pumping is reduced, the number of gas and sewage combination is reduced, and the bubble sound can be reduced. In addition, compared with the pumping operation mode of pumping air and sucking sewage at the same time, the cleaning base station of the utility model can obtain greater pumping force, can increase the carrying rate of impurities deposited in the washing tank, can reduce the deposition of dirt at the bottom of the washing tank, and is conducive to realizing the thorough maintenance-free of the washing tank. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other embodiments can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0036] Figure 1 It is a three-dimensional schematic view of the utility model cleaning base station one embodiment;

[0037] Figure 2 It is a view of the utility model cleaning base station one embodiment exposing the internal structure by removing part of the shell;

[0038] Figure 3 It is a structural schematic view of the liquid storage container in the utility model cleaning base station one embodiment;

[0039] Figure 4Structure schematic view of the cleaning base station in another embodiment of the present utility model after the box cover of the liquid storage container is removed;

[0040] Figure 5 Partial sectional view of the pressure relief valve part in an embodiment of the cleaning base station of the present utility model;

[0041] Figure 6 Three-dimensional view of the pressure relief cavity in an embodiment of the cleaning base station of the present utility model;

[0042] Figure 7 Waterway and gasway connection schematic view in an embodiment of the cleaning base station of the present utility model;

[0043] Figure 8 Waterway and gasway connection schematic view in another embodiment of the cleaning base station of the present utility model;

[0044] Figure 9 Waterway and gasway connection schematic view in still another embodiment of the cleaning base station of the present utility model;

[0045] Figure 10 Waterway and gasway connection schematic view in still another embodiment of the cleaning base station of the present utility model;

[0046] Figure 11 Waterway and gasway connection schematic view in still another embodiment of the cleaning base station of the present utility model;

[0047] Figure 12 Installation schematic view of the liquid level detection device in the liquid storage container in still another embodiment of the cleaning base station of the present utility model.

[0048] Element number explanation:

[0049] 10、cleaning base station; 100、base station main body; 110、accommodation cavity; 120、cleaning tank; 300、liquid pumping system; 310、liquid storage container; 314、box body; 311、waste water joint; 312、air pumping hole; 313、liquid level detection device; 3131、sensing part; 3132、rotating end; 3133、sensing end; 3134、magnetic part; 320、box cover; 321、pressure relief cavity; 322、first through hole; 330、pressure relief valve; 331、pressure relief cover; 332、sealing part; 333、blocking plate; 334、elastic part; 335、pressure relief opening; 336、shutter; 3361、second through hole; 337、sliding block; 338、guide rod; 339、sliding groove; 400、first negative pressure device; 500、liquid inlet pipeline; 510、straight pipe section; 511、first straight pipe section; 512、second straight pipe section; 513、flexible pipe section; 600、on-off assembly; 610、valve body; 611、first interface; 620、control unit; 621、gas release valve; 6211、gas inlet interface; 6212、gas outlet interface; 622、pipe joint; 623、pressure limiting valve; 6231、gas inlet; 6232、gas outlet; 624、control valve; 6241、gas inlet valve; 6242、first gas outlet valve; 6243、second gas outlet valve; 625、second negative pressure device; 700、controller. DETAILED DESCRIPTION

[0050] The above and other advantages and effects of the present application will become readily apparent to those of ordinary skill in the art from the following description thereof, taken in conjunction with the accompanying drawings. The present application can be carried out by means of the structures and combinations thereof particularly pointed out in the description and accompanying drawings. As will be realized, the application is capable of modifications in various obvious aspects, all without departing from the spirit and scope of the application. Accordingly, the specification is to be regarded as merely illustrative of the preferred embodiments and equivalent methods and structures. The following examples are given to further illustrate the application. However, the examples should not be construed as limiting the application in any way.

[0051] When the embodiments give numerical ranges, it is to be understood that every numerical range recited is intended to include both the endpoints and any number subsumed therebetween. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains and the meaning is consistent with the use of such terms in the pertinent art. Any methods, devices, and materials similar or equivalent to those described herein can be used in the practice of the application.

[0052] It is to be understood that the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in the specification are only for the convenience of clear description, and are not intended to limit the scope of the utility model that can be implemented. The change or adjustment of the relative relationship is also considered as the scope of the utility model that can be implemented without substantial change of the technical content.

[0053] Please refer to Figures 1 to 12 , the utility model provides a kind of liquid pumping system 300 and the cleaning base station 10 comprising the liquid pumping system 300, cleaning system, the liquid pumping system 300 not only can be applied to cleaning base station 10, for the sewage in washing tank 120 is pumped and stored, it can also be used in any suitable liquid pumping equipment, for example: fish tank water changing device, dishwasher, cleaning base station 10 etc. need to carry out liquid pumping operation equipment. But for the convenience of explanation, the following cleaning base station 10 is taken as an example to explain.

[0054] Please refer to Figure 1 And Figure 2 , the utility model cleaning base station 10 includes: base station main body 100, washing tank 120 and liquid pumping system 300. The appearance of base station main body 100 is not limited, for example, it can be generally cuboid shape, it can be cuboid shape in lower part, and it can be spherical shape in top part, but it is not limited to this, considering the demand of indoor arrangement, it is best to be beautiful and small in size. Base station main body 100 usually includes accommodating cavity 110, accommodating cavity 110 is arranged at the bottom of base station main body 100, and has opening for cleaning equipment to enter, and charging terminal for charging cleaning equipment is usually arranged in accommodating cavity 110 and can be electrically connected with charging equipment. But it needs to be explained that if not considering charging, the charging terminal can not be arranged on the base station main body 100 of the utility model.

[0055] Please refer to Figure 1 And Figure 2 , washing tank 120 is arranged at the bottom of base station main body 100 and is used for washing cleaning assembly of cleaning equipment. The structure and shape of washing tank 120 can be square, circular or irregular, but it is not limited to this, and it is best to at least partially accommodate cleaning assembly of cleaning equipment in height direction and clean cleaning assembly. In the process of washing cleaning assembly of cleaning equipment, sewage is collected and stored to prevent sewage from flowing out and polluting indoor floor.

[0056] Please refer to Figure 4 And Figure 7The liquid pumping system 300 comprises a liquid storage container 310, a liquid inlet pipeline 500, a first negative pressure device 400 and an on-off assembly 600. The shape and structure of the liquid storage container 310 are not limited, and the liquid storage container 310 should have enough strength to prevent deformation when the negative pressure reaches a set threshold. One end of the liquid inlet pipeline 500 is connected to the top of the liquid storage container 310, and the other end of the liquid inlet pipeline 500 is connected to the liquid to be pumped, such as sewage in the cleaning tank 120. The air outlet of the first negative pressure device 400 is connected to the liquid storage container 310. The first negative pressure device 400 can be any suitable device that can pump gas, such as a vacuum pump, a centrifugal blower, an axial flow blower, a plunger pump, etc., but is not limited thereto. The connection between the air outlet of the first negative pressure device 400 and the liquid storage container 310 is not limited, for example, a hole 312 can be formed on the wall above the highest liquid level of the liquid storage container 310, and the air outlet of the first negative pressure device 400 can be directly connected to the hole 312, or the air outlet of the first negative pressure device 400 can be indirectly connected to the hole 312 through a pipeline. The on-off assembly 600 is arranged corresponding to the liquid inlet pipeline 500, and the on-off assembly 600 has a first state in which the liquid inlet pipeline 500 is blocked and a second state in which the liquid inlet pipeline 500 is connected. When the on-off assembly 600 is switched to the first state, the first negative pressure device 400 pumps air to the liquid storage container 310 to make the negative pressure in the liquid storage container 310 reach a set threshold. When the negative pressure in the liquid storage container 310 remains at the set threshold, the on-off assembly 600 is switched to the second state, and the sewage in the cleaning tank 120 is pumped into the liquid storage container 310 from the liquid inlet pipeline 500 under the action of the negative pressure in the liquid storage container 310. It should be noted that the set threshold can be obtained by comprehensive calculation according to the volume of the liquid to be pumped, the diameter of the liquid inlet pipeline 500 and the pumping distance, or can be obtained by experiment. Considering the diameter of the liquid inlet pipeline 500 of the existing cleaning base station 10, the distance from the liquid storage container 310 to the cleaning tank 120 and the volume of the cleaning tank 120, the set threshold in this embodiment is 30 Kpa. In addition, it should be noted that considering the existence of errors, slight fluctuations above and below the set threshold are also "maintained", and the slight fluctuations refer to ±10 Kpa.

[0057] Please refer to Figures 2 to 4In the liquid pumping system 300 of the utility model, the liquid storage container 310 is arranged on the base station main body 100, and the arrangement position can be set according to the requirement, so as to facilitate the dumping of sewage or the removal of the liquid storage container 310. In the cleaning base station 10 of the utility model, the liquid storage container 310 is detachably arranged on the upper portion of the base station main body 100. The shape and structure of the liquid storage container 310 are not limited, so as to facilitate the manufacture, and the liquid storage container 310 has sufficient strength and does not deform when the negative pressure reaches the set threshold value. One end of the liquid inlet pipeline 500 is communicated to the liquid storage container 310, and the other end of the liquid inlet pipeline 500 is communicated to the cleaning tank 120. The structure of the liquid storage container 310 in the liquid pumping system 300 of the utility model is not limited. Considering that the main function of the liquid storage container 310 on the cleaning base station 10 is to collect the sewage in the cleaning tank 120, and in order to dump the sewage and facilitate the cleaning, the liquid storage container 310 on the cleaning base station 10 mainly comprises a box body 314 and a box cover 320 which is sealingly arranged on the box body 314. As long as the box cover 320 can reliably seal the sewage cavity in the box body 314, the mounting mode of the box cover 320 on the box body 314 is not limited. For example, the box cover 320 can be completely separated from the box body 314 and is buckled with the box body 314 through a plurality of buckle assemblies. Alternatively, one side of the box cover 320 is rotatably connected to the box body 314, and the other side is buckled with the box body 314 through a buckle assembly.

[0058] As long as the liquid inlet pipeline 500 can be switched between the first state and the second state, the type of the on-off assembly 600 in the utility model can not be limited. For example, the on-off assembly 600 can be any one or more of a manual valve, an electric valve, an electromagnetic valve, a pneumatic pinch valve and a hydraulic pinch valve, but is not limited thereto. The on-off assembly 600 is arranged on the liquid inlet pipeline 500 and / or the corresponding machine body, such as the base station main body 100. The specific mounting form of the on-off assembly 600 on the liquid inlet pipeline 500 and / or the base station main body 100 is determined comprehensively according to the type of the liquid inlet pipeline 500 and the type of the on-off assembly 600. In the liquid pumping system 300 of the utility model, the on-off assembly 600 comprises a pipeline on-off valve. The pipeline on-off valve comprises a valve body 610 and a valve core (not shown). The valve body 610 is arranged on the liquid inlet pipeline 500 and / or the corresponding base station main body 100. The valve core is connected with the valve body 610 and has a pressing state and an open state. When the valve core is in the pressing state, the on-off assembly 600 is in the first state, and at this time, the liquid inlet pipeline 500 is closed. When the valve core is in the open state, the on-off assembly 600 is in the second state, and at this time, the liquid inlet pipeline 500 is communicated with the liquid storage container 310.

[0059] Please refer to Figure 2 , Figure 9In the liquid pumping system 300 of the embodiment, the pipeline on-off valve is a pneumatic pinch valve, the air inlet of the pneumatic pinch valve is communicated with the air outlet of the first negative pressure device 400, at least part of the gas discharged by the first negative pressure device 400 drives the valve core to the extrusion state, and drives the pneumatic pinch valve to clamp and block the liquid inlet pipeline 500. In this way, the pneumatic pinch valve can be driven while the first negative pressure device 400 pumps the liquid container 310, and the liquid inlet pipeline 500 can be cut off and communicated. The pneumatic pinch valve is directly driven by the first negative pressure device 400, so that the system design is simplified, and the manufacturing and maintenance costs are reduced.

[0060] Please refer to Figure 11 In the liquid pumping system 300 of the embodiment, the pipeline on-off valve is a pneumatic pinch valve, the liquid pumping system 300 further comprises a second negative pressure device 625, the air outlet of the second negative pressure device 625 is communicated with the air inlet of the pneumatic pinch valve, and the gas discharged by the second negative pressure device 625 drives the valve core to the extrusion state. By arranging the second negative pressure device 625 for supplying air to the pneumatic pinch valve independently, the opening and closing of the pneumatic pinch valve is not affected by the action of the first negative pressure device 400, and the pneumatic pinch valve can be turned off before the first negative pressure device 400 pumps the liquid container 310, so that the formation speed of the negative pressure in the liquid container 310 is accelerated.

[0061] Please refer to Figure 9 In the liquid pumping system 300 of the embodiment, the on-off assembly 600 further comprises a control valve 624, and the control valve 624 is a two-position three-way electromagnetic valve. The control valve 624 comprises an air inlet valve port 6241, a first air outlet valve port 6242 and a second air outlet valve port 6243, the air outlet of the first negative pressure device 400 is communicated with the air inlet valve port 6241, the first air outlet valve port 6242 is communicated with the air inlet of the pneumatic pinch valve, and the second air outlet valve port 6243 is communicated with the atmosphere. It should be noted that those skilled in the art can understand that the structure of the control valve 624 can also be other valve structures with the same function as the two-position three-way electromagnetic valve.

[0062] Please refer to Figure 2 , Figure 9 , Figure 10 In the liquid pumping system 300 of the embodiment, the on-off assembly 600 further comprises a pressure limiting valve 623, and the pressure limiting valve 623 comprises a gas inlet 6231 and a gas outlet 6232, the gas inlet 6231 is communicated with the air outlet of the pneumatic pinch valve, and the gas outlet 6232 is communicated with the atmosphere. The types of the pressure limiting valve 623 include but are not limited to safety valves, pressure reducing valves, overflow valves and the like, and the pressure limiting valve 623 can prevent the pressure in the pneumatic pinch valve from exceeding the designed bearing capacity and causing explosion or rupture, thereby effectively protecting the pneumatic pinch valve.

[0063] Referring to Figure 2 and Figures 9 to 11 In an embodiment of the liquid pumping system 300, the on-off assembly 600 further comprises a gas release valve 621, the gas release valve 621 comprising an air inlet interface 6211 and an air outlet interface 6212, the air inlet interface 6211 being in communication with the air outlet of the pneumatic pinch valve, and the air outlet interface 6212 being in communication with the atmosphere. The gas release valve 621 can quickly discharge the gas in the pneumatic pinch valve, thereby improving the opening speed of the pneumatic pinch valve.

[0064] In another embodiment of the liquid pumping system 300, the on-off assembly 600 comprises a pipeline on-off valve, the pipeline on-off valve comprising a valve body 610 and a valve core (not shown), the valve body 610 being mounted on the liquid inlet pipeline 500 and / or the corresponding base body 100, the valve core being rotatably arranged in the valve body 610, the valve body 610 having a valve body flow channel, and the valve core having a valve core flow channel, when the non-valve core flow channel part of the valve core corresponds to the valve body flow channel, the on-off assembly 600 is in a first state, and when the valve core flow channel of the valve core corresponds to the valve body flow channel, the on-off assembly 600 is in a second state. This kind of pipeline on-off valve can realize the cutting and opening of the liquid inlet pipeline 500 through the rotation of the valve core, which is good in operability and easy to further adopt electric control. Preferably, in an embodiment of the liquid pumping system 300, the pipeline on-off valve is an electric ball valve. The electric ball valve is a valve that can be opened and closed by rotating the ball driven by an electric actuator, which is low in cost and high in reliability.

[0065] In one embodiment of the liquid extraction system 300 of this utility model, the on / off component 600 includes a pipeline on / off valve, which includes a valve body 610 and a valve core (not shown). The valve body 610 is installed on the liquid inlet pipeline 500 and / or the corresponding base station body 100. The valve core is movably disposed within the valve body 610. The valve body 610 has a valve body flow channel. The valve core has a first position and a second position. When the valve core is in the first position, the on / off component 600 is in a first state; when the valve core is in the second position, the on / off component 600 is in a second state. In this scheme, the on / off component 600 is switched between the first and second states by the movement of the valve core relative to the valve body 610. It can have a small displacement on the cutting-off path and has a high response speed. The pipeline on / off valve is any one of a butterfly valve, a gate valve, or a solenoid clamp valve. Butterfly valves are simple to open and close and have low fluid resistance. The gate valve moves perpendicular to the medium flow direction, making opening and closing less strenuous. The inlet pipe 500 has a flexible pipe section 513. The valve core of the electromagnetic pinch valve clamps and releases the flexible pipe by moving between a first position and a second position, thereby opening and closing the inlet pipe 500. Compared with other types of electromagnetic valves, the liquid does not come into contact with the valve core of the electromagnetic pinch valve, resulting in a longer service life.

[0066] The type of liquid inlet pipe 500 in this utility model can be selected according to the type of on / off component 600. Preferably, in one embodiment of the liquid extraction system 300 of this utility model, the on / off component 600 includes a valve body 610 and a valve core. The valve body 610 is installed on the liquid inlet pipe 500 and / or the corresponding base station body 100. The valve core is connected to the valve body 610 and has a squeezed state and an open state. The liquid inlet pipe 500 includes a rigid pipe section and a flexible pipe section 513. The connection method between the rigid pipe section and the flexible pipe section 513 is not limited, as long as a reliable sealing connection is met. The rigid pipe section is located in the area outside the valve core of the pneumatic clamp valve, and the flexible pipe section 513 passes through the valve core of the pneumatic clamp valve. When the valve core is in a compressed state, it compresses the flexible tube segment 513, putting the on / off assembly 600 in a first state, at which point the inlet pipe 500 is closed. When the valve core is in an open state, it releases the compression of the flexible tube segment 513, and the on / off assembly 600 is in a second state, at which point the inlet pipe 500 is connected to the storage container 310. By providing the flexible tube segment 513 and clamping it with the valve core, wastewater is prevented from passing through the internal flow channel of the valve core, thus avoiding corrosion and damage to the valve core and increasing the service life of the on / off assembly 600. In other embodiments, the inlet pipe 500 is divided into two sections. One end of one section is connected to the inlet of the pneumatic pinch valve, and the other end is connected to the outlet of the pneumatic pinch valve. The on / off and on / off states of the pneumatic pinch valve's valve core are used to control the inlet pipe.

[0067] In the embodiment of the liquid pumping system 300, the on-off assembly 600 comprises a pipeline on-off valve, the pipeline on-off valve is an electromagnetic pinch valve, the liquid inlet pipeline 500 comprises a rigid pipe section and a flexible pipe section 513, the flexible pipe section 513 passes through the moving path of the valve core of the electromagnetic pinch valve. The valve core of the electromagnetic pinch valve is pressed or released during the movement process, so as to realize the closing or opening of the liquid inlet pipeline 500.

[0068] Please refer to Figures 7 to 11 In the embodiment of the liquid pumping system 300, the liquid inlet pipeline 500 comprises a straight pipe section 510 extending along a straight line, and the on-off assembly 600 is arranged corresponding to the straight pipe section 510 of the liquid inlet pipeline 500. By arranging the on-off assembly 600 on the straight pipe section 510, the sewage pumping efficiency and system stability are improved, the residue of the sewage at the position of the on-off assembly 600 is reduced, and the pressure loss is reduced, so that the operation of the entire cleaning base station 10 is more efficient, reliable and economical.

[0069] In the liquid pumping system 300, the straight pipe section 510 can be an integral section or can be connected by multiple pipe sections, and the specific arrangement is determined according to the structure and mounting mode of the on-off assembly 600. Please refer to Figure 7 In the embodiment of the liquid pumping system 300, the liquid inlet pipeline 500 comprises a first straight pipe section 511 and a second straight pipe section 512, an interface at one end of the on-off assembly 600 is connected to the first straight pipe section 511, and an interface at the other end of the on-off assembly 600 is connected to the second straight pipe section 512. In the second state, the on-off assembly 600 comprises a flow channel extending along a straight line, one end of the flow channel is connected to the first straight pipe section 511, and the other end of the flow channel is connected to the second straight pipe section 512, the first straight pipe section 511, the flow channel and the second straight pipe section 512 are connected to each other to form a sewage channel extending along a vertical straight line. Such an arrangement can reduce the resistance of the valve body 610, reduce the energy loss of the sewage passing through the valve body 610 during the pumping process, and prevent the sewage from being blocked at the flow channel position of the valve body 610.

[0070] In an embodiment of the liquid pumping system 300, the opening time of the on-off assembly 600 in the utility model is not limited too much, but considering that the opening speed of the on-off assembly 600 has an important influence on the effect of pumping and collecting dirt, too slow opening speed of the on-off assembly 600 will lead to insufficient pressure at the beginning of pumping, and the dirt in the cleaning tank 120 cannot be completely pumped out, and it may also cause blockage of the liquid inlet pipeline 500. Preferably, in an embodiment of the cleaning base station 10, the time for the on-off assembly 600 to switch from the first state to the second state is between 0.3s and 1s. Under this opening time limit, it can be ensured that the flow channel of the on-off assembly 600 has sufficient negative pressure suction force when it is completely opened, and a better dirt pumping effect can be obtained.

[0071] Please refer to Figures 3 to 6 In an embodiment of the liquid pumping system 300, the liquid pumping system 300 further comprises a pressure relief valve 330, the pressure relief valve 330 is arranged in the liquid storage container 310, when the negative pressure value in the liquid storage container 310 is greater than the set threshold value, the pressure relief valve 330 is opened to make the inner cavity of the liquid storage container 310 communicate with the outside air, when the negative pressure value in the liquid storage container 310 is less than or equal to the set threshold value, the pressure relief valve 330 is closed to seal the liquid storage container 310. The structure of the pressure relief valve 330 and the mounting method on the liquid storage container 310 are not limited, for example, it can be installed on the box body 314 and located above the highest liquid level, or it can be installed on the box cover 320, when the negative pressure in the liquid storage container 310 is less than the set threshold value, the pressure relief valve 330 is opened to allow air to enter the liquid storage container 310. By arranging the pressure relief valve 330, when the vacuum degree in the liquid storage container 310 is too high, air can be supplemented automatically, which not only can maintain the negative pressure in the liquid storage container 310 at the set threshold value, but also can effectively prevent the damage of the liquid storage container 310.

[0072] Please refer to Figures 3 to 6 The pressure relief valve 330 in the utility model can also refer to the existing gas pressure limiting valve structure, and can be obtained through general commercial means, preferably, please refer to Figures 5 to 6In the liquid pumping system 300 of the embodiment, the pressure relief valve 330 comprises a pressure relief cavity 321, a pressure relief cover 331, a blocking plate 333 and an elastic member 334. One end of the pressure relief cavity 321 is in communication with the inner cavity of the liquid storage container 310, and the other end is provided with a pressure relief port 335 in communication with the external atmosphere. One end of the elastic member 334 is mounted on the wall of the pressure relief cavity 321, and the other end tightly seals the blocking plate 333 on the pressure relief port 335. The shape of the pressure relief cavity 321 is not limited, and can be a cuboid, a cylinder or an irregular body. In this embodiment, the pressure relief cavity 321 is a cylindrical cavity, and the bottom wall of the pressure relief cavity 321 is provided with a first through hole 322. The pressure relief cavity 321 is in communication with the inner cavity of the liquid storage container 310 through the first through hole 322. The pressure relief cover 331 covers the pressure relief cavity 321, and the pressure relief port 335 is formed in the pressure relief cover 331. A shielding plate 336 is arranged on the pressure relief port 335 to prevent dust from blocking the pressure relief port 335. A second through hole 3361 is formed in the shielding plate 336, and the pressure relief port 335 is in communication with the external atmosphere through the second through hole 3361. In the present application, the elastic member 334 can be any suitable structure that can provide a force to seal the blocking plate 333 on the pressure relief port 335, such as a bent elastic spring piece, a spring, etc. However, the elastic member 334 is preferably a spring in this embodiment. The lower end of the elastic member 334 is mounted on the wall of the pressure relief cavity 321, and the upper end of the elastic member 334 tightly seals the blocking plate 333 on the pressure relief cover 331 and blocks the pressure relief port 335. The blocking plate 333 is tightly sealed against the pressure relief cover 331. Under the action of the elastic member 334, the blocking plate 333 is tightly sealed against the pressure relief cover 331 and blocks the pressure relief port 335. The elastic force of the elastic member 334 that tightly seals the blocking plate 333 against the pressure relief cover 331 is determined according to the maximum value of the set threshold of the liquid storage container 310. When the negative pressure in the liquid storage container 310 is greater than the maximum value of the set threshold, the external air pressure causes the elastic member 334 to be further compressed, the pressure relief port 335 is opened, and air is allowed to enter. When the negative pressure in the liquid storage container 310 is less than or equal to the maximum value of the set threshold, the blocking plate 333 is tightly sealed against the pressure relief cover 331 under the action of the elastic force of the elastic member 334. In this scheme, the pressure relief control of the pressure relief valve 330 is realized by the elastic member 334, without the need for additional electrical control connection, which is relatively safe and low in cost, and also facilitates the opening or removal of the box cover 320.

[0073] Please refer to Figures 3 to 6, although the utility model pressure relief valve 330, elastic piece 334 has greater rigidity, also can provide mobile limit for plugging plate 333, but considering the stability of plugging plate 333 in the moving process, preferably, in the utility model liquid pumping system 300 an embodiment, the wall of the pressure relief chamber 321 is equipped with guide rod 338, plugging plate 333 and the sliding fit between guide rod 338. Through the sliding fit between plugging plate 333 and guide rod 338, the relatively stable installation of plugging plate 333 in pressure relief chamber 321 can be realized, and plugging plate 333 will not be offset during the sliding process, which improves the sealing reliability of plugging plate 333.

[0074] Please refer to Figures 3 to 6 In the utility model, the sliding fit mode between plugging plate 333 and guide rod 338 has multiple, in the utility model liquid pumping system 300 an embodiment, the one side of plugging plate 333 towards guide rod 338 is equipped with sliding block 337, the one side of sliding block 337 towards guide rod 338 is equipped with sliding groove 339, and the end of guide rod 338 slides in sliding groove 339. In other embodiments, the one side of plugging plate 333 towards guide rod 338 can be equipped with sliding block 337, the one side of guide rod 338 towards plugging plate 333 is equipped with sliding groove 339, and sliding block 337 slides in sliding groove 339. The root of guide rod 338 is provided with a circular truncated cone matched with spring inner hole, one end of the spring is sleeved on sliding block 337, and the other end is sleeved on the circular truncated cone of the root of guide rod 338.

[0075] Please refer to Figures 3 to 6 In the utility model, although sealing element 332 can not be provided and only the material selection of plugging plate 333 is used to realize the sealing between plugging plate 333 and pressure relief port 335, preferably, in the utility model liquid pumping system 300 an embodiment, the one side of plugging plate 333 away from elastic piece 334 is equipped with sealing element 332, and the projection of pressure relief port 335 on plugging plate 333 is located in the area formed by sealing element 332. This kind of setting method can form an end face sealing structure with pre-tightening pressure between plugging plate 333, sealing element 332 and pressure relief cover 331 when plugging plate 333 abuts against the edge of pressure relief port 335, which has better sealing effect compared with the radial sealing mode.

[0076] Please refer to Figures 1 to 2The utility model still provides a kind of cleaning base station 10, the cleaning base station 10 includes base station main body 100 and the liquid pumping system 300 of any above described, the cleaning tank 120 is located at the bottom of the base station main body 100, to clean the cleaning component of cleaning equipment, the liquid pumping system 300 is located in the base station main body 100, the liquid inlet pipeline 500 is connected with the cleaning tank 120 at the end far from the liquid storage container 310.

[0077] It should be noted that, in the cleaning base station 10, if the on-off component 600 is not provided, in the state that the liquid inlet pipeline 500 is not closed, when the air pumping operation is performed on the liquid storage container 310, as long as the negative pressure reaches the pressure that can suck part of sewage into the liquid storage container 310, the sewage will enter the liquid storage container 310 along the liquid inlet pipeline 500 by itself, at this time, the pressure in the liquid storage container 310 will rise, until the negative pressure in the liquid storage container 310 cannot meet the minimum suction force required for sewage pumping, at this time, the sewage pumping will be interrupted, when the air pumping operation continues and the negative pressure in the liquid storage container 310 meets the condition that part of the sewage can enter the liquid storage container 310 again, the sewage pumping operation will continue, and after repeated several times, the sewage in the cleaning tank 120 is pumped dry, in this process, the sewage will combine with air again every time the sewage pumping starts due to the interruption of the sewage pumping work, so the bubble sound is large, and the whole operation time is long in this intermittent way, and in the present application, the sewage pumping channel is closed, so a larger negative pressure can be accumulated.

[0078] In the liquid pumping system 300 of the cleaning base station 10, the on-off component 600 is arranged on the liquid inlet pipeline 500 between the liquid storage container 310 and the cleaning tank 120, so that the liquid storage container 310 and the cleaning tank 120 can be relatively isolated, so that a larger negative pressure can be formed in the liquid storage container 310 under the action of the first negative pressure device 400, and the sewage in the cleaning tank 120 can be pumped under the action of the negative pressure, compared with the pumping operation mode of pumping air and sewage at the same time, the number of pumping times can be reduced, and the negative pressure threshold in the liquid storage container 310 can be set by the volume of the cleaning tank 120, the diameter of the liquid inlet pipeline 500 and the distance from the liquid storage container 310 to the cleaning tank 120, so that all the sewage in the cleaning tank 120 can be pumped into the liquid storage container 310 at one time, which can effectively improve the sewage pumping speed and reduce the time required for pumping sewage. Further, because the number of pumping times is reduced, the number of times that gas combines with sewage is reduced, and the bubble sound can be reduced, in addition, compared with the pumping operation mode of pumping air and sewage at the same time, the present application can obtain a larger suction force, which can increase the carrying rate of impurities deposited in the cleaning tank 120, reduce the deposition of dirt at the bottom of the cleaning tank 120, and is conducive to realizing the thorough maintenance-free of the cleaning tank 120.

[0079] Please refer to Figure 4 andFigure 12 In one embodiment of the clean base station 10 of this utility model, the pumping system 300 further includes a liquid level detection device 313 for detecting the sewage level. The type of liquid level detection device 313 is not limited, including but not limited to magnetic level gauges, float level gauges, steel strip level gauges, radar level gauges, differential pressure level gauges, etc. In this embodiment, the liquid level detection device 313 is a Hall effect liquid level sensor. The Hall effect liquid level sensor includes a detection element and a sensing element 3131. The sensing element 3131 is movably disposed within the liquid storage container 310 and rises with the increase of the liquid level in the liquid storage container 310, or continues to rise with the increase of the liquid level after the liquid level in the liquid storage container 310 reaches a preset height. The Hall effect liquid level sensor has high accuracy and strong anti-interference capability.

[0080] In this invention, the installation method of the sensing element 3131 on the liquid storage container 310 is not limited, as long as it moves with the liquid level during the rise and is sensed by the detection element when it reaches the set position. Please refer to [link / reference]. Figure 12 In one embodiment of the clean base station 10 of this utility model, the sensing element 3131 has a rotating end 3132 and a sensing end 3133. The rotating end 3132 is rotatably connected inside the liquid storage container 310, and the sensing end 3133 rotates around the rotation axis of the rotating end 3132 to form a movement in the height direction. The detection element includes a magnetic element 3134 and a Hall sensor. The magnetic element 3134 is disposed in the sensing end 3133, and the Hall sensor is disposed inside the base station body 100 and corresponds to the magnetic element 3134. Since the Hall sensor itself does not directly contact the liquid, this greatly reduces the risk of corrosion of the sensor components by the liquid medium, thereby extending the service life of the level gauge.

[0081] In the utility model cleaning base station 10 one embodiment, the inductive piece 3131 has the highest induction position, the highest induction position is the highest liquid level that the inductive piece 3131 can sense, the liquid storage container 310 has the highest capacity surface, the highest capacity surface is the liquid level that the liquid storage container 310 can store the most liquid corresponding under the condition that liquid does not overflow, the volume between the highest induction position and the highest capacity surface is greater than or equal to the volume of the cleaning tank 120. In this way, in the process of pumping sewage, when the sensing end 3133 of the liquid level detection device 313 is about to reach the highest induction position without triggering, the sewage generated by single cleaning cleaning assembly in the cleaning tank 120 still needs to be pumped into the liquid storage container 310, and the volume between the highest induction position and the highest capacity surface is greater than or equal to the volume of the cleaning tank 120, which can ensure that the liquid storage container 310 still has enough space to accommodate the sewage generated by single cleaning cleaning assembly in the cleaning tank 120, avoiding sewage overflow from the liquid storage container 310. After the sewage enters the liquid storage container 310, the liquid level of the sewage is higher than the highest induction position of the sensing end 3133 of the liquid level detection device 313, and the liquid level detection device 313 executes signal feedback to perform full liquid alarm and remind the sewage pouring work after pumping sewage is completed.

[0082] In the utility model cleaning base station 10 one embodiment, the volume between the highest induction position and the highest capacity surface is greater than or equal to the liquid volume of the sewage generated in the cleaning tank 120 when the cleaning base station 10 performs cleaning work on the cleaning assembly for single time. It should be noted that single time includes the whole process from the beginning of cleaning assembly cleaning to the completion of cleaning assembly cleaning.

[0083] Although the utility model can also use the pouring mode to realize the discharge of the sewage in the liquid storage container 310, in the utility model cleaning base station 10 one embodiment, the cleaning base station 10 further includes a sewer line (not shown), one end of the sewer line is connected with the bottom of the liquid storage container 310, the other end of the sewer line is a free end, and a valve part (not shown) is arranged on the sewer line. When the liquid storage container 310 is full, the free end of the sewer line is inserted into the floor drain, the sewer line is opened by opening the valve part, and the sewage in the liquid storage container 310 is directly discharged into the floor drain. This setting mode reduces the burden of manual pouring, and also provides a good platform for automatic sewage discharge.

[0084] Considering that the sewage for cleaning the base station 10 has certain corrosive property, in an embodiment of the base station 10, the liquid inlet pipeline 500 is a rigid corrosion-resistant pipeline, the rigid corrosion-resistant pipeline is fixed on the base station main body 100, the on-off assembly 600 is an electric valve, the electric valve comprises a control unit 620 and a valve body 610, the valve body 610 is directly installed on the corrosion-resistant liquid inlet pipeline 500, the control unit 620 is rigidly connected with the valve body 610, and neither the control unit 620 nor the valve body 610 is connected with the base station main body 100. In another embodiment, the on-off assembly 600 can be only installed on the base station main body 100, or part of the assembly is installed on the base station main body 100 and part of the assembly is installed on the liquid inlet pipeline 500.

[0085] In the base station 10, the on-off assembly 600 can be a manual valve, which can not necessarily comprise the control unit 620, in order to facilitate the need for automatic control, please refer to Figures 7 to 11 In some embodiments of the base station 10, the on-off assembly 600 comprises the control unit 620 and the valve body 610, the valve body 610 is installed on the liquid inlet pipeline 500, the control unit 620 is installed on the liquid inlet pipeline 500 and / or the base station main body 100 and is electrically connected with the controller 700, so as to control the valve body 610 to open and block the liquid inlet pipeline 500. Such a setting can realize the automatic control of the on-off assembly 600, and can improve the operation efficiency and accuracy of the base station 10. Without manual control of the valve body 610, the possibility of human error is reduced.

[0086] Although the control of the valve body 610 can be realized by manually controlling the control unit 620, please refer to Figure 2 In an embodiment of the base station 10, the base station 10 further comprises a controller 700, the controller 700 is electrically connected with the control unit 620, and the control of the control unit 620 in the on-off assembly 600 can be automatically realized through the controller 700. Such a setting of the controller 700 can automatically adjust the valve according to a preset program or real-time feedback, realize intelligent control, which is of great significance to improve the intelligent level of the base station 10 and user experience. At the same time, the electrically connected controller 700 is convenient for integration with other automatic systems or monitoring systems of the base station 10, and provides convenience for expansion and upgrading of the system. It should be noted that the mode of the controller 700 for opening and closing control of the valve body 610 through the control unit 620 can be the conventional control mode in the automatic field, which will not be repeated here.

[0087] The arrangement mode of the liquid inlet pipeline 500 is not limited, and those skilled in the art can understand that, as long as the on-off assembly 600 is arranged on the liquid inlet pipeline 500, the liquid storage container 310 can be closed relative to the cleaning tank 120, the negative pressure of the set threshold value can be formed in the liquid storage container 310, and the suction force is greater than that of the original state in which the liquid storage container 310 is directly communicated with the cleaning tank 120 without arranging the on-off assembly 600, but in order to prevent dirt from remaining in the liquid inlet pipeline 500 and in order to reduce pressure loss, please refer to Figure 2 and Figure 9 In an embodiment of the cleaning base station 10 of the utility model, the liquid inlet pipeline 500 comprises a straight pipe section 510 extending along a straight line, and the valve body 610 is installed on the straight pipe section 510. By arranging the valve body 610 on the straight pipe section 510, the dirt remaining at the valve body 610 and the pressure loss are reduced, the operation of the whole cleaning base station 10 is more efficient, reliable and economical, and the dirt removal efficiency and system stability are improved.

[0088] Please refer to Figure 2 、 Figure 4 and Figure 9 In an embodiment of the cleaning base station 10 of the utility model, the liquid storage container 310 is arranged at the top of the base body 100, the straight pipe section 510 is arranged along the vertical direction, the upper end of the straight pipe section 510 is communicated with the sewage joint 311 in the liquid storage container 310, and the lower end of the straight pipe section 510 is communicated with the bottom of the cleaning tank 120. This arrangement mode can reduce the length of the inclined pipe section and the horizontal pipe section, and can prevent the dirt from being deposited on the inner wall of the liquid inlet pipeline 500 under the action of gravity to cause blockage.

[0089] In the utility model, the straight pipe section 510 can be an integral section or can be connected by multiple pipe sections, and the specific structure and installation mode of the valve body 610 are determined, please refer to Figure 7 In an embodiment of the cleaning base station 10 of the utility model, the liquid inlet pipeline 500 comprises a first straight pipe section 511 and a second straight pipe section 512, in the second state, the valve body 610 comprises a flow channel penetrating along a straight line, one end of the flow channel is connected with the first straight pipe section 511 in a way of interface, the other end of the flow channel is connected with the second straight pipe section 512 in a way of interface, and the first straight pipe section 511, the flow channel and the second straight pipe section 512 are connected with each other to form a sewage passage extending along a vertical straight line. This arrangement mode can reduce the resistance of the valve body 610 and the energy loss of the sewage passing through the valve body 610 in the suction process, and can prevent the dirt from being blocked at the flow channel position of the valve body 610.

[0090] The material of the first straight pipe section 511 and the second straight pipe section 512 can be set according to the installation requirement of the valve body 610, in an embodiment of the utility model cleaning base station 10, the first straight pipe section 511 and the second straight pipe section 512 are all rigid pipes, and the two ends of the on-off assembly 600 are respectively sealedly connected with the first straight pipe section 511 and the second straight pipe section 512 through quick plug joints. The form of the quick plug joint can refer to the common quick plug joint form in the hydraulic field, and can be obtained through general commercial means, and will not be repeated here. It should be noted that, if the quickness of connection is not considered, the first straight pipe section 511 and the second straight pipe section 512 can also be connected with the valve body 610 through other detachable connection modes such as flanges, and will not be exemplified one by one.

[0091] Please refer to Figures 8 to 11 In an embodiment of the utility model cleaning base station 10, the liquid inlet pipe 500 comprises a flexible pipe section 513, the valve body 610 of the on-off assembly 600 is a pipe clamp valve, the pipe clamp valve is installed on the flexible pipe section 513, the control unit 620 is installed on the liquid inlet pipe 500 and / or the base main body 100, and the control unit 620 controls the pipe clamp valve to clamp and block the flexible pipe section 513 in the first state and to release the flexible pipe section 513 in the second state. The pipe clamp valve can be any one of a pneumatic pipe clamp valve, a hydraulic pipe clamp valve, an electromagnetic pipe clamp valve and an electric pipe clamp valve, but is not limited thereto, as long as it can be installed on the flexible pipe section 513 and can clamp the flexible pipe section 513 to realize the interruption of the liquid inlet pipe 500. By setting the flexible pipe section 513 and clamping and blocking the flexible pipe section 513 through the pipe clamp valve, the sewage can not flow through the internal flow channel of the valve body 610, so that the corrosion and damage of the valve body 610 can be avoided, and the service life of the valve body 610 can be prolonged.

[0092] The material and specific size of the flexible pipe section 513 in the utility model are suitable for meeting the requirements of sewage extraction and facilitating the clamping and blocking of the pipe clamp valve, in an embodiment, the flexible pipe section 513 is a silica gel pipe, the hardness of the silica gel pipe is 60°-80°, for example, can be 60°, 70°, 80° or any value between 60° and 80°, the inner diameter is φ18mm-φ22mm, for example, can be φ18mm, φ20mm, φ22mm or any value between φ18mm and φ22mm, and the wall thickness is 1mm-2mm. The selection of such material and size range not only can make the flexible pipe section 513 have good corrosion resistance and aging resistance, but also can have good elasticity, so that the flexible pipe section 513 can be easily clamped under the action of the pipe clamp valve and can be elastically restored after the pipe clamp valve is released.

[0093] Please refer to Figure 9In the embodiment of the cleaning base station 10, the pinch valve is a pneumatic pinch valve, the pneumatic pinch valve comprises a first interface 611 for air intake and air exhaust, and the closing and opening of the pneumatic pinch valve are controlled by air intake and air exhaust of the first interface 611. The control unit 620 further comprises a pressure limiting valve 623, a control valve 624 and an air exhaust valve 621, and the controller 700 of the cleaning base station 10 is electrically connected with the control valve 624, the air exhaust valve 621 and the first negative pressure device 400 respectively, so as to control the opening and closing of the control valve 624, the air exhaust valve 621 and the first negative pressure device 400. The air inlet of the pressure limiting valve 623, the first air outlet valve port 6242 and the air inlet of the air exhaust valve 621 are communicated with the first interface 611 through a pipe joint 622 (a four-way pipe joint); the air outlet of the pressure limiting valve 623, the second air outlet valve port of the control valve 624 and the air outlet of the air exhaust valve 621 are communicated with the external atmosphere. The pressure limiting valve 623 can prevent the internal pressure of the pneumatic pinch valve from being too high. When it is necessary to perform the sewage pumping operation on the cleaning tank 120, the controller 700 controls the air exhaust valve 621 for air exhaust to be closed, controls the control valve 624 to connect the air outlet of the first negative pressure device 400 with the first interface 611 through the pipe joint 622, opens the first negative pressure device 400, the first negative pressure device 400 pumps air from the liquid storage container 310 at the same time, fills air into the pneumatic pinch valve and closes the pneumatic pinch valve, at this time, the switching control valve 624 connects the first negative pressure device 400 with the atmosphere, when the liquid storage container 310 is pumped to the negative pressure and reaches the set threshold value, the first negative pressure device 400 is closed, the air exhaust valve 621 is opened to exhaust air for the pneumatic pinch valve, the pneumatic pinch valve opens the liquid inlet pipeline 500 at the same time and pumps the sewage in the cleaning tank 120 into the liquid storage container 310. In the scheme, the pressure limiting valve 623 can be used to protect the pneumatic pinch valve, the on-off control of the control valve 624 can be used to realize the action switching of the first negative pressure device 400 in each stage, and after the pneumatic pinch valve is closed, the air outlet of the first negative pressure device 400 can be directly connected with the atmosphere through the switching of the control valve 624, so that the pulsation impact of the first negative pressure device 400 on the pneumatic pinch valve in the air exhaust process can be reduced.

[0094] Please refer to Figure 10 In the embodiment of the cleaning base station 10, the pneumatic pinch valve comprises a first interface 611 for air intake and air exhaust, and Figure 9The scheme differs from the previous one. The control unit 620 does not include the control valve 624, but only includes the pressure limiting valve 623 and the venting valve 621 for releasing air. The exhaust port of the first negative pressure device 400, the air inlet of the pressure limiting valve 623, and the air inlet of the venting valve 621 are all connected to the first interface 611 through the pipe joint 622 (four-way pipe joint 622). The exhaust ports of the pressure limiting valve 623 and the venting valve 621 are all connected to the external atmospheric environment. When it is necessary to perform a sludge removal operation on the cleaning tank 120, the first negative pressure device 400 operates, providing closing air pressure for the pneumatic clamp valve while simultaneously performing a sludge removal operation on the liquid storage container 310. After the pneumatic clamp valve is closed and the negative pressure inside the liquid storage container 310 reaches the set threshold, the first negative pressure device 400 is closed, and then the venting valve 621 is controlled to open to release air from the pneumatic clamp valve. At the same time as the pneumatic clamp valve opens, the sewage in the cleaning tank 120 is pumped into the liquid storage container 310. In this scheme, the first negative pressure device 400 and the pneumatic clamp valve are controlled together by the vent valve 621 to release air into the atmosphere, compared to Figure 9 The proposed solution simplifies the circuit and can save costs.

[0095] Please see Figure 11 In one embodiment of the clean base station 10 of this utility model, the clamp valve is a pneumatic clamp valve, and... Figure 9 , Figure 10 Unlike other solutions, the control unit 620 includes a second negative pressure device 625 that independently drives the pneumatic clamp valve. The second negative pressure device 625 is installed on the base station body 100, and its exhaust port and the air inlet of the vent valve 621 are both connected to the first interface 611 of the pneumatic clamp valve via a pipe connector 622 (a three-way pipe connector 622). The suction port of the second negative pressure device 625 and the exhaust port of the vent valve 621 are both connected to the external atmosphere. The second negative pressure device 625 drives the pneumatic clamp valve to clamp and block the flexible pipe section 513. When it is necessary to perform sludge removal operations on the cleaning tank 120, the second negative pressure device 625 operates, providing sufficient closing air pressure to the pneumatic clamp valve before stopping. After the second negative pressure device 625 stops operating, the first negative pressure device 400 starts operating, drawing the liquid storage container 310 to a negative pressure that reaches a set threshold before stopping. The vent valve 621 opens to release air from the pneumatic pinch valve, simultaneously drawing wastewater from the cleaning tank 120 into the storage container 310. This design includes a second negative pressure device 625 that independently supplies air to the pneumatic pinch valve. The opening and closing of the pneumatic pinch valve is unaffected by the operation of the first negative pressure device 400. The pneumatic pinch valve can be shut off before the first negative pressure device 400 begins pumping air from the storage container 310, thus accelerating the formation of negative pressure within the storage container 310. Furthermore, the vent valve 621 in this design allows the controller 700 of the cleaning base station 10 to control its opening and closing, thereby depressurizing the pneumatic pinch valve. Compared to a manual depressurization structure, this design offers a higher degree of automation.

[0096] The utility model still provides a kind of cleaning system, the cleaning system includes self-moving cleaning equipment and the cleaning base station 10 described in any one of the above.The cleaning base station 10 carries out cleaning operation for the cleaning component of cleaning equipment.Self-moving cleaning equipment is configured to walk on floor to complete corresponding cleaning operation.In actual application, self-moving cleaning equipment can be specifically manifested as sweeper, mop, sweeping and mopping integrated machine and so on.To exert its necessary cleaning function, self-moving cleaning equipment at least includes cleaning component, for example, can include cloth, roller brush etc.To realize the work need of cleaning component can also include spray component, fresh water tank, battery, walking driving system and other conventional structures.Self-moving cleaning equipment can also be integrated other various functions of existing self-moving cleaning equipment according to actual needs, can include but not limited to the autonomous travel planning function realized based on accelerometer, gyroscope, odometer and other sensor devices, the obstacle identification and anti-collision function realized based on distance sensor, image recognition device and other devices, the autonomous walking function realized based on driving wheel group, driven wheel group and driver and other mechanical mechanisms, the man-machine interaction function realized based on physical key, virtual key, display screen and indicator light and other devices, the energy supply function realized based on rechargeable battery and the intelligent control function realized based on control circuit or control chip, etc., not to one by one elaboration.

[0097] The utility model liquid pumping system through setting and liquid inlet pipeline corresponding on-off component, can realize the cut-off of liquid inlet pipeline, make the inside of liquid storage container form airtight space, like this under the action of first negative pressure device can make the liquid storage container form larger negative pressure, to compare the pumping operation mode of pumping gas and absorbing sewage, can reduce the times of pumping, and can pass through the volume of cleaning tank, set the negative pressure threshold value in liquid storage container, pump all sewage in cleaning tank into liquid storage container once.Can effectively improve the speed of pumping sewage, and reduce the length of time used for pumping sewage, and because reducing the times of pumping, so reduce the times of gas and sewage combination, simultaneously can reduce bubble sound, in addition, the utility model discloses cleaning base station compared to the pumping operation mode of pumping gas and absorbing sewage can obtain greater pumping force, can increase the carrying rate of the impurities deposited in cleaning tank, can reduce the dirt deposition of cleaning tank bottom, is favorable to realize the thorough maintenance-free of cleaning tank.

[0098] In summary, the practical problems in the prior art are effectively overcome, thereby having high utilization value and use significance. The above examples only exemplarily illustrate the principle and effect of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above examples without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A liquid extraction system, characterized by, The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system.

2. The liquid extraction system of claim 1, wherein, The application relates to a liquid suction system.

3. The liquid extraction system of claim 2, wherein, The application relates to a liquid suction system.

4. The liquid extraction system of claim 2, wherein, The application relates to a liquid suction system.

5. The liquid extraction system of claim 4, wherein, The application relates to a liquid suction system.

6. The liquid extraction system of claim 5, wherein, The application relates to a liquid suction system.

7. The liquid suction system according to claim 3 or 4 or 5, characterized in that The application relates to a liquid suction system.

8. The liquid extraction system of claim 3 or 4 or 5, wherein, The application relates to a liquid suction system.

9. The liquid extraction system of claim 1, wherein, The application relates to a liquid suction system.

10. The liquid extraction system of claim 9, wherein, The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. 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The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a liquid suction system. The application relates to a 11. The liquid extraction system of claim 1, wherein, The on-off assembly comprises a pipeline on-off valve, the pipeline on-off valve comprises a valve body and a valve core, the valve core is movably arranged in the valve body, the valve body has a valve body flow channel, the valve core has a first position and a second position, when the valve core is in the first position, the on-off assembly is in a first state, when the valve core is in the second position, the on-off assembly is in a second state.

12. The liquid extraction system of claim 11, wherein, The pipeline on-off valve is any one of a butterfly valve, a gate valve and an electromagnetic pinch valve.

13. The liquid extraction system of claim 3 or 4, wherein, The liquid inlet pipeline comprises a rigid pipe section and a flexible pipe section, the flexible pipe section passes through the moving path of the valve core of the electromagnetic pinch valve.

14. The liquid extraction system of claim 11, wherein, The liquid inlet pipeline comprises a straight pipe section extending in a straight line, and the on-off assembly is arranged corresponding to the straight pipe section of the liquid inlet pipeline.

15. The liquid extraction system of claim 1, wherein, The straight pipe section comprises a first straight pipe section and a second straight pipe section, an interface at one end of the on-off assembly is connected to the first straight pipe section, and an interface at the other end of the on-off assembly is connected to the second straight pipe section.

16. The liquid extraction system of claim 15, wherein, The time for switching the on-off assembly from the first state to the second state is between 0.3s and 1s.

17. The liquid extraction system of claim 1, wherein, The liquid pumping system further comprises a pressure relief valve arranged in the liquid storage container, when the negative pressure value in the liquid storage container is greater than the set threshold value, the pressure relief valve is opened to make the inner cavity of the liquid storage container communicate with the outside air, and when the negative pressure value in the liquid storage container is less than or equal to the set threshold value, the pressure relief valve is closed to seal the liquid storage container.

18. The liquid extraction system of claim 1, wherein, The pressure relief valve comprises a pressure relief cavity, a sealing plate and an elastic member, one end of the pressure relief cavity is connected to the inner cavity of the liquid storage container, the other end is provided with a pressure relief opening connected to the outside atmosphere, one end of the elastic member is mounted on the wall of the pressure relief cavity, and the other end tightly seals the sealing plate on the pressure relief opening.

19. The liquid extraction system of claim 18, wherein, A guide rod is arranged on the wall of the pressure relief cavity, and the sealing plate and the guide rod are in sliding fit.

20. The liquid extraction system of claim 19, wherein, One side of the sealing plate facing the guide rod is provided with a sliding block, one side of the sliding block facing the guide rod is provided with a sliding groove, and the end of the guide rod slides in the sliding groove; or, one side of the sealing plate facing the guide rod is provided with a sliding block, one side of the guide rod facing the sealing plate is provided with a sliding groove, and the sliding block slides in the sliding groove.

21. The liquid extraction system of claim 20, wherein, One side of the sealing plate away from the elastic member is provided with a sealing member, and the projection of the pressure relief opening on the sealing plate is located in the area surrounded by the sealing member.

22. The liquid extraction system of claim 19, wherein, The base station body is provided with a cleaning tank at the bottom, the liquid pumping system is arranged in the base station body, and one end of the liquid inlet pipeline away from the liquid storage container is connected to the cleaning tank.

23. A cleaning base station, characterized by, ​ 24. The cleaning dock of claim 23, wherein, The cleaning base station further comprises a liquid level detection device, which comprises a detection element and a sensing piece, the detection element is used for sensing the position of the sensing piece, the sensing piece is movably arranged in the liquid storage container and is raised along with the rising of the liquid level in the liquid storage container; or, after the liquid level in the liquid storage container reaches a preset height, continues to be raised along with the rising of the liquid level.

25. The cleaning dock of claim 24, wherein, The sensing piece has a rotating end and a sensing end, the rotating end is rotationally connected in the liquid storage container, and the sensing end rotates around the rotation axis of the rotating end to form movement in the height direction.

26. The cleaning dock of claim 25, wherein, The detection element comprises a magnetic piece and a Hall sensor, the magnetic piece is arranged on the sensing end, and the Hall sensor is arranged in the base station body and corresponds to the magnetic piece.

27. The cleaning dock of claim 24, wherein, The sensing piece has a highest sensing position, the highest sensing position is the highest liquid level height that can be sensed by the sensing piece, the liquid storage container has a highest capacity surface, the highest capacity surface is the liquid level height corresponding to the most liquid that can be stored by the liquid storage container without liquid overflow, and the volume between the highest sensing position and the highest capacity surface is greater than or equal to the volume of the cleaning tank.

28. The cleaning station of claim 27, wherein, The volume between the highest sensing position and the highest capacity surface is greater than or equal to the volume of the liquid generated in the cleaning tank during a single cleaning work of the cleaning base station on the cleaning assembly.

29. The cleaning base station of claim 23, wherein, The cleaning base station further comprises a drain pipeline, one end of the drain pipeline is in communication with the liquid storage container, and the other end is a free end, and a valve part is arranged on the drain pipeline.

30. A cleaning system characterized by, The cleaning base station comprises a self-moving cleaning device and any one of the cleaning base stations according to claims 23 to 29. The cleaning base station comprises a self-moving cleaning device and any one of the cleaning base stations according to claims 23 to 29.

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