Control valve, base station waterway system and cleaning system

Abstract

The embodiment of the utility model discloses a control valve, a base station waterway system and a cleaning system.The control valve comprises a valve body, a valve element assembly, a deformable diaphragm and a pushing piece, the valve body is provided with a first cavity, a water passing channel, a water inlet hole and a water outlet hole, and the water inlet hole communicates with the first cavity; the valve element assembly is movably arranged in the valve body, and in the initial state, the valve element assembly keeps closing the water passing channel. The edge of the diaphragm is in sealing connection with the valve body so as to define a second cavity with the valve body, the water outlet hole is communicated with the second cavity, and the first cavity is communicated with the second cavity through a water channel; the pushing piece is arranged on the side, facing the second cavity, of the diaphragm. The diaphragm moves towards or away from the second cavity along with the pressure change in the second cavity so as to drive the pushing piece to push or not push the valve element assembly, and the valve element assembly is correspondingly made to open or close the water passing channel. According to the technical scheme provided by the embodiment of the invention, the use of control lines is reduced, the cost of the base station waterway system is reduced, and the installation steps are simplified; meanwhile, the length of a high-pressure section in the pipeline is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning systems, in particular to a control valve, a base station water system and a cleaning system. Background Art

[0002] Today's cleaning equipment has gradually entered households, replacing manual cleaning of the floor and becoming a good helper in people's lives. Cleaning equipment is usually equipped with a base station, which is equipped with a clean water tank to provide cleaning equipment with care such as adding clean water and washing rags. The clean water tank of the base station can be connected to the indoor tap water joint through a water pipe to achieve water replenishment in the clean water tank. Since the water pressure of tap water is relatively high, if the water pipe between the clean water tank and the tap water joint is always in a high water pressure state, it may cause the water pipe to rupture. The existing solution is to install a solenoid valve at the tap water joint. When the clean water tank needs to be replenished, the solenoid valve is controlled to open, and the tap water replenishes the clean water tank through the water pipe. After the clean water tank is replenished, the solenoid valve is controlled to close to disconnect the water pipe from the tap water.

[0003] However, the above solution still has the problem that the pipe connecting the tap water and the base station will be subjected to high pressure for a long time, and there will be a risk of bursting and leaking of the water pipe. On the other hand, it may be necessary to lead a control line from the base station to connect to the solenoid valve or control the solenoid valve wirelessly, which is costly and complicated to install. Utility Model Content

[0004] The utility model provides a control valve, a base station water system and a cleaning system, which are intended to reduce the length of the high-pressure section in the pipeline to improve safety, while reducing the cost of the base station water system and simplifying the installation steps.

[0005] To achieve the above-mentioned purpose, the control valve proposed by the utility model comprises:

[0006] The valve body is provided with a first cavity, a water passage, a water inlet hole and a water outlet hole, wherein the water inlet hole is connected with the first cavity;

[0007] A valve core assembly is movably disposed in the valve body, and in an initial state, the valve core assembly keeps closing the water passage;

[0008] a deformable diaphragm, the edge of which is sealed and connected to the valve body to enclose the valve body to form a second cavity, the water outlet is connected to the second cavity, and the first cavity is connected to the second cavity through the water passage; and

[0009] A pushing member, disposed on a side of the diaphragm facing the second cavity;

[0010] The diaphragm moves toward or away from the second chamber as the pressure in the second chamber changes, so as to drive the pusher to drive or not drive the valve core assembly, thereby correspondingly causing the valve core assembly to open or close the water passage.

[0011] In some embodiments, the first end of the valve body is provided with an opening, the diaphragm covers the opening of the first end of the valve body, the first end of the valve body is provided with a first stop, and the edge of the diaphragm is provided with a second stop that matches the first stop; and / or,

[0012] The control valve further comprises a first cover body, wherein the first cover body covers the first end of the valve body, and the edge of the diaphragm is clamped between the first cover body and the first end of the valve body.

[0013] In some embodiments, a sealing rib is provided on the first stop or the second stop or between the first stop and the second stop, and the sealing rib is clamped between the first stop and the second stop; and / or,

[0014] A supporting rib is provided on the inner side of the cover plate of the first cover body or on the back side of the second stopper or between the inner side of the cover plate of the first cover body and the back side of the second stopper, and the supporting rib is clamped between the back side of the second stopper and the first cover body.

[0015] In some embodiments, the diaphragm is further provided with a third stop adjacent to and in the opposite direction of the second stop, and the inner side of the cover plate of the first cover body is correspondingly provided with a stop rib position adapted to the third stop.

[0016] In some embodiments, a cavity is formed between the side of the diaphragm facing away from the second cavity and the cover plate of the first cover body, a gap is provided between the cover frame of the first cover body and the outer wall of the valve body, and at least one groove is constructed on the inner side of the cover plate of the first cover body, and the groove connects the gap and the cavity.

[0017] In some embodiments, the pusher is provided with at least one positioning hole, the diaphragm is provided with at least one positioning buckle, the positioning buckles correspond to the positioning holes one by one, and each positioning buckle is respectively inserted into the corresponding positioning hole and buckled on the periphery of the positioning hole; and / or,

[0018] The pusher comprises a bottom plate which is in contact with the surface of the diaphragm, and a top column for driving the valve core assembly is provided on the bottom plate; and / or,

[0019] The side of the pusher facing away from the diaphragm is provided with at least one reinforcing rib extending from the central area to the edge.

[0020] In some embodiments, a first filter element and / or a second filter element located between the water inlet and the water passage is provided in the first cavity, the second filter element is provided between the first filter element and the water passage, and the mesh number of the first filter element is greater than the mesh number of the second filter element.

[0021] In some embodiments, the first cavity has a first cylinder wall arranged around the water passage and having an opening at the top, the first filter element is a tubular sponge that is interference fit on the first cylinder wall, and the second filter element has a filter screen covering the opening at the top of the first cylinder wall.

[0022] In some embodiments, the valve body includes a main body and a first shell detachably connected to the main body, the first shell and the main body enclose the first cavity, the first shell is provided with a limiting rib and a second cylinder wall with an opening at the bottom end, the second cylinder wall is interference fit on the tubular sponge, the limiting rib is interference fit in one end of the tubular sponge close to the first shell, and there is a spacing space between the limiting rib and the filter.

[0023] In some embodiments, the limiting rib is provided with at least one protrusion which abuts against the filter screen, and the valve core assembly is arranged in a space enclosed by the second filter element and the first cylinder wall.

[0024] In some embodiments, the valve core assembly includes a valve core and a reset elastic member, the valve core is connected to the valve body via the reset elastic member, the first end of the valve core is provided with a sealing member for closing the water passage, and the reset elastic member applies a force to the valve core to move the valve core in a direction of closing the water passage.

[0025] In some embodiments, the resetting elastic member is a compression spring, the valve body is provided with a blind hole adapted to the outer diameter of the compression spring, the bottom surface of the blind hole is provided with a guide column adapted to the inner diameter of the compression spring, and the compression spring is sleeved on the guide column; and / or,

[0026] The valve core assembly is arranged in the first cavity, the sealing member closes the first port of the water passage close to the first cavity, and the end of the pusher close to the first cavity is inserted into the water passage and is adjacent to or connected to the sealing member.

[0027] In some embodiments, a coaxial guide hole is provided on the guide column, and the valve core is inserted into the guide hole.

[0028] In some embodiments, the outer surface of the seal that closes the first port is an arcuate surface; or, the outer surface of the seal that closes the first port is a plane, and a flange surrounding the first port is provided on the cavity wall of the valve body where the first port is set, and the seal is pressed against the flange.

[0029] The utility model also proposes a base station water system, including a base station and the above-mentioned control valve, the base station including a clean water tank and a pump device connected to the clean water tank, the water inlet of the control valve is connected to a water source, and the water outlet is connected to the clean water tank; the pump device draws negative pressure to the clean water tank, so that the valve core moves to open the water passage; the pump device stops drawing negative pressure to the clean water tank, so that the valve core moves to close the water passage.

[0030] The utility model also provides a cleaning system, comprising a cleaning robot and the above-mentioned base station water system, wherein the base station of the base station water system provides clean water to care for the cleaning robot.

[0031] The technical solution of the control valve of the utility model realizes whether the control valve is opened by controlling the pressure change in the second chamber of the control valve. In this way, when the control valve is used in a cleaning system as a valve for controlling the on-off of a clean water tank (or base station) and a water source connector, the pressure change in the second chamber is controlled by a pump device of the base station through a connecting pipeline between the clean water tank (or base station) and the water outlet of the control valve, so that the opening and closing of the control valve can be controlled without the need for electrical signal control. Compared with the solenoid valve in the prior art, the control valve of the utility model omits the control line or wireless control led out from the base station, thereby reducing costs, omits installation operations such as wiring and protection of the control line, simplifies the installation steps of the base station, reduces the difficulty of installation, and reduces the length of the high-pressure section in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of a control valve in one embodiment of the utility model;

[0033] Figure 2 It is a schematic cross-sectional structure diagram of a control valve in one embodiment of the utility model;

[0034] Figure 3 for Figure 2 Schematic diagram of some structures;

[0035] Figure 4 for Figure 2 A magnified schematic diagram of position A in the middle;

[0036] Figure 5 It is a schematic cross-sectional structure diagram of a control valve in another embodiment of the utility model;

[0037] Figure 6 for Figure 5 Schematic diagram of some structures;

[0038] Figure 7 This is a structural schematic diagram of the first cover body of the control valve of the utility model;

[0039] Figure 8 This is a schematic diagram of the structure of the pusher of the control valve of the utility model;

[0040] Fig. 9 for Figure 2 or Figure 5 A schematic structural diagram of the first shell in FIG.

[0041] Fig.10 It is a structural schematic diagram of a base station water system in one embodiment of the utility model. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0045] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0046] In the current technologies related to the control of water replenishment in the clean water tank of the base station, a valve body (such as a solenoid valve) controlled by an electrical signal is set on the connecting water pipe between the clean water tank (or base station) and the water source connector (such as a tap water connector). The opening and closing of the valve is controlled by the electrical signal, and in order to prevent the connecting water pipe from being subjected to high water pressure when the valve is closed, the valve body is usually set at a position adjacent to the water source connector. In the above scheme, since the valve body is controlled by the electrical signal of the base station, the base station needs to lead out a control line to connect to the valve body or control the valve body wirelessly, which increases the cost, and when installing the base station, it may be necessary to additionally wire and protect the control line, which makes the installation more complicated and increases the difficulty of installing the base station; at the same time, the pipeline connecting the tap water and the base station is subjected to high pressure for a long time.

[0047] The inventor of this application has studied the pain points of the above-mentioned related technologies and found that the above-mentioned pain points can be solved by using the structural characteristics of the base station itself to design the valve body connected to the water pipe to remove electricity, thereby obtaining a valve body with a design of removing electricity, namely, the control valve proposed in this application. The control valve solution proposed in this application can achieve the beneficial effects of reducing costs, simplifying the installation of the base station, reducing the difficulty of installation, and reducing the length of the high-pressure section in the pipeline.

[0048] The control valve proposed in the utility model is mainly used in the water system of a base station to replace the solenoid valve at the water source end of the existing water system of the base station. Of course, it can also be used in other scenarios with similar needs.

[0049] Combined with reference Figure 1 and Figure 2 or Figure 5 The control valve of this embodiment includes a valve body 10, a valve core assembly 20, a deformable diaphragm 30 and a pusher 40. The valve body 10 is provided with a first cavity Q1, a water passage 103, a water inlet 101 and a water outlet 102; the valve core assembly 20 is movably arranged in the valve body 10 to control the opening and closing of the water passage 103; and the valve core assembly 20 keeps the water passage 103 closed in the initial state. The edge of the diaphragm 30 is sealed and connected with the valve body 10 to enclose the valve body 10 to form a second cavity Q2, the water inlet 101 is connected with the first cavity Q1, the water outlet 102 is connected with the second cavity Q2, and the first cavity Q1 is connected with the second cavity Q2 through the water passage 103, that is, when the control valve is in the open state (that is, when the water passage 103 is open), the water flow path inside the control valve is: water inlet 101→first cavity Q1→water passage 103→second cavity Q2→water outlet 102. The pusher 40 is disposed on a side of the diaphragm 30 facing the second chamber Q2 (referred to as the inner side of the diaphragm 30 for convenience of subsequent description) and is used to push the valve core assembly 20 to control whether the valve core assembly 20 opens the water passage 103 .

[0050] In this embodiment, since the diaphragm 30 can be deformed, the diaphragm 30 will move toward or away from the second chamber Q2 as the pressure in the second chamber Q2 changes, so as to drive the pusher 40 to push or not push the valve core assembly 20, and correspondingly move the valve core assembly 20 to open or close the water passage 103. Specifically, the working principle of the control valve of this embodiment is as follows: when the pressure in the second chamber Q2 changes, the force balance of the diaphragm 30 is broken, the diaphragm 30 will move in the corresponding direction to re-achieve the force balance, and the pusher 40 will move with the diaphragm 30; when the pressure in the second chamber Q2 decreases (for example, by pumping negative pressure into the second chamber Q2 through the water outlet 102), the pressure on the inner side of the diaphragm 30 decreases, while the pressure on the outer side of the diaphragm 30 (that is, the side of the diaphragm 30 facing away from the second chamber Q2) does not change, so the diaphragm 30 will Under the action of the pressure on its outside, it deforms and moves toward the second chamber Q2, thereby driving the push member 40 to move to push the valve core assembly 20 to open the water passage 103; similarly, when the pressure in the second chamber Q2 is restored, the pressure on the inner side of the diaphragm 30 is restored, and the diaphragm 30 is restored to the initial force balance state under the action of the inner pressure. The push member 40 is reset as the diaphragm 30 is reset, and does not push the valve core assembly 20 to open the water passage 103, so that the valve core assembly 20 returns to its initial state to close the water passage 103.

[0051] This embodiment further describes the working method of the control valve in a water system in more detail. For example, the water inlet 101 of the control valve is connected to a water source, and the water outlet 102 is connected to a water-using side (e.g., a base station of a cleaning system). The working method of the control valve is as follows:

[0052] 1. When the negative pressure device (e.g., water pump, air pump, etc.) on the water-using side is turned on and negative pressure is pumped to the second chamber Q2 through the water outlet 102, the pressure (water pressure or air pressure) in the second chamber Q2 is reduced, and the diaphragm 30 drives the pusher 40 to move toward the second chamber Q2, and the pusher 40 drives the valve core assembly 20 to move the valve core assembly 20 to open the water passage 103, so that the water inlet 101 is connected to the water outlet 102 through the first chamber Q1, the water passage 103, and the second chamber Q2 in sequence, thereby realizing the opening of the control valve, that is, the water source is connected to the water-using side;

[0053] 2. When the negative pressure device on the water-using side (for example, a water pump, an air pump, etc.) is closed and the negative pressure is stopped from being pumped to the second chamber Q2 through the water outlet 102, the pressure in the second chamber Q2 gradually recovers because the negative pressure device cannot seal the pressure. When the pressure is restored to the pressure required for the push member 40 to push the valve core assembly 20, the diaphragm 30 drives the push member 40 to gradually reset, and the valve core assembly 20 also gradually recovers to the initial state (or, the valve core assembly 20 is reset under the action of the elastic member, and drives the push member 40 and the diaphragm 30 to gradually reset). When the diaphragm 30 and the push member 40 are completely reset, the push member 40 no longer pushes the valve core assembly 20, and the valve core assembly 20 returns to the initial state, keeping the water passage 103 closed, so that the first chamber Q1 and the second chamber Q2 are disconnected, that is, the water inlet 101 is disconnected from the water outlet 102, so as to realize the closure of the control valve, that is, the water source is disconnected from the water-using side.

[0054] The technical solution of the control valve of this embodiment is to open or close the control valve by controlling the pressure change in the second chamber Q2 of the control valve. In this way, when the control valve is used in the cleaning system as a valve for controlling the connection and disconnection between the clean water tank and the water source connector, the pressure change in the second chamber Q2 is controlled by the pump device of the base station through the connecting pipeline between the clean water tank (or base station) and the water outlet 102 of the control valve, so as to control the opening and closing of the control valve without the need for electrical signal control. Compared with the solenoid valve in the prior art, the control valve of the utility model omits the control line led out from the base station, thereby reducing the cost, omits the installation operations such as wiring and protection of the control line, simplifies the installation steps of the base station, and reduces the difficulty of installation. At the same time, it reduces the length of the high-pressure section in the pipeline.

[0055] In addition, the control valve of the present embodiment directly adopts a whole diaphragm 30 and a valve body 10 to enclose the second chamber Q2, and the push member 40 is arranged on the inner side of the diaphragm 30. Therefore, it is only necessary to perform a sealing design on the connection between the edge of the diaphragm 30 and the valve body 10, and no sealing design is required between the push member 40 and the diaphragm 30. Compared with the prior art which adopts a movable seat (whose function is equivalent to the push member 40 of the present embodiment) and an annular diaphragm in which the inner ring edge is sealedly connected to the movable seat and the outer ring edge is sealedly connected to the valve body 10, in the scheme of the present embodiment, the installation requirements of the push member 40 and the diaphragm 30 are lower, the installation is easier, the sealing design is simpler, and the cost is lower.

[0056] See also Figures 2 to 4 In some embodiments, the first end ( Figure 1-Figure 3The lower end of the valve body 10 is provided with an opening 104, the diaphragm 30 covers the opening 104 of the first end of the valve body 10, the first end of the valve body 10 is provided with a first stopper 112, the edge of the diaphragm 30 is provided with a second stopper 31 adapted to the first stopper 112, the first stopper 112 and the second stopper 31 are both a full circle structure arranged uninterruptedly around the opening 104 of the first end of the valve body 10, and the sealing connection between the diaphragm 30 and the valve body 10 is achieved through the cooperation of the first stopper 112 and the second stopper 31. In the figure of this embodiment, the first stopper 112 is a convex stopper, and the second stopper 31 is a concave stopper as an example. Of course, in other embodiments, the first stopper 112 can also be a concave stopper, and the second stopper 31 can be a convex stopper.

[0057] In some embodiments, the control valve further includes a first cover 50, which covers the first end of the valve body 10, and the edge of the diaphragm 30 is clamped between the first cover 50 and the first end of the valve body 10. The first cover 50 is installed on the first end of the valve body 10 to compress the edge of the diaphragm 30, thereby preventing the second stop 31 of the diaphragm 30 and the first stop 112 of the valve body 10 from loosening, ensuring that the edge of the diaphragm 30 is sealed and connected firmly to the first end of the valve body 10. The first cover 50 and the first end of the valve body 10 can be connected by buckling, screwing or other connection methods, which is not limited in this application.

[0058] In some embodiments, a sealing rib 01 is provided on the first stop 112 or the second stop 31, and the sealing rib 01 is clamped between the first stop 112 and the second stop 31. In this embodiment, the sealing rib 01 is clamped between the first stop 112 and the second stop 31 to avoid the poor sealing effect caused by the possible gap between the first stop 112 and the second stop 31. The sealing rib 01 can be a structure in which the first stop 112 protrudes toward the second stop 31, or a structure in which the second stop 31 protrudes toward the first stop 112, or a separate component (such as a sealing ring) located between the first stop 112 and the second stop 31.

[0059] In some embodiments, a supporting rib 02 is provided on the inner side of the cover plate 51 of the first cover body 50 (the side of the diaphragm 30 facing the cover plate 51) or the back side of the second stopper 31 (the side of the diaphragm 30 facing the cover plate 51), and the supporting rib 02 is clamped between the back side of the second stopper 31 and the first cover body 50. In this embodiment, the supporting rib 02 is provided between the second stopper 31 and the first cover body 50, so that even if there is a gap between the first cover body 50 and the back side of the second stopper 31 due to tolerance, the supporting rib 02 can absorb the gap, ensuring that the first cover body 50 is pressed against the back side of the second stopper 31, thereby ensuring the sealing performance of the first stopper 112 and the second stopper 31. Among them, the supporting rib 02 can be a protruding structure on the back side of the second stopper 31, or a protruding structure on the inner side of the cover plate 51 of the first cover body 50, or a separate component (such as a sealing ring) located between the back side of the second stopper 31 and the cover plate 51 of the first cover body 50.

[0060] In some embodiments, the diaphragm 30 is further provided with a third stop 32 adjacent to and in the opposite direction to the second stop 31, and a stop rib 511 adapted to the third stop 32 is correspondingly provided on the inner side of the cover plate 51 of the first cover body 50; wherein, the second stop 31 and the third stop 32 are in opposite directions, which means that the second stop 31 and the third stop 32 are respectively arranged on different sides of the diaphragm 30, that is, the second stop 31 is arranged on the side of the diaphragm 30 facing the second cavity Q2, and the third stop 32 is arranged on the side of the diaphragm 30 facing away from the second cavity Q2; it can also be said that the second stop 31 and the third stop 32 have different directions, as shown in the figure, the second stop 31 is arranged away from the cover plate 51 of the first cover body 50, and the third stop 32 is arranged toward the cover plate 51 of the first cover body 50. The diaphragm 30 is limited by the cooperation between the stop rib 511 and the third stop 32, so that the diaphragm 30 is more stable when it is deformed and moved under force; in addition, the first stop 112 is plug-fitted with the second stop 31, and the stop rib 511 is plug-fitted with the third stop 32. The first stop 112 and the stop rib 511 are plug-fitted into two adjacent stops facing each other to form a plug-in structure, which further improves the reliability and firmness of the sealing connection between the edge of the diaphragm 30 and the valve body 10.

[0061] See also Figure 7 The stop rib position 511 can be an integral structure or can be composed of two or more substructures; the number of the stop rib position 511 can be one or more, and more than one stop rib position 511 can all be the above integral structure or substructure, or can also be a combination of the above integral structure or substructure. Figure 7 As shown in , six stop ribs 511 are provided on the inner side of the cover plate 51 , three of which are integral structures and the other three are two-piece substructures.

[0062] See also Figure 2 , Figure 4 and Figure 7 In some embodiments, a cavity V1 is formed between the side of the diaphragm 30 facing away from the second cavity Q2 (referred to as the back side of the diaphragm 30) and the cover plate 51 of the first cover body 50, that is, the back side of the diaphragm 30 is not completely in contact with the cover plate 51 of the first cover body 50; a gap V2 is provided between the cover frame 52 of the first cover body 50 and the outer wall of the valve body 10, and at least one groove 512 is configured on the inner side of the cover plate 51 of the first cover body 50, and the groove 512 may be a hole passing through the cover plate 51 to communicate with the air of the external environment; the groove 512 may extend from the outer periphery of the cover plate 51 toward the stop rib position 511 or pass through the stop rib position 511 (for example, when the stop rib position 511 is two sub-structures, the groove 512 may be located between the two sub-structures) to connect the gap V2 and the cavity V1. In the present embodiment, the cavity V1 on the back side of the diaphragm 30 is connected to the gap V2 between the cover frame 52 of the first cover body 50 and the outer wall of the valve body 10 through the groove 512, so as to ensure that the air pressure on the back side of the diaphragm 30 is the same as the surrounding environmental air pressure, thereby ensuring the normal opening and closing function of the control valve; and, compared with the prior art method of balancing the air pressure by opening a hole on the cover plate 51 of the first cover body 50, the scheme of the present embodiment will not affect the air pressure balance on the back side of the diaphragm 30 even when the outer side of the cover plate 51 of the first cover body 50 of the control valve is installed by gluing, and the control valve can still work normally, thereby meeting the needs of more installation methods of the control valve.

[0063] See also Figure 2 , Figure 5 and Figure 8 In some embodiments, at least one positioning hole 411 is provided on the pusher 40, and at least one positioning buckle 33 is provided on the diaphragm 30. The positioning buckles 33 correspond to the positioning holes 411 one by one, and each positioning buckle 33 is inserted into the corresponding positioning holes 411 and buckled on the periphery of the positioning holes 411. In this embodiment, the installation connection method of the pusher 40 and the diaphragm 30 is buckling, that is, the positioning buckles 33 on the diaphragm 30 pass through the positioning holes 411 on the pusher 40 and buckle the periphery of the positioning holes 411, so that the pusher 40 is fixed to the diaphragm 30 by buckling. This buckling method is not only firmly installed, but also simpler and more convenient to assemble, which is conducive to improving the production efficiency of the control valve. Of course, in other embodiments, the pusher 40 and the diaphragm 30 can also be installed by other connection methods, such as bonding.

[0064] In some embodiments, the pusher 40 includes a bottom plate 41 that is in contact with the surface of the diaphragm 30, and a top column 42 for driving the valve core assembly 20 is provided on the bottom plate 41; the bottom plate 41 is in contact with the surface of the diaphragm 30, so that when the diaphragm 30 is subjected to external force, the diaphragm 30 drives the pusher 40 to move more smoothly, so that the top column 42 of the pusher 40 drives the valve core assembly 20 more stably.

[0065] In some embodiments, the side of the pusher 40 facing away from the diaphragm 30 is provided with at least one reinforcing rib 412 extending from the central area to the edge; the central area may, for example, refer to a circular area of ​​a preset size with the center of the pusher 40 as the center, or a square area, a regular pentagonal area, etc. of a preset size with the center of the pusher 40 as the center point. For example, the top column 42 of the pusher 40 is arranged at the center of the bottom plate 41, and each reinforcing rib 412 extends from the top column 42 to the edge of the bottom plate 41. This embodiment scheme strengthens the strength of the pusher 40 by providing the reinforcing rib 412 on the pusher 40, prevents the bottom plate 41 of the pusher 40 from being deformed by force, and further affects the normal driving of the valve core assembly 20 by the pusher 40. In some embodiments, the bottom plate 41 may also be provided with a flange to further enhance the strength of the bottom plate 41 and prevent the bottom plate 41 from being deformed by force.

[0066] See also Figure 2 and Figure 5 In some embodiments, a first filter element 60 and / or a second filter element 70 is provided in the first chamber Q1 between the water inlet hole 101 and the water passage 103. The first filter element 60 and the second filter element 70 are used to filter out impurities in the water. When the first filter 60 and the second filter 70 are simultaneously arranged in the first chamber Q1 of the control valve, the second filter 70 is arranged between the first filter 60 and the water passage 103, that is, the water entering the water inlet 101 of the valve body 10 passes through the first filter 60 and the second filter 70 in sequence before reaching the water passage 103; and the mesh number of the first filter 60 is greater than the mesh number of the second filter 70, for example, the first filter 60 is 120 meshes, and the second filter 70 is 40 meshes; the second filter 70 with a lower mesh number is filtered after the first filter 60 filters, mainly filtering out the debris falling off the first filter 60, such as when the first filter 60 is made of sponge material, after long-term use, sponge debris is easy to fall off, and at this time, the second filter 70 can filter out the falling sponge debris. Compared with the prior art solution of adding a filtering device on the pipeline (for example, the filtering device is arranged in the pipeline) to achieve filtering, the present embodiment combines the filtering function in the control valve, so that the control valve integrates the filtering function. When in use, there is no need to install an additional filtering device on the pipeline, which not only simplifies the pipeline structure and pipeline installation operation, but also avoids the problem of frequent pipeline replacement due to easy clogging of the filtering device in the pipeline in the prior art solution, thereby reducing maintenance difficulty and maintenance cost.

[0067] See also Figure 2 and Figure 3 ,or Figure 5 and Figure 6In some embodiments, the first chamber Q1 has a first cylinder wall 105 which is arranged around the water passage 103 and has an opening at the top, the first filter element 60 is a tubular sponge which is fitted on the first cylinder wall 105, and the second filter element 70 has a filter screen 71 which covers the opening at the top of the first cylinder wall 105. When the control valve of this embodiment is opened, water enters the first chamber Q1 from the water inlet 101, is filtered by the sponge, and then penetrates into the upper area of ​​the second filter element 70, then enters the area enclosed by the first cylinder wall 105 through the second filter element 70, then flows into the second chamber Q2 from the water passage 103, and finally flows out from the water outlet 102.

[0068] In some embodiments, the valve body 10 includes a main body 11 and a first shell 12 detachably connected to the main body 11, the first shell 12 and the main body 11 enclose a first cavity Q1, the first shell 12 is provided with a limiting rib 108 and a second cylinder wall 106 with an opening at the bottom end, the second cylinder wall 106 is interference fit on the tubular sponge, that is, the inner and outer side walls of the tubular sponge are respectively tightly attached to the first cylinder wall 105 and the second cylinder wall 106, the first cylinder wall 105 and the second cylinder wall 106 constitute a plug-in structure, and the tubular sponge is firmly fixed in the first cavity Q1; and, The limiting rib 108 on the first shell 12 is inserted into the end of the tubular sponge close to the first shell 12 by interference fit. The limiting rib 108 is a ring-shaped protrusion structure coaxial with the second cylinder wall 106. In this way, the end of the tubular sponge close to the first shell 12 is completely wrapped by the structure set on the first shell 12 (that is, the groove structure formed by the limiting rib 108 and the second cylinder wall 106), which can prevent some impurities from entering the space behind along the outer wall of the tubular sponge and along the end face of the tubular sponge close to the first shell 12, thereby ensuring the filtering effect. There is a spacing space V3 between the limiting rib 108 and the filter screen 71, so that the water entering the water inlet 101 can enter the upper area of ​​the first cylinder wall 105 from the spacing space V3 after passing through the tubular sponge, and then reach the water passage 103 after being filtered by the filter screen 71.

[0069] The first shell 12 and the body 11 can be connected by screw connection, buckle connection or other connection methods, which are not limited in this application. A sealing ring (not numbered, see Figure 2 , 3 , 5 or 6), the connection between the first shell 12 and the body 11 is sealed to ensure the sealing of the first cavity Q1.

[0070] Combined with reference Fig. 9In some embodiments, the limiting rib 108 is provided with at least one protrusion 1081 that abuts against the filter screen 71, and the valve core assembly 20 is disposed in a space enclosed by the second filter element 70 and the first cylinder wall 105. The first housing 12 abuts against the filter screen 71 through the protrusion 1081 on the limiting rib 108. Even if the connection between the second filter element 70 and the first cylinder wall 105 fails, the second filter element 70 will not be separated from the first cylinder wall 105 due to the abutment of the protrusion 1081, thereby ensuring that the filtering function of the second filter element 70 will not fail.

[0071] See also Figure 2 and Figure 5 In some embodiments, the valve core assembly 20 includes a valve core 21 and a reset elastic member 22. The valve core 21 is connected to the valve body 10 via the reset elastic member 22. The first end of the valve core 21 (the end facing the diaphragm) Figure 2 or 5) is provided with a sealing member 211 for closing the water passage 103, and the resetting elastic member 22 exerts a force on the valve core 21 to make the valve core 21 move in the direction of closing the water passage 103. In the initial state, the valve core 21 keeps closing the water passage 103 under the force of the resetting elastic member 22; when the push member 40 pushes the valve core 21, the push member 40 exerts a force opposite to the force of the resetting elastic member 22 on the valve core 21, so that the valve core 21 overcomes the force of the resetting elastic member 22 and moves to the state of opening the water passage 103; when the push member 40 no longer pushes the valve core 21, the push member 40 no longer exerts a force on the valve core 21, and the valve core 21 is reset under the force of the resetting elastic member 22 to restore to the state of closing the water passage 103. Among them, the resetting elastic member 22 can be a spring, an elastic rubber block, an elastic airbag, a compression spring, etc.

[0072] Combined with reference Figure 3 and Figure 6 In some embodiments, the reset elastic member 22 is a compression spring, and a blind hole 109 adapted to the outer diameter of the compression spring is provided in the valve body 10, and a guide column 110 adapted to the inner diameter of the compression spring is provided on the bottom surface of the blind hole 109, and the compression spring is sleeved on the guide column 110; in this way, the inner wall of the compression spring fits with the outer peripheral wall of the guide column 110, and the outer wall of the compression spring fits with the hole wall of the blind hole 109, and the guide column 110 and the blind hole 109 respectively limit the inner and outer sides of the compression spring, preventing the compression spring from twisting and deforming when subjected to force, ensuring the stability of the force change of the compression spring during compression, and thus ensuring the stable operation of the valve core assembly 20.

[0073] In some embodiments, the valve core assembly 20 is disposed in the first cavity Q1, the seal 211 closes the first port 1031 of the water passage 103 close to the first cavity Q1, and the end of the pusher 40 close to the first cavity Q1 is inserted into the water passage 103 and is adjacent to the seal 211 or connected (such as abutting or fixedly connected) to the seal 211. The scheme in the figure of this embodiment is combined with the scheme of the first filter 60 and the second filter 70 disposed in the first cavity Q1 as an example, and the blind hole 109 is disposed on the second filter 70; of course, in other embodiments, when the second filter 70 is not disposed, the blind hole 109 can also be disposed on other structural parts of the valve body 10 (for example, on the side of the first housing 12 facing the water passage 103). When the pressure in the second chamber Q2 decreases, the pusher 40 moves into the second chamber Q2 along with the diaphragm 30, and the end of the pusher 40 inserted in the water passage 103 pushes the sealing member 211, so that the valve core 21 squeezes the reset elastic member 22 and moves, so that the sealing member 211 exposes the first port 1031 of the water passage 103, and the first chamber Q1 is connected with the second chamber Q2 through the water passage 103; when the pressure in the second chamber Q2 is restored, the pusher 40 moves back to the second chamber Q2 along with the diaphragm 30, and the end of the pusher 40 inserted in the water passage 103 no longer pushes the sealing member 211, and the valve core 21 is reset under the elastic force of the reset elastic member 22, so that the sealing member 211 closes the first port 1031 of the water passage 103, and the first chamber Q1 is disconnected from the second chamber Q2.

[0074] In some embodiments, a coaxial guide hole 111 is provided on the guide column 110, and the valve core 21 is inserted into the guide hole 111. By inserting the valve core 21 into the guide hole 111, the movement of the valve core 21 is guided to prevent the valve core 21 from being deviated when being pushed by the pusher 40, and further improve the working stability of the valve core assembly 20.

[0075] In some embodiments, the outer surface of the seal 211 that closes the first port 1031 is an arc-shaped surface. In this way, even if the valve core 21 swings slightly when resetting, the outer surface of the seal 211 can completely seal the first port 1031 of the water channel 103, thereby improving the reliability of the closing function of the valve core 21.

[0076] In some embodiments, the outer surface of the seal 211 closing the first port 1031 is a plane, and a flange surrounding the first port 1031 is provided on the cavity wall of the valve body 10 where the first port 1031 is provided, and the seal 211 is pressed against the flange. This embodiment can be combined with a solution in which a coaxial guide hole 111 is provided on the guide column 110, and the valve core 21 is inserted into the guide hole 111. In this way, while preventing the valve core 21 from swinging, the seal 211 uses a plane to seal the first port 1031, which is also very stable and reliable.

[0077] See also Fig.10 The utility model also proposes a base station water system, including a base station and the above-mentioned control valve 300. The structure of the control valve 300 can refer to any of the above-mentioned embodiments. Since the base station water system adopts all the technical solutions of all the above-mentioned embodiments of the control valve 300, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0078] The base station includes a clean water tank 100 and a pump device 201 (a water pump or an air pump, a water pump is used as an example in the figure) connected to the clean water tank 100. The water inlet 101 of the control valve 300 is connected to a water source (e.g., a faucet), and the water outlet 102 is connected to the clean water tank 100 (specifically, it is connected to the water inlet 011 of the clean water tank 100 through a water pipe 400); when the clean water tank 100 needs to be replenished with water, negative pressure is pumped into the clean water tank 100 through the pump device 201, that is, negative pressure is pumped into the second chamber Q2 of the control valve 300 through the water outlet 102, so that the diaphragm 30 drives the pusher 40 to move into the second chamber Q2, so that the pusher 40 pushes the valve core assembly The push member 20 opens the water passage 103, so that the water inlet hole 101 and the water outlet hole 102 of the control valve 300 are connected, that is, the control valve 300 is opened; when the water replenishment of the clean water tank 100 is completed or no water replenishment is needed, the negative pressure of the clean water tank 100 is stopped by the pump device 201, and the pressure in the second chamber Q2 is restored (for example, through the groove 512), so that the diaphragm 30 drives the push member 40 to move back to the second chamber Q2 and reset, and the push member 40 no longer pushes the valve core assembly 20, and the valve core assembly 20 is restored to the initial state, and the water passage 103 is closed, so that the water inlet hole 101 and the water outlet hole 102 of the control valve 300 are not connected, that is, the control valve 300 is closed.

[0079] In other embodiments, the base station in the above-mentioned base station water system may not include a clean water tank, that is, the base station is directly connected to the pump device 201, and the water outlet 102 is directly connected to the base station. For example, when the base station needs water, negative pressure is pumped to the base station through the pump device 201. The working principles of other components are similar to the above description and will not be repeated here.

[0080] The utility model further proposes a cleaning system, which includes a cleaning robot and the above-mentioned base station water system. The specific structure of the base station water system refers to the above-mentioned embodiment. Since the cleaning system adopts all the technical solutions of all the embodiments of the above-mentioned base station water system, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the base station of the base station water system is used to provide clean water to care for the cleaning robot when in use (for example, cleaning the roller brush, rag, and mopping parts of the cleaning robot, adding clean water to the cleaning robot, draining sewage, and sucking dry garbage collected in the cleaning robot, etc.).

[0081] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A control valve, characterized in that: include: The valve body is provided with a first cavity, a water passage, a water inlet hole and a water outlet hole, wherein the water inlet hole is connected with the first cavity; A valve core assembly is movably disposed in the valve body, and in an initial state, the valve core assembly keeps closing the water passage; A deformable diaphragm, the edge of which is sealed and connected to the valve body to enclose the valve body to form a second cavity, the water outlet is connected to the second cavity, and the first cavity is connected to the second cavity through the water passage; as well as A pushing member, disposed on a side of the diaphragm facing the second cavity; The diaphragm moves toward or away from the second chamber as the pressure in the second chamber changes, so as to drive the pusher to push or not push the valve core assembly, thereby correspondingly causing the valve core assembly to open or close the water passage.

2. The control valve according to claim 1, characterized in that: The first end of the valve body is provided with an opening, the diaphragm covers the opening of the first end of the valve body, the first end of the valve body is provided with a first stop, and the edge of the diaphragm is provided with a second stop that matches the first stop; and / or, The control valve further comprises a first cover body, wherein the first cover body covers the first end of the valve body, and the edge of the diaphragm is clamped between the first cover body and the first end of the valve body.

3. The control valve according to claim 2, characterized in that: A sealing rib is provided on the first stop or the second stop or between the first stop and the second stop, and the sealing rib is clamped between the first stop and the second stop; and / or, A supporting rib is provided on the inner side of the cover plate of the first cover body or on the back side of the second stopper or between the inner side of the cover plate of the first cover body and the back side of the second stopper, and the supporting rib is clamped between the back side of the second stopper and the first cover body.

4. The control valve according to claim 2, characterized in that: The diaphragm is further provided with a third stop adjacent to and in the opposite direction of the second stop, and the inner side of the cover plate of the first cover body is correspondingly provided with a stop rib position adapted to the third stop.

5. The control valve according to claim 2, characterized in that: A cavity is formed between the side of the diaphragm facing away from the second cavity and the cover plate of the first cover body, a gap is provided between the cover frame of the first cover body and the outer wall of the valve body, and at least one groove is constructed on the inner side of the cover plate of the first cover body, and the groove connects the gap and the cavity.

6. The control valve according to claim 1, characterized in that: The pusher is provided with at least one positioning hole, and the diaphragm is provided with at least one positioning buckle, the positioning buckles correspond to the positioning holes one by one, and each positioning buckle is respectively inserted into the corresponding positioning hole and buckled on the periphery of the positioning hole; and / or, The pusher comprises a bottom plate which is in contact with the surface of the diaphragm, and a top column for driving the valve core assembly is provided on the bottom plate; and / or, The side of the pusher facing away from the diaphragm is provided with at least one reinforcing rib extending from the central area to the edge.

7. The control valve according to claim 1, characterized in that: The first chamber is provided with a first filter element and / or a second filter element located between the water inlet and the water passage, the second filter element is provided between the first filter element and the water passage, and the mesh number of the first filter element is greater than the mesh number of the second filter element.

8. The control valve according to claim 7, characterized in that: The first cavity has a first cylinder wall which is arranged around the water passage and has an opening at the top. The first filter element is a tubular sponge which is interference fit on the first cylinder wall. The second filter element has a filter screen which covers the opening at the top of the first cylinder wall.

9. The control valve according to claim 8, characterized in that The valve body includes a main body and a first shell detachably connected to the main body, the first shell and the main body enclose the first cavity, the first shell is provided with a limiting rib and a second cylinder wall with an opening at the bottom end, the second cylinder wall is interference fit on the tubular sponge, the limiting rib is interference fit in one end of the tubular sponge close to the first shell, and there is a spacing space between the limiting rib and the filter.

10. The control valve according to claim 9, characterized in that The limiting rib is provided with at least one protrusion which abuts against the filter screen, and the valve core assembly is arranged in a space surrounded by the second filter element and the first cylinder wall.

11. The control valve according to any one of claims 1 to 10, characterized in that: The valve core assembly includes a valve core and a reset elastic member, the valve core is connected to the valve body via the reset elastic member, a sealing member for closing the water passage is provided at the first end of the valve core, and the reset elastic member applies a force to the valve core to move the valve core in a direction of closing the water passage.

12. The control valve according to claim 11, characterized in that The resetting elastic member is a compression spring, the valve body is provided with a blind hole matching the outer diameter of the compression spring, the bottom surface of the blind hole is provided with a guide column matching the inner diameter of the compression spring, and the compression spring is sleeved on the guide column; and / or, The valve core assembly is arranged in the first cavity, the sealing member closes the first port of the water passage close to the first cavity, and the end of the pusher close to the first cavity is inserted into the water passage and is adjacent to or connected to the sealing member.

13. The control valve according to claim 12, characterized in that The guide column is provided with a coaxial guide hole, and the valve core is inserted into the guide hole.

14. The control valve according to claim 12, characterized in that The outer surface of the sealing member closing the first port is an arc-shaped surface; or, The outer surface of the sealing member closing the first port is a plane, the cavity wall of the valve body where the first port is arranged is provided with a flange surrounding the first port, and the sealing member is pressed against the flange.

15. A base station water system, comprising a base station, wherein the base station comprises a clean water tank and a pump device connected to the clean water tank, characterized in that: It also comprises the control valve according to any one of claims 1 to 14, wherein the water inlet of the control valve is connected to a water source, and the water outlet is connected to the clean water tank; The pump device applies negative pressure to the clean water tank, so that the valve core opens the water passage; The pump device stops pumping negative pressure to the clean water tank, causing the valve core to close the water passage.

16. A cleaning system, comprising a cleaning robot, characterized in that: It also includes the base station water system of claim 15, wherein the base station of the base station water system provides clean water to care for the cleaning robot.

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