Liquid dispensing controller and liquid mixing and dispensing device

Abstract

The present invention relates to a liquid dispensing controller and a liquid mixing and dispensing device. The liquid dispensing controller is provided with a body, a control chamber and a dispensing chamber; a piston is arranged in the body and can move between the dispensing chamber and the control chamber. When the piston is in the first position, the piston can separate the dispensing chamber from the control chamber, and a first inlet can communicate with the dispensing chamber. By using the first inlet, liquid can be dispensed into the dispensing chamber, and a fixed amount of a first liquid can be dispensed into the dispensing chamber separated from the control chamber; then, by using the piston to move in the dispensing chamber, when the piston is in the second position, the dispensing chamber communicates with the control chamber, and an outlet communicates with the control chamber or the dispensing chamber. The first liquid can enter the control chamber to be mixed with a second liquid, and the first liquid or the mixed liquid can be dispensed through the outlet, thereby realizing the accurate quantitative dispensing of the first liquid, or realizing the dispensing after the fixed amount of the first liquid is mixed with the second liquid in the control chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid dispensing, and particularly to a liquid dispensing controller and a liquid mixing and dispensing device. Background Art

[0002] In many current scenarios of liquid dispensing, users need to manually operate to control the dosage of liquid dispensing. For example, users estimate the required liquid dosage based on experience, and then load and dispense the estimated dosage of liquid, such as cleaning liquid or medicinal liquid. In practical applications, usually, additive liquids such as cleaning liquid and medicinal liquid need to be mixed with water. Therefore, two or more liquids need to be mixed. If the mixing ratio of two or more liquids is inappropriate, for example, the amount of additive liquids such as cleaning liquid and medicinal liquid is too small, it may affect the use effect of the mixed liquid, or if the amount of additive liquids such as cleaning liquid and medicinal liquid is too large, it will cause waste of the additive liquids such as cleaning liquid and medicinal liquid. Therefore, it is necessary to achieve relatively accurate quantitative liquid dispensing. Summary of the Invention

[0003] The purpose of the present invention is to provide a liquid dispensing controller and a liquid mixing and dispensing device to optimize the structure of the liquid dispensing scheme in related technologies and achieve relatively accurate quantitative liquid dispensing.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] According to one aspect of the present invention, the present invention provides a liquid dispensing controller, which includes: a body, which forms the housing of the liquid dispensing controller, and has a control cavity and a dispensing cavity therein; a first inlet, which can communicate with the dispensing cavity; an outlet, which communicates with the control cavity or the dispensing cavity; a piston, which is arranged in the body and can move between the dispensing cavity and the control cavity; wherein, when the piston is in the first position, the piston can separate the dispensing cavity from the control cavity; when the piston is in the second position, the dispensing cavity communicates with the control cavity.

[0006] In some embodiments of the present application, a second inlet, which communicates with the dispensing cavity; wherein, when the piston is in the first position, the second inlet is separated from the dispensing cavity; when the piston is in the second position, the second inlet communicates with the dispensing cavity.

[0007] In some embodiments of the present application, one end of the piston away from the second inlet is the first end, and one end of the piston close to the second inlet is the second end. A sealing portion protrudes from the second end of the piston. When the piston is in the first position, the first end of the piston can seal the first end of the dosing chamber, so that the dosing chamber is hermetically isolated from the control chamber; and the second end of the piston is in sealing contact with the second inlet to block the second inlet. When the piston is in the second position, the first end of the piston can be separated from the first end of the dosing chamber, so that the dosing chamber is communicated with the control chamber, and the second end of the piston is separated from the second inlet to open the second inlet.

[0008] In some embodiments of the present application, it further includes: a second inlet capable of communicating with the dosing chamber; a plugging member provided at the second inlet. The first end of the plugging member movably penetrates through the second inlet, and the second end of the plugging member is provided in the dosing chamber. When an external force acts on the first end of the plugging member in a direction towards its second end, the plugging member opens the second inlet, so that the second inlet is communicated with the dosing chamber; when the plugging member is not subjected to the external force, the plugging member blocks the second inlet, so that the second inlet is separated from the dosing chamber.

[0009] In some embodiments of the present application, a second joint is provided at the second inlet. The second joint can communicate with the dosing chamber through the second inlet. One end of the piston away from the second inlet is the first end, and one end of the piston close to the second inlet is the second end. A chute is recessed in the second end of the piston. The second end of the plugging member movably extends into the chute. An elastic member is provided in the chute. The second end of the plugging member is connected to the first end of the elastic member, and the second end of the elastic member is connected to the inner wall of the chute. The elastic member is used to drive the plugging member to move in a direction away from the second end of the elastic member, so that the plugging member blocks the second inlet. When an external force acts on the first end of the plugging member in a direction towards its second end, the plugging member moves towards the chute to open the second inlet. When the plugging member is not subjected to the external force, the plugging member moves towards the second inlet under the elastic force of the elastic member, so that the plugging member can block the second inlet.

[0010] In some embodiments of the present application, a third sealing ring is sleeved on the outer peripheral wall of the plugging member near the inner wall of the second inlet. The third sealing ring is used to seal the second inlet when no external force acts on the first end of the plugging member. When the piston is in the first position and no external force acts on the first end of the plugging member, the first end of the piston can plug the first end of the dosing chamber, so that the dosing chamber is sealed and isolated from the control chamber, and the inner wall of the dosing chamber at the second inlet abuts against the third sealing ring, so that the third sealing ring seals the second inlet. When the piston is in the second position and no external force acts on the first end of the plugging member, the first end of the piston can be separated from the first end of the dosing chamber, so that the dosing chamber is communicated with the control chamber, and the second end of the plugging member is subjected to the elastic force of the elastic member, so that the first end of the plugging member plugs the second inlet. When the piston is in the second position and an external force acts on the first end of the plugging member, the first end of the piston can be separated from the first end of the dosing chamber, so that the dosing chamber is communicated with the control chamber, and the plugging member pushes the elastic member and moves in the direction of the chute to open the second inlet.

[0011] In some embodiments of the present application, a sealing ring limiting portion is provided on the outer peripheral wall of the side of the plugging member where the third sealing ring is provided and facing away from the inner wall of the second inlet. The sealing ring limiting portion is used to limit the third sealing ring. A limiting surface that protrudes outward or inward in a circumferential direction is provided on the outer peripheral wall of the sealing ring limiting portion, and the side of the third sealing ring facing away from the inner wall of the second inlet abuts against the limiting surface.

[0012] In some embodiments of the present application, it further includes: a first valve body for plugging the first inlet; wherein, when the piston is in the first position, the piston can push the first valve body to open the first inlet, and when the piston is in the second position, the piston is separated from the first valve body, so that the first valve body plugs the first inlet.

[0013] In some embodiments of the present application, a first connector is provided at the first inlet, and the first connector communicates with the dosing chamber through the first inlet; the first valve body includes a plug and a return spring; the plug is movably disposed within the first connector and is capable of moving within the first connector to approach or move away from the first inlet; the return spring is disposed within the first connector and is connected to the plug, and the return spring is configured to drive the plug to move in a direction approaching the first inlet to block the first inlet; a protrusion is convexly provided at an end of the plug facing the first inlet; when the plug blocks the first inlet, at least a part of the protrusion can extend into the dosing chamber; and when the piston is in the first position, the piston can push the protrusion so that the plug moves away from the first inlet and opens the first inlet.

[0014] In some embodiments of the present application, the first valve body further includes a guide ring, the guide ring is disposed within the first connector and on a side of the plug away from the first inlet; a guide hole extending along the axial direction of the first connector is provided on the guide ring; an axially extending guide post is convexly provided on a side of the plug away from the first inlet, and the guide post is movably inserted into the guide hole and can axially move along the guide hole.

[0015] In some embodiments of the present application, the return spring is disposed between the plug and the guide ring, the return spring is sleeved on the guide post, one end of the return spring abuts against the plug, and the other end of the return spring abuts against the guide ring.

[0016] In some embodiments of the present application, the first valve body further includes a first sealing ring; a first sealing ring groove is recessed on the circumferential wall of the plug, and the first sealing ring is sleeved at the first sealing ring groove and is arranged around the circumferential wall of the plug.

[0017] In some embodiments of the present application, a second sealing ring groove is provided on the outer circumferential wall of the first end of the piston, and the second sealing ring is sleeved at the second sealing ring groove; when the piston is in the first position, the second sealing ring is clamped between the inner wall of the first end of the dosing chamber and the outer wall of the first end of the piston to seal the first end of the dosing chamber.

[0018] In some embodiments of the present application, the chamber wall of the dosing chamber extends towards the inside of the control chamber and forms an opening at an end facing the control chamber, a piston limiting portion is convexly provided circumferentially on the first end of the piston, and when the piston moves to the first position, the piston limiting portion can abut against the end face of the opening to limit the piston from continuing to move towards the dosing chamber.

[0019] In some embodiments of the present application, a guiding groove extending axially is provided on the cavity wall of the dispensing cavity. A guiding wall is protruded on the circumferential side of the piston and is matched with the guiding groove. The guiding wall extends along the axial direction of the dispensing cavity, and the guiding wall is slidably connected in the guiding groove so that the piston can move axially along the dispensing cavity.

[0020] In some embodiments of the present application, it further includes: a driving assembly provided on the body, the driving assembly is connected to the piston and is used to drive the piston to move in the body.

[0021] In some embodiments of the present application, the driving assembly includes a driving motor and a screw rod; a cover plate for blocking the control cavity is provided at one end of the control cavity away from the dispensing cavity, and the driving motor is provided on the cover plate; a threaded hole extending axially is opened on the end face of the first end of the piston; one end of the screw rod is connected to the output end of the driving motor, a through hole is provided on the cover plate, and the other end of the screw rod sequentially passes through the through hole and the control cavity and is threadedly connected in the threaded hole; when the driving motor controls the screw rod to rotate forward or backward, the screw rod can drive the piston to move along the inner wall of the dispensing cavity.

[0022] In some embodiments of the present application, a third joint is provided at the outlet, and the third joint and the outlet are arranged on opposite sides.

[0023] According to another aspect of the present invention, the present invention provides a liquid mixing and dispensing device, which includes a liquid dispensing controller, a first liquid container, a second liquid container and a liquid mixing container; the liquid dispensing controller adopts the above-mentioned liquid dispensing controller; the first liquid container is connected to the first inlet, and the first liquid container is used to store the first liquid; the second liquid container is connected to the second inlet, and the second liquid container is used to store the second liquid; the liquid mixing container is connected to the outlet, and the liquid mixing container is used to store the mixed liquid.

[0024] In some embodiments of the present application, a first liquid level sensor is provided in the first liquid container, and a second liquid level sensor is provided in the second liquid container; and / or, a sealing film is provided at the port of the first liquid container connected to the first inlet; a first joint is provided at the first inlet, and a sharp part is provided at the port of the first joint connected to the first liquid container; when the first liquid container is connected to the first inlet, the sharp part can pierce the sealing film so that the first liquid container is communicated with the first inlet.

[0025] It can be seen from the above technical solutions that the embodiments of the present invention have at least the following advantages and positive effects:

[0026] In the liquid dispensing controller according to an embodiment of the present invention, a control chamber and a dispensing chamber are provided inside the liquid dispensing controller; a piston is disposed within the body and is capable of moving between the dispensing chamber and the control chamber. When the piston is in the first position, the piston can separate the dispensing chamber from the control chamber. The first inlet can communicate with the dispensing chamber, and liquid can be dispensed into the dispensing chamber through the first inlet, enabling a quantitative amount of the first liquid to be dispensed into the dispensing chamber separated from the control chamber. Then, by using the piston to move within the dispensing chamber, when the piston is in the second position, the dispensing chamber communicates with the control chamber, and the outlet communicates with the control chamber or the dispensing chamber. The first liquid can enter the control chamber to be mixed with the second liquid, and the first liquid or the mixed liquid can be dispensed through the outlet, thereby achieving the accurate quantitative dispensing of the first liquid, or enabling the quantitative first liquid and the second liquid to be mixed in the control chamber and then dispensed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of a liquid dispensing controller according to an embodiment of the present invention.

[0028] Figure 2 is Figure 1 an exploded schematic diagram of the liquid dispensing controller in

[0029] Figure 3 is Figure 2 a schematic structural diagram of the first valve body in

[0030] Figure 4 is Figure 1 a cross-sectional view of the first valve body in

[0031] Figure 5 is Figure 2 a schematic structural diagram of the piston, the second seal ring, and the sealing cap in

[0032] Figure 6 is Figure 1 a cross-sectional view of the piston, the second seal ring, and the sealing cap in

[0033] Figure 7 is Figure 1 a schematic structural diagram in another state.

[0034] Figure 8 is Figure 1 a sectional view taken along the line A-A in

[0035] Figure 9 is Figure 2 a schematic structural diagram of the drive motor and the screw in

[0036] Figure 10 is a schematic structural diagram of a liquid dispensing controller according to another embodiment of the present invention.

[0037] Figure 11 is Figure 10Schematic structural diagram of the middle piston and the plugging member.

[0038] Figure 12 is Figure 10 Schematic structural diagram in another state.

[0039] Figure 13 Schematic structural diagram of the liquid mixing and dispensing device according to an embodiment of the present invention.

[0040] The description of the reference numerals is as follows:

[0041] 100, liquid dispensing controller; 1, main body; 11, control chamber; 12, dispensing chamber; 121, guide groove; 122, guide rib; 13, first joint; 131, first inlet; 14, second joint; 141, second inlet; 15, third joint; 151, outlet; 16, cover plate; 161, sleeve part; 162, fixing column; 17, motor housing; 171, fixing hole.

[0042] 2, first valve body; 21, plug; 211, first sealing ring groove; 212, guide post; 213, convex part; 22, first sealing ring; 23, guide ring; 231, guide hole; 232, liquid passing hole; 233, sharp part; 24, return spring.

[0043] 3, piston; 31, guide wall; 311, guide inclined surface; 32, second sealing ring groove; 33, second sealing ring; 34, plugging part; 35, sealing cap; 36, piston limiting part; 37, threaded hole; 38, chute.

[0044] 4, driving assembly; 41, driving motor; 42, screw.

[0045] 5, plugging member; 51, third sealing ring; 52, sealing ring limiting part.

[0046] 6, elastic member.

[0047] 200, first liquid container; 201, first liquid level sensor; 300, second liquid container; 301, second liquid level sensor; 400, liquid mixing container. Detailed implementation manners

[0048] Typical implementation manners reflecting the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different implementation manners, all of which do not depart from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present invention.

[0049] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0051] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0052] Please refer to Figure 1 and Figure 2 As shown, the liquid dispensing controller 100 provided by the embodiment of the present invention mainly includes a body 1, a first valve body 2, a piston 3 and a driving assembly 4.

[0053] Among them, the body 1 is a closed structure with a hollow interior. A control chamber 11 is formed inside the body 1. The control chamber 11 can be used for mixing different liquids and can be used for storing the dispensed and mixed liquids.

[0054] A dispensing chamber 12 is also formed inside the body 1. The first end in the axial direction of the dispensing chamber 12 is in communication with the control chamber 11, and the second end and the periphery of the dispensing chamber 12 are isolated from the control chamber 11. The dispensing chamber 12 is used for sequentially dispensing different liquids into the dispensing chamber 12 and enabling the different liquids to be mixed in the control chamber 11 in proportion.

[0055] The main body 1 is provided with a first inlet 131 and an outlet 151. The first inlet 131 can communicate with the dosing chamber 12, and the outlet 151 communicates with the control chamber 11. Specifically, the piston 3 is arranged inside the main body 1 and can move between the dosing chamber 12 and the control chamber 11. When the piston 3 is in the first position, the piston 3 can separate the dosing chamber 12 from the control chamber 11. The first inlet 131 can communicate with the dosing chamber 12, and the first liquid can be dosed into the dosing chamber 12 through the first inlet 131, so that a fixed amount of the first liquid can be dosed into the dosing chamber 12 separated from the control chamber 11. Then, by using the piston 3 to move inside the dosing chamber 12, when the piston 3 is in the second position, the dosing chamber 12 communicates with the control chamber 11, and the outlet 151 communicates with the control chamber 11. The first liquid can enter the control chamber 11 to be mixed with the second liquid, and the first liquid or the mixed liquid can be dosed through the outlet 151, thus realizing the accurate dosing of the first liquid, or realizing the dosing after the fixed amount of the first liquid is mixed with the second liquid in the control chamber 11.

[0056] In some embodiments, the outlet 151 can also communicate with the dosing chamber 12, and the first liquid or the mixed liquid can be dosed through the outlet 151.

[0057] In some embodiments, the main body 1 is provided with a second inlet 141, and the second inlet 141 communicates with the dosing chamber 12; wherein, when the piston 3 is in the first position, the second inlet 141 is separated from the dosing chamber 12, and only the first inlet 131 is opened, and the first liquid enters the dosing chamber 12 through the first inlet 131; when the piston 3 is in the second position, the second inlet communicates with the dosing chamber 12, and the second liquid enters the dosing chamber 12 through the second inlet and can be mixed with the first liquid.

[0058] In the existing equipment for mixing two or more liquids in proportion, if a flow meter is used to control the volume of the added liquid and an electromagnetic valve is used to control the opening and closing of the liquid path, two flow meters and two electromagnetic valves are required to cooperate to mix two liquids in proportion, the overall structure is relatively complex, and the cost is relatively high.

[0059] The liquid dosing controller 100 of this solution controls the communication state between the dosing chamber 12 and the control chamber 11 by using the piston 3, and is provided with the first inlet 131, the second inlet 141 and the outlet 151, so that the liquid can be dosed into the control chamber 11 quantitatively, facilitating the mixing of two or more liquids. Without the cooperation of a flow meter and an electromagnetic valve, the proportional mixing of different liquids can be realized, the overall structure is relatively simple, and it is beneficial to reduce the cost of the mixing equipment.

[0060] In some embodiments, please refer to Figures 1 to 7, one end of the piston 3 away from the second inlet 141 is the first end, and one end of the piston 3 close to the second inlet 141 is the second end. A blocking portion 34 protrudes from the second end of the piston 3. When the piston 3 moves to the first position, the first end of the piston 3 can block the first end of the dosing chamber 12, so that the dosing chamber 12 is hermetically isolated from the control chamber 11, and the second end of the piston 3 is in sealing contact with the second inlet 141 to block the second inlet 141; when the piston 3 moves to the second position, the first end of the piston 3 can be separated from the first end of the dosing chamber 12, so that the dosing chamber 12 communicates with the control chamber 11, and the piston 3 is separated from the second inlet 141 to open the second inlet 141.

[0061] In some embodiments, a sealing cap 35 is sleeved on the blocking portion 34. The sealing cap 35 can be in sealing contact with the second inlet 141 to block the second inlet 141. When the second end of the piston 3 is in contact with the second inlet 141, that is, when the piston 3 is in the first position, the sealing cap 35 can abut against the second inlet 141, thereby blocking the second inlet 141. At this time, the second inlet 141 is separated from the dosing chamber 12.

[0062] Please refer to Figures 1 to 7 , in some embodiments, a second sealing ring groove 32 is provided on the outer peripheral wall of the first end of the piston 3, and a second sealing ring 33 is sleeved at the second sealing ring groove 32. When the piston is in the first position, the first end of the piston 3 blocks the first end of the dosing chamber 12, and the second sealing ring 33 can be clamped between the outer wall of the first end of the piston 3 and the inner wall of the first end of the dosing chamber 12, thereby sealing the gap between the outer wall of the piston 3 and the inner wall of the dosing chamber 12, and further sealing the first end of the dosing chamber 12 to isolate the dosing chamber 12 from the control chamber 11, as Figure 1 shown in the state.

[0063] When the second end of the piston 3 is in contact with the second inlet 141, the blocking portion 34 can abut against the second inlet 141, thereby blocking the second inlet 141. At this time, the second sealing ring 33 is clamped between the inner wall of the first end of the dosing chamber 12 and the outer wall of the first end of the piston 3, sealing and blocking the first end of the dosing chamber 12, as Figure 7 shown in the state.

[0064] It should be noted that the diameter of the first end of the piston 3 is larger than the diameter of the second end of the piston 3. Therefore, when the first end of the piston 3 blocks the first end of the dosing chamber 12, there is enough space between the second end of the piston 3 and the inner wall of the dosing chamber 12 for the liquid to enter the dosing chamber 12 through the first inlet 131.

[0065] Please refer to Figures 1 to 7, in some embodiments, the cavity wall of the dosing cavity 12 extends towards the inside of the control cavity 11 and forms an opening at one end facing the control cavity 11. A piston limiting portion 36 is circumferentially protruded on the outer peripheral wall of the first end of the piston 3. When the piston 3 moves to the first position, the piston limiting portion 36 can abut against the end face of the opening to limit the piston 3 from continuing to move towards the dosing cavity 12, so as to limit the distance that the piston 3 moves towards the second end of the dosing cavity 12. At this time, the sealing cap 35 abuts against the second inlet 141 and seals the second inlet 141.

[0066] It should be noted that the piston limiting portion 36 can be in a ring structure or can be only one or more arc structures.

[0067] Please refer to Figure 1 and Figure 2 As shown, a first joint 13 is protruded on the outer wall of the main body 1. The first joint 13 is integrally formed on the outer wall of the main body 1. A first inlet 131 communicating with the dosing cavity 12 is provided in the first joint 13. The first joint 13 is used to externally connect a liquid tank, so that the liquid in the liquid tank can enter the dosing cavity 12 through the first inlet 131, and then enter the control cavity 11 through the dosing cavity 12 for mixing.

[0068] In some embodiments, the first inlet 131 is located on the inner wall of the dosing cavity 12. The internal space of the first joint 13 communicates with the dosing cavity 12 through the first inlet 131. Therefore, when the liquid tank is connected to the first joint 13, the liquid in the liquid tank can enter the dosing cavity 12 in sequence through the inside of the first joint 13 and the first inlet 131.

[0069] Please refer to Figure 1 and Figure 2 As shown, a second joint 14 is protruded on the outer wall of the main body 1. The second joint 14 is integrally formed on the outer wall of the main body 1. A second inlet 141 communicating with the dosing cavity 12 is provided in the second joint 14. The second joint 14 is used to externally connect another liquid tank, so that the liquid in the other liquid tank can enter the dosing cavity 12 through the second inlet 141, and then enter the control cavity 11 through the dosing cavity 12 for preliminary mixing.

[0070] It should be noted that by separately controlling the liquid flow rates of the first inlet 131 and the second inlet 141 entering the dosing cavity 12, two different liquids can be mixed in a preset ratio.

[0071] In some embodiments, the second inlet 141 is located on the inner wall of the dosing cavity 12. The internal space of the second joint 14 communicates with the dosing cavity 12 through the second inlet 141. Therefore, when the liquid tank is connected to the second joint 14, the liquid in the liquid tank can enter the dosing cavity 12 in sequence through the inside of the second joint 14 and the second inlet 141.

[0072] It should be noted that in other embodiments, only the first joint 13 may be provided on the body 1, and the second joint 14 may not be provided. At this time, the liquid dispensing controller 100 can be used for dispensing a single type of liquid, or for dispensing different types of liquids sequentially through the first joint 13 and the first inlet 131, and thus a proportional mixing scheme for two or more different liquids can also be achieved.

[0073] Please refer to Figure 1 and Figure 2 As shown, a third joint 15 is convexly provided on the outer wall of the body 1, and the third joint 15 is integrally formed on the outer wall of the body 1. An outlet 151 communicating with the control chamber 11 is provided in the third joint 15. The third joint 15 is used for externally connecting to a mixing tank, so that the liquid in the liquid tank can leave the control chamber 11 through the outlet 151 and enter the mixing tank, and thus two different liquids can be further mixed or stored in the mixing tank.

[0074] In some embodiments, the outlet 151 is located on the inner wall of the control chamber 11, and the internal space of the third joint 15 communicates with the control chamber 11 through the outlet 151. Therefore, when the mixing tank is connected to the third joint 15, the two different liquids in the control chamber 11 can sequentially enter the mixing tank through the outlet 151 and the interior of the third joint 15.

[0075] Please refer to Figures 1 to 7 , the first end of the piston 3 movably extends into the dispensing chamber 12, and the piston 3 can move along the axial direction of the dispensing chamber 12. At the same time, the second joint 14 is located on the outer wall of the second end of the dispensing chamber 12, that is, the second inlet 141 is located on the end wall of the second end of the dispensing chamber 12. The first joint 13 is located on the outer wall of the circumferential direction of the dispensing chamber 12, that is, the first inlet 131 is located on the outer wall of the circumferential direction of the dispensing chamber 12.

[0076] Please refer to Figure 1 , when the piston 3 moves along the axial direction of the dispensing chamber 12 and moves to the second end of the dispensing chamber 12, at this time the piston 3 is in the first position, the second end of the piston 3 can abut against the second inlet 141, thereby blocking the second inlet 141, and the second inlet 141 is separated from the dispensing chamber 12, and at this time the liquid cannot enter the dispensing chamber 12 from the second inlet 141; the first end of the piston 3 can block the first end of the dispensing chamber 12, and at this time the dispensing chamber 12 is sealed and isolated from the control chamber 11. At the same time, the second end of the piston 3 can push the first valve body 2 to open the first inlet 131, so that the liquid can enter the dispensing chamber 12 from the first inlet 131 and fill the entire dispensing chamber 12.

[0077] It should be noted that since the capacity in the dispensing chamber 12 is fixed at this time, the quantitative dispensing of the first liquid can be achieved through the first inlet 131.

[0078] Please refer toFigure 7 When the piston 3 moves in the direction of the first end of the dosing chamber 12, the piston 3 is at the second position at this time. The second end of the piston 3 can be separated from the first valve body 2, so that the first valve body 2 can re-block the first inlet 131 under the action of the return spring 24. At the same time, the first end of the piston 3 can be separated from the first end of the dosing chamber 12, so that the dosing chamber 12 is communicated with the control chamber 11, and the liquid in the dosing chamber 12 can enter the control chamber 11. And the second end of the piston 3 can be separated from the second inlet 141 to open the second inlet 141. At this time, the second inlet 141 is communicated with the dosing chamber 12, and the second liquid can enter the dosing chamber 12 through the second inlet 141 and flow from the first end of the dosing chamber 12 to the control chamber 11 to be mixed with the first liquid in the control chamber 11.

[0079] It should be noted that since the caliber of the second inlet 141 is fixed, by controlling the opening time of the second inlet 141, the amount of the second liquid entering the control chamber 11 can be controlled. After a specific time, the piston 3 is driven again to block the second inlet 141, close the second inlet 141 and the dosing chamber 12, so that the first liquid entering the control chamber 11 is mixed with the first liquid dosed in proportion, achieving the effect of mixing the two liquids in a specific proportion.

[0080] In some embodiments, the chamber wall of the dosing chamber 12 extends from one end wall of the control chamber 11 towards the other end of the control chamber 11 and overhangs into the control chamber 11. The overhanging end of the chamber wall of the dosing chamber 12 is the first end of the dosing chamber 12, and the first end of the dosing chamber 12 is communicated with the control chamber 11. The end of the chamber wall of the dosing chamber 12 connected to the end wall of the control chamber 11 is the second end of the dosing chamber 12, and the second end of the dosing chamber 12 is isolated from the control chamber 11. Therefore, the dosing chamber 12 can only be communicated with the control chamber 11 through the port at its first end.

[0081] Please refer to Figures 1 to 4 The liquid dosing controller 100 further includes a first valve body 2 for blocking the first inlet 131. Without other external forces, the first valve body 2 can automatically close the first inlet 131. When the piston 3 is in the first position, the piston 3 can push the first valve body 2 to open the first inlet 131. When the piston 3 is in the second position, the piston 3 is separated from the first valve body 2, so that the first valve body 2 blocks the first inlet 131.

[0082] In some embodiments, the first valve body 2 is arranged in the first joint 13, and the first joint 13 is communicated with the dosing chamber 12 through the first inlet 131.

[0083] In some embodiments, the first valve body 2 includes a plug 21 and a return spring 24. Among them, the plug 21 is movably arranged inside the first joint 13, and the plug 21 can move along the axial direction of the first joint 13, and thus approach or move away from the first inlet 131. When the plug 21 moves in the direction approaching the first inlet 131 and abuts against the first inlet 131, the plug 21 can block the first inlet 131, and at this time, the liquid cannot enter the dosing chamber 12 through the first joint 13 and the first inlet 131. When the plug 21 moves in the direction away from the first inlet 131 and separates from the first inlet 131, the first inlet 131 is opened, and the liquid can enter the dosing chamber 12 through the first joint 13 and the first inlet 131.

[0084] The return spring 24 is arranged inside the first joint 13 and is connected to the plug 21. The return spring 24 is used to drive the plug 21 to move in the direction approaching the first inlet 131 to block the first inlet 131.

[0085] In some embodiments, a protrusion 213 protrudes from the end of the plug 21 facing the first inlet 131, and the protrusion 213 protrudes and extends along the axial direction of the first joint 13. And when the plug 21 blocks the first inlet 131, at least a part of the protrusion 213 can extend into the dosing chamber 12. Therefore, when the piston 3 is in the first position, the protrusion 213 can be pushed from the inside of the dosing chamber 12, and then the protrusion 213 can be withdrawn from the dosing chamber 12, and the plug 21 can be moved in the direction away from the first inlet 131, so that the first inlet 131 is opened and the return spring 24 is compressed.

[0086] Please refer to Figures 1 to 4 , the first sealing ring 22 is annular and sleeved on the outer peripheral wall of the plug 21, that is, the first sealing ring 22 is arranged around the outer peripheral wall of the plug 21. The first sealing ring 22 is made of a sealing material with a certain elasticity. When the plug 21 abuts against the first inlet 131, the first sealing ring 22 can be clamped and fixed between the outer wall of the plug 21 and the inner wall of the first joint 13, and then the gap between the outer wall of the plug 21 and the inner wall of the first joint 13 can be sealed through the first sealing ring 22 to realize the sealing of the first inlet 131.

[0087] In some embodiments, a first sealing ring groove 211 is recessed on the peripheral wall of the plug 21, and the first sealing ring 22 is sleeved at the first sealing ring groove 211, so that the first sealing ring 22 can be stably sleeved on the outer peripheral wall of the plug 21, preventing the first sealing ring 22 from moving on the plug 21 and ensuring the sealing performance between the outer wall and the inner wall of the first joint 13.

[0088] Please refer to Figures 1 to 4, the first valve body further includes a guide ring 23. The guide ring 23 is disposed inside the first joint 13. The guide ring 23 is disposed on a side of the plug 21 away from the first inlet 131. The guide ring 23 is used to guide the axial movement of the plug 21. Specifically, a guide hole 231 extending along the axial direction of the first joint 13 is provided on the guide ring 23, that is, the guide hole 231 penetrates the guide ring 23 along the axial direction of the first joint 13. At the same time, a guide post 212 protrudes from a side of the plug 21 away from the first inlet 131, that is, the guide post 212 is disposed on a side of the plug 21 close to the guide ring 23. The guide post 212 extends along the axial direction of the first joint 13, and the guide post 212 is movably inserted into the guide hole 231. Therefore, the guide post 212 can axially move along the guide hole 231, and further the plug 21 can axially move along the first joint 13.

[0089] In some embodiments, the guide ring 23 is fixed inside the first joint 13 by an interference fit. The outer peripheral wall of the guide ring 23 abuts against the inner wall of the first joint 13 so that the guide ring 23 can be fixedly installed inside the first joint 13.

[0090] In some embodiments, a liquid passing hole 232 is provided on the guide ring 23. The liquid passing hole 232 communicates with both sides of the guide ring 23 in the axial direction. The liquid passing hole 232 is used for liquid to flow through. Therefore, when the liquid tank is connected to the first joint 13, when the liquid of the liquid tank enters the first joint 13, the liquid can flow to the first inlet 131 after passing through the liquid passing hole 232 on the guide ring 23.

[0091] It should be noted that the liquid passing hole 232 may extend along the axial direction of the guide ring 23 or may not extend along the axial direction of the guide ring 23, and no limitation is made here. The number of the liquid passing holes 232 can be set to one or more, and no limitation is made here either.

[0092] In some embodiments, a sharp portion 233 protrudes from the outer end of the guide ring 23, that is, a sharp portion 233 is provided at an end of the guide ring 23 away from the plug 21. The sharp portion 233 protrudes from the outer end face of the first joint 13 and extends outward. A sealing film is provided at the interface of part of the liquid tanks. When the liquid tank is connected to the first joint 13, the sharp portion 233 can pierce the sealing film of the liquid tank, and further connect the inside of the liquid tank to the first joint 13, so as to connect the liquid tank to the first inlet 131.

[0093] In some embodiments, the sharp portion 233 is provided at the axis of the guide ring 23. At this time, the guide hole 231 axially penetrates the sharp portion 233. Therefore, the guide post 212 of the plug 21 can axially move in the guide hole 231 inside the sharp portion 233.

[0094] Please refer to Figures 1 to 4, in some embodiments, there is a gap between the guiding ring 23 and the plug 21, and the return spring 24 is disposed within the gap between the guiding ring 23 and the plug 21. At this time, the return spring 24 is a compression spring. One end of the return spring 24 abuts against the plug 21, and the other end of the return spring 24 abuts against the guiding ring 23. Therefore, the elastic force of the return spring 24 can drive the plug 21 to automatically move towards the side away from the guiding ring 23, that is, drive the plug 21 to automatically move towards the side close to the first inlet 131. And when the plug 21 moves towards the side away from the first inlet 131, the plug 21 gradually approaches the guiding ring 23, and the return spring 24 can be further compressed.

[0095] In some embodiments, the return spring 24 is sleeved on the guiding post 212. Therefore, the return spring 24 can be axially compressed or axially extended along the guiding post 212, thereby improving the stability of the axial expansion and contraction of the return spring 24.

[0096] It should be noted that, in some other embodiments, the return spring 24 can also adopt a tension spring structure, and the tension of the tension spring is used to drive the plug 21 to automatically move towards the direction close to the first inlet 131.

[0097] Please refer to Figures 1 to 7 , in some embodiments, a guiding groove 121 extending axially is provided on the wall of the delivery cavity 12. A guiding wall 31 is convexly provided on the circumferential side of the piston 3 and is matched with the guiding groove 121. The guiding wall 31 extends along the axial direction of the delivery cavity 12, and the guiding wall 31 is slidably connected in the guiding groove 121. The piston 3 is circumferentially limited by the guiding groove 121, so that the piston 3 can move axially along the delivery cavity 12 and prevent the piston 3 from rotating circumferentially relative to the delivery cavity 12.

[0098] In some embodiments, two guiding walls 31 are provided on the circumferential side of the piston 3, and the two guiding walls 31 are symmetrically provided on the circumferential side of the piston 3. Correspondingly, two guiding grooves 121 are provided on the wall of the delivery cavity 12, and the two guiding grooves 121 are symmetrically provided on the wall of the delivery cavity 12. The two guiding grooves 121 are slidably matched with the two guiding walls 31 one by one, so that the piston 3 can stably move axially along the delivery cavity 12.

[0099] Please refer to Figures 1 to 8 , in some embodiments, guiding ribs 122 are respectively provided on both sides of the guiding groove 121 on the inner circumferential wall of the delivery cavity 12. The guiding ribs 122 extend along the axial direction of the delivery cavity 12, and the guiding groove 121 is formed between the two guiding ribs 122, that is, each guiding groove 121 can be formed by two guiding ribs 122 arranged at intervals. Therefore, each guiding wall 31 of the piston 3 can be clamped between the two guiding ribs 122 and move axially.

[0100] Please refer to Figure 1 andFigure 7 , in some embodiments, the first inlet 131 is opened on the bottom surface of the guide groove 121, that is, the first inlet 131 communicates with the guide groove 121, and further communicates with the feeding cavity 12. The convex portion 213 of the plug 21 can extend into and be arranged in the guide groove 121. When the piston 3 moves axially and the second end of the piston 3 abuts against the second inlet 141, the end portion of the guide wall 31 near the second end can abut against the convex portion 213, and then the convex portion 213 withdraws from the guide groove 121, driving the plug 21 to move axially outward along the first joint 13, so that the first inlet 131 is opened, as Figure 1 shown in the state. When the piston 3 moves axially in the reverse direction, the second end of the piston 3 is separated from the second inlet 141, and the end portion of the guide wall 31 near the second end can be separated from the convex portion 213. The plug 21 can re-seal the first inlet 131 under the action of the return spring 24, and the convex portion 213 can re-enter the guide groove 121, as Figure 7 shown in the state.

[0101] Please refer to Figures 1 to 7 , in some embodiments, the end portion of the guide wall 31 near the second end of the piston 3 is provided with a guide inclined surface 311, which is used to contact the convex portion 213, so that the convex portion 213 can be smoothly extruded out of the guide groove 121.

[0102] Please refer to Figures 1 to 9 , in some embodiments, the liquid feeding controller 100 further includes a driving assembly 4. The driving assembly 4 is arranged on the main body 1 and is used to be connected to the piston 3. The driving assembly 4 is used to drive the piston 3 to move along the axial direction of the feeding cavity 12, so that the piston 3 moves along the axial direction of the feeding cavity 12 towards the first end or the second end of the feeding cavity 12.

[0103] Please refer to Figures 1 to 9 , in some embodiments, the driving assembly 4 includes a driving motor 41 and a screw rod 42. Among them, the driving motor 41 is arranged outside the control cavity 11 and on the outer wall of the main body 1. The output end of the driving motor 41 is arranged towards the control cavity 11. The screw rod 42 is arranged in the control cavity 11 and extends along the axial direction of the feeding cavity 12. One end of the screw rod 42 is coaxially connected to the output end of the driving motor 41. An axially extending threaded hole 37 is opened on the end surface of the first end of the piston 3, and the other end of the screw rod 42 is threadedly connected into the threaded hole 37. Therefore, the driving motor 41 can control the screw rod 42 to rotate forward or backward, and when the screw rod 42 rotates forward or backward, the screw rod 42 can rotate relative to the threaded hole 37 of the piston 3, driving the piston 3 to move along the axial direction of the feeding cavity 12, so that the piston 3 moves along the axial direction of the feeding cavity 12 towards the first end or the second end of the feeding cavity 12.

[0104] It should be noted that the output end of the driving motor 41 can be connected to the end of the screw 42 through a coupling, or can be connected to the end of the screw 42 through an accelerator or a gear assembly.

[0105] Please refer to Figures 1 to 9 , in some embodiments, an opening is provided at the end of the body 1 away from the first joint 13, and a cover plate 16 is provided at the opening of the body 1. The cover plate 16 closes the opening of the body 1, and thus closes the control cavity 11. The driving motor 41 is fixed on the cover plate 16, and the driving motor 41 is encapsulated on the cover plate 16 through the motor housing 17. A perforation (not marked in the figure) is provided on the cover plate 16, and the output end of the driving motor 41 is connected to the end of the screw 42 through the perforation.

[0106] In some embodiments, a sleeve portion 161 protrudes from the side wall of the cover plate 16 facing the control cavity 11. The sleeve portion 161 protrudes and extends from the side wall of the cover plate 16 along the axial direction of the dosing cavity 12 towards the dosing cavity 12. The perforation is provided in the sleeve portion 161, and one end of the screw 42 extends into the sleeve portion 161 and is connected to the output end of the driving motor 41. When the piston 3 moves along the axial direction of the dosing cavity 12 towards the first end of the dosing cavity 12, the end face of the first end of the piston 3 can abut against the sleeve portion 161. At this time, the first end of the dosing cavity 12 is opened, the second inlet 141 is opened, and the first inlet 131 is closed by the first valve body 2.

[0107] In some embodiments, a fixing post 162 protrudes from the side of the cover plate 16 facing the motor housing 17. A fixing hole 171 is provided on the motor housing 17. By connecting the screw passing through the fixing hole 171 with the fixing post 162, the motor housing 17 can be locked on the cover plate 16, and thus the driving motor 41 is encapsulated between the cover plate 16 and the motor housing 17.

[0108] Please refer to Figures 10 to 12 As shown, the liquid dosing controller 100 provided by another embodiment of the present invention mainly includes a body 1, a first valve body 2, a piston 3, a blocking member 5 and a driving assembly 4. Different from Figures 1 to 9 the liquid dosing controller 100 of the embodiment, the main difference lies in that the structure between the second end of the piston 3 and the second inlet is different. In the liquid dosing controller 100 of this embodiment, a blocking member 5 is provided at the second inlet.

[0109] Wherein, one end of the blocking member 5 close to the second inlet 141 is the first end, and the end of the blocking member 5 away from the second inlet 141 is the second end. The second end of the blocking member 5 is close to the piston 3. The first end of the blocking member 5 movably passes through the second inlet 141, and the second end of the blocking member 5 is arranged in the dosing cavity 12.

[0110] When the piston 3 is in the first position, the first end of the plugging member 5 extends into and is disposed within the second inlet 141, and is capable of plugging the second inlet 141 so as to separate the second inlet 141 from the dosing chamber 12.

[0111] When the piston 3 is in the second position and an external force acting in the direction towards its second end is applied to the first end of the plugging member 5, the plugging member 5 is capable of moving towards the piston 3, and further causing the first end of the plugging member 5 to withdraw from the second inlet 141, that is, opening the second inlet 141. At this time, the second inlet 141 is in communication with the dosing chamber 12, and the second liquid can enter the dosing chamber 12 through the second inlet 141 and flow from the first end of the dosing chamber 12 to the control chamber 11 to be mixed with the first liquid in the control chamber 11.

[0112] When the piston 3 is in the second position and no external force acting in the direction towards its second end is applied to the first end of the plugging member 5, the plugging member 5 is capable of maintaining the state of plugging the second inlet 141, and at this time, the second inlet 141 and the dosing chamber 12 remain isolated from each other.

[0113] Specifically, the first liquid can be a solute, such as a liquid medicine, a cleaning liquid, etc., and the second liquid is usually a solvent, such as water, etc. When the piston 3 is in the second position and no external force is applied to the plugging member 5, the plugging member 5 plugs the second inlet to separate the second inlet from the dosing chamber 12; by opening the solenoid valve on the liquid pipeline connected to the second inlet 141, water flows into the dosing chamber 12 through the liquid pipeline. Usually, the amount of water is relatively large, and the impact force of the water can push open the plugging member 5, and the plugging member 5 is capable of moving towards the piston 3, and further causing the first end of the plugging member 5 to withdraw from the second inlet 141, that is, opening the second inlet 141; when the solenoid valve is closed, the liquid pipeline is closed, and the plugging member 5 can move to the first position to plug and seal the second inlet.

[0114] Please refer to Figures 10 to 12 As shown, in some embodiments, a chute 38 is recessed in the second end of the piston 3, and the chute 38 extends in a concave manner from the end face of the second end of the piston 3 along the axial direction of the piston 3 towards the first end of the piston 3. The second end of the plugging member 5 is movably inserted into the chute 38.

[0115] An elastic member 6 is disposed in the chute 38. The elastic member 6 can be a spring or other elastic structural members. The end of the elastic member 6 close to the plugging member 5 is the first end, and the end of the elastic member 6 away from the plugging member 5 is the second end. The second end of the plugging member 5 is connected to the first end of the elastic member 6, and the second end of the elastic member 6 is connected to the inner wall of the chute 38. The elastic member 6 is capable of driving the plugging member 5 to move in a direction away from the second end of the elastic member 6, and further driving the plugging member 5 to plug the second inlet 141 and maintaining the separation between the second inlet 141 and the dosing chamber 12.

[0116] When an external force acts on the first end of the plugging member 5 in the direction towards its second end, for example, when the solenoid valve on the liquid pipeline communicating with the second inlet is opened, the impact force of the water flowing into the second inlet impacts the first end of the plugging member 5, and the plugging member 5 moves towards the chute 38, compressing the elastic member 6 and opening the second inlet 141. Therefore, when the plugging member 5 is not subjected to this external force or the external force disappears, for example, when the solenoid valve on the liquid pipeline communicating with the second inlet is closed and the water flow stops, the plugging member 5 moves towards the second inlet 141 under the elastic force of the elastic member 6 so that the plugging member 5 can plug the second inlet 141.

[0117] Please refer to Figures 10 to 12 As shown, in some embodiments, a third sealing ring 51 is sleeved on the outer peripheral wall of the plugging member 5 close to the inner wall of the second inlet 141. The third sealing ring 51 is used to seal the second inlet 141 when the first end of the plugging member 5 is not subjected to an external force.

[0118] Specifically, when the piston 3 is in the first position and the first end of the plugging member 5 is not subjected to an external force, as Figure 10 shown in the state, the first end of the piston 3 can plug the first end of the dosing chamber 12. At this time, the dosing chamber 12 is sealed and isolated from the control chamber 11, and the inner wall of the dosing chamber 12 at the second inlet 141 abuts against the third sealing ring 51, so that the third sealing ring 51 is attached to the inner wall on the periphery of the second inlet 141, thereby sealing the second inlet 141.

[0119] When the piston 3 is in the second position and the first end of the plugging member 5 is not subjected to an external force, as Figure 12 shown in the state, at this time, the first end of the piston 3 can be separated from the first end of the dosing chamber 12, the dosing chamber 12 is communicated with the control chamber 11, and the second end of the plugging member 5 under the elastic force of the elastic member 6 makes the first end of the plugging member 5 plug the second inlet 141, and the second inlet 141 remains closed. At this time, the second liquid still cannot enter the dosing chamber 12.

[0120] When the piston 3 is in the second position and the first end of the plugging member 5 is subjected to an external force, for example, the first end of the plugging member 5 is pushed open by the thrust of the water pump, so that the plugging member 5 moves towards the piston 3. The first end of the piston 3 can be separated from the first end of the dosing chamber 12 so that the dosing chamber 12 is communicated with the control chamber 11, and the plugging member 5 can push the elastic member 6, and the plugging member 5 moves towards the chute 38, thereby opening the second inlet 141. At this time, the second liquid can enter the dosing chamber 12 and then enter the control chamber 11 to be mixed with the first liquid in proportion.

[0121] Please refer to Figure 11As shown, in some embodiments, a seal limiting portion 52 is provided on the outer peripheral wall of the plugging member 5 where the third sealing ring 51 is disposed, and the seal limiting portion 52 is used to limit the third sealing ring 51. Specifically. The outer peripheral wall of the seal limiting portion 52 is provided with an outwardly convex limiting surface, and one side of the third sealing ring 51 facing away from the inner wall of the second inlet 141 abuts against the limiting surface 52. It should be noted that, in some other embodiments, the limiting surface is formed by an inward concavity along the circumferential direction of the outer peripheral wall of the seal limiting portion on the plugging member 5.

[0122] It should also be noted that, in some other embodiments, the third sealing ring 51 can also be integrally formed on the outer peripheral wall of the plugging member 5.

[0123] Please refer to Figures 1 to 13 , based on the structure of the liquid dispensing controller 100 in the above embodiments, the embodiment of the present invention further provides a liquid mixing and dispensing device, which can be used to control the mixing and dispensing of two different liquids in a specific ratio. The liquid mixing and dispensing device can be a foot bath device. For example, when a user uses a foot bath device for foot soaking and massage, the foot bath liquid medicine and water can be mixed through the liquid dispensing controller 100, and the mixed foot bath liquid can be dispensed, so that the foot soaking water can be fully mixed. The liquid mixing and dispensing device can also be a base station device for supplying water or cleaning the foot bath. For example, when a user needs to use a foot bath device for foot soaking, the foot bath device can be moved to the base station device. The base station device mixes the foot bath liquid medicine and water through the liquid dispensing controller 100, and dispenses the mixed foot bath liquid into the foot bath cavity of the foot bath device to provide a fully mixed foot bath liquid for the foot bath device, ensuring the efficacy of soaking feet with the foot bath liquid medicine; Another example is that after the user finishes using the foot bath device, the foot bath device can be returned to the base station device. After the foot bath device finishes draining, the base station device can mix the cleaning liquid and water through the liquid dispensing controller 100, and dispense the mixed liquid into the foot bath cavity of the foot bath device to clean the foot bath device. By fully mixing more than two liquids, the efficacy of the liquid can be improved. The liquid mixing and dispensing device mainly includes a liquid dispensing controller 100, a first liquid container 200, a second liquid container 300 and a liquid mixing container 400.

[0124] Among them, the liquid dispensing controller 100 adopts the liquid dispensing controller 100 of the above embodiment. The first liquid container 200 is used to store the first liquid, and the first liquid container 200 is connected to the first inlet 131 of the liquid dispensing controller 100. The second liquid container 300 is used to store the second liquid, and the second liquid container 300 is connected to the second inlet 141 of the liquid dispensing controller 100. The liquid mixing tank is used to store the mixed liquid, and the liquid mixing container 400 is connected to the outlet 151 of the liquid dispensing controller 100.

[0125] The liquid mixing container 400 can be structures such as a liquid mixing tank, a liquid mixing chamber, or a liquid mixing pipeline, etc., without limitation here.

[0126] Therefore, by driving the component 4 to control the piston 3 to move axially along the dosing chamber 12, the first liquid in the first liquid container 200 can quantitatively enter the dosing chamber 12 and the control chamber 11 through the first inlet 131, and the liquid in the second liquid container 300 can enter the dosing chamber 12 and the control chamber 11 through the opening time of the second inlet 141, thereby controlling the flow rate of the second liquid entering the dosing chamber 12 and the control chamber 11, enabling the second liquid with a specific flow rate to be preliminarily mixed with the quantitatively first liquid in the control chamber 11, and achieving the effect of mixing the two liquids in a specific proportion.

[0127] In addition, the first liquid and the second liquid after preliminary mixing in the control chamber 11 can enter the liquid mixing container 400 through the third joint 15, be stored in the liquid mixing container 400, or be further mixed in the liquid mixing container 400.

[0128] It should be noted that in some embodiments, multiple liquid mixing containers 400 can be provided, and the multiple liquid mixing containers 400 can all be detachably connected to the third joint 15, thereby collecting the first liquid and the second liquid mixed in different proportions through different liquid mixing containers 400.

[0129] It should also be noted that in other embodiments, the liquid mixing container 400 can also be replaced by a pipeline, or a pipeline structure can be provided between the third joint 15 and the inlet of the liquid mixing container 400.

[0130] In some embodiments, the first liquid container 200 and the second liquid container 300 are box structures with exhaust holes at the top. Therefore, when the first inlet 131 is opened, the liquid in the first liquid container 200 can smoothly enter the dosing chamber 12 through the inside of the first joint 13 and the first inlet 131, and the liquid in the second liquid container 300 can smoothly enter the dosing chamber 12 through the inside of the second joint 14 and the second inlet 141.

[0131] Please refer to Figure 10 , in some embodiments, a first liquid level sensor 201 is provided in the first liquid container 200. The first liquid level sensor 201 is used to detect the liquid level height of the first liquid in the first liquid container 200 and alarm to remind the user to add the first liquid when the liquid level height is insufficient. Similarly, a second liquid level sensor 301 is provided in the second liquid container 300. The second liquid level sensor 301 is used to detect the liquid level height of the second liquid in the second liquid container 300 and alarm to remind the user to add the second liquid when the liquid level height is insufficient.

[0132] In some embodiments, a sealing film is provided at the port of the first liquid container 200 connected to the first inlet 131. When the first liquid container 200 is connected to the first inlet 131, the sharp part 233 on the guiding ring 23 can pierce the sealing film to connect the first liquid container 200 with the first inlet 131 in communication.

[0133] It should be noted that, in some other embodiments, a sealing film may also be provided at the port of the second liquid container 300 connected to the second inlet 141. Meanwhile, a sharp part 233 is provided at the port of the second joint 14 connected to the second liquid container 300. When the second liquid container 300 is connected to the second inlet 141, the sharp part 233 can pierce the sealing film to connect the second liquid container 300 with the second inlet 141 in communication.

[0134] In some embodiments, the first liquid in the first liquid container 200 may be an additive, such as a cleaning agent, a liquid medicine, etc., and the second liquid in the second liquid container 300 may be a liquid to be mixed such as water. The first joint 13 may be provided on the upper wall of the body 1, and the second joint 14 may be provided on the side wall of the body 1. The concentration of the additive is relatively high, and it can enter the first joint 13 under the action of gravity, then enter the dosing chamber through the first inlet 131, and the additive is dosed quantitatively. When the piston 3 moves towards the first end of the dosing chamber 12, the second inlet 141 opens, and a large flow of water flows into the dosing chamber 12, which can generate a certain impact force, and can flush the additive in the dosing chamber 12 into the control chamber 11 and flow to the liquid mixing container 400 together through the third joint 15.

[0135] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A liquid dispensing controller, characterized in that, Comprising: A body, which forms the housing of the liquid dispensing controller, and has a control chamber and a dispensing chamber provided therein; A first inlet, which can communicate with the dispensing chamber; A second inlet, which can communicate with the dispensing chamber; An outlet, which communicates with the control chamber or the dispensing chamber; A piston, which is arranged in the body and can move between the dispensing chamber and the control chamber; Wherein, when the piston is in the first position, the first inlet communicates with the dispensing chamber, and the piston can separate the dispensing chamber from the control chamber; When the piston is in the second position, the dispensing chamber communicates with the control chamber; One end of the piston away from the second inlet is the first end, and one end of the piston close to the second inlet is the second end, and a sealing portion is convexly provided at the second end of the piston; When the piston is in the first position, the first end of the piston can block the first end of the dispensing chamber, so as to seal and isolate the dispensing chamber from the control chamber; and the second end of the piston is in sealing abutment with the second inlet to block the second inlet; When the piston is in the second position, the first end of the piston can be separated from the first end of the dispensing chamber, so as to communicate the dispensing chamber with the control chamber, and the second end of the piston is separated from the second inlet to open the second inlet.

2. A liquid dispensing controller, characterized in that, Comprising: A body, which forms the housing of the liquid dispensing controller, and has a control chamber and a dispensing chamber provided therein; A first inlet, which can communicate with the dispensing chamber; A second inlet, which can communicate with the dispensing chamber; An outlet, which communicates with the control chamber or the dispensing chamber; A piston, which is arranged in the body and can move between the dispensing chamber and the control chamber; A sealing member, which is arranged at the second inlet, the first end of the sealing member movably passes through the second inlet, and the second end of the sealing member is arranged in the dispensing chamber; Wherein, when the piston is in the first position, the first inlet communicates with the dispensing chamber, and the piston can separate the dispensing chamber from the control chamber; When the piston is in the second position, the dispensing chamber communicates with the control chamber; When an external force acts on the first end of the sealing member in the direction towards its second end, the sealing member opens the second inlet, so that the second inlet communicates with the dispensing chamber; when the sealing member is not subjected to the external force, the sealing member blocks the second inlet, so that the second inlet is separated from the dispensing chamber; One end of the piston away from the second inlet is the first end, and one end of the piston close to the second inlet is the second end; a sliding groove is recessed at the second end of the piston, and the second end of the sealing member movably extends into the sliding groove; An elastic member is arranged in the sliding groove, the second end of the sealing member is connected to the first end of the elastic member, and the second end of the elastic member is connected to the inner wall of the sliding groove. The elastic member is used to drive the sealing member to move in a direction away from the second end of the elastic member, so as to block the second inlet by the sealing member; When the first end of the blocking member is acted upon by an external force in the direction of the second end thereof, the blocking member moves in the direction of the slide slot to open the second inlet; When the blocking member is not acted upon by the external force, the blocking member moves toward the second inlet under the elastic force of the elastic member, so that the blocking member can block the second inlet.

3. The liquid dispensing controller according to claim 2, wherein A second connector is provided at the second inlet, and the second connector can be communicated with the delivery cavity through the second inlet.

4. The liquid dispensing controller according to claim 3, wherein, A third sealing ring is sleeved on the outer peripheral wall of the blocking member close to the inner wall of the second inlet, and the third sealing ring is used to seal the second inlet when the first end of the blocking member is not subjected to external force; When the piston is in the first position and the first end of the blocking member is not acted upon by an external force, the first end of the piston can block the first end of the delivery chamber, so that the delivery chamber is sealed and isolated from the control chamber, and the inner wall of the delivery chamber at the second inlet abuts against the third sealing ring, so that the third sealing ring seals the second inlet; When the piston is in the second position and the first end of the blocking member is not acted upon by an external force, the first end of the piston can be separated from the first end of the delivery chamber so that the delivery chamber is connected to the control chamber, and the second end of the blocking member is subjected to the elastic force of the elastic member so that the first end of the blocking member blocks the second inlet; When the piston is in the second position and the first end of the blocking member is acted upon by an external force, the first end of the piston can be separated from the first end of the delivery chamber to allow the delivery chamber to communicate with the control chamber, and the blocking member pushes the elastic member to move in the direction of the slide groove to open the second inlet.

5. The liquid dispensing controller according to claim 4, wherein A sealing ring limiting portion is provided on the outer peripheral wall of the blocking member where the third sealing ring is provided, and the sealing ring limiting portion is used to limit the position of the third sealing ring; A circumferentially outwardly convex or circumferentially inwardly concave limiting surface is provided on the outer peripheral wall of the sealing ring limiting portion, and a side of the third sealing ring facing away from the inner wall of the second inlet is in contact with the limiting surface.

6. The liquid dispensing controller according to any one of claims 1-5, characterized in that, Also includes: a first valve body, used for blocking the first inlet; When the piston is in the first position, the piston can push the first valve body to open the first inlet, and when the piston is in the second position, the piston is separated from the first valve body so that the first valve body blocks the first inlet.

7. The liquid delivery controller according to claim 6, wherein A first connector is provided at the first inlet, and the first connector is connected to the delivery cavity through the first inlet; The first valve body includes a plug and a return spring; The plug is movably disposed in the first joint and can move in the first joint to approach or move away from the first inlet; The return spring is disposed in the first joint and connected to the plug, and the return spring is used to drive the plug to move toward the first inlet to block the first inlet; The end of the plug facing the first inlet is convexly provided with a protruding portion; when the plug seals the first inlet, at least a part of the protruding portion can extend into the feeding cavity; and when the piston is in the first position, the piston can push the protruding portion so that the plug moves away from the first inlet and opens the first inlet.

8. The liquid dispensing controller according to claim 7, wherein The first valve body further includes a guide ring, and the guide ring is arranged in the first joint and on the side of the plug away from the first inlet. The guide ring is provided with a guide hole extending along the axial direction of the first joint. The side of the plug away from the first inlet is convexly provided with an axially extending guide post, and the guide post is movably inserted into the guide hole and can move axially along the guide hole.

9. The liquid dispensing controller according to claim 8, wherein The return spring is arranged between the plug and the guide ring, the return spring is sleeved on the guide post, one end of the return spring abuts against the plug, and the other end of the return spring abuts against the guide ring.

10. The liquid delivery controller according to claim 7, wherein The first valve body further includes a first sealing ring. A first sealing ring groove is recessed on the peripheral wall of the plug, and the first sealing ring is sleeved at the first sealing ring groove and arranged around the peripheral wall of the plug.

11. The liquid dispensing controller according to any one of claims 1-5, characterized in that, One end of the piston away from the second inlet is the first end, and a second sealing ring groove is provided on the outer peripheral wall of the first end of the piston, and the second sealing ring is sleeved at the second sealing ring groove. When the piston is in the first position, the second sealing ring is clamped between the inner wall of the first end of the feeding cavity and the outer wall of the first end of the piston and seals the first end of the feeding cavity.

12. The liquid dispensing controller according to any one of claims 1-5, characterized in that, The cavity wall of the feeding cavity extends towards the inside of the control cavity and forms an opening at the end facing the control cavity. A piston limiting portion is convexly provided on the circumference of the first end of the piston. When the piston moves to the first position, the piston limiting portion can abut against the end face of the opening to limit the piston from continuing to move towards the feeding cavity.

13. The liquid dispensing controller according to any one of claims 1-5, characterized in that, The cavity wall of the feeding cavity is provided with an axially extending guide groove, and a guide wall matching with the guide groove is convexly provided on the circumference of the piston. The guide wall extends along the axial direction of the feeding cavity, and the guide wall is slidably connected in the guide groove so that the piston can move axially along the feeding cavity.

14. The liquid dispensing controller according to any one of claims 1-5, characterized in that, It further includes: A driving assembly, arranged on the body, the driving assembly is connected to the piston and is used for driving the piston to move in the body.

15. The liquid dispensing controller according to claim 14, wherein The driving assembly includes a driving motor and a screw rod. A cover plate for sealing the control cavity is provided at one end of the control cavity away from the feeding cavity, and the driving motor is arranged on the cover plate. A axially extending threaded hole is opened on the end face of the first end of the piston. One end of the screw rod is connected to the output end of the driving motor, a through hole is provided on the cover plate, and the other end of the screw rod passes through the through hole and the control cavity in sequence and is threadedly connected in the threaded hole. When the driving motor controls the screw rod to rotate forward or backward, the screw rod can drive the piston to move along the inner wall of the feeding cavity.

16. The liquid dispensing controller according to any one of claims 1-5, characterized in that, A third joint is provided at the outlet, and the third joint and the outlet are arranged on opposite sides.

17. A liquid mixing and dispensing device, characterized in that, It includes a liquid dispensing controller, a first liquid container, a second liquid container and a liquid mixing container; The liquid dispensing controller adopts the liquid dispensing controller described in any one of claims 1-16; The first liquid container is connected to the first inlet, and the first liquid is stored in the first liquid container; The second liquid container is connected to the second inlet, and the second liquid is stored in the second liquid container; The liquid mixing container is connected to the outlet, and the liquid mixing container is used to store the mixed liquid.

18. The liquid mixing and dispensing device according to claim 17, wherein, A first liquid level sensor is provided in the first liquid container, and a second liquid level sensor is provided in the second liquid container; and / or A sealing film is provided at the port of the first liquid container connected to the first inlet; a first joint is provided at the first inlet, and a sharp part is provided at the port of the first joint connected to the first liquid container; when the first liquid container is connected to the first inlet, the sharp part can pierce the sealing film so that the first liquid container is in communication with the first inlet.

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