Liquid aspirator and liquid adding device

Abstract

The application provides a liquid pumping device and a liquid adding device. The liquid pumping device comprises a pump body arranged in a container to pump liquid in the container, a pipe body connected to the pump body to transmit the liquid, and a holding part connected to one end of the pipe body away from the pump body, the holding part being connected to the pump body and capable of controlling the pump body. The holding part comprises a swing plate and a plurality of power supply interfaces, the plurality of power supply interfaces at least comprising different types of first power supply interfaces and second power supply interfaces, the swing plate being movable, when the swing plate is moved to a first position, the swing plate exposes the first power supply interfaces and blocks the second power supply interfaces, and when the swing plate is moved to a second position, the swing plate blocks the second power supply interfaces and exposes the first power supply interfaces. The liquid pumping device can realize diversification of power supply modes and effectively improve the safety of the power supply interfaces.

Description

Technical Field

[0001] This application relates to the field of liquid dispensing tools, and more particularly to a liquid pump and liquid dispensing device. Background Technology

[0002] In the current field of liquid pumps, the flexibility and security of power supply methods still need to be improved. Although some devices attempt to provide multiple power supply interfaces to adapt to different usage scenarios, in actual design, there is often a lack of effective management and protection mechanisms between different power supply interfaces. Exposing multiple power supply interfaces not only increases the risk of misoperation, but also poses challenges to circuit safety and interface protection for the device in complex usage environments. Summary of the Invention

[0003] This application provides a liquid pump that can diversify power supply methods and effectively improve the security of the power supply interface.

[0004] In a first aspect, embodiments of this application provide a liquid extractor, which includes: A pump body, used to be installed inside a container to draw liquid from the container; A pipe body, connected to the pump body, for conveying liquid; and, A grip is connected to the end of the tube away from the pump body; the grip is connected to the pump body and can control the pump body. The gripping part includes a swing plate and multiple power supply interfaces. The multiple power supply interfaces include at least a first power supply interface and a second power supply interface of different types. The swing plate is movable. When the swing plate is moved to a first position, the swing plate exposes the first power supply interface and blocks the second power supply interface. When the swing plate is moved to a second position, the swing plate blocks the second power supply interface and exposes the first power supply interface.

[0005] Optionally, the gripping part further includes a base and a circuit board, the circuit board being disposed within the base, the circuit board having a first power supply interface and a second power supply interface, the base having a first opening and a second opening, the first opening being directly opposite the first power supply interface, and the second opening being directly opposite the second power supply interface; The swing plate is rotatably connected to the base, and the swing plate can block at least one of the first opening and the second opening, or the swing plate can expose the first opening or the second opening.

[0006] Optionally, the swing plate includes a plate body and a lever part. The plate body is disposed inside the base, and the lever part is disposed outside the base. The lever part can drive the plate body to rotate. The plate body is provided with a third opening and a fourth opening. When the third opening is directly opposite the first opening, the first power supply interface is exposed; when the fourth opening is directly opposite the second opening, the second power supply interface is exposed.

[0007] Optionally, when the swing plate rotates to the third position, the swing plate blocks the first power supply interface and the second power supply interface.

[0008] Optionally, the base is provided with a first limiting part, and the actuating part is provided with a second limiting part. The first limiting part and the second limiting part can be connected to limit the swing plate to at least one of the first position, the second position and the third position.

[0009] Optionally, the first limiting part includes a plurality of limiting protrusions, and the second limiting part includes a mating groove, with the plurality of limiting protrusions spaced apart on the base; During the rotation of the lever plate relative to the base, the mating groove can engage with any of the limiting protrusions to limit the lever plate to a first position, a second position, or a third position.

[0010] Optionally, the swing plate further includes a rotating shaft, and both the plate body and the actuating part are connected to the rotating shaft, with the actuating part and the plate body located on both sides of the base; The actuating part includes a first end and a second end opposite to each other. The first end is connected to the rotating shaft, and the second end is provided with the mating groove on the side facing the base. The outer side of the base is provided with a plurality of limiting protrusions.

[0011] Optionally, the base includes a first sub-shell and a second sub-shell that are separately arranged. The first sub-shell and the second sub-shell are spliced ​​together to form the base. The first sub-shell includes an outer plate and a support. The outer plate is located on the outermost side of the first sub-shell, and the support is located inside the first sub-shell and is arranged opposite to the outer plate. The bracket has a rotating hole on the side facing the outer plate, and the rotating shaft passes through the outer plate, with part of the rotating shaft located inside the rotating hole.

[0012] Optionally, the bracket includes a sidewall located on the side of the rotating hole facing the second sub-shell, the sidewall being provided with a guide portion to guide the rotating shaft to move into the rotating hole.

[0013] Optionally, the guide portion includes an inclined surface that is inclined from the rotating hole toward the second sub-shell and toward the direction away from the outer plate.

[0014] Optionally, the edge of the plate body is provided with a positioning groove facing the outer plate, and the outer plate is provided with a limiting block protruding towards the positioning groove, the limiting block being able to engage with the positioning groove to restrict the rotation of the plate body; or... The edge of the plate is provided with a positioning groove facing the bracket, and the bracket is provided with a limiting block protruding towards the positioning groove. The limiting block can be engaged in the positioning groove to restrict the rotation of the plate.

[0015] Optionally, along the rotation direction of the plate, the positioning groove has a first groove wall and a second groove wall that are disposed opposite to each other. The first groove wall and the second groove wall are inclined and connected. The shape of the limiting block is adapted to the positioning groove. When the limiting block is located in the positioning groove, the first groove wall and the second groove wall can restrict the movement of the limiting block along the rotation direction of the plate.

[0016] Optionally, the base is further provided with two blocking parts. The two blocking parts are spaced apart along the rotation direction of the swing plate and are located on the rotation trajectory of the swing plate to limit the rotation range of the swing plate. Multiple limiting protrusions are located between the two blocking parts.

[0017] Optionally, the plurality of limiting protrusions include a first limiting protrusion, a second limiting protrusion, and a third limiting protrusion, wherein the second limiting protrusion is located between the first limiting protrusion and the third limiting protrusion along the rotation direction of the swing plate; When the mating groove engages with the first limiting protrusion, the swing plate is in the first position; when the mating groove engages with the second limiting protrusion, the swing plate is in the second position; and when the mating groove engages with the third limiting protrusion, the swing plate is in the third position.

[0018] Optionally, the first limiting protrusion is disposed adjacent to one of the blocking portions, and the third limiting protrusion is disposed adjacent to another of the blocking portions.

[0019] Optionally, the grip portion further includes a control switch connected to the circuit board, the control switch being able to control the circuit board, and the control switch and the first power supply interface being located on opposite sides of the grip portion.

[0020] Optionally, the first power supply interface includes one of a USB interface, a Type-C interface, a Micro-USB interface, and a Lightning interface, and the second power supply interface includes a DC interface; or, The grip also includes a battery compartment capable of holding one or more batteries; or... The grip also includes a battery, which may be a non-rechargeable battery or a rechargeable battery.

[0021] Secondly, embodiments of this application also provide a liquid adding device, which includes: Containers for storing liquids; and, The pump described above is installed in the container and is used to output the liquid inside the container.

[0022] This application provides a liquid pump, in which the pump body extracts liquid, and the tubing serves as a liquid transport channel, guiding the liquid extracted by the pump body to the outside of a container. A grip is connected to the end of the tubing away from the pump body, providing a convenient holding point for the user. Furthermore, through its functional connection with the pump body, the user can directly or indirectly control the pump's operating state, such as starting or stopping the pump, making operation more convenient. The grip has multiple power supply interfaces, including at least different types of first and second power supply interfaces. For example, the first power supply interface can be a TYPE-C interface, while the second power supply interface can be a DC interface, to adapt to diverse external power sources and meet power supply needs in different scenarios. The grip is also equipped with a movable swing plate, whose movement mechanism allows for selective exposure or obstruction of the power supply interfaces.

[0023] When the switch plate is in the first position, the first power supply interface is exposed and usable, while the second power supply interface is blocked by the switch plate. In this case, the user can power the device through the first interface. Conversely, when the switch plate is switched to the second position, the second power supply interface is exposed and usable, while the first interface is blocked. This design ensures that only one of the first and second power supply interfaces is always usable, while the other is reliably blocked, thus guiding the user to correctly use the currently exposed and usable power supply method. Therefore, this embodiment of the application, through the mechanism of selectively exposing a single power supply interface by the switch plate, ensures that the first and second power supply interfaces cannot be used simultaneously, effectively avoiding mis-insertion operations that may be caused by multiple power supply interfaces being exposed at the same time, and fundamentally avoiding circuit conflicts or equipment damage caused by the simultaneous connection of different types of power supplies. For example, when the user selects to use the TYPE-C interface for power supply, the switch plate will automatically block the DC interface, preventing mis-insertion and protecting unused power supply interfaces from external contamination such as dust and liquids, helping to extend the service life of the power supply interfaces. Moreover, when powering the liquid extractor, users do not need to distinguish or select among multiple power supply interfaces. They can simply connect to the power supply interface exposed on the swing plate to use the power supply interface quickly and intuitively. This not only achieves the diversification of power supply interfaces but also improves the safety and reliability of the liquid extractor when it is powered. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0026] Figure 1 This is a schematic diagram of the structure of the liquid extractor provided in an embodiment of this application.

[0027] Figure 2 for Figure 1 An enlarged schematic diagram of part A of the pump shown.

[0028] Figure 3 for Figure 1 The diagram shows the structure of the pump in another state.

[0029] Figure 4 for Figure 3 An enlarged schematic diagram of part B of the pump shown.

[0030] Figure 5 for Figure 1 The exploded view of the pump shown.

[0031] Figure 6 for Figure 5 The diagram shows the structure of the swing plate in the liquid extractor.

[0032] Figure 7 This is another schematic diagram of the liquid extractor provided in an embodiment of this application.

[0033] Figure 8 for Figure 7 An enlarged schematic diagram of section C of the pump shown.

[0034] Figure 9 for Figure 1 A schematic diagram of the pump from another angle.

[0035] Figure 10 for Figure 9 The shown is a cross-sectional view of the pump along the AA direction.

[0036] Figure 11 for Figure 10 An enlarged schematic diagram of part E in the pump shown.

[0037] Figure 12 for Figure 5 The diagram shows the structure of the first sub-shell in the pump.

[0038] Figure 13 for Figure 12 An enlarged schematic diagram of part D in the first subshell is shown. Figure 14 for Figure 1 The diagram shows the structure of the pump at another angle.

[0039] Figure 15 for Figure 1 The diagram shows the structure of F in the pump.

[0040] Figure 16 for Figure 14 An enlarged schematic diagram of section G in the shown liquid extractor.

[0041] Figure 17 This is a schematic diagram of the liquid addition device provided in an embodiment of this application.

[0042] Figure 18 for Figure 14 The diagram shows the structure of the mounting section in the liquid extractor.

[0043] Figure 19 for Figure 18 The shown is a cross-sectional view of the mounting section along the BB direction.

[0044] Explanation of reference numerals in the attached figures: 1. Liquid pump; 11. Pump body; 12. Tube body; 121. Limiting groove; 122. Telescopic part; 13. Grip, 131. Operating lever, 132. Automatic control circuit, 1322. Sensor, 1324. Control circuit, 133. Control switch, 134. Handle, 135. Base, 1351. First opening, 1352. Limiting protrusion, 1353. Second opening, 1354. First sub-shell, 13542. Outer plate, 13544. Bracket, 13545. Rotating hole, 13546. Side wall, 13 547. Guide section; 1356. Second sub-shell; 1358. Blocking section; 136. Liquid filling tube; 137. Swing plate; 1372. Plate body; 1373. Third opening; 1374. Fourth opening; 1375. Positioning groove; 1376. Toggle section; 1377. Mating groove; 1378. Rotating shaft; 138. Circuit board; 1382. First power supply interface; 1384. Second power supply interface; 139. Battery compartment; 14. Mounting part; 142. Connecting part; 1422. Sleeving part; 1423. Hollowed-out opening; 1424. Spring piece; 1425. Snap-fit ​​part; 144. Clamping part; 146. Cover; 148. Handle; 2. Container, 21. Outlet, 22. Circular wall. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0046] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0047] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the liquid extractor provided in the embodiments of this application. Figure 2 for Figure 1 An enlarged schematic diagram of part A of the pump shown. Figure 3 for Figure 1 The diagram shown is a schematic of the pump in another state. Figure 4 for Figure 3 The diagram shows an enlarged view of part B of the liquid extractor. This application provides a liquid extractor 1, which includes a pump body 11, a tube body 12, and a gripping part 13. The pump body 11 is placed inside a container to extract liquid from the container; the tube body 12 is connected to the pump body 11 to transfer the liquid; the gripping part 13 is connected to the end of the tube body 12 away from the pump body 11, and the gripping part 13 is connected to the pump body 11 and can control the pump body 11, such as turning the pump body 11 on or off. The gripping part 13 includes a swing plate 137 and multiple power supply interfaces, including at least different types of first power supply interfaces 1382 and second power supply interfaces 1384. The swing plate 137 is movable. When the swing plate 137 moves to a first position, the first power supply interface 1382 is exposed and the second power supply interface 1384 is blocked. When the swing plate 137 moves to a second position, the second power supply interface 1384 is blocked and the first power supply interface 1382 is exposed.

[0048] In this embodiment, the pump body 11 extracts liquid, and the tube body 12 serves as a liquid transfer channel, guiding the liquid extracted by the pump body 11 to the outside of the container. The grip part 13 is connected to the end of the tube body 12 away from the pump body 11, providing a convenient gripping point for the user. Furthermore, through its functional connection with the pump body 11, it allows the user to directly or indirectly control the operating state of the pump body 11, such as starting or stopping the pump body 11, making operation more convenient.

[0049] The grip 13 is equipped with multiple power supply interfaces, including at least different types of first power supply interfaces 1382 and second power supply interfaces 1384. For example, the first power supply interface 1382 can be a TYPE-C interface, while the second power supply interface 1384 can be a DC interface, to adapt to diverse external power supplies and meet power supply needs in different scenarios. The grip 13 is also equipped with a movable swing plate 137, which can selectively expose or cover the power supply interfaces through its movement mechanism. When the swing plate 137 is in the first position, the first power supply interface 1382 is exposed and usable, while the second power supply interface 1384 is covered by the swing plate 137. At this time, the user can power the device through the first interface. When the swing plate 137 is switched to the second position, the second power supply interface 1384 is exposed for use, while the first interface is covered by the swing plate 137. This design ensures that only one of the first power supply interface 1382 and the second power supply interface 1384 is always usable, while the other is reliably covered, thereby guiding the user to correctly use the currently exposed and usable power supply method.

[0050] Therefore, this embodiment of the application, through the mechanism of selectively exposing the power supply interface by the swing plate 137, ensures that the first power supply interface 1382 and the second power supply interface 1384 are not used simultaneously. This effectively avoids mis-insertion operations that may be caused by the simultaneous exposure of multiple power supply interfaces, and fundamentally avoids circuit conflicts or equipment damage caused by the simultaneous connection of different types of power supplies. For example, when the user selects to use the TYPE-C interface for power supply, the swing plate 137 will automatically block the DC interface, which not only prevents mis-insertion but also protects the unused power supply interface from external contamination such as dust and liquid, thus helping to extend the service life of the power supply interface. Moreover, when powering the liquid extractor 1, the user does not need to identify or select among multiple power supply interfaces; they only need to connect to the power supply interface exposed by the swing plate 137 to quickly and intuitively use the power supply interface. This not only achieves the diversification of power supply interfaces but also improves the safety and reliability of the liquid extractor 1 when powered.

[0051] It is understood that the grip portion 13 may also include more power supply interfaces, and the swing plate 137 may rotate to a corresponding position to expose one of the power supply interfaces and block the others. For example, the grip portion 13 may also include a third power supply interface, and the swing plate 137 may rotate to a corresponding position to expose the third power supply interface and block the first power supply interface 1382 and the second power supply interface 1384. Correspondingly, when the swing plate 137 rotates to the first position or the second position, the swing plate 137 also blocks the third power supply interface.

[0052] Please combine Figure 5 , Figure 5 for Figure 1 An exploded view of the liquid extractor is shown. In some embodiments, the grip 13 further includes a base 135 and a circuit board 138. The circuit board 138 is disposed within the base 135 and has a first power supply interface 1382 and a second power supply interface 1384. The base 135 has a first opening 1351 and a second opening 1353. The first opening 1351 faces the first power supply interface 1382, and the second opening 1353 faces the second power supply interface 1384. A swing plate 137 is rotatably connected to the base 135. The swing plate 137 can block at least one of the first opening 1351 and the second opening 1353, and the swing plate 137 can expose either the first opening 1351 or the second opening.

[0053] In this embodiment, to enable users to connect to the first power supply interface 1382 and the second power supply interface 1384, the base 135 is provided with a first opening 1351 and a second opening 1353, forming a channel for inserting the power cord. The swing plate 137 is mounted on the base 135 by a rotating connection, which is simple to operate and has a stable and reliable structure. Users can rotate the swing plate 137 to a first position, so that the first opening 1351 is exposed and the second opening 1353 is covered; or rotate it to a second position, so that the second opening 1353 is exposed and the first opening 1351 is covered.

[0054] Please combine Figure 6 , Figure 6 for Figure 5 The diagram shows the structure of the swing plate in the liquid extractor. In some embodiments, the swing plate 137 includes a plate body 1372 and a toggle part 1376. The plate body 1372 is disposed inside the base 135, and the toggle part 1376 is disposed outside the base 135. The toggle part 1376 can drive the plate body 1372 to rotate. The plate body 1372 is provided with a third opening 1373 and a fourth opening 1374. When the third opening 1373 is directly opposite the first opening 1351, the first power supply interface 1382 is exposed. When the fourth opening 1374 is directly opposite the second opening 1353, the second power supply interface 1384 is exposed.

[0055] In this embodiment, the user can rotate the plate 1372 located inside the base 135 synchronously by moving the toggle part 1376 located outside the base 135. When the plate 1372 rotates until its third opening 1373 aligns with the first opening 1351 on the base 135, a through channel is formed, fully exposing the first power supply interface 1382, allowing the user to connect to power. Correspondingly, when the plate 1372 rotates until its fourth opening 1374 aligns with the second opening 1353 on the base 135, the second power supply interface 1384 is exposed and becomes usable. When the plate 1372 rotates to a position where its openings are not aligned with any opening on the base 135, the solid structure of the plate 1372 will obscure all power supply interfaces.

[0056] With the above structure, users only need to move the toggle part 1376 on the outside of the base 135 to switch between exposing different power supply interfaces or covering the corresponding power supply interfaces by taking advantage of the alignment between the opening of the plate 1372 and the opening of the base 135. This not only makes the operation intuitive and convenient, but also enables centralized management of multiple power supply interfaces, thereby ensuring that at most one power supply interface is in a connected state at any time. On the one hand, this effectively avoids the risk of circuit conflicts caused by mis-plugging or simultaneous connection of multiple power supplies. On the other hand, it also provides good physical protection for power supply interfaces that are not in use, thereby improving the operational safety, reliability and durability of the equipment.

[0057] Please combine Figure 7 and Figure 8 , Figure 7 This is another structural schematic diagram of the liquid extractor provided in an embodiment of this application. Figure 8 for Figure 7 An enlarged schematic diagram of section C in the liquid extractor shown. In some embodiments, when the swing plate 137 can be rotated to the third position, the swing plate 137 blocks the first power supply interface 1382 and the second power supply interface 1384.

[0058] In this embodiment, the swing plate 137 can rotate to a third position, in addition to exposing the first power supply interface 1382 or the second power supply interface 1384 respectively. When in this third position, the swing plate 137 simultaneously blocks both the first and second power supply interfaces 1382, rendering both interfaces unusable. When the pump 1 is not in operation or needs to be stored or transported, the user can place the swing plate 137 in this third position, thereby protecting both the first and second power supply interfaces 1382 and 1384 simultaneously. This effectively prevents dust, moisture, or other foreign matter from entering the power supply interfaces, causing corrosion or short circuits, and improves the ease of maintenance and long-term reliability of the equipment.

[0059] It should be noted that the movement of the swing plate 137 is not limited to a rotating connection; the swing plate 137 can also be mounted on the grip portion 13 by sliding along a straight line. Through this linear sliding, the swing plate 137 can also be positioned in different locations to achieve the function of blocking or exposing the power supply interface.

[0060] In some embodiments, the base 135 is provided with a first limiting part, and the toggle part 1376 is provided with a second limiting part. The first limiting part and the second limiting part can be connected to limit the swing plate 137 to at least one of a first position, a second position, and a third position.

[0061] Please combine Figures 9-11 , Figure 9 for Figure 1 A schematic diagram of the pump from another angle. Figure 10 for Figure 9 The shown is a cross-sectional view of the pump along the AA direction. Figure 11 for Figure 10 The diagram shows an enlarged view of part E in the pump. In some examples, the first limiting part includes multiple limiting protrusions 1352, and the second limiting part includes a mating groove 1377. The multiple limiting protrusions are spaced apart on the base 135. During the rotation of the lever plate relative to the base 135, the mating groove 1377 can engage with any one of the limiting protrusions to limit the lever plate 137 to a first position, a second position, or a third position.

[0062] The limiting protrusion 1352 can be hemispherical or wedge-shaped, and the shape of the matching groove 1377 is adapted to match it, so that the two can form a stable but detachable locking connection. When the user rotates the actuating part 1376, the actuating part 1376 drives the internal plate 1372 to rotate synchronously. At this time, the matching groove 1377 on the actuating part 1376 can sequentially engage with the limiting protrusions 1352 at different positions on the base 135, realizing the switching and locking of the swing plate 137 between different working positions.

[0063] In some examples, the multiple limiting protrusions 1352 may include a first limiting protrusion, a second limiting protrusion, and a third limiting protrusion. Along the rotation direction of the swing plate 137, the second limiting protrusion is located between the first limiting protrusion and the third limiting protrusion. When the mating groove 1377 engages with the first limiting protrusion, the swing plate 137 is in the first position. When the mating groove 1377 engages with the second limiting protrusion, the swing plate 137 is in the second position. When the mating groove 1377 engages with the third limiting protrusion, the swing plate 137 is in the third position.

[0064] Once the mating groove 1377 engages with any of the limiting protrusions 1352, the user can overcome the engagement by applying a certain rotational force. When sufficient torque is applied, the mating groove 1377 can smoothly slide out of the current limiting protrusion 1352 and continue to rotate to the next working position to expose the required power supply interface. This ensures the stability of the swing plate 137 in the working position, prevents accidental displacement due to slight contact, and ensures that a smooth position change can be achieved by appropriate external force when the power supply interface needs to be switched. This achieves a balance between the stability and flexibility of the swing plate 137.

[0065] Furthermore, the engagement mechanism of the groove 1377 and the limiting protrusion 1352 in this embodiment provides users with a clear sense of gear position and precise tactile feedback, ensuring accurate and reliable position switching. Simultaneously, it ensures that the swing plate 137 can stably remain in the limiting position, effectively preventing power interruption or accidental interface exposure due to accidental sliding, thus guaranteeing the continuity and safety of the power supply process.

[0066] It should be noted that the number of limiting protrusions 1352 can be adjusted according to actual needs. In another example, only two limiting protrusions 1352 can be set so that the swing plate 137 can switch and lock between two positions; or only one limiting protrusion 1352 can be set so that the swing plate 137 can achieve stable limiting in a single position.

[0067] In some embodiments, the limiting connection between the base 135 and the actuating part 1376 can also be achieved through other structural forms. For example, a magnetic connection can be used for limiting: multiple first magnetic elements are provided on the base 135 corresponding to each working position of the swing plate 137. These first magnetic elements can be embedded in the grooves of the base 135, directly bonded, or integrally formed on the base 135 by injection molding; at the same time, a corresponding second magnetic element is provided on the actuating part 1376. When the actuating part 1376 rotates to each working position, the magnetic attraction between the corresponding first magnetic element on the base 135 and the second magnetic element on the actuating part 1376 can achieve a stable limiting effect. When it is necessary to switch positions, the external force applied by the user overcomes the magnetism, and the rotation can continue to the next position. One of the first magnetic element and the second magnetic element is a magnet and the other is a magnet or a magnetic metal.

[0068] In other embodiments, the limiting structure may also employ a combination of an elastic protrusion and a limiting hole. Specifically, the first limiting part can be configured as multiple limiting holes, while the second limiting part can be configured as an elastic protrusion. During the rotation of the actuating part 1376, the elastic protrusion will elastically retract upon contact with the surface of the base 135; when rotated to the working position, the elastic protrusion precisely aligns with the limiting hole and extends and engages within it under its own elastic force, thereby achieving reliable limiting. When it is necessary to switch positions, the external force applied by the user causes the elastic protrusion to retract again, allowing rotation to continue to the next position.

[0069] In one embodiment, the swing plate 137 further includes a rotating shaft 1378, and the plate body 1372 and the actuating part 1376 are both connected to the rotating shaft 1378. The actuating part 1376 and the plate body 1372 are located on both sides of the base 135. The actuating part 1376 includes a first end and a second end opposite to each other. The first end is connected to the rotating shaft 1378, and the second end is provided with a mating groove 1377 on the side facing the base 135. A plurality of limiting protrusions 1352 are provided on the outer side of the base 135.

[0070] In this embodiment, the linkage transmission between the actuating part 1376 and the internal plate 1372 is achieved through the rotating shaft 1378, ensuring that external operations on the actuating part 1376 can be accurately transmitted to the internal plate 1372. The actuating part 1376 can be a strip-shaped structure. Due to its long shape, the strip-shaped actuating part 1376 forms an effective lever arm during operation. The user only needs to apply a small force to easily drive the plate 1372 to rotate, improving the convenience of operation. At the same time, the mating groove 1377 is located at the second end away from the rotating shaft 1378, which effectively increases the lever arm of the limiting action, making the engagement between the limiting protrusion 1352 and the mating groove 1377 more stable and reliable, effectively enhancing the holding force of the swing plate 137 in each working position. The limiting protrusion 1352 is located on the outside of the base 135, allowing the user to easily view the position of the limiting protrusion 1352 and conveniently control the angle and force of the rotation of the actuating part 1376.

[0071] In some embodiments, the base 135 includes a first sub-shell 1354 and a second sub-shell 1356 that are separately disposed, and the first sub-shell 1354 and the second sub-shell 1356 are joined together to form the base 135. Please refer to Figure 12 and Figure 13 , Figure 12 for Figure 5 The diagram shows the structure of the first sub-shell in the pump. Figure 13 for Figure 12The diagram shows an enlarged view of part D in the first sub-shell. The first sub-shell 1354 includes an outer plate 13542 and a support 13544. The outer plate 13542 is located on the outermost side of the first sub-shell 1354, and the support 13544 is located inside the first sub-shell 1354 and is arranged opposite to the outer plate 13542. The support 13544 has a rotating hole 13545 on the side facing the outer plate 13542, and a rotating shaft 1378 passes through the outer plate 13542, with part of the rotating shaft 1378 located inside the rotating hole 13545.

[0072] In this embodiment, the separate design of the first sub-shell 1354 and the second sub-shell 1356 facilitates the installation of various components within the base 135, such as the positioning and fixing of components like the rotating shaft 1378 and the circuit board 138, effectively improving assembly efficiency. A bracket 13544 is also provided within the first sub-shell 1354. The rotating shaft 1378 passes through the outer plate 13542, and its end is inserted into the rotation hole 13545 of the bracket 13544. Through this structural design, the rotating shaft 1378 is stably supported between the outer plate 13542 and the bracket 13544, ensuring both the stability of the rotating shaft 1378 installation and the smooth and stable rotation of the swing plate 137. The rotation hole 13545 can be a through hole penetrating the bracket 13544 or a blind hole; this embodiment does not limit this.

[0073] In some embodiments, the bracket 13544 includes a sidewall 13546 located on the side of the rotating hole 13545 facing the second sub-shell 1356. The sidewall 13546 is provided with a guide portion to guide the rotating shaft 1378 to move into the rotating hole 13545. In this embodiment, the guide portion 13547 is used to guide the rotating shaft 1378 to move accurately and smoothly into the rotating hole 13545 during the assembly process, so as to achieve a precise fit between the rotating shaft 1378 and the bracket 13544.

[0074] In some embodiments, the guide portion 13547 includes a ramp, which is inclined from the rotating hole 13545 toward the second sub-shell 1356 and toward the direction away from the outer plate 13542. In this embodiment, the inclined ramp forms a guide channel. When the operator moves the end of the rotating shaft 1378 toward the rotating hole 13545, even with a certain degree of positional deviation, the end of the rotating shaft 1378 will first contact the inclined surface of the ramp. During further advancement, the ramp automatically guides the end of the rotating shaft 1378 to the center position of the rotating hole 13545, allowing it to slide smoothly into the hole. This guiding process effectively reduces alignment difficulty and simplifies installation. The ramp design of the guide portion also effectively avoids possible jamming or interference between the end of the rotating shaft 1378 and the edge of the bracket 13544, ensuring smooth installation and preventing component damage caused by forced installation. Simultaneously, this guiding mechanism reduces the requirements for assembly precision, thereby maintaining stable assembly quality and improving the product assembly qualification rate.

[0075] Please continue to combine Figure 6 In some embodiments, the edge of the plate 1372 is provided with a positioning groove 1375 facing the outer plate 13542, and the outer plate 13542 is provided with a limiting block protruding towards the positioning groove 1375. The limiting block can be engaged with the positioning groove 1375 to restrict the rotation of the plate 1372. Alternatively, the edge of the plate 1372 is provided with a positioning groove 1375 facing the bracket 13544, and the bracket 13544 is provided with a limiting block protruding towards the positioning groove 1375. The limiting block can be engaged with the positioning groove 1375 to restrict the rotation of the plate 1372.

[0076] In this embodiment, the positioning structure provides a clear positioning reference for the installation process of the swing plate 137 through the mechanical cooperation between the positioning groove 1375 and the limiting block. During the assembly stage, when the limiting block and the positioning groove 1375 are engaged, it indicates to the operator that the plate 1372 has reached the correct position. This not only simplifies the alignment process during installation and improves assembly accuracy and efficiency, but also effectively prevents the plate 1372 from rotating accidentally in subsequent assembly steps, creating favorable conditions for the precise installation of other components.

[0077] In some embodiments, along the rotation direction of the plate 1372, the positioning groove 1375 has a first groove wall and a second groove wall that are disposed opposite to each other. The first groove wall and the second groove wall are inclined and connected. The shape of the limiting block is adapted to the positioning groove 1375. When the limiting block is located in the positioning groove 1375, the first groove wall and the second groove wall can restrict the movement of the limiting block along the rotation direction of the plate 1372.

[0078] In this embodiment, when the limiting block is located within the positioning groove 1375, the first groove wall and the second groove wall can form an effective bidirectional constraint, jointly restricting the displacement of the limiting block along the rotation direction of the plate 1372 from two directions. For example, the positioning groove 1375 can adopt a V-shaped structure, and correspondingly, the limiting block is also designed to match it with a V-shape. During installation, when the plate 1372 rotates to a predetermined angle, the self-guiding characteristic of the V-shaped structure allows the limiting block to automatically slide into the bottom of the positioning groove 1375 along the inclined first or second groove wall. This process provides clear tactile feedback to the operator, enabling them to accurately perceive the assembly in place, thereby ensuring the accuracy of the assembly. The constraint provided by the positioning groove 1375 and the limiting block is sufficient to keep the plate 1372 stable. However, when switching power supply interfaces, the rotational force applied by the user can also allow the limiting block to more smoothly overcome the constraint of the V-shaped groove wall of the positioning groove 1375, thereby smoothly sliding out of the positioning groove 1375 and realizing the adjustment of the plate 1372's position.

[0079] In some embodiments, the base 135 is further provided with two blocking portions 1358. Along the rotation direction of the swing plate 137, the two blocking portions 1358 are spaced apart and located on the rotation trajectory of the swing plate 137 to limit the rotation range of the swing plate 137. A plurality of limiting protrusions are located between the two blocking portions 1358.

[0080] In this embodiment, the two blocking portions 1358 can mechanically limit the movement of the swing plate 137 from two opposite rotational directions, thereby effectively limiting the rotation range of the swing plate 137. Multiple limiting protrusions 1352 are located in the area between the two blocking portions 1358. The multiple limiting protrusions 1352 in the middle, through their engagement with the mating grooves 1377 on the actuating portion 1376, provide multiple precise working positions for the swing plate 137. The blocking portions 1358 on both sides set safe rotational boundaries for the swing plate 137, effectively preventing mechanical interference, wire entanglement, or component damage caused by excessive rotation.

[0081] In some embodiments, the first limiting protrusion is disposed adjacent to one blocking portion 1358, and the third limiting protrusion is disposed adjacent to another blocking portion 1358.

[0082] In this embodiment, when the actuating part 1376 rotates to the second position, its mating groove 1377 forms a stable engagement with the second limiting protrusion, while the actuating part 1376 mechanically abuts against the adjacent blocking part 1358. Correspondingly, when the actuating part 1376 rotates to the third position, the mating groove 1377 engages with the third limiting protrusion, and the actuating part 1376 contacts the blocking part 1358 on the other side. At the two rotatable boundary positions of the actuating part 1376, the actuating part 1376 not only achieves precise positioning through the engagement of the second or third limiting protrusion with the mating groove 1377, but also obtains additional support through direct contact with the blocking part 1358, enhancing the stability of the actuating part 1376 at the boundary positions and effectively preventing displacement deviations that may occur due to external impact or long-term use. The blocking part 1358 serves as a boundary stop mechanism, setting a clear rotation range boundary for the swing plate 137 to ensure that the swing plate 137 will not exceed the safe rotation range under any circumstances. The adjacent second or third limiting protrusion is responsible for providing precise position positioning. Based on the synergistic effect of the two, both the safety of the swing plate 137 rotation and the positioning accuracy are ensured.

[0083] In some embodiments, only two limiting protrusions 1352 are provided on the base 135, and each limiting protrusion 1352 is adjacent to a blocking portion 1358. In this embodiment, when the actuating portion 1376 rotates to the first position, the mating groove 1377 on it forms a stable engagement with one limiting protrusion, while the actuating portion 1376 mechanically abuts against the adjacent blocking portion 1358; correspondingly, when the actuating portion 1376 rotates to the second position, the mating groove 1377 engages with another limiting protrusion, while the actuating portion 1376 contacts the blocking portion 1358 on the other side.

[0084] In some embodiments, the first power supply interface 1382 includes one of a USB interface, a Type-C interface, a Micro-USB interface, and a Lightning interface, and the second power supply interface 1384 includes a DC interface.

[0085] In this embodiment, the first power supply interface 1382 can be configured as a common portable device charging interface type, while the second power supply interface 1384 can be configured as a DC interface, thus accommodating both traditional device power supply and stable power supply requirements in specific scenarios. This combination allows the device to adapt to most usage environments, providing power through mobile power supplies, vehicle power supplies, or fixed power sources. It should be noted that the above-mentioned power supply interface types are merely examples, and other interface types can be used in actual implementations.

[0086] It should be noted that the gripping part 13 in this embodiment can be further expanded in terms of the number or type of power supply interfaces, for example, by providing a third power supply interface. Correspondingly, the structure of the swing plate 137 can be adjusted accordingly, for example, by adding a corresponding opening on it, and by rotating or sliding, aligning the opening with the corresponding opening on the base 135 to expose the third power supply interface. Regardless of how the number of power supply interfaces increases, the movable shielding structure of the swing plate 137 always ensures that in any working state, at most only one power supply interface is in a usable exposed state, while the remaining power supply interfaces are reliably shielded, fundamentally avoiding the risk of misoperation that may be caused by the simultaneous exposure of multiple power supply interfaces.

[0087] In some embodiments, the grip portion 13 is further provided with a battery compartment 139, which is capable of holding one or more batteries; or, the grip portion 13 may further include a battery, which may include a non-rechargeable battery or a rechargeable battery.

[0088] In this embodiment, the battery can be used as a replaceable power supply element or as a built-in power supply component. The battery can be a dry cell battery, which is conveniently installed and removed from the battery compartment 139. Dry cell batteries are inexpensive and readily available. Alternatively, the battery can be a rechargeable battery, which can be detachably installed in the battery compartment 139 or permanently installed within the base 135. The rechargeable battery can also be charged via the first power supply interface 1382 or the second power supply interface 1384.

[0089] In practical use, users can flexibly choose the power supply method according to the specific scenario. For example, this application constructs at least three complementary power supply modes: dry battery power supply is suitable for operation scenarios without external power; the TYPE-C interface can connect to portable power sources such as power banks and vehicle USB ports; and the DC interface can connect to a dedicated adapter to obtain stable power. The diverse power supply methods fully consider various practical application scenarios of the liquid extractor 1 in liquid extraction operations, ensuring that the equipment can obtain a stable power supply in most liquid extraction environments, effectively avoiding work interruptions caused by power supply problems.

[0090] Please combine Figure 14 and Figure 15 , Figure 14 for Figure 1 The diagram shows the structure of the pump at another angle. Figure 15 for Figure 1 The diagram shows the structure of F in the liquid extractor. In some embodiments, the grip 13 further includes a control switch 133, which is connected to the circuit board 138. The control switch 133 can control the circuit board 1324. The control switch 133 and the first power supply interface 1382 are located on opposite sides of the grip 13.

[0091] In this embodiment, the control switch 133 and the power supply interface are placed on both sides of the grip 13, with a certain amount of space separation. This ensures that the user will not accidentally trigger the switch when plugging or unplugging the power supply, and will not interfere with the power connection when operating the switch. This is suitable for use in scenarios that require careful operation, such as refueling, and provides the user with a safer operating space.

[0092] Please combine Figure 16 and Figure 17 , Figure 16 for Figure 14 An enlarged schematic diagram of section G in the shown liquid extractor. Figure 17 This is a schematic diagram of the liquid adding device provided in an embodiment of this application. In some embodiments, the liquid pump 1 further includes a mounting part 14, which is mounted on the tube body 12. The mounting part 14 and the pump body 11 are located at different positions on the tube body 12. The length of the tube body 12 between the mounting part 14 and the pump body 11 is variable. The mounting part 14 is used for detachable mounting to the container 2.

[0093] In this embodiment, the mounting part 14 and the pump body 11 are spaced apart along the length of the tube 12, and the effective length of the section of tube 12 between the mounting part 14 and the pump body 11 is variable. This variable length characteristic allows the user to flexibly adjust the depth of the pump body 11 inside the container 2 when inserting it. Regardless of the depth of the container 2, the user can ensure that the pump body 11 reaches the target position, such as the bottom of the container 2, through adjustment, thereby better emptying the liquid and avoiding problems such as incomplete liquid pumping or air intake caused by the pump body 11 being suspended in the air.

[0094] Furthermore, the mounting part 14 is movably mounted on the container 2, for example, by clamping or other means, and is temporarily and securely fixed to the opening, edge, or other suitable part of the container 2. This design provides an additional stable support point for the pump 1 and works in conjunction with the grip part 13 to effectively prevent the pump body 11 from deviating from its working position or colliding with the container 2 due to the shaking of the tube body 12 during the pumping process. At the same time, the detachable connection of the mounting part 14 to the container 2 simplifies the assembly and disassembly process. When it is necessary to change the container 2 or move the pumping position, the pump 1 can be quickly removed from the current container 2, improving the convenience and efficiency of use.

[0095] Therefore, the liquid extractor 1 provided in this application, based on the adjustability of the length of the tube 12 between the mounting part 14 and the pump body 11, achieves flexible adaptation to containers 2 of different depths, ensuring that the pump body 11 is always in an effective working position; at the same time, the mounting part 14 is detachably installed on the container 2, which not only achieves quick assembly and disassembly, but also provides stable support for the operation process; together with the grip part 13 that can directly control the pump body 11, the entire liquid extractor 1 is simple and efficient to operate, and stable and reliable in operation.

[0096] It is understandable that container 2 can be a barrel, box, canister, or container, etc. The liquid can be specified as needed; for example, the liquid can be a solvent such as gasoline, diesel, or kerosene. The liquid dispensing device can add liquid to the fuel tanks of equipment such as cars, motorcycles, yachts, and lawnmowers. For example, the liquid dispenser 1 can be a fuel nozzle, and container 2 can be an oil drum.

[0097] In some embodiments, the mounting part 14 is movably connected to the tube body 12, and the mounting part 14 is movable relative to the tube body 12 to be installed at different positions on the tube body 12.

[0098] In this embodiment, by setting the mounting part 14 and the tube body 12 as a movable connection, the mounting part 14 can move relative to the length direction of the tube body 12 and be fixed in different positions, thereby realizing flexible adjustment of the length of the tube body 12 between the mounting part 14 and the pump body 11. For example, the mounting part 14 is sleeved on the outer periphery of the tube body 12, and its inner wall forms a sliding fit structure with the outer wall of the tube body 12. To ensure stability during use, the mounting part 14 can be provided with a locking and unlocking mechanism. When adjustment is required, the user operates the locking and unlocking mechanism to unlock the mounting part 14, allowing it to slide along the axial direction of the tube body 12 to the target position, for example, so that the pump body 11 can just touch the bottom of the current container 2. After reaching the target position, the locking and unlocking mechanism is operated again to firmly fix the mounting part 14 to the tube body 12.

[0099] Therefore, when the mounting part 14 is in the unlocked state, it can slide freely relative to the tube body 12 for quick positioning; while when the mounting part 14 is in the locked state, the relative position between the mounting part 14 and the tube body 12 is fixed, thus ensuring stability during the liquid extraction process. Through this simple sliding, unlocking, and locking operation, the user can accurately and quickly adjust the working depth of the pump body 11 in the container 2 without the aid of tools, enabling the pump 1 to adapt to various sizes of containers 2 from shallow to deep. This not only improves the ease of operation and efficiency of the product, but also effectively prevents performance fluctuations or liquid leakage caused by the displacement of the mounting part 14 during operation through reliable locking, ensuring the stability and safety of the liquid extraction process.

[0100] In some embodiments, the mounting portion 14 includes a connecting portion 142 and a clamping portion 144 that are connected to each other. The connecting portion 142 is movably connected to the tube body 12, and the clamping portion 144 is clamped to the container 2.

[0101] In this embodiment, the connecting part 142 is movably connected to the tube body 12, allowing the entire mounting part 14 to move relative to the tube body 12 and be fixed in different positions, thereby adjusting the working depth of the pump body 11. The clamping part 144 is used to fix the pump body 11 to the container 2 by clamping. For example, the clamping part 144 can be a clamp structure that can open to fit the rim or edge of the container 2 of different thicknesses and generate sufficient clamping force when clamped, thereby stably anchoring the entire pump 1 to the container 2. This clamping and fixing method does not depend on the specific thread or size of the container 2 interface, thus having wide applicability, allowing the mounting part 14 to adapt to containers 2 of different diameters and shapes, without the need for special fixing joints for different containers 2, solving the installation problem caused by the different ports of the containers 2. Therefore, in this embodiment, through the cooperative work of the connecting part 142 and the clamping part 144 in the mounting part 14, while ensuring that the mounting part 14 as a whole is easy to adjust and position, it also provides a stable additional support point for the pumping process, independent of hand operation.

[0102] It should be noted that the clamping part 144 can also be replaced by other structures installed on the container 2. For example, the clamping part 144 can also be replaced by a suction cup adsorbed on the surface of the container 2, a magnetic structure adsorbed on the container 2 (for example, a magnet is provided on at least one of the clamping part 144 and the container 2, and a magnetic component or magnetic conductive material is provided on the other), or a snap-fit ​​structure to achieve detachable movable installation. All these methods can achieve the purpose of conveniently fixing the mounting part 14 to the container 2.

[0103] In some embodiments, the clamping part 144 is used to clamp onto the annular wall 22 surrounding the outlet 21 of the container 2.

[0104] In this embodiment, the clamping part 144 does not rely on a specific structure of the container 2 outlet 21, such as a specific thread or protrusion. Instead, it directly and firmly attaches to the annular wall 22 around the opening of the container 2 through its own clamping force. This clamping method avoids the matching problems caused by the wide variety of container 2 interface specifications. Regardless of the size or shape of the container 2 opening, as long as its annular wall 22 can be effectively clamped by the clamping part 144, a stable and reliable fixing point can be provided for the entire pump 1. Users do not need to find or switch any special connectors. They only need to open the clamping part 144 like a clamp and clamp it to the edge of the container 2 opening to complete the quick installation. This clamping method of the annular wall 22 not only ensures the stability of the installation part 14 and prevents the pump body 11 from accidentally shaking or falling off during the pumping process, but also makes it compatible with most common containers 2, thereby improving the versatility and ease of operation of the pump 1 and enhancing the user experience.

[0105] In some embodiments, the connecting portion 142 is sleeved on the tube body 12 and can slide relative to the tube body 12. The connecting portion 142 has at least one spring piece 1424, which elastically abuts against the tube body 12 to engage with the tube body 12.

[0106] For example, the connecting portion 142 includes a sleeve portion 1422 and a spring piece 1424 disposed thereon. The sleeve portion 1422 is directly sleeved onto the outer periphery of the tube body 12, forming a basis for sliding engagement with the tube body 12. The sleeve portion 1422 has a cutout 1423, and the spring piece 1424 is disposed within the space defined by this cutout 1423, with one end of the spring piece 1424 connected to the body of the sleeve portion 1422.

[0107] Correspondingly, please refer to Figure 18 and Figure 19 , Figure 18 for Figure 14 The diagram shows the structure of the mounting section in the liquid extractor. Figure 19 for Figure 18 The diagram shows a cross-sectional view of the mounting portion along the BB direction. The tube body 12 is provided with a plurality of limiting grooves 121 along its length direction. The other end of the spring piece 1424 is provided with a snap-fit ​​portion 1425 protruding towards one side of the tube body 12. The snap-fit ​​portion 1425 can be snapped into different grooves so that the mounting portion 14 is limited to different positions of the tube body 12.

[0108] In this embodiment, the sleeve portion 1422 is sleeved on the outer periphery of the tube body 12, forming a basis for sliding cooperation with the tube body 12. The sleeve portion 1422 has a hollow opening 1423, and the spring piece 1424 is disposed in the hollow opening 1423. Since one end of the spring piece 1424 is fixedly connected to the sleeve portion 1422, while the other end is a free end, the spring piece 1424 can undergo elastic deformation with the fixed end as the fulcrum when subjected to force, thereby realizing the switching between the locking and unlocking states with the outer wall of the tube body 12.

[0109] Specifically, when the mounting part 14 slides along the tube body 12, the snap-fit ​​part 1425 on the spring piece 1424 can slide sequentially across each limiting groove 121 on the surface of the tube body 12 under its elastic action. When the mounting part 14 moves to the target position, the snap-fit ​​part 1425 will accurately snap into the limiting groove 121 corresponding to that position under the restoring force of the spring piece 1424 itself. By snapping the snap-fit ​​part 1425 into different grooves, the mounting part 14 can be stably limited to different positions in the axial direction of the tube body 12, so as to achieve accurate and reliable positioning of the mounting package and effectively prevent slow sliding or accidental displacement that may occur during the liquid extraction process.

[0110] For example, during operation, the user slides the mounting part 14 relative to the tube body 12 using external force. The spring piece 1424 of the mounting part 14 can deform, causing the locking part 1425 to disengage from the currently engaged limiting groove 121 and slide relative to the tube body 12. After the user removes the external force, the spring piece 1424, by its own elastic restoring force, pushes the locking part 1425 into the limiting groove 121 corresponding to the target position, so that the connecting part 142 and the tube body 12 are mechanically interlocked at that position, and the connecting part 142 is firmly fixed.

[0111] In another example, during operation, when the user applies external force to the spring 1424, forcing it to undergo elastic deformation, the locking part 1425 disengages from the currently engaged limiting groove 121. At this time, the connecting part 142 is in an unlocked state, and the user can easily slide the entire mounting part 14 along the axial direction of the tube 12 until the target position is reached. Once the mounting part 14 has been slid to the target position (e.g., so that the pump body 11 just touches the bottom of the container 2), the user only needs to remove the external force on the spring 1424. The spring 1424, by its own elastic restoring force, pushes the locking part 1425 into the limiting groove 121 corresponding to the target position, so that the connecting part 142 and the tube 12 are mechanically interlocked at that position, and the connecting part 142 is firmly fixed.

[0112] For example, the sleeve portion 1422 and the spring piece 1424 of the connecting portion 142 can be manufactured as a single component, for example, by injection molding, which simplifies the manufacturing process, reduces the number of parts, and lowers assembly complexity and cost. Meanwhile, the design of the cutout 1423 ensures that the spring piece 1424 has the necessary space for movement and elastic travel, while avoiding structural instability or wear problems that may arise from additional parts, resulting in better durability. Furthermore, the sleeve portion 1422 and the spring piece 1424 can also be manufactured separately; this embodiment does not limit this.

[0113] In some embodiments, the mounting portion 14 further includes a flexible cover 146 connected to the connecting portion 142. The flexible cover 146 is disposed around the connecting portion 142 and is used to cover the opening of the container 2.

[0114] In this embodiment, the main function of the flexible cover 146 is to effectively shield and protect the opening of the container 2. When the mounting part 14 is fixed to the container 2 via its connecting part 142 and clamping part 144, the flexible cover 146 can simultaneously cover the opening of the container 2, effectively preventing external dust, debris, or other contaminants from falling into the container 2 through the open opening, thereby keeping the liquid inside the container 2 clean and avoiding potential oil circuit blockage or equipment damage due to impurities. The addition of the flexible cover 146 ensures that the opening of the container 2 is always protected during the liquid extraction operation of the pump 1. This is particularly important for the pump 1 used in complex environments such as outdoors and construction sites, enhancing the safety and hygiene of the pump 1.

[0115] In some embodiments, the mounting portion 14 further includes a handle 148 connected to the connecting portion 142, the handle 148 being used to slide the mounting portion 14 by an external force.

[0116] In this embodiment, the handle 148 provides the user with a clear and comfortable point of force application. When the position of the mounting part 14 needs to be adjusted, the user does not need to forcefully pinch the connecting part 142 or the sleeve part 1422, but can naturally hold or pinch the handle 148 to operate. The design of the handle 148 makes the user's grip more stable, the force application more direct, and the control more precise when performing a series of adjustment actions such as unlocking, sliding, and locking. This makes the entire device easier and more efficient in adapting to different container depths 2, helping to achieve the convenient feature of the liquid extractor 1 that requires no tools and can be operated with one hand, thus improving the ease of operation and user experience.

[0117] In some embodiments, the mounting part 14 is detachably mounted on the tube body 12 so that it can be detachably mounted and fixed at different positions on the tube body 12 at any part of the tube body 12.

[0118] In this embodiment, the mounting part 14 is configured to be completely detachably mounted on the tube body 12. Exemplarily, the mounting part 14 can be separated from and reattached to the tube body 12 via a specific connection structure (e.g., snap-fit, tight fit, binding, etc.). When the user needs to adjust the effective working depth of the pump body 11 in the container 2, the entire mounting part 14 can be removed from the tube body 12 first, and then, depending on the target depth, it can be reinstalled at another suitable position on the tube body 12, closer to or further away from the pump body 11. Finally, the mounting part 14 is fixed to the container 2. This fully detachable and reinstallable adjustment method offers a high degree of adjustment freedom, allowing the user to make large-distance, non-continuous positional changes within the total length of the tube body 12. The fully detachable design also allows the mounting part 14 and that section of the tube body 12 to be completely separated, which not only greatly facilitates cleaning, maintenance, or replacement of individual components but may also simplify the packaging and transportation of the pump 1.

[0119] In some embodiments, the pipe body 12 includes a telescopic portion 122 located between the mounting portion 14 and the pump body 11, and the length of the telescopic portion 122 is adjustable.

[0120] In this embodiment, the telescopic portion 122 is a specific area in the tube body 12 that has telescopic or folding characteristics. Exemplary implementations may include, but are not limited to, a corrugated tube structure, or a telescopic tube structure consisting of multiple layers of tube bodies 12 nested together and capable of relative sliding.

[0121] By adjusting the length of the telescopic part 122, the effective pipe length between the mounting part 14 and the pump body 11 can be directly changed, thereby achieving precise control of the working depth of the pump body 11 within the container 2. For example, when dealing with a deeper container 2, the telescopic part 122 can be stretched to a longer length; when used for a shallower container 2, it can be compressed to a shorter length.

[0122] In this embodiment, since the adjustment function is directly built into the tube body 12 itself, it does not rely on the sliding and locking mechanism of the mounting part 14 on the tube body 12, or the removal of the mounting part 14 from the tube body 12. The user can directly operate the telescopic part 122 to complete the depth adjustment, which is convenient. The telescopic part 122 (such as a corrugated pipe) itself usually has good flexibility, which also enhances the adaptability of the tube body 12 in complex usage environments to a certain extent. Therefore, this embodiment provides a technical solution for directly adjusting the length of the tube body 12, enriching the ways in which the liquid extractor 1 can adapt to containers 2 of different depths.

[0123] It should be noted that the type of the tube body 12 can be set as needed. For example, the tube body 12 can be a corrugated hose, a smooth hose (at least one of the inner and outer sides of the tube body is a smooth structure), a transparent hose, a smooth and transparent tube body, or a rigid tube.

[0124] In some embodiments, the grip 13 includes an operating lever 131 and an automatic control circuit 132. The operating lever 131 can be operated by external force to control the opening and closing of the pipeline for transmitting liquid, and the automatic control circuit 132 can automatically control the start and stop of the pump body 11.

[0125] In this embodiment, the operating lever 131 is a mechanical control component that can respond to external forces applied by the user (such as pressing, pulling, etc.) to produce displacement or state changes. This mechanical action is transmitted or converted into a control signal, thereby controlling the opening and closing of the liquid transmission pipeline, i.e., controlling the pipeline to open or close, or directly controlling the start and stop of the pump body 11, providing the user with the most direct manual operation means. The operating lever has a pipeline connected to the pipe body, which also transmits liquid, and the opening or closing of the pipeline can be controlled by the operating lever.

[0126] In addition, the grip 13 also integrates an automatic control circuit 132, which can automatically monitor specific conditions during the liquid extraction process (such as sensing that the container 2 is full of liquid) and automatically issue a command when the preset conditions are met to control the start and stop of the pump body 11, without requiring or reducing manual intervention.

[0127] By integrating the operating lever 131 and the automatic control circuit 132 into the grip 13, both manual and automatic control capabilities are achieved, allowing users to flexibly choose the control mode during operation: they can use the operating lever 131 for active on / off control to address temporary interruptions or precise flow control needs; or they can rely on the automatic control circuit 132 to achieve automated "stop when full" operation to prevent liquid spillage. This combination of manual and automatic control greatly enhances the convenience, flexibility, and safety of the pump 1, simultaneously meeting the operating habits of different users and the needs of different application scenarios. It should be noted that the grip 13 may also include only the operating lever 131 or the automatic control circuit 132; this embodiment does not limit this.

[0128] In some embodiments, the grip 13 further includes a control switch 133, which is triggered by an external force to control the operating state of the pump, including a working state and a stopped state.

[0129] In this embodiment, the control switch 133 can respond to external triggering operations (such as pressing, flicking, etc.) by the user, directly controlling the working and stopping states of the pump, thus improving operational safety and direct control. For example, when the user triggers the switch to the "working state," the entire pump 1 is powered, putting it into operation mode; while when triggered to the "stop state," the main power supply to the pump 1 is immediately cut off, causing it to stop working.

[0130] The start / stop control of the pump is integrated into the grip 13, allowing the user to easily access and operate the control switch 133 while holding the device. This is beneficial for dealing with emergencies. When it is necessary to stop the pumping operation immediately, the user does not need to look for a switch in another location and can directly and quickly cut off the power on the grip 13, shortening the emergency response time and enhancing the reliability of the pump 1 under different operating conditions.

[0131] In some embodiments, the grip portion 13 further includes a handle 134 and a base 135. The base 135 is connected to the tube body 12 via the handle 134. The operating lever 131 is movably mounted on the base 135 and is located on the same side of the base 135 as the handle 134. The control switch 133 is disposed on the base 135 and is located near the handle 134.

[0132] This embodiment achieves a clear and convenient control center within the limited space of the grip 13. Specifically, the two most critical manual control elements, the lever 131 and the control switch 133, are centrally located in the operating area near the handle 134. This allows the user to easily access and operate these two components when performing refueling operations with one hand on the handle 134. Whether it's precisely controlling the flow rate with the lever 131 or quickly triggering the control switch 133 to cut off the power in an emergency, it can be done quickly without changing the grip posture or using the other hand. It is understood that the handle 134 and the base 135 are provided with channels for liquid transfer, which communicate with the tube 12.

[0133] In some embodiments, the grip portion 13 further includes a liquid inlet tube 136 for discharging liquid. The liquid inlet tube 136 is connected to the side of the base 135 away from the handle 134. The automatic control circuit 132 includes a sensor 1322 and a control circuit 1324 that are electrically connected. The control circuit 1324 is electrically connected to the pump body 11. The sensor 1322 is installed at the front end of the liquid inlet tube 136 and is used to detect the amount of liquid being discharged. The control circuit 1324 controls the start and stop of the pump body 11 according to the amount of liquid.

[0134] In this embodiment, by mounting the sensor 1322 on the liquid filling pipe 136 and placing it at the front end, i.e., the sensor 1322 is located at the end of the liquid filling pipe 136 where the liquid is output, the automatic control circuit 132 can directly and in real time acquire the status information of the output liquid. The control circuit 1324 can automatically determine and control the operation of the pump body 11 in various ways based on the liquid volume parameters detected by the sensor 1322: for example, calculating the total output volume by accumulating the flow rate, indirectly determining the liquid level height of the target container 2 by monitoring the liquid level at the outlet 21 of the liquid filling pipe 136, or triggering the sensor to operate when the liquid level touches the sensor surface. When the control circuit 1324 determines that the liquid is full based on the signal from the sensor 1322, it will automatically cut off the power to the pump body 11 and stop the pumping operation, improving the safety and convenience of operation and effectively avoiding waste and safety hazards caused by liquid overflow. Exemplarily, the automatic control circuit 132 may also include a processing unit and corresponding control logic, etc., but this embodiment does not limit this.

[0135] The liquid extractor 1 may include one or more power supply structures. For example, the liquid extractor 1 may include at least one of battery power, TYPE-C interface power, and DC12V adapter interface power, wherein the battery can be a dry cell battery or a rechargeable battery. To prevent users from using both the TYPE-C and DC12V adapter interfaces simultaneously and to improve product safety, a swing plate is provided at each of the two ports. The swing plate can move relative to the ports, exposing one interface and blocking the other interface. That is, the swing plate can ensure that only one port is exposed at a time, and when using one port, the swing plate can block the other port, thus providing protection.

[0136] Please combine Figure 19 , Figure 19 This is a schematic diagram of the liquid adding device provided in an embodiment of this application. This application also provides a liquid adding device, which includes a container 2 and a liquid extractor 1. The container 2 is used to store liquid; the liquid extractor 1 is installed in the container 2 and is used to output the liquid from the container 2. The liquid extractor 1 can be any of the liquid extractors in the above embodiments, and will not be described further here.

[0137] In some embodiments, the container 2 is provided with an outlet 21 and an annular wall 22 that protrudes around the outlet 21, and the mounting portion 14 of the pump 1 is clamped in the annular wall 22.

[0138] In this embodiment, the mounting part 14 does not rely on a specific structure of the container 2 outlet 21, such as a specific thread or protrusion. Instead, it directly and firmly attaches to the annular wall 22 around the opening of the container 2 through its own clamping force. This clamping method avoids the matching problems caused by the wide variety of container 2 interface specifications. Regardless of the size or shape of the container 2 opening, as long as its annular wall 22 can be effectively clamped by the clamping part 144, a stable and reliable fixing point can be provided for the entire pump 1. Users do not need to find or switch any special connectors. They only need to open the clamping part 144 like a clamp and clamp it to the edge of the container 2 opening to complete the quick installation. This clamping method of the annular wall 22 not only ensures the stability of the mounting part 14 and prevents the pump body 11 from accidentally shaking or falling off during the pumping process, but also makes it compatible with most common containers 2, thereby improving the versatility and ease of operation of the pump 1 and enhancing the user experience.

[0139] It is understandable that container 2 can be a barrel, box, canister, or container, etc. The liquid can be specified as needed; for example, the liquid can be a solvent such as gasoline, diesel, or kerosene. The liquid dispensing device can add the liquid to the fuel tank of equipment such as cars, motorcycles, yachts, and lawnmowers. The liquid can also be a solvent such as urea, and the liquid dispensing device can add urea to container 2 of agricultural equipment. For example, the liquid extractor 1 can be a fuel nozzle, container 2 can be an oil drum, and the liquid dispensing device can be a fuel container.

[0140] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0141] The above provides a detailed description of the liquid extractor and liquid addition device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A liquid pump, characterized in that, include: A pump body, used to be installed inside a container to draw liquid from the container; A pipe body, connected to the pump body, for transporting liquid; as well as, A grip is connected to the end of the tube away from the pump body; the grip is connected to the pump body and can control the pump body. The gripping part includes a swing plate and multiple power supply interfaces. The multiple power supply interfaces include at least a first power supply interface and a second power supply interface of different types. The swing plate is movable. When the swing plate is moved to a first position, the swing plate exposes the first power supply interface and blocks the second power supply interface. When the swing plate is moved to a second position, the swing plate blocks the second power supply interface and exposes the first power supply interface.

2. The liquid extractor according to claim 1, characterized in that, The gripping part also includes a base and a circuit board. The circuit board is disposed in the base and has a first power supply interface and a second power supply interface. The base has a first opening and a second opening. The first opening is directly opposite the first power supply interface and the second opening is directly opposite the second power supply interface. The swing plate is rotatably connected to the base, and the swing plate can block at least one of the first opening and the second opening, or the swing plate can expose the first opening or the second opening.

3. The liquid extractor according to claim 2, characterized in that, The swing plate includes a plate body and a lever part. The plate body is disposed inside the base, and the lever part is disposed outside the base. The lever part can drive the plate body to rotate. The plate body is provided with a third opening and a fourth opening. When the third opening is directly opposite the first opening, the first power supply interface is exposed; when the fourth opening is directly opposite the second opening, the second power supply interface is exposed.

4. The liquid extractor according to claim 3, characterized in that, When the swing plate rotates to the third position, the swing plate blocks the first power supply interface and the second power supply interface.

5. The liquid extractor according to claim 4, characterized in that, The base is provided with a first limiting part, and the actuating part is provided with a second limiting part. The first limiting part and the second limiting part can be connected to limit the swing plate to at least one of the first position, the second position and the third position.

6. The liquid extractor according to claim 5, characterized in that, The first limiting part includes multiple limiting protrusions, and the second limiting part includes a mating groove, with the multiple limiting protrusions spaced apart on the base; During the rotation of the swing plate relative to the base, the mating groove can engage with any of the limiting protrusions to limit the swing plate to a first position, a second position, or a third position.

7. The liquid extractor according to claim 6, characterized in that, The swing plate also includes a rotating shaft, and the plate body and the actuating part are both connected to the rotating shaft. The actuating part and the plate body are located on both sides of the base. The actuating part includes a first end and a second end opposite to each other. The first end is connected to the rotating shaft, and the second end is provided with the mating groove on the side facing the base. The outer side of the base is provided with a plurality of limiting protrusions.

8. The liquid extractor according to claim 7, characterized in that, The base includes a first sub-shell and a second sub-shell that are separately arranged. The first sub-shell and the second sub-shell are spliced ​​together to form the base. The first sub-shell includes an outer plate and a support. The outer plate is located on the outermost side of the first sub-shell, and the support is located inside the first sub-shell and is arranged opposite to the outer plate. The bracket has a rotating hole on the side facing the outer plate, and the rotating shaft passes through the outer plate, with part of the rotating shaft located inside the rotating hole.

9. The liquid extractor according to claim 8, characterized in that, The bracket includes a sidewall located on the side of the rotating hole facing the second sub-shell, and the sidewall is provided with a guide to guide the rotating shaft to move into the rotating hole.

10. The liquid extractor according to claim 9, characterized in that, The guide portion includes an inclined surface, which is inclined from the rotating hole toward the second sub-shell and toward the direction away from the outer plate.

11. The liquid extractor according to claim 8, characterized in that, The edge of the plate body is provided with a positioning groove facing the outer plate, and the outer plate is provided with a limiting block protruding towards the positioning groove. The limiting block can be engaged with the positioning groove to restrict the rotation of the plate body; or... The edge of the plate is provided with a positioning groove facing the bracket, and the bracket is provided with a limiting block protruding towards the positioning groove. The limiting block can be engaged in the positioning groove to restrict the rotation of the plate.

12. The liquid extractor according to claim 11, characterized in that, Along the rotation direction of the plate, the positioning groove has a first groove wall and a second groove wall that are arranged opposite to each other. The first groove wall and the second groove wall are inclined and connected. The shape of the limiting block is adapted to the positioning groove. When the limiting block is located in the positioning groove, the first groove wall and the second groove wall can restrict the movement of the limiting block along the rotation direction of the plate.

13. The liquid extractor according to claim 6, characterized in that, The base is also provided with two blocking parts. The two blocking parts are spaced apart along the rotation direction of the swing plate and are located on the rotation trajectory of the swing plate to limit the rotation range of the swing plate. Multiple limiting protrusions are located between the two blocking parts.

14. The liquid extractor according to claim 13, characterized in that, The plurality of limiting protrusions include a first limiting protrusion, a second limiting protrusion and a third limiting protrusion, wherein, along the rotation direction of the swing plate, the second limiting protrusion is located between the first limiting protrusion and the third limiting protrusion; When the mating groove engages with the first limiting protrusion, the swing plate is in the first position; when the mating groove engages with the second limiting protrusion, the swing plate is in the second position; and when the mating groove engages with the third limiting protrusion, the swing plate is in the third position.

15. The liquid extractor according to claim 14, characterized in that, The first limiting protrusion is disposed adjacent to one of the blocking portions, and the third limiting protrusion is disposed adjacent to another of the blocking portions.

16. The liquid extractor according to claim 2, characterized in that, The grip also includes a control switch connected to the circuit board. The control switch is capable of controlling the circuit board. The control switch and the first power supply interface are located on opposite sides of the grip.

17. The liquid extractor according to claim 1, characterized in that, The first power supply interface includes one of the following: USB interface, Type-C interface, Micro-USB interface, and Lightning interface; the second power supply interface includes a DC interface; or, The grip also includes a battery compartment capable of holding one or more batteries; or... The grip also includes a battery, which may be a non-rechargeable battery or a rechargeable battery.

18. A liquid dispensing device, characterized in that, include: Containers for storing liquids; and, The liquid extractor as described in any one of claims 1-17 is installed in the container and used to output liquid from the container.

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