A scale-resistant water pump with water storage and drainage function

Abstract

This invention relates to the field of water pump technology, specifically to an anti-scaling water pump with a water storage and return function. It includes a mounting housing, on which a miniature DC water pump, an outlet pipe, and a pumping pipe are mounted. It also includes a water storage and return structure located at the inlet end of the miniature DC water pump. The water storage and return structure includes a return cylinder; a piston movably mounted within the return cylinder; an electric telescopic rod for moving the piston; and two sets of one-way valve assemblies with different directions of action. The beneficial effects of this invention are: after the water pump stops, the electric telescopic rod drives the piston to reciprocate within the return cylinder, drawing water from the miniature DC water pump and outlet pipe along the upper one-way valve assembly, and then pumping the drawn water, along with the water in the pumping pipe, back into the water source along the lower one-way valve assembly. This prevents water residue in the water pump after shutdown, significantly reducing scale formation and extending the service life of the water pump.

Description

Technical Field

[0001] This invention relates to the field of water pump technology, specifically to an anti-scaling water pump with a water storage and drainage function. Background Technology

[0002] An electric water pump is a electrically driven mechanical device primarily used to extract liquids from a water source and transport them to a designated location. Its core function is to use a motor to drive an impeller, generating centrifugal force or negative pressure to achieve the intake and discharge of liquids.

[0003] For example, patent CN218325124U discloses a water pump, including a main component, a pump body, and a water outlet connector. The main component has a placement surface and a hanging structure. The pump body is disposed within the main component, and an inlet connector is connected to the input end of the pump body. The water outlet connector is rotatably or detachably connected to the main component and can be connected to the output end of the pump body. The water outlet connector is provided with a water outlet pipe and has a first position state and a second position state, which can be switched between. Switching the water outlet connector to different position states increases the diversity of water pump installation methods.

[0004] As in the prior art of the aforementioned patent, water inevitably remains in the pipeline and pump body after the pump is stopped. The water in the pipeline is in a stagnant state, and the dissolved calcium, magnesium and other minerals in the water will form insoluble substances such as calcium carbonate and calcium sulfate and adhere to the pipe wall. Moreover, the water in the pipeline may become a breeding ground for microorganisms. The metabolic products of microorganisms combine with minerals to form a more complex scale layer. In addition, the pump is in a stopped state for most of the time during use. Therefore, most of the scale is formed during the water residue stage when the pump is stopped. Therefore, there is an urgent need for a scale-preventing pump with a water storage and drainage function to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a scale-resistant water pump with a water storage and drainage function to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a scale-resistant water pump with water storage and drainage function, comprising a mounting housing, wherein a miniature DC water pump, an outlet pipe and a pumping pipe are provided on the mounting housing, and a water storage and drainage structure is provided at the inlet end of the miniature DC water pump;

[0007] The water storage and drainage structure includes a drainage cylinder; a piston movably installed in the drainage cylinder; an electric telescopic rod for driving the piston to move; and two sets of one-way valve assemblies with different directions of action.

[0008] The water storage and drainage structure has two working states: water storage and drainage state and water pumping state. In the water storage and drainage state: after the machine stops, the electric telescopic rod drives the piston to move back and forth in the drainage cylinder, sucking the water in the miniature DC water pump and the outlet pipe along a set of one-way valve assemblies, and then pushing the sucked water along with the water in the pumping pipe back to the water source along another set of one-way valve assemblies. In the water pumping state: the piston resets and adjusts the direction of action of the two sets of one-way valve assemblies to the opposite direction to the water storage and drainage state.

[0009] Preferably, the outlet end of the micro DC water pump is connected to the outlet pipe via a water pipe, the inlet end of the micro DC water pump is connected to a set of one-way valve assemblies via a water pipe, and another set of one-way valve assemblies is connected to the pumping pipe.

[0010] Preferably, the two sets of one-way valve assemblies are located above and below the end of the return and discharge cylinder, respectively. In the water return and discharge state, the water stored in the micro DC water pump and the water outlet pipe can enter the return and discharge cylinder through the upper one-way valve assembly and be discharged through the lower one-way valve assembly. A water passage that cooperates with the two sets of one-way valve assemblies is opened on the inner side of the end of the return and discharge cylinder.

[0011] Preferably, the one-way valve assembly includes a mounting base, a valve seat is rotatably mounted inside the mounting base, and a one-way component is provided inside the valve seat for restricting the direction of water flow.

[0012] Preferably, a transmission gear is provided at the end of the valve seat, and a transmission rack is movably mounted on the mounting base, with the transmission rack meshing with the transmission gear. The end of the transmission rack away from the transmission gear is inserted into the return cylinder.

[0013] Preferably, the transmission rack is squeezed by the piston to drive the valve seat to rotate, and a reset torsion spring is fitted at the end of the valve seat, located outside the transmission gear, to drive the valve seat to reset.

[0014] Preferably, the water pumping pipe is provided with a filter structure, and the bottom of the mounting housing is provided with a snap-fit ​​cavity for inserting the filter structure and a pipeline guide groove communicating with the snap-fit ​​cavity.

[0015] Preferably, the filter structure includes a filter tube and a threaded cap that is threadedly connected to the filter tube. A snap-fit ​​seat is fixedly fitted inside the filter tube, and a filter cotton roller is rotatably installed inside the snap-fit ​​seat.

[0016] Preferably, the filter structure further includes a one-way transmission component, and a flap assembly is provided on the threaded cover. When the stored water is drained, the flap assembly is pushed by the water flow and can drive the filter cotton roller to rotate in one direction through the one-way transmission component.

[0017] Preferably, the bottom of the card holder is provided with a support grid for supporting the filter cotton roller and cleaning the filter surface of the filter cotton roller when the filter cotton roller rotates.

[0018] In the above technical solution, the beneficial effects of the present invention are as follows: After the water pump stops, the piston is driven by the electric telescopic rod to move back and forth in the return cylinder, and the water stored in the micro DC water pump and the outlet pipe is drawn along the upper one-way valve assembly. The drawn water, together with the water stored in the pumping pipe, is pushed back into the water source along the lower one-way valve assembly, which avoids water residue in the water pump after the machine stops, thereby greatly reducing the formation of scale and improving the service life of the water pump. During the pumping state, the action direction of the two sets of one-way valve assemblies can be adjusted by the piston pressing, ensuring the smooth flow of water during pumping.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0020] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall assembled structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure at the bottom of the mounting housing of the present invention;

[0024] Figure 3 This is a schematic diagram of the exploded structure of the top component of the housing of the present invention;

[0025] Figure 4 This is a schematic diagram of the bottom structure of the tray cover of the present invention;

[0026] Figure 5 This is a schematic diagram of the overall structure of the water storage and drainage structure of the present invention;

[0027] Figure 6 This is a side view of the one-way valve assembly of the present invention.

[0028] Figure 7 This is a schematic diagram of the overall exploded structure of the one-way valve assembly of the present invention;

[0029] Figure 8 This is a structural schematic diagram of the installation position of the unidirectional component of the present invention;

[0030] Figure 9 This is a schematic diagram of the working state of the one-way component and piston during water storage and drainage in this invention;

[0031] Figure 10 This is a schematic diagram of the working state of the one-way component and piston during water pumping in this invention;

[0032] Figure 11 This is a schematic diagram of the cross-sectional structure of the filter of the present invention;

[0033] Figure 12 This is a schematic diagram of the bottom structure of the water guide frame of the present invention;

[0034] Figure 13 This is a schematic diagram of the card holder of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] In the diagram: 1. Mounting housing; 2. Tray cover; 3. Top cover; 4. Computer board; 5. Water outlet pipe; 6. Miniature DC water pump; 7. Water storage and return structure; 71. Electric telescopic rod; 72. Piston; 73. Return cylinder; 74. One-way valve assembly; 741. Mounting base; 742. Valve seat; 743. Transmission gear; 744. Return torsion spring; 745. Transmission rack; 746. Sealing end cap; 747. One-way component; 8. Middle section water pipe; 9. Filter structure; 91. Filter tube; 92. Threaded cap; 93. Snap-fit ​​seat; 94. Filter cotton roller; 95. One-way transmission assembly; 96. Water guide frame; 97. Lower flap; 98. Upper flap; 99. Drain nozzle; 910. Support grille; 10. End water guide pipe; 11. Snap-fit ​​cavity; 12. Elastic claw; 13. Pipeline guide groove. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0038] Please see Figure 1-13 The present invention provides a technical solution: a scale-resistant water pump with water storage and drainage function, including a mounting housing 1, on which a micro DC water pump 6, a water outlet pipe 5 and a water pumping pipe are provided, and also includes a water storage and drainage structure 7, which is provided at the water inlet end of the micro DC water pump 6.

[0039] The water storage and drainage structure 7 includes a drainage cylinder 73; a piston 72, which is movably installed in the drainage cylinder 73; an electric telescopic rod 71, used to drive the piston 72 to move; and two sets of one-way valve assemblies 74 with different directions of action.

[0040] The water storage and drainage structure 7 has two working states: water storage and drainage state and water pumping state. In the water storage and drainage state, after the machine stops, the electric telescopic rod 71 drives the piston 72 to move back and forth in the drainage cylinder 73, sucking the water stored in the micro DC water pump 6 and the outlet pipe 5 along a set of one-way valve assemblies 74, and then pushing the sucked water along with the water stored in the pumping pipe back to the water source along another set of one-way valve assemblies 74. In the water pumping state, the piston 72 resets and adjusts the direction of action of the two sets of one-way valve assemblies 74 to the opposite direction to the water storage and drainage state.

[0041] The scale-resistant water pump with water storage and drainage function also includes: a tray cover 2, which is snapped onto the top of the mounting housing 1, and an "8"-shaped outer shell decorative piece is provided between the mounting housing 1 and the tray cover 2; a tray decorative piece is snapped onto one side of the top of the tray cover 2, and a top cover 3 is snapped onto the other side; a computer board 4 is fixedly installed inside the top cover 3, and a display panel is snapped onto the top; the water outlet pipe 5 passes through the top cover 3 and the display panel and is fixedly fitted onto the tray cover 2; a storage battery is snapped into the inside of the mounting housing 1; the computer board 4 is electrically connected to the micro DC water pump 6, the electric telescopic rod 71 and the storage battery.

[0042] Specifically, in the water return and discharge state: after the pump stops, the electric telescopic rod 71, controlled by the computer board 4, drives the piston 72 to reciprocate several times in section S inside the return and discharge cylinder 73. In this state, water can flow into the return and discharge cylinder 73 from the outside along the upper one-way component 747, and water can also flow into the outside from the inside of the return and discharge cylinder 73 via the lower one-way valve assembly 74. When the piston 72 reciprocates, it draws water from the micro DC water pump 6 and the outlet pipe 5 along the upper one-way valve assembly 74, and draws the water drawn from the return and discharge cylinder 73 along the lower one-way valve assembly 74. The water stored in the pumping pipe is pumped back into the water source, thus preventing water residue in the pump after shutdown and significantly reducing scale formation. Pumping state: After the stored water is drained, the electric telescopic rod 71 drives the piston 72 to return to the initial state under the control of the computer board 4. At this time, the piston 72 abuts against the inner side of the end of the return cylinder 73. The piston 72 presses against the inner side of the end of the return cylinder 73, and adjusts the action direction of the two sets of one-way valve assemblies 74 to the opposite direction of the stored water return state. The two sets of one-way valve assemblies 74 are connected through the water passage on the inner side of the end of the return cylinder 73 to ensure the smooth flow of water during pumping.

[0043] Compared with the prior art, the present invention proposes an anti-scaling water pump with a water storage and return function. The piston 72 is driven by an electric telescopic rod 71 to move back and forth in the return cylinder 73. The piston draws water from the micro DC water pump 6 and the outlet pipe 5 along the upper one-way valve assembly 74, and then pushes the drawn water, along with the water in the pumping pipe, back into the water source along the lower one-way valve assembly 74. This avoids water residue in the water pump after shutdown, thereby significantly reducing scale formation and improving the service life of the water pump. During the pumping process, the piston 72 can be used to adjust the direction of action of the two sets of one-way valve assemblies 74 to ensure unobstructed water flow during pumping.

[0044] As a preferred technical solution in this embodiment, the outlet end of the micro DC water pump 6 is connected to the outlet pipe 5 through a water pipe, and the inlet end of the micro DC water pump 6 is connected to a set of one-way valve assemblies 74 through a water pipe. Another set of one-way valve assemblies 74 is connected to the suction pipe. Specifically, in the pumping state, the micro DC water pump 6, controlled by the computer board 4, can draw water from the water source along the two connected sets of one-way valve assemblies 74 and the suction pipe, and discharge it along the outlet pipe 5. In the water storage return state, after the micro DC water pump 6 stops, the water storage return structure 7 can press the water stored in the pipeline and the micro DC water pump 6 back to the water source, which can greatly reduce the formation of scale. It should be noted that there is no drinking water in the micro DC water pump 6 after the water storage return. Therefore, the micro DC water pump 6 is preferably a self-priming water pump to meet the normal pumping needs in the absence of priming water.

[0045] As a preferred technical solution in this embodiment, the two sets of one-way valve assemblies 74 are located above and below the end of the return cylinder 73, respectively. In the water return state, the water stored in the micro DC water pump 6 and the outlet pipe 5 can enter the return cylinder 73 along the upper one-way valve assembly 74 and be discharged along the lower one-way valve assembly 74. The inner side of the end of the return cylinder 73 is provided with a water passage that cooperates with the two sets of one-way valve assemblies 74. Specifically, the installation position and direction of action of the two sets of one-way valve assemblies 74 are restricted to ensure that when the water is returned, the water stored in the micro DC water pump 6 and the outlet pipe 5 can be sucked by the upper one-way valve assembly 74 and the water can be pushed back to the water source along the lower one-way valve assembly 74. After the water return is completed, the piston 72 resets and can adjust the direction of action of the two sets of one-way valve assemblies 74 to the opposite direction to the water return state, and connect the two sets of one-way valve assemblies 74 through the water passage to ensure the smooth flow of water in the pumping state.

[0046] As a preferred technical solution of this embodiment, the one-way valve assembly 74 includes a mounting base 741, a valve seat 742 is rotatably mounted inside the mounting base 741, and a one-way component 747 is provided inside the valve seat 742 for restricting the direction of water flow. Specifically, the valve seat 742 is rotatably mounted in the mounting base 741 and can adaptively adjust its direction according to the pumping state and the water storage and discharge state, thereby achieving the restriction of the direction of water flow.

[0047] As a preferred embodiment, a transmission gear 743 is provided at the end of the valve seat 742, and a transmission rack 745 is movably mounted on the mounting base 741. The transmission rack 745 meshes with the transmission gear 743, and the end of the transmission rack 745 away from the transmission gear 743 is inserted into the return cylinder 73. Specifically, when switching from the water storage return state to the water pumping state, the piston 72 gradually moves towards the inner side of the end of the return cylinder 73, and the piston 72 presses the transmission rack 745 to retract into the mounting base 741. The valve seat 742 is driven to rotate by the transmission gear 743. When the piston 72 abuts against the inner side of the end of the return cylinder 73, the valve seat 742 completes a 180° rotation, thereby reversing the action direction of the two sets of one-way valve assemblies 74 to ensure unobstructed water flow during pumping. It should be noted that the transmission rack 745 is inserted into the return cylinder 73. To achieve a seal at the contact position between the transmission rack 745 and the return cylinder 73, a rubber sealing ring that mates with the transmission rack 745 is nested at the end of the return cylinder 73.

[0048] As a preferred technical solution in this embodiment, the transmission rack 745, when squeezed by the piston 72, can drive the valve seat 742 to rotate. A return torsion spring 744, located outside the transmission gear 743, is fitted onto the end of the valve seat 742 to drive the valve seat 742 to return to its original position. Specifically, as shown... Figure 9 As shown, in the water storage and discharge state, section S is the reciprocating movement area of ​​piston 72. When switching from the water pumping state to the water storage and discharge state, piston 72 gradually moves from the position abutting against the inner side of the end of the discharge cylinder 73 to section S. Piston 72 releases the pressure on the transmission rack 745 and applies torque to valve seat 742 through return torsion spring 744, causing valve seat 742 to rotate 180°, changing the direction of action of valve seat 742, and ensuring the smooth flow of water during water storage and discharge. The one-way valve assembly 74 also includes a sealing end cap 746, which is fixedly installed at both ends of the mounting base 741 to restrict the position of valve seat 742 and return torsion spring 744. Both ends of valve seat 742 and the inner wall of sealing end cap 746 are provided with pawls to restrict the valve seat 742 from excessive rotation under the torque of return torsion spring 744.

[0049] In the prior art, water pumps generally have two installation methods: one is to install them directly at the mouth of the bottled water container, with the water pump pipe extending into the container; the other is to place the water pump on a countertop and extend the water pump pipe from the mouth of the container into the container. However, common water pumps cannot meet the requirements of the above two installation methods. Therefore, the following embodiments are proposed to solve the above problems.

[0050] In another embodiment of the present invention, a filter structure 9 is provided on the water pumping pipe. The bottom of the mounting housing 1 is provided with a snap-fit ​​cavity 11 for the filter structure 9 to be inserted into and a pipeline guide groove 13 communicating with the snap-fit ​​cavity 11. Specifically, a rubber plug-in ring is nested on the mounting housing 1 at the top of the snap-fit ​​cavity 11. The rubber plug-in ring is connected to the one-way valve assembly 74 inside the lower part of the mounting housing 1 through a connector and a water pipe. Several elastic claws 12 are provided on the periphery of the bottom of the snap-fit ​​cavity 11. A middle section water pipe 8 is detachably installed on the top of the filter structure 9, and an end water guide pipe 10 is detachably installed on the bottom. The middle section water pipe 8 and the end water guide pipe 10 together form the water pumping pipe. A snap-fit ​​ring is provided on the upper half of the periphery of the filter structure 9.

[0051] When the water pump is placed on the countertop: connect the end of the middle section water pipe 8 away from the filter structure 9 to the rubber plug ring through the connector, and snap the upper part of the middle section water pipe 8 into the pipe guide groove 13. Then, snap the filter structure 9 into the mouth of the bottled water, and then extend the end water pipe 10 into the bottle. When pumping water, the water can be filtered through the filter structure 9, or the filter structure 9 can be omitted and the middle section water pipe 8 can be directly extended into the bottle.

[0052] The water pump is directly installed at the opening of the bottled water container: the upper part of the filter structure 9 is snapped into the snap-fit ​​cavity 11, and the snap-fit ​​ring on the periphery of the filter structure 9 is hooked by the elastic claw 12 to achieve a stable connection between the filter structure 9 and the mounting housing 1. At this time, the top of the filter structure 9 is connected to the rubber plug ring, and the water pump can be directly snapped into the opening of the bottled water container through the filter structure 9.

[0053] As can be seen from the above embodiments, after the filter structure 9 has been working for a long time, its filter surface will be covered with impurities, which will not only reduce the filtration effect of water, but also increase the pressure when pumping water. Therefore, we propose the following embodiments to solve the above problems.

[0054] In another embodiment of the present invention, the filter structure 9 includes a filter tube 91 and a threaded cap 92 threadedly connected to the filter tube 91. A snap-fit ​​seat 93 is fixedly fitted inside the filter tube 91, and a filter cotton roller 94 is rotatably installed inside the snap-fit ​​seat 93. Specifically, a connector is provided on the top of the threaded cap 92 for connecting to the middle water pipe 8. An installation chamber that mates with the snap-fit ​​seat 93 is opened on the upper part of the inner side of the filter tube 91, and an annular chamber is opened on the lower part for snapping into the mouth of the bottled water. A drain nozzle 99 is fixedly installed on the top of the annular chamber for connecting the installation chamber to the end water guide pipe 10. The top of the drain nozzle 99 is umbrella-shaped, and several water passage holes are opened on the periphery of the lower edge of the bulk container. When the water pump is pumping water, the water enters the installation chamber through the end water guide pipe 10 and the drain nozzle 99, is filtered by the filter cotton roller 94, and enters the middle water pipe 8 through the connector on the threaded cap 92. When the stored water is discharged, the returned water can also backwash the filter surface below the filter cotton roller 94.

[0055] As a preferred embodiment, the filter structure 9 further includes a one-way transmission assembly 95. A flap assembly is provided on the threaded cover 92. When water is drained, the flap assembly is pushed by the water flow and can drive the filter cotton roller 94 to rotate unidirectionally via the one-way transmission assembly 95. Specifically, the filter structure 9 also includes a water guide frame 96, which is fixedly installed on the inner side of the top of the threaded cover 92 at a position corresponding to the connector. The flap assembly includes a lower flap 97, which is hinged to the bottom of the water guide frame 96 via a pivot. Both ends of the lower flap 97 are provided with torsion springs to drive the lower flap 97 to close at the bottom of the water guide frame 96. An upper flap 98 is hinged inside the lower flap 97, and the upper flap 98 can only rotate upwards inside the lower flap 97. The one-way transmission assembly 95 consists of a set of transmission sprockets. It consists of a set of one-way ratchet gears and a set of transmission chains. The transmission sprocket is fixedly mounted on the rotating shaft of the lower flap 97, and the one-way ratchet gear is fixedly mounted on the end of the filter cotton roller 94. The transmission chain is meshed and mounted on the outside of the transmission sprocket and the one-way ratchet gear. When the water is stored and returned, the water flow forces the lower flap 97 to flip downward. When the lower flap 97 flips downward, it can drive the filter cotton roller 94 to rotate and move by an angle through the one-way transmission component 95. When the lower flap 97 is reset, it is restricted by the one-way ratchet gear. At this time, the lower flap 97 does not drive the filter cotton roller 94 to rotate. Thus, the filter cotton roller 94 can be driven to rotate every time the water is stored and returned. The filter surface of the filter cotton roller 94 is adjusted by the support grid 910 and the filter surface of the filter cotton roller 94 is frequently adjusted to ensure the filtration effect of the water during pumping.

[0056] As a preferred technical solution in this embodiment, a support grid 910 is provided at the bottom of the card holder 93 to support the filter cotton roller 94 and clean the filter surface of the filter cotton roller 94 when the filter cotton roller 94 rotates. Specifically, when the stored water is discharged, the filter cotton roller 94 rotates, and the impurities on the filter surface of the filter cotton roller 94 can be scraped and cleaned by the support grid 910. The filter cotton roller 94 can frequently adjust the filter surface to ensure the filtration effect of water during pumping.

[0057] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A scale-resistant water pump with water storage and drainage function, comprising a mounting housing (1), wherein a miniature DC water pump (6), an outlet pipe (5), and a pumping pipe are mounted on the mounting housing (1), characterized in that, It also includes a water storage and drainage structure (7), which is located at the inlet end of the micro DC water pump (6); The water storage and drainage structure (7) includes a drainage cylinder (73); a piston (72) which is movably installed in the drainage cylinder (73); an electric telescopic rod (71) for driving the piston (72) to move; and two sets of one-way valve assemblies (74) with different directions of action. The water storage and drainage structure (7) has two working states: water storage and drainage state and water pumping state. Water storage and drainage state: After the machine stops, the electric telescopic rod (71) drives the piston (72) to move back and forth in the drainage cylinder (73), and draws water from the micro DC water pump (6) and the outlet pipe (5) along a set of one-way valve assemblies (74), and pushes the drawn water along with the water in the pumping pipe back to the water source along another set of one-way valve assemblies (74). Water pumping state: The piston (72) resets and adjusts the action direction of the two sets of one-way valve assemblies (74) to the opposite direction to the water storage and drainage state. The one-way valve assembly (74) includes a mounting base (741), a valve seat (742) is rotatably mounted inside the mounting base (741), and a one-way component (747) is provided inside the valve seat (742) for restricting the direction of water flow; a transmission gear (743) is provided at the end of the valve seat (742), and a transmission rack (745) is movably mounted on the mounting base (741), and the transmission rack (745) meshes with the transmission gear (743), and the end of the transmission rack (745) away from the transmission gear (743) is inserted into the return cylinder (73); the transmission rack (745) can drive the valve seat (742) to rotate when squeezed by the piston (72), and a reset torsion spring (744) located outside the transmission gear (743) is fitted at the end of the valve seat (742) for driving the valve seat (742) to reset.

2. A scale-resistant water pump with water storage and drainage function according to claim 1, characterized in that, The outlet end of the micro DC water pump (6) is connected to the outlet pipe (5) through a water pipe, and the inlet end of the micro DC water pump (6) is connected to a set of one-way valve assemblies (74) through a water pipe. Another set of one-way valve assemblies (74) is connected to the pumping pipe.

3. A scale-resistant water pump with water storage and drainage function according to claim 1, characterized in that, The two sets of one-way valve assemblies (74) are located above and below the end of the return cylinder (73), respectively. When the water is in the return state, the water stored in the micro DC water pump (6) and the water outlet pipe (5) can enter the return cylinder (73) along the upper one-way valve assembly (74) and be discharged along the lower one-way valve assembly (74). A water passage is provided on the inner side of the end of the return cylinder (73) to cooperate with the two sets of one-way valve assemblies (74).

4. A scale-resistant water pump with water storage and return function according to claim 1, characterized in that, The water pumping pipe is provided with a filter structure (9), and the bottom of the mounting housing (1) is provided with a snap-fit ​​cavity (11) for the filter structure (9) to be inserted and a pipeline guide groove (13) connected to the snap-fit ​​cavity (11).

5. A scale-resistant water pump with water storage and drainage function according to claim 4, characterized in that, The filter structure (9) includes a filter tube (91) and a threaded cap (92) that is threadedly connected to the filter tube (91). A snap-fit ​​seat (93) is fixedly fitted inside the filter tube (91), and a filter cotton roller (94) is rotatably installed inside the snap-fit ​​seat (93).

6. A scale-resistant water pump with water storage and drainage function according to claim 5, characterized in that, The filter structure (9) also includes a one-way transmission assembly (95). A flap assembly is provided on the threaded cover (92). The flap assembly includes a water guide frame (96) and a lower flap (97) hinged to the bottom of the water guide frame (96). Torsion springs are provided at both ends of the lower flap (97). An upper flap (98) that can only rotate upwards is hinged inside the lower flap (97). When the stored water is drained, the flap assembly is pushed by the water flow. The lower flap (97) flips downwards and drives the filter cotton roller (94) to rotate in one direction through the one-way transmission assembly (95). The one-way transmission assembly (95) consists of a transmission sprocket, a one-way ratchet, and a transmission chain. The transmission sprocket is fixed to the shaft of the lower flap (97). The one-way ratchet is fixed to the end of the filter cotton roller (94). The transmission chain is meshed and fitted around the transmission sprocket and the one-way ratchet.

7. A scale-resistant water pump with water storage and drainage function according to claim 6, characterized in that, The bottom of the card holder (93) is provided with a support grid (910) for supporting the filter cotton roller (94) and cleaning the filter surface of the filter cotton roller (94) when the filter cotton roller (94) rotates.

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