Double-non-return integrated water pump

Abstract

The utility model relates to a double-non-return integrated water pump. Comprising a one-way base, a sealing cover and a water outlet one-way valve, wherein the one-way base is provided with water inlets and water outlets which are uniformly distributed and are in one-to-one correspondence; the sealing cover is matched and connected with the one-way base and is provided with water inlet holes and water outlet holes which are corresponding; the water outlet one-way valve penetrates through the water outlets of the one-way base and is used for unidirectionally sealing the water outlets; the water inlet one-way valve is arranged at the water inlet of the one-way base in a penetrating mode and used for sealing the water inlet in a one-way mode, a water outlet cavity communicated with the water outlet hole and the water outlet is formed in the one-way base, and a non-return assembly is arranged between the one-way base and the sealing cover; the non-return assembly comprises a non-return diaphragm and a non-return spring, wherein the non-return diaphragm is located above the water outlet one-way valve and used for sealing or opening the water outlet hole and the water outlet cavity, and the two ends of the non-return spring are connected with the upper end face of the non-return diaphragm and the sealing cover respectively. The non-return spring, the non-return diaphragm and the water outlet one-way valve are in compression fit, the double-sealing effect in the water inlet direction is guaranteed, meanwhile, the structure is compact, and the function maximization is achieved through the limited space.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically to a double check pump. Background Technology

[0002] Currently, water purifiers on the market require components such as check valves, flow meters, and water pumps for their water circuit functionality. Check valves prevent water leakage when the water pump is at a low level (low water level or column height). Water pumps draw water from the tank to the desired level, making them an essential component in the water purifier industry. Existing customers face several challenges: small pumps limit the design of the entire unit due to the single-function nature of components, making it difficult to achieve efficient space optimization; the large number of components also increases costs, hindering market competitiveness. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a double check pump.

[0004] The technical solution adopted by this utility model is as follows: A double check valve integrated water pump includes a one-way base with evenly distributed and one-to-one corresponding inlet and outlet ports, a sealing cover that is connected to the one-way base and has corresponding inlet and outlet ports, an outlet check valve that passes through the outlet of the one-way base for one-way sealing of the outlet, and an inlet check valve that passes through the inlet of the one-way base for one-way sealing of the inlet.

[0005] The one-way base has a water outlet cavity that connects the water outlet hole and the water outlet. A check valve assembly is provided between the one-way base and the sealing cover. The check valve assembly includes a check diaphragm located above the water outlet one-way valve for sealing or opening the water outlet hole and the water outlet cavity, and a check spring whose two ends are respectively connected to the upper end face of the check diaphragm and the sealing cover.

[0006] Preferably, the check diaphragm includes a fixed ring portion fixed between the lower end ring surface of the sealing cover and the upper end ring surface of the one-way base and adapted to the shape of the two, a diaphragm portion located at the center of the fixed ring portion and having a water passage hole, and a connecting branch connecting the inner circumference of the fixed ring portion and the outer circumference of the diaphragm portion. The diaphragm portion is correspondingly arranged on the top of the outlet one-way valve, and the water outlet hole and the outlet cavity are sealed or opened by sealing or opening the water outlet cavity.

[0007] Preferably, the upper ring surface of the unidirectional base is provided with at least one positioning post, and the fixing ring is correspondingly provided with a positioning groove that is adapted to the shape of the positioning post and forms a positioning fit.

[0008] Preferably, the upper and lower end faces of the fixing ring are provided with sealing protrusions, and the lower end ring face of the sealing cover and the upper end ring face of the one-way base are provided with sealing grooves that are adapted to the shape of the sealing protrusions and form a sealing fit.

[0009] Preferably, a guide post is provided at the center of the diaphragm portion, the lower end of the check spring is sleeved on the outside of the guide post, and the water passage hole is located at the center of the guide post.

[0010] Preferably, the sealing cap is provided with a limiting groove at the lower end of the water outlet, which is concentric with the water outlet and has a diameter larger than the water outlet opening, and the upper end of the check spring abuts against the limiting groove.

[0011] Preferably, a rotor support is provided inside the water inlet, and a magnetic rotor is rotatably connected to the rotor support. A Hall element for detecting the rotation of the magnetic rotor is provided on one side of the sealing cover at the water inlet.

[0012] Preferably, it also includes a piston assembly that can compress and stretch to achieve water inlet and outlet, and a motor assembly for driving the piston assembly.

[0013] Preferably, the piston assembly includes a piston support, a multi-hole piston mounted on the piston support with piston holes and piston pins corresponding one-to-one with the number of water inlets, a multi-fork turntable connected to the piston pins of the multi-hole piston, and a turntable shaft passing through the multi-fork turntable.

[0014] Preferably, the motor assembly includes a motor base, a motor fixed on the motor base, and an eccentric wheel connected to the motor output shaft. The eccentric wheel is connected to the turntable shaft. When the motor starts, it drives the eccentric wheel to rotate, and through the turntable shaft and the multi-fork turntable, it drives the multi-hole piston to reciprocate vertically downward to achieve piston compression and stretching.

[0015] The beneficial effects of this utility model are as follows: the check spring, check diaphragm, and outlet check valve work together in a compression configuration to ensure a double sealing effect in the inlet direction. Simultaneously, the compact structure maximizes functionality within limited space. The water pump of this application is equipped with an outlet check valve and a check structure including a check diaphragm and a check spring, i.e., a double check structure, from the inlet to the outlet. In the stationary state when the pump is not working, the water entering through the inlet channel reaches the piston chamber, and the double check valve effectively prevents leakage within the designed height. In the working state, when the piston chamber draws in working fluid, the inlet check valve opens, allowing fluid to enter the piston chamber. When the piston chamber discharges working fluid, the outlet check valve opens. At this time, the inlet check valve closes and the outlet check valve opens, and the outlet pressure is greater than the pressure applied to the check diaphragm by the check spring, ultimately causing the fluid to leave the outlet chamber and flow out through the outlet hole. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a perspective structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded structural diagram of an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of an embodiment of the present utility model;

[0020] Figure 4 This is a fluid flow diagram of an embodiment of the present invention;

[0021] Figure 5 for Figure 3 Enlarged view of the structure at point A in the middle;

[0022] Figure 6 This is a three-dimensional structural diagram of the check valve diaphragm in an embodiment of this utility model;

[0023] Figure 7 This is a three-dimensional structural diagram of the unidirectional base in an embodiment of this utility model;

[0024] In the diagram, 1. Sealing cap; 2. One-way base; 3. Outlet one-way valve; 4. Inlet one-way valve; 5. Check diaphragm; 6. Check spring; 8. Piston bracket; 9. Multi-hole piston; 10. Multi-fork turntable; 11. Turntable shaft; 12. Base; 13. Motor; 14. Eccentric wheel; 21. Positioning post; 51. Fixing ring; 52. Diaphragm; 53. Connecting support; 71. Rotor bracket; 72. Magnetic rotor; 73. Hall effect device; 101. Inlet hole; 102. Outlet hole; 103. Limiting groove; 201. Inlet; 202. Outlet; 203. Outlet chamber; 511. Positioning groove; 512. Sealing protrusion; 521. Water passage hole; 522. Guide post. Detailed Implementation

[0025] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0026] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0027] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0028] like Figures 1 to 7 As shown in the embodiment of this utility model, a double check valve integrated water pump includes a one-way base 2 with evenly distributed and corresponding inlet 201 and outlet 202, a sealing cover 1 that is connected to the one-way base 2 and has corresponding inlet holes 101 and outlet holes 102, an outlet check valve 3 that passes through the outlet 202 of the one-way base 2 for one-way sealing of the outlet 202, and an inlet check valve 4 that passes through the inlet 201 of the one-way base 2 for one-way sealing of the inlet 201.

[0029] The one-way base 2 has a water outlet cavity 203 that connects the water outlet hole 102 and the water outlet 202. A check assembly is provided between the one-way base 2 and the sealing cover 1. The check assembly includes a check diaphragm 5 located above the water outlet one-way valve 3 for sealing or opening the water outlet hole 102 and the water outlet cavity 203, and a check spring 6 whose two ends are respectively connected to the upper end face of the check diaphragm 5 and the sealing cover 1.

[0030] This design, through the compression cooperation of the check spring, check diaphragm, and outlet check valve, ensures a double seal in the inlet direction. Simultaneously, the compact structure maximizes functionality within limited space. The pump in this application features an outlet check valve and a check structure including a check diaphragm and check spring, i.e., a double check structure, from the inlet to the outlet. In the stationary state when the pump is not operating, water enters the piston chamber through the inlet channel, and the double check valve effectively prevents leakage within the design height. In the operating state, when the piston chamber draws in working fluid, the inlet check valve opens, allowing fluid to enter the piston chamber. When the piston chamber discharges working fluid, the outlet check valve opens. At this time, the inlet check valve closes and the outlet check valve opens, and the outlet pressure exceeds the pressure applied to the check diaphragm by the check spring, ultimately causing the fluid to leave the outlet chamber and flow out through the outlet hole.

[0031] The check valve 5 includes a fixed ring portion 51 fixed between the lower end ring surface of the sealing cover 1 and the upper end ring surface of the one-way base 2 and adapted to the shape of the two; a diaphragm portion 52 located at the center of the fixed ring portion 51 and having a water passage hole 521; and a connecting branch portion 53 connecting the inner periphery of the fixed ring portion 51 and the outer periphery of the diaphragm portion 52. The diaphragm portion 52 is correspondingly arranged on the top of the outlet one-way valve 3 and the water passage hole 521 and the outlet cavity 203 are sealed or opened to achieve the sealing or opening of the outlet hole 102 and the outlet cavity 203.

[0032] This design improves the ease of assembling the check diaphragm. Simultaneously, the check diaphragm is fixed between the sealing cover and the one-way base via the fixing ring, ensuring the stability of the check diaphragm during pump operation and preventing positional displacement due to water flow impact or pressure. The connecting branch connects the fixing ring and the diaphragm while ensuring ample communication space. Multiple connecting branches can be used to improve connection stability; this embodiment specifically uses three.

[0033] At least one positioning post 21 is provided on the upper ring surface of the one-way base 2, and the fixed ring 51 is correspondingly provided with a positioning groove 511 that is adapted to the shape of the positioning post 21 and forms a positioning fit.

[0034] This design further improves the stability of the check diaphragm during pump operation, making it less prone to circumferential rotation of the fixed ring. Specifically, a through hole is provided at the center of the positioning post for the screw to pass through, and a corresponding through hole is also provided on the sealing cover, allowing the sealing cover and one-way base to be connected via a screw.

[0035] The upper and lower end faces of the fixing ring 51 are both provided with sealing protrusions 512, and the lower end ring face of the sealing cover 1 and the upper end ring face of the one-way base 2 are both provided with sealing grooves that are adapted to the shape of the sealing protrusions 512 and form a sealing fit.

[0036] This design improves the sealing stability between the retaining ring, the sealing cap, and the one-way base.

[0037] A guide post 522 is provided at the center of the diaphragm portion 52, and the lower end of the anti-reverse spring 6 is sleeved on the outside of the guide post 522. The water passage hole 521 is located at the center of the guide post 522.

[0038] This design improves the stability of the cooperation between the backstop spring and the backstop diaphragm, while also making the assembly of the backstop spring more convenient.

[0039] The sealing cover 1 has a limiting groove 103 at the lower end of the water outlet 102, which is concentric with the water outlet 102 and has a diameter larger than the opening diameter of the water outlet 102. The upper end of the anti-reverse spring 6 abuts against the limiting groove 103.

[0040] This design further improves the stability of the backstop spring's extension and retraction. At the same time, the backstop spring's limiting structure is machined on the lower end of the outlet hole, improving the ease of machining and simplifying the internal space of the pump body.

[0041] A rotor support 71 is provided inside the water inlet 101, and a magnetic rotor 72 is rotatably connected to the rotor support 71. A Hall element 73 for detecting the rotation of the magnetic rotor 72 is provided on one side of the sealing cover 1 on the water inlet 101.

[0042] This design integrates a water pump, flow meter, and check valve into a single unit, providing customers with more options for various applications. The integrated design reduces product price, resulting in significant cost savings. It maximizes functionality within the existing space without major changes to the overall size and dimensions of the existing water pump. During operation, the pump body generates self-priming pressure, drawing water from the inlet through the magnetic rotor assembly into the pump cavity. The magnetic rotor and rotor support are clearance-fitted, allowing the rotor's arc-shaped boss to rotate around its axis. As liquid passes through, it drives the magnetic rotor to rotate. The magnetic rotor blades are magnetized, and during rotation, the rotor and Hall effect sensors generate signals. The signal count corresponds to the number of rotations of the magnetic rotor blades and the number of Hall effect sensors. This Hall effect signal count accurately reflects the water flow rate, thus achieving the flow meter function.

[0043] It also includes a piston assembly that can compress and stretch to achieve water inlet and outlet, and a motor assembly for driving the piston assembly.

[0044] The piston assembly includes a piston support 8, a multi-hole piston 9 mounted on the piston support 8 with piston holes and piston pins corresponding one-to-one with the number of water inlets, a multi-forked turntable 10 connected to the piston pins of the multi-hole piston, and a turntable shaft 11 passing through the multi-forked turntable.

[0045] The motor assembly includes a motor base 12, a motor 13 fixed on the motor base 12, and an eccentric wheel 14 connected to the output shaft of the motor 13. The eccentric wheel 14 is connected to the turntable shaft 11. When the motor 13 starts, it drives the eccentric wheel 14 to rotate. The turntable shaft 11 and the multi-fork turntable 10 drive the multi-hole piston 9 to reciprocate vertically to achieve piston compression and stretching.

[0046] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A double check valve integrated water pump, comprising a one-way base (2) having evenly distributed and one-to-one corresponding inlet (201) and outlet (202), a sealing cover (1) connected to the one-way base (2) and having corresponding inlet (101) and outlet (102), an outlet check valve (3) passing through the outlet (202) of the one-way base (2) for one-way sealing of the outlet (202), and an inlet check valve (4) passing through the inlet (201) of the one-way base (2) for one-way sealing of the inlet (201), characterized in that: The one-way base (2) has a water outlet cavity (203) that connects the water outlet hole (102) and the water outlet (202). A check assembly is provided between the one-way base (2) and the sealing cover (1). The check assembly includes a check diaphragm (5) located above the outlet one-way valve (3) for sealing or opening the outlet hole (102) and the outlet chamber (203), and a check spring (6) whose two ends are respectively connected to the upper end face of the check diaphragm (5) and the sealing cover (1).

2. The integrated water pump with double check valves according to claim 1, characterized in that: The check valve diaphragm (5) includes a fixed ring (51) fixed between the lower end ring surface of the sealing cover (1) and the upper end ring surface of the one-way base (2) and adapted to the shape of the two; a diaphragm (52) located at the center of the fixed ring (51) and having a water passage hole (521); and a connecting branch (53) connecting the inner circumference of the fixed ring (51) and the outer circumference of the diaphragm (52). The diaphragm (52) is correspondingly arranged on the top of the outlet one-way valve (3) and the water passage hole (521) and the outlet cavity (203) are sealed or opened by sealing or opening the outlet hole (102) and the outlet cavity (203).

3. The integrated water pump with double check valves according to claim 2, characterized in that: The upper ring surface of the one-way base (2) is provided with at least one positioning post (21), and the fixed ring (51) is provided with a positioning groove (511) that is adapted to the shape of the positioning post (21) and forms a positioning fit.

4. The integrated water pump with double check valves according to claim 2, characterized in that: The upper and lower end faces of the fixing ring (51) are both provided with sealing protrusions (512), and the lower end ring face of the sealing cover (1) and the upper end ring face of the one-way base (2) are both provided with sealing grooves that are adapted to the shape of the sealing protrusions (512) and form a sealing fit.

5. A double check valve integrated water pump according to claim 2, characterized in that: The diaphragm section (52) is provided with a guide post (522) at its center, and the lower end of the anti-reverse spring (6) is sleeved on the outside of the guide post (522). The water passage hole (521) is located at the center of the guide post (522).

6. The double check valve integrated water pump according to claim 1, characterized in that: The sealing cover (1) has a limiting groove (103) at the lower end of the water outlet (102) that is concentric with the water outlet (102) and has a diameter larger than the opening diameter of the water outlet (102). The upper end of the anti-reverse spring (6) rests in the limiting groove (103).

7. A double check pump according to any one of claims 1-6, characterized in that: A rotor support (71) is provided inside the water inlet (101), and a magnetic rotor (72) is rotatably connected to the rotor support (71). A Hall element (73) for detecting the rotation of the magnetic rotor (72) is provided on one side of the sealing cover (1) for the water inlet (101).

8. A double check pump according to any one of claims 1-6, characterized in that: It also includes a piston assembly that can compress and stretch to achieve water inlet and outlet, and a motor assembly for driving the piston assembly.

9. A double check valve integrated water pump according to claim 8, characterized in that: The piston assembly includes a piston support (8), a multi-hole piston (9) mounted on the piston support (8) with piston holes and piston pins corresponding one-to-one with the number of inlets, a multi-fork turntable (10) connected to the piston pins of the multi-hole piston, and a turntable shaft (11) passing through the multi-fork turntable.

10. A double check valve integrated water pump according to claim 8, characterized in that: The motor assembly includes a motor base (12), a motor (13) fixed on the motor base (12), and an eccentric wheel (14) connected to the output shaft of the motor (13). The eccentric wheel (14) is connected to the turntable shaft (11). When the motor (13) starts, it drives the eccentric wheel (14) to rotate. Through the turntable shaft (11) and the multi-fork turntable (10), the multi-hole piston (9) is driven to reciprocate vertically to achieve piston compression and stretching.

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