Water pump mechanism and oral irrigator

Abstract

The utility model discloses a water pump mechanism and a water pick. The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell and a valve assembly arranged between the pump shell and the water inlet and outlet assembly. A sealing piece is further arranged between the pump shell and the water inlet and outlet assembly, the valve assembly comprises a first umbrella nail valve and a second umbrella nail valve which are contained in the sealing ring, and each of the first umbrella nail valve and the second umbrella nail valve comprises a disc-shaped umbrella part and a connecting part connected to one side of the umbrella part. The pump shell is provided with a pump cavity, a first water inlet and a first water outlet, wherein the first water inlet and the first water outlet are communicated with the pump cavity. The water inlet and outlet assembly is provided with a second water outlet and a second water inlet. The umbrella part of the first umbrella nail valve is connected with the second water inlet, and the connecting part faces the first water inlet. The umbrella part of the second umbrella nail valve is connected with the first water outlet, and the connecting part faces the second water outlet. The double-umbrella nail valve is arranged, and the opening and closing of the double-umbrella nail valve are controlled through the pressure change of the pump cavity in the pump shell, so that the water inlet and outlet effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of oral irrigator, especially to a water pump mechanism and oral irrigator. BACKGROUND

[0002] The oral irrigator is a kind of appliance that uses the impact force of water column sprayed under certain pressure to clean teeth. Generally, the water pump inside the membrane is repeatedly deformed to change the pressure inside the pump cavity to realize water absorption and water spraying, and a one-way valve is arranged to realize the one-way flow of water, to avoid the insufficient spraying force caused by pressure loss and affect the cleaning effect.

[0003] The existing one-way valve is prone to damage at the slit of the valve body after long-term use, which cannot effectively close, thereby affecting the normal use of the oral irrigator. UTILITY MODEL CONTENT

[0004] The utility model provides a water pump mechanism and oral irrigator to solve the technical problem that the existing one-way valve is prone to poor sealing effect.

[0005] The utility model provides a water pump mechanism, the water pump mechanism includes pump shell, water inlet and water outlet assembly connected with pump shell and valve assembly installed between pump shell, water inlet and water outlet assembly, the valve assembly includes sealing element and the first umbrella nail valve of containing in sealing element, second umbrella nail valve, and the first umbrella nail valve and second umbrella nail valve all include the umbrella of disc shape and the connecting portion connected in the one side of umbrella, the pump shell is equipped with the pump cavity and the first water inlet, the first water outlet in the communication of pump cavity respectively, the one end surface of water inlet and water outlet assembly to pump shell is equipped with the second water outlet and the second water inlet, the umbrella of first umbrella nail valve is connected with the second water inlet and the connecting portion is towards the first water inlet, the umbrella of second umbrella nail valve is connected with the first water outlet and the connecting portion is towards the second water outlet.

[0006] Further, the pump membrane end cover is fixedly installed between the pump membrane and the pump shell.

[0007] Further, the pump membrane is provided with a fixing ring along its circumferential direction, the pump shell is provided with a containing groove, and the fixing ring is fixedly installed in the containing groove through the pump membrane end cover.

[0008] Further, the pump shell is provided with a first connecting column for fixing the first umbrella nail valve at the first water inlet, and the first umbrella nail valve is provided with a first connecting groove matched with the first connecting column; the pump shell is provided with a second connecting column for fixing the second umbrella nail valve at the first water outlet, and the second umbrella nail valve is provided with a second connecting groove matched with the second connecting column.

[0009] Further, the pump membrane is provided with a plunger for driving the pump membrane to move on the side away from the pump shell.

[0010] Further, the sealing member is provided with a first water inlet cavity for accommodating the first umbrella valve and a first water outlet cavity for accommodating the second umbrella valve.

[0011] Further, the water inlet and outlet assembly is provided with a water inlet channel communicated with the second water inlet and a water outlet channel communicated with the second water outlet.

[0012] In another aspect, the utility model also provides a shower, including casing, water pump mechanism and power assembly, water pump mechanism and power assembly all are installed in casing inside.

[0013] Further, the power assembly includes a power member, a driving gear installed on the output end of the power member, a transmission gear connected with the driving gear, a gear shaft connected with the transmission gear, and a connecting rod connected with the gear shaft; the other end of the connecting rod is connected with the plunger of the water pump mechanism.

[0014] Further, the transmission gear is provided with an eccentric boss, and the gear shaft is installed on the eccentric boss.

[0015] The utility model has the advantages that: in the natural state, the umbrella part of the first umbrella valve covers the second water inlet, and the umbrella part of the second umbrella valve covers the first water outlet; when water needs to be introduced into the pump cavity, the pressure in the pump cavity is reduced, at this time, under the action of external pressure, the umbrella part periphery of the first umbrella valve moves away from the second water inlet to the first water inlet direction, so that the external water enters the pump cavity through the second water inlet, the sealing member and the first water inlet in turn, at the same time, the umbrella part of the second umbrella valve is tightly attached to the pump shell under the action of external pressure and completely covers the first water outlet, which is beneficial to the rapid entry of external water into the pump cavity; on the contrary, when the pump cavity sprays water outward, the pressure in the pump cavity is increased, at this time, under the action of the pressure in the pump cavity, the umbrella part of the first umbrella valve is tightly attached to the water inlet and outlet assembly and completely covers the second water inlet, and the umbrella part periphery of the second umbrella valve moves away from the first water outlet to the second water outlet direction, so that the water in the pump cavity is sprayed out through the first water outlet, the sealing member and the second water outlet in turn; the utility model controls the opening and closing of the double umbrella valves by the pressure change of the pump cavity in the pump shell, so as to achieve the effect of water inlet and outlet, and effectively guarantee the sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the perspective view of the water pump mechanism of the utility model.

[0017] Figure 2 It is the sectional view of the water pump mechanism of the utility model in the natural state.

[0018] Figure 3 It is the explosion view of the water pump mechanism of the utility model.

[0019] Figure 4 It is the perspective view of the pump shell of the water pump mechanism.

[0020] Figure 5 It is the perspective view of the sealing element of the water pump mechanism.

[0021] Figure 6 It is the perspective view of the first umbrella nail valve of the water pump mechanism.

[0022] Figure 7 It is the perspective view of the second umbrella nail valve of the water pump mechanism.

[0023] Figure 8 It is the explosion view of the oral irrigator.

[0024] Reference signs: water pump mechanism 1, pump shell 11, water inlet and outlet assembly 12, pump membrane 14, pump membrane end cover 15, plunger 16, sealing element 17, power element 21, driving gear 22, transmission gear 23, eccentric boss 24, gear rotating shaft 25, connecting rod 26, upper shell 31, lower shell 32, first water outlet 111, pump cavity 114, first connecting column 118, second connecting column 119, second water outlet 121, water outlet channel 123, water inlet channel 124, second water inlet 125, first umbrella nail valve 131, second umbrella nail valve 132, umbrella part 133, connecting part 134, fixed ring 141, first water inlet cavity 171, first water outlet cavity 172, first connecting groove 1311, second connecting groove 1321. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] The present application will be further described in detail below by specific embodiments in conjunction with the drawings.

[0027] Embodiment one:

[0028] As Figures 1-7The utility model provides a water pump mechanism, the water pump mechanism includes pump shell 11, with the water inlet and water outlet subassembly 12 of pump shell 11 connection and install between the valve subassembly of pump shell 11, water inlet and water outlet subassembly 12, the valve subassembly includes sealing piece 17 and is contained in the first umbrella nail valve 131, second umbrella nail valve 132 of sealing piece 17, and the first umbrella nail valve 131 and second umbrella nail valve 132 all include the umbrella part 133 of discoid and the connecting portion 134 connected in the umbrella part 133 one side, the pump shell 11 is equipped with the pump cavity 114 and respectively with the first water inlet (not shown in the drawing), first water outlet 111 of pump cavity 114 intercommunication, the water inlet and water outlet subassembly 12 towards the one end surface of pump shell 11 is equipped with second water outlet 121 and second water inlet 125, the umbrella part 133 of first umbrella nail valve 131 is connected with second water inlet 125 and the connecting portion 134 is towards first water inlet, the umbrella part 133 of second umbrella nail valve 132 is connected with first water outlet 111 and the connecting portion 134 is towards second water outlet 121.

[0029] In natural state, the umbrella part 133 of first umbrella nail valve 131 covers in second water inlet 125, and the umbrella part 133 of second umbrella nail valve 132 covers in first water outlet 111, when needing to fill water in pump cavity 114, by reducing the pressure in pump cavity 114, at this time, under the action of external pressure, the periphery of umbrella part 133 of first umbrella nail valve 131 moves away from second water inlet 125 to the direction of first water inlet, to make the water of outside enter pump cavity 114 in order through second water inlet 125, sealing piece 17 and first water inlet, and simultaneously, the umbrella part 133 of second umbrella nail valve 132 is tightly attached to pump shell 11 under the action of external pressure and completely covers first water outlet 111, to facilitate the water of outside to enter pump cavity 114 quickly, on the contrary, when pump cavity 114 sprays water outward, by increasing the pressure in pump cavity 114, at this time, under the action of the pressure in pump cavity 114, the umbrella part 133 of first umbrella nail valve 131 is tightly attached to water inlet and water outlet subassembly 12 and completely covers second water inlet 125, and the periphery of umbrella part 133 of second umbrella nail valve 132 moves away from first water outlet 111 to the direction of second water outlet 121, to make the water in pump cavity 114 spray out in order through first water outlet 111, sealing piece 17 and second water outlet 121, the utility model discloses a double umbrella nail valve, utilizes the pressure change of pump cavity 114 in pump shell 11 to control the switch of double umbrella nail valve, to reach the effect of water inlet and outlet, can also effectively guarantee the sealing effect, in addition, the sealing piece can effectively provide the sealing property of water pump, avoid water leakage, can isolate water inlet and water outlet simultaneously, prevent water circulation.

[0030] Embodiment two:

[0031] The pump shell 11 is connected with a pump membrane end cover 15 away from the water inlet and outlet assembly 12, and the pump membrane 14 is fixedly installed between the pump membrane end cover 15 and the pump shell 11.

[0032] In the embodiment, the pump membrane 14 is arranged, the pressure in the pump cavity 114 can be changed by extrusion or stretching of the pump membrane 14, so that the volume of the pump cavity 114 is adjusted, the water pumping and pumping functions are realized, the water pressure is changed by adjusting the deformation speed of the pump membrane 14, so that the water inlet and outlet effect is achieved; the pump membrane end cover 15 is arranged, the pump membrane 14 can be effectively fixed on the pump shell 11; the pump membrane 14 is an elastic membrane.

[0033] Embodiment three:

[0034] The pump membrane 14 is provided with a fixing ring 141 along the circumference thereof, the pump shell 11 is provided with a containing groove, and the fixing ring 141 is fixedly installed in the containing groove through the pump membrane end cover 15.

[0035] In the embodiment, compared with the traditional piston type water pump, the pump membrane 14 is prone to generate a gap due to frequent movement, which is easy to cause wear and water leakage of the water pump, the fixing ring 141 and the containing groove are arranged, the pump membrane 14 can be further fixed, the static fixation of the pump membrane 14 is realized, the gap is avoided, and the sealing performance and service life are effectively provided.

[0036] Embodiment four:

[0037] The pump shell 11 is provided with a first connecting column 118 for fixing a first umbrella nail valve 131 at the first water inlet, the first umbrella nail valve 131 is provided with a first connecting groove 1311 which is cooperated with the first connecting part 134, the pump shell 11 is provided with a second connecting column 119 for fixing a second umbrella nail valve 132 at the first water outlet 111, and the second umbrella nail valve 132 is provided with a second connecting groove 1321 which is cooperated with the second connecting part 134.

[0038] In the embodiment, specifically, the open end of the first connecting groove 1311 is arranged in the direction of the connecting part 134, and the open end of the second connecting groove 1321 is arranged in the direction of the umbrella part 133; the first umbrella nail valve 131 can be fixed at the first water inlet through the fixed connection of the first connecting groove 1311 and the first connecting column 118, the second umbrella nail valve 132 can be fixed at the first water outlet 111 through the fixed connection of the second connecting groove 1321 and the second connecting column 119, and the first umbrella nail valve 131 and the second umbrella nail valve 132 can be effectively fixed and installed.

[0039] Embodiment five:

[0040] The sealing element 17 is provided with a first water inlet chamber 171 for accommodating the first umbrella nail valve 131 and a first water outlet chamber 172 for accommodating the second umbrella nail valve 132.

[0041] In this embodiment, a first water inlet chamber 171 is provided to facilitate the connection between the first water inlet and the second water inlet 125, and a first water outlet chamber 172 is provided to facilitate the connection between the first water outlet 111 and the second water outlet 121, thereby facilitating the water inlet and outlet of the pump chamber 114.

[0042] Example 6:

[0043] The pump diaphragm 14 is also provided with a plunger 16 on the side away from the pump housing 11 for driving the pump diaphragm 14 to move.

[0044] In this embodiment, the other end of the plunger 16 is connected to the power assembly. The power assembly drives the plunger 16 to reciprocate, thereby causing the pump diaphragm 14 to be stretched or squeezed, so as to control the pressure of the pump chamber 114.

[0045] Example 7:

[0046] The water inlet and outlet assembly 12 is provided with a water inlet channel 124 connected to the second water inlet 125 and a water outlet channel 123 connected to the second water outlet 121.

[0047] In this embodiment, a water inlet channel 124 is provided for easy connection to a water tank, while a water outlet channel 123 is provided for easy connection to a nozzle, thereby enabling water from the water tank to be sprayed out from the nozzle to achieve the effect of rinsing teeth.

[0048] Example 8:

[0049] like Figures 1-8 As shown, this utility model also provides a dental flosser, including a housing, a water pump mechanism 1, and a power component; the water pump mechanism 1 and the power component are both installed inside the housing. The housing includes an upper housing 31 and a lower housing 32.

[0050] In its natural state, the umbrella part 133 of the first umbrella valve 131 covers the second inlet 125, and the umbrella part 133 of the second umbrella valve 132 covers the first outlet 111. When water needs to be introduced into the pump chamber 114, the pressure inside the pump chamber 114 is reduced. At this time, under the action of external pressure, the periphery of the umbrella part 133 of the first umbrella valve 131 moves away from the second inlet 125 and towards the first inlet, so that external water enters the pump chamber 114 after passing through the second inlet 125, the seal 17, and the first inlet in sequence. At the same time, the umbrella part 133 of the second umbrella valve 132 adheres tightly to the pump housing 11 and completely covers the first outlet 111 under the action of external pressure, which is conducive to the rapid entry of external water into the pump chamber 114. Conversely, when the pump chamber 112... 4. When water is sprayed outward, the pressure inside the pump chamber 114 is increased. At this time, under the action of the pressure inside the pump chamber 114, the umbrella part 133 of the first umbrella valve 131 is tightly attached to the water inlet and outlet assembly 12 and completely covers the second water inlet 125. The periphery of the umbrella part 133 of the second umbrella valve 132 moves away from the first water outlet 111 and towards the second water outlet 121, so that the water in the pump chamber 114 passes through the first water outlet 111, the sealing ring 17 and the second water outlet 121 in sequence and is then sprayed out. This utility model sets up double umbrella valves and uses the pressure change of the pump chamber 114 inside the pump housing 11 to control the opening and closing of the double umbrella valves, thereby achieving the effect of water inlet and outlet, while also effectively ensuring the sealing effect. In addition, the sealing ring can effectively provide the water pump with a seal and prevent water leakage.

[0051] Example 9:

[0052] The power assembly includes a power component 21, a drive gear 22 mounted on the output end of the power component 21, a transmission gear 23 connected to the drive gear 22, a gear shaft 25 connected to the transmission gear 23, and a connecting rod 26 connected to the gear shaft 25; the other end of the connecting rod 26 is connected to the plunger 16 of the water pump mechanism 1. Specifically, the transmission gear 23 is provided with an eccentric boss 24, and the gear shaft 25 is mounted on the eccentric boss 24.

[0053] In this embodiment, the power component 21 drives the drive gear 22 to rotate. The drive gear 22 meshes with the transmission gear 23, thereby driving the transmission gear 23 to rotate. The transmission gear 23 drives the gear shaft 25 to move through the eccentric boss 24. The gear shaft 25 drives the plunger 16 to reciprocate through the connecting rod 26, thereby driving the pump diaphragm 14 to squeeze or stretch through the plunger 16.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "one example," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A water pumping mechanism characterized by: The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell, and a valve assembly arranged between the pump shell and the water inlet and outlet assembly; a sealing member is further arranged between the pump shell and the water inlet and outlet assembly; the valve assembly comprises a first umbrella valve and a second umbrella valve accommodated in the sealing member; the first umbrella valve and the second umbrella valve each comprise a disc-shaped umbrella portion and a connecting portion connected to one side of the umbrella portion; the pump shell is provided with a pump cavity, a first water inlet and a first water outlet respectively communicated with the pump cavity; an end surface of the water inlet and outlet assembly facing the pump shell is provided with a second water outlet and a second water inlet; the umbrella portion of the first umbrella valve is connected with the second water inlet and the connecting portion faces the first water inlet; the umbrella portion of the second umbrella valve is connected with the first water outlet and the connecting portion faces the second water outlet.

2. The water pumping mechanism of claim 1, wherein: The pump shell is connected with a pump membrane end cover at an end away from the water inlet and outlet assembly; the pump membrane end cover and the pump shell are further fixedly installed with a pump membrane therebetween.

3. The water pumping mechanism of claim 2, wherein: The pump membrane is provided with a fixing ring along the circumferential direction thereof; the pump shell is provided with an accommodating groove; and the fixing ring is fixedly installed in the accommodating groove through the pump membrane end cover.

4. The water pumping mechanism of claim 1, wherein: The pump shell is provided with a first connecting column for fixing the first umbrella valve at the first water inlet; the first umbrella valve is provided with a first connecting groove for cooperation with the first connecting column; the pump shell is provided with a second connecting column for fixing the second umbrella valve at the first water outlet; and the second umbrella valve is provided with a second connecting groove for cooperation with the second connecting column.

5. The water pump mechanism of claim 2, wherein: The pump membrane is further provided with a plunger for driving the pump membrane to move on the side away from the pump shell.

6. The water pumping mechanism of claim 1, wherein: The sealing member is provided with a first water inlet cavity for accommodating the first umbrella valve and a first water outlet cavity for accommodating the second umbrella valve.

7. The water pumping mechanism of claim 1, wherein: The water inlet and outlet assembly is provided with a water inlet channel communicated with the second water inlet and a water outlet channel communicated with the second water outlet.

8. An oral irrigator characterized by: The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell, and a valve assembly arranged between the pump shell and the water inlet and outlet assembly; a sealing member is further arranged between the pump shell and the water inlet and outlet assembly; the valve assembly comprises a first umbrella valve and a second umbrella valve accommodated in the sealing member; the first umbrella valve and the second umbrella valve each comprise a disc-shaped umbrella portion and a connecting portion connected to one side of the umbrella portion; the pump shell is provided with a pump cavity, a first water inlet and a first water outlet respectively communicated with the pump cavity; an end surface of the water inlet and outlet assembly facing the pump shell is provided with a second water outlet and a second water inlet; the umbrella portion of the first umbrella valve is connected with the second water inlet and the connecting portion faces the first water inlet; the umbrella portion of the second umbrella valve is connected with the first water outlet and the connecting portion faces the second water outlet.

9. The oral irrigator of claim 8, wherein: The pump shell is connected with a pump membrane end cover at an end away from the water inlet and outlet assembly; the pump membrane end cover and the pump shell are further fixedly installed with a pump membrane therebetween.

10. The oral irrigator of claim 9, wherein: The pump membrane is provided with a fixing ring along the circumferential direction thereof; the pump shell is provided with an accommodating groove; and the fixing ring is fixedly installed in the accommodating groove through the pump membrane end cover. The pump shell is provided with a first connecting column for fixing the first umbrella valve at the first water inlet; the first umbrella valve is provided with a first connecting groove for cooperation with the first connecting column; the pump shell is provided with a second connecting column for fixing the second umbrella valve at the first water outlet; and the second umbrella valve is provided with a second connecting groove for cooperation with the second connecting column. The pump membrane is further provided with a plunger for driving the pump membrane to move on the side away from the pump shell. The sealing member is provided with a first water inlet cavity for accommodating the first umbrella valve and a first water outlet cavity for accommodating the second umbrella valve. The water inlet and outlet assembly is provided with a water inlet channel communicated with the second water inlet and a water outlet channel communicated with the second water outlet. The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell, and a valve assembly arranged between the pump shell and the water inlet and outlet assembly; a sealing member is further arranged between the pump shell and the water inlet and outlet assembly; the valve assembly comprises a first umbrella valve and a second umbrella valve accommodated in the sealing member; the first umbrella valve and the second umbrella valve each comprise a disc-shaped umbrella portion and a connecting portion connected to one side of the umbrella portion; the pump shell is provided with a pump cavity, a first water inlet and a first water outlet respectively communicated with the pump cavity; an end surface of the water inlet and outlet assembly facing the pump shell is provided with a second water outlet and a second water inlet; the umbrella portion of the first umbrella valve is connected with the second water inlet and the connecting portion faces the first water inlet; the umbrella portion of the second umbrella valve is connected with the first water outlet and the connecting portion faces the second water outlet. The pump shell is connected with a pump membrane end cover at an end away from the water inlet and outlet assembly; the pump membrane end cover and the pump shell are further fixedly installed with a pump membrane therebetween. The pump membrane is provided with a fixing ring along the circumferential direction thereof; the pump shell is provided with an accommodating groove; and the fixing ring is fixedly installed in the accommodating groove through the pump membrane end cover. The pump shell is provided with a first connecting column for fixing the first umbrella valve at the first water inlet; the first umbrella valve is provided with a first connecting groove for cooperation with the first connecting column; the pump shell is provided with a second connecting column for fixing the second umbrella valve at the first water outlet; and the second umbrella valve is provided with a second connecting groove for cooperation with the second connecting column. The pump membrane is further provided with a plunger for driving the pump membrane to move on the side away from the pump shell. The sealing member is provided with a first water inlet cavity for accommodating the first umbrella valve and a first water outlet cavity for accommodating the second umbrella valve. The water inlet and outlet assembly is provided with a water inlet channel communicated with the second water inlet and a water outlet channel communicated with the second water outlet. The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell, and a valve assembly arranged between the pump shell and the water inlet and outlet assembly; a sealing member is further arranged between the pump shell and the water inlet and outlet assembly; the valve assembly comprises a first umbrella valve and a second umbrella valve accommodated in the sealing member; the first umbrella valve and the second umbrella valve each comprise a disc-shaped umbrella portion and a connecting portion connected to one side of the umbrella portion; the pump shell is provided with a pump cavity, a first water inlet and a first water outlet respectively communicated with the pump cavity; an end surface of the water inlet and outlet assembly facing the pump shell is provided with a second water outlet and a second water inlet; the umbrella portion of the first umbrella valve is connected with the second water inlet and the connecting portion faces the first water inlet; the umbrella portion of the second umbrella valve is connected with the first water outlet and the connecting portion faces the second water outlet. The pump shell is connected with a pump membrane end cover at an end away from the water inlet and outlet assembly; the pump membrane end cover and the pump shell are further fixedly installed with a pump membrane therebetween. The pump membrane is provided with a fixing ring along the circumferential direction thereof; the pump shell is provided with an accommodating groove; and the fixing ring is fixedly installed in the accommodating groove through the pump membrane end cover. The pump shell is provided with a first connecting column for fixing the first umbrella valve at the first water inlet; the first umbrella valve is provided with a first connecting groove for cooperation with the first connecting column; the pump shell is provided with a second connecting column for fixing the second umbrella valve at the first water outlet; and the second umbrella valve is provided with a second connecting groove for cooperation with the second connecting column. The pump membrane is further provided with a plunger for driving the pump membrane to move on the side away from the pump shell. The sealing member is provided with a first water inlet cavity for accommodating the first umbrella valve and a first water outlet cavity for accommodating the second umbrella valve. The water inlet and outlet assembly is provided with a water inlet channel communicated with the second water inlet and a water outlet channel communicated with the second water outlet. The water pump mechanism comprises a pump shell, a water inlet and outlet assembly connected with the pump shell, and a valve assembly arranged between the pump shell and the water inlet and outlet assembly; a sealing member is further arranged between the pump shell and the water inlet and outlet assembly; the valve assembly comprises a first umbrella valve and a second umbrella valve accommodated in the sealing member; the first umbrella valve and the second umbrella valve each comprise a disc-shaped umbrella portion and a connecting portion connected to one side of the umbrella portion; the pump shell is provided with a pump cavity, a first water inlet and a first water outlet respectively communicated with the pump cavity; an end surface of the water inlet and outlet assembly facing the pump shell is provided with a second water outlet and a second water inlet; the umbrella portion of the first umbrella valve is connected with the second water inlet and the connecting

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