Piston pump with mushroom valve and oral irrigator

Abstract

The utility model discloses a piston pump with a mushroom valve and an oral irrigator, and relates to the technical field of oral irrigators, and the piston pump comprises a pump shell, a water storage cavity and a water outlet cavity are formed in the pump shell, and the water storage cavity is communicated with the water outlet cavity through a water outlet; the water inlet pipe is communicated with the water storage cavity through a water inlet; the first mushroom valve comprises a first mushroom valve body for closing or opening the water inlet and a first rod body; the second mushroom valve comprises a second mushroom valve body for closing or opening the water outlet and a second rod body; a tympanic membrane; and the driving mechanism is used for driving the tympanic membrane to deform, so that the first mushroom valve opens the water inlet and the second mushroom valve closes the water outlet, or the first mushroom valve closes the water inlet and the second mushroom valve opens the water inlet. By the adoption of the technical scheme, the water inlet and the water outlet are opened or closed through the first mushroom valve and the second mushroom valve respectively, the overall structure is stable, maintenance is easy, interference cannot be caused during water inlet and water outlet, and the water outlet efficiency and the water outlet stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral irrigators, and particularly relates to a piston pump with a mushroom valve and an oral irrigator. Background Art

[0002] An oral irrigator is an auxiliary tool for oral cleaning, which is a tool that uses the impact of pulsed water flow to clean teeth and dental floss.

[0003] In the related art, as disclosed in CN114668539B, an oral irrigator movement includes a connected upper housing and a lower housing. The upper housing is sleeved on the upper end of the lower housing and is rotationally matched therewith. An outlet cavity and a piston cavity are sequentially arranged in the upper housing from top to bottom. A piston is arranged in the piston cavity. A driving member for driving the piston to reciprocate is fixedly installed in the lower housing. A connecting member is installed between the outlet cavity and the piston cavity in the upper housing. The connecting member includes a partition plate. A valve body is arranged at the lower end of the partition plate. A valve cavity communicating with a water inlet on the circumferential side of the lower housing is arranged in the valve body. A through hole communicating with the valve cavity is opened on the partition plate. An inlet channel communicating with the valve cavity is arranged at the lower end of the valve body. The partition plate separates the outlet cavity from the piston cavity. At least one outlet channel communicating the outlet cavity with the piston cavity is opened on the partition plate outside the valve body. An upper diaphragm covering and closing the outlet channel is attached to the upper surface of the partition plate. A lower diaphragm closing the inlet channel is attached to the lower surface of the valve body. The lower diaphragm and the upper diaphragm are connected and fixed by a connecting column passing through the inlet channel, the valve cavity, and the through hole. The lower diaphragm, the connecting column, and the upper diaphragm are integrally formed soft rubber parts.

[0004] However, although the oral irrigator movement in the related art realizes one-way water inlet and one-way water outlet through an integrated structure, once a certain component is damaged, the entire integrated structure needs to be replaced, increasing the maintenance cost. At the same time, since the water inlet channel and the water outlet channel are too close, interference is easily caused during water inlet and water outlet, resulting in low water outlet efficiency and poor water outlet stability of the oral irrigator. Summary of the Utility Model

[0005] The purpose of the utility model is to address the defects and deficiencies in the prior art. The utility model provides a piston pump with a mushroom valve and an oral irrigator.

[0006] A technical solution of a piston pump with a mushroom valve provided by the utility model is as follows:

[0007] A piston pump with a mushroom valve includes: a pump housing, which has a water storage cavity and a water outlet cavity inside, and the water storage cavity and the water outlet cavity are communicated through at least one water outlet;

[0008] A water inlet pipe, which is connected to the pump housing and is communicated with the water storage cavity through at least one water inlet;

[0009] The first mushroom valve includes a first mushroom valve body located in the water storage cavity and used to close or open the water inlet, and a first rod body passing through the water inlet and extending into the water inlet pipe. The edge of the first mushroom valve body can turn outward or press against the water inlet under the action of water pressure to open or close the water inlet;

[0010] The second mushroom valve includes a second mushroom valve body located in the water outlet cavity and used to close or open the water outlet, and a second rod body passing through the water outlet and extending into the water outlet cavity. The edge of the second mushroom valve body can turn outward or press against the water outlet under the action of water pressure to open or close the water outlet;

[0011] The tympanic membrane is arranged in the water storage cavity, is arranged opposite to the water outlet cavity, and is used to close the water storage cavity; and

[0012] The driving mechanism is used to drive the tympanic membrane to deform, so as to change the capacity of the water storage cavity, so that the first mushroom valve opens the water inlet and the second mushroom valve closes the water outlet, or the first mushroom valve closes the water inlet and the second mushroom valve opens the water inlet.

[0013] Optionally, both the first mushroom valve body and the second mushroom valve body are made of elastic materials, and the thicknesses of the first mushroom valve body and the second mushroom valve both gradually decrease from the middle to both sides.

[0014] Optionally, a sealing edge is further arranged at the bottom of the edges of the first mushroom valve body and the second mushroom valve body.

[0015] Optionally, a first limiting part and a second limiting part are respectively arranged on the first rod body and the second rod body. The diameter of the first limiting part gradually decreases along the direction from the first mushroom valve body to the first rod body, and the diameter of the second limiting part gradually decreases along the direction from the second mushroom valve body to the second rod body.

[0016] Optionally, a partition is arranged in the pump housing. The partition divides the interior of the pump housing into a water storage cavity and a water outlet cavity. The water outlet is located on the partition. When the first mushroom valve closes the water outlet, the first mushroom valve body presses against the side of the partition facing the water storage cavity.

[0017] Optionally, it further includes a housing. The interior of the housing is provided with a receiving cavity having a lateral opening. The water storage cavity of the pump housing is located in the receiving cavity. At least part of the water outlet cavity of the pump housing extends out of the receiving cavity from the lateral opening of the housing, and the driving mechanism is accommodated in the receiving cavity.

[0018] Optionally, the driving mechanism includes:

[0019] A turntable gear rotatably arranged in the receiving cavity;

[0020] An eccentric wheel, coaxially arranged with the turntable gear and fixedly connected to the turntable gear;

[0021] A positioning shaft for positioning the turntable gear and the eccentric wheel, and the center of the turntable gear and the eccentric point of the eccentric wheel are both located on the positioning shaft;

[0022] A connecting sleeve is sleeved on the eccentric wheel, and a through hole for the positioning shaft to pass through is formed on its surface, and there is a gap between the connecting sleeve and the eccentric wheel, so that the eccentric wheel can rotate relative to the connecting sleeve;

[0023] A connecting rod, one end of which is fixedly connected to the connecting sleeve and the other end is fixedly connected to the eardrum; and

[0024] A driving member for driving the turntable gear to rotate, so as to drive the eccentric wheel to rotate, thereby driving the connecting sleeve and the connecting rod to reciprocate relative to the accommodating cavity.

[0025] Optionally, the driving member includes a driving motor fixedly arranged in the accommodating cavity and a transmission gear sleeved on the output shaft of the driving motor, and the transmission gear is in meshing cooperation with the turntable gear to drive the transmission gear to rotate and drive the turntable gear to rotate through the driving motor.

[0026] Optionally, a protective sleeve is sleeved outside the eccentric wheel to prevent direct contact and friction between the eccentric wheel and the connecting sleeve.

[0027] The present utility model also provides a dental irrigator, including a piston pump with a mushroom valve as described above.

[0028] After adopting the above technical solutions, the beneficial effects of the present utility model are:

[0029] When this application is in use, the driving mechanism drives the tympanic membrane to deform relative to the water outlet cavity, increasing the volume of the water outlet cavity and reducing the internal pressure of the water storage cavity. That is, at this time, the pressure in the water storage cavity is less than the pressure in the water inlet pipe, causing the edge of the first mushroom valve body to turn outwards under the action of water pressure, opening the water inlet. At the same time, since the pressure in the water storage cavity is also less than the pressure in the water outlet cavity, that is, at this time, the second mushroom valve body abuts against the water outlet, stably closing the water outlet, thereby realizing the water inlet of the water storage cavity. When the driving mechanism drives the tympanic membrane to deform relative to the water outlet cavity, reducing the volume of the water storage cavity, the internal pressure of the water storage cavity increases at this time. That is, the internal pressure of the water storage cavity is greater than the pressure in the water inlet pipe, causing the first mushroom valve body to abut against the water inlet, that is, closing the water inlet at this time. At the same time, since the internal pressure of the water storage cavity is greater than the pressure in the water outlet cavity, the edge of the second mushroom valve body turns outwards under the action of water pressure, that is, opening the water outlet, so that the water in the water storage cavity can flow into the water outlet cavity, realizing stable water outlet. Compared with the prior art, this application controls the closing and opening of the water inlet and the water outlet respectively through the first mushroom valve and the second mushroom valve, with a stable overall structure, simple maintenance, and no interference during water inlet and outlet, improving the water outlet efficiency and water outlet stability of the oral irrigator. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 is the overall structural schematic diagram of this embodiment;

[0032] Figure 2 is Figure 1 the display diagram after removing part of the outer shell;

[0033] Figure 3 Figure 2 the partial cross-sectional view of;

[0034] Figure 4 is Figure 3 the partial display diagram of;

[0035] Figure 5 is the display diagram of the first mushroom valve and the second mushroom valve in this embodiment;

[0036] Figure 6 is the schematic diagram for reflecting the cooperation relationship between the driving motor, the transmission gear and the turntable gear.

[0037] Description of reference numerals: 10, pump housing; 11, water storage chamber; 12, water outlet chamber; 13, water inlet; 14, water outlet; 15, partition; 20, water inlet pipe; 30, first mushroom valve; 31, first mushroom valve body; 32, first rod; 33, first limiting portion; 34, sealing edge; 40, second mushroom valve; 41, second mushroom valve body; 42, second rod; 43, second limiting portion; 50, tympanic membrane; 60, driving mechanism; 61, turntable gear; 62, eccentric wheel; 63, positioning shaft; 64, connecting sleeve; 65, connecting rod; 66, driving motor; 67, transmission gear; 68, protective sleeve; 100, housing. Detailed implementation manners

[0038] The following will combine the attached drawings in the embodiments of the present utility model Figures 1-6 to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0039] It should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "back", "side", "circumferential", etc. of the present utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms such as "first" and "second" are only used to distinguish multiple components or structures with the same or similar structures, and do not represent a special limitation on the setting order or connection relationship.

[0040] This embodiment relates to a piston pump with a mushroom valve. Referring to Figures 1-6 , it includes a pump housing 10, a water inlet pipe 20, a first mushroom valve 30, a second mushroom valve 40, a tympanic membrane 50 and a driving mechanism 60. Among them, the inside of the pump housing 10 has a water storage chamber 11 and a water outlet chamber 12, and the water storage chamber 11 and the water outlet chamber 12 are communicated through at least one water outlet 14. The water inlet pipe 20 is fixedly connected to the side wall of the pump housing 10 and is communicated with the water storage chamber 11 through at least one water inlet 13, and is used for conveying flushing water (or flushing liquid) to the water storage chamber 11.

[0041] In this embodiment, the number of both the water inlets 13 and the water outlets 14 is multiple. In other embodiments, the number of the water inlets 13 and the water outlets 14 can also be one, and no more limitations are made here.

[0042] The first mushroom valve 30 is arranged at the connection between the water inlet pipe 20 and the water storage cavity 11, and is used to close or open the water inlet 13 so that the water inlet pipe 20 can convey the dental flushing water to the water storage cavity 11. The first mushroom valve 30 includes a first mushroom valve body 31 located in the water storage cavity 11 and used to close or open the water inlet 13, and a first rod body 32 passing through the water inlet 13 and extending into the water inlet pipe 20. The edge of the first mushroom valve body 31 can be turned outwards or pressed against the water inlet 13 under the action of water pressure, so as to open or close the water inlet 13.

[0043] The second mushroom valve 40 is arranged at the connection between the water storage cavity 11 and the water outlet cavity 12, and is used to close or open the water outlet 14 so that the dental flushing water in the water storage cavity 11 can smoothly flow into the water outlet cavity 12. The second mushroom valve 40 includes a second mushroom valve body 41 located in the water outlet cavity 12 and used to close the water outlet 14, and a second rod body 42 passing through the water outlet 14 and extending into the water outlet cavity 12. The edge of the second mushroom valve body 41 can be turned outwards or pressed against the water outlet 14 under the action of water pressure, so as to open or close the water outlet 14.

[0044] The tympanic membrane 50 is fixedly installed in the water storage cavity 11, is arranged opposite to the water outlet cavity 12, and is used to close the water storage cavity 11 to ensure the sealing performance of the water storage cavity 11. In this embodiment, the tympanic membrane 50 is made of EPDM material, so that the tympanic membrane 50 has high elasticity and durability. In other embodiments, the tympanic membrane 50 can also be made of other materials with high elasticity and durability, which will not be limited here.

[0045] The driving mechanism 60 is used to drive the tympanic membrane 50 to deform so that the capacity of the water storage cavity 11 changes, that is, the capacity of the water storage cavity 11 becomes larger or smaller, so that the first mushroom valve 30 opens the water inlet 13 and the second mushroom valve 40 closes the water outlet 14, or the first mushroom valve 30 closes the water inlet 13 or the second mushroom valve 40 opens the water inlet 13.

[0046] It can be understood that during use, the driving mechanism 60 drives the tympanic membrane 50 to deform, changing the volume of the water storage cavity 11. When the volume of the water storage cavity 11 increases, the pressure inside the water storage cavity 11 decreases, making the pressure inside the water storage cavity 11 less than the pressure inside the water inlet pipe 20. As a result, the edge of the first mushroom valve body 31 turns outward under the pressure of the water pressure inside the water inlet pipe 20, that is, the first mushroom valve body 31 opens the water inlet 13. At the same time, since the pressure inside the water storage cavity 11 is also less than the pressure inside the water outlet cavity 12, the edge of the second mushroom valve body 41 presses tightly against the water outlet 14, that is, at this time, the second mushroom valve 40 closes the water outlet 14, thus realizing stable water inlet into the water storage cavity 11. When the driving mechanism 60 continues to drive the tympanic membrane 50 to deform until the volume of the water storage cavity 11 decreases, at this time, the pressure inside the water storage cavity 11 increases, making the pressure inside the water storage cavity 11 greater than the pressure inside the water inlet pipe 20. As a result, the edge of the first mushroom valve body 31 presses tightly against the water inlet 13 under the action of the water pressure, that is, the second mushroom valve body 41 closes the water outlet 14. At the same time, since the pressure inside the water storage cavity 11 is also greater than the pressure inside the water outlet cavity 12, the edge of the second mushroom valve body 41 turns outward under the action of the water pressure, that is, at this time, the second mushroom valve 40 opens the water outlet 14, so that the flushing water in the water storage cavity 11 can smoothly flow into the water outlet cavity 12, thus realizing stable water outlet of the water storage cavity 11.

[0047] Furthermore, both the first mushroom valve body 31 and the second mushroom valve body 41 are elastically arranged, and the thicknesses of both the first mushroom valve body 31 and the second mushroom valve body 41 are gradually decreasing from the middle to both sides.

[0048] It can be understood that through the above settings, the first mushroom valve 30 and the second mushroom valve 40 can be restored after deforming under the action of the water pressure, thus ensuring the sealing performance of the water inlet 13 and the water outlet 14.

[0049] Furthermore, a sealing edge 34 is also provided at the bottom of the edges of the first mushroom valve body 31 and the second mushroom valve body 41. Through the setting of the sealing edge 34, the first mushroom valve body 31 and the second mushroom valve body 41 can stably close the water inlet 13 and the water outlet 14, further ensuring the sealing performance of the water inlet 13 and the water outlet 14.

[0050] Furthermore, a first limiting portion 33 and a second limiting portion 43 are respectively provided on the first rod body 32 and the second rod body 42. The diameter of the first limiting portion 33 gradually decreases along the direction from the first mushroom valve body 31 to the first rod body 32, and the diameter of the second limiting portion 43 gradually decreases along the direction from the second mushroom valve body 41 to the second rod body 42.

[0051] It can be understood that by adopting the first limiting part 33 and the second limiting part 43 arranged as above, the limiting and fixing of the first mushroom valve body 31 and the second mushroom valve body 41 can be realized, so that the first mushroom valve body 31 and the second mushroom valve body 41 are not easily displaced, that is, the first mushroom valve 30 and the second mushroom valve 40 can stably open or close the water inlet 13 and the water outlet 14.

[0052] Further, a partition 15 is arranged in the pump housing 10. The partition 15 divides the interior of the pump housing 10 into a water storage chamber 11 and a water outlet chamber 12. The water outlet 14 is located on the partition 15. When the first mushroom valve 30 closes the water outlet 14, the first mushroom valve body 31 abuts against the side of the partition 15 facing the water storage chamber 11.

[0053] It can be understood that through the arrangement of the partition 15, interference between the water storage chamber 11 and the water outlet chamber 12 can be avoided. At the same time, by arranging the water outlet 14 on the partition 15, the first mushroom valve body 31 can stably abut against the partition 15 under the action of water pressure, so as to stably close the water outlet 14.

[0054] Further, the piston pump with a mushroom valve provided in this embodiment further includes a housing 100. An accommodating cavity with a lateral opening is arranged inside the housing 100. The water storage chamber 11 of the pump housing 10 is located in the accommodating cavity. At least a part of the water outlet chamber 12 of the pump housing 10 extends out of the accommodating cavity from the lateral opening of the housing 100, and the driving mechanism 60 is accommodated in the accommodating cavity.

[0055] It can be understood that through the arrangement of the housing 100, the fixing and protection of the pump housing 10 can be realized, and at the same time, the protection of the driving mechanism 60 can also be realized, so that the driving mechanism 60 is not easily affected by the irrigating water, and the service life of the driving mechanism 60 is prolonged, that is, the service life of the whole piston pump is prolonged.

[0056] Further, the driving mechanism 60 includes a turntable gear 61, an eccentric wheel 62, a positioning shaft 63, a connecting sleeve 64, a connecting rod 65, and a driving member. Among them, the turntable gear 61 is rotatably disposed in the accommodating cavity, and the turntable gear 61 is located on one side of the pump housing 10. The eccentric wheel 62 is coaxially arranged with the turntable gear 61 and fixedly connected to the turntable gear 61. The positioning shaft 63 is used to position the turntable gear 61 and the eccentric wheel 62 so that the turntable gear 61 and the eccentric wheel 62 can rotate stably, and the center of the turntable gear 61 and the eccentric point of the eccentric wheel 62 are both located on the positioning shaft 63. The connecting sleeve 64 is sleeved outside the eccentric wheel 62, and a through hole for the positioning shaft 63 to pass through is provided on its surface, and there is a gap between the connecting sleeve 64 and the eccentric wheel 62, so that the eccentric wheel 62 can rotate relative to the connecting sleeve 64, thereby driving the connecting sleeve 64 to perform a reciprocating motion. One end of the connecting rod 65 is fixedly connected to the connecting sleeve 64, and the other end of the connecting rod 65 is fixedly connected to the tympanic membrane 50. The driving member is used to drive the turntable gear 61 to rotate, so as to drive the eccentric wheel 62 to rotate, thereby driving the connecting sleeve 64 and the connecting rod 65 to perform a reciprocating motion relative to the accommodating cavity, that is, driving the tympanic membrane 50 to deform, so that the capacity of the water storage cavity 11 continuously changes.

[0057] Furthermore, the driving member includes a driving motor 66 fixedly disposed in the accommodating cavity and a transmission gear 67 sleeved on the output shaft of the driving motor 66. The transmission gear 67 is in meshing engagement with the turntable gear 61 to drive the transmission gear 67 to rotate and drive the turntable gear 61 to rotate through the driving motor 66.

[0058] It can be understood that by driving the transmission gear 67 to rotate through the driving motor 66, the turntable gear 61 is driven to rotate, and the eccentric wheel 62 is driven to rotate. Since the movement track of the eccentric wheel 62 is an ellipse, the eccentric wheel 62 will drive the connecting sleeve 64 to perform a reciprocating motion relative to the accommodating cavity during the movement, that is, drive the connecting rod 65 to perform a reciprocating motion relative to the accommodating cavity, so that the tympanic membrane 50 continuously deforms under the action of the connecting rod 65, and the capacity of the water storage cavity 11 continuously changes, thereby realizing continuous water inlet and outlet.

[0059] Further, to prevent the eccentric wheel 62 from being worn and damaged due to contact friction with the connecting sleeve 64, in this embodiment, a protective sleeve 68 is also fixedly sleeved outside the eccentric wheel 62 to prevent contact friction between the eccentric wheel 62 and the connecting sleeve 64 through the protective sleeve 68, thereby realizing the protection of the eccentric wheel 62.

[0060] In addition, this embodiment also provides a dental irrigator, including a piston pump with a mushroom valve as described above.

[0061] The above is only used to illustrate the technical solution of the present utility model rather than to limit it. Any other modifications or equivalent substitutions made by those of ordinary skill in the art to the technical solution of the present utility model shall be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.

Claims

1. A piston pump with a mushroom valve, characterized in that: include: A pump housing (10) having a water storage chamber (11) and a water outlet chamber (12) therein, wherein the water storage chamber (11) and the water outlet chamber (12) are connected via at least one water outlet (14); A water inlet pipe (20) connected to the pump housing (10) and connected to the water storage chamber (11) via at least one water inlet (13); The first mushroom valve (30) comprises a first mushroom valve body (31) located in the water storage chamber (11) and used for closing or opening the water inlet (13), and a first rod (32) passing through the water inlet (13) and extending into the water inlet pipe (20), wherein the edge of the first mushroom valve body (31) can be turned outward or pressed against the water inlet (13) under the action of water pressure to realize opening or closing of the water inlet (13); The second mushroom valve (40) comprises a second mushroom valve body (41) located in the water outlet chamber (12) and used for closing or opening the water outlet (14), and a second rod body (42) passing through the water outlet (14) and extending into the water outlet chamber (12), wherein the edge of the second mushroom valve body (41) can be turned outward or pressed against the water outlet (14) under the action of water pressure to realize opening or closing of the water outlet (14); A tympanic membrane (50) is disposed in the water storage cavity (11), is arranged opposite to the water outlet cavity (12), and is used to seal the water storage cavity (11); as well as The driving mechanism (60) is used to drive the eardrum (50) to deform so as to change the capacity of the water storage chamber (11), thereby causing the first mushroom valve (30) to open the water inlet (13) and the second mushroom valve (40) to close the water outlet (14), or the first mushroom valve (30) to close the water inlet (13) and the second mushroom valve (40) to open the water inlet (13).

2. A piston pump with a mushroom valve according to claim 1, characterized in that: The first mushroom valve body (31) and the second mushroom valve body (41) are both made of elastic material, and the thickness of the first mushroom valve body (31) and the second mushroom valve (40) are both gradually reduced from the middle to both sides.

3. A piston pump with a mushroom valve according to claim 2, characterized in that: The bottoms of the edges of the first mushroom valve body (31) and the second mushroom valve body (41) are also provided with sealing edges (34).

4. A piston pump with a mushroom valve according to claim 1, characterized in that: The first rod body (32) and the second rod body (42) are respectively provided with a first limiting portion (33) and a second limiting portion (43); the diameter of the first limiting portion (33) is gradually reduced along the direction of the first mushroom valve body (31) toward the first rod body (32); and the diameter of the second limiting portion (43) is gradually reduced along the direction of the second mushroom valve body (41) toward the second rod body (42).

5. A piston pump with a mushroom valve according to claim 1, characterized in that: A partition (15) is arranged inside the pump housing (10), and the partition (15) divides the interior of the pump housing (10) into a water storage chamber (11) and a water outlet chamber (12). The water outlet (14) is located on the partition (15), and when the first mushroom valve (30) closes the water outlet (14), the first mushroom valve body (31) is closely attached to a side of the partition (15) facing the water storage chamber (11).

6. A piston pump with a mushroom valve according to claim 1, characterized in that: The pump housing (100) further comprises a housing (100), wherein a housing having a lateral opening is provided inside the housing (100), a water storage chamber (11) of the pump housing (10) is located in the housing chamber, a water outlet chamber (12) of the pump housing (10) at least partially extends out of the housing chamber from the lateral opening of the housing (100), and the driving mechanism (60) is accommodated in the housing chamber.

7. A piston pump with a mushroom valve according to claim 6, characterized in that: The driving mechanism (60) comprises: A turntable gear (61) rotatably disposed in the accommodating chamber; An eccentric wheel (62) is coaxially arranged with the turntable gear (61) and fixedly connected with the turntable gear (61); A positioning shaft (63) for positioning the turntable gear (61) and the eccentric wheel (62), wherein the center of the turntable gear (61) and the eccentric point of the eccentric wheel (62) are both located on the positioning shaft (63); A connecting sleeve (64) is sleeved on the eccentric wheel (62), a through hole for the positioning shaft (63) to pass through is opened on its surface, and there is a gap between the connecting sleeve and the eccentric wheel (62), so that the eccentric wheel (62) can rotate relative to the connecting sleeve (64); A connecting rod (65), one end of which is fixedly connected to the connecting sleeve (64) and the other end of which is fixedly connected to the eardrum (50); and The driving member is used to drive the rotating disk gear (61) to rotate, so as to drive the eccentric wheel (62) to rotate, thereby driving the connecting sleeve (64) and the connecting rod (65) to perform reciprocating motion relative to the accommodating chamber.

8. A piston pump with a mushroom valve according to claim 7, characterized in that: The driving member comprises a driving motor (66) fixedly arranged in the accommodating cavity and a transmission gear (67) sleeved on the output shaft of the driving motor (66); the transmission gear (67) meshes with the turntable gear (61) so that the driving motor (66) drives the transmission gear (67) to rotate and drives the turntable gear (61) to rotate.

9. A piston pump with a mushroom valve according to claim 7, characterized in that: The outer shell of the eccentric wheel (62) is provided with a protective sleeve (68) for preventing the eccentric wheel (62) from directly contacting and rubbing with the connecting sleeve (64).

10. A water flosser, characterized in that: It comprises a piston pump with a mushroom valve as described in any one of claims 1 to 9.

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