Pressing valve for oral irrigator and double-water-tank oral irrigator

Abstract

The utility model provides a pressing valve for a water pick and a double-water-tank water pick. The pressing valve for the oral irrigator comprises a valve body and a valve element. The valve body comprises a main part, and a first inlet part, a second inlet part and an outlet part which extend from the main part. The outlet portion is located between the first inlet portion and the second inlet portion in the axial direction of the main portion. The valve element is movably arranged in the valve body, a spring is arranged between the valve element and the valve body, and the position of the valve element in the valve body can be changed by pressing the valve element so that the first inlet part or the second inlet part can be blocked. The double-water-tank oral irrigator comprises the pressing valve for the oral irrigator, a first water tank, a second water tank, a water conduit, a pump assembly and a nozzle. The first inlet part is connected to the first water tank, the second inlet part is connected to the second water tank, and one end of the water conduit is connected to the outlet part. The pump assembly is connected to the other end of the water conduit and a spraying port of the oral irrigator, and the spraying port is connected with the nozzle.

Description

Technical Field

[0001] The present application relates to the technical field of water flossers, and in particular to a press valve for water flossers and a double-tank water flosser. Background Art

[0002] The water flosser is an auxiliary tool for cleaning the oral cavity, which uses pulsed water flow to clean teeth and gaps between teeth. The main function of mouthwash (gargle) is to clean the oral cavity, cover up bad breath caused by bacteria or yeast decomposing food residues, and leave a comfortable and refreshing feeling in the mouth. The two functions complement each other, and users often rinse their mouths with mouthwash after using the water flosser to rinse their teeth. However, the water flosser and mouthwash (usually in bottles) take up space, and their travel portability needs to be improved.

[0003] The patent with the authorization announcement number CN213130038U discloses a double-tank water flosser, which is designed with two water tanks and two water pipes in the water flosser to be able to load different liquids to meet the needs of users. However, its structure is complex, the water pipes occupy a large space, the switching parts that control the outflow of liquid will cause wear to its water pipes, and the stability and durability need to be improved. Utility Model Content

[0004] In order to solve or alleviate at least one of the problems mentioned in the background technology, the present application provides a press valve for a water flosser and a double-tank water flosser.

[0005] The press valve for the water flosser provided in the present application includes:

[0006] A valve body, the valve body comprising a main portion and a first inlet portion, a second inlet portion and an outlet portion extending from the main portion, wherein the outlet portion is located between the first inlet portion and the second inlet portion in the axial direction of the main portion;

[0007] A valve core is movably arranged in the valve body, a spring is arranged between the valve core and the valve body, and the valve core can change its position in the valve body by being pressed to achieve blocking of the first inlet portion or the second inlet portion.

[0008] In at least one embodiment, the inner cavity of the main part includes a main cavity and a first cavity and a second cavity respectively arranged on both axial sides of the main cavity, the main cavity is connected to the outlet portion, the first cavity is connected to the first inlet portion, and the second cavity is connected to the second inlet portion. The diameters of the first cavity and the second cavity are both smaller than the diameter of the main cavity, a first axial end surface is formed between the main cavity and the first cavity, and a second axial end surface is formed between the main cavity and the second cavity.

[0009] The valve core includes a first sealing portion and a second sealing portion. The first sealing portion can be pressed onto the first axial end surface and block the first cavity. The second sealing portion can be pressed onto the second axial end surface and block the second cavity.

[0010] In at least one embodiment, the valve core includes:

[0011] a first push rod, wherein the first sealing portion radially protrudes from the first push rod;

[0012] The second push rod is connected to the first push rod, and the second sealing portion radially protrudes from the second push rod.

[0013] In at least one embodiment, the first push rod is slidably arranged in the second push rod, a first spring is arranged axially between the first push rod and the second push rod, an end portion of one end of the second push rod is provided with a second push rod clamping portion extending radially inwardly thereof, and an end portion of one end of the first push rod is provided with a first push rod clamping portion extending radially outwardly thereof, so that when the first push rod and the second push rod move toward each other, the first spring is compressed, and after the first push rod and the second push rod move away from each other due to the thrust of the first spring, the first push rod clamping portion conflicts with the second push rod clamping portion to prevent the first push rod from slipping out of the second push rod.

[0014] In at least one embodiment, a second spring is provided between the second push rod and the first axial end face, the push valve further comprises a guide rail portion, a rotating portion, and a push rod portion, the rotating portion and the push rod portion are inserted into the guide rail portion, the push rod portion extends from the guide rail portion, the rotating portion presses against the second push rod, and the push valve is switched between a press-lock state and a press-pop-up state by pressing the push rod portion.

[0015] In the push-lock state, the first sealing portion blocks the first inlet portion, and the outlet portion communicates with the second inlet portion. In the push-pop state, the second sealing portion blocks the second inlet portion, and the outlet portion communicates with the first inlet portion.

[0016] In at least one embodiment, the first inlet portion and the second inlet portion are located at the bottom of the valve body.

[0017] The double water tank water flosser provided in this application includes:

[0018] A push valve for a water flosser as described above;

[0019] a first water tank, the first inlet portion being connected to the first water tank;

[0020] a second water tank, the second inlet portion being connected to the second water tank;

[0021] A water diversion pipe, one end of which is connected to the outlet;

[0022] A pump assembly, the pump assembly comprising a pressure chamber, the pressure chamber being connected to the other end of the water diversion pipe and the spray outlet of the water flosser;

[0023] A nozzle is connected to the ejection port.

[0024] In at least one embodiment, the pump assembly includes a pressure chamber, one end of which is connected to the water diversion pipe and introduces the liquid in the press valve into the pressure chamber, and a first one-way valve is provided between the water diversion pipe and the pressure chamber.

[0025] The other end of the pressure chamber is connected to the spray port and allows the liquid in the pressure chamber to spray out of the oral irrigator through the spray port. A second one-way valve is provided between the pressure chamber and the spray port.

[0026] A first one-way valve is arranged between the water diversion pipe and the pressure chamber, and a second one-way valve is arranged between the pressure chamber and the spray port.

[0027] In at least one embodiment, the pump assembly comprises:

[0028] Gear shaft;

[0029] An eccentric sleeve, the eccentric sleeve being fixedly connected to the gear shaft;

[0030] A transmission rod, one end of which is sleeved on the eccentric shaft sleeve, and the other end of which is connected to a diaphragm, and the diaphragm forms one side of the pressure chamber.

[0031] In at least one embodiment, the first water tank and the second water tank are respectively provided with a liquid replenishing port.

[0032] The press valve provided in the embodiment of the present application can stably realize the selection of liquid circulation in the valve without wearing out the water guide tube in the oral irrigator. The structure is stable and durable and has a long service life.

[0033] The first water tank provided in the embodiment of the present application can store water for flushing teeth, and the second water tank can store water for mouthwash. The user can select liquid by controlling the press valve, for example, using mouthwash for rinsing the mouth after flushing teeth, which is highly portable. The present application only uses one water pipe instead of two water pipes (water pipes) as in the background art, and the structure is relatively simple, and the space allocation is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A front view of a double-tank oral irrigator according to an embodiment of the present application is shown.

[0035] Figure 2 A cross-sectional view of a double-tank water flosser according to an embodiment of the present application is shown.

[0036] Figure 3 A schematic structural diagram of a pump assembly of a dual-tank oral irrigator according to an embodiment of the present application is shown.

[0037] Figure 4 An axonometric view of a press valve for a dental flosser according to an embodiment of the present application is shown.

[0038] Figure 5 A cross-sectional view of a push valve for a dental flosser including a first inlet portion and a second inlet portion according to an embodiment of the present application is shown.

[0039] Figure 6 A cross-sectional view including an outlet portion of a press valve for a dental flosser according to an embodiment of the present application is shown.

[0040] Figure 7 A schematic structural diagram of a guide rail portion, a rotating portion, and a push rod portion of a press valve for a water flosser according to an embodiment of the present application is shown.

[0041] Figure 8 A cross-sectional view of a double-tank oral irrigator provided with a push valve according to an embodiment of the present application is shown.

[0042] Description of Reference Numerals

[0043] 100 push valve; 110 outlet; 120 first inlet; 130 second inlet; 140 valve body; 141 main part; 1411 main cavity; 1412 first cavity; 1413 second cavity; 1414 first axial end surface; 1415 second axial end surface; 150 valve core; 151 first sealing part; 152 second sealing part; 153 first push rod; 1531 first push rod clamping part; 154 second push rod; 1541 second push rod clamping part; 161 first spring; 170 guide rail part; 171 first guide rail; 172 second guide rail; 173 guide rail transition slope; 180 rotating part; 181 inserting part; 182 inserting part transition slope; 190 push rod part;

[0044] 210 first water tank; 211 first liquid replenishing port; 220 second water tank; 221 second liquid replenishing port;

[0045] 300 water pipes;

[0046] 400 pump assembly; 410 pressure chamber; 411 first one-way valve; 412 second one-way valve; 420 gear shaft; 421 gear; 430 eccentric bushing; 440 transmission rod; 450 diaphragm; 460 transmission gear;

[0047] 500: nozzle; 510: nozzle;

[0048] 610 battery; 620 motor. DETAILED DESCRIPTION

[0049] The exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible methods of the present application, nor to limit the scope of the present application.

[0050] Embodiments of the present application provide a push valve for a water flosser (hereinafter sometimes referred to as a “push valve”) and a double-tank water flosser.

[0051] See also Figure 4 , Figure 5 and Figure 6 The push valve 100 may include a valve body 140 and a valve core 150. The valve body 140 includes a main portion 141 and a first inlet portion 120, a second inlet portion 130 and an outlet portion 110 extending from the main portion 141. In the axial direction of the main portion 141, the outlet portion 110 is located between the first inlet portion 120 and the second inlet portion 130. The valve core 150 is movably disposed in the valve body 140, and a spring is disposed between the valve core 150 and the valve body 140. The valve core 150 can change its position in the valve body 140 by being pressed to achieve blocking of the first inlet portion 120 or the second inlet portion 130, so that the flow direction of the liquid in the valve body 140 can be controlled.

[0052] It can be understood that the present application applies the press valve 100 to the water flosser, the liquid switching process is simple, and the water supply pipe 300 of the double water tank water flosser is not worn (see Figure 3 , introduced later), the structure is stable and durable, and the service life is long.

[0053] In one embodiment of the present application, see Figure 5 , Figure 6 The inner cavity of the main part 141 may include a main cavity 1411 and a first cavity 1412 and a second cavity 1413 respectively arranged on both axial sides of the main cavity 1411. The main cavity 1411 is connected to the outlet portion 110, the first cavity 1412 is connected to the first inlet portion 120, and the second cavity 1413 is connected to the second inlet portion 130. The diameters of the first cavity 1412 and the second cavity 1413 may be smaller than the diameter of the main cavity 1411, a first axial end surface 1414 is formed between the main cavity 1411 and the first cavity 1412, and a second axial end surface 1415 is formed between the main cavity 1411 and the second cavity 1413.

[0054] The valve core 150 may include a first sealing portion 151 and a second sealing portion 152. The first sealing portion 151 can be pressed against the first axial end surface 1414 and block the first cavity 1412, and the second sealing portion 152 can be pressed against the second axial end surface 1415 and block the second cavity 1413, so as to block the corresponding first cavity 1412 or second cavity 1413 by moving the valve core, thereby controlling the flow direction of the liquid in the valve body 140.

[0055] In one embodiment of the present application, see Figure 5 The valve core 150 includes a first push rod 153 and a second push rod 154. The first sealing portion 151 radially protrudes from the first push rod 153, the second push rod 154 is connected to the first push rod 153, and the second sealing portion 152 radially protrudes from the second push rod 154. Exemplarily, the first sealing portion 151 may be a cylindrical structure disposed at the end of the first push rod 153, and the second sealing portion 152 may be a flange structure disposed at the end of the second push rod 154.

[0056] In one embodiment of the present application, see Figure 5 The first push rod 153 is slidably disposed in the second push rod 154. For example, the second push rod 154 is provided with an axial cavity. ... Figure 5 The right end of the push rod 154 slides into the shaft cavity of the second push rod 154.

[0057] A first spring 161 may be disposed axially between the first push rod 153 and the second push rod 154. Figure 5 The left end of the first push rod 153 is provided with a second push rod clamping portion 1541 extending radially inwardly thereof. Figure 5 The end portion (right end) of the push rod is provided with a first push rod clamping portion 1531 extending radially outward thereof, so that when the first push rod 153 and the second push rod 154 move toward each other, the first spring 161 is compressed. After the first push rod 153 and the second push rod 154 move away from each other due to the push force of the first spring 161, the first push rod clamping portion 1531 conflicts with the second push rod clamping portion 1541 to prevent the first push rod 153 from slipping out of the second push rod 154.

[0058] In one embodiment of the present application, see Figure 5 A second spring 162 is disposed between the second push rod 154 and the first axial end surface 1414 . For example, the second spring 162 may abut against the first axial end surface 1414 and the second sealing portion 152 .

[0059] The present application may include a push-to-pop-out switching mechanism connected to the valve core 150 to realize manual control of the station in the push valve. For example, the push-to-pop-out switching mechanism can be similar to the push-to-pop-out structure of a push-type ballpoint pen, which can realize two states of push-to-lock and push-to-pop-out, corresponding to the two states of the push valve 100, namely, blocking the first inlet 120 and blocking the second inlet 130. The present application applies the push-to-pop-out switching mechanism to the valve structure of the oral irrigator, which is convenient for manually switching the flow state of the liquid in the valve, and is easy to operate.

[0060] Further, see Figure 7 The push-to-pop switching mechanism may include a guide rail portion 170 , a rotating portion 180 and a push rod portion 190 .

[0061] The guide rail portion 170 is fixedly mounted on the valve body 140, and the inner wall surface of the guide rail portion 170 is provided with a plurality of first guide rails 171 and a plurality of second guide rails 172 alternately arranged around the axis, the first guide rail 171 is longer than the second guide rail 172, and a guide rail transition inclined surface 173 is provided between the first guide rail 171 and the second guide rail 172. The extension direction of the first guide rail 171 and the second guide rail 172 can be parallel to the axis.

[0062] The rotating part 180 is arranged inside the guide rail part 170, and the outer wall surface of the rotating part 180 is provided with a plurality of insertion parts 181 arranged around the axis. As the rotating part 180 rotates, the plurality of insertion parts 181 can switch between inserting the plurality of first guide rails 171 and inserting the plurality of second guide rails 172. The end of one end of the insertion part 181 can have an insertion part transition slope 182, and the other end of the rotating part 180 can abut against the second push rod 154. The insertion depth of the insertion part 181 is changed by the depth of the first guide rail 171 and the second guide rail 172, thereby affecting the axial position of the second push rod 154.

[0063] The push rod portion 190 can be slidably and non-rotatably arranged on the guide rail portion 170. By pressing the push rod portion 190, the insertion portion 181 can be pushed away from the first guide rail 171 or the second guide rail 172. After the insertion portion 181 leaves the guide rail, the non-rotating push rod portion 190 presses against the insertion portion transition inclined surface 182, and its lateral component force causes the insertion portion 181 to rotate a certain angle; after releasing the pressing, the insertion portion 181 rebounds under the action of the spring and inserts into the other of the first guide rail 171 or the second guide rail 172, realizing state switching. For example, after the insertion part 181 rotates and switches from the first guide rail 171 to the second guide rail 172 and stabilizes, it is in a pressed locking state, the first entrance part 120 is blocked, and the exit part 110 is connected to the second entrance part 130; then after the push rod part 190 is pressed and released again, the insertion part 181 rotates and switches from the second guide rail 172 to the first guide rail 171, and it is in a pressed pop-up state at this moment, the second entrance part 130 is blocked, and the exit part 110 is connected to the first entrance part 120.

[0064] Understandably, Figure 7 The left guide rail portion 170 should be installed outside the rotating portion 180 and the push rod portion 190 on the right side.

[0065] The working state of the push valve 100 can be adjusted by manually pressing the push rod 190, or the push rod 190 can be driven to move by a power structure such as a motor to achieve automatic adjustment of the working state. The controller of the power structure such as the motor can be connected to the application of the mobile terminal to achieve automatic switching of the teeth flushing and mouthwashing process. For example, it can be set that the outlet 110 is connected to the first inlet 120 for the first 2 minutes, and the teeth are flushed with clean water; after the 2-minute teeth flushing time is over, the motor drives the push rod 190 to move, and the outlet 110 is connected to the second inlet 130, and the mouthwash is switched to mouthwash. Of course, whether the automatic switching function is turned on or not, and the specific switching time can be adjusted according to the needs of the user.

[0066] In one embodiment of the present application, see Figure 5 The first inlet 120 and the second inlet 130 are located at the bottom of the valve body 140. The design that the first inlet 120 and the second inlet 130 are both located at the bottom facilitates the installation of the push valve 100, for example, it can be vertically inserted into the corresponding interface of the water tank, with a simple structure and convenient installation.

[0067] See also Figures 1 to 3 The double water tank water flosser may include a first water tank 210, a second water tank 220, a water pipe 300, a pump assembly 400 and the aforementioned press valve 100. The first inlet 120 is connected to the first water tank 210, the second inlet 130 is connected to the second water tank 220, and the outlet 110 is connected to one end of the water pipe 300.

[0068] See also Figure 3 The pump assembly 400 may include a pressure chamber 410, one end of the pressure chamber 410 (eg Figure 3 The upper right end of the pressure chamber 410 from the perspective of the pressure chamber 410 is connected to the water supply pipe 300, and the liquid in the pressure valve 100 is introduced into the pressure chamber 410. The other end of the pressure chamber (for example Figure 3 The pressure chamber 410 is connected to the spray port 500, and the liquid in the pressure chamber 410 is sprayed out of the water flosser through the spray port 500. A nozzle 510 (see FIG. 5 ) can also be provided outside the spray port 500. Figure 1 , Figure 2 and Figure 8 ).like Figure 3 As shown by the dotted arrow in , the liquid in the first water tank 210 or the second water tank 220 can pass through the water guide pipe 300 and the pressure chamber 410 and then be sprayed out from the spray port 500 .

[0069] Optionally, the first water tank 210 can store water for flushing teeth, and the second water tank 220 can store mouthwash. The volume of the first water tank 210 can be greater than the volume of the second water tank 220. After flushing teeth, the user can use the water flosser to spray out mouthwash for rinsing the mouth without carrying two separate sanitary products, which is highly portable. The present application only uses one water pipe 300 instead of two water pipes (water pipes) as in the background art. The structure is relatively simple and the space allocation is more reasonable. The station switching process of the press valve 100 does not wear the water pipe 300, making the water flosser strong and durable.

[0070] In one embodiment of the present application, see Figure 3 A first one-way valve 411 is provided between the water diversion pipe 300 and the pressure chamber 410, and a second one-way valve 412 is provided between the pressure chamber 410 and the ejection port 500. The second one-way valve 412 may be a duckbill valve.

[0071] In one embodiment of the present application, see Figure 2 The double water tank water flosser may include a battery 610 and a motor 620. The battery 610 is connected to the motor 620, and the output shaft of the motor 620 is connected to the pump assembly 400 to achieve the pumping of the liquid.

[0072] In one embodiment of the present application, see Figure 3 , the pump assembly 400 may include a gear shaft 420, an eccentric sleeve 430 and a transmission rod 440. The eccentric sleeve 430 is fixedly connected to the gear shaft 420, one end of the transmission rod 440 is sleeved on the eccentric sleeve 430, and the other end of the transmission rod is connected to the diaphragm 450, and the diaphragm 450 forms one side of the pressure chamber 410. Its working principle may be: the gear shaft 420 is driven by the motor 620 to drive the eccentric sleeve 430 to rotate, and the transmission rod 440 and the eccentric sleeve 430 form a cam mechanism to drive the transmission rod 440 to reciprocate. When the transmission rod 440 moves upward, the liquid in the pressure chamber 410 is pumped out of the ejection port 500. When the transmission rod 440 moves downward, the liquid in the first water tank 210 or the second water tank 220 is pumped into the pressure chamber 410.

[0073] Further, the pump assembly 400 may include a transmission gear 460, to which the output shaft of the motor 620 is connected, and the transmission gear 460 is meshed with the gear 421 of the gear shaft 420 to drive the gear shaft 420 to rotate. The transmission gear 460 and the gear 421 of the gear shaft 420 may be bevel gears, and their axes intersect.

[0074] In one embodiment of the present application, see Figure 1 , Figure 2 and Figure 8A first liquid replenishing port 211 is disposed on the side of the first water tank 210, and a second liquid replenishing port 221 is disposed on the side of the second water tank 220. The corresponding liquid can be replenished into each water tank through each liquid replenishing port.

[0075] In one embodiment of the present application, see Figure 2 and Figure 8 The first water tank 210 is located at the lower side of the second water tank 220. The first inlet 120 and the first water tank 210 can also be connected through a hose, and one end of the hose can extend into the bottom of the first water tank 210, so that the water flosser can suck the liquid in the first water tank 210.

[0076] The above is a preferred embodiment of the present application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A push valve for a water flosser, characterized in that: include: A valve body (140), the valve body (140) comprising a main portion (141) and a first inlet portion (120), a second inlet portion (130) and an outlet portion (110) extending from the main portion (141), wherein in an axial direction of the main portion (141), the outlet portion (110) is located between the first inlet portion (120) and the second inlet portion (130); A valve core (150), wherein the valve core (150) is movably arranged in the valve body (140), a spring is arranged between the valve core (150) and the valve body (140), and the valve core (150) can change its position in the valve body (140) by being pressed to achieve blocking of the first inlet portion (120) or the second inlet portion (130).

2. The push valve for a water flosser according to claim 1, characterized in that: The inner cavity of the main part (141) comprises a main cavity (1411) and a first cavity (1412) and a second cavity (1413) respectively arranged on both axial sides of the main cavity (1411); the main cavity (1411) is connected to the outlet portion (110); the first cavity (1412) is connected to the first inlet portion (120); the second cavity (1413) is connected to the second inlet portion (130); the diameters of the first cavity (1412) and the second cavity (1413) are both smaller than the diameter of the main cavity (1411); a first axial end surface (1414) is formed between the main cavity (1411) and the first cavity (1412); and a second axial end surface (1415) is formed between the main cavity (1411) and the second cavity (1413); The valve core (150) includes a first sealing portion (151) and a second sealing portion (152), wherein the first sealing portion (151) can be pressed onto the first axial end surface (1414) and block the first cavity (1412), and the second sealing portion (152) can be pressed onto the second axial end surface (1415) and block the second cavity (1413).

3. The push valve for a water flosser according to claim 2, characterized in that: The valve core (150) comprises: A first push rod (153), wherein the first sealing portion (151) radially protrudes from the first push rod (153); A second push rod (154), wherein the second push rod (154) is connected to the first push rod (153), and the second sealing portion (152) radially protrudes from the second push rod (154).

4. The push valve for a water flosser according to claim 3, characterized in that: The first push rod (153) is slidably arranged in the second push rod (154); a first spring (161) is axially arranged between the first push rod (153) and the second push rod (154); a second push rod clamping portion (1541) extending radially inwardly thereof is arranged at the end of one end of the second push rod (154); a first push rod clamping portion (1531) extending radially outwardly thereof is arranged at the end of one end of the first push rod (153); so that when the first push rod (153) and the second push rod (154) move toward each other, the first spring (161) is compressed; after the first push rod (153) and the second push rod (154) move away from each other due to the push force of the first spring (161), the first push rod clamping portion (1531) and the second push rod clamping portion (1541) are in conflict with each other to prevent the first push rod (153) from slipping out of the second push rod (154).

5. The push valve for a water flosser according to claim 4, characterized in that: A second spring (162) is provided between the second push rod (154) and the first axial end surface (1414); the push valve (100) further comprises a guide rail portion (170), a rotating portion (180), and a push rod portion (190); the rotating portion (180) and the push rod portion (190) are inserted into the guide rail portion (170); the push rod portion (190) extends from the guide rail portion (170); the rotating portion (180) presses against the second push rod (154); and the push valve (100) is switched between a press-lock state and a press-pop-up state by pressing the push rod portion (190). In the push-lock state, the first sealing portion (151) blocks the first inlet portion (120), and the outlet portion (110) is connected to the second inlet portion (130); in the push-pop-up state, the second sealing portion (152) blocks the second inlet portion (130), and the outlet portion (110) is connected to the first inlet portion (120).

6. The push valve for a water flosser according to claim 1, characterized in that: The first inlet portion (120) and the second inlet portion (130) are located at the bottom of the valve body (140).

7. A double water tank water flosser, characterized in that: include: The press valve for a dental flosser according to any one of claims 1 to 6; A first water tank (210), the first inlet portion (120) being connected to the first water tank (210); a second water tank (220), the second inlet portion (130) being connected to the second water tank (220); a water diversion pipe (300), one end of the water diversion pipe (300) being connected to the outlet portion (110); A pump assembly (400), the pump assembly (400) being connected to the other end of the water diversion pipe (300) and the spray outlet (500) of the water flosser; A nozzle (510), wherein the nozzle (510) is connected to the ejection outlet (500).

8. The double-tank oral irrigator according to claim 7, characterized in that: The pump assembly (400) comprises a pressure chamber (410), one end of the pressure chamber (410) is connected to the water diversion pipe (300) and introduces the liquid in the pressing valve (100) into the pressure chamber (410), and a first one-way valve (411) is provided between the water diversion pipe (300) and the pressure chamber (410). The other end of the pressure chamber (410) is connected to the spray outlet (500) and allows the liquid in the pressure chamber (410) to be sprayed out of the water flosser through the spray outlet (500); a second one-way valve (412) is provided between the pressure chamber (410) and the spray outlet (500).

9. The double-tank oral irrigator according to claim 8, characterized in that: The pump assembly (400) comprises: Gear shaft (420); An eccentric shaft sleeve (430), wherein the eccentric shaft sleeve (430) is fixedly connected to the gear shaft (420); A transmission rod (440), one end of which is sleeved on the eccentric shaft sleeve (430), and the other end of which is connected to a diaphragm (450), and the diaphragm (450) forms one side of the pressure chamber (410).

10. The double-tank oral irrigator according to claim 7, characterized in that: The first water tank (210) and the second water tank (220) are respectively provided with a liquid replenishing port.

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