Dual tank mouth washer

Abstract

To provide a dual tank mouth washer that, for example, can wash a mouth by using mouthwash after completion of mouth washing, and has relatively high convenience of portability.SOLUTION: A dual tank mouth washer includes a pressing valve, a first tank 210, a second tank 220, a water conduit, and a pump assembly 400. The pressing valve includes an outlet part, a first inlet part, a second inlet part, and a valve core. The valve core is pressed, thereby its position in the pressing valve is changed, and the first inlet part or the second inlet part can be sealed. The first inlet part is connected to the first tank. The second inlet part is connected to the second tank. 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 an ejection port of the mouth washer. The first tank provided by the present application can store injection washing liquid. The second tank can store mouthwash. A user can select liquid by controlling the pressing valve.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present application relates to the field of oral irrigators, and more particularly to dual tank oral irrigators. [Background technology]

[0002] Oral irrigators are auxiliary tools for cleaning the mouth, using the impact of pulsating water to clean teeth and between teeth. The main effect of mouthwash (gargles) is to clean the mouth, mask bad breath caused by bacteria or yeast breaking down food residue, and leave the mouth feeling pleasant and fresh. The two functions complement each other, and users typically use the oral irrigator to clean their teeth and then the mouthwash to rinse their mouth. However, both oral irrigators and mouthwash (generally bottled) take up space, so there is hope for improved portability when traveling.

[0003] The utility model with license publication number CN213130038U discloses a dual-tank oral irrigator, which is designed with two tanks and two pipes to allow different liquids to be charged, meeting the needs of users. However, its structure is complex, the pipes take up a relatively large amount of space, and the switch that controls the liquid flow causes wear on the pipes, so its stability and durability still need to be improved. Summary of the Invention

[0004] SUMMARY OF THE INVENTION To solve or ameliorate at least one of the problems raised in the background art, the present application provides a dual tank oral irrigator.

[0005] The dual tank oral irrigator provided by the present application is a pressure valve including an outlet portion, a first inlet portion, a second inlet portion, and a valve core, wherein the valve core can be pressed to change its position within the pressure valve and seal the first inlet portion or the second inlet portion; a first tank to which the first inlet portion is connected; a second tank to which the second inlet port is connected; a water pipe having one end connected to the outlet portion; and a pump assembly connected to the other end of the water conduit and to the nozzle of the oral irrigator.

[0006] In at least one embodiment, the push valve comprises: a valve body including a main portion and the first inlet portion, the second inlet portion, and the outlet portion extending from the main portion, the outlet portion being located between the first inlet portion and the second inlet portion in an axial direction of the main portion; a valve core movably installed in the valve body.

[0007] In at least one embodiment, the inner chamber body of the main portion includes a main chamber and a first chamber and a second chamber respectively disposed on both sides of the main chamber in the axial direction, the main chamber communicates with the outlet port, the first chamber communicates with the first inlet port, and the second chamber communicates with the second inlet port, the diameters of the first chamber and the second chamber are both smaller than the diameter of the main chamber, a first axial end face is formed between the main chamber and the first chamber, and a second axial end face is formed between the main chamber and the second chamber, The valve core includes a first sealing portion and a second sealing portion, the first sealing portion being capable of pressing and covering the first axial end face and sealing the first chamber, and the second sealing portion being capable of pressing and covering the second axial end face and sealing the second chamber.

[0008] In at least one embodiment, the valve core comprises: a first thrust rod having the first sealing portion protruding in a radial direction; a second thrust rod connected to the first thrust rod, the second sealing portion protruding in the radial direction;

[0009] In at least one embodiment, the first thrust rod is slidably installed within the second thrust rod, a first spring is installed axially between the first thrust rod and the second thrust rod, a second thrust rod locking portion is installed at one end of the second thrust rod and extends radially inward, and a first thrust rod locking portion is installed at one end of the first thrust rod and extends radially outward, so that when the first thrust rod and the second thrust rod move toward each other, the first spring is subjected to pressure, and after the first thrust rod and the second thrust rod move away from each other under the thrust of the first spring, the first thrust rod locking portion and the second thrust rod locking portion abut against each other, preventing the first thrust rod from separating from the second thrust rod.

[0010] In at least one embodiment, a second spring is installed between the second thrust rod and the first axial end surface, and the pressing valve further includes a guide rail portion, a rotating portion, and a thrust rod portion, the rotating portion and the thrust rod portion are inserted into the guide rail portion, the thrust rod portion extends from the guide rail portion, and the rotating portion is pressed against the second thrust rod, and by pushing the thrust rod portion, the pressing valve is switched between a pressing lock state and a pressing ejection state, In the pressed-locked state, the first sealing portion seals the first inlet portion, and the outlet portion communicates with the second inlet portion, and in the pressed-ejected state, the second sealing portion seals the second inlet portion, and the outlet portion communicates with the first inlet portion.

[0011] In at least one embodiment, the first inlet port and the second inlet port are located at the bottom of the valve body.

[0012] In at least one embodiment, the pump assembly includes a pressure chamber, one end of the pressure chamber is connected to the water conduit, and the liquid in the pressing valve is introduced into the pressure chamber, and a first one-way valve is installed between the water conduit and the pressure chamber; The other end of the pressure chamber is connected to the nozzle, and the liquid in the pressure chamber is sprayed from the oral irrigator through the nozzle, and a second one-way valve is installed between the pressure chamber and the nozzle.

[0013] In at least one embodiment, the pump assembly comprises: A gear shaft, an eccentric shaft sleeve fixedly connected to the gear shaft; a transmission rod having one end fitted in the eccentric shaft sleeve and the other end connected to a diaphragm, the diaphragm being formed as one surface of the pressure chamber;

[0014] In at least one embodiment, the first tank and the second tank are each provided with a fluid supply port.

[0015] The first tank provided by the embodiment of the present application can store a spray rinse liquid, and the second tank can store a mouthwash, and the user can select the liquid by controlling the pressing valve, for example, to use the mouthwash to rinse the mouth after completing oral cleaning, which is relatively convenient to carry. Since the present application uses only one water pipe, rather than two pipes (water pipes) as in the background art, the structure is relatively simple and the space allocation is more reasonable. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a front view of a dual tank oral irrigator according to an embodiment of the present application. [Figure 2] FIG. 1 is a cross-sectional view of a dual tank oral irrigator according to an embodiment of the present application. [Figure 3] A structural schematic diagram of a pump assembly in a dual-tank oral irrigator based on an embodiment of the present application. [Figure 4] 1 is an axial view of a pressure valve used in an oral irrigator based on an embodiment of the present application. [Figure 5]A cross-sectional view including a first inlet portion and a second inlet portion of a pressure valve used in an oral irrigator based on an embodiment of the present application. [Figure 6] A cross-sectional view including the outlet portion of a pressure valve used in an oral irrigator based on an embodiment of the present application. [Figure 7] A structural schematic diagram of the guide rail portion, rotating portion, and thrust rod portion of the pressure valve used in the oral irrigator based on an embodiment of the present application. [Figure 8] A cross-sectional view of a dual tank oral irrigator equipped with a pressure valve based on an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0017] In the following, exemplary embodiments of the present application will be described with reference to the accompanying drawings. It should be understood that the specific description is merely intended to teach those skilled in the art how to implement the present application, but does not represent all possible implementations of the present application, nor does it limit the scope of the present application.

[0018] In an embodiment of the present application, a dual tank oral irrigator is provided. The dual tank oral irrigator may include a pressure valve 100, a first tank 210, a second tank 220, a water conduit 300, and a pump assembly 400.

[0019] Referring to Figures 4, 5 and 6, the pressure valve 100 may include an outlet portion 110, a first inlet portion 120, a second inlet portion 130 and a valve core 150, and the valve core 150 can be pressed to change its position within the pressure valve 100, thereby sealing the first inlet portion 120 or the second inlet portion 130.

[0020] Furthermore, the push valve 100 may include a valve body 140. 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, with the outlet portion 110 located between the first inlet portion 120 and the second inlet portion 130 in the axial direction of the main portion 141. A valve core 150 is movably installed within the valve body 140, and the valve core 150 can move to connect the outlet portion 110 to one of the first inlet portion 120 and the second inlet portion 130, thereby controlling the flow direction of the liquid within the valve body 140.

[0021] Furthermore, the present application applies the pressure valve 100 to an oral irrigator, and the liquid switching process is simple, does not wear out the water pipe 300 of the dual-tank oral irrigator (see Figure 3, which will be explained later), the structure is stable, and it is highly durable, so it can be understood that the service life is relatively long.

[0022] 5 and 6, in one embodiment of the present application, the inner chamber body of the main portion 141 may include a main chamber 1411 and a first chamber 1412 and a second chamber 1413 respectively disposed on both axial sides of the main chamber 1411. The main chamber 1411 communicates with the outlet portion 110, the first chamber 1412 communicates with the first inlet portion 120, and the second chamber 1413 communicates with the second inlet portion 130. The diameters of the first chamber 1412 and the second chamber 1413 may be smaller than the diameter of the main chamber 1411, such that a first axial end face 1414 is formed between the main chamber 1411 and the first chamber 1412, and a second axial end face 1415 is formed between the main chamber 1411 and the second chamber 1413.

[0023] The valve core 150 may include a first sealing portion 151 and a second sealing portion 152. The first sealing portion 151 presses against the first axial end face 1414 and seals the first chamber 1412, and the second sealing portion 152 presses against the second axial end face 1415 and seals the second chamber 1413. The valve core moves to seal the corresponding first chamber 1412 or second chamber 1413, thereby controlling the flow direction of the liquid within the valve body 140.

[0024] 5 , in one embodiment of the present application, the valve core 150 includes a first thrust rod 153 and a second thrust rod 154. A first sealing portion 151 protrudes radially from the first thrust rod 153, a second thrust rod 154 is connected to the first thrust rod 153, and a second sealing portion 152 protrudes radially from the second thrust rod 154. For example, the first sealing portion 151 may be a cylindrical structure installed at the end of the first thrust rod 153, and the second sealing portion 152 may be a flange structure installed at the end of the second thrust rod 154.

[0025] In one embodiment of the present application, referring to FIG. 5, the first thrust rod 153 is slidably installed within the second thrust rod 154, for example, an axial chamber is installed in the second thrust rod 154, and the first thrust rod 153 slides into the axial chamber of the second thrust rod 154 from one end (for example, the right end in FIG. 5).

[0026] A first spring 161 can be installed between the first thrust rod 153 and the second thrust rod 154 in the axial direction, a second thrust rod locking portion 1541 extending radially inward is installed at the opening of one end (e.g., the left end in FIG. 5) of the second thrust rod 154, and a first thrust rod locking portion 1531 extending radially outward is installed at the end of one end (e.g., the right end in FIG. 5) of the first thrust rod 153, so that when the first thrust rod 153 and the second thrust rod 154 move toward each other, the first spring 161 is subjected to pressure, and the first thrust rod 153 and the second thrust rod 154 move away from each other under the thrust of the first spring 161, and then the first thrust rod locking portion 1531 and the second thrust rod locking portion 1541 come into contact with each other, preventing the first thrust rod 153 from separating from the second thrust rod 154.

[0027] 5, in one embodiment of the present application, a second spring 162 is installed between the second thrust rod 154 and the first axial end surface 1414. For example, the second spring 162 can abut against the first axial end surface 1414 and the second sealing portion 152.

[0028] The present application includes a push-to-release switching mechanism connected to the valve core 150, which can manually control the operating position within the press valve. For example, the push-to-release switching mechanism has a push-to-release structure similar to that of a push-type ballpoint pen, and can realize two states: push-to-lock and push-to-release, which respectively correspond to two states: sealing the first inlet port 120 and sealing the second inlet port 130 of the press valve 100. In the present application, the push-to-release switching mechanism is applied to the valve structure of an oral irrigator, which allows the flow state of the liquid within the valve to be easily switched manually and is simple to operate.

[0029] Further, referring to FIG. 7, the push-and-fire switching mechanism may include a guide rail portion 170, a rotating portion 180, and a thrust rod portion 190.

[0030] The guide rail portion 170 is fixedly attached to the valve body 140, and has a plurality of first guide rails 171 and a plurality of second guide rails 172 arranged alternately around the axis on the inner wall surface of the guide rail portion 170, the first guide rail 171 being longer than the second guide rail 172, and a guide rail transition slope 173 being arranged between the first guide rail 171 and the second guide rail 172. The extending directions of the first guide rail 171 and the second guide rail 172 can both be parallel to the axis.

[0031] The rotating part 180 is installed inside the guide rail part 170, and a plurality of insertion parts 181 are installed on the outer wall surface of the rotating part 180 around an axis. As the rotating part 180 rotates, the plurality of insertion parts 181 can switch between being inserted into the plurality of first guide rails 171 and the plurality of second guide rails 172. An insertion part transition slope 182 can be formed at one end of the insertion part 181, and the other end of the rotating part 180 can abut against the second thrust rod 154. The insertion depth of the insertion part 181 can be changed depending on the depth of the first guide rail 171 and the second guide rail 172, which affects the axial position of the second thrust rod 154.

[0032] The thrust rod portion 190 is slidably and non-rotatably installed on the guide rail portion 170. By pressing the thrust 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 thrust rod portion 190 abuts against the insertion portion transition slope 182, and the lateral component of this rotation causes the insertion portion 181 to rotate by a certain angle. After the pressure is released, the insertion portion 181 rebounds under the action of the spring and is inserted into either the first guide rail 171 or the second guide rail 172, thereby switching the state. For example, after the insertion portion 181 rotates from the first guide rail 171 and switches to the second guide rail and becomes stable, it is in a pressed and locked state, the first entrance portion 120 is sealed, and the exit portion 110 and the second entrance portion 130 are connected. After it is pressed again to loosen the thrust rod portion 190, the insertion portion 181 rotates from the second guide rail 172 and switches to the first guide rail 171, and at this time it is in a pressed and ejected state, the second entrance portion 130 is sealed, and the exit portion 110 and the first entrance portion 120 are connected.

[0033] It can be understood that the left guide rail portion 170 in FIG. 7 should be attached to the outside of the right rotating portion 180 and thrust rod 190.

[0034] The operating state of the pressure valve 100 can be adjusted by manually pressing the thrust rod portion 190, or the movement of the thrust rod portion 190 can be controlled by a power structure such as a motor, thereby achieving automatic adjustment of the operating state. The controller of the power structure such as a motor can be linked to an application program on a mobile terminal to achieve automatic switching between the oral cleaning and mouth rinsing processes. For example, for the first two minutes, the outlet portion 110 is connected to the first inlet portion 120 to perform oral cleaning with clean water, and after the two-minute oral cleaning period is over, the thrust rod portion 190 is moved by the motor to connect the outlet portion 110 to the second inlet portion 130, thereby switching to oral cleaning with mouth rinse. Of course, the specific switching time for turning on / off the automatic switching function can be adjusted according to the user's needs.

[0035] 5, in one embodiment of the present application, the first inlet port 120 and the second inlet port 130 are located at the bottom of the valve body 140. The design in which the first inlet port 120 and the second inlet port 130 are both located at the bottom facilitates the installation of the pressure valve 100, for example, by simply inserting the valve 100 vertically into the corresponding connection port of the tank, resulting in a simple structure and easy installation.

[0036] 1 to 3, the dual tank oral irrigator may include a first tank 210, a second tank 220, a water conduit 300, a pump assembly 400, and the aforementioned pressure valve 100. The first inlet 120 is connected to the first tank 210, the second inlet 130 is connected to the second tank 220, and the outlet 110 is connected to one end of the water conduit 300.

[0037] 3, the pump assembly 400 may include a pressure chamber 410, one end of which (e.g., an end at the top right of the pressure chamber 410 in the view of FIG. 3) is connected to the water conduit 300, and the liquid in the pressing valve 100 is introduced into the pressure chamber 410. The other end of which (e.g., an end at the top left of the pressure chamber 410 in the view of FIG. 3) is connected to the jet 500, and the liquid in the pressure chamber 410 is ejected from the oral irrigator through the jet 500. A nozzle 510 may be further provided outside the jet 500 (see FIGS. 1, 2, and 8). As shown by the dotted arrow in FIG. 3, the liquid in the first tank 210 or the second tank 220 can be ejected from the jet 500 after passing through the water conduit 300 and the pressure chamber 410.

[0038] Optionally, the first tank 210 can store a spray rinse, and the second tank 220 can store a mouthwash, with the volume of the first tank 210 being larger than that of the second tank 220. After completing oral cleaning, the user can rinse their mouth with the mouthwash sprayed from the oral irrigator, eliminating the need to carry two separate hygiene products, making it more convenient to carry. Because the present application uses only one water conduit 300, rather than two pipes (water conduits) as in the background art, the structure is relatively simple and the space allocation is more reasonable. Since the water conduit 300 is not worn out during the process of switching the operating position of the pressure valve 100, the oral irrigator is more robust and durable.

[0039] 3, in one embodiment of the present application, a first one-way valve 411 is installed between the water conduit 300 and the pressure chamber 410, and a second one-way valve 412 is installed between the pressure chamber 410 and the spout 500. The second one-way valve 412 can be a duckbill valve.

[0040] 2, in one embodiment of the present application, the dual tank oral irrigator can 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 pumping of the liquid.

[0041] 3 , in one embodiment of the present application, the pump assembly 400 may include a gear shaft 420, an eccentric shaft sleeve 430, and a transmission rod 440. The eccentric shaft sleeve 430 is fixedly connected to the gear shaft 420, one end of the transmission rod 440 is fitted into the eccentric shaft sleeve 430, and the other end of the transmission rod is connected to a diaphragm 450, which forms one surface of the pressure chamber 410. The operation principle may be as follows: after the gear shaft 420 is driven by the motor 620, the eccentric shaft sleeve 430 rotates accordingly, and the transmission rod 440 and the eccentric shaft sleeve 430 form a cam mechanism, which causes the transmission rod 440 to reciprocate. When the transmission rod 440 moves upward, the liquid in the pressure chamber 410 is ejected from the ejection port 500. When the transmission rod 440 moves downward, the liquid in the first tank 210 or the second tank 220 is pumped into the pressure chamber 410 .

[0042] Furthermore, the pump assembly 400 may include a transmission gear 460, and an output shaft of the motor 620 is connected to the transmission gear 460, and the transmission gear 460 meshes with a gear 421 of the gear shaft 420 to drive the rotation of the gear shaft 420. The transmission gear 460 and the gear 421 of the gear shaft 420 may be tapered gears, and their axes intersect with each other.

[0043] In one embodiment of the present application, referring to Figures 1, 2 and 8, a first liquid replenishment port 211 is provided on the side of the first tank 210, and a second liquid replenishment port 221 is provided on the side of the second tank 220, and the liquid corresponding to each tank can be replenished through each liquid replenishment port.

[0044] 2 and 8, in one embodiment of the present application, the first tank 210 is located below the second tank 220. The first inlet 120 and the first tank 210 can be connected via a hose, one end of which extends into the bottom of the first tank 210, so that the oral irrigator can easily suck up the liquid in the first tank 210.

[0045] The above description is a preferred embodiment of the present application, but a person skilled in the art may make some improvements and modifications without departing from the principles of the present application, and these improvements and modifications should also be considered to be within the scope of protection of the present application. [Explanation of symbols]

[0046] 100 Pressure valve 110 Exit section 120 1st entrance section 130 2nd entrance section 140 Valve body 141 Main Section 1411 Main Chamber 1412 Chamber 1 1413 Second Chamber 1414 1st axial end face 1415 2nd axis end face 150 valve core 151 1st sealed part 152 2nd sealed part 153 First thrust rod 1531 First thrust rod locking part 154 Second thrust rod 1541 Second thrust rod locking part 161 First Spring 170 Guide rail section 171 First guide rail 172 Second guide rail 173 Guide rail transition slope 180 Rotating part 181 Insertion part 182 Insertion section transition slope 190 Thrust rod part 210 First Tank 211 1st fluid replenishment port 220 Second Tank 221 2nd fluid replenishment port 300 Water Pipe 400 Pump Assembly 410 Pressure Chamber 411 First one-way valve 412 Second one-way valve 420 Gear shaft 421 Gears 430 Eccentric shaft sleeve 440 Transmission Rod 450 Diaphragm 460 Transmission Gear 500 spouts 510 nozzle 610 battery 620 motor.

Claims

1. A pressure valve (100) comprising an outlet portion (110), a first inlet portion (120), a second inlet portion (130) and a valve core (150), wherein the valve core (150) can be changed in position within the pressure valve (100) by being pressed to seal the first inlet portion (120) or the second inlet portion (130); a first tank (210) to which the first inlet (120) is connected; a second tank (220) to which the second inlet (130) is connected; a water pipe (300) whose one end is connected to the outlet portion (110); and a pump assembly (400) connected to the other end of the water guide pipe (300) and to a spout (500) of the oral irrigator.

2. The pressure valve (100) a valve body (140) including a main portion (141) and the first inlet portion (120), the second inlet portion (130), and the outlet portion (110) extending from the main portion (141), with the outlet portion (110) located between the first inlet portion (120) and the second inlet portion (130) in the axial direction of the main portion (141); The dual tank oral irrigator of claim 1, further comprising a valve core (150) movably installed within the valve body (140).

3. The inner chamber body of the main portion (141) includes a main chamber (1411) and a first chamber (1412) and a second chamber (1413) respectively installed on both sides of the main chamber (1411) in the axial direction, the main chamber (1411) communicating with the outlet portion (110), the first chamber (1412) communicating with the first inlet portion (120), the second chamber (1413) communicating with the second inlet portion (130), the diameters of the first chamber (1412) and the second chamber (1413) being smaller than the diameter of the main chamber (1411), a first axial end surface (1414) being formed between the main chamber (1411) and the first chamber (1412), and a second axial end surface (1415) being formed between the main chamber (1411) and the second chamber (1413), The dual-tank oral irrigator of claim 2, characterized in that the valve core (150) includes a first sealing portion (151) and a second sealing portion (152), the first sealing portion (151) being capable of pressing and covering the first axial end surface (1414) and sealing the first chamber (1412), and the second sealing portion (152) being capable of pressing and covering the second axial end surface (1415) and sealing the second chamber (1413).

4. The valve core (150) a first thrust rod (153) from which the first sealing portion (151) protrudes in the radial direction; The dual tank oral irrigator described in claim 3, characterized in that it includes a second thrust rod (154) connected to the first thrust rod (153) and having the second sealing portion (152) protruding radially.

5. The first thrust rod (153) is slidably installed within the second thrust rod (154), a first spring (161) is installed between the first thrust rod (153) and the second thrust rod (154) in the axial direction, a second thrust rod locking portion (1541) is installed at one end of the second thrust rod (154) and extends radially inward, and a first thrust rod locking portion (1531) is installed at one end of the first thrust rod (153) and extends radially outward, The dual tank oral irrigator of claim 4, characterized in that when the first thrust rod (153) and the second thrust rod (154) move toward each other, the first spring (161) is pressurized, and after the first thrust rod (153) and the second thrust rod (154) move away from each other under the thrust of the first spring (161), the first thrust rod engaging portion (1531) and the second thrust rod engaging portion (1541) abut against each other, preventing the first thrust rod (153) from separating from the second thrust rod (154).

6. a second spring (162) is installed between the second thrust rod (154) and the first axial end surface (1414); the pressing valve (100) further includes a guide rail portion (170), a rotating portion (180), and a thrust rod portion (190); the rotating portion (180) and the thrust rod portion (190) are inserted into the guide rail portion (170), the thrust rod portion (190) extends from the guide rail portion (170), and the rotating portion (180) is pressed against the second thrust rod (154), so that the pressing valve (100) is switched between a pressed lock state and a pressed ejection state by pushing the thrust rod portion (190); The dual tank oral irrigator of claim 5, characterized in that in the pressed lock state, the first sealing portion (151) seals the first inlet portion (120) and the outlet portion (110) is connected to the second inlet portion (130), and in the pressed ejection state, the second sealing portion (152) seals the second inlet portion (130) and the outlet portion (110) is connected to the first inlet portion (120).

7. The dual tank oral irrigator according to claim 2, wherein the first inlet portion (120) and the second inlet portion (130) are located at the bottom of the valve body (140).

8. The pump assembly (400) includes a pressure chamber (410), one end of which is connected to the water conduit (300), and the liquid in the pressure valve (100) is introduced into the pressure chamber (410), and a first one-way valve (411) is installed between the water conduit (300) and the pressure chamber (410); The dual-tank oral irrigator described in claim 1, characterized in that the nozzle (500) is connected to the other end of the pressure chamber (410), the liquid in the pressure chamber (410) is sprayed from the oral irrigator through the nozzle (500), and a second one-way valve (412) is installed between the pressure chamber (410) and the nozzle (500).

9. The pump assembly (400) comprises: A gear shaft (420); an eccentric shaft sleeve (430) fixedly connected to the gear shaft (420); The dual tank oral irrigator of claim 8, further comprising: a transmission rod (440) having one end fitted into the eccentric shaft sleeve (430) and the other end connected to a diaphragm (450), the diaphragm (450) being formed as one surface of the pressure chamber (410).

10. The dual tank oral irrigator according to claim 1, wherein the first tank (210) and the second tank (220) are each provided with a liquid supply port.

Images