Pressure valve for oral irrigator and dual tank oral irrigator

Abstract

To provide a pressure valve for an oral cavity irrigator and a dual tank oral cavity irrigator, which have a stable structure, durability, and long service life. [Solution] The pressing valve 100 for oral irrigator includes a valve body 140 and a valve core. The valve body includes a main part and a first inlet part 120, a second inlet part 130 and an outlet part 110 extending from the main part. In the axial direction of the main part, the outlet part is located between the first inlet part and the second inlet part. The valve core is movably installed in the valve body, and a spring is installed between the valve core and the valve body, and the valve core can be pressed to change its position in the valve body to seal the first inlet part or the second inlet part. The dual tank oral irrigator includes the pressing valve for oral irrigator described above, a first tank, a second tank, a water guide, a pump assembly and a nozzle. The first inlet part is connected to the first tank, the second inlet part is connected to the second tank, and one end of the water guide is connected to the outlet part.

Description

[Technical field]

[0001] The present invention relates to the technical field of oral irrigators, and in particular to a pressure valve for an oral irrigator and a dual tank oral irrigator. [Background technology]

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

[0003] The utility model with the authorization publication number CN213130038U discloses a dual tank oral irrigator, which is designed with two tanks and two pipes in the oral irrigator to realize the charging of different liquids and meet the needs of users, but its structure is complicated, the space occupied by the pipes is relatively large, and the switch for controlling the outflow of liquid causes wear on the pipes, so its stability and durability still need to be improved. Summary of the Invention

[0004] SUMMARY OF THE DISCLOSURE In order to solve or ameliorate at least one of the problems raised in the background art, the present invention provides a push valve for an oral irrigator and a dual tank oral irrigator.

[0005] The pressure valve for the oral irrigator provided by this invention is: a valve body including a main portion and a first inlet portion, a second inlet portion and an 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 that is movably installed within the valve body, a spring is installed between the valve core and the valve body, and the valve core can be pressed to change its position within the valve body to seal the first inlet port or the second inlet port.

[0006] 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 an 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 surface is formed between the main chamber and the first chamber, and a second axial end surface 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 pressingly covering the first axial end face and sealing the first chamber, and the second sealing portion being capable of pressingly covering the second axial end face and sealing the second chamber.

[0007] 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 a radial direction.

[0008] 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 extending radially inward, and a first thrust rod locking portion is installed at one end of the first thrust rod extending radially outward, so that when the first thrust rod and the second thrust rod move toward each other, the first spring is pressured, 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, thereby preventing the first thrust rod from coming off the second thrust rod.

[0009] 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 the thrust rod portion is pushed to switch the pressing valve between a pressing lock state and a pressing spring 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.

[0010] In at least one embodiment, the first inlet port and the second inlet port are located at a bottom portion of the valve body.

[0011] The dual tank oral irrigator provided by this invention is A pressure valve for the oral irrigator as described above; 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; a pump assembly including a pressure chamber, the pressure chamber being connected to the other end of the water conduit and to a spout of the oral irrigator; and a nozzle connected to the outlet location.

[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 disposed 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 ejected from the oral irrigator through the nozzle, and a second one-way valve is installed between the pressure chamber and the nozzle.

[0013] A first one-way valve is disposed between the water guide and the pressure chamber, and a second one-way valve is disposed between the pressure chamber and the nozzle.

[0014] 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, one end of which is fitted into the eccentric shaft sleeve and the other end of which is connected to a diaphragm, the diaphragm being formed as one surface of the pressure chamber;

[0015] In at least one embodiment, the first tank and the second tank are each provided with a fluid replacement port.

[0016] The pressure valve provided by the embodiment of the present invention can stably realize the selection of liquid flow within the valve, and does not wear out the water pipe in the oral irrigator. The structure is stable and durable, and the service life is relatively long.

[0017] The first tank provided by the embodiment of the present application can store a spray cleaning liquid, and the second tank can store a mouthwash, and the user can select the liquid by controlling the pressing valve, for example, use the mouthwash to rinse the mouth after completing oral cleaning, and it is relatively convenient to carry. Since the present application uses only one water pipe, and does not use two pipes (water pipes) as in the background art, the structure is relatively simple and the space allocation is more reasonable. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a front view of a dual tank oral irrigator according to an embodiment of the present application. [Diagram 2] A cross-sectional view of a dual tank oral irrigator according to an embodiment of the present application. [Diagram 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. [Diagram 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 a pressure valve used in an 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 PREFERRED EMBODIMENTS

[0019] 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 a person skilled in the art how to implement the present application, and does not present all possible implementations of the present application, nor does it limit the scope of the present application.

[0020] An embodiment of the present invention provides a pressure valve for an oral irrigator (hereinafter sometimes abbreviated as "pressure valve") and a dual tank oral irrigator.

[0021] 4, 5 and 6, the push valve 100 can 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, and 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 installed in the valve body 140, and a spring is installed between the valve core 150 and the valve body 140. The valve core 150 can be pressed to change its position in the valve body 140 to seal the first inlet portion 120 or the second inlet portion 130, and the flow direction of the liquid in the valve body 140 can be controlled.

[0022] In addition, the present application applies the pressure valve 100 to an oral irrigator, and the liquid switching process is simple, there is no wear on the water pipe 300 of the dual-tank oral irrigator (see Figure 3, which will be explained later), the structure is stable and durable, and it can be understood that the service life is relatively long.

[0023] 5 and 6, in one embodiment of the present application, the inner chamber body of the main part 141 may include a main chamber 1411 and a first chamber 1412 and a second chamber 1413 respectively disposed on both sides of the main chamber 1411 in the axial direction. The main chamber 1411 communicates with the outlet part 110, the first chamber 1412 communicates with the first inlet part 120, and the second chamber 1413 communicates with the second inlet part 130. The diameters of the first chamber 1412 and the second chamber 1413 may be smaller than the diameter of the main chamber 1411, and a first axial end surface 1414 is formed between the main chamber 1411 and the first chamber 1412, and a second axial end surface 1415 is formed between the main chamber 1411 and the second chamber 1413.

[0024] The valve core 150 may include a first sealing part 151 and a second sealing part 152. The first sealing part 151 can press-cover the first axial end face 1414 and seal the first chamber 1412, and the second sealing part 152 can press-cover the second axial end face 1415 and seal the second chamber 1413. The valve core moves to realize the sealing of the corresponding first chamber 1412 or second chamber 1413, thereby controlling the flow direction of the liquid in the valve body 140.

[0025] 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. Exemplarily, the first sealing portion 151 may be a cylindrical structure installed at an end of the first thrust rod 153, and the second sealing portion 152 may be a flange structure installed at an end of the second thrust rod 154.

[0026] In one embodiment of the present application, referring to FIG. 5, a first thrust rod 153 is slidably mounted within a second thrust rod 154, e.g., an axial chamber is mounted in the second thrust rod 154, and the first thrust rod 153 slidably extends into the axial chamber of the second thrust rod 154 from one end thereof (e.g., the right end in FIG. 5).

[0027] 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 an end of one end (e.g., the right end in FIG. 5) of the first thrust rod 153. When the first thrust rod 153 and the second thrust rod 154 move relative to each other, the first spring 161 receives 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, thereby preventing the first thrust rod 153 from coming off the second thrust rod 154.

[0028] 5, in one embodiment of the present application, a second spring 162 is disposed 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.

[0029] The present application includes a push-up spring switching mechanism connected to the valve core 150, which can realize manual control of the operating position in the push-up valve. For example, the push-up spring switching mechanism has a push-up spring structure similar to that of a push-type ballpoint pen, and can realize two states of push-up lock and push-up spring, which can respectively correspond to two states of sealing the first inlet 120 and sealing the second inlet 130 of the push-up valve 100. In the present application, the push-up spring switching mechanism is applied to the valve structure of the oral irrigator, and the flow state of the liquid in the valve can be easily switched manually, and the operation is simple.

[0030] Further, referring to FIG. 7 , the push-and-release switching mechanism may include a guide rail portion 170 , a rotating portion 180 , and a thrust rod portion 190 .

[0031] The guide rail portion 170 is fixedly attached to the valve body 140, and a plurality of first guide rails 171 and a plurality of second guide rails 172 are installed on the inner wall surface of the guide rail portion 170, which are installed alternately around the axis, the first guide rail 171 being longer than the second guide rail 172, and a guide rail transition slope 173 being installed 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.

[0032] The rotating part 180 is installed inside the guide rail part 170, and a plurality of insertion parts 181 are installed around an axis on the outer wall surface of the rotating part 180. As the rotating part 180 rotates, the plurality of insertion parts 181 can be switched between being inserted into the plurality of first guide rails 171 and being inserted into the plurality of second guide rails 172. An insertion part transition slope 182 can be provided 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 axial position of the second thrust rod 154 is affected by changing the insertion depth of the insertion part 181 depending on the depth of the first guide rail 171 and the second guide rail 172.

[0033] 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, and 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 abuts the insertion portion 181 by a certain angle, and after the pressing force 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 realizing the switching of 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-locked state, the first inlet portion 120 is sealed, and the outlet portion 110 and the second inlet 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, at which point it is in a pressed-out state, the second inlet portion 130 is sealed, and the outlet portion 110 and the first inlet portion 120 are connected.

[0034] 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.

[0035] The thrust rod portion 190 can be manually pressed to adjust the operating state of the push valve 100, and the movement of the thrust rod portion 190 can be driven by a power structure such as a motor to realize automatic adjustment of the operating state. The controller of the power structure such as a motor can be linked to an application program of a mobile terminal to realize automatic switching between oral cleaning and mouth rinsing. For example, the outlet portion 110 communicates with the first inlet portion 120 for the first two minutes to perform oral cleaning with clean water, and after the two minutes of oral cleaning time is over, the thrust rod portion 190 moves in response to the motor to cause the outlet portion 110 to communicate with the second inlet portion 130 to switch to oral cleaning with mouth rinse. Of course, the specific switching time for turning on and off the automatic switching function can be adjusted according to the needs of the user.

[0036] 5, in one embodiment of the present application, the first inlet portion 120 and the second inlet portion 130 are located at the bottom of the valve body 140. The design in which the first inlet portion 120 and the second inlet portion 130 are both located at the bottom facilitates the installation of the push valve 100, for example, by simply inserting the push valve 100 vertically into the corresponding connection port of the tank, thus simplifying the structure and making the installation easy.

[0037] 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 above-mentioned push 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.

[0038] 3, the pump assembly 400 may include a pressure chamber 410, one end of the pressure chamber 410 (for example, an end at the top right of the pressure chamber 410 in the view of FIG. 3) is connected to the water guide 300, and the liquid in the pressing valve 100 is introduced into the pressure chamber 410. The other end of the pressure chamber 410 (for example, an end at the top left of the pressure chamber 410 in the view of FIG. 3) is connected to the nozzle 500, and the liquid in the pressure chamber 410 is ejected from the oral irrigator through the nozzle 500. A nozzle 510 may be further provided outside the nozzle 500 (see FIG. 1, FIG. 2, and FIG. 8). As shown by the dotted arrow in FIG. 3, the liquid in the first tank 210 or the second tank 220 may be ejected from the nozzle 500 after passing through the water guide 300 and the pressure chamber 410.

[0039] Optionally, the first tank 210 can store a spray rinse liquid, and the second tank 220 can store a mouthwash, and the volume of the first tank 210 can be larger than that of the second tank 220. After the user has finished washing his / her mouth, he / she can rinse his / her mouth with the mouthwash sprayed from the oral irrigator, and there is no need to carry two separate hygiene products, so that the portability is relatively high. Since only one water pipe 300 is used in the present application, and not two pipes (water pipes) as in the background art, the structure is relatively simple and the space allocation is more reasonable. Since the water pipe 300 is not worn out during the process of switching the operating position of the push valve 100, the oral irrigator is more robust and durable.

[0040] 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.

[0041] In one embodiment of the present application, referring to Fig. 2, 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 realize the pumping of the liquid.

[0042] In one embodiment of the present application, referring to Fig. 3, 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 working 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. As 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 .

[0043] 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.

[0044] In one embodiment of the present application, referring to Figures 1, 2 and 8, a first liquid replacement port 211 is provided on the side of the first tank 210, and a second liquid replacement 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 replacement port.

[0045] 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 communicated with each other 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.

[0046] 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. These improvements and modifications are also considered to be within the scope of protection of the present application. [Explanation of symbols]

[0047] 100 Pressure valve 110 Exit section 120 1st entrance section 130 2nd entrance section 140 Valve body 141 Main Section 1411 Main Chamber 1412 First Chamber 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 section 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 valve body (140) including 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), the outlet portion (110) being located between the first inlet portion (120) and the second inlet portion (130) in an axial direction of the main portion (141); a valve core (150) that is movably installed within the valve body (140), a spring is installed between the valve core (150) and the valve body (140), and the valve core (150) can be pressed to change its position within the valve body (140) to seal the first inlet portion (120) or the second inlet portion (130).

2. 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) 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) are all smaller than the diameter of the main chamber (1411), a first axial end surface (1414) is formed between the main chamber (1411) and the first chamber (1412), and a second axial end surface (1415) is formed between the main chamber (1411) and the second chamber (1413), The push valve for oral irrigator described in claim 1, characterized in that the valve core (150) includes a first sealing portion (151) and a second sealing portion (152), the first sealing portion (151) can press-cover the first axial end face (1414) and seal the first chamber (1412), and the second sealing portion (152) can press-cover the second axial end face (1415) and seal the second chamber (1413).

3. The valve core (150) is a first thrust rod (153) having the first sealing portion (151) protruding in a radial direction; The pressure valve for an oral irrigator as described in claim 2, 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.

4. The first thrust rod (153) is slidably installed within the second thrust rod (154), a first spring (161) is installed between the axial direction of the first thrust rod (153) and the second thrust rod (154), 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. A pressure valve for an oral irrigator as described in claim 3, characterized in 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 after the first thrust rod (153) and the second thrust rod (154) move away from each other due to 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, thereby preventing the first thrust rod (153) from coming off the second thrust rod (154).

5. 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); by pushing the thrust rod portion (190), the pressing valve (100) is switched between a pressed lock state and a pressed spring-out state; A pressure valve for an oral irrigator as described in claim 4, 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).

6. The pressure valve for an oral irrigator 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 pressure valve for an oral irrigator according to any one of claims 1 to 6, a first tank (210) to which the first inlet portion (120) is connected; a second tank (220) to which the second inlet portion (130) is connected; A water pipe (300) having one end connected to the outlet portion (110); a pump assembly (400) connected to the other end of the water guide pipe (300) and to a nozzle (500) of the oral irrigator; A dual tank oral irrigator comprising: a nozzle (510) connected to the nozzle (500).

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 push 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 of claim 7, 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 ejected 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 7, wherein the first tank (210) and the second tank (220) are each provided with a liquid refill port.

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