Rotary valve for oral irrigator and dual tank oral irrigator

Abstract

To provide a rotary valve for an oral irrigator and a dual tank oral irrigator, which have a simple structure, stability and durability. [Solution] A rotary valve 100 for an oral irrigator includes a valve body and a valve core. 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. The first inlet portion and the second inlet portion are located on the circumferential surface of the main portion, and the first inlet portion and the second inlet portion are located at the same circumferential position of the main portion and are arranged in parallel in the axial direction. The valve core includes a first sealing portion and a second sealing portion arranged on its circumferential surface. The first sealing portion is used to seal the first inlet portion, and the second sealing portion is used to seal the second inlet portion, and the first sealing portion and the second sealing portion are both arranged in a staggered manner in the circumferential direction and the axial direction of the circumferential surface of the valve core, so that the valve core selectively and thoroughly seals one of the first inlet portion and the second inlet portion.

Description

[Technical field]

[0001] The present application relates to the field of oral irrigator technology, and more particularly to a rotary valve for an oral irrigator and a dual tank oral irrigator. [Background technology]

[0002] Mouthwash is an auxiliary tool for cleaning the mouth, and cleans teeth and spaces between teeth by using the impact of a pulsating water flow. The main effect of mouthwash is to cleanse the mouth, mask bad breath caused by bacteria or yeast breaking down food residue, and leave the mouth feeling comfortable and fresh. The functions of both are complementary, and users usually use mouthwash to clean their teeth after using mouthwash. However, both mouthwashes and mouthwashes (which are generally bottled) take up space, so there is a demand 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 To solve or ameliorate at least one of the problems raised in the background art, the present invention provides a rotary valve for an oral irrigator and a dual tank oral irrigator.

[0005] The rotary 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 first inlet portion and the second inlet portion being located on a circumferential surface of the main portion, the first inlet portion and the second inlet portion being located at the same position in the circumferential direction of the main portion, and being arranged in parallel in the axial direction; a valve core including a first sealing portion and a second sealing portion installed on a peripheral surface thereof, the first sealing portion being used to seal the first inlet portion and the second sealing portion being used to seal the second inlet portion, the first sealing portion and the second sealing portion being staggered both in the circumferential direction and the axial direction of the peripheral surface of the valve core, so that the valve core selectively and thoroughly seals one of the first inlet portion and the second inlet portion.

[0006] In at least one embodiment, the first sealing portion and the second sealing portion have a mutual difference of 60° to 120° in the circumferential direction of the peripheral surface of the valve core, and the valve core simultaneously seals a partial area of ​​a connection port between the first inlet portion and the main portion and a partial area of ​​a connection port between the second inlet portion and the main portion, allowing liquid in the first inlet portion and liquid in the second inlet portion to enter the valve body simultaneously.

[0007] In at least one embodiment, the first inlet port and the second inlet port are located at a bottom portion of the valve body.

[0008] In at least one embodiment, the first seal and the second seal are silicone.

[0009] In at least one embodiment, the valve core has axial shoulders at both axial ends thereof, the axial shoulders abutting against an inner wall surface of the main portion to make the axes of the valve core and the main portion overlap.

[0010] In at least one embodiment, a hand wheel is connected to an end of the valve core.

[0011] The dual tank oral irrigator provided by this invention is A rotary 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 connected to the other end of the water guide pipe and to a nozzle 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 conduit, and the liquid in the rotary valve is introduced into the pressure chamber, and a first one-way valve is disposed between the 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] 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;

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

[0015] The rotary 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.

[0016] The first tank provided by the embodiment of the present application can store the jet cleaning water, and the second tank can store the mouthwash, and the user can select the liquid by controlling the rotary valve, for example, the mouthwash can be used to rinse the mouth after the mouthwash is completed, and the portability is relatively high. 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]

[0017] [Figure 1] FIG. 2 is a front view of a dual tank oral irrigator according to an embodiment of the present application. [Diagram 2] FIG. 2 is a side view of a dual tank oral irrigator according to an embodiment of the present application. [Diagram 3] A cross-sectional view of a dual tank oral irrigator according to an embodiment of the present application. [Figure 4] A structural schematic diagram of the first tank and the second tank in a dual tank oral irrigator based on an embodiment of the present application. [Diagram 5] A structural schematic diagram of a pump assembly in a dual tank oral irrigator based on an embodiment of the present application. [Figure 6] FIG. 4 is an enlarged view of a portion of the dual tank oral irrigator in FIG. 3. [Figure 7] A structural schematic diagram of a rotary valve used in an oral irrigator based on an embodiment of the present application. [Figure 8] A cross-sectional view of a rotary valve for use in an oral irrigator based on an embodiment of the present application. [Figure 9] A structural schematic diagram of a valve core used in a rotary valve of an oral irrigator based on an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] 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.

[0019] An embodiment of the present invention provides a rotary valve for an oral irrigator (hereinafter sometimes abbreviated as "rotary valve") and a dual tank oral irrigator.

[0020] 7, 8 and 9, the rotary valve 100 may include a valve body 140 and a valve core 150. The valve body 140 may include 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 first inlet portion 120 and the second inlet portion 130 are located on the circumferential surface of the main portion 141, and the first inlet portion 120 and the second inlet portion 130 are located at the same position in the circumferential direction of the main portion 141 and are installed in parallel in the axial direction.

[0021] The valve core 150 includes a first sealing portion 151 and a second sealing portion 152 on its peripheral surface. The valve core 150 is pivotally installed in the main part 141, the first sealing portion 151 can seal the first inlet portion 120, and the second sealing portion 152 can seal the second inlet portion 130. The first sealing portion 151 and the second sealing portion 152 are both staggered in the circumferential and axial directions on the peripheral surface of the valve core 150, so that only one of the first inlet portion 120 and the second inlet portion 130 can be thoroughly sealed by the valve core 150.

[0022] In addition, in this invention, the rotary valve 100 is applied to the oral irrigator, the liquid switching process is simple, there is no wear on the water pipe 300 of the dual-tank oral irrigator (see Figure 5, which will be explained later), the structure is stable and durable, and it can be understood that the service life is relatively long.

[0023] 8 and 9, in one embodiment of the present invention, the first sealing portion 151 and the second sealing portion 152 have a mutual difference of 60° to 120° (e.g., 90°) in the circumferential direction of the peripheral surface of the valve core 150, and the valve core 150 simultaneously seals a partial area of ​​the connection port between the first inlet portion 120 and the main portion 141 and a partial area of ​​the connection port between the second inlet portion 130 and the main portion 141, allowing the liquid in the first inlet portion 120 and the liquid in the second inlet portion 130 to enter the valve body 140 simultaneously.

[0024] That is, by controlling the rotation angle of the valve core 150, the outlet portion 110 can be simultaneously connected to the first inlet portion 120 and the second inlet portion 130, and the user can control the liquid ejection ratio as needed. For example, when the connection port between the first inlet portion 120 and the main portion 141 is 20% sealed by the valve core 150 and the connection port between the second inlet portion 130 and the main portion 141 is 80% sealed by the valve core 150, the liquid (clean water) in the first tank 210 (to be introduced later) connected to the first inlet portion 120 accounts for 80% of the liquid ejected from the oral irrigator, and the liquid (mouthwash) in the second tank 220 (to be introduced later) connected to the second inlet portion 130 accounts for 20% of the liquid ejected from the oral irrigator. Therefore, the liquid in the second tank 220 can be filled with a high concentration of mouthwash, and by controlling the ratio of the liquid when in use and diluting the mouthwash with clean water to a suitable concentration, the frequency of refilling the mouthwash in the second tank can be reduced, which is more suited to the user's usage requirements and improves customer adhesion.

[0025] The valve core 150 can be rotated manually, or can be controlled by a motor to achieve passive rotation control. By linking the motor controller with the application program of the user's mobile terminal, the user can define the liquid mixing ratio by himself, and the valve core 150 will rotate by the corresponding angle following the motor to achieve the mixing ratio.

[0026] In one embodiment of the present application, referring to Fig. 8, 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 makes it easy to install the rotary valve 100, for example, by simply inserting it vertically into the corresponding connection port of the tank, so that the structure is simple and the installation is easy. The connection port of the outlet portion 110 for connecting to the water pipe 300 can be oriented upwards for easy connection with the water pipe 300.

[0027] In one embodiment of the present application, referring to FIG. 8 , the inner chamber of the main part 141 may be cylindrical, and axial shoulders 153 are provided at both axial ends of the valve core 150, which abut against the inner wall surface of the main part 141 to make the axes of the valve core 150 and the main part 141 overlap, so that the sealing part can smoothly seal the corresponding inlet part.

[0028] In one embodiment of the present application, the first sealing portion 151 and the second sealing portion 152 may include or be silicone, but of course may be other materials, for example, may be formed of other types of soft materials that can achieve the sealing function.

[0029] In one embodiment of the present application, referring to Fig. 7 and Fig. 8, a hand wheel 154 is connected to the end of the valve core 150. The hand wheel 154 realizes the rotation of the valve core 150, and facilitates the control of the flow and blocking of the corresponding liquid. A rotation angle limiting structure of the hand wheel 154 can be installed at the hand wheel 154, for example, the limit of the clockwise rotation of the hand wheel 154 is set to completely seal the first inlet port 120, and the limit of the counterclockwise rotation is set to completely seal the second inlet port 130. The rotation angle limiting structure can include an arc track, in which the hand wheel 154 is connected to the valve core through a connecting rod, a moving block is installed on the connecting rod, and the moving block is installed in the track, and the position of the moving block is limited through the arc track to realize the limit of the rotation angle of the hand wheel 154.

[0030] 1 to 6, 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 rotary valve 100. Referring to FIG. 6, 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.

[0031] 5, the pump assembly 400 includes a pressure chamber 410, one end of which (e.g., the upper right end of the pressure chamber 410 in the view of FIG. 5) is connected to the water conduit 300, and the liquid in the rotary valve 100 is introduced into the pressure chamber 410. The other end of the pressure chamber (e.g., the upper left end of the pressure chamber 410 in the view of FIG. 5) is connected to a 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 (as shown in FIG. 1, FIG. 2, and FIG. 3).

[0032] As shown by the dotted arrow in FIG. 5, the liquid in the first tank 210 or the second tank 220 can be sprayed from the nozzle 500 after passing through the water guide 300 and the pressure chamber 410. Optionally, the first tank 210 can store the spray cleaning liquid, and the second tank 220 can store the mouthwash, and the volume of the first tank 210 can be larger than the volume of the second tank 220. After the user has completed oral cleaning, the user can use the oral irrigator to spray the mouthwash to rinse the mouth, and there is no need to carry two hygiene products separately, which is relatively convenient to carry. Since the present application uses only one water guide 300 and does not use two pipes (water guides) as in the background art, the structure is relatively simple and the space allocation is more reasonable. Since the water guide 300 is not worn out during the process of switching the operating position of the rotary valve 100, the oral irrigator is more robust and durable.

[0033] 5, 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.

[0034] In one embodiment of the present application, referring to Fig. 3, 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.

[0035] In one embodiment of the present application, referring to Fig. 5, 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 perform a reciprocating motion. When the transmission rod 440 moves upward, the liquid in the pressure chamber 410 is pumped out from the spout 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 .

[0036] 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.

[0037] In one embodiment of the present application, referring to FIG. 4, 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.

[0038] In one embodiment of the present application, referring to FIG. 4, the first tank 210 is located below the second tank 220 .

[0039] 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]

[0040] 100 Rotary valve 110 Exit section 120 1st entrance section 130 2nd entrance section 140 Valve body 141 Main Section 150 Valve core 151 1st sealed part 152 2nd sealed part 153 Axis Shoulder 154 Hand Wheel 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 first inlet portion (120) and the second inlet portion (130) being located on a circumferential surface of the main portion (141), the first inlet portion (120) and the second inlet portion (130) being located at the same position in the circumferential direction of the main portion (141), and being arranged in parallel in the axial direction; a valve core (150) including a first sealing portion (151) and a second sealing portion (152) installed on its peripheral surface, the first sealing portion (151) being used to seal the first inlet portion (120) and the second sealing portion (152) being used to seal the second inlet portion (130), the first sealing portion (151) and the second sealing portion (152) being arranged in a staggered manner both in the circumferential direction and the axial direction of the peripheral surface of the valve core (150), so that the valve core (150) selectively and thoroughly seals one of the first inlet portion (120) and the second inlet portion (130).

2. The rotary valve for an oral irrigator as described in claim 1, characterized in that the mutual difference between the first sealing portion (151) and the second sealing portion (152) in the circumferential direction of the peripheral surface of the valve core (150) is 60° to 120°, and the valve core (150) simultaneously seals a portion of the connection port between the first inlet portion (120) and the main portion (141) and a portion of the connection port between the second inlet portion (130) and the main portion (141), thereby allowing the liquid in the first inlet portion (120) and the liquid in the second inlet portion (130) to enter the valve body (140) simultaneously.

3. The rotary 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).

4. The rotary valve for an oral irrigator according to claim 1, characterized in that the first sealing portion (151) and the second sealing portion (152) are made of silicone.

5. A rotary valve for an oral irrigator as described in claim 1, characterized in that an axial shoulder (153) is provided at both axial ends of the valve core (150), and the axial shoulder (153) abuts against the inner wall surface of the main portion (141) to overlap the axes of the valve core (150) and the main portion (141).

6. The rotary valve for an oral irrigator according to claim 1, characterized in that a hand wheel (154) is connected to an end of the valve core (150).

7. A rotary 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 rotary 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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