Water pick

Abstract

The oral irrigator comprises a nozzle, a first liquid storage bin, a second liquid storage bin, a first pump body and an anti-backflow pipeline assembly, first oral irrigating liquid is stored in the first liquid storage bin, second oral irrigating liquid is stored in the second liquid storage bin, the first pump body sucks the first oral irrigating liquid, and the second liquid storage bin is higher than the first pump body; the anti-backflow pipeline assembly comprises a main flow pipe, a branch flow pipe and a one-way conducting element, the liquid inlet end of the main flow pipe is communicated with a liquid outlet of the first pump body, and the liquid outlet end of the main flow pipe is communicated with the nozzle; the liquid inlet end of the branch pipe is communicated with the second liquid storage bin, the liquid outlet end of the branch pipe is communicated with the main flow pipe, the branch pipe conveys the second tooth washing liquid to the main flow pipe so that the second tooth washing liquid can be mixed with the first tooth washing liquid in the main flow pipe to form mixed liquid, and the one-way communication element is arranged on the branch pipe. According to the embodiment of the invention, the mixed liquid is mixed at the rear end of the first pump body so as to prevent the tooth washing liquid with functional components from corroding or blocking the first pump body, and the branch pipe is provided with the one-way conduction element so as to prevent the mixed liquid from flowing back into the second liquid storage bin.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning, and in particular to a water flosser. Background Art

[0002] The water flosser may include a main unit and a water tank, the water tank is used to store clean water, the water pump of the main unit pumps out the clean water and sprays it onto the teeth through a nozzle in the form of a pulsed water column to clean the user's oral cavity. In the related art, there is a water flosser that mixes clean water with liquid medicine, that is, the user needs to pour the liquid medicine into the water tank so that the clean water and liquid medicine in the water tank are fully mixed to form a mixed liquid, and then the water pump is operated to pump out the mixed liquid. Since the mixed liquid is mixed in the water tank, when the water pump sucks the mixed liquid, the water pump needs to suck the mixed liquid into the water pump, and the liquid medicine has a concentration. If the mixed liquid is sucked into the water pump for a long time, it is easy to cause the water pump to be corroded by the liquid medicine. Utility Model Content

[0003] An embodiment of the present application provides a water flosser, which is intended to prevent water flossing liquid with functional ingredients from corroding a first pump body and to prevent the mixed liquid from flowing back into a second liquid storage tank.

[0004] An embodiment of the present application provides a dental irrigator, which includes a nozzle, a first liquid storage tank, a second liquid storage tank, a first pump body and an anti-backflow pipeline assembly, wherein the first liquid storage tank is used to store a first dental irrigator, and the second liquid storage tank is used to store a second dental irrigator. The first pump body is used to suck the first dental irrigator in the first liquid storage tank, and the height of the second liquid storage tank is higher than the height of the first pump body. The anti-backflow pipeline assembly includes a main pipe, a branch pipe and a one-way conductive element. The liquid inlet end of the main pipe is connected to the liquid outlet of the first pump body, the liquid outlet end of the main pipe is connected to the nozzle, the liquid inlet end of the branch pipe is connected to the second liquid storage tank, and the liquid outlet end of the branch pipe is connected to the main pipe. The branch pipe is used to transport the second dental irrigator to the main pipe so that the first dental irrigator and the second dental irrigator are mixed in the main pipe to form a mixed liquid. The one-way conductive element is arranged on the branch pipe, and the one-way conductive element is used to prevent the mixed liquid from flowing back to the second liquid storage tank.

[0005] Furthermore, the one-way conducting element includes at least one of a first one-way valve and a second pump body.

[0006] Furthermore, the unidirectional conductive element includes a second pump body, which is arranged on the branch tube. The second pump body is used to draw the second dental flushing liquid from the second liquid storage tank and pump it to the main pipe through the branch tube, and the pumping power of the second pump body is greater than the pumping power of the first pump body.

[0007] Furthermore, the one-way conducting element includes a second pump body and a first one-way valve, the second pump body is arranged on the branch tube, the second pump body is used to draw the second dental rinse solution from the second liquid storage tank and pump it to the main pipe through the branch tube, and the pumping power of the second pump body is less than the pumping power of the first pump body, the first one-way valve is arranged on the branch tube and is located downstream of the second pump body, and the first one-way valve is configured to be conductive only when the second dental rinse solution flows from the branch tube to the main pipe.

[0008] Furthermore, the one-way conducting element includes a second pump body, which is arranged on the branch tube, and the second pump body and the second liquid storage tank are arranged along the height direction of the dental irrigator, and the second pump body and the second liquid storage tank as a whole are arranged along the width direction of the dental irrigator with the first pump body.

[0009] Furthermore, the one-way conducting element comprises a second pump body, the second pump body is arranged on the branch tube, and the second pump body and the first pump body are arranged on the same side of one of the mid-section surfaces of the oral irrigator parallel to its own height direction.

[0010] Furthermore, the one-way conducting element includes a second pump body, the second pump body is arranged on the branch pipe, the connecting pipe between the second pump body and the second liquid storage tank is a hose, the branch pipe includes a hose, and the diameter of the hose is not less than 1 mm and not more than 5 mm.

[0011] Furthermore, the one-way conducting element includes a second pump body arranged on the branch tube, and the oral irrigator also includes a detection element and a controller, the detection element is arranged in the second liquid storage tank to detect the remaining amount of the second oral irrigating solution in the second liquid storage tank, or the detection element is arranged on the branch tube to detect the flow rate of the second oral irrigating solution in the branch tube, the controller is electrically connected to the detection element and the second pump body, and the controller is used to control the second pump body to close when the remaining amount is lower than a set remaining amount or the flow rate is lower than a set flow rate.

[0012] Furthermore, the anti-backflow pipeline assembly also includes a second one-way valve, which is arranged on the main pipe and upstream of the connection between the main pipe and the branch pipe, or the second one-way valve is arranged in the first pump body and is configured to be conductive only when the first pump body pumps out the first dental rinse solution.

[0013] Furthermore, the side wall of the second liquid storage tank facing the main pipe has a first branch pipe joint extending toward the main pipe, and the first branch pipe joint is sleeved with the liquid inlet end of the branch pipe.

[0014] Furthermore, the bottom of the second liquid storage bin is provided with a first branch pipe joint, the first branch pipe joint is sleeved with the liquid inlet end of the main pipe, and the branch pipe is entirely located below the second liquid storage bin.

[0015] Furthermore, the first pump body includes a pump casing and a pump body, and the pump body is arranged in the pump casing, wherein the main pipe is a connecting pipe formed by extending from the pump casing, the connecting pipe and the pump casing are an integral component, and the connecting pipe has a second branch pipe joint, and the branch pipe is socketed with the second branch pipe joint.

[0016] Furthermore, the first pump body includes a pump casing, the main pipe is detachably connected to the pump casing and the nozzle, and the main pipe has a second branch pipe joint, the branch pipe is sleeved with the second branch pipe joint, and the second branch pipe joint is arranged upstream of the nozzle.

[0017] Furthermore, the main pipe has a second branch pipe joint, the second liquid storage tank is spaced apart from the main pipe in the width direction of the oral irrigator, and the second branch pipe joint extends toward the second liquid storage tank.

[0018] Furthermore, the main flow pipe has a second branch flow pipe joint, a sealing ring is provided between the branch flow pipe and the second branch flow pipe joint, and / or the branch flow pipe is threadedly connected to the second branch flow pipe joint.

[0019] Furthermore, the main flow pipe includes a first main flow section and a second main flow section, the first main flow section is connected to the liquid outlet of the first pump body, both ends of the second main flow section are connected to the first main flow section and the nozzle, and the second main flow section is equal in length to the first main flow section, wherein the main flow pipe has a second branch pipe joint, and the second branch pipe joint is arranged in the first main flow section.

[0020] Further, the main pipe and the branch pipe are an integrated component, and / or the height of the branch pipe gradually decreases from the second liquid storage tank to the main pipe.

[0021] Further, the diameter of the main flow pipe is larger than the diameter of the branch flow pipe, and / or the diameter of the main flow pipe is larger than the diameter of the flow channel in the nozzle.

[0022] Furthermore, the nozzle has a slot, and the oral irrigator also includes a shell, a snap-on component and a button. The shell has an installation space, and at least part of the second liquid storage tank and the one-way conductive element are arranged in the installation space. The snap-on component is arranged in the installation space and is used to engage with the slot. The button is arranged on the shell and connected to the snap-on component. The button is used to release the engaging relationship between the snap-on component and the slot so that the nozzle can be detachably connected relative to the shell.

[0023] Furthermore, the main flow pipe has a second branch flow pipe joint, wherein the second branch flow pipe joint is spaced apart from the clamping member in the axial direction and / or circumferential direction of the nozzle.

[0024] Furthermore, the second liquid storage tank has an air inlet, and the air inlet is provided with an air inlet tube and / or a waterproof breathable membrane.

[0025] The present application provides a water flosser, which has at least the following two effects:

[0026] First, prevent the dental irrigant with functional ingredients from corroding or clogging the first pump body. The first dental irrigant and the second dental irrigant can be mixed at the rear end of the first pump body to form a mixed liquid, which is then pressurized by the first pump body and sprayed onto the user's teeth through a nozzle. Since the second dental irrigant is a liquid or other functional solvent with whitening, sterilization and other functions, and the second dental irrigant may contain particulate components, the mixed liquid is mixed at the rear end of the first pump body so that the second dental irrigant will not flow through the first pump body. In this way, the second dental irrigant can be prevented from corroding or clogging the first pump body.

[0027] Second, prevent the mixed liquid from flowing back into the second liquid storage tank. By setting a one-way conducting element on the branch pipe, and the one-way conducting element is used to prevent the mixed liquid from flowing back, the mixed liquid can be prevented from flowing back into the second liquid storage tank. Furthermore, since the mixed liquid is prevented from flowing back into the second liquid storage tank, the second dental flushing liquid in the second liquid storage tank can be kept in its original pure state, so that during the process of flushing teeth, the user can conveniently adjust the ratio between the first dental flushing liquid and the second dental flushing liquid in the mixed liquid to achieve the desired specific cleaning effect. If the mixed liquid flows back into the second liquid storage tank, it is difficult to adjust the ratio between the first dental flushing liquid and the second dental flushing liquid in the mixed liquid during the subsequent mixing of the mixed liquid, and a mixed liquid with a specific cleaning effect cannot be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of the structure of a water flosser in one embodiment of the present application;

[0030] Figure 2 A schematic diagram of a partial structure of a water flosser in one embodiment of the present application;

[0031] Figure 3 This is a schematic diagram of a module of a water flosser in one embodiment of the present application;

[0032] Figure 4 This is a schematic diagram of the structure of a water flosser from another perspective in one embodiment of the present application;

[0033] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the water flosser along the CC section;

[0034] Figure 6 This is a schematic diagram of another part of the structure of the oral irrigator in one embodiment of the present application;

[0035] Figure 7 This is a schematic diagram of the exploded structure of another part of the oral irrigator in one embodiment of the present application;

[0036] Figure 8 for Figure 7 The enlarged structural diagram of the middle D part;

[0037] Fig. 9 This is a schematic diagram of a module of an air inlet of a second liquid storage tank in one embodiment of the present application;

[0038] Fig.10 This is a module schematic diagram of the air inlet of the second liquid storage tank in another embodiment of the present application.

[0039] Description of the accompanying figures: 1-water flosser; 10-nozzle; 10a-card slot; 20-housing; 20a-installation space; 30-first liquid storage tank; 40-second liquid storage tank; 40a-air inlet; 41-first branch pipe joint; 42-air inlet capillary; 43-waterproof breathable membrane; 50-first pump body; 51-pump housing; 60-anti-backflow pipeline assembly; 61-main pipe; 611-second branch pipe joint; 62-branch pipe; 63-one-way conducting element; 631-first one-way valve; 632-second pump body; 64-second one-way valve; 70-battery; 80-connector; 90-button. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] See also Figure 1 An embodiment of the present application provides a water flosser 1 , which may include a nozzle 10 and a shell 20 .

[0042] Specifically, the shell 20 serves as an appearance component of the oral irrigator 1, and is suitable for being held or grasped by the user to facilitate the user to hold the oral irrigator 1, and the nozzle 10 is installed on the shell 20. The shell 20 can be a cylindrical structure, and the main structure of the shell 20 can be made of plastic, for example, it can include but is not limited to hard plastic, such as polyethylene, polyester and other thermoplastic plastics. The main structure of the shell 20 can also be made of metal, such as aluminum alloy. The embodiment of the present application does not specifically limit the material used for the main structure of the shell 20.

[0043] See also Figure 2-Figure 3 The shell 20 has an installation space 20 a inside, and the oral irrigator 1 also includes a first liquid storage tank 30 , a second liquid storage tank 40 and a first pump body 50 .

[0044] Specifically, the first liquid storage tank 30 can be arranged in the installation space 20a, or can be arranged outside the installation space 20a, or partially arranged in the installation space 20a. At least part of the second liquid storage tank 40 and the first pump body 50 are installed in the installation space 20a, so that the housing 20 can protect the second liquid storage tank 40 and the first pump body 50 installed in the installation space 20a, and the height of the second liquid storage tank is higher than the height of the first pump body 50. The first liquid storage tank 30 is used to store the first dental rinse, the second liquid storage tank 40 is used to store the second dental rinse, and the first pump body 50 is used to suck the first dental rinse in the first liquid storage tank 30. The types of the first dental rinse and the second dental rinse in the embodiment of the present application are not specifically limited. For example, the first dental rinse can be clean water, and the second dental rinse can be a medicinal liquid or other functional solvent with whitening, sterilization and other functions. The following embodiments take the first dental rinse as clean water and the second dental rinse as a medicinal liquid as an example.

[0045] See also Figure 3 Furthermore, the oral irrigator 1 also includes an anti-backflow pipeline assembly 60, which is also arranged in the installation space 20a, wherein the anti-backflow pipeline assembly 60 may include a main pipe 61 and a branch pipe 62.

[0046] Specifically, the liquid inlet end of the main pipe 61 is connected to the liquid outlet of the first pump body 50, the liquid outlet end of the main pipe 61 is connected to the nozzle 10, the liquid inlet end of the branch pipe 62 is connected to the second liquid storage tank 40, and the liquid outlet end of the branch pipe 62 is connected to the main pipe 61. It can be understood that when the user uses the dental flosser 1, the first pump body 50 works to suck the first dental flossing liquid in the first liquid storage tank 30 into the first pump body 50 from the liquid inlet of the first pump body 50, and then the first pump body 50 pressurizes the first dental flossing liquid in the first pump body 50 and pumps it into the main pipe 61 from the liquid outlet of the first pump body 50, and the branch pipe 62 can be used to transport the second dental flossing liquid in the second liquid storage tank 40 to the main pipe 61, so that the first dental flossing liquid and the second dental flossing liquid are in the main pipe 61. The first and second irrigating liquids are mixed in the tube 61 to form a mixed liquid, that is, the first irrigating liquid and the second irrigating liquid can be mixed at the rear end of the first pump body 50 (with the liquid flow direction as a reference, the main pipe 61 is located at the rear end of the first pump body 50) to form a mixed liquid, and then the first pump body 50 pressurizes the mixed liquid and sprays it onto the user's teeth through the nozzle 10. At this time, the irrigator 1 not only uses clean water as a medium to clean the user's teeth, but also uses the mixed liquid formed by the first and second irrigating liquids as a medium to clean the user's teeth. In addition to cleaning the dirt on the surface of the teeth, the mixed liquid can also achieve whitening, sterilization, deodorization and removal of dental plaque, thereby realizing the multifunctional cleaning of the user's teeth by the irrigator 1. And because the second irrigating liquid is a liquid or other functional solvent with whitening, sterilization and other functions, the mixed liquid is mixed at the rear end of the first pump body 50 so that the mixed liquid does not need to flow through the first pump body 50, so that the second irrigating liquid in the mixed liquid can be prevented from corroding the first pump body 50.

[0047] In addition, when the second dental rinse is a soluble particle solvent, the second dental rinse may contain particulate components. If the first dental rinse and the second dental rinse are set at the front end of the first pump body 50 for mixing, that is, the mixed liquid is mixed at the front end of the first pump body 50, and when the first pump body 50 works for a long time, since the mixed liquid needs to flow through the first pump body 50, and the second dental rinse may contain particulate components, it may cause blockage of the first pump body 50. The mixed liquid is set to be mixed at the rear end of the first pump body 50 so that the mixed liquid does not need to flow through the first pump body 50. In this way, the second dental rinse in the mixed liquid can avoid clogging the first pump body 50.

[0048] At the same time, since the branch pipe 62 is connected to the main pipe 61, when the nozzle 10 is replaced, the branch pipe 62 and the nozzle 10 do not need to be disassembled, which not only improves the disassembly efficiency of the nozzle 10, but also eliminates the need to consider the sealing problem when the branch pipe 62 and the nozzle 10 are connected.

[0049] Please continue reading Figure 3 Furthermore, the anti-backflow pipeline assembly 60 also includes a unidirectional conductive element 63, wherein the unidirectional conductive element 63 is arranged on the branch pipe 62. It can be understood that after the mixed liquid is fully mixed at the rear end of the first pump body 50, the first pump body 50 pressurizes the mixed liquid and then sprays it onto the user's teeth through the nozzle 10. Since the branch pipe 62 is connected to the main pipe 61 and the second liquid storage tank 40, when the first dental rinse solution and the second dental rinse solution are mixed to form a mixed liquid, the mixed liquid may flow back into the second liquid storage tank 40. By arranging the unidirectional conductive element 63 on the branch pipe 62, and the unidirectional conductive element 63 is used to prevent the backflow of the mixed liquid, the mixed liquid can be prevented from flowing back into the second liquid storage tank 40. Furthermore, since the mixed liquid is prevented from flowing back into the second liquid storage tank 40, the second dental flushing liquid in the second liquid storage tank 40 can maintain its original pure state, so that the user can conveniently adjust the ratio between the first dental flushing liquid and the second dental flushing liquid in the mixed liquid during the process of flushing teeth to achieve the desired specific cleaning effect. If the mixed liquid flows back into the second liquid storage tank 40, it will be difficult to adjust the ratio between the first dental flushing liquid and the second dental flushing liquid in the subsequent mixing of the mixed liquid, and it is impossible to obtain a mixed liquid with a specific cleaning effect.

[0050] In addition, due to the presence of the first pump body 50, the mixed liquid will not flow back to the first liquid storage tank 30, so that the first dental rinse in the first liquid storage tank 30 can maintain its original pure state, which is convenient for the subsequent ratio adjustment between the first dental rinse and the second dental rinse in the mixed liquid. When the first dental rinse is clear water and the second dental rinse is a functional liquid, the functional liquid can be prevented from flowing back into the first liquid storage tank 30, thereby preventing the functional liquid from adhering to the first liquid storage tank 30, thereby facilitating the cleaning of the first liquid storage tank 30.

[0051] Based on the above embodiments, the embodiments of the present application have at least the following two effects:

[0052] First, prevent the dental irrigant with functional ingredients from corroding or clogging the first pump body 50. The first dental irrigant and the second dental irrigant can be mixed at the rear end of the first pump body 50 to form a mixed liquid, and then the first pump body 50 pressurizes the mixed liquid and sprays it onto the user's teeth through the nozzle 10. Since the second dental irrigant is a liquid or other functional solvent with whitening, sterilization and other functions, and the second dental irrigant may contain particulate components, the mixed liquid is mixed at the rear end of the first pump body 50 so that the second dental irrigant will not flow through the first pump body 50. In this way, the second dental irrigant can be prevented from corroding or clogging the first pump body 50.

[0053] Second, prevent the mixed liquid from flowing back into the second liquid storage tank 40. By setting a one-way conducting element 63 on the branch pipe 62, and the one-way conducting element 63 is used to prevent the mixed liquid from flowing back, the mixed liquid can be prevented from flowing back into the second liquid storage tank 40. Furthermore, since the mixed liquid is prevented from flowing back into the second liquid storage tank 40, the second dental flushing liquid in the second liquid storage tank 40 can be kept in its original pure state, so that during the process of dental flushing, the user can conveniently adjust the ratio between the first dental flushing liquid and the second dental flushing liquid in the mixed liquid to achieve the desired specific cleaning effect. If the mixed liquid flows back into the second liquid storage tank 40, it is difficult to adjust the ratio between the first dental flushing liquid and the second dental flushing liquid in the mixed liquid when the mixed liquid is subsequently prepared, and the mixed liquid with a specific cleaning effect cannot be obtained.

[0054] See also Figure 3-Figure 4 In some embodiments, the one-way conducting element 63 includes at least one of a first one-way valve 631 and a second pump body 632, which is not limited in the embodiment of the present application. The first one-way valve 631 may be one of a flap valve, an umbrella valve, a solenoid valve, and a duckbill valve, and the second pump body 632 may be a positive displacement pump body, which may include at least one of a diaphragm pump, a plunger pump, and a peristaltic pump. The embodiment of the present application does not specifically limit the types of the first one-way valve 631 and the second pump body 632.

[0055] For example, when the second pump body 632 is a peristaltic pump, the flow rate of the second rinsing solution drawn into the branch tube 62 can be controlled by controlling the motor speed of the peristaltic pump, thereby achieving the effect of adjusting the mixing ratio of the second rinsing solution and the first rinsing solution.

[0056] See also Figure 4 In some embodiments, when the unidirectional conductive element 63 includes a second pump body 632, the second pump body 632 is disposed on the branch tube 62, and the second pump body 632 can be used to extract the dental flushing solution in the second liquid storage tank 40 from the second liquid storage tank 40, and transport the second dental flushing solution to the main pipe 61 through the branch tube 62, so that the second dental flushing solution is mixed with the first dental flushing solution to form a mixed liquid, and the pumping power of the second pump body 632 is greater than the pumping power of the first pump body 50. It can be understood that when the pumping power of the second pump body 632 is greater than the pumping power of the first pump body 50, the output pressure of the first pump body 50 is less than the output pressure of the second pump body 632, so that the second pump body 632 can extract the second dental flushing solution into the branch tube 62, and transport the second dental flushing solution to the main pipe 61 through the branch tube 62, thereby achieving the mixing of the first dental flushing solution and the second dental flushing solution.

[0057] See also Figure 3In one embodiment, when the one-way conducting element 63 includes a second pump body 632 and a first one-way valve 631 , the second pump body 632 and the first one-way valve 631 are both arranged on the branch pipe 62 , and the first one-way valve 631 is located downstream of the second pump body 632 .

[0058] Specifically, when the pumping power of the second pump body 632 is greater than the pumping power of the first pump body 50, the output pressure of the first pump body 50 is less than the output pressure of the second pump body 632, that is, the first pump body 50 will generate negative pressure, so that the first pump body 50 sucks the first dental rinse solution in the first liquid storage tank 30, and when the first pump body 50 generates negative pressure, the first one-way valve 631 is in an open state, that is, the first one-way valve 631 is configured to operate the second pump body 632 only when the second dental rinse solution flows from the branch tube 62 to the main tube 61. On the one hand, the conduction can enable the second pump body 632 to extract the second dental rinse solution into the branch tube 62, and transmit the second dental rinse solution to the main tube 61 through the branch tube 62, thereby achieving the mixing of the first dental rinse solution and the second dental rinse solution. On the other hand, it can prevent the first dental rinse solution from entering the branch tube 62 due to the large water pressure of the first dental rinse solution in the main tube 61.

[0059] When the pumping power of the second pump body 632 is less than the pumping power of the first pump body 50, the output pressure of the first pump body 50 is greater than the output pressure of the second pump body 632, that is, the first pump body 50 will generate positive pressure, and the first one-way valve 631 is in a closed state, so that the first pump body 50 can pump the first dental flushing liquid into the main pipe 61, and then the first dental flushing liquid pumped out by the first pump body 50 can stay at the rear end of the first pump body 50 and mix with the second dental flushing liquid to form a mixed liquid, and then the first pump body 50 pressurizes the mixed liquid and sprays it onto the user's teeth through the nozzle 10.

[0060] Furthermore, when the second pump body 632 stops working or the nozzle 10 is disassembled, since the first one-way valve 631 is arranged on the branch pipe 62, and the first one-way valve 631 is in a closed state when the second pump body 632 stops working or the nozzle 10 is disassembled from the shell 20, dirt and impurities can be prevented from entering the second liquid storage tank 40.

[0061] See also Figure 4In some embodiments, the second pump body 632 and the second liquid storage tank 40 are arranged along the height direction AA of the oral irrigator 1, that is, the second liquid storage tank 40 can be located above the second pump body 632, so that the second pump body 632 and the second liquid storage tank 40 are located on the same side, and the second pump body 632 and the second liquid storage tank 40 constitute a whole and the first pump body 50 are arranged along the width direction BB of the oral irrigator 1. Compared with the second pump body 632, the first pump body 50 and the second liquid storage tank 40 are all arranged along the width direction BB of the oral irrigator 1, by arranging the second pump body 632 and the second liquid storage tank 40 constitute a whole and the first pump body 50 along the width direction BB of the oral irrigator 1, the size of the oral irrigator 1 in the width direction BB can be reduced, so that it can be easier for the user to hold.

[0062] See also Figure 4-Figure 5 In some embodiments, the second pump body 632 and the first pump body 50 are arranged on the same side of one of the mid-sections of the oral irrigator 1 which is parallel to its own height direction AA, that is, the water inlet of the second pump body 632 and the first pump body 50 can be arranged on the same side, so that the path connecting the branch tube 62 and the main tube 61 is shortened, thereby shortening the path of the second oral irrigator flowing in the branch tube 62, thereby improving the efficiency of the second oral irrigator flowing to the rear end of the first pump body 50.

[0063] In some embodiments, the connecting pipe between the second pump body 632 and the second liquid storage tank 40 is a hose, that is, the branch pipe 62 may include a hose connecting the second pump body 632 and the second liquid storage tank 40. The hose may be a plastic hose, a metal hose, or a hard hose. This application does not make any specific limitations on this.

[0064] Furthermore, the diameter of the hose is not less than 1 mm and not more than 5 mm, and the diameter of the hose can be 1 mm, 2 mm, 3 mm, 4 mm, or 5 mm. In this way, the second dental flushing solution can form a liquid film in the hose and flow to the rear end of the first pump body 50, so that there is less air at the rear end of the first pump body 50, thereby increasing the speed at which the first pump body 50 pumps out the mixed liquid.

[0065] If the diameter of the hose is greater than 5 mm, at this time, the diameter of the hose is larger, and the second dental flushing solution and air in the second liquid storage tank 40 can be mixed and flow through the hose to the rear end of the first pump body 50. When there is more air at the rear end of the first pump body 50, it is easy to cause the speed of the first pump body 50 pumping out the mixed liquid to decrease. If the diameter of the hose is less than 1 mm, at this time, the diameter of the hose is smaller, which is easy to cause the second pump body 632 to draw out a smaller flow of the second dental flushing solution to the branch tube 62, that is, the flow of the second dental flushing solution flowing to the rear end of the first pump body 50 is small, which is easy to affect the mixing ratio of the first dental flushing solution and the second dental flushing solution to form a mixed liquid, thereby causing the dental flushing device 1 to be unable to obtain a mixed liquid with a specific cleaning effect.

[0066] In some embodiments, the oral irrigator 1 also includes a detection element and a controller. The detection element can be set in the second liquid storage tank 40 or on the branch tube 62. The embodiment of the present application does not specifically limit the location of the detection element. The controller can be electrically connected to the detection element and the second pump body 632.

[0067] Specifically, if the detection element is disposed in the second liquid storage tank 40, the detection element can detect the remaining amount of the second dental rinse solution in the second liquid storage tank 40. When the detection element detects that the remaining amount of the second dental rinse solution in the second liquid storage tank 40 is lower than the set remaining amount, the detection element sends a signal to the controller indicating that the remaining amount of the second dental rinse solution is lower than the set remaining amount. The controller can control the second pump body 632 to close according to the received signal indicating that the remaining amount of the second dental rinse solution is lower than the set remaining amount, so that the second pump body 632 stops working. In this way, the second pump body 632 can be prevented from idling.

[0068] If the detection element is set on the branch tube 62, the detection element can detect the flow rate of the second dental rinse solution in the branch tube 62. When the detection element detects that the flow rate of the second dental rinse solution in the branch tube 62 is lower than the set flow rate, the detection element can send a signal to the controller that the flow rate of the second dental rinse solution is lower than the set flow rate. The controller can control the second pump body 632 to close according to the received signal that the remaining amount of the second dental rinse solution is lower than the set remaining amount, so that the second pump body 632 stops working. In this way, the second pump body 632 can be prevented from idling.

[0069] See also Figure 3 In some embodiments, the anti-backflow pipeline assembly 60 also includes a second one-way valve 64, wherein the second one-way valve 64 can be arranged on the main pipe 61 or in the first pump body 50, and the embodiment of the present application does not make specific limitations on this.

[0070] Exemplarily, when the second one-way valve 64 is disposed in the first pump body 50, when the first pump body 50 is working and generates negative pressure, the first pump body 50 will suck the first dental flushing liquid in the first liquid storage tank 30 into the first pump body 50. At this time, the second one-way valve 64 is closed. When the first pump body 50 is working and generates positive pressure, the first pump body 50 will draw the first dental flushing liquid in the first pump body 50 into the main flow pipe 61. At this time, the second one-way valve 64 is opened, that is, the first dental flushing liquid is pumped out of the first pump body 50. When the first tooth rinse solution is turned on, the second one-way valve 64 is turned on to facilitate the first tooth rinse solution to be pumped out of the main pipe 61, and the second one-way valve 64 is arranged in the second pump body 632. According to the design principle of the second one-way valve 64, that is, the second one-way valve 64 is a control valve in which the fluid can only flow along the water inlet of the second one-way valve 64, while the fluid at the water outlet of the second one-way valve 64 cannot flow back. In this way, the mixed liquid can be prevented from flowing back into the first pump body 50, thereby preventing the tooth rinse solution with functional components from corroding the first pump body 50.

[0071] Please continue reading Figure 3 For example, when the second one-way valve 64 is disposed on the main pipe 61, the second one-way valve 64 can be located upstream of the connection point between the main pipe 61 and the branch pipe 62. When the second dental rinse flows into the main pipe 61 and mixes with the first dental rinse, the presence of the second one-way valve 64 can prevent the mixed liquid from flowing back into the first pump body 50. In this way, the mixed liquid can be prevented from flowing back into the first pump body 50, thereby preventing the dental rinse with functional components from corroding the first pump body 50.

[0072] In some embodiments, the first pump body 50 can be a spherical pump, which is a rotating volumetric pump body, and when the rotor in the spherical pump rotates along with the active shaft and the passive shaft that intersect at a certain angle, the rotor will perform a swinging motion to cause the cavity in the spherical pump to open and close regularly, that is, the first dental flushing liquid can enter from the liquid inlet of the spherical pump, and as the rotor swings, the first dental flushing liquid flows out from the liquid outlet of the spherical pump, thereby realizing the transmission of the first dental flushing liquid in the spherical pump to the main pipe 61.

[0073] Further, according to the working principle of the ball pump, that is, the first dental rinse enters from the liquid inlet of the ball pump, and as the rotor swings, the first dental rinse flows out from the liquid outlet of the ball pump, so the second one-way valve 64 can be set upstream or downstream of the ball pump, or the second one-way valve 64 may not be set, and the embodiment of the present application does not make specific limitations on this.

[0074] In some embodiments, the side wall of the second liquid storage tank 40 facing the main pipe 61 has a first branch pipe joint 41, the first branch pipe joint 41 is sleeved with the liquid inlet end of the branch pipe 62, and the first branch pipe joint 41 extends toward the main pipe 61, that is, the first branch pipe joint 41 is closer to the main pipe 61, so that the path connecting the branch pipe 62 and the main pipe 61 is shortened. When the second dental flushing liquid in the second liquid storage tank 40 flows into the branch pipe 62, the path connecting the branch pipe 62 and the main pipe 61 is shortened, so the flow path of the second dental flushing liquid on the branch pipe 62 is shortened, so that the second dental flushing liquid can flow to the rear end of the first pump body 50 in time, thereby increasing the speed of the second dental flushing liquid flowing to the rear end of the first pump body 50.

[0075] See also Figure 6 In some embodiments, the bottom of the second liquid storage tank 40 has a first branch pipe joint 41, the first branch pipe joint 41 is sleeved with the liquid inlet end of the branch pipe 62, and the branch pipe 62 is located as a whole below the second liquid storage tank 40. When the second dental flushing solution is transported to the branch pipe 62, since the branch pipe 62 is located as a whole below the second liquid storage tank 40, that is, the height of the liquid inlet end of the branch pipe 62 is higher than the height of the branch pipe 62, the second liquid storage tank 40 can flow the second dental flushing solution in the second liquid storage tank 40 into the branch pipe 62 under the action of gravity, so that the second dental flushing solution can flow to the rear end of the first pump body 50 in time to mix with the first dental flushing solution, thereby increasing the speed of the second dental flushing solution flowing to the rear end of the first pump body 50.

[0076] Please continue reading Figure 6 In some embodiments, the first pump body 50 may include a pump casing 51 and a pump body.

[0077] Specifically, the pump housing 51 is provided with a liquid inlet and a liquid outlet which are connected to the inner cavity of the pump housing 51, that is, the liquid inlet and the liquid outlet of the first pump body 50. The pump body is arranged in the inner cavity of the pump housing 51 so that the pump body can be protected by the pump housing 51. The pump body may include a motor and a pump body, etc., and the water flosser 1 also includes a battery 70. The battery 70 is arranged in the installation space 20a, and the battery 70 can power the motor. The motor is connected to the pump body in a transmission connection, and the pump body is connected to the main pipe 61. It can be understood that when the battery 70 powers the motor, the motor in the first pump body 50 works, so that the motor is connected to the pump body in a transmission connection, thereby realizing that the first pump body 50 pressurizes the mixed liquid in the main pipe 61 and sprays it onto the user's teeth through the nozzle 10.

[0078] Furthermore, the main flow pipe 61 is a connecting pipe extended from the pump housing 51, and the connecting pipe and the pump housing 51 are an integral component. At this time, the connecting pipe is a part of the first pump body 50. It can be understood that the main flow pipe 61 and the first pump body 50 are an integral component. In this way, the steps of assembling the main flow pipe 61 and the first pump body 50 can be reduced, thereby improving the assembly efficiency of the oral irrigator 1.

[0079] Furthermore, the connecting tube may have a second branch tube joint 611. Since the main tube 61 is a connecting tube formed by extending the pump housing 51, it can be understood that the main tube 61 may have a second branch tube joint 611, wherein the branch tube 62 is sleeved with the second branch tube joint 611 to connect the branch tube 62 with the main tube 61, so that the second dental flushing solution in the second liquid storage tank 40 is conveniently transported to the main tube 61.

[0080] Please continue reading Figure 6 Based on the fact that the first pump body 50 includes a pump housing 51, in some embodiments, the main pipe 61, the pump housing 51 and the nozzle 10 are all detachably connected, that is, the main pipe 61, the pump housing 51 and the nozzle 10 are separately arranged. When one of the main pipe 61, the first pump body 50 and the nozzle 10 is damaged, only the damaged part needs to be replaced, thus saving the maintenance cost of the oral irrigator 1. Since the branch pipe 62 is connected to the main pipe 61, when the nozzle 10 is replaced, the branch pipe 62 and the nozzle 10 do not need to be disassembled, which not only improves the disassembly efficiency of the nozzle 10, but also does not need to consider the sealing problem of the connection between the branch pipe 62 and the nozzle 10.

[0081] Furthermore, the main pipe 61 may have a second branch pipe joint 611, the branch pipe 62 is sleeved with the second branch pipe joint 611, and the second branch pipe joint 611 is arranged upstream of the nozzle 10. It can be understood that when the first dental rinse and the second dental rinse form a mixed liquid in the main pipe 61, since the second branch pipe joint 611 is arranged farther away from the liquid outlet of the nozzle 10, that is, the mixed liquid formed by the first dental rinse and the second dental rinse can be closer to the liquid inlet end of the main pipe 61, so that the conveying path of the mixed liquid becomes longer, thereby improving the mixing uniformity of the mixed liquid.

[0082] Please continue reading Figure 6In some embodiments, the second liquid storage tank 40 is spaced apart from the main pipe 61 in the width direction BB of the oral irrigator 1, that is, in the width direction BB of the oral irrigator 1, the main pipe 61 is spaced apart from the second liquid storage tank 40, and the second branch pipe joint 611 on the main pipe 61 extends toward the second liquid storage tank 40. It can be understood that the branch pipe 62 can connect the second branch pipe joint 611 and the second liquid storage tank 40, and because the second branch pipe joint 611 is closer to the second liquid storage tank 40, the branch pipe 62 needs to be shorter in length, so that the path of the second dental irrigant flowing on the branch pipe 62 is shortened, so that the second dental irrigant can flow to the rear end of the first pump body 50 in time, thereby increasing the speed of the second dental irrigant flowing to the rear end of the first pump body 50.

[0083] In some embodiments, a sealing ring may be provided between the branch tube 62 and the second branch tube connector 611 , that is, a sealing ring may be provided at the connection between the branch tube 62 and the second branch tube connector 611 of the main tube 61 , so as to prevent the second dental rinse solution from leaking out of the branch tube 62 .

[0084] In another embodiment, the branch pipe 62 can be connected to the second branch pipe joint 611 by threads, that is, the second branch pipe joint 611 has multiple threads, and the branch pipe 62 can be provided with a threaded part that cooperates with the threads on the second branch pipe joint 611, so that the branch pipe 62 is connected to the main pipe 61, thereby improving the stability of the connection between the branch pipe 62 and the main pipe 61.

[0085] In some other embodiments, a sealing ring can be provided between the branch tube 62 and the second branch tube connector 611, and the branch tube 62 and the second branch tube connector 611 are connected by threads. In this way, on the one hand, the second dental flushing solution can be prevented from leaking out of the branch tube 62, and on the other hand, the stability and convenience of the connection between the branch tube 62 and the main tube 61 are improved.

[0086] In some embodiments, the main flow pipe 61 may include a first main flow section and a second main flow section.

[0087] Specifically, the first mainstream section is connected to the liquid outlet of the first pump body 50, so that the first pump body 50 can pump the dental flushing liquid in the first pump body 50 into the first mainstream section through the liquid outlet of the first pump body 50, and both ends of the second mainstream section are connected to the first mainstream section and the nozzle 10, that is, one end of the second mainstream section is connected to the end of the first mainstream section away from the liquid outlet of the first pump body 50, and the other end of the second mainstream section is connected to the nozzle 10, and the second mainstream section is equal in length to the first mainstream section, wherein the second branch pipe joint 611 is arranged on the first mainstream section, so that the first dental flushing liquid and the second dental flushing liquid are mixed in the first mainstream section to form a mixed liquid, and when the first pump body 50 works to pump out the mixed liquid under pressure, the mixed liquid needs to flow through the second mainstream section and the flow channel in the nozzle 10, and then the mixed liquid is sprayed onto the user's teeth from the liquid outlet of the nozzle 10, so that the path through which the mixed liquid flows becomes longer, thereby improving the mixing uniformity of the mixed liquid.

[0088] In some embodiments, the main tube 61 and the branch tube 62 can be an integral component, that is, the main tube 61 and the branch tube 62 are not detachable. When assembling the oral irrigator 1, the step of assembling the branch tube 62 on the main tube 61 can be omitted. In this way, the assembly efficiency of the oral irrigator 1 can be improved.

[0089] Furthermore, since the main flow pipe 61 and the branch flow pipe 62 can be an integrated component, leakage at the connection point between the main flow pipe 61 and the branch flow pipe 62 can be avoided.

[0090] In other embodiments, the branch tube 62 can be used to connect the second liquid storage tank 40 and the main pipe 61, so that the second dental rinse solution in the second liquid storage tank 40 can flow into the branch tube 62, and the branch tube 62 then transports the second dental rinse solution to the main pipe 61 to mix with the first dental rinse solution, and the height of the branch tube 62 gradually decreases from the second liquid storage tank 40 to the main pipe 61, and the height of the second liquid storage tank 40 can be higher than the connection between the main pipe 61 and the branch tube 62, that is, the height of the second liquid storage tank 40 is higher than the height of the first pump body 50. In this way, on the one hand, the second dental rinse solution can accelerate the speed of flowing into the main pipe 61 under the action of its own gravity to increase the speed of the second dental rinse solution flowing to the rear end of the first pump body 50, and on the other hand, it can prevent the mixed liquid staying in the main pipe 61 from flowing back into the branch tube 62.

[0091] See also Figure 3In some other embodiments, the main pipe 61 and the branch pipe 62 are an integrated component, and the branch pipe 62 is used to connect the second liquid storage tank 40 with the main pipe 61, and the height of the branch pipe 62 is gradually reduced. It can be understood that the main pipe 61 and the branch pipe 62 are not removable, so that when the oral irrigator 1 is assembled, the assembly steps of the main pipe 61 and the branch pipe 62 can be omitted. In this way, the assembly efficiency of the oral irrigator 1 can be improved. At the same time, since the height of the branch pipe 62 is gradually reduced, the second dental flushing liquid can accelerate the flow speed into the main pipe 61 under the action of its own gravity, so as to increase the speed of the second dental flushing liquid flowing to the rear end of the first pump body 50, and prevent the mixed liquid remaining in the main pipe 61 from flowing back into the branch pipe 62.

[0092] Please continue reading Figure 3 In some embodiments, the diameter of the main pipe 61 is larger than the diameter of the branch pipe 62, or the diameter of the main pipe 61 is larger than the diameter of the flow channel in the nozzle 10, or when the diameter of the main pipe 61 is larger than the diameter of the branch pipe 62, the diameter of the main pipe 61 is also larger than the diameter of the flow channel in the nozzle 10. The embodiments of the present application do not make specific limitations on this.

[0093] Exemplarily, when the diameter of the main pipe 61 is larger than the diameter of the branch pipe 62, and the diameter of the main pipe 61 is also larger than the diameter of the flow channel in the nozzle 10, that is, the diameter of the branch pipe 62 and the diameter of the flow channel in the nozzle 10 are both smaller than the diameter of the main pipe 61, the mixed liquid can be mixed in the main pipe 61 with a larger diameter, thereby improving the mixing uniformity of the mixed liquid.

[0094] See also Figure 6-Figure 8 In some embodiments, the oral irrigator 1 further includes a clip 80 and a button 90 .

[0095] Specifically, the clamping member 80 is arranged in the installation space 20a, wherein the clamping member 80 can be a spring, a card, or other parts that can be clamped, and the embodiment of the present application does not specifically limit this. The nozzle 10 has a clamping slot 10a, wherein the clamping member 80 extends into the clamping slot 10a, and is used to be clamped with the clamping slot 10a, so that the nozzle 10 can be installed on the housing 20 of the oral irrigator 1, and the button 90 is arranged on the housing 20 and connected to the clamping member 80. The button 90 can be used to release the clamping relationship between the clamping member 80 and the clamping slot 10a. It can be understood that when the user presses the button 90, the clamping member 80 will be separated from the clamping slot 10a, so that the nozzle 10 is detachably connected with respect to the housing 20, and the nozzle 10 can be separated from the housing 20 only by pressing the button 90, so that the efficiency of disassembly of the nozzle 10 can be improved.

[0096] Furthermore, in some embodiments, when the nozzle 10 is installed on the housing 20, the clip 80 will extend into the slot 10a, and in the axial direction of the nozzle 10 or in the circumferential direction of the nozzle 10, the second branch pipe connector 611 and the clip 80 are spaced apart. In this way, when the user presses the button 90 to move the clip 80, since the second branch pipe connector 611 and the clip 80 are spaced apart, not only can the clip 80 be prevented from contacting the branch pipe 62, but also the clip 80 can be prevented from falling off.

[0097] See also Figure 9-10 In some embodiments, the second liquid storage tank 40 has an air inlet 40a. It can be understood that when the second pump body 632 needs to extract the second dental flushing solution in the second liquid storage tank 40, an air inlet 40a can be set in the second liquid storage tank 40, and the external air of the dental flosser 1 can enter the second liquid storage tank 40 through the air inlet 40a to avoid the situation where the second pump body 632 cannot extract the second dental flushing solution due to the formation of negative pressure inside the second liquid storage tank 40. However, the dental flosser 1 will be affected by the change of air pressure or the temperature difference between day and night, and the air in the second liquid storage tank 40 will expand and contract, thereby causing the second dental flushing solution in the second liquid storage tank 40.

[0098] In order to solve the problem of the second dental flushing liquid in the second liquid storage tank 40 leaking out from the air inlet 40a, further, an air inlet tube 42 can be provided at the air inlet 40a, and a waterproof breathable membrane 43 can also be provided. The air inlet tube 42 and the waterproof breathable membrane 43 can also be provided at the same time, which is not limited to the embodiment of the present application.

[0099] See also Fig. 9 For example, if an air inlet capillary 42 is provided at the air inlet 40a, when the water flosser 1 is affected by the air pressure or the temperature difference between day and night, causing the air in the second liquid storage tank 40 to expand and contract, since the air inlet capillary 42 is provided at the air inlet 40a, the expansion of the air in the second liquid storage tank 40 can squeeze the second water flossing liquid into the air inlet capillary 42, so that the second water flossing liquid is stored in the air inlet capillary 42, and the contraction of the air in the second liquid storage tank 40 can absorb the second water flossing liquid stored in the air inlet capillary 42 back into the second liquid storage tank 40. In this way, the second water flossing liquid can be prevented from leaking from the air inlet 40a into the installation space 20a of the casing.

[0100] See also Fig.10For example, if a waterproof breathable membrane 43 is provided at the air inlet 40a, when the water flosser 1 is affected by the air pressure or the temperature difference between day and night, causing the air in the second liquid storage tank 40 to expand and contract, since the waterproof breathable membrane 43 is provided at the air inlet 40a, the expansion of the air in the second liquid storage tank 40 can squeeze the second water flossing liquid into the waterproof breathable membrane 43, so that the second water flossing liquid is stored in the waterproof breathable membrane 43, and the contraction of the air in the second liquid storage tank 40 can absorb the second water flossing liquid stored in the waterproof breathable membrane 43 back into the second liquid storage tank 40. In this way, not only the second water flossing liquid is prevented from leaking from the air inlet 40a into the installation space 20a of the casing, but also the external air of the water flosser 1 can enter the second liquid storage tank 40 through the waterproof breathable membrane 43.

[0101] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0102] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A water flosser, characterized in that: include: nozzle; A first liquid storage tank, used for storing a first dental flushing solution; The second liquid storage tank is used to store the second tooth flushing solution; a first pump body, used for pumping the first dental flushing solution in the first liquid storage tank, and the height of the second liquid storage tank is higher than the height of the first pump body; as well as, An anti-backflow pipeline assembly, the anti-backflow pipeline assembly comprising: A main pipe, the liquid inlet end of which is connected to the liquid outlet of the first pump body, and the liquid outlet end of which is connected to the nozzle; a branch pipe, whose liquid inlet end is connected to the second liquid storage tank and whose liquid outlet end is connected to the main pipe, and the branch pipe is used to transport the second dental rinse solution to the main pipe, so that the first dental rinse solution and the second dental rinse solution are mixed in the main pipe to form a mixed solution; and A one-way conducting element is arranged on the branch pipe, and the one-way conducting element is used to prevent the mixed liquid from flowing back to the second liquid storage tank.

2. The oral rinser according to claim 1, characterized in that: The one-way conducting element includes at least one of a first one-way valve and a second pump body.

3. The oral rinser according to claim 1, characterized in that: The unidirectional conductive element comprises: The second pump body is arranged on the branch pipe, and is used for extracting the second dental flushing liquid from the second liquid storage tank and pumping it to the main pipe through the branch pipe, and the pumping power of the second pump body is greater than the pumping power of the first pump body.

4. The oral rinser according to claim 1, characterized in that: The unidirectional conductive element comprises: a second pump body, disposed on the branch pipe, for extracting the second dental flushing solution from the second liquid storage tank and pumping it to the main pipe through the branch pipe, and the pumping power of the second pump body is less than the pumping power of the first pump body; and The first one-way valve is disposed on the branch pipe and located downstream of the second pump body, and is configured to be conductive only when the second dental rinse solution flows from the branch pipe to the main pipe.

5. The oral rinser according to claim 1, characterized in that: The unidirectional conductive element comprises: The second pump body is arranged on the branch pipe, and the second pump body and the second liquid storage tank are arranged along the height direction of the oral irrigator, and the second pump body and the second liquid storage tank as a whole are arranged along the width direction of the oral irrigator with the first pump body.

6. The oral rinser according to claim 1, characterized in that: The unidirectional conductive element comprises: The second pump body is arranged on the branch pipe, and the second pump body and the first pump body are arranged on the same side of one of the mid-section planes of the oral irrigator which is parallel to its own height direction.

7. The oral rinser according to claim 1, characterized in that: The unidirectional conductive element comprises: The second pump body is arranged on the branch pipe. The connecting pipe between the second pump body and the second liquid storage tank is a hose. The branch pipe includes the hose. The diameter of the hose is not less than 1 mm and not more than 5 mm.

8. The oral rinser according to claim 1, characterized in that: The one-way conducting element comprises a second pump body arranged on the branch pipe, and the water flosser further comprises: a detection element, disposed in the second liquid storage tank to detect the remaining amount of the second dental flushing solution in the second liquid storage tank, or disposed on the branch tube to detect the flow rate of the second dental flushing solution in the branch tube; The controller is electrically connected to the detection element and the second pump body, and is used to control the second pump body to close when the surplus is lower than the set surplus or the flow rate is lower than the set flow rate.

9. The oral rinser according to claim 1, characterized in that: The anti-backflow pipeline assembly also includes: The second one-way valve is arranged on the main pipe and located upstream of the connection point between the main pipe and the branch pipe, or the second one-way valve is arranged in the first pump body and is configured to be conductive only when the first pump body pumps out the first dental rinse solution.

10. The oral rinser according to claim 1, characterized in that: The side wall of the second liquid storage bin facing the main flow pipe has a first branch pipe joint extending toward the main flow pipe, and the first branch pipe joint is sleeved with the liquid inlet end of the branch pipe.

11. The oral rinser according to claim 1, characterized in that: The bottom of the second liquid storage bin is provided with a first branch pipe joint, the first branch pipe joint is sleeved with the liquid inlet end of the branch pipe, and the branch pipe is entirely located below the second liquid storage bin.

12. The oral rinser according to claim 1, characterized in that: The first pump body comprises: pump housing, and; A pump body, disposed in the pump housing; Wherein, the main flow pipe is a connecting pipe formed by extending from the pump casing, the connecting pipe and the pump casing are an integral component, and a second branch pipe joint is provided on the connecting pipe, and the branch pipe is sleeved with the second branch pipe joint.

13. The oral rinser according to claim 1, characterized in that: The first pump body includes a pump casing, the main flow pipe is detachably connected to the pump casing and the nozzle, and the main flow pipe has a second branch pipe joint, the branch pipe is sleeved with the second branch pipe joint, and the second branch pipe joint is arranged upstream of the nozzle.

14. The oral rinser according to claim 1, characterized in that: The main flow pipe has a second branch flow pipe joint, the second liquid storage tank is spaced apart from the main flow pipe in the width direction of the oral irrigator, and the second branch flow pipe joint extends toward the second liquid storage tank.

15. The oral rinser according to claim 1, characterized in that: The main flow pipe has a second branch flow pipe joint, and a sealing ring is arranged between the branch flow pipe and the second branch flow pipe joint; and / or the branch flow pipe is threadedly connected to the second branch flow pipe joint.

16. The oral rinser according to claim 1, characterized in that: The main flow pipe comprises: A first main flow section is connected to the liquid outlet of the first pump body; and A second main flow section, the two ends of which are connected to the first main flow section and the nozzle, and the second main flow section is equal in length to the first main flow section; Wherein, the main flow pipe has a second branch flow pipe joint, and the second branch flow pipe joint is arranged in the first main flow section.

17. The oral irrigator according to claim 1, characterized in that: The main flow pipe and the branch flow pipe are an integrated component; and / or, the height of the branch flow pipe gradually decreases from the second liquid storage tank to the main flow pipe.

18. The oral rinser according to claim 1, characterized in that: The diameter of the main flow pipe is larger than the diameter of the branch flow pipe; and / or the diameter of the main flow pipe is larger than the diameter of the flow channel in the nozzle.

19. The oral irrigator according to claim 1, characterized in that: The nozzle has a slot, and the water flosser further comprises: A housing having an installation space, wherein at least a portion of the second liquid storage tank and the one-way conductive element are disposed in the installation space; A card connector is disposed in the installation space and is used for card engagement with the card slot; and A button is arranged on the housing and connected to the clamping member, and is used to release the clamping relationship between the clamping member and the clamping slot, so that the nozzle can be detachably connected relative to the housing.

20. The oral rinser according to claim 19, characterized in that: The main flow pipe has a second branch flow pipe joint; Wherein, in the axial direction and / or circumferential direction of the nozzle, the second branch pipe joint and the clamping member are spaced apart.

21. The oral rinser according to any one of claims 1 to 20, characterized in that: The second liquid storage tank has an air inlet, and the air inlet is provided with an air inlet tube and / or a waterproof breathable membrane.

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