Water flosser liquid delivery system

Abstract

The application provides a water pick liquid outlet system, which comprises a mounting shell, a liquid pump device, a plunger slidingly arranged in a liquid pump cavity of the liquid pump device, and a piston reciprocating synchronously with the plunger, wherein the liquid pump cavity has a first pump cavity and a second pump cavity which are spaced apart, a flow distribution device, an inlet liquid flow channel, a redundant flow channel, and an outlet liquid flow channel, wherein the flow distribution device comprises a suction and discharge transition cavity, a first flow guide channel, a second flow guide channel, and a self-rotating liquid path switching mechanism, the inlet liquid flow channel is communicated with the suction and discharge transition cavity, the redundant flow channel is communicated with the suction and discharge transition cavity, and the outlet liquid flow channel is communicated with the first pump cavity; and the liquid path switching mechanism is self-rotated under the flushing action of oral cleaning liquid to periodically and alternately switch a liquid suction communication state and a liquid discharge communication state. The application can obtain a pulse jet flow by using municipal tap water, the frequency of the pulse and the strength of the jet flow can be adjusted, and no electronic circuit is used, so that the oral cleaning effect is improved.

Description

Technical Field

[0001] This invention relates to the field of oral hygiene technology, and in particular to a water flosser dispensing system. Background Technology

[0002] As living standards improve, people are becoming more aware of oral care, and the market offers a wider variety of oral cleaning tools. Among them, water flossers, as an alternative to traditional dental floss, have become an essential household appliance. Their basic working principle involves using a pump to draw in and drain water, which is then sprayed through a nozzle to clean food debris and plaque from between teeth, as well as massage the gums, thus improving the oral environment.

[0003] Currently available oral irrigators that use municipal tap water provide a stable water flow, but their cleaning effect is not as good as pulsed water flow. The pressure is limited to the tap water pressure, often resulting in insufficient cleaning power. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a water flosser system that can use municipal tap water to produce a pulse jet, the frequency of the pulse and the intensity of the jet can be adjusted, it is purely mechanically controlled and has no electronic circuits, thereby improving the oral cleaning effect.

[0005] To solve the above-mentioned technical problems, the present invention provides a water flosser dispensing system, comprising:

[0006] Mounting housing;

[0007] A liquid pump device includes a liquid pump cavity disposed on a mounting housing, a plunger slidably disposed in the liquid pump cavity, and a piston that reciprocates synchronously with the plunger. The liquid pump cavity has a first pump cavity and a second pump cavity spaced apart. One end of the plunger extends into the first pump cavity, and the piston reciprocates in the second pump cavity to divide the second pump cavity into a liquid suction working cavity and a liquid discharge working cavity.

[0008] The distribution device includes a suction and discharge transition cavity formed in the mounting housing, a first guiding flow channel connecting the suction and discharge transition cavity to a first pump chamber and a suction working chamber respectively, a second guiding flow channel connecting the suction and discharge transition cavity to a discharge working chamber, and a rotatable liquid circuit switching mechanism. The first guiding flow channel is provided with a liquid outlet check valve on the diversion structure leading to the first pump chamber. The suction and discharge transition cavity is formed with an inlet distribution cavity and an outlet distribution cavity.

[0009] Liquid inlet channel, which is connected to the liquid inlet distribution chamber;

[0010] Redundant flow channels, which are connected to the liquid distribution chamber;

[0011] The liquid outlet channel is connected to the first pump chamber;

[0012] The liquid path switching mechanism rotates under the driving force of the oral cleaning fluid, periodically switching between the suction connection state and the drainage connection state.

[0013] The liquid suction connection state is as follows: the liquid inlet channel, the liquid inlet distribution chamber and the first guiding channel are connected in sequence, and at the same time, the second guiding channel, the liquid outlet distribution chamber and the redundant channel are connected in sequence, so that the liquid pump device can realize the liquid suction stroke;

[0014] The liquid discharge connection state is as follows: the liquid inlet channel, the liquid inlet distribution chamber, and the second guiding channel are connected in sequence, while the first guiding channel, the liquid outlet distribution chamber, and the redundant channel are connected in sequence, so that the liquid pump device can realize the liquid discharge stroke.

[0015] Preferably, the liquid circuit switching mechanism includes a rotating shaft mounted on the mounting housing, a distribution plate mounted on the rotating shaft and located in the suction / discharge transition cavity, and a drive structure for driving the rotating shaft to rotate on a fixed axis. The distribution plate includes a plate body, on which the liquid inlet distribution cavity and the liquid outlet distribution cavity are provided. The liquid inlet distribution cavity and the liquid outlet distribution cavity are both connected in a direction parallel to the axial direction of the plate body. When the plate body rotates, the liquid inlet distribution cavity is alternately connected to the first regulating flow channel and the second regulating flow channel and is always radially outward connected to the suction / discharge transition cavity. When the plate body rotates, the liquid outlet distribution cavity is alternately connected to the first regulating flow channel and the second regulating flow channel and is always connected to the redundant flow channel.

[0016] Preferably, a gap-sealed fit is formed between the two end faces of the distribution plate and the cavity wall of the suction and discharge transition cavity.

[0017] Preferably, the drive structure includes an impeller disposed on the rotating shaft and a flushing channel for jetting the jet, the flushing channel being formed in the mounting housing and aligned with the impeller.

[0018] Preferably, the impeller is semi-suspended within the redundant flow channel; the redundant flow channel is provided with a baffle plate, which is located on the mounting housing and on the flow-facing side of the impeller. The baffle plate has leakage holes distributed on the outer periphery of the impeller's projection position on the baffle plate.

[0019] Preferably, the diameter of the first pump chamber is smaller than the diameter of the second pump chamber.

[0020] Preferably, the flow distribution device further includes a flow equalization interval ring, which is located inside the suction and discharge transition cavity and is gapped outside the flow distribution plate. The flow equalization interval ring has a plurality of liquid inlet holes arranged in a circular array with the central axis of the flow equalization interval ring as the center axis.

[0021] Preferably, the mounting housing includes a first housing and a second housing that are detachably connected, the first housing being used to mount the liquid pump device and the second housing being used to mount the flow distribution device.

[0022] Preferably, the pump cavity includes a pump body, a plunger guide, and a cylinder that are sequentially and axially liquid-tightly connected, and the plunger guide has a through hole that allows the plunger to pass through in a liquid-tight manner.

[0023] Preferably, the first flow channel includes a main flow section, one end of which is connected to the suction and discharge transition chamber, and the other end of which is split to form a first split flow section and a second split flow section. The first split flow section is connected to the first pump chamber, and the second split flow section is connected to the suction working chamber. The liquid outlet check valve is provided on the first split flow section.

[0024] As described above, the oral irrigator liquid dispensing system of the present invention has the following beneficial effects: the inlet channel is connected to an existing water valve with a preset hydraulic pressure through a hose; the liquid path switching mechanism of the distribution device can use a portion of the oral cleaning liquid in the inlet channel, or it can also be directly connected to the existing water valve; under the flushing of tap water, the liquid path switching mechanism rotates around its own axis, thereby periodically switching between the liquid suction connection state and the liquid discharge connection state. The suction process of the oral irrigator's liquid dispensing system: When the liquid path switching mechanism rotates to the first preset position, tap water flows sequentially through the inlet channel, the suction / discharge transition chamber, and the first adjustment channel. A portion of the tap water in the first adjustment channel flows into the first pump chamber through the outlet check valve, while the remaining tap water in the first adjustment channel flows into the suction working chamber. Thus, the tap water in the first pump chamber and the tap water in the suction working chamber together drive the piston and plunger to move downwards synchronously. Simultaneously, the tap water in the second adjustment channel flows sequentially through the suction / discharge transition chamber and the redundant channel. The tap water in the redundant channel can be recycled or directly discharged. At this point, the pump device completes the suction stroke. The drainage process of the oral irrigator's liquid discharge system: When the liquid circuit switching mechanism rotates to the second preset position, tap water flows sequentially through the inlet channel, the suction / discharge transition chamber, and the second adjustment channel, finally flowing into the drainage working chamber, driving the piston and plunger to move upward synchronously. Simultaneously, since the outlet check valve can only open in one direction, it is currently closed, and the tap water in the first pump chamber is sprayed outward through the outlet channel. The tap water in the suction working chamber flows sequentially through the suction / discharge transition chamber and the redundant channel; the tap water in the redundant channel can be recycled or directly discharged. At this point, the pump device completes the drainage stroke. Manually adjusting the hydraulic pressure of the existing water valve or inlet channel can control the rotation speed of the liquid circuit switching mechanism, thereby controlling the switching frequency between the suction and drainage states, and thus controlling the pulse frequency of the jet. More importantly, manually adjusting the hydraulic pressure of the existing water valve or inlet channel uses a mechanical adjustment structure, eliminating the need for electronic circuit control. Attached Figure Description

[0025] Figure 1 The image shown is a perspective view of the oral irrigator liquid dispensing system of the present invention.

[0026] Figure 2The image shown is a front view of the oral irrigator liquid dispensing system of the present invention.

[0027] Figure 3 Displayed as along Figure 2 A sectional view of line A-A in the middle;

[0028] Figure 4 Displayed as along Figure 2 A sectional view along line B-B in the middle;

[0029] Figure 5 Displayed as along Figure 3 A sectional view of the C-C line in the middle;

[0030] Figure 6 This is a frontal sectional view of the oral irrigator's liquid dispensing system during the suction stroke.

[0031] Figure 7 This is a frontal sectional view of the oral irrigator's liquid dispensing system during the dispensing stroke.

[0032] Figure 8 This is a three-dimensional sectional view of the oral irrigator's liquid dispensing system during the liquid suction stroke.

[0033] Figure 9 This is a three-dimensional sectional view of the oral irrigator's liquid dispensing system during the liquid dispensing stroke.

[0034] Figure 10 The diagram shows a 3D view of the liquid circuit switching mechanism.

[0035] Figure 11 Shown as a perspective view of the second housing and partition;

[0036] Figure 12 The image shown is a cross-sectional view of a liquid pump unit.

[0037] Component designation explanation

[0038] 1. Install housing

[0039] 11 First Shell

[0040] 12 Second shell

[0041] 13. Separators

[0042] 2. Liquid pump unit

[0043] 21. Liquid pump chamber

[0044] 211 First pump chamber

[0045] 212 Second pump chamber

[0046] 212a Liquid suction working chamber

[0047] 212b Drainage and Working Chamber

[0048] 213 Pump body

[0049] 214 Plunger Guide

[0050] 215 cylinder barrel

[0051] 22 plungers

[0052] 23 Pistons

[0053] 3 flow distribution device

[0054] 31 Suction and discharge transition chamber

[0055] 32 First Adjustment Channel

[0056] 321 Mainstream Segment

[0057] 322 First Diversion Section

[0058] 323 Second Diversion Section

[0059] 33 Second Adjustment Channel

[0060] 34. Liquid circuit switching mechanism

[0061] 341 Shaft

[0062] 342 Distribution Panel

[0063] 342a disk body

[0064] 342b liquid inlet distribution chamber

[0065] 342c liquid outlet flow chamber

[0066] 343 Drive Structure

[0067] 343a Impeller

[0068] 343b flushing channel

[0069] 35. Wheel cover

[0070] 351 Leakage Hole

[0071] 36 Flow Equalization Interval Ring

[0072] 361 Liquid Inlet Hole

[0073] 4. Discharge check valve

[0074] 5. Liquid inlet channel

[0075] 6 redundant flow channels

[0076] 7 Nozzles

[0077] 8. Liquid outlet channel Detailed Implementation

[0078] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0079] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0080] This invention provides a water flosser that uses municipal tap water for prolonged oral cleaning and care. Municipal tap water has a certain water pressure and can be continuously supplied. In use, the water flosser can be connected to a household faucet via a flexible hose. When the faucet is turned on, the user activates the water flosser's water outlet, causing a water jet to spray.

[0081] exist Figure 6 , Figure 7 , Figure 8 as well as Figure 9 In the diagram, the small arrows indicate the flow direction of the oral cleaning solution; Figure 6 and Figure 7 In the middle, the large arrow indicates the direction of movement of plunger 22.

[0082] In order for the above-mentioned oral irrigator to spray a pulse jet, such as Figure 1 , Figure 2 as well as Figure 3 As shown, the present invention provides a water flosser dispensing system, comprising:

[0083] Mounting housing 1;

[0084] Liquid pump unit 2 (see details) Figure 12The liquid pump device 2 includes a liquid pump chamber 21 disposed on the mounting housing 1, a plunger 22 slidably disposed on the liquid pump chamber 21, and a piston 23 reciprocating synchronously with the plunger 22. The liquid pump chamber 21 has a first pump chamber 211 and a second pump chamber 212 spaced apart. One end of the plunger 22 extends into the first pump chamber 211, and the piston 23 reciprocates in the second pump chamber 212 to divide the second pump chamber 212 into a liquid suction working chamber 212a and a liquid discharge working chamber 212b.

[0085] The distribution device 3 includes a suction and discharge transition cavity 31 formed in the mounting housing 1, a first guiding flow channel 32 that connects the suction and discharge transition cavity 31 to the first pump chamber 211 and the liquid suction working chamber 212a respectively, a second guiding flow channel 33 that connects the suction and discharge transition cavity 31 to the liquid discharge working chamber 212b, and a rotatable liquid circuit switching mechanism 34. The first guiding flow channel 32 is provided with a liquid outlet check valve 4 on the diversion structure leading to the first pump chamber 211. The suction and discharge transition cavity 31 is internally formed with an inlet distribution cavity 342b and an outlet distribution cavity 342c.

[0086] Liquid inlet channel 5, which is connected to liquid inlet distribution chamber 342b;

[0087] Redundant flow channel 6 is connected to the liquid distribution cavity 342c.

[0088] Liquid outlet channel 8 is connected to the first pump chamber 211;

[0089] like Figure 6 , Figure 7 , Figure 8 ,as well as Figure 9 As shown, the aforementioned liquid path switching mechanism 34 rotates under the driving action of the oral cleaning fluid, periodically alternating between the suction connection state and the discharge connection state.

[0090] The above-mentioned liquid suction connection state is as follows: the liquid inlet channel 5, the liquid inlet distribution chamber 342b and the first guiding channel 32 are connected in sequence, and at the same time, the second guiding channel 33, the liquid outlet distribution chamber 342c and the redundant channel 6 are connected in sequence, so that the liquid pump device 2 can realize the liquid suction stroke.

[0091] The above-mentioned liquid discharge connection state is as follows: the liquid inlet channel 5, the liquid inlet distribution chamber 342b and the second guiding channel 33 are connected in sequence, and at the same time, the first guiding channel 32, the liquid outlet distribution chamber 342c and the redundant channel 6 are connected in sequence, so that the liquid pump device 2 can realize the liquid discharge stroke.

[0092] In this invention, the oral irrigator's liquid dispensing system is essentially a self-driven pulse-type liquid pump that utilizes stable water pressure to generate a pulse jet. Firstly, the innovation of this invention's oral irrigator liquid dispensing system lies in the three-chamber structure of the pump device 2. Specifically, the pump chamber 21 has a first pump chamber 211 and a second pump chamber 212 spaced apart. One end of the plunger 22 extends into the first pump chamber 211, and the piston 23 reciprocates within the second pump chamber 212, dividing it into a suction working chamber 212a and a discharge working chamber 212b. In other words, the first pump chamber 211 temporarily stores the oral cleaning fluid to be sprayed; when the suction working chamber 212a is filled with oral cleaning fluid, it drives the piston 23 downwards, which in turn drives the plunger 22 downwards, thus achieving the suction stroke; when the discharge working chamber 212b is filled with oral cleaning fluid, it drives the piston 23 upwards, which in turn drives the plunger 22 upwards, thus achieving the discharge stroke. Secondly, the innovation of the oral irrigator liquid dispensing system of the present invention lies in the liquid path switching structure of the distribution device 3. That is, the liquid path switching mechanism 34 rotates under the flushing action of the oral cleaning fluid to periodically switch between the suction connection state and the discharge connection state. In the suction connection state, the inlet channel 5, the inlet distribution chamber 342b and the first guiding channel 32 are connected in sequence, while the second guiding channel 33, the discharge distribution chamber 342c and the redundant channel 6 are connected in sequence, so that the liquid pump device 2 can realize the suction stroke. In the discharge connection state, the inlet channel 5, the inlet distribution chamber 342b and the second guiding channel 33 are connected in sequence, while the first guiding channel 32, the discharge distribution chamber 342c and the redundant channel 6 are connected in sequence, so that the liquid pump device 2 can realize the discharge stroke.

[0093] In use, the inlet channel 5 is connected to an existing water valve (e.g., a faucet) with a preset hydraulic pressure via a hose. The liquid path switching mechanism 34 of the distribution device 3 can use a portion of the oral cleaning fluid (i.e., tap water) in the inlet channel 5, or it can be directly connected to the existing water valve. Under the flushing of the tap water, the liquid path switching mechanism 34 rotates around its own axis, thereby periodically switching between the liquid suction connection state and the liquid discharge connection state. The two connection states will not be described in detail (see above).

[0094] The suction process of the oral irrigator's liquid dispensing system (see...) Figure 6 and Figure 8When the liquid circuit switching mechanism 34 rotates to the first preset position, tap water flows sequentially through the inlet channel 5, the inlet distribution chamber 342b, and the first regulating channel 32. A portion of the tap water in the first regulating channel 32 flows into the first pump chamber 211 through the outlet check valve 4, while the remaining tap water in the first regulating channel 32 flows into the suction working chamber 212a. Thus, the tap water in the first pump chamber 211 and the tap water in the suction working chamber 212a together drive the piston 23 and the plunger 22 to move downward synchronously. At the same time, the tap water in the second regulating channel 33 flows sequentially through the outlet distribution chamber 342c and the redundant channel 6. The tap water in the redundant channel 6 can be recycled or directly discharged. Thus, the liquid pump device 2 completes the suction stroke.

[0095] The drainage process of the oral irrigator's liquid outlet system (see...) Figure 7 and Figure 9 When the liquid circuit switching mechanism 34 rotates to the second preset position, tap water flows sequentially through the inlet channel 5, the inlet distribution chamber 342b, and the second regulating channel 33, finally flowing into the discharge working chamber 212b, driving the piston 23 and plunger 22 to move upward synchronously. At the same time, since the outlet check valve 4 can only open in one direction, it is in the closed state at this time, and the tap water in the first pump chamber 211 is sprayed outward through the outlet channel 8. The tap water in the suction working chamber 212a flows sequentially through the outlet distribution chamber 342c and the redundant channel 6. The tap water in the redundant channel 6 can be recycled or directly discharged. At this point, the liquid pump device 2 has completed the discharge stroke.

[0096] Manually adjusting the hydraulic pressure of the existing water valve or inlet channel 5, for example, by manually adjusting the opening, can control the rotational speed of the liquid circuit switching mechanism 34, thereby controlling the switching frequency between the liquid suction connection state and the liquid discharge connection state, and thus controlling the pulse frequency of the jet ejection. More importantly, manually adjusting the hydraulic pressure of the existing water valve or inlet channel 5 adopts a mechanical adjustment structure, eliminating the need for electronic circuit control.

[0097] Therefore, the oral irrigator liquid dispensing system of the present invention can use municipal tap water to obtain a pulse jet, the frequency of the pulse and the intensity of the jet can be adjusted, it is purely mechanically controlled and has no electronic circuits, thereby improving the oral cleaning effect.

[0098] like Figure 10As shown, in order to control the rotation of the liquid circuit switching mechanism 34 using tap water, the liquid circuit switching mechanism 34 includes a rotating shaft 341 mounted on the mounting housing 1, a distribution plate 342 mounted on the rotating shaft 341 and located in the suction / discharge transition chamber 31, and a drive structure 343 that drives the rotating shaft 341 to rotate on a fixed axis. The distribution plate 342 includes a plate body 342a, on which the liquid inlet distribution chamber 342b and the liquid outlet distribution chamber 342c are provided. Both the liquid distribution chamber 342b and the liquid outlet distribution chamber 342c are connected in a direction parallel to the axial direction of the disk body 342a. When the disk body 342a rotates, the liquid inlet distribution chamber 342b is alternately connected to the first guide flow channel 32 and the second guide flow channel 33 and is always radially outward connected to the suction and discharge transition chamber 31. When the disk body 342a rotates, the liquid outlet distribution chamber 342c is alternately connected to the first guide flow channel 32 and the second guide flow channel 33 and is always connected to the redundant flow channel 6.

[0099] Furthermore, such as Figure 5 As shown, the inlet distribution cavity 342b and the outlet distribution cavity 342c are distributed along the diameter of the disc 342a. This arrangement allows the oral irrigator's liquid dispensing system to perform a suction stroke when the disc 342a rotates 180 degrees, and a discharge stroke when the disc 342a rotates another 180 degrees. Both the inlet distribution cavity 342b and the outlet distribution cavity 342c are arc-shaped. Different extension lengths of the inlet distribution cavity 342b correspond to different inlet volumes, and different extension lengths of the outlet distribution cavity 342c correspond to different discharge volumes. The inlet distribution cavity 342b is connected to the suction / discharge transition cavity 31 through multiple radially penetrating holes.

[0100] To ensure smoother rotation of the distribution plate 342, a clearance seal is formed between both end faces of the distribution plate 342 and the cavity wall of the suction / discharge transition chamber 31. Even if there is leakage between the two end faces of the distribution plate 342 and the cavity wall of the suction / discharge transition chamber 31, the amount is small and does not affect performance. For example, drag-reducing sliding plates can be provided between the two end faces of the distribution plate 342 and the cavity wall of the suction / discharge transition chamber 31, or a wear-resistant coating can be applied to the end faces of the distribution plate 342.

[0101] like Figure 4 As shown, in order to control the rotational speed of the impeller 343a independently, the drive structure 343 includes an impeller 343a disposed on the rotating shaft 341 and a flushing channel 343b for jetting the jet. The flushing channel 343b is formed in the mounting housing 1 and aligned with the impeller 343a.

[0102] The aforementioned impeller 343a is semi-suspended within the redundant flow channel 6; as Figure 4 and Figure 6As shown, in order to avoid the tap water in the redundant flow channel 6 from affecting the rotation of the impeller 343a, the redundant flow channel 6 is provided with a shielding plate 35. The shielding plate 35 is located on the mounting housing 1 and on the flow-facing side of the impeller 343a. The shielding plate 35 has a leakage hole 351, which is distributed on the outer periphery of the projection position of the impeller 343a on the shielding plate 35.

[0103] like Figure 12 As shown, in order to pressurize tap water by utilizing the area difference between the piston and plunger, the diameter of the first pump chamber 211 is smaller than the diameter of the second pump chamber 212.

[0104] like Figure 5 As shown, in order to reduce the turbulence formed in the suction and discharge transition chamber 31, the above-mentioned flow distribution device 3 also includes a flow equalization interval ring 36. The flow equalization interval ring 36 is located in the suction and discharge transition chamber 31 and is gapped outside the flow distribution plate 342. The flow equalization interval ring 36 has a plurality of liquid inlet holes 361 arranged in a circular array with the central axis of the flow equalization interval ring 36 as the center axis.

[0105] like Figure 3 and Figure 11 As shown, for ease of assembly and disassembly, the mounting housing 1 includes a first housing 11 and a second housing 12 that are detachably connected. The first housing 11 is used to install the liquid pump device 2, and the second housing 12 is used to install the flow distribution device 3. Furthermore, the second housing 12 is provided with a partition 13 to divide the inner cavity of the second housing 12 into a suction / discharge transition chamber 31 and a redundant flow channel 6.

[0106] like Figure 12 As shown, to form the three-chamber structure of the above-mentioned liquid pump device 2, the liquid pump chamber 21 includes a pump body 213, a plunger guide 214, and a cylinder 215 that are sequentially and axially liquid-tightly connected. The plunger guide 214 has a through hole that allows the plunger 22 to pass through in a liquid-tight manner. The liquid outlet channel 8 can be formed in the pump body 213, and the liquid outlet channel 8 is used to insert the nozzle 7.

[0107] like Figure 6 As shown, in order to guide tap water to the first pump chamber 211 and the liquid suction working chamber 212a respectively, the first guiding flow channel 32 includes a main flow section 321. One end of the main flow section 321 is connected to the suction and discharge transition chamber 31. The other end of the main flow section 321 is divided to form a first diversion section 322 and a second diversion section 323. The first diversion section 322 is connected to the first pump chamber 211, and the second diversion section 323 is connected to the liquid suction working chamber 212a. The liquid outlet one-way valve 4 is provided on the first diversion section 322.

[0108] In summary, this invention utilizes municipal tap water to generate a pulsed jet, the frequency of which and the intensity of which are adjustable. It is purely mechanically controlled, without electronic circuitry, thereby improving oral cleaning effectiveness. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial applicability.

[0109] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An oral irrigator liquid delivery system, comprising: The utility model relates to a liquid pump device and a liquid pump device control method, and the liquid pump device comprises a mounting shell (1), a liquid pump device (2) and a liquid pump device control method. The liquid pump device (2) comprises a liquid pump cavity (21) arranged in the mounting shell (1), a plunger (22) slidingly arranged in the liquid pump cavity (21), and a piston (23) reciprocating synchronously with the plunger (22), the liquid pump cavity (21) has first pump cavities (211) and second pump cavities (212) arranged at intervals, one end of the plunger (22) extends into the first pump cavities (211), and the piston (23) reciprocates in the second pump cavities (212) to divide the second pump cavities (212) into liquid suction working cavities (212a) and liquid discharge working cavities (212b); The liquid pump device (2) further comprises a flow distribution device (3) comprising a suction and discharge transition cavity (31) formed in the mounting shell (1), first flow guide channels (32) respectively connecting the suction and discharge transition cavity (31) to the first pump cavities (211) and the liquid suction working cavities (212a), second flow guide channels (33) connecting the suction and discharge transition cavity (31) to the liquid discharge working cavities (212b), and a rotatable liquid path switching mechanism (34), the first flow guide channels (32) are provided with liquid outlet check valves (4) on the flow distribution structures leading to the first pump cavities (211), and the suction and discharge transition cavity (31) is internally formed with a liquid inlet flow distribution cavity (342b) and a liquid outlet flow distribution cavity (342c); The liquid pump device (2) further comprises a liquid inlet flow channel (5) connected to the liquid inlet flow distribution cavity (342b); The liquid pump device (2) further comprises a redundant flow channel (6) connected to the liquid outlet flow distribution cavity (342c); The liquid pump device (2) further comprises a liquid outlet flow channel (8) connected to the first pump cavities (211); The liquid path switching mechanism (34) rotates under the driving action of the oral cleaning liquid to periodically and alternately switch between a liquid suction communication state and a liquid discharge communication state, wherein The liquid suction communication state is that the liquid inlet flow channel (5), the liquid inlet flow distribution cavity (342b) and the first flow guide channels (32) are sequentially communicated, while the second flow guide channels (33), the liquid outlet flow distribution cavity (342c) and the redundant flow channel (6) are sequentially communicated, so that the liquid pump device (2) realizes a liquid suction stroke; The liquid discharge communication state is that the liquid inlet flow channel (5), the liquid inlet flow distribution cavity (342b) and the second flow guide channels (33) are sequentially communicated, while the first flow guide channels (32), the liquid outlet flow distribution cavity (342c) and the redundant flow channel (6) are sequentially communicated, so that the liquid pump device (2) realizes a liquid discharge stroke. ​ The liquid path switching mechanism (34) comprises a rotating shaft (341) arranged in the mounting shell (1), a distribution disc (342) arranged in the rotating shaft (341) and located in the suction and discharge transition cavity (31), and a driving structure (343) for driving the rotating shaft (341) to rotate. The distribution disc (342) comprises a disc body (342a), and the disc body (342a) is provided with the liquid inlet distribution cavity (342b) and the liquid outlet distribution cavity (342c). The liquid inlet distribution cavity (342b) and the liquid outlet distribution cavity (342c) are both penetrated in a direction parallel to the axial direction of the disc body (342a). The liquid inlet distribution cavity (342b) is alternately connected to the first flow guide channel (32) and the second flow guide channel (33) and is always connected to the suction and discharge transition cavity (31) radially outward when the disc body (342a) rotates. The liquid outlet distribution cavity (342c) is alternately connected to the first flow guide channel (32) and the second flow guide channel (33) and is always connected to the redundant flow channel (6) when the disc body (342a) rotates. The distribution device (3) further comprises a uniform flow spacing ring (36) located in the suction and discharge transition cavity (31) and gap-sheathed outside the distribution disc (342). The uniform flow spacing ring (36) has a plurality of liquid inlet holes (361) arranged in a circumferential array with the center axis of the uniform flow spacing ring (36) as the center axis.

2. The oral irrigator liquid outlet system of claim 1, wherein: The two end surfaces of the distribution disc (342) and the cavity wall of the suction and discharge transition cavity (31) form a gap sealing fit.

3. The oral irrigator liquid outlet system of claim 1, wherein: The driving structure (343) comprises an impeller (343a) arranged in the rotating shaft (341) and a flushing flow channel (343b) for jetting a beam flow. The flushing flow channel (343b) is formed in the mounting shell (1) and is aligned with the impeller (343a).

4. The oral irrigator liquid outlet system of claim 3, wherein: The impeller (343a) is semi-suspended in the redundant flow channel (6). The redundant flow channel (6) is provided with a wheel shielding disc (35) arranged in the mounting shell (1) and located on the upstream side of the impeller (343a). The wheel shielding disc (35) has a liquid leakage hole (351) distributed at the outer periphery of the projection position of the impeller (343a) on the wheel shielding disc (35).

5. The oral irrigator liquid outlet system of claim 1, wherein: The diameter of the first pump cavity (211) is smaller than the diameter of the second pump cavity (212).

6. The oral irrigator liquid outlet system of claim 1, wherein: The mounting shell (1) comprises a first shell (11) and a second shell (12) detachably connected. The first shell (11) is used for mounting the liquid pump device (2), and the second shell (12) is used for mounting the distribution device (3).

7. The oral irrigator liquid outlet system of claim 1, wherein: The liquid pump cavity (21) comprises a pump body (213), a plunger guide (214), and a cylinder (215) which are sequentially and axially liquid-tightly connected. The plunger guide (214) has a through hole allowing the plunger (22) to be liquid-tightly arranged.

8. The oral irrigator liquid outlet system of claim 1, wherein: The first flow channel (32) comprises a main flow section (321), one end of the main flow section (321) is communicated with the suction-exhaust transition cavity (31), the other end of the main flow section (321) is branched to form a first branch flow section (322) and a second branch flow section (323), the first branch flow section (322) is communicated with the first pump cavity (211), and the second branch flow section (323) is communicated with the liquid suction working cavity (212a), and the liquid outlet one-way valve (4) is arranged on the first branch flow section (322).

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