Compact liquid outlet system and oral cavity cleaning method

Abstract

The application provides a compact liquid outlet system and a mouth cleaning method, which comprises a liquid pump device, the liquid pump device comprising a liquid pump cavity, a piston slidingly arranged in the liquid pump cavity, and a piston rod liquid-tightly penetrating the liquid pump cavity and connected to the piston, the piston separating a pump cavity of the liquid pump cavity into a rod cavity and a rod-free cavity, the interior of the piston being integrated with a liquid outlet one-way valve allowing liquid in the rod cavity to flow to the rod-free cavity only; a liquid inlet flow channel, the liquid inlet flow channel being communicated with the rod cavity through a liquid inlet one-way valve; and a liquid outlet flow channel, the liquid outlet flow channel being communicated with the rod-free cavity. The application can save the installation space of the liquid outlet one-way valve, make the overall structure of the compact liquid outlet system more compact, and especially make small products similar to oral irrigators more portable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral cleaning, in particular to a compact liquid outlet system and an oral cleaning method. BACKGROUND

[0002] With the improvement of living standards, people's awareness of oral care is gradually improving, and oral cleaning tools on the market are increasingly diverse. As a substitute for traditional dental floss, the oral irrigator has become one of the household small household appliances. Its basic working principle is to use the pump body to pump water from the water tank, and to spray several hundred times or even thousands of times of high-pressure pulse water flow per minute through the nozzle to clean food residues, dental plaque and massage gums in the tooth gap, and to improve the oral environment.

[0003] The pulse and water pressure of the existing pulse oral irrigator product are the key mechanisms for its cleaning effect. To achieve the cleaning effect, the pulse intensity of the water flow of the oral irrigator needs to be ensured for a longer time.

[0004] The water pump flow of the existing oral irrigator is small before and after the peak flow, the impact force is small, and the water utilization rate is not high. In addition, the existing oral irrigator has a large volume due to the non-compact pump structure design, which is not conducive to carrying and holding. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present application is to provide a compact liquid outlet system and an oral cleaning method, which can save the installation space of the liquid outlet check valve, make the overall structure of the compact liquid outlet system more compact, and especially make the small product similar to the oral irrigator more portable.

[0006] To solve the above technical problems, the present application provides a compact liquid outlet system, comprising:

[0007] A liquid pump device, the liquid pump device comprising a liquid pump cavity, a piston slidingly arranged in the liquid pump cavity, and a piston rod liquid-tightly penetrating the liquid pump cavity and connected to the piston, the piston separating the pump cavity of the liquid pump cavity into a rod cavity and a rod-free cavity, the interior of the piston being integrated with a liquid outlet check valve allowing liquid in the rod cavity to flow only to the rod-free cavity;

[0008] A liquid inlet flow channel, the liquid inlet flow channel being communicated with the rod cavity through a liquid inlet check valve;

[0009] A liquid outlet flow channel, the liquid outlet flow channel being communicated with the rod-free cavity.

[0010] Preferably, the liquid outlet one-way valve comprises a liquid outlet valve cavity formed in the piston and opening towards the rodless cavity, a liquid outlet valve core arranged in the liquid outlet valve cavity, and a liquid outlet valve seat formed in the piston and located on the side of the liquid outlet valve cavity away from the rodless cavity, the liquid outlet valve seat having a liquid overflow hole connecting the liquid outlet valve cavity and the rod cavity, the liquid outlet valve core abutting against the liquid outlet valve seat when the piston is in the liquid discharge stroke and separating from the liquid outlet valve seat when the piston is in the liquid suction stroke.

[0011] Preferably, the compact liquid outlet system further comprises a nozzle connected to the liquid outlet flow channel, the rodless cavity is in a negative pressure state when the piston is in the liquid suction stroke, and the increased volume change amount of the rodless cavity is greater than the decreased volume change amount of the rod cavity.

[0012] Preferably, the compact liquid outlet system further comprises a release system, the release system comprising a release flow channel connected to the rodless cavity and a post-peak release mechanism capable of interrupting the release flow channel, the post-peak release mechanism opening the release flow channel only when the piston is in the liquid discharge stroke and after the liquid pump device appears a flow peak.

[0013] Preferably, the post-peak release mechanism comprises a moving rod penetrating the liquid pump cavity and an elastic reset member driving the moving rod to reset, one end of the moving rod is provided with a release valve core for blocking the release flow channel, and the other end of the moving rod is provided with a top abutting member abutting against the liquid outlet one-way valve or the piston after the liquid pump device appears a flow peak.

[0014] Preferably, the release flow channel comprises a vertical flow channel section extending in parallel to the axial direction of the liquid pump cavity and connected to the rodless cavity, and a transverse flow channel section extending in the radial direction of the liquid pump cavity and connected to the vertical flow channel section; the moving rod gap penetrates the vertical flow channel section, and the top abutting member extends into the rodless cavity or the liquid outlet valve cavity to limit the liquid outlet valve core in the liquid outlet valve cavity.

[0015] Preferably, the liquid pump cavity comprises an inlet adapter and an outlet adapter which are mutually sleeved, the groove structure of the inlet adapter and the groove structure of the outlet adapter jointly define the pump cavity.

[0016] Preferably, the liquid outlet flow channel comprises a nozzle insertion hole and a flow guide channel which are both formed in the liquid pump cavity, and the flow guide channel is connected to the nozzle insertion hole and the rodless cavity, respectively.

[0017] Preferably, the liquid pump cavity is provided with a first sealing ring in liquid-tight sliding cooperation with the piston and a second sealing ring in liquid-tight sliding cooperation with the piston rod, the maximum sealing pressure of the first sealing ring is greater than that of the second sealing ring.

[0018] The application also provides an oral cavity cleaning method using the compact liquid outlet system, comprising the following steps:

[0019] The piston is pulled back by the piston rod to perform the liquid suction stroke. The inlet check valve switches to the closed state, and the outlet check valve switches to the open state. The liquid in the rod chamber flows into the rodless chamber through the outlet check valve. At the same time, the liquid in the nozzle of the compact liquid dispensing system flows back to replenish the rodless chamber.

[0020] The piston is pushed out by the piston rod to perform the discharge stroke. The inlet check valve switches to the open state, and the outlet check valve switches to the closed state. The liquid in the inlet channel flows into the rod chamber through the inlet check valve, and the liquid in the rodless chamber flows into the nozzle through the outlet channel. After the flow rate reaches its peak in the pump device, part of the liquid in the rodless chamber flows back to a liquid storage tank through the release channel.

[0021] As described above, the compact liquid dispensing system and oral cleaning method of the present invention have the following beneficial effects: When the piston is pulled back by the piston rod to perform the suction stroke, the internal pressure of the rod chamber increases and the internal pressure of the rodless chamber decreases. The inlet check valve switches to the closed state, and the outlet check valve switches to the open state. The liquid in the rod chamber can overcome the closing pre-tightening force of the outlet check valve and flow into the rodless chamber. When the piston is pushed out by the piston rod to perform the discharge stroke, the internal pressure of the rod chamber decreases and the internal pressure of the rodless chamber increases. The inlet check valve switches to the open state, and the liquid in the inlet flow channel can overcome the closing pre-tightening force of the inlet check valve and flow into the rod chamber. At the same time, the outlet check valve switches to the closed state, and the liquid in the rodless chamber is squeezed into the outlet flow channel by the piston. The main innovation of the compact liquid dispensing system of this invention lies in the way the one-way valve is integrated into the internal structure of the piston of the liquid pump device. This saves installation space, making the overall structure of the liquid pump device more compact, and consequently, the overall structure of the compact liquid dispensing system more compact. The overall size can be designed to be more refined, making small products like oral irrigators more portable. Therefore, the compact liquid dispensing system of this invention saves installation space for the one-way valve, making the overall structure of the compact liquid dispensing system more compact, and making small products like oral irrigators more portable. Furthermore, the oral cleaning method of this invention can save liquid before and after the flow peak, improving the convenience of oral cleaning. Attached Figure Description

[0022] Figure 1 Shown is a front view of the compact liquid dispensing system of the present invention;

[0023] Figure 2 Displayed as along Figure 1 A cross-sectional view of the compact liquid dispensing system of the AA line during liquid aspiration;

[0024] Figure 3 Displayed as along Figure 2 A cross-sectional view of the compact liquid dispensing system of the BB line during liquid aspiration;

[0025] Figure 4 A compact liquid outlet system shown along Figure 1 A cross-sectional view of the compact liquid outlet system shown in

[0026] Figure 5 An enlarged view of Figure 4 A cross-sectional view of the compact liquid outlet system shown in

[0027] Figure 6 A cross-sectional view of the compact liquid outlet system shown along Figure 2 A cross-sectional view of the compact liquid outlet system shown in

[0028] Figure 7 An enlarged view of Figure 6 A cross-sectional view of the compact liquid outlet system shown in

[0029] Figure 8 An assembly view of the liquid outlet adapter and the nozzle.

[0030] Figure 9 A first perspective view of the liquid outlet adapter.

[0031] Figure 10 A second perspective view of the liquid outlet adapter.

[0032] Figure 11 An exploded view of the post-peak release mechanism, the liquid outlet check valve, the piston, and the piston rod.

[0033] Element Number Description

[0034] 1 liquid pump device

[0035] 11 liquid pump cavity

[0036] 111 liquid inlet adapter

[0037] 112 liquid outlet adapter

[0038] 12 piston

[0039] 13 piston rod

[0040] 14 rod cavity

[0041] 15 rodless cavity

[0042] 16 first seal ring

[0043] 17 second seal ring

[0044] 18 transmission mechanism

[0045] 19 drive mechanism

[0046] 2 liquid outlet check valve

[0047] 21 liquid outlet valve cavity

[0048] 22 outlet valve core

[0049] 23 outlet valve seat

[0050] 231 overflow hole

[0051] 3 inlet flow channel

[0052] 4 inlet check valve

[0053] 5 outlet flow channel

[0054] 51 nozzle insertion hole

[0055] 52 flow guide passage

[0056] 6 nozzle

[0057] 7 release system

[0058] 71 release flow channel

[0059] 711 vertical flow channel segment

[0060] 712 horizontal flow channel segment

[0061] 72 post-peak release mechanism

[0062] 721 moving rod

[0063] 722 elastic return member

[0064] 723 release valve core

[0065] 724 abutting member DETAILED DESCRIPTION

[0066] The present application will be described in greater detail by way of specific embodiments, from which its advantages and effects will be readily apparent to those skilled in the art.

[0067] It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached hereto are merely intended to facilitate the understanding of the content disclosed in the present specification, and are not intended to limit the conditions under which the present application can be implemented, and therefore do not have technical significance. Any modification of the structures, change of the proportional relationship, or adjustment of the size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and "one" used in the present specification are merely intended to facilitate the understanding of the description, and are not intended to limit the scope of the present application, and the change or adjustment of the relative relationship without substantial changes in the technical content should also be considered as the scope of the present application.

[0068] As shown in Figures 1 to 7 The present application provides a compact liquid outlet system, comprising:

[0069] A liquid pump device 1, comprising a liquid pump cavity 11, a piston 12 slidingly arranged in the liquid pump cavity 11, and a piston rod 13 liquid-tightly penetrating the liquid pump cavity 11 and connected to the piston 12, the piston 12 separates the pump cavity of the liquid pump cavity 11 into a rod cavity 14 and a rodless cavity 15, the interior of the piston 12 is integrated with a liquid outlet one-way valve 2 that only allows liquid in the rod cavity 14 to flow to the rodless cavity 15;

[0070] A liquid inlet flow channel 3, which is communicated with the rod cavity 14 through a liquid inlet one-way valve 4;

[0071] A liquid outlet flow channel 5, which is communicated with the rodless cavity 15.

[0072] In the compact liquid outlet system of the present application, referring to Figure 2 and Figure 3 When the piston 12 is pulled back by the piston rod 13 to do the liquid suction stroke, the internal pressure of the rod cavity 14 increases and the internal pressure of the rodless cavity 15 decreases, the liquid inlet one-way valve 4 switches to the closed state, the liquid outlet one-way valve 2 switches to the open state, and the liquid in the rod cavity 14 can flow into the rodless cavity 15 against the closing pre-tightening force of the liquid outlet one-way valve 2.

[0073] Referring to Figure 4 , Figure 5 , Figure 6 and Figure 7 When the piston 12 is pushed out by the piston rod 13 to do the liquid discharge stroke, the internal pressure of the rod cavity 14 decreases and the internal pressure of the rodless cavity 15 increases, the liquid inlet one-way valve 4 switches to the open state, and the liquid in the liquid inlet flow channel 3 can flow into the rod cavity 14 against the closing pre-tightening force of the liquid inlet one-way valve 4; at the same time, the liquid outlet one-way valve 2 switches to the closed state, and the liquid in the rodless cavity 15 is squeezed into the liquid outlet flow channel 5 by the piston 12.

[0074] The main innovation of the compact liquid outlet system of the present application lies in the setting mode of the liquid outlet one-way valve 2, that is, the liquid outlet one-way valve 2 is integrated in the internal structure of the piston 12 of the liquid pump device 1, which can save installation space and make the overall structure of the liquid pump device 1 more compact, so that the overall structure of the compact liquid outlet system is more compact, and the overall size can be designed more delicate, especially for small products such as oral irrigators, which can be more portable. Therefore, the compact liquid outlet system of the present application can save the installation space of the liquid outlet one-way valve 2, make the overall structure of the compact liquid outlet system more compact, and especially make small products such as oral irrigators more portable.

[0075] As shown in Figure 2As shown in the figure, the liquid pump device 1 further comprises a transmission mechanism 18 and a driving mechanism 19, and the piston rod 13 is drivingly connected to the driving mechanism 19 through the transmission mechanism 18. The piston rod 13 reciprocates under the driving of the driving mechanism 19.

[0076] The liquid pump device 1 can be a plunger pump. The transmission mechanism 18 and the driving mechanism 19 are both existing mechanisms. The transmission mechanism 18 can be an eccentric wheel assembly, and the driving mechanism 19 can be a motor assembly, which will not be described here.

[0077] The type of the liquid inlet one-way valve 4 can be a ball valve (with a reset spring) or a valve plate.

[0078] As shown in the figures, Figure 5 and Figure 7 In order to simplify the structure of the liquid outlet one-way valve 2, the liquid outlet one-way valve 2 comprises a liquid outlet valve cavity 21 formed in the piston 12 and opening towards the rodless cavity 15, a liquid outlet valve core 22 arranged in the liquid outlet valve cavity 21 and floating, and a liquid outlet valve seat 23 formed in the piston 12 and located on the side of the liquid outlet valve cavity 21 away from the rodless cavity 15. The liquid outlet valve seat 23 has a liquid overflow hole 231 connecting the liquid outlet valve cavity 21 and the rod cavity 14. The liquid outlet valve core 22 abuts against the liquid outlet valve seat 23 when the piston 12 does the liquid discharge stroke and separates from the liquid outlet valve seat 23 when the piston 12 does the liquid suction stroke.

[0079] When the piston 12 is pulled back to do the liquid suction stroke, the closing principle of the liquid inlet one-way valve 4 is that, as the piston 12 moves downward, the rod cavity 14 becomes smaller, and the internal pressure of the rod cavity 14 increases. Since the opening direction of the liquid inlet one-way valve 4 is from the liquid inlet flow channel 3 to the rod cavity 14, the liquid inlet one-way valve 4 is always in a closed state. The opening principle of the liquid outlet one-way valve 2 is that, as the piston 12 moves downward, the liquid in the rod cavity 14 is pushed towards the liquid overflow hole 231, and the liquid pushes open the liquid outlet valve core 22 of the liquid outlet one-way valve 2. At this time, the liquid in the rod cavity 14 flows into the rodless cavity 15 through the liquid outlet valve cavity 21.

[0080] When the piston 12 does the liquid discharge stroke, as the piston 12 moves upward, the volume of the rod cavity 14 becomes larger, and the internal pressure of the rod cavity 14 decreases. Since the opening direction of the liquid inlet one-way valve 4 is from the liquid inlet flow channel 3 to the rod cavity 14, the liquid in the liquid inlet flow channel 3 pushes open the liquid inlet one-way valve 4 and flows into the rod cavity 14. The closing principle of the liquid outlet one-way valve 2 is that, as the piston 12 squeezes the liquid in the rodless cavity 15, the internal force of the rodless cavity 15 increases, thereby liquid-tightly abutting the liquid outlet valve core 22 of the liquid outlet one-way valve 2 against the liquid outlet valve seat 23 to block the liquid overflow hole 231 of the liquid outlet valve seat 23. The piston 12 squeezes the liquid in the rodless cavity 15, and finally the liquid is sprayed out through the liquid outlet flow channel 5. That is, when the piston 12 does the liquid discharge stroke, the liquid inlet process of the rod cavity 14 and the liquid discharge process of the rodless cavity 15 are carried out at the same time.

[0081] As shown in Figure 2 and Figure 3 , in order to achieve the function of throttling when the piston 12 is pulled back to do the suction stroke, the above-mentioned compact liquid outlet system further comprises a nozzle 6 connected to the liquid outlet flow channel 5, and the above-mentioned rodless cavity 15 is in a negative pressure state when the piston 12 does the suction stroke, and the increased volume change amount of the rodless cavity 15 is greater than the decreased volume change amount of the above-mentioned rod cavity 14. In use, when the piston 12 moves downward, because the rodless cavity 15 is in a negative pressure state, the rodless cavity 15 can generate suction force on the liquid in the nozzle 6, so that the liquid in the nozzle 6 flows back to make up for the difference in volume change amount between the rodless cavity 15 and the rod cavity 14, thereby achieving the effect of saving liquid. When the piston 12 completes the suction stroke, the lumen of the nozzle 6 is almost empty. Subsequently, the piston 12 starts the liquid discharge stroke, and part of the liquid before the flow peak appears will fill the lumen of the nozzle 6, so that part of the liquid with low flow rate will not be sprayed from the nozzle 6, that is, the liquid is sprayed from the nozzle 6 at or close to the time when the flow peak appears. In this way, not only can the liquid temporarily remaining in the nozzle 6 be fully utilized to save liquid and increase the endurance time of oral cavity cleaning, but also the amount of liquid sprayed before the flow peak can be reduced to achieve the purpose of saving liquid before the peak and improve the pulse feeling and effective utilization rate of the liquid when cleaning the user's oral cavity. In addition, the overall structure of the piston 12 and the piston rod 13 is a two-stage stepped shaft structure, and because the piston rod 13 occupies part of the space of the rod cavity 14, the supply amount of the liquid inlet flow channel 3 can be reduced, and the suction capacity of the liquid pump device 1 for the liquid in the nozzle 6 can be improved.

[0082] As shown in Figure 4 , Figure 5 , Figure 6 and Figure 7 , in order to reduce the amount of liquid sprayed after the flow peak, the above-mentioned compact liquid outlet system further comprises a release system 7, which comprises a release flow channel 71 connected to the rodless cavity 15 and a post-peak release mechanism 72 capable of interrupting the release flow channel 71, and the post-peak release mechanism 72 only opens the release flow channel 71 when the piston 12 does the liquid discharge stroke and after the liquid pump device 1 appears the flow peak. In use, when the piston 12 moves upward to the lower half of the liquid discharge stroke and approaches the time when the flow peak appears, the post-peak release mechanism 72 switches the release flow channel 71 to an open state, so that part of the liquid with low flow rate after the flow peak appears is recycled through the release flow channel 71, thereby achieving the purpose of saving liquid after the peak.

[0083] As shown in Figure 5 , Figure 7 and Figure 11As shown, in order to simplify the structure of the post-peak release mechanism 72, the post-peak release mechanism 72 includes a moving rod 721 penetrating the liquid pump cavity 11 and an elastic reset member 722 (for example, a compression spring) driving the moving rod 721 to reset. One end of the moving rod 721 is provided with a release valve core 723 for blocking the release flow channel 71, and the other end of the moving rod 721 is provided with a top abutting member 724 abutting with the outlet one-way valve 2 or the piston 12 after the liquid pump device 1 appears a flow peak. In use, after the liquid pump device 1 appears a flow peak, that is, the piston 12 moves up to the lower half of the liquid discharge stroke, the outlet one-way valve 2 or the piston 12 abuts against the top abutting member 724, and then the top abutting member 724 moves up synchronously. Since the top abutting member 724 and the release valve core 723 are both fixedly arranged on the moving rod 721, the release valve core 723 also moves up synchronously under the driving of the moving rod 721, until the release valve core 723 no longer blocks the release flow channel 71, allowing part of the liquid after the flow peak to flow into the release flow channel 71. When the piston 12 performs a liquid suction stroke, the outlet one-way valve 2 or the piston 12 is separated from the top abutting member 724, and the moving rod 721 returns to the original position under the action of the elastic reset member 722, until the release valve core 723 blocks the release flow channel 71 again. Specifically, part of the structure of the release flow channel 71 is formed in the liquid pump cavity.

[0084] In order to more facilitate the liquid in the rodless cavity 15 to flow into the release flow channel 71, the release flow channel 71 includes a vertical flow channel segment 711 extending to the rodless cavity 15 in the direction parallel to the axial direction of the liquid pump cavity 11, and a horizontal flow channel segment 712 extending to the vertical flow channel segment 711 in the radial direction of the liquid pump cavity 11; the moving rod 721 penetrates the vertical flow channel segment 711, and the top abutting member 724 extends into the rodless cavity 15 or the outlet valve cavity 21 to limit the outlet valve core 22 in the outlet valve cavity 21. Specifically, the vertical flow channel segment 711 and the rodless cavity 15 are coaxially communicated, which is more convenient for the liquid to flow from the rodless cavity 15 into the vertical flow channel segment 711; part of the structure of the elastic reset member 722 is located in the vertical flow channel segment 711, the elastic reset member 722 is sleeved on the moving rod 721, one end of the elastic reset member 722 abuts against the inner wall of the vertical flow channel segment 711 (for example, the inner wall of the stepped hole) and the other end abuts against the top abutting member 724 in the elastic extension direction of the elastic reset member 722, thereby achieving the moving and resetting function of the moving rod 721. In addition, another important innovation point of the post-peak release mechanism 72 is the position design of the top abutting member 724, that is, the top abutting member 724 extends into the rodless cavity 15 or the outlet valve cavity 21, which can always limit the outlet valve core 22 in the outlet valve cavity 21, avoiding the outlet valve core 22 from floating out of the outlet valve cavity 21, thereby ensuring the normal work of the outlet one-way valve 2. There is also a design point here: the outlet valve core 22 is in the shape of a sphere, which is a valve core reset member (for example, a spring);

[0085] When the piston 12 is in the discharge stroke, the fluid resistance loss is small because no valve core reset member is arranged in the discharge valve cavity 21 or in the rodless cavity 15. When the piston 12 is in the suction stroke, the power consumption of the liquid pump device 1 is smaller than that in the discharge stroke; because the liquid in the rod cavity 14 can be forced to be squeezed into the rodless cavity 15, the size of the discharge check valve 2 can be designed to be relatively small, which does not affect the resistance received by the piston 12 in the discharge, and the small design of the discharge check valve 2 also helps to improve the compactness and smallness of the structure size of the liquid pump device 1.

[0086] In addition, after the flow peak occurs, the above-mentioned discharge valve core 22 abuts against the abutting member 724, so that the release valve core 723 no longer blocks the communication between the vertical flow passage section 711 and the horizontal flow passage section 712; more specifically, the release valve core 723 is used to block the vertical flow passage section 711.

[0087] As shown in Figure 7 , in order to facilitate the discharge of liquid, the above-mentioned discharge flow passage 5 includes a plurality of nozzle insertion holes 51 and flow guide passages 52 which are formed in the liquid pump cavity 11, and the flow guide passages 52 are respectively communicated with the nozzle insertion holes 51 and the rodless cavity 15. Specifically, the number of flow guide passages 52 is multiple, and all the flow guide passages 52 are located at the outer periphery of the above-mentioned vertical flow passage section 711, so that more liquid can flow into the vertical flow passage section 711 after the flow peak occurs, and a better throttling function is achieved.

[0088] As shown in Figure 5 and Figure 7 , as an embodiment of the above-mentioned liquid pump cavity 11: the above-mentioned liquid pump cavity 11 includes an inlet adapter 111 and an outlet adapter 112 which are mutually sleeved, and the recess structure of the inlet adapter 111 and the recess structure of the outlet adapter 112 jointly define the above-mentioned pump cavity. Specifically, the inlet adapter 111 is provided with a butt joint structure for mounting the inlet check valve 4; the outlet adapter 112 is provided with a butt joint structure for mounting the nozzle 6. For details, see Figure 8 , Figure 9 and Figure 10 , the outlet adapter 112 is formed with the above-mentioned vertical flow passage section 711, horizontal flow passage section 712, nozzle insertion hole 51 and flow guide passage 52, so that the number of parts can be reduced, and the compactness of the liquid pump device 1 can be improved.

[0089] As shown in Figure 5As shown, in order to improve the liquid tightness of the liquid pump cavity 11 and the piston 12 and the piston rod 13, the liquid pump cavity 11 is provided with a first sealing ring 16 in liquid tight sliding cooperation with the piston 12 and a second sealing ring 17 in liquid tight sliding cooperation with the piston rod 13, the maximum sealing pressure of the first sealing ring 16 is greater than that of the second sealing ring 17. The first sealing ring 16 bears high pressure, but a small amount of leakage does not affect the work, which reduces the sealing requirement of the sealing ring bearing high pressure; the second sealing ring 17 does not allow leakage, but due to its low working pressure, the working condition is improved, and the service life is greatly extended. The oral irrigator of the prior art only has a high-pressure sealing ring of this type, which requires high sealing pressure and does not allow leakage, so compared with the prior art, the technical scheme of the embodiment reduces the performance requirement of the sealing ring, and effectively prolongs the service life of the sealing ring.

[0090] The application also provides an oral cleaning method using the compact liquid outlet system, comprising the following steps:

[0091] The piston 12 is pulled back by the piston rod 13 to do a liquid suction stroke, the liquid inlet one-way valve 4 is switched to the closed state, the liquid outlet one-way valve 2 is switched to the open state, the liquid in the rod cavity 14 flows into the rodless cavity 15 through the liquid outlet one-way valve 2, at the same time, the liquid in the nozzle 6 of the compact liquid outlet system is supplemented back to the rodless cavity 15;

[0092] The piston 12 is pushed out by the piston rod 13 to do a liquid discharge stroke, the liquid inlet one-way valve 4 is switched to the open state, the liquid outlet one-way valve 2 is switched to the closed state, the liquid in the liquid inlet flow channel 3 flows into the rod cavity 14 through the liquid inlet one-way valve 4, the liquid in the rodless cavity 15 flows into the nozzle 6 through the liquid outlet flow channel 5; after the flow peak of the liquid pump device 1 appears, part of the liquid in the rodless cavity 15 flows back to a liquid storage tank through the release flow channel 71.

[0093] In the oral cleaning method of the application, when the piston 12 does a liquid suction stroke, the liquid in the nozzle 6 of the compact liquid outlet system is supplemented back to the rodless cavity 15, which can save liquid before the flow peak appears (for specific reasons, see the above, which will not be repeated here); when the piston 12 does a liquid discharge stroke, part of the liquid in the rodless cavity 15 flows back to a liquid storage tank through the release flow channel 71, which can save liquid after the flow peak appears (for specific reasons, see the above, which will not be repeated here). In addition, since the compact liquid outlet system is very small and compact, the user is very convenient when cleaning the oral cavity. Therefore, the oral cleaning method of the application can save liquid before and after the flow peak, and improve the convenience when cleaning the oral cavity.

[0094] In summary, the compact liquid outlet system of the present application can save the installation space of the liquid outlet check valve, so that the overall structure of the compact liquid outlet system is more compact, especially the small products similar to the oral irrigator are more portable; the oral cleaning method can save liquid before and after the flow peak, and improve the convenience when cleaning the oral cavity. Therefore, the present application effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0095] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A compact liquid dispensing system, characterized in that, include: A liquid pump device (1) includes a liquid pump chamber (11), a piston (12) slidably disposed within the liquid pump chamber (11), and a piston rod (13) liquid-tightly disposed within the liquid pump chamber (11) and connected to the piston (12). The piston (12) divides the pump chamber of the liquid pump chamber (11) into a rod chamber (14) and a rodless chamber (15). The piston (12) has an integrated one-way valve (2) that only allows liquid in the rod chamber (14) to flow to the rodless chamber (15). The one-way valve (2) includes components formed inside the piston (12) and The valve chamber (21) opens toward the rodless chamber (15), the valve core (22) is submerged in the valve chamber (21), and the valve seat (23) is formed inside the piston (12) and located on the side of the valve chamber (21) away from the rodless chamber (15). The valve seat (23) has an overflow hole (231) that connects the valve chamber (21) and the rod chamber (14). The valve core (22) abuts against the valve seat (23) when the piston (12) performs the discharge stroke and separates from the valve seat (23) when the piston (12) performs the suction stroke. The liquid inlet channel (3) is connected to the rod chamber (14) through the liquid inlet check valve (4). The liquid outlet channel (5) is connected to the rodless cavity (15). The compact liquid discharge system also includes a nozzle (6) connected to the liquid discharge channel (5), the rodless chamber (15) is under negative pressure when the piston (12) performs the liquid suction stroke and the increase in volume change of the rodless chamber (15) is greater than the decrease in volume change of the rod chamber (14). The compact liquid discharge system also includes a release system (7), which includes a release channel (71) connected to the rodless chamber (15) and a post-peak release mechanism (72) that can block the release channel (71). The post-peak release mechanism (72) opens the release channel (71) only when the piston (12) is performing a discharge stroke and after the flow rate peak occurs in the liquid pump device (1).

2. The compact liquid dispensing system according to claim 1, characterized in that: The post-peak release mechanism (72) includes a movable rod (721) passing through the liquid pump cavity (11) and an elastic reset member (722) for driving the movable rod (721) to reset. One end of the movable rod (721) is provided with a release valve core (723) for blocking the release flow channel (71), and the other end of the movable rod (721) is provided with a pusher member (724) that abuts against the liquid outlet check valve (2) or piston (12) after the liquid pump device (1) has a flow peak.

3. The compact liquid dispensing system according to claim 2, characterized in that: The release channel (71) includes a vertical channel section (711) extending in a direction parallel to the axial direction of the pump chamber (11) and communicating with the rodless chamber (15), and a transverse channel section (712) extending radially in the pump chamber (11) and communicating with the vertical channel section (711); the moving rod (721) is gapped through the vertical channel section (711), and the top abutment (724) extends into the rodless chamber (15) or the outlet valve chamber (21) to restrict the outlet valve core (22) in the outlet valve chamber (21).

4. The compact liquid dispensing system according to claim 1, characterized in that: The pump chamber (11) includes an inlet adapter (111) and an outlet adapter (112) that are nested together. The groove structure of the inlet adapter (111) and the groove structure of the outlet adapter (112) together define the pump chamber.

5. The compact liquid dispensing system according to claim 1, characterized in that: The liquid outlet channel (5) includes a nozzle insertion hole (51) and a flow guide channel (52) both formed in the liquid pump cavity (11). The flow guide channel (52) is connected to the nozzle insertion hole (51) and the rodless cavity (15) respectively.

6. The compact liquid dispensing system according to claim 1, characterized in that: The pump chamber (11) is provided with a first sealing ring (16) that slides in a liquid-tight manner with the piston (12) and a second sealing ring (17) that slides in a liquid-tight manner with the piston rod (13). The maximum sealing pressure of the first sealing ring (16) is greater than the maximum sealing pressure of the second sealing ring (17).

7. A method for oral cleaning using a compact liquid dispensing system as described in any one of claims 1 to 6, characterized in that, Includes the following steps: The piston (12) is pulled back by the piston rod (13) to perform the liquid suction stroke. The inlet check valve (4) switches to the closed state, and the outlet check valve (2) switches to the open state. The liquid in the rod chamber (14) flows into the rodless chamber (15) through the outlet check valve (2). At the same time, the liquid in the nozzle (6) of the compact liquid discharge system flows back to replenish the rodless chamber (15). The piston (12) is pushed out by the piston rod (13) to perform the discharge stroke. The inlet check valve (4) is switched to the open state, and the outlet check valve (2) is switched to the closed state. The liquid in the inlet channel (3) flows into the rod chamber (14) through the inlet check valve (4), and the liquid in the rodless chamber (15) flows into the nozzle (6) through the outlet channel (5). After the flow rate peak of the liquid pump device (1) occurs, part of the liquid in the rodless chamber (15) flows back to a liquid storage tank through the release channel (71).

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