Liquid pump and oral irrigator

Abstract

The utility model provides a liquid pump and an oral irrigator, the liquid pump is used for the oral irrigator, the liquid pump comprises a pump body and a plug valve mechanism, the pump body is provided with a first flow channel and a second flow channel, and the first flow channel is communicated with the second flow channel; the plug valve mechanism is arranged on at least one of the first flow channel and the second flow channel, and the plug valve mechanism comprises a plug valve; the plug valve is used for allowing or preventing the liquid medium in the first flow channel from flowing into the second flow channel; wherein a liquid passing groove is formed in the outer side wall of the plug valve, a liquid passing notch is further formed in the plug valve, the liquid passing notch is communicated with the liquid passing groove, the liquid passing groove is communicated with a liquid outlet of the second flow channel, and the first flow channel can be communicated with the liquid passing groove when the plug valve is opened. According to the liquid pump and the oral irrigator, the flow resistance is small when the liquid medium flows through the plug valve, liquid kinetic energy loss caused by unnecessary liquid medium impact can be reduced, and the liquid medium pumping performance of the liquid pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral cleaning equipment, in particular to a liquid pump and a water flosser. Background Art

[0002] The water flosser uses a liquid pump to pressurize the liquid so that the liquid flows from the liquid outlet of the liquid pump to the nozzle of the water flosser, and then is ejected from the nozzle at high speed, directly acting on the user's teeth and interdental spaces, and using the impact force of the high-speed liquid to achieve the purpose of cleaning the oral cavity. The water flosser usually includes a liquid flow channel, and a plug valve is provided in the liquid flow channel to control the unidirectional flow of the liquid. However, the structural design of the water flosser in the related art is not reasonable enough, and the flow resistance of the liquid when flowing through the plug valve is large, resulting in a large loss of kinetic energy of the liquid, which reduces the performance of the liquid pump. Utility Model Content

[0003] The utility model provides a liquid pump and a dental flosser, aiming to improve the performance of the liquid pump.

[0004] The utility model provides a liquid pump, which is used for a water flosser, and comprises:

[0005] A pump body is formed with a first flow channel and a second flow channel, wherein the first flow channel is in communication with the second flow channel;

[0006] a plug valve mechanism, provided in at least one of the first flow channel and the second flow channel, the plug valve mechanism comprising a plug valve; the plug valve is used to allow or prevent the liquid medium in the first flow channel from flowing into the second flow channel;

[0007] Among them, a liquid passage groove is formed on the outer wall of the plug valve, and a liquid passage notch is also formed on the plug valve. The liquid passage notch is connected to the liquid passage groove, and the liquid passage groove is connected to the discharge port of the second flow channel. The first flow channel can be connected to the liquid passage groove when the plug valve is opened.

[0008] In the liquid pump of the embodiment of the utility model, the plug valve comprises:

[0009] A sealing portion, used for allowing or preventing the liquid medium in the first flow channel from entering the second flow channel;

[0010] An extension portion extends from the outer periphery of the sealing portion toward a direction away from the first flow channel, the liquid flow groove is formed in the extension portion, and the extension portion and the sealing portion cooperate to form a hollow cavity connected to the liquid flow gap, and the discharge port of the second flow channel and the hollow cavity are both connected to the liquid flow groove.

[0011] In the liquid pump of the embodiment of the utility model, the extension portion includes:

[0012] A side wall sub-portion extending from the outer periphery of the sealing portion toward a direction away from the first flow channel, and cooperating with the sealing portion to form the hollow cavity, wherein the hollow cavity is communicated with the liquid-passing notch;

[0013] A protrusion is convexly arranged on a side of the side wall sub-portion away from the hollow cavity, and the protrusion cooperates with the side wall sub-portion to form the liquid passage groove.

[0014] In the liquid pump of the embodiment of the utility model, the number of the protrusions includes at least two, and the plurality of protrusions are arranged at intervals along the circumference of the plug valve, and two adjacent protrusions and the side wall sub-portion located between the two adjacent protrusions cooperate to form the liquid flow groove.

[0015] In the liquid pump of an embodiment of the utility model, the plug valve forms a hollow cavity connected to the liquid gap, and the liquid gap is recessed from one end of the cavity wall of the hollow cavity away from the first flow channel to the first flow channel, and the recessed depth of the liquid gap is less than the length of the plug valve.

[0016] In the liquid pump of the embodiment of the utility model, the ratio of the depression depth of the liquid-passing notch to the length of the plug valve is in the range of 1 / 5-4 / 5.

[0017] In the liquid pump of the embodiment of the utility model, the number of the liquid-passing gaps includes multiple, and the multiple liquid-passing gaps are arranged at intervals along the circumference of the plug valve.

[0018] In the liquid pump of the embodiment of the utility model, at least one liquid-passing notch is formed on the bottom wall of each liquid-passing groove.

[0019] In the liquid pump of the embodiment of the utility model, a first guide surface for guiding the plug valve is formed at one end of the plug valve close to the first flow channel; and / or a second guide surface for guiding the plug valve is formed at one end of the plug valve away from the first flow channel.

[0020] In the liquid pump of the embodiment of the utility model, the plug valve mechanism also includes:

[0021] A reset member is connected to the plug valve and is used to allow the plug valve to open or close the first flow channel.

[0022] In the liquid pump of the embodiment of the utility model, the second flow channel includes:

[0023] a first sub-flow channel, wherein the plug valve mechanism is at least partially disposed in the first sub-flow channel;

[0024] The first sub-channel is connected to the chamber through a liquid hole; the volume of the chamber can be adjusted, and the plug valve mechanism can be opened when the volume of the chamber increases to connect the first channel with the first sub-channel; the liquid medium in the chamber can be discharged when the volume of the chamber decreases.

[0025] In the liquid pump of an embodiment of the utility model, the number of the liquid passing holes includes a plurality of liquid passing holes, and the plurality of liquid passing holes include a first liquid passing hole and a second liquid passing hole. The projection of the first liquid passing hole on the cross section of the first sub-channel is located in the middle of the cross section relative to the liquid passing groove, and the projection of the second liquid passing hole on the cross section of the first sub-channel is located outside the cross section relative to the liquid passing groove.

[0026] In the liquid pump of the embodiment of the utility model, the second flow channel includes:

[0027] a chamber capable of communicating with the first flow channel;

[0028] The second sub-channel is connected to the chamber; the volume of the chamber can be adjusted, the liquid medium in the first channel can be sucked into the chamber when the volume of the chamber increases, and the liquid medium in the chamber can be discharged through the second sub-channel when the volume of the chamber decreases, and the plug valve mechanism is provided at the liquid inlet of the second sub-channel or the liquid outlet of the chamber.

[0029] The utility model also provides a water flosser, comprising:

[0030] A liquid pump as described in any one of the above items; and

[0031] The nozzle is communicated with the second flow channel.

[0032] The liquid pump and the oral irrigator provided by the embodiments of the utility model have a liquid groove formed on the plug valve, which is connected to the discharge port of the second flow channel. The first flow channel can be connected to the liquid groove when the plug valve is opened. Therefore, when the plug valve is opened, the liquid medium flowing out of the first flow channel can flow through the liquid groove to the discharge port of the second flow channel. The flow resistance of the liquid medium is small when flowing through the plug valve, which can reduce unnecessary impact of the liquid medium and cause kinetic energy loss of the liquid medium, thereby improving the performance of the liquid pump.

[0033] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory and cannot limit the disclosure of the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is a cross-sectional view of a liquid pump provided by an embodiment of the utility model;

[0036] Figure 2 This is a schematic structural diagram of a plug valve provided by an embodiment of the utility model at one angle;

[0037] Figure 3 This is a schematic structural diagram of a plug valve provided by an embodiment of the utility model from another angle;

[0038] Figure 4 This is a structural schematic diagram of a plug valve provided by an embodiment of the utility model from another angle;

[0039] Figure 5 This is a structural schematic diagram of a plug valve provided by an embodiment of the utility model from another angle;

[0040] Figure 6 It is a partial structural schematic diagram of a pump body provided by an embodiment of the utility model;

[0041] Figure 7 It is a structural schematic diagram of a liquid pump provided by an embodiment of the utility model;

[0042] Figure 8 It is an exploded schematic diagram of a liquid pump provided by an embodiment of the utility model;

[0043] Fig. 9 It is a schematic diagram of the structure of a water flosser provided in one embodiment of the utility model.

[0044] Description of reference numerals:

[0045] 1000. Water flosser;

[0046] 100. Liquid pump;

[0047] 10. Pump body; 11. First flow channel; 12. Second flow channel; 121. First sub-flow channel; 122. Chamber; 123. Liquid passage hole; 1231. First liquid passage hole; 1232. Second liquid passage hole; 124. Second sub-flow channel; 125. Partition; 13. Main body; 131. First flow channel component; 132. Second flow channel component; 133. Third flow channel component; 14. Pressure regulating component;

[0048] 20. plug valve mechanism; 21. plug valve; 211. liquid passage groove; 212. liquid passage notch; 213. sealing portion; 214. extension portion; 2141. side wall sub-portion; 2142. protrusion; 215. hollow cavity; 216. first guide surface; 217. second guide surface; 22. reset member;

[0049] 30. Seals;

[0050] 200. Nozzle. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0052] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0053] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0054] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0055] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0056] See also Figure 1 The present invention provides a liquid pump 100, which is used for a water flosser 1000 (see Figure 8 ), the liquid pump 100 can be used as a power element of the oral irrigator 1000, and the liquid medium stored in the liquid storage tank (such as the liquid storage tank of the oral irrigator 1000) can be sucked out by the liquid pump 100, and the liquid medium is pressurized to be discharged from the nozzle 200 (such as the nozzle 200 of the oral irrigator 1000, such as Figure 8 ) is sprayed out at high speed, thereby cleaning the oral cavity (such as at least one of the teeth, tooth gaps, etc.).

[0057] See also Figure 1 and Figure 2 In some embodiments, the liquid pump 100 includes a pump body 10 and a plug valve mechanism 20. The pump body 10 is formed with a first flow channel 11 and a second flow channel 12, and the first flow channel 11 is connected to the second flow channel 12. The plug valve mechanism 20 is provided in at least one of the first flow channel 11 and the second flow channel 12, and the plug valve mechanism 20 includes a plug valve 21. The plug valve 21 is used to allow or prevent the liquid medium in the first flow channel 11 from flowing into the second flow channel 12. The outer wall of the plug valve 21 is formed with a liquid passage groove 211, and the plug valve 21 is also formed with a liquid passage notch 212. The liquid passage notch 212 is connected to the liquid passage groove 211, and the liquid passage groove 211 is connected to the discharge port of the second flow channel 12. The first flow channel 11 can be connected to the liquid passage groove 211 when the plug valve 21 is opened.

[0058] In the liquid pump 100 of the above-mentioned embodiment, since the plug valve 21 is formed with a liquid groove 211, the liquid groove 211 is connected with the discharge port of the second flow channel 12, and the first flow channel 11 can be connected with the liquid groove 211 when the plug valve 21 is opened. Therefore, when the plug valve 21 is opened, the liquid medium flowing out of the first flow channel 11 can flow through the liquid groove 211 to the discharge port of the second flow channel 12. The flow resistance of the liquid medium is small when flowing through the plug valve 21, which can reduce unnecessary impact of the liquid medium and cause kinetic energy loss of the liquid medium, thereby improving the performance of the liquid pump 100. In addition, the design of the liquid passage groove 211 can ensure that the flow resistance of the liquid medium is small when flowing through the plug valve 21, and the minimum movable gap between the outer wall of the plug valve 21 and the flow channel wall of the flow channel where the plug valve 21 is located can be designed to be small, thereby ensuring that the plug valve 21 can stably and reliably move in the flow channel to realize the opening or closing of the plug valve 21, thereby making the first flow channel 11 and the second flow channel 12 connected or disconnected, ensuring that the plug valve 21 can work reliably, and the structure of the liquid pump 100 is compact. Since the liquid passage groove 211 is connected with the liquid passage notch 212, the liquid medium at the liquid passage groove 211 can enter the hollow cavity 215 or enter the flow channel located downstream of the plug valve 21 through the liquid notch 212, which is conducive to shortening the flow path of the liquid medium, reducing the flow resistance, and improving the performance of the liquid pump 100. In addition, the design of the liquid passage groove 211 and the liquid passage notch 212 can also reduce the mass of the plug valve 21, making the plug valve 21 open or close more quickly and flexibly, and improving the efficiency of opening or closing the plug valve 21.

[0059] Exemplarily, the liquid discharge port of the second flow channel 12 can be connected to the nozzle 200 of the oral irrigator 1000. When the liquid pump 100 is started, the liquid medium in the liquid storage tank of the oral irrigator 1000 can flow through the first flow channel 11 and enter the second flow channel 12 from the first flow channel 11; the liquid medium in the second flow channel 12 can flow out to the nozzle 200 after being pressurized and sprayed out from the nozzle 200 at a high speed, thereby cleaning the oral cavity.

[0060] Exemplarily, the plug valve 21 is used to allow the liquid medium in the first flow channel 11 to flow into the second flow channel 12 in one direction. In other words, the plug valve 21 is used to allow the liquid medium in the first flow channel 11 to flow into the second flow channel 12, and to prevent the liquid medium in the second flow channel 12 from entering the first flow channel 11, so that the liquid medium in the second flow channel 12 can be prevented from flowing back to the first flow channel 11, thereby improving the efficiency of the liquid pump 100 in pumping the liquid medium.

[0061] See also Figure 2 and Figure 3In some embodiments, the plug valve 21 includes a sealing portion 213 and an extension portion 214. The sealing portion 213 is used to allow or prevent the liquid medium in the first flow channel 11 from entering the second flow channel 12; the extension portion 214 extends from the outer periphery of the sealing portion 213 in a direction away from the first flow channel 11, and the liquid passage groove 211 is formed in the extension portion 214. The extension portion 214 cooperates with the sealing portion 213 to form a hollow cavity 215 connected to the liquid passage notch 212. The drain port of the second flow channel 12 and the hollow cavity 215 are both connected to the liquid passage groove 211. The hollow cavity 215 can reduce the mass of the plug valve 21, so that the plug valve 21 can be flexibly opened or closed, and the force applied to the plug valve 21 when opening or closing is reduced. Exemplarily, the liquid passage groove 211 is formed on the outer surface of the extension portion 214.

[0062] See also Figure 3 and Figure 4 In some embodiments, the extension portion 214 includes a side wall sub-portion 2141 and a protrusion 2142. The side wall sub-portion 2141 extends from the outer periphery of the sealing portion 213 toward a direction away from the first flow channel 11. The side wall sub-portion 2141 cooperates with the sealing portion 213 to form a hollow cavity 215, and the hollow cavity 215 is connected to the liquid-passing notch 212. The protrusion 2142 is convexly arranged on a side of the side wall sub-portion 2141 away from the hollow cavity 215. The protrusion 2142 cooperates with the side wall sub-portion 2141 to form a liquid-passing groove 211. The protrusion 2142 can prevent the plug valve 21 from turning over in the flow channel, reduce the gap between the outer wall of the plug valve 21 and the flow channel wall of the flow channel, that is, reduce the circumferential activity margin of the plug valve 21, so that the plug valve 21 can be stably and reliably opened or closed. In addition, the protrusion 2142 can separate the side wall sub-portion 2141 from the flow channel wall of the flow channel, so that the plug valve 21 forms a liquid groove 211. When the plug valve 21 is opened, the liquid medium flowing out of the first flow channel 11 can enter the liquid groove 211 or enter the gap between the plug valve 21 and the flow channel, which is conducive to reducing the flow resistance of the liquid medium when flowing through the plug valve 21, and can reduce unnecessary fluid impacts that cause kinetic energy loss of the liquid medium, thereby improving the performance of the liquid pump 100. In addition, during the activity of the plug valve 21, the protrusion 2142 can also play a guiding role to a certain extent. The protrusion 2142 can also play a role in structural reinforcement, which can improve the strength of the plug valve 21.

[0063] The number of protrusions 2142 can be designed according to actual needs, such as one, two, three or more. The number of liquid flow grooves 211 can be designed according to actual needs, such as one, two, three or more. In some embodiments, the number of protrusions 2142 includes at least two, and multiple protrusions 2142 are arranged at intervals along the circumference of the plug valve 21, and two adjacent protrusions 2142 and the side wall sub-portion 2141 located between the two adjacent protrusions 2142 cooperate to form the liquid flow groove 211. In this way, at least two liquid flow grooves 211 can be formed, which further shortens the flow path of the liquid medium, further reduces the flow resistance, and effectively improves the performance of the liquid pump 100; it can also further reduce the mass of the plug valve 21. Exemplarily, the number of protrusions 2142 is set corresponding to the number of liquid flow grooves 211, for example, the number of protrusions 2142 is the same as the number of liquid flow grooves 211.

[0064] See also Figure 2 and Figure 5 In some embodiments, the plug valve 21 is formed with a hollow cavity 215 connected to the liquid-passing notch 212. The liquid-passing notch 212 is recessed from the end of the plug valve 21 away from the first flow channel 11 to the end close to the first flow channel 11, and the recessed depth m of the liquid-passing notch 212 is less than the length n of the plug valve 21. The recessed depth m of the liquid-passing notch 212 is less than the length n of the plug valve 21, that is, the liquid-passing notch 212 does not penetrate the plug valve 21 along the axial direction or the length direction of the plug valve 21, which can improve the structural stability and reliability of the plug valve 21, and the plug valve 21 is not easily deformed, so that the shape of the plug valve 21 is more stable. Exemplarily, the liquid-passing notch 212 is formed in the cavity wall of the hollow cavity 215, and the liquid-passing notch 212 penetrates the cavity wall of the hollow cavity 215 along the radial direction of the plug valve 21, so that the liquid-passing groove 211 is connected with the hollow cavity 215 through the liquid-passing notch 212. Exemplarily, one end of the hollow cavity 215 close to the sealing portion 213 is closed by the sealing portion 213; one end of the hollow cavity 215 away from the sealing portion 213 is open, so that the hollow cavity 215 is connected to the flow channel located downstream of the plug valve 21 (i.e., downstream in the flow channel direction of the liquid medium), so that the liquid in the hollow cavity 215 can flow to the flow channel located downstream of the plug valve 21. Exemplarily, the plug valve 21 includes at least one of the following: a soft plug valve 21, a flexible plug valve 21, or an elastic plug valve 21, so that when the plug valve 21 is closed, the first flow channel 11 can be reliably disconnected from the second flow channel 12.

[0065] In some embodiments, the ratio of the depression depth m of the liquid gap 212 to the length n of the plug valve 21 is within the range of 1 / 5-4 / 5, for example, the ratio of m to n is 1 / 5, 2 / 5, 4 / 5 or any other suitable value between 1 / 5-4 / 5. If the ratio of m to n is too small, the flow path of the liquid medium will be longer and the flow resistance of the liquid medium will be larger when flowing through the plug valve 21; if the ratio of m to n is too large, the plug valve 21 will be easily deformed and the shape and structure will be unstable. The ratio of m to n is within the range of 1 / 5-4 / 5, which can ensure the shape and structure stability of the plug valve 21 while shortening the flow path of the liquid medium and reducing the flow resistance.

[0066] The shape of the liquid-passing gap 212 can be designed according to actual needs and is not limited here.

[0067] The number of liquid-passing notches 212 can be designed according to actual needs, such as one, two or more. The number of liquid-passing notches 212 can be the same as or different from the number of liquid-passing grooves 211. For example, each liquid-passing groove 211 corresponds to at least one liquid-passing notch 212. For another example, the number of liquid-passing grooves 211 includes at least three, and at least two liquid-passing grooves 211 correspond to the same liquid-passing notch 212.

[0068] In some embodiments, the number of the liquid-passing notches 212 includes multiple, such as two, three or more, and the multiple liquid-passing notches 212 are arranged at intervals along the circumference of the plug valve 21. The number of the liquid-passing notches 212 includes multiple, which can increase the liquid intake, effectively improve the performance of the liquid pump 100, and further reduce the mass of the plug valve 21.

[0069] See also Figure 5 In some embodiments, at least one liquid-passing notch 212 is formed on the bottom wall of each liquid-passing groove 211. In this way, the liquid medium at the liquid-passing groove 211 can flow quickly through the liquid-passing notch 212 and flow to the hollow cavity 215 or the flow channel located downstream of the plug valve 21, which is beneficial to shorten the flow path of the liquid medium, reduce the flow resistance, and improve the performance of the liquid pump 100. Exemplarily, the liquid-passing notch 212 penetrates the bottom wall of the liquid-passing groove 211 along the radial direction of the plug valve 21, so that the liquid-passing groove 211 is connected with the hollow cavity 215 through the liquid-passing notch 212.

[0070] See also Figure 3In some embodiments, a first guide surface 216 for guiding the plug valve 21 is formed at one end of the plug valve 21 close to the first flow channel 11. The first guide surface 216 is used to guide the plug valve 21 when the plug valve 21 moves toward the first flow channel 11 to close the first flow channel 11, so that the movement of the plug valve 21 is more stable, thereby providing a guarantee for the smooth and stable closing of the plug valve 21. Exemplarily, the distance between the end of the first guide surface 216 close to the first flow channel 11 and the central axis a of the plug valve 21 is smaller than the distance between the end of the first guide surface 216 away from the first flow channel 11 and the central axis a of the plug valve 21. Exemplarily, the first guide surface 216 includes a smooth surface or an inclined surface.

[0071] See also Figure 3 In some embodiments, a second guide surface 217 for guiding the plug valve 21 is formed at one end of the plug valve 21 away from the first flow channel 11. The second guide surface 217 is used to guide the plug valve 21 when the plug valve 21 moves away from the first flow channel 11 to open the first flow channel 11, so that the movement of the plug valve 21 is smoother, thereby ensuring the smooth and stable closing of the plug valve 21. Exemplarily, the distance between the end of the second guide surface 217 close to the first flow channel 11 and the central axis a of the plug valve 21 is greater than the distance between the end of the second guide surface 217 away from the first flow channel 11 and the central axis a of the plug valve 21. Exemplarily, the second guide surface 217 includes a smooth surface or an inclined surface.

[0072] See also Figure 1 In some embodiments, the plug valve mechanism 20 further includes a reset member 22, which is connected to the plug valve 21 and is used to allow the plug valve 21 to be opened or closed. When the pressure in the second flow channel 12 is less than the pressure in the first flow channel 11, the plug valve 21 can be pushed by the pressure difference to move in a direction away from the first flow channel 11 and open, and can apply force to the reset member 22; when the pressure in the second flow channel 12 is greater than or equal to the pressure in the first flow channel 11, the reset member 22 can apply a force to the plug valve 21, so that the plug valve 21 is reset and closed. The setting of the reset member 22 allows the plug valve 21 to move more smoothly when opening or closing.

[0073] In some embodiments, the reset member 22 includes an elastic member, one end of the elastic member abuts against the plug valve 21, and the other end of the elastic member abuts against the pump body 10. The elastic member can apply a force toward the first flow channel 11 to the plug valve 21 along the moving direction of the plug valve 21, so that the plug valve 21 is reset to close the plug valve 21, thereby disconnecting the first flow channel 11 from the second flow channel 12. Exemplarily, the elastic member may include a spring or other elastic members.

[0074] See also Figure 1In some embodiments, the second channel 12 includes a first sub-channel 121 and a chamber 122, and the plug valve mechanism 20 is at least partially disposed in the first sub-channel 121; the first sub-channel 121 is connected to the chamber 122 through a liquid hole 123; the volume of the chamber 122 can be adjusted, and the plug valve mechanism 20 can be opened when the volume of the chamber 122 increases, so that the first channel 11 is connected to the first sub-channel 121; the liquid medium in the chamber 122 can be discharged when the volume of the chamber 122 decreases. It can be understood that the reset member 22 and at least part of the plug valve 21 of the plug valve mechanism 20 are disposed in the first sub-channel 121, and the first sub-channel 121 provides an installation space for the plug valve mechanism 20, which can make full use of the space in the second channel 12, reduce the overall volume of the liquid pump 100, and make the structure of the liquid pump 100 more compact. Please refer to Figure 1 and Figure 6 , illustratively, a partition 125 is provided in the pump body 10, and the partition 125 divides the second flow channel 12 into a first sub-flow channel 121 and a flow channel including a chamber 122, and a liquid hole 123 is provided in the partition 125, one end of the reset member 22 extends into the hollow cavity 215 of the plug valve 21 and abuts against the plug valve 21, and the other end of the reset member 22 abuts against the partition 125. The second flow channel 12 can be divided by the partition 125 to form two flow channels, namely, the first sub-flow channel 121 and the flow channel including the chamber 122, and the liquid hole 123 is provided in the partition 125 so that the first sub-flow channel 121 and the chamber 122 can be connected. The internal structure of the pump body 10 is relatively compact, which can make full use of the internal space of the pump body 10, reduce the overall volume of the pump body 10, and is conducive to the miniaturization design of the liquid pump 100.

[0075] See also Figure 1 and Figure 6In some embodiments, the number of the liquid-passing holes 123 includes a plurality of liquid-passing holes 123, and the plurality of liquid-passing holes 123 include a first liquid-passing hole 1231 and a second liquid-passing hole 1232. The projection of the first liquid-passing hole 1231 on the cross section of the first sub-channel 121 is located in the middle of the cross section relative to the liquid-passing groove 211, and the projection of the second liquid-passing hole 1232 on the cross section of the first sub-channel 121 is located outside the cross section relative to the liquid-passing groove 211. With such a configuration, the liquid medium in the first sub-channel 121 can enter the chamber 122 through the first liquid-passing hole 1231 and the second liquid-passing hole 1232, thereby improving the liquid discharge efficiency of the liquid-passing holes 123, so that as much liquid medium as possible can enter the chamber 122 at the same time. In addition, the projection of the first liquid hole 1231 on the cross section of the first sub-channel 121 is located in the middle of the cross section relative to the liquid groove 211, and the projection of the second liquid hole 1232 on the cross section of the first sub-channel 121 is located outside the cross section relative to the liquid groove 211, which can further shorten the flow path of the liquid medium, reduce the flow resistance, and improve the performance of the liquid pump 100. In addition, the projection of the first liquid hole 1231 on the cross section of the first sub-channel 121 is located in the middle of the cross section relative to the liquid groove 211, and the first liquid hole 1231 and the liquid groove 211 can be staggered; the projection of the second liquid hole 1232 on the cross section of the first sub-channel 121 is located outside the cross section relative to the liquid groove 211, and the second liquid hole 1232 and the liquid groove 211 can be staggered, so that the liquid medium flows more evenly when passing through the second channel 12, effectively avoiding large noise caused by turbulence. By way of example, the cross section of the first sub-channel 121 is parallel to the central axis a of the plug valve 21 (see Figure 3 Exemplarily, the cross section of the first sub-channel 121 is perpendicular to the flow direction of the liquid medium in the first sub-channel 121 .

[0076] See also Figure 1In some embodiments, the second flow channel 12 includes a chamber 122 and a second sub-flow channel 124, the chamber 122 can be communicated with the first flow channel 11; the second sub-flow channel 124 is communicated with the chamber 122; the volume of the chamber 122 can be adjusted, the liquid medium in the first flow channel 11 can be sucked into the chamber 122 when the volume of the chamber 122 increases, and the liquid medium in the chamber 122 can be discharged through the second sub-flow channel 124 when the volume of the chamber 122 decreases. A plug valve mechanism 20 is provided at the liquid inlet of the second sub-flow channel 124 or the liquid outlet of the chamber 122. It can be understood that the second sub-channel 124 can be connected to the nozzle 200; when the volume in the chamber 122 decreases, the pressure in the chamber 122 increases; when the pressure in the chamber 122 is greater than or equal to the pressure in the second sub-channel 124, the plug valve mechanism 20 provided at the liquid inlet of the second sub-channel 124 or the liquid outlet of the chamber 122 can move and open under the action of the pressure difference, so that the chamber 122 is connected with the second sub-channel 124, and then the liquid in the chamber 122 is discharged to the nozzle 200 through the second sub-channel 124 and sprayed out from the nozzle 200; when the pressure in the chamber 122 is lower than the pressure in the second sub-channel 124, the plug valve mechanism 20 or the plug valve 21 provided at the connection between the second sub-channel 124 and the chamber 122 can be reset under the action of the reset member 22 of the plug valve mechanism 20, so that the chamber 122 is disconnected from the second sub-channel 124. Exemplarily, a plug valve mechanism 20 is provided at the first flow channel 11 or the first sub-flow channel 121, which is used to allow or prevent the liquid in the first flow channel 11 from flowing into the second flow channel 12; another plug valve mechanism 20 is provided at the connection between the chamber 122 and the second sub-flow channel 124, which is used to allow or prevent the liquid in the chamber 122 from flowing into the second sub-flow channel 124. In other embodiments, a plug valve mechanism 20 is provided at the first flow channel 11 or the first sub-flow channel 121; a valve structure other than the plug valve mechanism 20 is provided at the connection between the chamber 122 and the second sub-flow channel 124, which is used to allow or prevent the liquid in the chamber 122 from flowing into the second sub-flow channel 124.

[0077] See also Figure 1 , Figure 7 and Figure 8 In some embodiments, the pump body 10 includes a main body 13 and a pressure regulating member 14, the first flow channel 11 and the second sub-flow channel 124 are provided in the main body 13; the pressure regulating member 14 cooperates with the main body 13 to form a chamber 122, and the pressure regulating member 14 can adjust the volume of the chamber 122 to adjust the pressure in the chamber 122. Exemplarily, the first flow channel 11, the first sub-flow channel 121 and the second sub-flow channel 124 are provided in the main body 13.

[0078] In some embodiments, the liquid pump 100 further includes a driving mechanism (not shown), which is in transmission connection with the pressure regulating member 14 and is used to drive at least part of the pressure regulating member 14 to move or deform, so as to adjust the volume in the chamber 122, and further adjust the pressure in the chamber 122. The driving mechanism is used to provide a driving force for movement or a deformation force for at least part of the pressure regulating member 14. Exemplarily, the driving mechanism includes a driving motor.

[0079] Exemplarily, the pressure regulating member 14 may include a piston, which is slidably disposed in the chamber 122 of the second flow channel 12, and the piston is connected to a driving mechanism, which is used to drive the piston to slide so as to adjust the volume in the chamber 122, and further adjust the pressure in the chamber 122. The driving mechanism drives the piston, and when the piston slides relative to the chamber 122 in a direction close to the driving mechanism, the volume in the chamber 122 increases, and the pressure in the chamber 122 decreases. At this time, the liquid medium can be sucked into the chamber 122 from the first flow channel 11 to replenish the liquid medium; when the piston slides relative to the chamber 122 in a direction away from the driving mechanism, the volume in the chamber 122 decreases, and the pressure in the chamber 122 increases, and the liquid in the chamber 122 is pressurized and pumped to the second sub-flow channel 124 of the second flow channel 12.

[0080] Exemplarily, the pressure regulating member 14 may also include a diaphragm, which is connected to the main body 13, and is disposed in the chamber 122 of the second flow channel 12. The diaphragm is connected to a driving mechanism (not shown), and the driving mechanism is used to drive the diaphragm to undergo elastic deformation to adjust the volume in the chamber 122, and further adjust the pressure in the chamber 122. The diaphragm is elastically deformed by the driving mechanism. When the diaphragm undergoes elastic deformation in a direction close to the driving mechanism, the volume in the chamber 122 increases, and the pressure in the chamber 122 decreases. At this time, the liquid medium can be sucked into the chamber 122 from the first flow channel 11 to replenish the liquid medium; when the diaphragm undergoes elastic deformation in a direction away from the driving mechanism, the volume in the chamber 122 decreases, and the pressure in the chamber 122 increases. The liquid in the chamber 122 is pressurized and pumped to the second sub-flow channel 124 of the second flow channel 12. Furthermore, a diaphragm is adopted, which is fixed relative to the main body 13 and adjusts the pressure in the chamber 122 by elastic deformation thereof, and the sealing property of the connection between the diaphragm and the chamber 122 is better.

[0081] See also Figure 8 , combined with Figure 1In some embodiments, the main body 13 includes a first flow channel member 131, a second flow channel member 132 and a third flow channel member 133. The first flow channel member 131, the second flow channel member 132 and the third flow channel member 133 are separately arranged. The first flow channel member 131 is connected to the second flow channel member 132. The first flow channel member 131 forms a first flow channel 11 and at least a portion of the first sub-flow channel 121. The second flow channel member 132 is connected to the pressure regulating member 14 and cooperates to form a chamber 122. The liquid hole 123 is arranged in the second flow channel member 132. The second flow channel member 132 is connected to the third flow channel member 133. The third flow channel member 133 forms a second sub-flow channel 124. Please refer to Figure 1 and Figure 8 , exemplarily, the liquid pump 100 further includes a sealing member 30, which is arranged at the connection between the first flow channel member 131 and the second flow channel member 132 to improve the sealing performance of the first flow channel member 131 and the second flow channel member 132, which is beneficial to reduce the working power of the driving mechanism when the liquid pump 100 has the same liquid medium pumping performance; it can also prevent the liquid medium from leaking out of the pump body 10 from the connection between the first flow channel member 131 and the second flow channel member 132. Exemplarily, the sealing member 30 includes a sealing ring. In other embodiments, the pump body 10 can also be any other suitable structure, such as the third flow channel member 133 of the main body 13 can also be omitted, the main body 13 is connected to the nozzle 200, and a valve structure is provided at the connection between the main body 13 and the nozzle 200, and the valve structure is used to allow or prevent the liquid medium in the chamber 122 from flowing into the nozzle 200.

[0082] See also Fig. 9 The embodiment of the present application further provides a water flosser 1000 , comprising a liquid pump 100 and a nozzle 200 , wherein the liquid pump 100 comprises the liquid pump 100 of any one of the above-mentioned embodiments; the nozzle 200 is connected to the second flow channel 12 .

[0083] For example, the nozzle 200 can be installed on the pump body 10 in a detachable manner (such as a snap connection or a threaded connection, etc.), and the nozzle 200 is connected to the second flow channel 12; when the liquid pump 100 is started to pump out the liquid medium, the liquid medium pumped out from the second flow channel 12 can be ejected at a high speed by the nozzle 200, thereby achieving the effect of cleaning the oral cavity. In other embodiments, the nozzle 200 can also be non-detachably connected to the pump body 10.

[0084] In some embodiments, the first flow channel 11 is connected to a liquid storage tank, and the liquid storage tank is used to store liquid medium. When the liquid pump 100 is started to perform the suction of liquid medium, the fluid medium in the liquid storage tank can enter the first flow channel 11 under the action of pressure, and flow through the second flow channel 12 to be sprayed out from the nozzle 200. Exemplarily, the liquid storage tank can be a part of the water flosser 1000, and the liquid storage tank can be arranged on the liquid pump 100, such as on the pump body 10; the liquid storage tank can also be separated from the pump body 10 and connected to the first flow channel 11 of the pump body 10 through a liquid delivery pipeline. Exemplarily, the liquid storage tank may not be a part of the water flosser 1000, but is a device used to provide liquid medium to the water flosser 1000 when the water flosser 1000 is in use.

[0085] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "mechanically coupled" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. The mechanical coupling or coupling of two components includes direct coupling and indirect coupling, for example, direct fixed connection, connection through a transmission mechanism, etc. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0086] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0087] The disclosure above provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific method steps, features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific method steps, features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A liquid pump, characterized in that: The liquid pump is used for a water flosser, and the liquid pump comprises: A pump body is formed with a first flow channel and a second flow channel, wherein the first flow channel is in communication with the second flow channel; a plug valve mechanism, provided in at least one of the first flow channel and the second flow channel, the plug valve mechanism comprising a plug valve; the plug valve is used to allow or prevent the liquid medium in the first flow channel from flowing into the second flow channel; Among them, a liquid passage groove is formed on the outer wall of the plug valve, and a liquid passage notch is also formed on the plug valve. The liquid passage notch is connected to the liquid passage groove, and the liquid passage groove is connected to the discharge port of the second flow channel. The first flow channel can be connected to the liquid passage groove when the plug valve is opened.

2. The liquid pump according to claim 1, characterized in that: The plug valve comprises: A sealing portion, used for allowing or preventing the liquid medium in the first flow channel from entering the second flow channel; An extension portion extends from the outer periphery of the sealing portion toward a direction away from the first flow channel, the liquid flow groove is formed in the extension portion, and the extension portion and the sealing portion cooperate to form a hollow cavity connected to the liquid flow gap, and the discharge port of the second flow channel and the hollow cavity are both connected to the liquid flow groove.

3. The liquid pump according to claim 2, characterized in that: The extension portion comprises: A side wall sub-portion extending from the outer periphery of the sealing portion toward a direction away from the first flow channel, and cooperating with the sealing portion to form the hollow cavity, wherein the hollow cavity is communicated with the liquid-passing notch; A protrusion is convexly arranged on a side of the side wall sub-portion away from the hollow cavity, and the protrusion cooperates with the side wall sub-portion to form the liquid passage groove.

4. The liquid pump according to claim 3, characterized in that: The number of the protrusions includes at least two, and the plurality of protrusions are arranged at intervals along the circumference of the plug valve. Two adjacent protrusions and the side wall sub-portion located between the two adjacent protrusions cooperate to form the liquid passage groove.

5. The liquid pump according to claim 1, characterized in that: The plug valve is formed with a hollow cavity connected to the liquid-passing notch, and the liquid-passing notch is recessed from an end of the plug valve away from the first flow channel to a direction close to the first flow channel, and a recessed depth of the liquid-passing notch is less than a length of the plug valve.

6. The liquid pump according to claim 5, characterized in that: The ratio of the depression depth of the liquid-passing notch to the length of the plug valve is in the range of 1 / 5-4 / 5.

7. The liquid pump according to claim 1, characterized in that: The number of the liquid-passing notches includes a plurality, and the plurality of liquid-passing notches are arranged at intervals along the circumference of the plug valve.

8. The liquid pump according to claim 1, characterized in that: The bottom wall of each of the liquid-passing grooves is formed with at least one liquid-passing notch.

9. The liquid pump according to claim 1, characterized in that: A first guide surface for guiding the plug valve is formed at one end of the plug valve close to the first flow channel; and / or a second guide surface for guiding the plug valve is formed at one end of the plug valve away from the first flow channel.

10. The liquid pump according to any one of claims 1 to 9, characterized in that: The plug valve mechanism also includes: A reset member is connected to the plug valve and is used to allow the plug valve to open or close the first flow channel.

11. The liquid pump according to any one of claims 1 to 9, characterized in that: The second flow channel comprises: a first sub-flow channel, wherein the plug valve mechanism is at least partially disposed in the first sub-flow channel; The first sub-channel is connected to the chamber through a liquid hole; the volume of the chamber can be adjusted, and the plug valve mechanism can be opened when the volume of the chamber increases to connect the first channel with the first sub-channel; the liquid medium in the chamber can be discharged when the volume of the chamber decreases.

12. The liquid pump according to claim 11, characterized in that: The number of the liquid-passing holes includes a plurality of liquid-passing holes, and the plurality of liquid-passing holes includes a first liquid-passing hole and a second liquid-passing hole. The projection of the first liquid-passing hole on the cross section of the first sub-channel is located in the middle of the cross section relative to the liquid-passing groove, and the projection of the second liquid-passing hole on the cross section of the first sub-channel is located outside the cross section relative to the liquid-passing groove.

13. The liquid pump according to any one of claims 1 to 9, characterized in that: The second flow channel comprises: a chamber capable of communicating with the first flow channel; The second sub-channel is connected to the chamber; the volume of the chamber can be adjusted, the liquid medium in the first channel can be sucked into the chamber when the volume of the chamber increases, and the liquid medium in the chamber can be discharged through the second sub-channel when the volume of the chamber decreases, and the plug valve mechanism is provided at the liquid inlet of the second sub-channel or the liquid outlet of the chamber.

14. A dental flosser, characterized in that: include: The liquid pump according to any one of claims 1 to 13; as well as The nozzle is communicated with the second flow channel.

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