CN216812121U - Water pump and tooth flushing device - Google Patents
Water pump and tooth flushing device Download PDFInfo
- Publication number
- CN216812121U CN216812121U CN202220354067.5U CN202220354067U CN216812121U CN 216812121 U CN216812121 U CN 216812121U CN 202220354067 U CN202220354067 U CN 202220354067U CN 216812121 U CN216812121 U CN 216812121U
- Authority
- CN
- China
- Prior art keywords
- valve plug
- channel
- knob
- water pump
- plunger cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 238000001802 infusion Methods 0.000 claims description 4
- 235000010585 Ammi visnaga Nutrition 0.000 claims 2
- 244000153158 Ammi visnaga Species 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 230000007423 decrease Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model provides a water pump and a tooth flushing device, wherein the water pump comprises a pump body, a transfusion mechanism and a pressure regulating mechanism, wherein a plunger cavity, a first liquid inlet channel, a liquid outlet channel and a backflow channel are arranged in the pump body; the pressure regulating mechanism comprises a knob, a first valve plug and a first elastic piece, the first valve plug is movably arranged in the backflow channel, and one end, close to the first sealing part, of the first valve plug is provided with a second sealing part; the first elastic piece is used for applying elastic force to the first valve plug so that the first valve plug has the tendency of moving away from the first sealing part; the knob is rotationally connected to the pump body, a first protruding portion is convexly arranged at one end of the knob, the protruding height of the first protruding portion gradually changes along the rotating direction of the knob, and the first protruding portion is in abutting connection with one end, away from the first sealing portion, of the first valve plug. The water pump has low requirements on the processing precision and the assembly precision of the components of the pressure regulating mechanism, is beneficial to reducing the assembly processing difficulty, has high stability and robustness, and is not easy to lose efficacy.
Description
Technical Field
The embodiment of the utility model relates to the technical field of household appliances, in particular to a water pump and a tooth flushing device.
Background
The tooth flushing device is an auxiliary tool for cleaning the oral cavity, and utilizes a pulse water flow impact mode to clean teeth and tooth gaps. If the authorized bulletin number is: CN214805600U patent of the utility model discloses a tooth-rinsing device nozzle assembly and a tooth-rinsing device, the tooth-rinsing device comprises a pump body and a nozzle assembly of the tooth-rinsing device installed on the pump body. The tooth punching device nozzle assembly comprises a nozzle, a first mounting part, a second mounting part and an elastic part. The first mounting piece is connected with a pump body of the tooth punching device, and a mounting hole is formed in the first mounting piece; the second mounting member is movably coupled to the first mounting member. The elastic member connects the first mounting member and the second mounting member. The tooth flushing device is usually provided with a pressure regulating mechanism to regulate water pressure so as to meet diversified use requirements, but the existing pressure regulating mechanism has higher requirements on the processing precision and the assembly precision of cold parts due to the structural limitation, and is easy to fail due to the insufficient processing precision and the assembly precision.
SUMMERY OF THE UTILITY MODEL
In view of the above problems in the prior art, embodiments of the present invention provide a water pump and a tooth washing device.
In order to solve the above problems, the embodiment of the present invention provides a technical solution:
a water pump for use with a dental irrigator, the water pump comprising:
the pump comprises a pump body, wherein a plunger cavity, a first liquid inlet channel, a liquid outlet channel and a backflow channel are arranged in the pump body, the plunger cavity is respectively connected with the first liquid inlet channel and the liquid outlet channel, a one-way valve is arranged between the plunger cavity and the first liquid inlet channel, the backflow channel is respectively connected with the plunger cavity and the first liquid inlet channel, and a first sealing part is arranged on the inner wall of the backflow channel;
the infusion mechanism comprises a driving device and a plunger, the plunger extends into the plunger cavity from one end of the plunger cavity, and the driving device is used for driving the plunger to reciprocate in the plunger cavity so as to suck the flushing liquid from the first liquid inlet channel and extrude the flushing liquid from the liquid outlet channel;
the pressure regulating mechanism comprises a knob, a first valve plug and a first elastic piece, the first valve plug is movably arranged in the backflow channel, and one end, close to the first sealing part, of the first valve plug is provided with a second sealing part; the first elastic piece is used for applying elastic force to the first valve plug so that the first valve plug has the tendency of moving away from the first sealing part; the knob rotationally connect in on the pump body, the protruding first bellying of establishing of one end of knob, the protruding height of first bellying is followed the direction of rotation of knob changes gradually, just first bellying with first valve plug is kept away from the one end looks butt of first sealing. The water pump is easy to assemble, has high stability and robustness, and is not easy to lose efficacy.
In some embodiments, the backflow channel comprises a first chamber connected with the first liquid inlet channel, and a first backflow channel connected between the first chamber and the plunger cavity, and the first backflow channel is provided with the first sealing portion on the inner wall close to the first chamber;
the first valve plug extends into the first return passage from the first chamber, the first elastic piece is arranged in the first return passage and abutted against one end, close to the first sealing portion, of the first valve plug, one end of the knob extends into the first chamber, and the first bulge portion is abutted against one end, far away from the first sealing portion, of the first valve plug. It is beneficial to reducing the assembly and processing difficulty and improving the production efficiency.
In some embodiments, a dial is disposed at one end of the knob, and the first protrusion is protruded on a disc surface of the dial opposite to the first valve plug. As such, an extended space is provided for the arrangement of the first boss by providing the turntable.
In some embodiments, one end of the first chamber is open, and the open end of the first chamber is sealed with an annular cover plate, and the other end of the first chamber is respectively communicated with the first liquid inlet channel and the first return channel;
the knob includes first button body and second button body, first button body includes first shaft-like portion and sets up the knob cap in the one end of first shaft-like portion, the second button body includes second shaft-like portion and sets up in the one end of second shaft-like portion the carousel, the carousel is located in the first cavity, the other end of second shaft-like portion is followed the opening at annular apron middle part stretches out first cavity, the other end of first shaft-like portion with the other end looks joint of second shaft-like portion. In this way, the assembly operation is facilitated.
In some embodiments, the first protrusion is arc-shaped or circular and extends along a first circumference, a circular groove is formed on a cavity wall at the other end of the first chamber along the first circumference, the first backflow channel penetrates through the circular groove, and the first protrusion extends into the circular groove and is configured to be capable of rotating along the circular groove; the circle center of the first circumference is located on the rotation center line of the knob. So, the rotation that knob and pump body can be realized to annular groove and first bellying mutually support and is connected, and the skew rotation center line of restriction knob is easy to assemble moreover.
In some embodiments, the first return channel includes a first section having one end communicating with the plunger cavity, a second section having one end communicating with the first cavity, and a third section connected between the first section and the second section, the third section has an inner diameter that tapers in a direction from the second section to the first section, the first resilient member is disposed in the first section, the first valve plug extends into the second section, and an inner wall of the third section forms the first sealing portion.
In some embodiments, the plunger cavity is further connected to the return passage by a pressure relief valve configured to open and communicate the plunger cavity and the return passage when the hydraulic pressure in the plunger cavity reaches a preset threshold. Thus, the pump body or other parts can be prevented from being damaged due to the overlarge pressure of the liquid in the plunger cavity.
In some embodiments, a second backflow channel extending along the rotation center line of the knob is further arranged in the pump body, one end of the second backflow channel is connected with the first chamber, the other end of the second backflow channel is connected with the plunger cavity, and the inner wall at the other end of the second backflow channel is provided with a third sealing part;
the pressure relief valve comprises a second elastic piece and a second valve plug, the second valve plug extends into the second backflow channel, two ends of the second elastic piece are respectively abutted to the knob and the second valve plug, and the second elastic piece is used for applying elastic force to the second valve plug so that the second valve plug abuts against the third sealing portion. The structure of knob and return channel has been make full use of, has constructed the relief valve, simple structure easily realizes.
In some embodiments, the first valve plug comprises a valve body and an elastic sealing plug, the elastic sealing plug is sleeved on one end of the valve body close to the first sealing portion and forms the second sealing portion. So, when guaranteeing that first bellying can the first valve plug of effectual top removes, still be favorable to improving the leakproofness between first sealing and the second sealing.
A tooth flushing device comprises the water pump.
The water pump provided by the embodiment of the utility model has lower requirements on the processing precision and the assembly precision of the components of the pressure regulating mechanism, is beneficial to reducing the assembly processing difficulty and improving the production efficiency, and the pressure regulating mechanism has higher stability and robustness and is not easy to lose efficacy.
Drawings
FIG. 1 is a cross-sectional view of a state of a water pump according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a cross-sectional view of another state of the water pump of the embodiment of the present invention;
FIG. 4 is an enlarged view of portion B of FIG. 3;
FIG. 5 is a cross-sectional view of a water pump according to an embodiment of the present invention in another state;
fig. 6 is an enlarged view of a portion C of fig. 5.
Description of reference numerals:
100-a pump body; 110-a plunger cavity; 120-a first inlet channel; 130-a second liquid inlet channel; 140-a liquid outlet channel; 151-first return channel; 152-a second return channel; 153-third return channel; 154-a first chamber; 155-first seal; 156-circular ring-shaped groove; 157-an annular cover; 160-one-way valve;
200-a transfusion mechanism; 210-a plunger; 220-a drive device;
300-a pressure regulating mechanism; 310-a knob; 311-a first button body; 312-a second button body; 313-a turntable; 314-a first boss; 315-a rotating shaft; 320-a first valve plug; 321-a valve body; 322-elastic sealing plug; 323-a second seal; 330-a first elastic member;
400-pressure relief valve; 410-a second valve plug; 420-a second elastic member.
Detailed Description
In order to make the technical solutions of the embodiments of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and the detailed description.
Embodiments of the present invention provide a water pump, which can generate a pulse water flow and can be applied to a tooth rinsing device, such as a table-type tooth rinsing device or a hand-held tooth rinsing device. Referring to fig. 1 to 4, a water pump according to an embodiment of the present invention includes a pump body 100, a fluid infusion mechanism 200, and a pressure regulating mechanism 300.
The pump body 100 is internally provided with a plunger cavity 110, a first liquid inlet channel 120, a liquid outlet channel 140 and a backflow channel. One end of the plunger cavity 110 is open for the plunger 210 to extend into. The plunger cavity 110 is respectively connected with the first liquid inlet channel 120 and the liquid outlet channel 140, the first liquid inlet channel 120 is used for supplying flushing liquid to the plunger cavity 110, and the liquid outlet channel 140 is used for ejecting the flushing liquid in the plunger cavity 110. A check valve 160 is disposed between the plunger cavity 110 and the first inlet passage 120 to limit the back flow of the flushing liquid in the plunger cavity 110 to the first inlet passage 120. The return channel is respectively connected with the plunger cavity 110 and the first liquid inlet channel 120, and a first sealing part 155 is arranged on the inner wall of the return channel.
The infusion mechanism 200 comprises a driving device 220 and a plunger 210, the plunger 210 extends into the plunger cavity 110 from one end of the plunger cavity 110, the driving device 220 is used for driving the plunger 210 to reciprocate in the plunger cavity 110 so as to suck the flushing liquid from the first liquid inlet channel 120 and press the flushing liquid out of the liquid outlet channel 140. Alternatively, plunger 210 may extend into plunger cavity 110 from the open end of plunger cavity 110, and drive device 220 may drive plunger 210 to reciprocate along the axial direction of plunger cavity 110. Specifically, when the plunger 210 moves in the direction of being pulled out of the plunger cavity 110, the pressure in the plunger cavity 110 decreases, the flushing liquid in the first liquid inlet channel 120 pushes the check valve 160 open and enters the plunger cavity 110, and when the plunger 210 moves in the direction of being pulled into the plunger cavity 110, the pressure in the plunger cavity 110 increases, and the flushing liquid in the plunger cavity 110 is ejected through the liquid outlet channel 140, so that the pulse water flow is formed.
The pressure regulating mechanism 300 comprises a knob 310, a first valve plug 320 and a first elastic member 330, wherein the first valve plug 320 is movably arranged in the backflow channel, and one end of the first valve plug 320, which is close to the first sealing part 155, is provided with a second sealing part 323; the first resilient member 330 is configured to apply a resilient force to the first valve plug 320 such that the first valve plug 320 has a tendency to move away from the first sealing portion 155; the knob 310 is rotatably connected to the pump body 100, a first protrusion 314 is protruded from one end of the knob 310, the protrusion height of the first protrusion 314 gradually changes along the rotation direction of the knob 310, and the first protrusion 314 abuts against one end of the first valve plug 320 far away from the first sealing portion 155.
It should be noted that the knob 310 can be rotated in both a clockwise direction and a counterclockwise direction to adjust the pressure up or down. The height of the first protrusion 314 gradually increases along the rotation direction of the knob 310, and may be gradually increased in a clockwise direction, or gradually decreased in a counterclockwise direction, or gradually decreased in a clockwise direction, or gradually increased in a counterclockwise direction.
When the pressure of the pulse water flow needs to be adjusted, the knob 310 can be rotated, the first protrusion 314 rotates relative to the first valve plug 320, and the abutting position of the first protrusion 314 and the first valve plug 320 also changes. When the protrusion height of the abutting position of the first protrusion 314 and the first plunger 210 gradually increases, the first protrusion 314 can push the first valve plug 320 to move toward the first sealing portion 155, the gap between the first sealing portion 155 and the second sealing portion 323 gradually decreases, or the first sealing portion 155 and the second sealing portion 323 abut to block the backflow passage, as shown in fig. 3 and 4, the flow rate of the backflow passage gradually decreases, and the backflow ratio of the flushing liquid in the plunger cavity 110 gradually decreases to increase the pressure of the pulse water flow. When the height of the first protrusion 314 is gradually decreased at the position where the first plunger 210 abuts against the first protrusion, the first valve plug 320 is moved away from the first sealing portion 155 by the elastic force exerted by the first elastic member 330, the gap between the first sealing portion 155 and the second sealing portion 323 is gradually increased, as shown in fig. 1 and 2, the flow rate of the back flow path is gradually increased, and the back flow ratio of the flushing liquid in the plunger cavity 110 is gradually increased to decrease the pressure of the pulse water flow.
According to the water pump provided by the embodiment of the utility model, the conduction size of the backflow channel is adjusted or the backflow channel is cut off by the first valve plug 320 arranged in the backflow channel, the first valve plug 320 can move along the length direction of the backflow channel under the limitation of the inner wall of the backflow channel only by generally installing the first valve plug 320 in the backflow channel, the knob 310 and the first valve plug 320 can be stably matched as long as being mutually abutted, and a precise assembly relation is not required between the knob 310 and the first valve plug 320, so that better sealing performance can be formed. Therefore, the water pump has lower requirements on the processing precision and the assembly precision of the components of the pressure regulating mechanism 300, is beneficial to reducing the assembly processing difficulty and improving the production efficiency, and the pressure regulating mechanism 300 has higher stability and robustness and is not easy to lose efficacy.
In some embodiments, the backflow channel includes a first chamber 154 and a first backflow channel 151, the first chamber 154 is connected to the first liquid inlet channel 120, the first backflow channel 151 is connected between the first chamber 154 and the plunger cavity 110, and the first sealing portion 155 is disposed on an inner wall of the first backflow channel 151 close to the first chamber 154. The first valve plug 320 extends into the first flow return channel 151 from the first cavity 154, the first resilient member 330 is disposed in the first flow return channel 151 and abuts an end of the first valve plug 320 adjacent to the first sealing portion 155, an end of the knob 310 extends into the first cavity 154, and the first protrusion 314 abuts an end of the first valve plug 320 remote from the first sealing portion 155. Thus, the first elastic member 330 and the first valve plug 320 can be assembled through the first cavity 154, which is beneficial to reducing the difficulty of assembly and processing and improving the production efficiency.
As shown in fig. 2 and 4, in some embodiments, a dial 313 is disposed at one end of the knob 310, and the first protrusion 314 is protruded from a disc surface of the dial 313 opposite to the first valve plug 320. As such, an extended space is provided for the arrangement of the first boss 314 by the provision of the dial 313.
Optionally, the first protruding portion 314 may be circular or arc-shaped and extend along a first circumference, a circular groove 156 may be formed on a cavity wall at the other end of the first chamber 154 along the first circumference, the first backflow channel 151 may penetrate through the circular groove 156, the first protruding portion 314 may extend into the circular groove 156 and be configured to rotate along the circular groove 156, and a center of the first circumference may be located on a rotation center line of the knob 310. In this manner, the cooperation of the annular recess 156 and the first protrusion 314 enables the rotational connection of the knob 310 to the pump body 100, limits the deviation of the knob 310 from the center line of rotation, and facilitates assembly.
Alternatively, the first chamber 154 may be a generally cylindrical chamber, one end of the first chamber 154 is open, the open end of the first chamber 154 may be covered by an annular cover 157, the other end of the first chamber 154 may be respectively communicated with the first inlet channel 120 and the first return channel 151, and the first return channel 151 may continue in a direction parallel to the rotation center line of the knob 310 and is connected to the plunger cavity 110. The knob 310 may include a first knob body 311 and a second knob body 312, the first knob body 311 may include a first rod portion and a knob cap disposed at one end of the first rod portion, the second knob body 312 may include a second rod portion and a rotating disk 313 disposed at one end of the second rod portion, the rotating disk 313 is located in the first cavity 154, the second rod portion extends out of the first cavity 154 from a middle opening of the annular cover 157, and the first rod portion and the second rod portion are engaged with each other. During assembly, the first elastic member 330 and the first valve plug 320 can be installed in the first backflow channel 151, and then the second knob body 312, the annular cover 157 and the first knob body 311 are assembled in sequence, so as to facilitate the assembly operation.
Optionally, the first liquid inlet channel 120 may extend in a direction perpendicular to a rotation center line of the knob 310, a second liquid inlet channel 130 may be disposed on an extension line of the first liquid inlet channel 120, the plunger cavity 110 may be connected to the first liquid inlet channel 120 along the second liquid inlet channel 130, the check valve 160 may be disposed between the first liquid inlet channel 120 and the second liquid inlet channel 130, the first return channel 151 may be connected to the second liquid inlet channel 130, the first cavity 154 may be connected to the first liquid inlet channel 120 through the third return channel 153, and the third liquid inlet channel may be parallel to the first return channel 151.
In some embodiments, the first return channel 151 includes a first section having one end communicating with the plunger cavity 110, a second section having one end communicating with the first chamber 154, and a third section connected between the first section and the second section, the third section having an inner diameter tapered from the second section to the first section, the first resilient member 330 is disposed in the first section, the first valve plug 320 extends into the second section, and an inner wall of the third section forms the first sealing portion 155. Correspondingly, the first valve plug 320 may have a tapered portion at an end thereof adjacent to the first sealing portion 155, through which the second sealing portion 323 is formed. During assembly, the first elastic member 330 is inserted into the first section from one side of the first chamber 154, and the first valve plug 320 is inserted into the second section, so that the sealing effect is better and the assembly is easy.
Alternatively, one end of the first segment may be connected to the second liquid inlet channel 130, and an annular step portion may be provided at one end of the first segment and may be protruded inward in the radial direction. The first elastic member 330 may be a coil spring, one end of the first elastic member 330 may abut against the annular step portion, and the other end of the first elastic member 330 may abut against the first valve plug 320.
Optionally, the first valve plug 320 may include a valve body 321 and an elastic sealing plug 322, the elastic sealing plug 322 is sleeved on one end of the valve body 321 close to the first sealing portion 155 and forms the second sealing portion 323, one end of the valve body 321 far from the first sealing portion 155 may abut against the first protrusion 314, and the valve body 321 may be made of a rigid material. Thus, while the first protrusion 314 is ensured to effectively push the first valve plug 320 to move, it is beneficial to improve the sealing performance between the first sealing portion 155 and the second sealing portion 323.
In some embodiments, the plunger cavity 110 is further connected to the return channel through a pressure relief valve 400, and the pressure relief valve 400 is configured to open and communicate the plunger cavity 110 and the return channel when the hydraulic pressure in the plunger cavity 110 reaches a preset threshold. In this way, damage to the pump body 100 or other components due to excessive fluid pressure in the plunger cavity 110 can be avoided.
As shown in fig. 5 and 6, in some embodiments, a second backflow channel 152 extending along a rotation center line of the knob 310 is further disposed in the pump body 100, one end of the second backflow channel 152 is connected to the first chamber 154, the other end of the second backflow channel 152 is connected to the plunger cavity 110, and an inner wall at the other end of the second backflow channel 152 is provided with a third sealing portion; the pressure relief valve 400 includes a second elastic member 420 and a second valve plug 410, the second valve plug 410 extends into the second backflow channel 152, two ends of the second elastic member 420 respectively abut against the knob 310 and the second valve plug 410, and the second elastic member 420 is configured to apply an elastic force to the second valve plug 410, so that the second valve plug 410 abuts against the third sealing portion. The structure of knob 310 and return channel has been fully utilized, and relief valve 400 has been built, simple structure, easily realizes.
Alternatively, the other end of the second return channel 152 may communicate with the second liquid inlet channel 130, so that the first return channel 151, the second return channel 152, the third return channel 153 and the first chamber 154 form a flow channel structure with an E-shaped longitudinal section. The middle portion of the rotating plate 313 may be protruded with a rotating shaft 315, the rotating shaft 315 may be inserted into and rotatably connected to the second return channel 152, the second elastic member 420 may also be a bolt spring, two ends of the second elastic member 420 may respectively abut against the second valve plug 410 and a free end of the rotating shaft 315, and the second valve plug 410 may be a ball valve.
The embodiment of the utility model also provides a tooth flushing device which can comprise the water pump. Optionally, the dental irrigator may also include, for example, a water supply, a nozzle, and a power module. The water supply system can be connected with the first liquid inlet channel 120, the nozzle can be connected with the liquid outlet channel 140, and the power supply module can be electrically connected with the driving device 220.
The water pump has lower requirements on the processing precision and the assembling precision of the components of the pressure regulating mechanism 300, is beneficial to reducing the assembly processing difficulty and improving the production efficiency, and the pressure regulating mechanism 300 has higher stability and robustness and is not easy to lose efficacy, so the tooth flusher using the water pump also has the advantages.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents of the utility model may be made by those skilled in the art within the spirit and scope of the utility model, and such modifications and equivalents should also be considered as falling within the scope of the utility model.
Claims (10)
1. A water pump for a water toothpick, the water pump comprising:
the pump body is internally provided with a plunger cavity, a first liquid inlet channel, a liquid outlet channel and a backflow channel, the plunger cavity is respectively connected with the first liquid inlet channel and the liquid outlet channel, a one-way valve is arranged between the plunger cavity and the first liquid inlet channel, the backflow channel is respectively connected with the plunger cavity and the first liquid inlet channel, and the inner wall of the backflow channel is provided with a first sealing part;
the infusion mechanism comprises a driving device and a plunger, the plunger extends into the plunger cavity from one end of the plunger cavity, and the driving device is used for driving the plunger to reciprocate in the plunger cavity so as to suck the flushing liquid from the first liquid inlet channel and extrude the flushing liquid from the liquid outlet channel;
the pressure regulating mechanism comprises a knob, a first valve plug and a first elastic piece, the first valve plug is movably arranged in the backflow channel, and one end, close to the first sealing part, of the first valve plug is provided with a second sealing part; the first elastic piece is used for applying elastic force to the first valve plug so that the first valve plug has the tendency of moving away from the first sealing part; the knob rotationally connect in on the pump body, the protruding first bellying of establishing of one end of knob, the bellying height of first bellying is followed the rotation direction gradual change of knob, just first bellying with first valve plug is kept away from the one end looks butt of first sealing.
2. The water pump of claim 1, wherein the return channel comprises a first chamber connected with the first inlet channel, and a first return channel connected between the first chamber and the plunger cavity, and the first return channel is provided with the first sealing part on the inner wall close to the first chamber;
the first valve plug extends into the first return passage from the first chamber, the first elastic piece is arranged in the first return passage and abutted against one end, close to the first sealing portion, of the first valve plug, one end of the knob extends into the first chamber, and the first bulge portion is abutted against one end, far away from the first sealing portion, of the first valve plug.
3. The water pump of claim 2, wherein a rotary disc is disposed at one end of the knob, and the first protrusion is protruded on a disc surface of the rotary disc opposite to the first valve plug.
4. The water pump according to claim 3, wherein one end of the first chamber is open, an annular cover plate is sealed on the open end of the first chamber, and the other end of the first chamber is respectively communicated with the first liquid inlet channel and the first return channel;
the knob includes first button body and second button body, first button body includes first shaft-like portion and sets up the knob cap in the one end of first shaft-like portion, the second button body includes second shaft-like portion and sets up in the one end of second shaft-like portion the carousel, the carousel is located in the first cavity, the other end of second shaft-like portion is followed the opening at annular apron middle part stretches out first cavity, the other end of first shaft-like portion with the other end looks joint of second shaft-like portion.
5. The water pump according to claim 2, wherein the first protrusion is arc-shaped or circular and extends along a first circumference, a circular groove is formed along the first circumference on a cavity wall at the other end of the first chamber, the first backflow channel penetrates through the circular groove, and the first protrusion extends into the circular groove and is configured to rotate along the circular groove; the circle center of the first circumference is located on the rotation center line of the knob.
6. The water pump of claim 2, wherein the first return passage includes a first section having an end in communication with the plunger cavity, a second section having an end in communication with the first chamber, and a third section connected between the first section and the second section, wherein an inner diameter of the third section tapers from the second section to the first section, the first resilient member is disposed within the first section, the first valve plug extends into the second section, and an inner wall of the third section forms the first seal.
7. The water pump of claim 2, wherein the plunger cavity is further connected to the return passage by a pressure relief valve configured to open and communicate the plunger cavity and the return passage when hydraulic pressure in the plunger cavity reaches a preset threshold.
8. The water pump according to claim 7, wherein a second backflow passage extending along a rotation center line of the knob is further provided in the pump body, one end of the second backflow passage is connected to the first chamber, the other end of the second backflow passage is connected to the plunger cavity, and an inner wall at the other end of the second backflow passage is provided with a third sealing portion;
the pressure relief valve comprises a second elastic piece and a second valve plug, the second valve plug extends into the second backflow channel, two ends of the second elastic piece are respectively abutted to the knob and the second valve plug, and the second elastic piece is used for applying elastic force to the second valve plug so that the second valve plug abuts against the third sealing portion.
9. The water pump of claim 1, wherein the first valve plug comprises a valve body and an elastic sealing plug, the elastic sealing plug is sleeved on one end of the valve body close to the first sealing portion and forms the second sealing portion.
10. A water toothpick comprising a water pump as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220354067.5U CN216812121U (en) | 2022-02-21 | 2022-02-21 | Water pump and tooth flushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220354067.5U CN216812121U (en) | 2022-02-21 | 2022-02-21 | Water pump and tooth flushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216812121U true CN216812121U (en) | 2022-06-24 |
Family
ID=82041078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220354067.5U Active CN216812121U (en) | 2022-02-21 | 2022-02-21 | Water pump and tooth flushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216812121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093463A1 (en) * | 2022-11-04 | 2024-05-10 | 上海飞象健康科技有限公司 | Method for throttling in oral irrigator, throttling system, and method for using same |
-
2022
- 2022-02-21 CN CN202220354067.5U patent/CN216812121U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093463A1 (en) * | 2022-11-04 | 2024-05-10 | 上海飞象健康科技有限公司 | Method for throttling in oral irrigator, throttling system, and method for using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216812121U (en) | Water pump and tooth flushing device | |
| EP1143876B1 (en) | Power toothbrush comprising a fluid-dispensing and refilling system | |
| CN108742910B (en) | Tooth washing device | |
| CN115628211B (en) | Flow regulating structure and corresponding electromagnetic pump | |
| CN109172950B (en) | Syringe with a needle | |
| WO2022042272A1 (en) | Centrifugal water pump | |
| CN212993559U (en) | Sprinkler for agricultural irrigation | |
| CN110236718B (en) | Tooth washing device | |
| CN215349649U (en) | Tooth flushing device core structure and tooth flushing device | |
| CN208492814U (en) | Pulse irrigator and pulse irrigator spray head | |
| CN115778597A (en) | Compact liquid outlet system and oral cleaning method | |
| CN113530800A (en) | Water pumping structure for tooth flushing device | |
| CN215979845U (en) | One-way valve, water pump of tooth flushing device and tooth flushing device | |
| CN115163481A (en) | Piston pump structure of tooth flushing device and tooth flushing device | |
| CN210494292U (en) | Tooth flushing device | |
| CN117177785A (en) | Small patch pump system | |
| CN208943044U (en) | Switching valve and pulse irrigator | |
| CN219126790U (en) | Movement and tooth-flushing device | |
| JP2005188457A (en) | Liquid discharging device | |
| CN219631616U (en) | Soap-giving shower head | |
| CN216124599U (en) | Pump body transmission device for tooth flushing device, liquid conveying device and tooth flushing device | |
| CN221879656U (en) | Peristaltic pump and dental medical instrument | |
| CN219672833U (en) | Piston pump body and tooth washer with same | |
| CN218325254U (en) | Liquid pump device and tooth-washing device | |
| CN217270657U (en) | Water pump of tooth flushing device and tooth flushing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |