CN216124597U

CN216124597U - Portable tooth washing device

Info

Publication number: CN216124597U
Application number: CN202021250837.9U
Authority: CN
Inventors: 陈剑锋
Original assignee: Changsha Anzhimei Technology Co ltd
Current assignee: Changsha Anzhimei Technology Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2022-03-25
Anticipated expiration: 2030-06-30

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a portable tooth washing device which comprises a machine body, a pump assembly, a liquid storage assembly and a nozzle assembly, wherein the pump assembly and the liquid storage assembly are arranged in the machine body, a top cover is arranged at the top of the machine body, the top cover is provided with a water inlet communicated with the liquid storage assembly and a water outlet communicated with the pump assembly, the bottom of the nozzle assembly is detachably connected to a water outlet of the top cover and is communicated with an output port of the pump assembly, the nozzle assembly can extend into the water inlet and is accommodated in the machine body after being detached, the top cover is provided with a sealing plug used for sealing the water inlet and the water outlet, and the sealing plug is movably connected with the water inlet and the water outlet. The nozzle assembly of the utility model can be disassembled and stored in the machine body, thereby preventing dust and bacteria and improving the portability of the utility model.

Description

Portable tooth washing device

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a portable tooth washing device.

Background

The tooth washing device is generally used for nursing oral cavity, mainly comprises a main machine, a water tank, a nozzle and the like, wherein a power pump and a water flow channel formed by a water inlet flow channel and a water outlet flow channel are arranged in the main machine; the power pump is communicated with the water outlet flow passage, and the water outlet flow passage conveys the pressurized water to the nozzle, so that the nozzle can spray high-pressure water flow for flushing teeth.

The nozzle of the hand-held tooth cleaner in the prior art is generally fixed on the machine body, on one hand, the hand-held tooth cleaner is easily infected by dust and bacteria after being exposed outside for a long time, and on the other hand, the length of the tooth cleaner is directly increased conveniently, so that the hand-held tooth cleaner is inconvenient to carry.

In view of the above, it is desirable to provide a portable tooth washing device with dust and bacteria prevention.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a portable tooth washing device capable of preventing dust and bacteria.

The above purpose is realized by the following technical scheme: the utility model provides a portable tooth cleaner, includes fuselage, pump assembly, stock solution subassembly and nozzle assembly, pump assembly and stock solution subassembly set up in the fuselage, the top of fuselage is equipped with the top cap, the top cap be equipped with the water inlet that the stock solution subassembly is linked together and with the delivery port that the pump assembly is linked together, detachable the connection in nozzle assembly bottom the delivery port department of top cap and with the delivery outlet of pump assembly is linked together, but after nozzle assembly dismantles, stretch into the water inlet is accomodate extremely in the fuselage, the top cap is equipped with and is used for the shutoff the sealing plug of water inlet and delivery port, the sealing plug with water inlet and delivery port swing joint.

The liquid storage assembly is used for storing cleaning liquid, the pump assembly provides power to spray the cleaning liquid out of the nozzle assembly to clean teeth, the sealing plug plays a role in dust prevention and water sealing, the sealing plug is designed into an integral body, and the sealing plug can rotate and deviate by 360 degrees from a connection point of the sealing plug and a water outlet or a connection point of a water inlet. When the tooth washing device is used, the sealing plug is pulled out from the water outlet of the top cover, the sealing plug is rotated and deviated by a preset angle at the connection point of the sealing plug and the water outlet, the bottom of the nozzle assembly is fixed at the water outlet of the top cover and is communicated with the pump assembly, the nozzle assembly sprays liquid to perform cleaning work after the pump assembly works, the nozzle assembly is disassembled when the tooth washing device is not used, the sealing plug plugs the water inlet of the top cover and is pulled out of the water inlet, the nozzle assembly is inversely inserted into the water inlet, the storage function of the nozzle assembly is realized, then the water inlet is sealed by the sealing plug, the waterproof function is achieved, and the portability of the tooth washing device is improved.

The sealing plug comprises a cover plate, a first plug nozzle and a second plug nozzle are arranged on a bottom plate of the cover plate, and the first plug nozzle and the second plug nozzle are respectively used for plugging and sealing a water inlet and a water outlet in the top cover.

A further technical scheme is, the stock solution subassembly includes the liquid reserve tank and sets up the supporting seat on liquid reserve tank upper portion, the pump subassembly is fixed on the supporting seat, the supporting seat is equipped with and holds the chamber, hold the chamber extremely the liquid reserve tank top extends to the delivery port of top cap, the open-top of liquid reserve tank, hold the chamber intercommunication the liquid reserve tank with the delivery port of top cap, nozzle assembly can accomodate extremely hold the intracavity. So set up, the chamber that holds of supporting seat plays the effect of inlet channel on the one hand, and another is convenient as nozzle assembly's collecting chamber, structural design is reasonable.

The further technical scheme is that an ultraviolet germicidal lamp is arranged in the accommodating cavity. So set up, the ultraviolet germicidal lamp that holds the intracavity can be to accomodating the water spray subassembly that holds the intracavity disinfection of disinfecting.

The technical scheme is that the top cover comprises an upper cover and a sealing cover, the upper cover is provided with a connecting interface, the upper cover is fixed on the machine body through the connecting interface and a fastening piece, the sealing cover is clamped on the upper cover, a water inlet and a water outlet of the top cover penetrate through the upper cover and the sealing cover, and the sealing plug is used for plugging the water inlet and the water outlet of the sealing cover. So set up, the upper cover is used for being connected and playing the effect of shutoff fuselage with the fuselage, and sealed design further ensures sealed effect, plays waterproof dirt-proof effect. Preferably, the connecting part of the upper cover and the sealing cover is provided with an upper decorative ring with decorative effect.

A further technical scheme is that the delivery port department of upper cover is equipped with the water connecting piece, the one end intercommunication of water connecting piece the delivery outlet of pump package spare, the other end with the delivery port of sealed lid is linked together, the water connecting piece is equipped with the draw-in groove, nozzle assembly's bottom be equipped with the joint spare that the draw-in groove cooperation was used, nozzle assembly with the joint of water connecting piece. The water inlet of the water outlet connecting piece is connected with the water delivery port of the pump body, a valve plate and a damping sealing piece are arranged between the water inlet of the water outlet connecting piece and the water delivery port of the pump body, and the water inlet of the pump body is connected with the pipeline through the water absorbing sealing piece.

The technical scheme is that the supporting seat is provided with a fixing groove, a lock catch is arranged in the fixing groove, and the pump assembly is fixed in the fixing groove through the lock catch. Preferably, the mounting front cover and the supporting seat are provided with mounting holes matched with each other, and the pump assembly and the supporting seat are fastened and connected through fasteners.

A further technical scheme is that the pump assembly comprises an installation front cover, an installation base and a pump, the pump passes through the installation front cover is fixed with the installation base, the pump comprises a cylinder body, a driving motor, an eccentric gear, an eccentric wheel piston rod and a piston, an output shaft of the driving motor is provided with a driving gear, the driving gear is meshed with the eccentric gear, the eccentric wheel piston rod is connected with the eccentric gear through a gear shaft, the eccentric wheel piston rod is connected with the piston, the driving motor drives the piston to reciprocate in the cylinder body through the driving gear, the eccentric gear and the eccentric wheel piston rod, and a water inlet of the pump is communicated with the liquid storage tank through a pipeline.

The technical scheme is that the cylinder body is made of plastic, the piston is made of soft plastic, the eccentric gear is made of high-strength and wear-resistant soft materials, and a metal disc is arranged at the bottom of the eccentric gear. Thus, the plastic pump body and the piston are made of soft plastic, the precision and the smoothness between the two parts are improved by fine machining, the friction force is reduced in the process of high-speed movement of the piston, the operation process is very stable, in addition, the contact area between a driving gear of the motor and an eccentric gear is increased in the operation process through the special design of the structure, the transmission efficiency is higher when the contact area between 2 transmission gears is larger, the transmission effect is more obvious, the rotating efficiency and the stability of the motor are ensured by adopting a metal gear for the driving gear of the motor, the eccentric gear is made of relatively soft, wear-resistant, high-elasticity, insulating property and high-strength tearing-resistant materials, a metal disc is creatively added at the bottom of the soft gear to ensure the stability, and the soft material can absorb the friction noise between the consumed gears in the high-speed operation process of the gears made of soft and hard 2 materials, compared with the existing metal and metal gears, the gear has the cost advantage and also has the noise reduction advantage; greatly improving the stability of the product and the experience of the user.

The technical scheme is that a control circuit board and a power supply are fixed on the mounting front cover, the control circuit board is electrically connected with the driving motor, the ultraviolet sterilizing lamp and the power supply, a charging interface is arranged on the control circuit board and passes through the control circuit board and the power supply circuit, the top cover is provided with a charging hole, the charging interface extends into the charging hole, and the sealing cover is provided with a waterproof and dustproof cover used for sealing the charging hole.

The control circuit board is provided with a power supply female terminal, an ultraviolet germicidal lamp female terminal and a driving motor female terminal which are respectively connected with a power supply, the ultraviolet germicidal lamp and the driving motor. Use subregion, the female terminal mode of molecule on the control circuit board, first can avoid connecting through the mode of soldering tin on the conventional battery, improvement work efficiency and assembly error rate that can also be very big.

The portable tooth washing device further comprises a wireless charging base, the machine body can be fixed on the wireless charging base, and a wireless charging module female terminal connected with the connecting wire charging base is arranged on the control circuit board. So, provide two kinds of charge methods, improve the convenience.

The further technical scheme is that the machine body is provided with a power key and a function key, and the power key and the function key correspond to a control button of the control circuit board. And a travel bracket is arranged between the power key and the control button corresponding to the function key and the control circuit board.

Compared with the prior art, the utility model has the beneficial effects that:

1. the nozzle assembly is detachable and can be accommodated in the machine body, and the integrated sealing plug can achieve the dustproof function while preventing water, so that the portability and the waterproof and dustproof performance of the utility model are improved.

2. Whole product adopts brand-new integral type assembly structure, earlier with the pump package spare, stock solution subassembly and control system distinguish and equip alone after and unify to each system again and equip and constitute wholly, it is sealed in the fuselage to pack into wholly after the test, make the product just can test product functional problem before the unit mount, it is big to have avoided conventional product to lead to the difficulty of doing over again because of the complete machine post assembly goes wrong, and need destroy partial spare part and lead to extravagant influence manufacturing cost when doing over again, very big reduction recruitment cost and defective index, the equipment efficiency of product under the condition of personnel with supporting rigging equipment disappearance has been improved.

3. The rated load rotating speed of the motor is dynamically optimized through the control circuit board, the frequency of pressurization and pressure relief of the valve plate is relatively balanced with the loss and pressure drop of the battery, and therefore the stability and high efficiency of high-frequency injection work of the tooth washing device are achieved; the noise reduction design of the internal motor gear and the eccentric gear has the advantages that on the premise that the cost is not increased, the noise of the tooth washing device in the load working process is obviously improved by changing the materials of the two transmission gears, and the stability of the product and the user experience are greatly improved.

4. The control circuit board is provided with the branch areas and the molecular mother terminals, so that the welding efficiency caused by the mode of soldering tin connection on the conventional battery is low, the failure of the anode and the cathode is easy to occur, the uncontrollable accidents of fire hazard and the like caused by the short circuit of the supplied materials of the battery due to the short circuit of the anode and the cathode lines can be greatly avoided, and the terminal branch areas can greatly improve the working efficiency and the assembly error rate.

5. Adopt wireless charging base, designed multiple charging methods, guaranteed the convenience that the user charges.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

FIG. 1 is a schematic structural view illustrating a state in which a dental scaler according to an embodiment of the present invention is used;

FIG. 2 is a schematic view of a dental prophylaxis device according to an embodiment of the present invention after a nozzle assembly is received;

FIG. 3 is a schematic view of a nozzle assembly receiving process according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a dental prophylaxis device according to an embodiment of the present invention;

fig. 5 is a disassembled structure view of the dental scaler according to an embodiment of the present invention.

In the figure:

1 machine body, 2 liquid storage tank, 3 support seat and 4 nozzle assembly

5 the upper cover 7 of the containing cavity 6 seals the water inlet 8

9 water outlet 10 water outlet connecting piece 11 clamping piece 12 valve sheet

13 shock-absorbing sealing member 14 fixing groove 15 locking buckle 16 mounting front cover

17 mounting base 18, piston 19 and cylinder 20 driving motor

21 eccentric gear 22 eccentric piston rod 23 driving gear 24 control circuit board

25 power supply 26 charging interface 27 charging hole 28 waterproof and dustproof cover

29 power supply female terminal 30, ultraviolet sterilizing lamp female terminal 31, drive motor female terminal 32 power supply key

33 wireless charging base 34 function key 35 stroke support 36 sealing plug

37 pipeline 38 gear shaft 39 absorbs the ornamental ring on the water seal 40

41 lower decorative ring 42 mounting seat 43 first anti-skid pad 44 mounting seat upper cover

45 charging middle frame 46 charging PCB plate 47 charging bottom cover 48 second anti-skid pad

Detailed Description

The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.

The embodiment of the utility model is as follows, referring to fig. 1-5, a portable tooth washing device comprises a machine body 1, a pump assembly, a liquid storage assembly and a nozzle assembly 4, wherein the pump assembly and the liquid storage assembly are arranged in the machine body 1, a top cover is arranged at the top of the machine body 1, the top cover is provided with a water inlet 8 communicated with the liquid storage assembly and a water outlet 9 communicated with the pump assembly, the bottom of the nozzle assembly 4 is detachably connected to the water outlet 9 of the top cover and is communicated with an output port of the pump assembly, the nozzle assembly 4 can extend into the water inlet 8 and is accommodated in the machine body 1 after being detached, the top cover is provided with a sealing plug 36 for sealing the water inlet 8 and the water outlet 9, and the sealing plug 36 is movably connected with the water inlet 8 and the water outlet 9.

Referring to fig. 1 to 4, the liquid storage assembly of the present invention is used for storing a cleaning liquid, the pump assembly provides power to eject the cleaning liquid through the nozzle assembly 4 to clean teeth, the sealing plug 36 plays a role in dust prevention and water sealing, and is designed to be an integral body, and the sealing plug 36 can be rotationally offset by 360 degrees from a connection point of the water outlet 9 or a connection point of the water inlet 8. When the tooth washing device is used, the sealing plug 36 is pulled out from the water outlet 9 of the top cover, the sealing plug 36 rotates and deviates a preset angle with the connection point of the sealing plug 36 and the water outlet 9, the bottom of the nozzle assembly 4 is fixed at the water outlet 9 of the top cover and is communicated with the pump assembly, after the pump assembly works, the nozzle assembly 4 sprays liquid to perform cleaning work, when the tooth washing device is not used, the nozzle assembly 4 is disassembled, the sealing plug 36 plugs the water inlet 8 of the top cover and is pulled out from the water inlet 8, the nozzle assembly 4 is inversely inserted into the water inlet 8, the storage function of the nozzle assembly 4 is realized, then the water inlet 8 is sealed by the sealing plug 36, the waterproof and dustproof functions are achieved, and the portability of the tooth washing device is improved.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 5, the sealing plug 36 includes a cover plate, and the bottom plate of the cover plate is provided with a first plug and a second plug, which are respectively used for plugging and sealing the water inlet 8 and the water outlet 9 on the top cover.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 3 to 5, the liquid storage assembly includes a liquid storage tank 2 and a support base 3 disposed on an upper portion of the liquid storage tank 2, the pump assembly is fixed on the support base 3, the support base 3 is provided with an accommodating cavity 5, the accommodating cavity 5 extends to a water outlet 9 of the top cover from the top of the liquid storage tank 2, the top of the liquid storage tank 2 is open, the accommodating cavity 5 communicates the liquid storage tank 2 and the water outlet 9 of the top cover, and the nozzle assembly 4 can be accommodated in the accommodating cavity. So set up, supporting seat 3 hold 5 effects that play inhalant canal on the one hand, another is convenient as nozzle assembly 4's collecting chamber, structural design is reasonable.

On the basis of the above embodiment, in another embodiment of the present invention, an ultraviolet germicidal lamp is disposed in the accommodating chamber 5. So set up, hold the ultraviolet germicidal lamp in the chamber 5 and can disinfect the disinfection to accomodating the water spray subassembly in holding chamber 5.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 5, the top cover includes an upper cover 6 and a sealing cover 7, the upper cover 6 is provided with a connection interface, the upper cover 6 is fixed on the body 1 through the connection interface and a fastening member, the sealing cover 7 is fastened on the upper cover 6, the water inlet 8 and the water outlet 9 of the top cover penetrate through the upper cover 6 and the sealing cover 7, and the sealing plug 36 is used for sealing the water inlet 8 and the water outlet 9 of the sealing cover 7. So set up, upper cover 6 is used for being connected and playing the effect of shutoff fuselage 1 with fuselage 1, and sealed 7 of lid's design further ensures sealed effect, plays waterproof dirt-proof effect. Preferably, the connection part of the upper cover 6 and the sealing cover 7 is provided with an upper decorative ring 40 with decorative effect.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 5, a water outlet connector 10 is disposed at a water outlet 9 of the upper cover 6, one end of the water outlet connector 10 is communicated with an output port of the pump assembly, the other end of the water outlet connector is communicated with the water outlet 9 of the sealing cover 7, the water outlet connector 10 is provided with a clamping groove, a clamping member 11 matched with the clamping groove is disposed at the bottom of the nozzle assembly 4, and the nozzle assembly 4 is clamped with the water outlet connector 10. The water inlet of the water outlet connecting piece 10 is connected with the water delivery port of the pump body, a valve plate 12 and a damping sealing piece 13 are arranged between the water inlet and the water delivery port of the pump body, and the water inlet of the pump body is connected with a pipeline 37 through a water absorption sealing piece 39.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in fig. 3 and 5, the supporting seat 3 is provided with a fixing groove 14, a lock catch 15 is arranged in the fixing groove 14, and the pump assembly is fixed in the fixing groove 14 by the lock catch 15. Preferably, the mounting front cover 16 and the support base 3 are provided with matching mounting holes, and the pump assembly and the support base 3 are fastened and connected by fasteners.

In another embodiment of the present invention, based on the above embodiment, as shown in fig. 4 and 5, the pump assembly comprises a mounting front cover 16, a mounting base 17 and a pump, the pump is fixed through the mounting front cover 16 and the mounting base 17, the pump comprises a cylinder 19, a driving motor 20, an eccentric gear 21, an eccentric piston rod 22 and a piston 18, an output shaft of the driving motor 20 is provided with a driving gear 23, the driving gear 23 is engaged with the eccentric gear 21, the eccentric piston rod 22 is connected to the eccentric gear 21 via a gear shaft 38, the eccentric piston rod 22 is connected to the piston 18, the driving motor 20 drives the piston 18 to reciprocate in the cylinder 19 via a driving gear 23, an eccentric gear 21 and an eccentric piston rod 22, and a water inlet of the pump is communicated with the liquid storage tank 2 through a pipeline 37.

On the basis of the above embodiment, in another embodiment of the present invention, the cylinder 19 is made of plastic, the piston 18 is made of soft plastic, the eccentric gear 21 is made of a high-strength and wear-resistant soft material, and a metal disc is disposed at the bottom of the eccentric gear 21. Thus, the plastic pump body is adopted, the piston 18 is made of soft plastic, the precision and the smoothness between the two parts are improved by finish machining, the friction force is reduced in the process of high-speed movement of the piston 18, the operation process is very stable, in addition, the contact area between the motor driving gear 23 and the eccentric gear 21 in the operation process is increased through the special design of the structure, the transmission efficiency is higher when the contact area between the two transmission gears is larger, the transmission effect is more obvious, the motor driving gear adopts the metal gear to ensure the rotation efficiency and the stability of the motor, the eccentric gear adopts the relatively soft material, the wear resistance, the high elasticity, the insulativity and the high-strength anti-pulling material, the metal disc is creatively added at the bottom of the soft gear to ensure the stability, the soft material can absorb the friction noise between the consumed gears in the high-speed operation process of the gears made of the soft material and the hard material, compared with the existing metal and metal gears, the gear has the cost advantage and also has the noise reduction advantage; greatly improving the stability of the product and the experience of the user.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 4 and 5, a control circuit board 24 and a power supply 25 are fixed on the installation front cover 16, the control circuit board 24 is electrically connected to the driving motor 20, the ultraviolet germicidal lamp and the power supply 25, a charging interface 26 is arranged on the control circuit board 24, the charging interface 26 is electrically connected to the power supply 25 through the control circuit board 24, the top cover is provided with a charging hole 27, the charging interface 26 extends into the charging hole 27, and the sealing cover 7 is provided with a waterproof and dustproof cover 28 for sealing the charging hole 27.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 5, the control circuit board 24 is provided with a power connection female terminal 29, an ultraviolet germicidal lamp female terminal 30 and a driving motor female terminal 31, which are respectively connected to the power supply 25, the ultraviolet germicidal lamp and the driving motor 20. The control circuit board 24 is provided with a branch area and a molecular mother terminal, so that the connection of the conventional battery in a soldering mode can be avoided, and the working efficiency and the assembly error rate can be greatly improved.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 and 5, the portable dental scaler further includes a wireless charging base 33, the main body 1 can be fixed on the wireless charging base 33, and the control circuit board 24 is provided with a wireless charging module female terminal connected to the wireless charging base. So, provide two kinds of charge methods, improve the convenience. The wireless charging base 33 is assembled by a lower decorative ring 41, a mounting seat 42, a first non-slip mat 43, a mounting seat upper cover 44, a charging middle frame 45, a charging PCB 46, a charging bottom cover 47 and a second non-slip mat 48.

On the basis of the above embodiments, in another embodiment of the present invention, as shown in fig. 1 and 5, the main body 1 is provided with a power key 32 and a function key 34, and the power key 32 and the function key 34 correspond to the control buttons of the control circuit board 24. A travel bracket 35 is arranged between the power key 32 and the function key 34 and the control button corresponding to the control circuit board 24.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a portable tooth cleaner, includes fuselage, pump assembly, stock solution subassembly and nozzle assembly, pump assembly and stock solution subassembly set up in the fuselage, its characterized in that, the top of fuselage is equipped with the top cap, the top cap be equipped with the water inlet that the stock solution subassembly is linked together and with the delivery port that the pump assembly is linked together, detachable the connection in nozzle assembly bottom the delivery port department of top cap and with the delivery outlet of pump assembly is linked together, but stretch into after nozzle assembly dismantles the water inlet is accomodate to in the fuselage, the top cap is equipped with and is used for the shutoff the sealing plug of water inlet and delivery port, the sealing plug with water inlet and delivery port swing joint.

2. The portable dental prophylaxis device of claim 1, wherein the liquid storage assembly comprises a liquid storage tank and a support base disposed at an upper portion of the liquid storage tank, the pump assembly is fixed to the support base, the support base is provided with a receiving cavity extending to a water outlet of the top cover from a top of the liquid storage tank, a top of the liquid storage tank is open, the receiving cavity communicates with the water outlet of the liquid storage tank and the water outlet of the top cover, and the nozzle assembly is receivable into the receiving cavity.

3. The portable dental prophylaxis device of claim 2, wherein an ultraviolet germicidal lamp is disposed within the receiving chamber.

4. The portable dental rinser of claim 3, wherein the top cover comprises an upper cover and a sealing cover, the upper cover is provided with a connecting interface and is fixed on the machine body through the connecting interface and a fastening piece, the sealing cover is clamped on the upper cover, the water inlet and the water outlet of the top cover penetrate through the upper cover and the sealing cover, and the sealing plug is used for sealing the water inlet and the water outlet of the sealing cover.

5. The portable tooth washing device as claimed in claim 4, wherein a water outlet connector is provided at the water outlet of the upper cover, one end of the water outlet connector is communicated with the output port of the pump assembly, the other end of the water outlet connector is communicated with the water outlet of the sealing cover, the water outlet connector is provided with a clamping groove, a clamping member matched with the clamping groove is provided at the bottom of the nozzle assembly, and the nozzle assembly is clamped with the water outlet connector.

6. The portable dental prophylaxis device of claim 2, wherein the support base is provided with a retaining groove, a latch being provided in the retaining groove, the pump assembly being retained in the retaining groove by the latch.

7. The portable dental prophylaxis device according to claim 4, wherein the pump assembly comprises a mounting front cover, a mounting base and a pump, the pump is fixed by the mounting front cover and the mounting base, the pump comprises a cylinder body, a driving motor, an eccentric gear, an eccentric piston rod and a piston, an output shaft of the driving motor is provided with a driving gear, the driving gear is meshed with the eccentric gear, the eccentric piston rod is connected with the eccentric gear through a gear shaft, the eccentric piston rod is connected with the piston, the driving motor drives the piston to reciprocate in the cylinder body through the driving gear, the eccentric gear and the eccentric piston rod, and a water inlet of the pump is communicated with the liquid storage tank through a pipeline.

8. The portable dental rinser of claim 7, wherein the cylinder is made of plastic, the piston is made of soft plastic, the eccentric gear is made of high-strength and wear-resistant soft material, and a metal disc is arranged at the bottom of the eccentric gear.

9. The portable tooth washing device as claimed in claim 7, wherein a control circuit board and a power supply are fixed on the front mounting cover, the control circuit board is electrically connected with the driving motor, the ultraviolet germicidal lamp and the power supply, a charging interface is arranged on the control circuit board, the charging interface is connected with the power supply circuit through the control circuit board, the top cover is provided with a charging hole, the charging interface extends into the charging hole, and the sealing cover is provided with a waterproof and dustproof cover for sealing the charging hole.

10. The portable dental rinser of claim 9, wherein the control circuit board is provided with a power connection female terminal, an ultraviolet sterilization lamp female terminal and a driving motor female terminal for respectively connecting the power supply, the ultraviolet sterilization lamp and the driving motor.