CN217040379U

CN217040379U - Tooth flushing device and pump thereof

Info

Publication number: CN217040379U
Application number: CN202123320736.1U
Authority: CN
Inventors: 肖峰波
Original assignee: Soundless Shenzhen Technology Co ltd; Heyuan Zhongqichen Precision Electronic Technology Co ltd
Current assignee: Soundless Shenzhen Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-26
Anticipated expiration: 2031-12-24

Abstract

The utility model relates to a tooth washing device and a pump thereof. The pump comprises a shell, a driving assembly, an elastic pressurizing sealing element and a seat body, wherein the driving assembly, the elastic pressurizing sealing element and the seat body are arranged in the shell; the elastic pressurizing sealing piece comprises a main body part and a sealing part arranged on the periphery of the main body part, and the sealing part is arranged between the seat body and the shell in a sealing manner so as to isolate the pump cavity from the shell; the main body part is arranged corresponding to the pump cavity, and the radial size of the main body part is smaller than or equal to that of the pump cavity; the driving component drives the main body part to do reciprocating motion relative to the base body so as to control the liquid inlet and outlet of the pump cavity. The pump has the advantages of being not easy to leak water and air leakage and the like while ensuring the sealing performance, and the service life of the pump is long.

Description

Tooth flushing device and pump thereof

Technical Field

The utility model relates to a water pump technical field, more specifically say, relate to a tooth washing device and pump thereof.

Background

The pump is used for realizing the control of liquid inlet and outlet and is widely applied to various fields. Some pumps in the prior art include a driving assembly, a base and a pressurizing sealing member, the base is provided with a pump cavity, and the pressurizing sealing member is disposed in the pump cavity and is in clearance fit with an inner wall of the base, so that the pressurizing sealing member is driven by the driving assembly to reciprocate relative to the base. Because the pressurizing sealing element is in contact fit with the base body, when the pressurizing sealing element reciprocates relative to the base body, frictional resistance is generated between the pressurizing sealing element and the base body, and the pressurizing sealing element is abraded under long-time operation, so that the sealing performance between the pressurizing sealing element and the base body is reduced, the problems of water leakage, air leakage and the like of the pump are caused, and the service life of the pump is prolonged.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide an improved tooth washing device and a pump thereof.

The utility model provides a technical scheme that its technical problem adopted is: constructing a pump, which comprises a shell, a driving component arranged in the shell, an elastic pressurizing sealing piece and a base body, wherein the base body is provided with a pump cavity, and the driving component is in driving connection with the elastic pressurizing sealing piece;

the elastic pressurizing sealing piece comprises a main body part and a sealing part arranged on the periphery of the main body part, and the sealing part is arranged between the seat body and the shell in a sealing manner so as to isolate the pump cavity from the shell; the main body part is arranged corresponding to the pump cavity, and the radial size of the main body part is smaller than or equal to that of the pump cavity; the driving component drives the main body part to do reciprocating motion relative to the base body so as to control the liquid inlet and outlet of the pump cavity.

Preferably, the main body part is connected with the sealing part through a connecting part, and an installation groove for accommodating the sealing part and an accommodating groove for accommodating the connecting part are arranged between the seat body and the housing;

the sealing part is arranged in the mounting groove in a sealing mode, the connecting part is arranged in the containing groove, and a movement gap for the connecting part to move back and forth along with the main body part is formed between the containing groove and the connecting part.

Preferably, the sealing part is cylindrical, the size of the sealing part is larger than that of the connecting part, and the connecting part is connected to the middle part of the sealing part.

Preferably, the main body, the sealing portion and the connecting portion are of an integral structure and made of an elastic material.

Preferably, one end of the main body portion, which is close to the pump cavity, protrudes towards the end where the pump cavity is located, and is arranged in an arc surface.

Preferably, the driving assembly comprises a motor, a driving gear sleeved on an output shaft of the motor, an eccentric gear seat matched with a mesh tooth of the driving gear, a gear rod and a connecting rod; the eccentric gear seat is provided with an eccentric shaft, and the gear rod is arranged in the shell and penetrates through the eccentric shaft;

the first end of the connecting rod is sleeved on the eccentric shaft, and the second end of the connecting rod is connected with the main body part.

Preferably, the driving gear is a bevel gear, and the eccentric gear seat is an eccentric bevel gear seat.

Preferably, the second end of the link is bonded to the body portion.

Preferably, the pump further comprises an inlet connector assembly for inlet of liquid and a nozzle assembly for discharge of liquid.

The utility model also provides a tooth washing device, which comprises the pump.

Implement the utility model discloses a towards tooth ware and pump thereof has following beneficial effect:

the sealing part is used for realizing the sealing isolation of the pump cavity and the shell; the radial dimension of the main body part is smaller than that of the pump cavity, so that the main body part can keep a certain gap with the inner wall surface of the seat body in the process of reciprocating motion relative to the seat body under the drive of the drive assembly, thereby effectively avoiding the main body part from frictional wear.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is an exploded view of a pump according to some embodiments of the present invention;

fig. 2 is a schematic cross-sectional view of a pump in accordance with some embodiments of the present invention;

fig. 3 is another schematic cross-sectional view of a pump according to some embodiments of the present invention;

FIG. 4 is a partial enlarged view of the area A shown in FIG. 3;

fig. 5 is a partially enlarged view of the region B shown in fig. 3.

In the drawing, 10 is a pump, 1 is a shell, 11 is a first end, 12 is a second end, 13 is an upper cover, 14 is a lower cover, 2 is a driving component, 21 is a motor, 22 is a driving gear, 23 is an eccentric gear seat, 231 is an eccentric shaft, 24 is a gear rod, 25 is a connecting rod, 251 is a first end, 2511 is a sleeve, 252 is a second end, 3 is an elastic pressurizing sealing element, 31 is a main body part, 311 is a first end, 312 is a second end, 32 is a sealing part, 33 is a connecting part, 4 is a seat body, 41 is a pump cavity, 411 is a first opening, 412 is a second opening, 5 is a connector component, 51 is a liquid inlet connector, 511 is a liquid inlet channel, 5111 is a first liquid inlet, 5112 is a first liquid outlet, 52 is a liquid inlet valve plate, 521 is a first valve body, 53 is a liquid inlet sealing ring, 6 is a nozzle component, 61 is a nozzle sealing ring, 611 is a nozzle sealing ring, a liquid outlet, 62 is a support, a liquid outlet channel, 622 is a spring groove, 623. the valve comprises a liquid inlet gap 63, a spring 64, a liquid outlet valve plate 641, a second valve body 71, a mounting groove 72, a receiving groove 73, a screw 74 and a movement gap.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is given in conjunction with the examples and the accompanying drawings to illustrate the present invention in further detail, and the exemplary embodiments and the description thereof are only used for explaining the present invention, and are not intended to limit the present invention.

Fig. 1 to 3 show a pump according to some embodiments of the present invention, the pump 10 is suitable for a device such as a tooth washing device that needs to output liquid flow, the pump 10 has the advantages of good sealing performance, being not easy to leak water and gas, and the like, and the pump 10 has a long service life.

As shown in fig. 1 to 3, the pump 10 includes a housing 1, a driving assembly 2, an elastic pressing sealing member 3, and a seat body 4, the housing 1 is provided with a receiving cavity, and the driving assembly 2, the elastic pressing sealing member 3, and the seat body 4 are disposed in the receiving cavity of the housing 1. The base body 4 is provided with a pump chamber 41, the driving component 2 is in driving connection with the elastic pressurizing sealing piece 3, and the elastic pressurizing sealing piece 3 is driven to do reciprocating motion relative to the base body 4 so as to control the liquid inlet and outlet of the pump chamber 41.

Specifically, the housing 1 includes a first end 11 and a second end 12 in the axial direction, the first end 11 is disposed opposite to the second end 12, and the seat body 4 is disposed at the second end 12 of the housing 1 and partially overlaps with the housing 1. The pump chamber 41 of the seat body 4 includes a first opening 411, the first opening 411 is disposed toward the first end 11 of the housing 1 and is communicated with the accommodating chamber of the housing 1, so that the elastic pressure sealing member 3 can reciprocate relative to the seat body 4 through the first opening 411.

The elastic pressure seal member 3 includes a main body portion 31 and a seal portion 32 provided on the periphery of the main body portion 31. The sealing portion 32 is disposed between the seat body 4 and the casing 1 in a sealing manner, and the main body portion 31 corresponds to the first opening 411 of the pump chamber 41, so that the main body portion 31 cooperates with the sealing portion 32 to isolate the pump chamber 41 from the casing 1, thereby ensuring the sealing performance of the pump chamber 41, and the main body portion 31 can reciprocate relative to the seat body 4 under the driving of the driving assembly 2.

To achieve the installation of the sealing part 32, a mounting groove 71 for accommodating the sealing part 32 is provided between the end of the housing body 4 where the first opening 411 is located and the housing 1, the sealing part 32 is fitted into the mounting groove 71, and the sealing part 32 is sealingly disposed in the mounting groove 71 to prevent the liquid in the pump chamber 41 from leaking out of the mounting groove 71. The sealing portion 32 is continuously disposed on the periphery of the main body portion 31, and the sealing portion 32 may be disposed in a cylindrical shape. Of course, in other embodiments, the sealing portion 32 may be provided in other shapes such as a trumpet shape, as long as the sealing between the pump chamber 41 and the housing 1 can be achieved.

The main body 31 realizes the liquid inlet and outlet control of the pump chamber 41 at the first opening 411 of the pump chamber 41, wherein the radial dimension of the main body 31 is smaller than that of the pump chamber 41, so that when the main body 31 reciprocates relative to the seat body 4, a certain gap can be kept between the main body 31 and the inner wall surface of the seat body 4, thereby avoiding the main body 31 from being worn by friction.

The body portion 31 effects the liquid inlet and outlet control of the pump chamber 41 through the end surface of the first end 311 thereof adjacent to the first opening 411 of the pump chamber 41. The end surface of the first end 311 of the main body 31 protrudes toward the end of the pump chamber 41, and may be configured as a curved surface 311 to facilitate the liquid pushing of the main body 31. In other embodiments, the end surface of the first end 311 of the main body 31 may be provided with other shapes for facilitating liquid pushing. It is understood that the radial dimension of the main body 31 may also be equal to the radial dimension of the pump chamber 41, and since the end surface of the first end 311 of the main body 31 is set to be an arc surface 311, the main body 31 may also maintain a certain gap with the inner wall surface of the seat body 4 during the movement.

The main body portion 31 and the sealing portion 32 are connected by a connecting portion 33, wherein the axial dimension of the connecting portion 33 is smaller than the axial dimension of the sealing portion 32, and the connecting portion 33 can be connected to a middle position of the sealing portion 32. Of course, the connecting portion 33 may be connected to any position between both ends of the sealing portion 32 in the axial direction as long as the sealing portion 32 is prevented from coming out of the mounting groove 71.

A receiving groove 72 for receiving the connecting portion 33 is provided between the seat body 4 and the housing 1, and the connecting portion 33 is disposed in the receiving groove 72. Wherein the axial dimension of the receiving groove 72 is larger than the axial dimension of the connecting portion 33, such that a movement gap 74 is formed between the receiving groove 72 and the connecting portion 33, the movement gap 74 surrounds the periphery of the connecting portion 33, such that when the main body portion 31 reciprocates, the movement gap 74 allows the connecting portion 33 to reciprocate following the main body portion 31.

The sealing portion 32, the main body 31, and the connecting portion 33 are integrally formed, and may be formed by an integral molding process. The sealing portion 32, the body portion 31, and the connecting portion 33 are made of an elastic material such as silicone rubber or rubber. As can be appreciated, the sealing portion 32 is made of an elastic material, and the sealing effect is good; the connecting portion 33 is made of an elastic material and can follow the body portion 31 by being deformed when the body portion 31 reciprocates.

The driving assembly 2 comprises a motor 21, a driving gear 22 sleeved on an output shaft of the motor 21, an eccentric gear seat 23 engaged with the driving gear 22, a gear rod 24 and a connecting rod 25. Wherein, the eccentric gear seat 23 is provided with an eccentric shaft 231, the gear rod 24 is arranged in the housing 1 and is stationary relative to the housing 1, and the gear rod 24 is arranged in the eccentric shaft 231 in a penetrating manner. The first end 251 of the connecting rod 25 is sleeved on the eccentric shaft 231, and the second end 252 of the connecting rod 25 is connected with the main body 31. Wherein the driving gear 22 may be a bevel gear, and the eccentric gear seat 23 may be an eccentric bevel gear seat.

The first end 251 of the connecting rod 25 is provided with a sleeve 2511, and the eccentric shaft 231 is sleeved with the sleeve 2511. The second end 252 of the link 25 is bonded to the body portion 31. Specifically, the link 25 may be a T-shaped link, and therefore, the second end 252 of the link 25 is disposed in a T-shaped structure, one end of the main body 31 close to the link 25, that is, the second end 312 of the main body 31 is provided with a T-shaped groove matched with the second end 252 of the link 25, and the T-shaped structure of the second end 252 of the link 25 is matched with the T-shaped groove of the second end 312 of the main body 31 and is fixed by gluing. Of course, the second end 252 of the link 25 and the second end 312 of the body 31 may be provided in shapes other than T-shape, as long as the two can be fixed by adhesion.

It can be understood that the driving assembly 2 is driven by the principle that the motor 21 rotates to drive the driving gear 22 to rotate, the eccentric gear seat 23 is engaged with the driving gear 22, so that the eccentric gear seat 23 is driven by the driving gear 22 to rotate, and the eccentric structure of the eccentric shaft 231 on the eccentric gear seat 23 is utilized to drive the reciprocating motion of the sleeve 2511 of the connecting rod 25, so as to drive the reciprocating motion of the main body 31, and the air pressure in the pump cavity 41 is changed to complete the liquid sucking and spraying actions. And, under main part 31's drive, connecting portion 33 is dragged and takes place deformation and follow main part 31 reciprocating motion, and connecting portion 33, main part 31 keep a certain distance with pedestal 4 in the motion process, have avoided taking place friction and wear, have reduced the seepage risk.

The motor 21, the driving gear 22, the eccentric gear seat 23, the connecting rod 25, the elastic pressure sealing member 3, and the seat body 4 are disposed in the housing 1 from the first end 11 to the second end 12 along the axial direction of the housing 1, wherein the housing 1 includes an upper cover 13 and a lower cover 14, so as to dispose each component and each structure in the housing 1, and the upper cover 13 and the lower cover 14 can be connected by a plurality of screws 73 or other connecting structures.

Referring to fig. 4 and 5, the pump 10 further includes a liquid inlet joint assembly 5 for feeding liquid and a nozzle assembly 6 for discharging liquid, and the liquid inlet joint assembly 5 includes a liquid inlet joint 51, a liquid inlet valve sheet 52 and a liquid inlet seal ring 53. Specifically, the seat body 4 is provided with a second opening 412, the second opening 412 is located at an end of the pump chamber 41 far away from the first opening 411, the second opening 412 is communicated with the pump chamber 41 and is arranged opposite to the first opening 411, and the size of the second opening 412 is smaller than that of the first opening 411.

The liquid inlet connector 51 is disposed on the side of the seat body 4 and corresponds to the second opening 412, the liquid inlet connector 51 is provided with a liquid inlet passage 511, and the liquid inlet passage 511 includes a first liquid inlet 5111 for receiving external liquid and a first liquid outlet 5112 communicated with the second opening 412. The liquid inlet valve sheet 52 is disposed on an end surface where the first liquid outlet 5112 of the liquid inlet joint 51 is located, and the liquid inlet valve sheet 52 is provided with a first valve body 521 capable of opening and closing to block the first liquid outlet 5112. The liquid inlet seal 53 is provided between the liquid inlet joint 51 and the base body 4 to prevent liquid leakage.

The nozzle assembly 6 includes a nozzle sealing sleeve 61, a bracket 62 provided with a liquid outlet channel 621, a spring 63 and a liquid outlet valve plate 64, the bracket 62 is disposed at one end of the seat body 4 far away from the first opening 411 and is located on the same axis with the seat body 4, and the liquid outlet channel 621 is communicated with the second opening 412.

The end of the bracket 62 near the second opening 412 is provided with a spring groove 622 for the spring 63 to be sleeved, the spring groove 622 surrounds the periphery of the liquid outlet channel 621, and the end surface of the bracket 62 is closer to the second opening 412 than the end surface of the spring groove 622. The spring 63 is sleeved in the spring groove 622, and the liquid outlet valve plate 64 is arranged on the end surface of the bracket 62 near the second opening 412. The axial length of the spring 63 in the natural state is greater than that of the spring groove 622, and the spring 63 abuts against the liquid outlet valve plate 64 in the natural state.

The liquid outlet valve plate 64 is provided with a second valve body 641 for blocking the liquid inlet of the liquid outlet channel 621 of the bracket 62, and a liquid inlet gap 623 is arranged between the second valve body 641 and the inner wall of the bracket 62 and the spring 63. The nozzle sealing sleeve 61 is sleeved on one end of the seat body 4 far away from the first opening 411 for sealing the seat body 4 and the bracket 62 to prevent liquid leakage. Wherein, the nozzle sealing sleeve 61 is provided with a liquid outlet 611 communicated with the liquid outlet channel 621. The liquid inlet valve plate 52 and the liquid outlet valve plate 64 are made of elastic materials such as silica gel and rubber, so as to be deformed conveniently.

It is to be understood that, for the sake of convenience of description, the principle of the pump chamber 41 is explained with both end directions in the axial direction in fig. 3 as the left and right directions. The liquid inlet and outlet principle of the pump chamber 41 is that when the main body portion 31 moves to the left, the first valve body 521 is driven by the air pressure in the pump chamber 41 to deform and turn over toward the second opening 412, so as to open the liquid inlet of the liquid inlet passage 511 to communicate with the pump chamber 41, and thus to input the liquid into the pump chamber 41. At this time, under the tension of the spring 63, the second valve body 641 blocks the liquid inlet of the liquid outlet passage 621 of the bracket 62, so that no liquid is output from the liquid outlet passage 621.

When the main body 31 moves to the right, the first valve 521 is kept in a state of blocking the liquid inlet of the liquid inlet passage 511 by the air pressure in the pump chamber 41, and thus the pump chamber 41 stops supplying liquid. At this time, the spring 63 is compressed, the second valve body 641 is deformed, and the liquid in the pump chamber 41 enters the liquid outlet passage 621 through the liquid inlet gap 623, so that the liquid is output. Meanwhile, the main body part 31 has a certain elasticity during reciprocating motion, so that when the liquid in the pump cavity 41 contacts the surface of the main body part 31, the liquid is subjected to the elasticity of the main body part 31 and is ejected into the liquid outlet channel 621; therefore, when the liquid is discharged, the liquid is subjected to both the pressure in the pump chamber 41 and the elastic force of the main body portion 31, and the discharge pressure is higher.

Wherein, the liquid inlet joint component 5 and the nozzle component 6 can be connected to the seat body 4 through screws 73 or other connecting structures. It can be understood that the present invention is described with the length direction of the pump as the axial direction of each component, and the radial direction of the pump as the radial direction of each component.

The utility model also provides a tooth flushing device, which adopts the pump 10 in the above embodiment.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A pump is characterized by comprising a shell (1), a driving component (2) arranged in the shell (1), an elastic pressurizing sealing piece (3) and a base body (4), wherein the base body (4) is provided with a pump cavity (41), and the driving component (2) is in driving connection with the elastic pressurizing sealing piece (3);

the elastic pressurizing sealing piece (3) comprises a main body part (31) and a sealing part (32) arranged on the periphery of the main body part (31), and the sealing part (32) is arranged between the base body (4) and the shell (1) in a sealing mode so as to isolate the pump cavity (41) from the shell (1); the main body part (31) is arranged corresponding to the pump cavity (41), and the radial size of the main body part (31) is smaller than or equal to that of the pump cavity (41); the driving component (2) drives the main body part (31) to do reciprocating motion relative to the seat body (4) so as to control the liquid inlet and outlet of the pump cavity (41).

2. The pump according to claim 1, wherein the main body portion (31) and the sealing portion (32) are connected by a connecting portion (33), and a mounting groove (71) for accommodating the sealing portion (32) and a receiving groove (72) for accommodating the connecting portion (33) are provided between the holder body (4) and the housing (1);

the sealing part (32) is arranged in the mounting groove (71) in a sealing mode, the connecting part (33) is arranged in the accommodating groove (72), and a movement gap (74) for enabling the connecting part (33) to follow the main body part (31) to reciprocate is formed between the accommodating groove (72) and the connecting part (33).

3. The pump according to claim 2, wherein the sealing portion (32) is cylindrical, and the sealing portion (32) has a size larger than that of the connecting portion (33), and the connecting portion (33) is connected to a middle portion of the sealing portion (32).

4. The pump according to claim 2, wherein the main body portion (31), the sealing portion (32) and the connecting portion (33) are of unitary construction and are made of an elastomeric material.

5. The pump according to claim 1, wherein an end of the main body portion (31) near the pump chamber (41) is convex toward an end where the pump chamber (41) is located, and is provided in an arc surface.

6. The pump according to claim 1, characterized in that the drive assembly (2) comprises an electric motor (21), a drive gear (22) sleeved on an output shaft of the electric motor (21), an eccentric gear seat (23) engaged with the drive gear (22), a gear rod (24) and a connecting rod (25); the eccentric gear seat (23) is provided with an eccentric shaft (231), and the gear rod (24) is arranged in the shell (1) and penetrates through the eccentric shaft (231);

the first end (251) of the connecting rod (25) is sleeved on the eccentric shaft (231), and the second end (252) is connected with the main body part (31).

7. A pump according to claim 6, wherein the drive gear (22) is a bevel gear and the eccentric gear seat (23) is an eccentric bevel gear seat.

8. The pump of claim 6, wherein the second end (252) of the connecting rod (25) is bonded to the main body portion (31).

9. A pump according to claim 1, characterized in that the pump (10) further comprises an inlet connection assembly (5) for inlet of liquid and a nozzle assembly (6) for discharge of liquid.

10. A dental irrigator comprising a pump (10) according to any one of claims 1 to 9.