CN216642364U

CN216642364U - Liquid pumping mechanism

Info

Publication number: CN216642364U
Application number: CN202122894372.1U
Authority: CN
Inventors: 李冬保; 江西
Original assignee: Jiangxi Ruishengte Technology Co ltd
Current assignee: Jiangxi Ruishengte Technology Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-31
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a liquid pumping mechanism, which comprises a pump body, a piston, a transmission assembly and a driving device, wherein the piston, the transmission assembly and the driving device are positioned in the pump body; the transmission assembly comprises a first gear, a second gear and a transmission rod, the first gear is rotationally connected to the pump body, the second gear is connected to the driving device, the first gear is meshed with the second gear, an eccentric wheel and a balance block are arranged on the end face of the first gear, the center of the eccentric wheel and the balance block are respectively positioned on two sides of the axis of the first gear, one end of the transmission rod is rotationally connected to the eccentric wheel, and the other end of the transmission rod is connected to the piston; the driving device drives the eccentric wheel to rotate through the first gear and the second gear, so that the driving rod and the piston are driven to do reciprocating motion, the balance block on the end face of the first gear can enable the mass center of the first gear not to be deviated from the center of the eccentric wheel any more, vibration is lower when the first gear rotates, and running noise is reduced.

Description

Liquid pumping mechanism

Technical Field

The utility model relates to the field of tooth flushing devices, in particular to a liquid pumping mechanism.

Background

The water pump of the tooth flushing device is a piston pump, and in order to drive a piston in the piston pump, the piston is connected with a piston rod through an eccentric wheel which rotates to drive the piston rod to move, so that the piston is driven to do linear reciprocating motion. However, the eccentric wheel rotates to cause the tooth irrigator to vibrate, and generate large noise.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a liquid pumping mechanism to solve the problem that the existing water pump of the tooth flusher has high noise.

The purpose of the utility model is realized by adopting the following technical scheme:

a liquid pumping mechanism comprises a pump body, a piston, a transmission assembly and a driving device, wherein the piston, the transmission assembly and the driving device are positioned in the pump body; the transmission assembly comprises a first gear, a second gear and a transmission rod, the first gear is rotationally connected with the pump body, the second gear is connected with the driving device, the first gear is meshed with the second gear, an eccentric wheel and a balance block are arranged on the end face of the first gear, the center of the eccentric wheel and the balance block are respectively located on two sides of the axis of the first gear, one end of the transmission rod is rotationally connected with the eccentric wheel, and the other end of the transmission rod is connected with the piston.

In some optional embodiments, the first gear is a bevel gear, and an axis of the first gear is perpendicular to an axis of the second gear.

In some optional embodiments, one end of the driving rod is provided with a connecting hole, the eccentric wheel is arranged through the connecting hole, and the outer circumferential surface of the eccentric wheel is slidably connected to the inner wall surface of the connecting hole.

In some optional embodiments, a hollow cylinder is provided in the pump body, and the piston is slidably disposed through the cylinder.

In some optional embodiments, the piston is slidably disposed through one end of the cylinder, the other end of the cylinder is provided with a water inlet, and the side of the cylinder is provided with a water outlet.

In some alternative embodiments, the cylinder and the driving device are respectively located at two sides of the first gear, and the main shaft of the driving device and the axis of the cylinder are parallel to each other.

In certain alternative embodiments, the second gear is a bevel gear.

In certain alternative embodiments, the second gear is a spur gear.

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

the driving device drives the eccentric wheel to rotate through the first gear and the second gear, so that the driving rod and the piston are driven to do reciprocating motion, the balance block on the end face of the first gear can enable the mass center of the first gear not to be deviated from the center of the eccentric wheel any more, vibration is lower when the first gear rotates, and running noise is reduced.

Drawings

Fig. 1 is a schematic view of the internal structure of the liquid pumping mechanism of the utility model;

fig. 2 is an exploded schematic view of the fluid pumping mechanism of the utility model;

in the figure:

10. a pump body; 20. a piston; 30. a drive device; 40. a first gear; 41. an eccentric wheel; 50. a second gear; 60. a transmission rod; 61. connecting holes; 70. a cylinder body; 71. a water inlet; 72. and (7) a water outlet.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, a pumping mechanism of the present invention is schematically illustrated, and includes a pump body 10, and a piston 20, a transmission assembly and a driving device 30 located in the pump body 10.

The driving device 30 is fixedly connected to the pump body 10, the driving device 30 has a main shaft capable of actively rotating, and the driving device 30 is preferably a direct current motor; the piston 20 is slidably coupled to the pump body 10, and the piston 20 performs a pumping function when linearly reciprocating.

The transmission assembly comprises a first gear 40, a second gear 50 and a transmission rod 60, the first gear 40 is rotatably connected to the pump body 10, the second gear 50 is connected to the driving device 30, the first gear 40 is meshed with the second gear 50, and the driving device 30 drives the second gear 50 to rotate so as to drive the first gear 40 to rotate. An eccentric wheel 41 and a balance block are arranged on the end surface of the first gear 40, one end of the transmission rod 60 is rotatably connected to the eccentric wheel 41, and the other end of the transmission rod 60 is connected to the piston 20. Wherein, the rotation axis of the eccentric wheel 41 is coaxial with the axis of the first gear 40, that is, when the first gear 40 rotates, the eccentric wheel 41 rotates around the rotation axis, of course, the center of the eccentric wheel 41 is not collinear with the rotation axis of the eccentric wheel 41, and the center of the eccentric wheel 41 and the balance weight are respectively located at two sides of the axis of the first gear 40, preferably, the weight of the balance weight needs to be properly adjusted according to the specification and size of the eccentric wheel 41, so that the center of mass of the combined structure formed by the balance weight, the eccentric wheel 41 and the first gear 40 is located on the axis of the first gear 40 as much as possible, therefore, when the first gear 40 rotates, the vibration of the first gear 40 is lower, and further, the operation noise is reduced.

Specifically, the first gear 40 and the second gear 50 are both bevel gears, and the axis of the first gear 40 is perpendicular to the axis of the second gear 50. Therefore, based on this structure, the driving device 30 and the piston 20 can be arranged on both sides of the axis of the first gear 40, so that the main components of the entire pumping mechanism can be arranged in a straight line, optimizing the structure of the pumping mechanism.

In other alternative embodiments, the second gear 50 may also be a spur gear, which has lower material cost, and is beneficial to reducing the material cost of the product.

One end of the driving lever 60 is provided with a coupling hole 61, the eccentric wheel 41 is inserted through the coupling hole 61, and the outer circumferential surface of the eccentric wheel 41 is slidably coupled to the inner wall surface of the coupling hole 61, the axis of the coupling hole 61 being perpendicular to the length direction of the driving shaft. The driving rod 60 is connected with the eccentric wheel 41 through the connecting hole 61, and the driving rod 60 and the eccentric wheel 41 can be effectively prevented from being separated accidentally.

Further, a hollow cylinder 70 is provided in the pump body 10, the piston 20 is slidably inserted through the cylinder 70, and the piston 20 linearly reciprocates in the cylinder 70 to suck or pump the liquid into or out of the cylinder 70. The piston 20 is slidably disposed through one end of the cylinder 70, the other end of the cylinder 70 is provided with a water inlet 71 for sucking water into the cylinder 70, the side of the cylinder 70 is provided with a water outlet 72 for pumping water out of the cylinder 70, wherein the water inlet 71 and/or the water outlet 72 is/are provided with a one-way valve to prevent water from being discharged out of the cylinder 70 from the water inlet 71 or sucked into the cylinder 70 from the water outlet 72.

The cylinder body 70 and the driving device 30 are respectively located at two sides of the first gear 40, and the main shaft of the driving device 30 is parallel to the axis of the cylinder body 70, so that the main components of the whole liquid pumping mechanism are all arranged along a straight line direction, and the structure of the liquid pumping mechanism is optimized.

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

the driving device 30 drives the eccentric wheel 41 to rotate through the first gear 40 and the second gear 50, so as to drive the transmission rod 60 and the piston 20 to reciprocate, and the balance weight on the end surface of the first gear 40 can make the center of mass of the first gear 40 not to deviate from the center of the eccentric wheel 41 any more, so that the vibration when the first gear 40 rotates is lower, and the running noise is reduced.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. A liquid pumping mechanism is characterized by comprising a pump body, a piston, a transmission assembly and a driving device, wherein the piston, the transmission assembly and the driving device are positioned in the pump body; the transmission assembly comprises a first gear, a second gear and a transmission rod, the first gear is rotationally connected with the pump body, the second gear is connected with the driving device, the first gear is meshed with the second gear, an eccentric wheel and a balance block are arranged on the end face of the first gear, the center of the eccentric wheel and the balance block are respectively located on two sides of the axis of the first gear, one end of the transmission rod is rotationally connected with the eccentric wheel, and the other end of the transmission rod is connected with the piston.

2. The pumping mechanism as set forth in claim 1, wherein said first gear is a bevel gear, and an axis of said first gear is perpendicular to an axis of said second gear.

3. The fluid pumping mechanism according to claim 1, wherein a connection hole is formed at one end of the driving rod, the eccentric wheel is inserted into the connection hole, and an outer circumferential surface of the eccentric wheel is slidably connected to an inner wall surface of the connection hole.

4. The fluid pumping mechanism of claim 1, wherein the pump body has a hollow cylinder disposed therein, and the piston is slidably disposed through the cylinder.

5. The fluid pumping mechanism as claimed in claim 4, wherein the piston is slidably disposed through one end of the cylinder, the other end of the cylinder is provided with a water inlet, and the side of the cylinder is provided with a water outlet.

6. The pumping mechanism according to claim 4, wherein the cylinder and the driving device are respectively located on both sides of the first gear, and the main shaft of the driving device and the axis of the cylinder are parallel to each other.

7. The pumping mechanism of claim 2, wherein the second gear is a bevel gear.

8. The pumping mechanism of claim 2, wherein the second gear is a spur gear.