CN217029203U

CN217029203U - Piston type liquid pump

Info

Publication number: CN217029203U
Application number: CN202220166824.6U
Authority: CN
Inventors: 吴华桃
Original assignee: Dongguan Huachuang Youpin Electronic Technology Co ltd
Current assignee: Dongguan Huachuang Youpin Electronic Technology Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-22
Anticipated expiration: 2032-01-21

Abstract

The utility model discloses a piston type liquid pump, which comprises a three-way pump body, a soft rubber cup, a driving rod, a piston, a lantern ring and a wear-resistant buffering soft rubber; the outer ring of the soft rubber cup is fixedly and hermetically connected with the side of the liquid suction cavity of the three-way pump body; the piston is fixedly connected with the middle movable part of the soft rubber cup; the lantern ring is fixedly pressed on the outer ring of the soft rubber cup, the wear-resistant buffering soft rubber is arranged on the outer side of the piston, the driving rod is connected with the piston and drives the piston to move, and the middle part of the soft rubber cup can be pushed up and down to realize water suction and water push-out, and the wear-resistant buffering rubber cup has the beneficial effects that: the scheme optimizes the phenomenon that the piston can generate movable impact noise when moving in the three-way pump cavity, so that the piston can move in the inner part of the wear-resistant buffering soft rubber, and the noise is reduced; in addition, the lantern ring is additionally arranged, the soft rubber cup outer ring can be tightly sleeved and compressed, the water resistance and the air tightness are better when the pump moves at a high speed, the steel bushing is preferably used between the eccentric wheel and the driving rod, and the sliding property and the wear resistance of the connection transmission part are improved.

Description

Piston type liquid pump

Technical Field

The utility model belongs to the technical field of tooth flushing devices, and particularly relates to a piston type liquid pump.

Background

At present, the liquid pump of the tooth flusher has larger noise in the using process, the sealing performance is not good, and the water leakage phenomenon is easy to occur, and the Chinese patent CN201821865396.6 discloses a water-tight tooth flusher, which comprises: the device comprises a shell, a soft rubber pump, a three-way pump body and a connecting piston; the three-way pump body is accommodated in the shell and fixedly connected with the shell, a first accommodating cavity is arranged in the three-way pump body, the flexible glue pump is accommodated in the first accommodating cavity, one end of the flexible glue pump is fixedly connected with the three-way pump body, the connecting piston is accommodated in the first accommodating cavity, the connecting piston can slide in the first accommodating cavity, the other end of the flexible glue pump is fixedly connected with the connecting piston, and the flexible glue pump can be stretched or contracted to pump water through the sliding of the connecting piston; the design that this water-tight towards tooth ware adopts soft glue pump and tee bend pump body to connect, realize absorbing water and going out water through the extension and the shrink of soft glue pump, solved traditional towards tooth ware and pump water through pump body and piston or piston rubber ring cooperation and can produce the problem that the friction leads to leaking, improve this water-tight towards tooth ware's life, but this kind towards tooth ware pump is towards the tooth in-process, the noise is great when connecting piston and tee bend pump body inner wall friction to water inlet valve and outlet valve adopt the design of duck tongue valve block formula, this kind of valve block structure is opened frequently and is closed the in-process and take place the bad problem that resets easily.

SUMMERY OF THE UTILITY MODEL

To solve the problems raised in the background art described above. The utility model provides a piston type liquid pump which can effectively solve the problems of the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a piston type liquid pump comprises a three-way pump body, a soft rubber cup, a driving rod, a piston, a lantern ring and a wear-resistant buffering soft rubber; the three-way pump body is provided with a liquid inlet, a liquid outlet and a liquid suction cavity; the outer ring of the soft rubber cup is fixedly and hermetically connected with the liquid suction cavity side of the three-way pump body; the piston is fixedly connected with the middle movable part of the soft rubber cup; the lantern ring is fixed to be supported and pressed at the outer ring of the soft rubber cup, the wear-resisting buffering soft rubber is installed on the outer side of the piston, the driving rod is connected with the piston and drives the piston to move, and the middle part of the soft rubber cup can be pushed up and down to suck water and push out water.

More specifically, business turn over liquid mouth is installed to tee bend pump body one side, install into liquid valve between business turn over liquid mouth and the tee bend pump body, be provided with mobilizable feed liquor tongue piece and play liquid tongue piece on the business turn over liquid valve, the feed liquor hole side is provided with feed liquor spring, and the play water hole side is provided with out the liquid spring.

More specifically, the liquid inlet and outlet valves are of an integrally formed structure or the liquid inlet and outlet valves comprise independent liquid inlet check valves and liquid outlet check valves.

More specifically, the piston is connected with a driving rod clamping hook, and the piston and the driving rod are provided with a clamping head and a clamping groove which are matched.

More specifically, flexible glue leather cup and tee bend pump body imbibition chamber side close fit sealing fixed connection, the lantern ring is connected with tee bend pump body trip, lantern ring and tee bend pump body sticis in the both sides of flexible glue leather cup outer loop.

More specifically, the liquid inlet and outlet nozzle is welded with the three-way pump body through ultrasonic waves.

More specifically, the gear transmission mechanism further comprises a motor, a pinion and a crown gear, wherein the pinion is connected to an output shaft of the motor and is meshed with the crown gear, an eccentric wheel is arranged in the middle of the crown gear, and one end of a driving rod is sleeved on the outer side of the eccentric wheel.

More specifically, the piston includes a piston base and a piston upper cover that are fastened together by screws.

More specifically, the bottom end of the middle part of the soft rubber cup is connected between the piston base and the piston upper cover through a clamping hook.

More specifically, a steel sleeve is sleeved outside the eccentric wheel.

Compared with the prior art, the utility model has the beneficial effects that: the scheme optimizes the phenomenon that the piston generates moving impact noise when moving in the three-way pump cavity, so that the piston moves in the interior of the wear-resistant buffering soft rubber, and the noise is reduced; in addition, the lantern ring is additionally arranged, so that the outer ring of the soft rubber cup can be tightly sleeved and compressed, the water and air tightness is better when the pump moves at a high speed, the steel bushing is preferably used between the eccentric wheel and the driving rod, the sliding property and the wear resistance of the connecting part are improved, the rubber cup is not easy to wear in use, and the service life is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is one of the exploded views of the present invention;

FIG. 3 is a second exploded view of the present invention;

FIG. 4 is a schematic structural diagram of a liquid inlet and outlet valve according to the first embodiment;

fig. 5 is a schematic structural view of a liquid inlet and outlet valve according to a second embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a first embodiment of a piston-type liquid pump includes a three-way pump body 1, a soft rubber cup 2, a driving rod 3, a piston 4, a lantern ring 5 and a wear-resistant soft buffer rubber 6, wherein the three-way pump body 1 has a liquid inlet hole 11, a liquid outlet hole 12 and a liquid suction cavity 13; the outer ring of the soft rubber cup 2 is fixedly and hermetically connected with the liquid suction cavity side of the three-way pump body 1; the piston 4 is fixedly connected with the middle movable part of the soft rubber cup 2; the wear-resistant buffering soft rubber 6 is assembled on the outer side of the piston, the driving rod 3 is connected with the piston 4 and drives the piston 4 to move, and the middle part of the soft rubber cup 2 can be pushed up and down to realize water pumping and water pushing.

The liquid inlet and outlet valve 8 is assembled between the three-way pump body 1 and the liquid inlet and outlet nozzle 7 and is fixed in a sealing mode to form a liquid inlet channel and a liquid outlet channel, the liquid inlet spring 81 is arranged on the side of the liquid inlet hole 11, the liquid outlet spring 82 is arranged on the side of the liquid outlet hole 12, the liquid inlet tongue piece 83 of the liquid inlet and outlet valve 8 is opened during liquid suction, the liquid outlet tongue piece 84 is closed, the liquid outlet tongue piece 84 is opened during pump liquid discharge, and the liquid inlet tongue piece 83 is closed.

The liquid inlet and outlet valve 8 is an integral soft rubber integrated structure, and comprises a movable liquid inlet tongue piece 83 and a movable liquid outlet tongue piece 84. The liquid inlet spring 81 and the liquid outlet spring 82 enable the liquid inlet tongue piece 83 and the liquid outlet tongue piece 84 to be easy to reset after being opened, the liquid inlet tongue piece and the liquid outlet tongue piece are not deformed and invalid even if the liquid inlet tongue piece and the liquid outlet tongue piece are frequently moved, and in other embodiments, independent water inlet one-way valves and independent water outlet one-way valves (split type structures) can be used.

The piston 4 and the driving rod 3 are assembled in a clamping mode, and the driving rod 3 drives the piston 4 to move back and forth;

the outer ring of the soft rubber cup 2 is tightly matched, fixed and hermetically connected with the side groove of the liquid suction cavity of the pump body 1, a lantern ring 5 is arranged on the side of the outer ring of the soft rubber cup 2, the lantern ring 5 is fixedly buckled with the tee pump body 1, and the lantern ring 5 and the tee pump body 1 are tightly pressed from two sides of the outer ring of the soft rubber cup 2 to form secondary water resistance.

The liquid inlet and outlet nozzle 8 and the three-way pump body 1 are welded together through ultrasonic waves.

The lantern ring 5, the soft rubber cup 2, the piston 4, the liquid inlet and outlet nozzle 8 and the three-way pump body 1 are assembled together and fixed in the containing cavity between the front cover 96 and the rear cover 97.

The crown gear 91 is arranged in a cavity between a front cover 96 and a rear cover 97 through a connecting shaft 95, an output shaft of the motor 9 is connected with a pinion 93, the pinion 93 is meshed with the crown gear 91, an eccentric wheel 92 is arranged in the middle of the crown gear 91, and the other end of the driving rod 3 is sleeved outside the eccentric wheel 92;

the motor 9 is electrified to rotate to drive the pinion 93 to rotate, the pinion 93 drives the crown gear 91 to rotate, the eccentric wheel of the crown gear 91 synchronously rotates, the eccentric wheel 92 rotates to drive the driving rod 3 to move, the driving rod 3 moves to drive the piston 4 to reciprocate in the wear-resistant buffering soft rubber 6, and the piston 4 moves to drive the middle part of the soft rubber cup 2 to push up and down.

The piston base 41 and the piston upper cover 42 are locked by screws 43, and the bottom end of the middle part of the soft rubber cup 2 is buckled between the piston base 41 and the piston upper cover 42; the wear-resistant buffering soft rubber 6 is sleeved outside the piston 4 and fixedly installed in the corresponding grooves of the front cover 96 and the rear cover 97, the piston 4 moves in the wear-resistant buffering soft rubber 6, and the piston effectively absorbs shock and reduces noise when moving at high speed.

The outer side of the eccentric wheel 92 is sleeved with a steel sleeve 94, so that the wear resistance between the eccentric wheel 92 and the driving rod 3 is enhanced, and the water pressure is not easy to reduce due to wear.

This scheme is effectual to have solved the piston and can produce the phenomenon that the activity striking produced the noise when the high-speed activity in the pump body, lets the piston move in the inside of wear-resisting buffering flexible glue, has played the shock attenuation and has fallen the effect of noise. In addition, the lantern ring is additionally arranged, so that the outer ring of the leather cup soft rubber pump can be tightly sleeved and compressed, and the water resistance and the air tightness are better when the pump moves at a high speed.

In the second embodiment, the liquid inlet and outlet valve 8 structure shown in fig. 5 is used, and the liquid inlet and outlet valve 8 is a separate soft rubber structure, and includes two independent soft rubber structures, and the working principle thereof is the same as that of the first embodiment, and is not described herein again.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A piston type liquid pump is characterized by comprising a three-way pump body, a soft rubber cup, a driving rod, a piston, a lantern ring and a wear-resistant buffering soft rubber; the three-way pump body is provided with a liquid inlet hole, a liquid outlet hole and a liquid suction cavity; the outer ring of the soft rubber cup is fixedly and hermetically connected with the liquid suction cavity side of the three-way pump body; the piston is fixedly connected with the middle movable part of the soft rubber cup; the lantern ring is fixed to be supported and pressed at the outer ring of the soft rubber cup, the wear-resisting buffering soft rubber is installed on the outer side of the piston, the driving rod is connected with the piston and drives the piston to move, and the middle part of the soft rubber cup can be pushed up and down to suck water and push out water.

2. The piston-type liquid pump as claimed in claim 1, wherein a liquid inlet and outlet nozzle is installed at one side of the three-way pump body, a liquid inlet and outlet valve is installed between the liquid inlet and outlet nozzle and the three-way pump body, a movable liquid inlet tongue piece and a movable liquid outlet tongue piece are arranged on the liquid inlet and outlet valve, a liquid inlet spring is arranged at the liquid inlet hole side, and a liquid outlet spring is arranged at the water outlet hole side.

3. The piston-type liquid pump as claimed in claim 2, wherein the liquid inlet and outlet valves are of an integral structure or the liquid inlet and outlet valves comprise separate liquid inlet check valves and liquid outlet check valves.

4. The piston-type liquid pump as claimed in claim 1, wherein the piston is hooked to a drive rod, the piston and the drive rod being provided with matching catches and grooves.

5. The piston-type liquid pump as claimed in claim 1, wherein the soft rubber cup is fixedly connected with the side of the liquid suction chamber of the three-way pump body in a tight fit manner, the lantern ring is connected with the snap of the three-way pump body, and the lantern ring and the three-way pump body are tightly pressed on two sides of the outer ring of the soft rubber cup.

6. The piston-type liquid pump as claimed in claim 2, wherein the liquid inlet and outlet nozzles are ultrasonically welded to the three-way pump body.

7. The piston type liquid pump as claimed in claim 1, further comprising a motor, a pinion and a crown gear, wherein the pinion is connected to an output shaft of the motor, the pinion is engaged with the crown gear, an eccentric wheel is arranged in the middle of the crown gear, and one end of the driving rod is sleeved outside the eccentric wheel.

8. The piston-type liquid pump as claimed in claim 1, wherein the piston comprises a piston base and a piston upper cover which are screwed together.

9. The piston-type liquid pump as claimed in claim 8, wherein the bottom end of the middle part of the soft rubber cup is connected between the piston base and the piston upper cover by a hook.

10. The piston type liquid pump as claimed in claim 7, wherein a steel sleeve is fitted over an outer side of the eccentric wheel.