CN115182863A

CN115182863A - Miniature plunger pump

Info

Publication number: CN115182863A
Application number: CN202210895922.8A
Authority: CN
Inventors: 史远吉
Original assignee: Changzhou Yuanwang Fluid Technology Co ltd
Current assignee: Changzhou Yuanwang Fluid Technology Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-10-14

Abstract

The invention belongs to the technical field of plunger pumps, and particularly relates to a miniature plunger pump.

Description

Miniature plunger pump

The technical field is as follows:

the invention relates to the technical field of plunger pumps, in particular to a miniature plunger pump.

Background art:

the plunger pump is an important device of the hydraulic system. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity so as to absorb and press oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like.

In the process production, the required plunger pumps are different, different types of plunger pumps can be used according to different products, and the plunger pumps which are matched with each other can be used when relatively small equipment is manufactured.

The invention content is as follows:

the object of the present invention is to overcome the drawbacks of the prior art by providing a miniature plunger pump that is adaptable to the requirements of the manufacturing of relatively small devices.

The utility model provides a miniature plunger pump, includes power unit and accuse liquid mechanism, power unit sets up on the casing, power unit includes motor, eccentric wheel and bearing, eccentric wheel fixed mounting in the output of motor, the bearing is fixed in through linking up piece off-centre on the eccentric wheel, the motor can drive the eccentric wheel rotation and drive the bearing and do circular motion, accuse liquid mechanism sets up power unit's lower part, accuse liquid mechanism includes plunger, cavity, first check valve and second check valve, first check valve with the second check valve all install in cavity middle part is regional and with the plunger is corresponding, the plunger set up in first check valve with one side of second check valve, the notch has been seted up on the plunger, the bearing imbeds in the notch, the plunger pass through power unit provides power reciprocating in the inside of casing and cavity to realize liquid business turn over through first check valve and second check valve.

In order to facilitate liquid conveying, the first one-way valve and the second one-way valve are respectively communicated with a water inlet end part and a water outlet end part which are arranged at the bottom of the cavity body.

In order to facilitate the reciprocating motion of the driving plunger, the diameter of the bearing is equal to the length of the notch, and the thickness of the bearing is equal to the thickness of the notch.

In order to avoid water leakage of the device, the shell, the water inlet end part and the water outlet end part are hermetically connected with the cavity.

In order to convey liquid in the cavity, the cavity comprises an upper pump body and a lower pump body, a liquid flow channel is arranged in the upper pump body, and a piston cavity is arranged in the middle of the lower pump body.

The miniature plunger pump has the beneficial effects that:

through setting up plunger, motor and eccentric wheel, the eccentric wheel hold in step moves the bearing and carries out the circumferencial rotation, because of the bearing embedding in the plunger, can make the bearing drive the plunger and do reciprocating motion, and then through the reciprocal promotion of plunger, realize the business turn over of liquid.

Description of the drawings:

FIG. 1 is a schematic view of a micro plunger pump according to the present invention;

FIG. 2 is a rear view of the micro-plunger pump according to the present invention;

FIG. 3 is a schematic diagram of the internal structure of the cavity and the housing of the micro plunger pump according to the present invention;

FIG. 4 is a schematic structural view of a first check valve, a second check valve and a valve cavity of the micro plunger pump according to the present invention;

FIG. 5 is a cross-sectional view of a micro plunger pump cavity according to the present invention;

fig. 6 is an exploded view of the micro plunger pump housing, the upper pump body and the lower pump body according to the present invention.

In the figure: 1. a housing; 2. a plunger; 3. a motor; 4. an eccentric wheel; 5. a bearing; 6. a pump body; 601. an upper pump body; 602. a lower pump body; 7. a first check valve; 8. a second one-way valve; 9. a water inlet end portion; 10. and (4) a water outlet end part.

The specific implementation mode is as follows:

the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.

Referring to fig. 1-6, a miniature plunger pump comprises a power mechanism and a liquid control mechanism, wherein the power mechanism is arranged on a shell 1, the power mechanism comprises a motor 3, an eccentric wheel 4 and a bearing 5, the eccentric wheel 4 is fixedly arranged at the output end of the motor 3, the bearing 5 is eccentrically fixed on the eccentric wheel 4 through a connecting block, the motor 3 can drive the eccentric wheel 4 to rotate to drive the bearing 5 to do circular motion, the liquid control mechanism is arranged at the lower part of the power mechanism, the liquid control mechanism comprises a plunger 2, a cavity 6, a first check valve 7 and a second check valve 8, the first check valve 7 and the second check valve 8 are respectively and correspondingly communicated with a water inlet end part 9 and a water outlet end part 10 which are arranged at the bottom of the cavity 6, the first check valve 7 and the second check valve 8 are both arranged in the middle area of the cavity 6 and correspond to a plunger 2, the plunger 2 is arranged at one side of the first check valve 7 and the second check valve 8, a notch is formed in the plunger 2, the bearing 5 is embedded in the notch, the central point of the first check valve 7, the central point of the cavity 6 and the central point of the plunger 2 are on the same horizontal notch, the diameter of the bearing 5, and the thickness of the bearing is equal to facilitate the thickness of the bearing 5 to make the bearing move horizontally.

Plunger 2 provides power through power unit and reciprocates in the inside of casing 1 and cavity 6, casing 1, the tip 9 of intaking and go out water tip 10 all with cavity 6 between be sealing connection, cavity 6 includes pump body 601 and lower pump body 602, go up the inside liquid runner that sets up of pump body 601, pump body 602 middle part is provided with the piston chamber down, and plunger 2 passes the piston chamber, extends to pump body 601 department down, is provided with the rubber circle between the piston chamber at plunger 2 and lower pump body 602 middle part and seals to realize the liquid business turn over through first check valve 7 and second check valve 8, plunger pump structure adopts the disconnect-type design.

The working principle is as follows: the motor 3 drives the eccentric wheel 4 to rotate, the eccentric wheel 4 drives the bearing 5 to rotate circularly, the bearing 5 is embedded into the plunger 2, the bearing 5 drives the plunger 2 to move, the plunger 2 makes linear reciprocating motion, a gap between the plunger 2 and the cavity 6 is provided with proper sealing, when the plunger 2 moves towards a direction far away from the first one-way valve 7 and the second one-way valve 8, the second one-way valve 8 is closed, the first one-way valve 7 is opened, liquid is sucked into a liquid flow passage in the cavity 6 from the water inlet end part 9, when the plunger 2 moves towards the first one-way valve 7 and the second one-way valve 8, the first one-way valve 7 is closed, the second one-way valve 8 is opened, fluid in the cavity 6 is pressed out from the water outlet end part 10, and the plunger 2 does not stop reciprocating motion in the cavity 6 and the shell 1, and the fluid is continuously conveyed into a target mechanism.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention.

Claims

1. The utility model provides a miniature plunger pump, includes power unit and accuse liquid mechanism, its characterized in that: the power mechanism is arranged on the shell (1), the power mechanism comprises a motor (3), an eccentric wheel (4) and a bearing (5), the eccentric wheel (4) is fixedly arranged at the output end of the motor (3), the bearing (5) is eccentrically fixed on the eccentric wheel (4) through a connecting block, the motor (3) can drive the eccentric wheel (4) to rotate to drive the bearing (5) to do circular motion, the liquid control mechanism is arranged at the lower part of the power mechanism and comprises a plunger (2), a cavity (6), a first one-way valve (7) and a second one-way valve (8), the first one-way valve (7) and the second one-way valve (8) are both arranged in the middle area of the cavity (6) and correspond to the plunger (2), the plunger (2) is arranged on one side of the first one-way valve (7) and the second one-way valve (8), notches are formed in the plunger (2), the bearing (5) is embedded into the notches, the plunger (2) provides power for the power mechanism to reciprocate in the cavity (1) and the cavity (6) and the second one-way valve (8) to enter and pass through the second one-way valve (8).

2. The micro-plunger pump of claim 1, wherein: the first one-way valve (7) and the second one-way valve (8) are respectively communicated with a water inlet end part (9) and a water outlet end part (10) which are arranged at the bottom of the cavity (6).

3. The micro plunger pump of claim 1, wherein: the diameter of the bearing (5) is equal to the length of the notch, and the thickness of the bearing (5) is equal to the thickness of the notch.

4. The micro plunger pump of claim 1, wherein: the shell (1), the water inlet end part (9) and the water outlet end part (10) are hermetically connected with the cavity (6).

5. The micro-plunger pump of claim 4, wherein: the cavity (6) comprises an upper pump body (601) and a lower pump body (602), a liquid flow channel is arranged in the upper pump body (601), and a piston cavity is arranged in the middle of the lower pump body (602).