CN2755318Y

CN2755318Y - Small-volume and big-flow pump

Info

Publication number: CN2755318Y
Application number: CN 200420116196
Authority: CN
Inventors: 周小敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-08
Filing date: 2004-12-06
Publication date: 2006-02-01
Anticipated expiration: 2014-12-06

Abstract

The utility model relates to a pump, particularly a new small-volume and big-flow pump which is suitable for liquid or gas media. The utility model is composed of a driving mechanism, a working mold cavity, an input loop and an output loop, and is characterized in that the working mold cavity of the pump is a column-shaped isometric surface body; a rotor, the section of which is elliptical, is arranged in a working mold cavity of the pump, and is connected with the driving mechanism of the pump; the column-shaped isometric surface body is communicated with the input loop and the output loop of the pump. The new small-volume and big-flow pump can greatly improve the work efficiency under the condition of not increasing the volume.

Description

A kind of novel small volume, high-capacity pump

Affiliated technical field: the utility model relates to a kind of pump, particularly is adapted to small volume, the high-capacity pump of liquid or gas medium.

Background technique: existing displacement pump (motor), as gear pump, plunger pump, vane pump, all be each work cycle work once, task performance is low, volume is big, flow is little.

Summary of the invention: the purpose of this utility model provides a kind of novel small volume, high-capacity pump, so that or else increase under the situation of volume, makes the big raising of task performance.

The purpose of this utility model is to realize like this, design a kind of novel small volume, high-capacity pump, it is made up of driving mechanism, work die cavity, input circuit, output loop, and it is characterized in that: the pump work die cavity is a cylindricality equidistant surface body, in the pump work chamber rotor is arranged, the rotor cross section is oval; Rotor is connected with the pump driving mechanism; Cylindricality equidistant surface body is connected with pump input circuit, pump output loop.

The protecgulum of described pump (1) is connected with the pump housing (10) by bolt (18) with bonnet (17); On protecgulum (1) and bonnet (17), bearing (3) and (15) are arranged, on bearing on both sides (3) and the bearing (15) gearwheel (2) and (16) are arranged respectively, eccentric pin shaft (5) is arranged between two gearwheels (2) and (16), oil groove (5a) is arranged on the eccentric pin shaft (5); The two ends of bearing have bearing cap (4) and (14) to play bearing location and sealing.

Two bearings (9) and (11) bearing are arranged on the described pump housing (10), be used for supporting driving shaft (7); Live axle (7) has two small gears (6) and (13), and two small gears (6) and (13) are in transmission connection with live axle (7) by connecting key (8) and (12).

Described pump has three positioning boss (26), (27), (28) on three faces of pump housing die cavity.

Described pump has a chute (21) in the central authorities of rotor (20), and eccentric pin shaft (5) is positioned at chute (21), and eccentric pin shaft (5) slides in chute (21).

Described pump has blade groove (23) on the two sides of rotor (20), and blade (24) and spring (25) are arranged in the blade groove (23), and there is oilhole (22) the blade groove back, and blade slides up and down in blade groove, carries out radial seal and prevents the rotor reversing by blade.

The two sides of the described pump housing (10) is that the end face of two gearwheels (2) and (16) carries out slipper seal.

The utility model has following distinguishing feature:

1, the power of live axle 7 inputs has carried out slowing down for the first time after two

small gears

6 and 13 are transferred to two

gearwheels

2 and 16, has increased moment of torsion.

2, two

gearwheels

2 and 16 and the rotating ratio of oval rotor 20 be 4: 1, this makes that oval rotor slows down once more after slowing down for the first time.Increased moment of torsion, also increased the driving force of pump simultaneously, the pressure of the oil pump of raising has reduced the inertial force and the vibrations of rotor.

3, the die cavity of the pump housing is an equidistant curve, and rotor is done flip-flop movement therein, and this just makes that rotor at any time all can be by rotor pressure on one side pressing between the other two sides tightly, thereby forms self sealing action, has reduced leakage.

4, because moving 60 degree of rotor revolution, the volume before and after the rotor all changes once, does not have idle stroke, and rotor circles and will work 6 times, so the usefulness height is existing plunger pump, vane pump, gear pump 6 times.

5, because the die cavity of the pump housing is consistent with the rotor gabarit, as air pump compression ratio height, exhaust is clean, so the plot ratio height.

The utility model is described in further detail below in conjunction with embodiment's accompanying drawing:

Description of drawings: Fig. 1 is the cavity geometry plotted curve of pump;

Fig. 2 is the rotor shapes plotted curve in the cavity;

Fig. 3 is the plan view of opening behind the protecgulum;

Fig. 4 is the cross section view (rotor does not draw) of equidistant curve pump;

Fig. 5 is the view of removing behind protecgulum and the gear;

Fig. 6 is a pump housing sectional drawing;

Fig. 7 is rotor profiles figure;

Fig. 8 is the rotor sequential chart;

Fig. 9 prevents rotor reversing schematic representation.

Among the figure, 1, protecgulum; 2, gearwheel; 3, bearing; 4, bearing cap; 5, eccentric pin shaft; 5a, oil groove; 6, small gear; 7, live axle; 8, key; 9, bearing; 10, the pump housing; 11, bearing; 12, key; 13, small gear; 14, bearing cap; 15, bearing; 16, gearwheel; 17, bonnet; 18, bolt; 19, first oil circuit; 20, rotor; 21, chute; 22, oilhole; 23, blade groove; 24, blade; 25, spring; 26, positioning boss; 27, second positioning boss; 28, the 3rd positioning boss; 29, second oil circuit; 30, the 3rd oil circuit.

Embodiment: embodiment as shown in Figure 1, it has provided the cavity geometry plotted curve of pump, summit O1, O2, O3 have constituted an equilateral triangle that the length of side is a; Being the center of circle with O1, O2, O3 respectively, is that radius is drawn arc with r and R (R=a+r) respectively again, has just formed an equidistant curve L that width is W=a+2r, is characterized in measuring from all angles, and the width of equidistant curve L all is constants of a W=a+2r.

Fig. 2 be in the cavity the rotor shapes plotted curve as shown in Figure 2, it has provided the rotor shapes plotted curve in the cavity, the length of side that summit O1, O2, O3 and summit O1, O2, O4 have constituted two symmetries is the equilateral triangle of a; Being the center of circle with O1, O2, O3 and O4 respectively, is that radius is drawn arc with r and R (R=a+r) respectively again, has just formed an oval rotor outer profile curve, and its major axis is W=a+2r.

With equidistant curve shown in Figure 1 die cavity,, just constituted equidistant curve pump main body with oval rotor shown in Figure 2 rotor as the equidistant curve pump as the pump housing.Because oval rotor flip-flop movement constantly in the equidistant curve die cavity, the long axis direction of oval rotor contacts with the equidistant curve die cavity of the pump housing all the time, form former and later two seal mutually and volume spaces that constantly change of rotor, make the volume on rotor both sides constantly change and suck liquid (or gas) and get rid of liquid (or gas) control suction and discharge process.

Fig. 3 is the plan view of opening behind the protecgulum, and Fig. 4 is the cross section view of equidistant curve pump, and referring to Fig. 3, Fig. 4, the protecgulum 1 of pump is connected with the pump housing 10 by bolt 18 with bonnet 17; On protecgulum 1 and bonnet 17, bearing 3 and 15 are housed, are separately installed with

gearwheel

2 and 16 on the bearing 3 on both sides and the bearing 15, between two

gearwheels

2 and 16, eccentric pin shaft 5 is installed; Oil groove 5a is arranged on the eccentric pin shaft 5; There are bearing

cap

4 and 14 bearing location in the two ends of bearing and seal.

Two

bearings

9 and 11 bearings are housed on the pump housing 10, are used for supporting driving shaft 7; Live axle 7 has two

small gears

6 and 13 by connecting

key

8 and 12, make two

small gears

6 and 13 and live axle 7 rotate synchronously.

During work, external impetus drives two

small gears

6 and 13 by live axle 7 and rotates, and drives two

gearwheels

2 and 16 by two

small gears

6 and 13 again and rotates.Thereby driving bearing pin 5 rotates around the center of circle.

Fig. 5 is the view of removing behind protecgulum and the gear; Fig. 6 is a pump housing sectional drawing, referring to Fig. 5, Fig. 6 has a cross section on the pump housing 10 be the equidistant curve die cavity, evenly is provided with three positioning boss 26,27,28 on three faces of pump housing die cavity, has three oil circuit roads (or gas circuit road) 19,29,30 at three faces of cavity.Three oil circuit roads (or gas circuit road) 19,27,28 can be connected with one-way valve respectively.Constitute oil-feed loop (or air inlet loop) and go out oil return line (or exhaust loop).

Fig. 7 is rotor profiles figure, referring to Fig. 7 rotor 20 is arranged in the equidistant curve cavity, has a chute 21 in the central authorities of rotor 20, and eccentric pin shaft 5 is positioned at chute 21, and eccentric pin shaft 5 can slide in chute 21.Have blade groove 23 on the two sides of rotor, stud with blade 24 and spring 25 in the blade groove, the blade groove back has oilhole 22, and blade can slide up and down in blade groove, carries out radial seal and prevents the rotor reversing by blade.

Referring to Fig. 5, Fig. 6, because eccentric pin shaft 5 is positioned at the chute 21 of oval rotor 20, and can in chute 21, slide, thereby the rotation of bearing pin 5 will drive oval rotor 20 respectively after center of circle O1 rotates 60 degree, rotate 60 degree around center of circle O2 again, rotate 60 around center of circle O3 more afterwards, go round and begin again and rotate around center of circle O1, O2, O3 successively, make continuous variation of volume on rotor both sides suck liquid (or gas) and get rid of liquid (or gas).

When eccentric pin shaft 5 slided in rotor rollaway nest 21, the effect of oil groove 5a was the spatial communication that makes rotor rollaway nest 21 two sides, prevents entrap phenomenon.

Fig. 9 prevents rotor reversing schematic representation, is to increase the sealing between the rotor and the pump housing and prevent the rotor reversing referring to the effect of Fig. 9 rotor blade; Overlap with the side of the pump housing to the side at rotor motion, when eccentric pin shaft 5 is positioned at chute 21 middle, for preventing that rotor from producing reversing, on pump housing die cavity, evenly be provided with three positioning boss 26,27,28, blade 24 in the rotor vane groove is under the elastic force effect of spring 25, press to pump housing die cavity tightly, must there be a blade to be arranged in positioning boss 26 on its rotor, make rotor to rotate around O2, and can not reverse around O1, so just limited rotor and produced reversing, making rotor just to keep changes.

Fig. 8 is the rotor sequential chart, is 4: 1 referring to the rotating ratio of Fig. 8 eccentric pin shaft 5 and oval rotor 20; Be eccentric pin shaft 5 revolutions 240 degree, oval rotor 20 changes 60 degree.

The two sides of the pump housing 10 adopts the end face of two

gearwheels

2 and 16 to carry out slipper seal.

Because three faces at the pump housing have three asphalt channels (or gas channels) 19,29,30.Three asphalt channels (or gas channels) are connected with one-way valve respectively.Constitute oil-feed loop (or air inlet loop) and go out oil return line (or exhaust loop).

Adopt the utility model structure also to be easy to make hydraulic pressure or pneumatic motor, as long as fuel feeding or air feed loop are given pump housing die cavity fuel feeding or air feed successively.

Claims

1, a kind of novel small volume, high-capacity pump, it is made up of driving mechanism, work die cavity, input circuit, output loop, and it is characterized in that: the pump work die cavity is a cylindricality equidistant surface body, in the pump work chamber rotor is arranged, and the rotor cross section is oval; Rotor is connected with the pump driving mechanism; Cylindricality equidistant surface body is connected with pump input circuit, pump output loop.

2, a kind of novel small volume according to claim 1, high-capacity pump is characterized in that: the protecgulum of pump (1) is connected with the pump housing (10) by bolt (18) with bonnet (17); On protecgulum (1) and bonnet (17), bearing (3) and (15) are arranged, on bearing on both sides (3) and the bearing (15) gearwheel (2) and (16) are arranged respectively, eccentric pin shaft (5) is arranged between two gearwheels (2) and (16), oil groove (5a) is arranged on the eccentric pin shaft (5); The two ends of bearing have bearing cap (4) and (14) to play bearing location and sealing.

3, a kind of novel small volume according to claim 1, high-capacity pump is characterized in that: two bearings (9) and (11) bearing are arranged on the pump housing (10), be used for supporting driving shaft (7); Live axle (7) has two small gears (6) and (13), and two small gears (6) and (13) are in transmission connection with live axle (7) by connecting key (8) and (12).

4, a kind of novel small volume according to claim 1, high-capacity pump is characterized in that: on three faces of pump housing die cavity three positioning boss (26), (27), (28) are arranged.

5, a kind of novel small volume according to claim 1, high-capacity pump is characterized in that: there is a chute (21) in the central authorities at rotor (20), and eccentric pin shaft (5) is positioned at chute (21), are slidingly connected with chute (21).

6, a kind of novel small volume according to claim 1, high-capacity pump, it is characterized in that: blade groove (23) is arranged on the two sides of rotor (20), blade (24) and spring (25) are arranged in the blade groove (23), there is oilhole (22) the blade groove back, blade slides up and down in blade groove, so that blade carries out radial seal and prevents the rotor reversing.

7, a kind of novel small volume according to claim 1, high-capacity pump is characterized in that: the two sides of the pump housing (10) is that the end face of two gearwheels (2) and (16) carries out slipper seal.