CN1159528C

CN1159528C - Isowidth-curve double-stator roller pump

Info

Publication number: CN1159528C
Application number: CNB021444064A
Authority: CN
Inventors: 闻德生
Original assignee: Yanshan University
Current assignee: Yanshan University
Priority date: 2002-09-25
Filing date: 2002-09-25
Publication date: 2004-07-28
Anticipated expiration: 2022-09-25
Also published as: CN1403712A

Abstract

The present invention relates to a liquid machine with variable capacity, particularly to a liquid machine with variable capacity which can be used as a pump or a motor. The present invention is characterized in that the outer surface curve of an inner stator (1) and the inner surface curve of an outer stator (3) are two identical smooth closed curves; the difference of the radius of curvature of the curve of the outer stator (3) and the radius of curvature of the curve of the inner stator (1) is a constant; a rotor (2) is a circular ring, and 4 to 100 roller groups are distributed on the rotor (2); each roller group is formed from an outer roller body (8), a connecting rod (7) and an inner roller body (6). The pump has the advantages of novel design, stable work, high efficiency, long service life and no bending moment on input shafts, and be used as a pump or a motor.

Description

The equal-width curve double-stator roller pump

Technical field

The present invention relates to a kind of fluid varactor machine, particularly relate to a kind of fluid varactor machine that promptly can be used as motor again as the pump use.

Background technique

Oil hydraulic pump is widely used in all trades and professions as a kind of increasingly mature product.Major part major part in the present oil hydraulic pump (comprising gear pump, vane pump, plunger pump, screw pump) all is in the sliding friction state, and a lot of places are arranged is line contact sliding frictions, and therefore, be restricted actual life; And, when using, must add the backhaul spring it is resetted as motor, in to-and-fro motion repeatedly, spring can produce fatigue ruption, thereby also can reduce the working life of motor.Above shortcoming has also influenced the development of hydraulic element simultaneously.The oil hydraulic pump major part is single output, exports lessly more, and can not export a plurality of flows according to a certain percentage on same pump.

Summary of the invention

The object of the present invention is to provide a kind of equal-width curve double-stator roller pump, this pump modern design, stable working, efficient height, life-span are long, do not have moment of flexure on the input shaft, both can be used as pump and also can be used as motor and use.

This equal-width curve double-stator roller pump, comprise inner stator 1, external stator 3, oil outlet 4, filler opening 5 and two side plates, it is characterized in that: inner stator 1 outer surface curve and external stator 3 internal surface curves are two identical smooth closed curves, the difference of external stator 3 curve curvature radius and inner stator 1 curve curvature radius is a constant, two identical smooth closed curves of described external stator 3 and inner stator 1: this curve is an elliptic curve, two part great circles by the transition curve connection, the smooth closed curve that roundlet is formed, the smooth closed curve that joint, regular polygon both sides is connected by transition curve, its transition curve is a constant acceleration curve, add correction Deng deceleration curve and sinusoidal curve; When external stator 3 and inner stator 1 curve were two concentric circles, must there be an eccentric distance e in the center of roller stand 2 and above-mentioned two concentrically ringed centers of circle; Roller stand 2 is annulus, a uniform 4-100 group of rollers on it, group of rollers constitutes by outer roller body 8, connecting rod 7 and interior roller body 6, and connecting rod 7 is the square-section, there is the spill circular arc at its two ends, and the radius of spill circular arc is equal to or greater than the radius of outer roller body 8 and interior roller body 6.Described group of rollers can be made into no connecting rod, can place blade and roller body in the groove of roller stand 2 placement group of rollers; When placing roller body, can place 1-2 roller body in each groove; 1-4 group equal-width curve double-stator roller pump can be set in the inside of external stator 3 and inner stator 1, so just can be made into radially twin-stage and multistage equal-width curve double-stator roller pump.

Description of drawings

Fig. 1 is the structural representation of the two stator roller pumps of wide circular order

Fig. 2 is the structural representation of the two stator roller pumps of wide elliptic curve

Fig. 3 is the structural representation of the two stator roller pumps of multistage wide elliptic curve

Fig. 4 is the structural representation of the two stator roller pumps of wide triangle curve

Fig. 5 is the structural representation that the two stator roller pumps of 2 wide circular orders of roller body are housed

Fig. 6 is the structural representation that the two stator roller pumps of wide circular order of blade are housed

Fig. 7 is the structural representation that the two stator roller pumps of 1 wide circular order of roller body are housed

In Fig. 1,1 is inner stator, and 2 is roller stand, and 3 is external stator, and 4 is oil outlet, and 5 is filler opening, and 6 is that

interior roller

6,7 is a connecting rod, and 8 is outer roller.

Embodiment

Accompanying drawing 1 is embodiment's (see figure 1) disclosed by the invention, inner stator 1 is a concentric circle with external stator 3, and be fastenedly connected and become one, roller stand 2 is an annulus, between itself and inner stator 1 and the external stator 3 off-centre is arranged, be evenly distributed several group of rollers on roller stand 2, each group of rollers comprises interior roller 6, outer roller 8, connecting rod 7.When roller stand 2 (can be described as rotor here) with center of circle when rotation of group of rollers round oneself, the volume that inward flange surrounded (can be considered interior pump) by the outward edge of inner stator 1, interior roller 6, connecting rod 7, roller stand 2, and by the volume that outward edge surrounded (can be considered outer pump) of the inward flange of external stator 3, outer roller 8, connecting rod 7, roller stand 2 all in the variation of generating period, can carry out oil suction and press oil.At this moment group of rollers is done relative to-and-fro motion in roller stand 2.By Fig. 1 we as can be seen, when by the volume that outward edge surrounded (outer pump) of the inward flange of external stator 3, outer roller 8, connecting rod 7, roller stand 2 during in oil suction, the volume that inward flange surrounded (interior pump) by the outward edge of inner stator 1, interior roller 6, connecting rod 7, roller stand 2 is being pressed oil, otherwise also sets up.Therefore, when rotating under the driving of roller stand 2 at input shaft, just realize the working principle of the twin roller pump that double pump is worked simultaneously, and exported a plurality of proportional flows.When using as motor, also need not to use retracting spring, because having limited group of rollers, the inward flange of the outward edge of inner stator 1 and external stator 3 must move reciprocatingly for 2 li at roller stand.When changing roller stand 2 eccentric, just can change the flow of pump, but two constant rates that pump is exported.

Claims

1, a kind of equal-width curve double-stator roller pump, comprise inner stator (1), external stator (3), oil outlet (4), filler opening (5) and two side plates, it is characterized in that: inner stator (1) outer surface curve and external stator (3) internal surface curve are two identical smooth closed curves, the difference of external stator (3) curve curvature radius and inner stator (1) curve curvature radius is a constant, roller stand (2) is an annulus, a uniform 4-100 group of rollers on it, group of rollers is by outer roller body (8), connecting rod (7) and interior roller body (6) constitute, described group of rollers can be made into no connecting rod, can place blade and roller body in the groove of roller stand (2) placement group of rollers; When placing roller body, place 1-2 roller body in each groove; 1-4 group equal-width curve double-stator roller pump can be set in the inside of external stator (3) and inner stator (1), so just can be made into radially twin-stage and multistage equal-width curve double-stator roller pump; When roller stand (2) with center of circle when rotation of group of rollers round oneself, the volume that inward flange surrounded by the outward edge of inner stator (1), interior roller (6), connecting rod (7), roller stand (2), and by the volume that outward edge surrounded of the inward flange of external stator (3), outer roller (8), connecting rod (7), roller stand (2), all, can carry out oil suction and press oil in the variation of generating period.

2, equal-width curve double-stator roller pump according to claim 1, it is characterized in that: external stator (3) and inner stator (1) are two identical smooth closed curves: this curve is an elliptic curve, the smooth closed curve that two part great circles, roundlets that connected by transition curve are formed, the smooth closed curve that joint, regular polygon both sides is connected by transition curve, its transition curve be constant acceleration curve, etc. deceleration curve and sinusoidal curve add correction; When external stator (3) and inner stator (1) curve were two concentric circles, must there be an eccentric distance e in the center of roller stand (2) and above-mentioned two concentrically ringed centers of circle.

3, equal-width curve double-stator roller pump according to claim 1 is characterized in that: connecting rod (7) is the square-section, and there is the spill circular arc at its two ends, and the radius of spill circular arc is equal to or greater than the radius of outer roller body (8) and interior roller body (6).