CN101311539A

CN101311539A - Rolling positive displacement fluid pressure device

Info

Publication number: CN101311539A
Application number: CNA200710108079XA
Authority: CN
Inventors: 丁勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-24
Filing date: 2007-05-24
Publication date: 2008-11-26

Abstract

A rolling cubage flow compression device of the invention discloses a liquid compression conveying device which includes a shell (1), a supporting post (2), a rolling ring (3), a rotor (4), a rolling vane (5), a main shaft (6), an upper end cover (7), a lower end cover (8), a flow inlet hole (9), a flow outlet hole (10), a rotor vane slot (11) and a rolling ring vane slot (12). A space combined by the upper end cover (7) and the lower end cover (8) is internally provided with the rotor (4) which can rotate with the main shaft (6), the rolling vane (5) driven by the rotor (4) and the rolling ring (3) which is driven by the rolling vane (5) and rotates in the same direction with the main shaft (6), thus replacing the stator of the cubage type vane pump of a normal liquid compressing device and shortening the friction stroke of the vane, and further reducing the abrasion and energy consumption between workpieces under the same working effect.

Description

Rolling positive displacement fluid pressure device

Technical field

The present invention relates to a kind of fluid compressing device, the compression structure of say so more specifically capacity type vane pump and rotary piston RC engine belongs to fluid compression transportation art respectively.

Background technique

Give an example with capacity type vane pump below: in the FLUID TRANSPORTATION field, in the hydraulic system and pressure system of many machinery, various types of fluid pressure pumps (as plunger pump, air pressure pump, gear pump, capacity type vane pump) are one of indispensable important device wherein.Wherein capacity type vane pump because of its compact structure, operate steadily, unloaded load is little etc., and advantage is used in its fluid compression transporting system (as lathe, automobile etc.) by a lot of machineries.But between the blade of installing in rotating component (rotor) that capacity type vane pump rotates because of its center and the blade groove thereof and the relatively-stationary male part (comprising stator and end cap) of cooperation with it all is relative movement, can wear and tear in these workpiece surface in relative movement, the gap of causing because of wearing and tearing lacks added machinery again, so capacity type vane pump lost efficacy because of wearing and tearing cause to leak easily.Though blade tip wearing and tearing can obtain replenishing of blade self, the blade groove helical pitch is limited, and it is outer or because of the lever principle blade groove that bursts apart to make blade rout up groove when helical pitch is too short, thereby the main workpiece of entire pump is destroyed.So its deficiency of capacity type vane pump is to limit the basic reason of its application area.Set forth the structure and the working principle of capacity type vane pump below in conjunction with accompanying drawing 2.

Common blade pump structure and principle such as Fig. 2, (1) is pump case among the figure, and (2) are stator, and (3) are upper end cap, (4) be lower end cap, (5) be rotor, (6) are blade, and (7) are blade groove, (8) be main shaft, (9) be the low pressure inflow port, (10) are the high head piece that extrudes, and (11) are the stator positioning hole.When rotor (5) rotates in upper end cap (3), lower end cap (4) and stator (2) are connected the pump chamber that forms (as turning clockwise), blade (6) in the rotor vane groove (7) is thrown out of under action of centrifugal force, when stator (2) inwall is arrived on blade (6) top, be designed to the annular pump chamber that width do not wait and be cut off some chambeies section identical with blade (6) quantity, that volume does not wait.Along with the continuation rotation of rotor (5), the volume of each chamber pump constantly changes.When the volume of certain section pump chamber changed from small to big, fluid was subjected to negative pressure, and low pressure inflow port (9) is inspiration fluid under atmospheric pressure just; When the volume of certain section pump chamber from large to small the time, fluid is subjected to compressing and produces pressure and extrude head piece (10) by height and discharge.Thereby reach the purpose that needs in the hydraulic system.Blade groove (7) is stretched out, compressed into to any a slice all once in the blade (6) in the process that rotor (5) rotates a circle.Thereby vane pump is worked again and again.

Apparent vane pump at work, blade is flexible in blade groove to be displacement, blade also is displacement with the pump chamber inwall in pump chamber.In stream was pressed higher pump chamber, the formed frictional force of the motion between this accessory was bigger, has not only caused the energy loss of vane pump, the more important thing is main associated workpiece serious wear and earial drainage so that lose the pressure and the flow of original setting.The patent No. is the wearing and tearing supplementary question that has solved individual pieces in a kind of capacity type vane pump patented technology of 200410094833.5 with band tapering blade and band tapering pump chamber, but manufacture difficulty is bigger, and the blade helical pitch is affected.

I also imagined at blade tip in practice and added a roller, and as Fig. 3, (1) is blade among the figure, and (2) are roller, and (3) are the gap between blade (1) and the roller (2).When blade (1) rotates with rotor, roller (2) periphery and stator (3) inwall begin and can roll, but the gap (3) that roller (2) circle edge cooperates with blade (1) is very undesirable, cross conference and cause earial drainage, cross small leaf (1) and still have sliding friction, only the position has been changed in sliding friction with roller (2).Even the gap is transferred well therebetween, but along with the axle of roller (2) and the wearing and tearing in the hole on the blade (1), the inboard periphery of roller (2) becomes sliding friction to contact with blade, skimming wear begins promptly to exist between roller side and the blade in addition, so the result who researchs and analyses shows that this is a unpractical idea.Therefore the deficiency on the vane pump structure characteristic is the reason that limits its Applicable scope.

Summary of the invention

There is the deficiency of following two aspects in conventional as can be seen capacity type vane pump from accompanying drawing and above-mentioned literary composition in sum.On the one hand, vane pump rotor when work whenever rotates a circle, and all blade tips all can slide a week along stator inner wall, and stretch once in blade groove.The former sliding distance is very long, and the latter only is the former 1/tens, well imagines if therefore save the former its meaning; On the other hand, blade all is sliding friction in the workpiece motion s of contact with it, and force of sliding friction is far longer than force of rolling friction.In sum, rolling positive displacement fluid pressure device of the present invention is started with from two aspects and is solved the deficiency of common blade pump: the one, the stator of conventional capacity type vane pump is changed into the rolling ring of rotation; The 2nd, substitute the blade of conventional capacity type vane pump with rolling element, so just reduced surface friction drag.

Description of drawings

Accompanying drawing 1 is rolling positive displacement fluid pressure device embodiment's one an of the present invention structural drawing.

Accompanying drawing 2 is conventional capacity type vane pump structural drawing.

Accompanying drawing 3 is blade structure figure of band roller.

Embodiment

Embodiment one

Rolling positive displacement fluid pressure device of the present invention comprises housing (1), bearing post (2), rolling ring (3), rotor (4), rolling blade (5), main shaft (6), upper end cap (7), lower end cap (8), flow-in hole (9), flow-out hole (10), rotor vane groove (11), rolling ring blade groove (12).It is characterized in that: the rolling blade (5) that can drive with the rotor (4) and the rotor (4) of main shaft (6) rotation is installed in the space of described upper end cap (7), lower end cap (8) combination, and drive, and the rolling ring (3) that rotates in the same way with main shaft (6) by rolling blade (5).

Rolling positive displacement fluid pressure device of the present invention comprises housing (1), bearing post (2), rolling ring (3), rotor (4), rolling blade (5), main shaft (6), upper end cap (7), lower end cap (8), flow-in hole (9), flow-out hole (10), rotor vane groove (11), rolling ring blade groove (12).It is characterized in that: the rolling blade (5) that can roll is installed in described rotor vane groove (11) and the rolling ring blade groove (12).

Further set forth rolling positive displacement fluid pressure device of the present invention below in conjunction with accompanying drawing 1.(1) is housing among the figure, and (2) are bearing post., (3) are rolling ring, (4) are rotor, (5) be the rolling blade, (6) are main shaft, and (7) are upper end cap, and (8) are lower end cap, (9) be flow-in hole, (10) are flow-out hole, and (11) are rotor vane groove, and (12) are the rolling ring blade groove.Driving rolling ring (3) by rolling blade (5) when main shaft (6) drives rotor (4) rotation rotates in the same way.So its space width that forms does not wait, be separated into chamber section that plurality of sections volume do not wait by some rolling blades (5) because rotor (4) and rolling ring (3) are eccentric the installations between the two this moment.Along with the rotation of rotor (4) and rolling ring (3), wherein the volume of each chamber section constantly changes, influent stream when volume changes from small to big, baric flow in the time of from large to small.When a certain rolling blade (5) revolve with rotor (4) turn around after, baric flow, inhale stream and finish.

Rolling positive displacement fluid pressure device of the present invention structurally has bigger improvement than conventional capacity type vane pump, has good market prospects, will produce good economic benefit in this field.

In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.

Claims

1, rolling positive displacement fluid pressure device of the present invention comprises housing (1), bearing post (2), rolling ring (3), rotor (4), rolling blade (5), main shaft (6), upper end cap (7), lower end cap (8), flow-in hole (9), flow-out hole (10), rotor vane groove (11), rolling ring blade groove (12).It is characterized in that: the rolling blade (5) that can drive with the rotor (4) and the rotor (4) of main shaft (6) rotation is installed in the space of described upper end cap (7), lower end cap (8) combination, and drive, and the rolling ring (3) that rotates in the same way with main shaft (6) by rolling blade (5).

2, upper end cap according to claim 1 (7) derives from high pressure fluid in the power of the last precession of main shaft (6).

3, the power of the precession of upper end cap according to claim 1 (7) on main shaft (6) derives from spring force.

4, rolling positive displacement fluid pressure device of the present invention comprises housing (1), bearing post (2), rolling ring (3), rotor (4), rolling blade (5), main shaft (6), upper end cap (7), lower end cap (8), flow-in hole (9), flow-out hole (10), rotor vane groove (11), rolling ring blade groove (12).It is characterized in that: the rolling blade (5) that can roll is installed in described rotor vane groove (11) and the rolling ring blade groove (12).

5, rolling blade according to claim 4 (5) is polygonal.

6, rolling blade according to claim 4 (5) is to contact rotor (4) and rolling ring (3) simultaneously.