CN201437774U

CN201437774U - Rolling friction vane pump

Info

Publication number: CN201437774U
Application number: CN 200920121767
Authority: CN
Inventors: 俞朝杰
Original assignee: Zhejiang Toman Precision Machinery Co Ltd
Current assignee: Zhejiang Toman Precision Machinery Co Ltd
Priority date: 2009-06-11
Filing date: 2009-06-11
Publication date: 2010-04-14
Anticipated expiration: 2019-06-11

Abstract

The utility model provides a rolling friction vane pump which belongs to the technical field of a hydraulic pump. The present vane pump has the disadvantage of severe abrasion. The rolling friction vane pump comprises a rotor, a stator, a vane, a transmission shaft, a front flow distribution disc and a rear flow distribution disc. An arc-shaped groove is arranged at the top face of the vane, a rolling column which can rotate is arranged in the arc-shaped groove, the transverse width at the opening part of the groove is smaller than the diameter of the rolling column, and the depth of the groove is larger than the semi-diameter of the rolling column and is smaller than the diameter of the rolling column. By using the above structure of rolling friction, the abrasion of the vane pump can be effectively lessened and the service life of the vane pump can be prolonged.

Description

A kind of rolling friction vane pump

Technical field

The utility model belongs to the oil hydraulic pump technical field, and is especially relevant with a kind of rolling friction vane pump.

Background technique

Vane pump belongs to oil hydraulic pump, is that a kind of the rotation by rotor makes the swept volume of a single chamber space change reach the oil hydraulic pump of carrying liquid.Divide from the use field, vane pump has polytype, and wherein automobile assisted power steering oil hydraulic pump, automobile rotary vane compressor pump, industrial vane pump etc. are more several; Divide from structural type, can be divided into single acting vane pump and double-acting vane pump.The traditional blades pump mainly is made up of rotor, stator, blade, transmission shaft and former and later two thrust plates.Stator has inner chamber, and single acting vane pump bore of stator bus is circle, and rotor is fixedly installed in transmission shaft and off-centre is arranged at bore of stator; And the bore of stator bus of double-acting vane pump to be four arcs be equipped with non-circular curve that four sections transition curves constitute, rotor axis overlaps with the stator center line.Rotor upper edge circumference has some radial rectangle grooves, blade places rectangle groove and can radially slide along rectangle groove, forward and backward thrust plate is installed on the stator two ends respectively bore of stator is sealed, during rotor rotation, blade radially outward under centrifugal force and hydraulic pressure slides, blade is closely contacted with stator inner surface, and rotor periphery, stator inner surface, thrust plate end face and adjacent two blade surfaces constitute the working room.The rotating band moving vane of rotor is forced in the rectangle groove with the variation of stator inner surface curve and radially reciprocatingly slides, and makes the volume of working room change.Each thrust plate is provided with liquid supplying port, and the liquid supplying port that links to each other with the little working room of volume is a delivery outlet, and the liquid supplying port that links to each other with capacious working room is an input hole.Because in the rotor rotation process, blade tip contact with stator inner surface all the time, blade all the time with the stator inner surface sliding friction, make the wearing and tearing of blade and stator greatly, shortened working life.

The model utility content

The purpose of this utility model is exactly to overcome the big defective of existing vane pump wearing and tearing, provides a kind of and can effectively reduce wearing and tearing, improves the rolling friction formula vane pump in the working life of pump.For this reason, the utility model is by the following technical solutions:

A kind of rolling friction vane pump, comprise rotor, stator, blade, transmission shaft and former and later two thrust plates, it is characterized in that: described blade end face is provided with arc groove, be provided with rotary roller in the groove, make the sliding friction of blade and stator inner surface become the rolling friction of roller and stator inner surface.

During the utility model work, transmission shaft is connected by rotating power source with rotating power source provides rotating power, the thrust plate input hole is communicated with fluid supply by pipe, transmission shaft drives the rotor rotation, blade radially outward under centrifugal action slides, roller is closely contacted with stator inner surface, the rotor periphery, stator inner surface, roller on thrust plate end face and adjacent two blade surfaces and the blade constitutes the working room, the rotating band moving vane of rotor is forced in the rectangle groove with the variation of stator inner surface curve and radially reciprocatingly slides, the volume of working room changes, drain when swept volume of a single chamber diminishes, suck liquid when swept volume of a single chamber becomes big, play the conveying liquid functional.

As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:

Described groove oral area horizontal width is less than the diameter of roller, and depth of groove makes roller can not deviate from from groove greater than the roller radius and less than the roller diameter.

Use the utility model can reach following beneficial effect: by on the blade of vane pump, roller being set, to say that sliding friction changes rolling friction into, reduced wearing and tearing, improved vane pump working life.

Description of drawings

Fig. 1 is the structural representation of the utility model master apparent direction.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the B-B sectional view of Fig. 1.

Fig. 4 is the C-C sectional view of Fig. 1.

Fig. 5 is the partial enlarged drawing at a place among Fig. 3.

1, rear thrust plate, 2, stator, 3, front thrust plate, 4, transmission shaft, 5, roller, 6, blade, 7, rotor, 8, delivery outlet, 9, input hole, 10, groove.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the utility model comprises rotor 7, stator 2, blade 6, transmission shaft 4, roller 5, front thrust plate 3 and rear thrust plate 1, stator 2 has inner chamber, rotor 7 is fixedly installed in transmission shaft 4 and the eccentric inner chamber that is arranged at stator 2, rotor 7 upper edge circumference have some radial rectangle grooves, blade 6 places rectangle groove and can radially slide along rectangle groove, front thrust plate 3 and rear thrust plate 1 are installed on the inner chamber sealing of stator 2 two ends with stator 2 respectively, blade 6 end faces are provided with arc groove 10, be provided with rotary roller 5 in the groove 10, groove 10 oral area horizontal widths are less than the diameter of roller 5, the degree of depth of groove 10 is greater than the radius of roller 5 and less than the diameter of roller 5, rotor 7 peripheries, stator 2 internal surfaces, the end face of front thrust plate 3 and rear thrust plate 1, roller 5 on adjacent two blade surfaces and the blade constitutes the working room, all be provided with liquid supplying port on front thrust plate 3 and the rear thrust plate 1, the liquid supplying port that links to each other with the little working room of volume is a delivery outlet 8, and the liquid supplying port that links to each other with capacious working room is an input hole 9.

During the utility model work, transmission shaft 4 is connected by rotating power source with rotating power source provides rotating power, thrust plate input hole 9 is communicated with fluid supply by pipe, transmission shaft 4 drives rotor 7 rotations, blade 6 radially outward under centrifugal action slides, roller 5 is closely contacted with stator 2 internal surfaces, the rotating band moving vane 6 of rotor 7 is forced in the rectangle groove with the variation of stator 2 internal surface curves and radially reciprocatingly slides, the volume of working room changes, drain when swept volume of a single chamber diminishes, suck liquid when swept volume of a single chamber becomes big, play the conveying liquid functional.

Claims

1. rolling friction vane pump, comprise rotor (7), stator (2), blade (6), transmission shaft (4), front thrust plate (3) and rear thrust plate (1), it is characterized in that: the end face of described blade (6) is provided with arc groove (10), is provided with rotary roller (5) in the groove (10).

2. a kind of rolling friction vane pump according to claim 1 is characterized in that: described groove (10) oral area horizontal width is less than the diameter of roller (5), and groove (10) degree of depth is greater than roller (5) radius and less than roller (5) diameter.