CN103835988A

CN103835988A - Centrifugal pump impeller

Info

Publication number: CN103835988A
Application number: CN201410085157.9A
Authority: CN
Inventors: 门立山
Original assignee: Individual
Current assignee: Dezhou University
Priority date: 2014-03-11
Filing date: 2014-03-11
Publication date: 2014-06-04
Anticipated expiration: 2034-03-11
Also published as: CN103835988B

Abstract

A centrifugal pump impeller comprises an impeller disc and a plurality of blades. A round groove is formed in the middle of the impeller disc, a round ring with teeth on one inner side face is placed in an annular groove, one side with the teeth of the inner side face of the round ring is meshed with a small gear, screw holes identical in number are uniformly distributed on the round ring and at the edge of the impeller disc, two holes are arranged at two ends of each blade, and one end of each blade is fixed on the impeller disc while the other end of the same is fixed on the round ring with the teeth on the inner side face. Each blade can extend and contract but cannot disjoint. The round ring can be rotated by rotating the small gear, and then length of each blade can be changed, and mounting angle of each blade at an impeller inlet and an impeller outlet can be changed. The centrifugal pump impeller has the advantages that the blades of a centrifugal pump can be adjusted, so that performance of the centrifugal pump can be adjusted.

Description

A kind of centrifugal pump impeller

Technical field

The present invention relates to a kind of centrifugal pump impeller, belong to Thermal Energy and Power Engineering equipment part.

Background technique

The most frequently used pump is centrifugal pump, is secondly axial-flow pump, the working principle difference of the two.The two has impeller, has blade on impeller, and the mounting point (for example stagger angle, exit installation angle) of blade on impeller and lift of pump, discharge relation are very large.Theoretical lift of centrifugal pump formula is:

Figure DEST_PATH_575859DEST_PATH_DEST_PATH_IMAGE001

.In formula, β 1, β 2 are respectively the established angle of blade in impeller inlet, outlet, and this formula has reflected the quantitative relationship of leaf position and lift.In order to meet the needs of different lifts, flow, rotating speed, power, early there is axial-flow pump to produce that blade can regulate.But centrifugal pump does not also have blade adjustable.

Summary of the invention

The object of the invention is: the centrifugal pump impeller that a kind of adjustable vane is provided.

The technical solution adopted for the present invention to solve the technical problems is: a kind of centrifugal pump impeller, include the impeller plate, some blades, there is a circular groove centre of the described impeller plate, there is the toothed annulus of an inner side surface to be placed in annular groove, the toothed one side of described annulus inner side surface engages with a small gear, on described annulus and described impeller plate edge by the distributing screw hole of equal number of even angle, there are two holes at the two ends of each blade, there are two screws through two holes on blade, blade order to be arranged in the screw hole at described annulus and described impeller plate edge.Described blade is inlayed, is connected to form successively with the rectangle block of convex slot is relative with rectangle block convex-concave with Baltimore groove by some, between convex slot and Baltimore groove, there is little gap, in the groove of described convex slot, an edge is all breach except two ends, and there is damp block at the local two ends of the corresponding Baltimore groove of described breach.There is a through hole in the center of circle of described small gear, being shaped as of described through hole: top is inner hexagonal hole, and below is small sircle hole, has a screw that described small gear is fixed on the described impeller plate in described small sircle hole.On the described impeller plate, have several blocking blades, a part for each blocking blade is pressed on described annulus, and another part is fixed on the described impeller plate by a screw.The quantity of the described impeller plate can be 1-2.Working principle of the present invention is: the length of blade can be extended, be shortened; Except two ends, be all breach by an edge in the groove of convex slot, the local two ends of the corresponding Baltimore groove of described breach have damp block just to ensure that each rectangle block can not disconnect; One end of blade is fixed on the impeller plate, and the other end is fixed on inner side and wears on tooth annulus, and by rotation pinion, just energy tumbler ring, thereby the length of change blade, change the established angle of blade in impeller inlet, outlet.Can rotation pinion by suitable interior hex tool, can fix tight small gear by the screw in locking small gear.The effect of described blocking blade is in order to prevent coming off of described annulus.If the quantity of the described impeller plate can be 1, the impeller of formation is semiclosed impeller; If the quantity of the described impeller plate can be 2, the impeller of formation is totally-enclosed impeller.

The invention has the beneficial effects as follows, the invention has the beneficial effects as follows, the blade of centrifugal pump can regulate, thereby centrifugal pump performance can regulate.

Brief description of the drawings

Fig. 1 is one of pattern of structure principle chart of the present invention, and the blade angle in figure is less.

Fig. 2 be structure principle chart of the present invention pattern two, the blade angle in figure is larger.

Fig. 3 is the plan view of small gear.

Fig. 4 is the structure principle chart of the present invention while being 2 impeller plates.

1. impeller plates in figure, 2. annulus, 3. small gear, 4. blade, 5. with the rectangle block of convex slot, 6. with the rectangle block of Baltimore groove, 7. screw, 8. blocking blade.

Embodiment

Below in conjunction with accompanying drawing, the present invention is further described.

Fig. 1 is one of pattern of structure principle chart of the present invention, there is a circular groove centre of the impeller plate 1, there is the toothed annulus 2 of an inner side surface to be placed in annular groove, the toothed one side of annulus 2 inner side surface engages with a small gear 3, on the impeller plate 1, have 6 blades 4, blade 4 is connected to form with the rectangle block 5 of convex slot with the rectangle block 6 of Baltimore groove successively by some.With the rectangle block 5 of convex slot with see that with the sectional drawing of the rectangle block 6 of Baltimore groove shown in the upper right of Fig. 1, the length of blade 4 can be extended, be shortened.There are two holes at the two ends of each blade 4, and screw 7 is arranged on blade order in the screw hole of annulus 2 and impeller 1 plate edge through two holes on blade.The plan view of small gear 3 as shown in Figure 3, has a through hole in the center of circle of small gear 3, being shaped as of described through hole: top is inner hexagonal hole, and below is small sircle hole.In small sircle hole, there is a screw that small gear 3 is fixed on the impeller plate 1.On the impeller plate 1, have several blocking blades 8, the effect of blocking blade 8 is in order to prevent coming off of annulus 2.In using when hex tool rotation pinion 3, just can tumbler ring 2, thus change blade is at the established angle of impeller inlet, outlet, is Fig. 2 shape by Fig. 1 alteration of form.The screw of locking in small gear 3 by screw-driver can be fixed tight small gear.When practical operation, the hex tool and the screw-driver that reach in small gear 3 can be by make a call to a screw hole on pump case, and realization need not be dismantled pump debugging blade angle.Impeller shown in Fig. 1 is semiclosed impeller.If increase an impeller plate, the shape of impeller just becomes shape shown in Fig. 4 again, and such impeller is totally-enclosed impeller, and the top of this impeller is water intake, and below and axle are fixed, and so totally-enclosed impeller application is more.

Claims

1. a centrifugal pump impeller, include the impeller plate, some blades, it is characterized in that: there is a circular groove centre of the described impeller plate, there is the toothed annulus of an inner side surface to be placed in annular groove, the toothed one side of described annulus inner side surface engages with a small gear, on described annulus and described impeller plate edge by the distributing screw hole of equal number of even angle, there are two holes at the two ends of each blade, have two screws through two holes on blade, blade order to be arranged in the screw hole at described annulus and described impeller plate edge.

2. a kind of centrifugal pump impeller according to claim 1, it is characterized in that: described blade is relatively inlayed, connected to form successively with the rectangle block of Baltimore groove and rectangle block with convex slot are concavo-convex by some, between Baltimore groove and convex slot, there is little gap, in the groove of described convex slot, an edge is all breach except two ends, and there is damp block at the local two ends of the corresponding Baltimore groove of described breach.

3. a kind of centrifugal pump impeller according to claim 1, it is characterized in that: there is a through hole in the center of circle of described small gear, being shaped as of described through hole: top is inner hexagonal hole, below is small sircle hole, has a screw that described small gear is fixed on the described impeller plate in described small sircle hole.

4. according to a kind of centrifugal pump impeller described in claim 1,2, it is characterized in that: on the described impeller plate, have several blocking blades, a part for each blocking blade to be pressed on described annulus, another part is fixed on the described impeller plate by a screw.

5. according to a kind of centrifugal pump impeller described in claim 1,2, it is characterized in that: the quantity of the described impeller plate can be 1-2.