CN202203163U

CN202203163U - Centrifugal impeller structure

Info

Publication number: CN202203163U
Application number: CN2011203437356U
Authority: CN
Inventors: 李茂碷; 李承恩
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-14
Filing date: 2011-09-14
Publication date: 2012-04-25
Anticipated expiration: 2021-09-14

Abstract

The utility model relates to a centrifugal impeller structure comprising a wheel seat, a plurality of wheel plates and a hoop, wherein the wheel seat is an arc cone-shaped seat body; a shaft hole is formed in the axle center of the wheel seat; the wheel plates are thin toric curved wing blades, and are arranged on the outer surface of the wheel seat radially; the outer surface of the wheel seat is divided into a plurality of airflow channels; the hoop is connected to the outer edges of the wheel plates in a circling manner, and is a ring body near an air intake end; and the outer edges of the wheel plates are connected with and supported by one another through the hoop. The centrifugal impeller structure has the advantages that the wax patterns of the wheel plates are formed through a die, and the hoop is arranged on the outer edges at the air intake ends of the wheel plates to fixedly hold the outer edges at the air intake ends of the wheel plates, so that during precision lost wax casting processing, the wheel plates are supported, stabilized and prevented from leaning. Meanwhile, a well cast centrifugal impeller also can reinforce the overall structural strength of the wheel plates through the hoop, and the overall production efficiency and the output are improved, so that the manufacture cost is reduced.

Description

The centrifugal impeller structure

Technical field

The relevant a kind of centrifugal impeller structure of the utility model refers to a kind of centrifugal impeller structure that cooperates accurate lost wax casting processing procedure to be designed especially.

Background technique

The centrifugal impeller that existing technology disclosed; It is mainly got a slug and is processed into multiaxis CNC toolroom machine, and because of saying for complex-curved workpiece such as this type of centrifugal impeller, helical blades, three CNC toolroom machines of tradition have seemed not apply and used; And multiaxis CNC toolroom machine can handle general three axis processing machines the special formed and curved surface that can't cut; Like above-mentioned centrifugal impeller, its curvature changing is violent, and precision prescribed is high; And have wheel blade machining interference problem, this all is to cause the difficulty of utilizing three processing.

In multiaxis machine tool, most typical is five CNC toolroom machines, and compared to three toolroom machines, maximum not existing together is exactly its many two running shaft.The multiaxis machine tool that contains running shaft is superior to three toolroom machine parts and is, during processing curve, can obtain preferable precision with the short time, and can handle the special surface that three toolroom machines institute can't process, the time of minimizing workpiece loading and unloading.Three toolroom machines of general using add man-hour, cutter keep a stationary axle to, when complex geometric shapes such as processing, can can't cut because of the interference of cutter and collision.For the processing of five toolroom machines, because many two running shafts make the axial selection of tool motion that bigger degrees of freedom arranged.

Yet for utilize five CNC toolroom machines to accomplish for the centrifugal impeller overall process with a block of metal bulk, it still has problems such as the processing time-histories is long, manufacture cost can't reduce.Therefore, have the people to adopt accurate lost wax casting technology to make centrifugal impeller in the existing technology, hope can be broken away from long, the manufacture cost of processing time-histories and cross the problem that high unfavorable production capacity requires.But; The centrifugal impeller that becomes with accurate lost wax casting fabrication techniques is because of the very slim fragility of the wax-pattern structure of its wheel blade, so then needs are more careful when founding, being stained with operation such as slurry in the group of wheel blade wax-pattern; To prevent that problems such as wheel blade is crooked in the processing procedure, collision is burst apart from producing, and causes up-to-standard rate wayward.In addition; After the centrifugal impeller casting; Wheel blade intensity also can be subject to the factor of casting processing procedure, and a little less than with the made wheel blade intensity of direct cutting (nearly 2 one-tenth difference is arranged), so relatively poor with the wheel blade overall mechanical properties of the centrifugal impeller of casting.

Summary of the invention

In view of this, the purpose of the utility model is to provide a kind of centrifugal impeller structure, so that centrifugal impeller has strengthening structure intensity, simplifies processing procedure etc. and be fit to a large amount of production and the industrial advantages that reduce manufacture cost.

For achieving the above object, the utility model provides a kind of centrifugal impeller structure, and it comprises a wheel seat, a plurality of wheel blade and a hoop, and wherein, said wheel seat is the arc subulate pedestal, and its place, axle center has an axis hole; Said wheel blade is the slim blade of the toric curved wing; It takes shape in the wheel seat outer surface with radial arrangement; And be separated out a plurality of air-flow channels in the outer surface region of wheel seat, and around the wheel seat bit point, form an air intake, and around the wheel seat the other end, form an outlet air end; Said hoop is for around being connected the wheel blade outer rim and being close to the ring body of air intake, and the outer rim of wheel blade links to each other through hoop and supports each other.

As preferred version, wherein said hoop is an oblique surface towards the end face of wheel blade air intake.

As preferred version, the external loop diameter of wherein said hoop is equal to or less than the wheel blade girth diameter with cross-sectional height.

As preferred version, the bottom end inside of wherein said wheel seat is provided with the multiple tracks ribs.

The centrifugal impeller structure that the utility model provided; Can adopt the molded wax-pattern that goes out this wheel blade of mould; Be located at the fixing effectiveness of wheel blade air intake outer rim again through this hoop frame; The vane construction intensity of centrifugal impeller is significantly promoted, and production efficient and output raising, thereby the effect that reduces manufacture cost had.

Description of drawings

Fig. 1 is the stereoscopic schematic representation of the utility model;

Fig. 2 is the combination generalized section of the utility model;

Fig. 3 is the wax-pattern exploded perspective schematic representation of the utility model;

Fig. 4 joins schematic representation for the wax-pattern piece of this hoop in the utility model;

Fig. 5 is the combination plan structure schematic representation of the utility model.

The critical piece title:

Wheel seat-1; Axis hole-11; Ribs-12; Caulking groove-13;

Wheel blade-2; Air-flow channel-21; Air intake-22; Outlet air end-23; Notch-24;

Hoop-3; Oblique surface-31;

External loop diameter-d1; Wheel blade girth diameter-d2.

Embodiment

In order further to understand the characteristic and the technology contents of the utility model, see also following detailed description and accompanying drawing, yet following accompanying drawing and embodiment only provide the usefulness of reference with explanation about the utility model, be not to be used to limit the utility model.

Like Fig. 1 and shown in Figure 2; The centrifugal impeller structural design of the utility model; Its preferred embodiment comprises a wheel seat 1, a plurality of wheel blade 2 and a hoop 3, and wheel seat 1, wheel blade 2 and hoop 3 adopt accurate lost wax casting mode one-body molded, and wherein: wheel seat 1 be the arc subulate pedestal of circle; Its place, axle center is provided with an axis hole 11, makes wheel seat 1 form power through axis hole 11 and line shaft (for example motor reel) and is connected.Said wheel blade 2 is the slim blade of the toric curved wing; It takes shape in the outer surface of wheel seat 1 with radial arrangement; Be separated out a plurality of air-flow channels 21 with outer surface region at wheel seat 1; And around wheel seat 1 bit point, form an air intake 22, and wheel seat 1 the other end around form an outlet air end 23, and the leaf fabric width degree of each wheel blade 2 by air intake 22 from big to extending to outlet air end 23 for a short time; Centrifugal action during capable of using rotate like this makes air-flow get into air-flow channels 21 and from being flowed out by outlet air end 23 from air intake 22.

The utility model is characterised in that: hoop 3 aims to provide the cured film positioning supports of each wheel blade 2 in accurate lost wax casting operation; Make the cured film of wheel blade 2 that bad phenomenon such as crooked, that collision is burst apart can not take place; Make up-to-standard rate to improve, after foundry goods is accomplished, make hoop 3 also bear the function of reinforcement wheel blade 2 intensity simultaneously; Therefore the preferable examples of hoop 3 are for around being connected wheel blade 2 outer rims and being close to the ring body of air intake 22, the outer rim of each wheel blade 2 is linked to each other through hoop 3 and support each other.Moreover hoop 3 is an oblique surface 31 towards the end face of centrifugal impeller air intake, is beneficial to air-flow and gets into air-flow channel 21.And the external loop diameter d1 of hoop 3 is equal to or less than the wheel blade girth diameter d2 with cross-sectional height.

As shown in Figure 2; The pedestal bottom end inside of the utility model wheel seat 1 is provided with multiple tracks ribs 12; Make the pedestal of wheel seat 1 on structure, form the form that equates wall thickness; So when cast form, help controlling the material deformation shrink grading and reach conformity, cooling rate evenly can prevent local deformation, to promote the mechanical property of wheel seat 1.

Utilize above-mentioned member to form; The utility model hoop 3 die casting frames are established the periphery that takes shape in wheel blade 2; Make the structural strength of wheel blade 2 air intakes 22 can receive the support of hoop 3,, thereby make centrifugal impeller must get the advantage of accurate lost wax casting worker method so that the structural strength of wheel blade 2 can not receive the die casting factor and decrease; Significantly promote manufacturing efficiency, output, and reduce manufacture cost.

Moreover; As shown in Figure 3, be the cured film assembling exploded perspective schematic representation of the utility model, can clearly reveal the cured film assembling structure of each member of the utility model through this figure; Wherein, Wheel seat 1 shaping surface outside has the caulking groove 13 of multiple tracks, and caulking groove 13 is complementary with the curved arc degree and the thickness of wheel blade 2, but the cured film transplanting of wheel blade 2 is positioned in the caulking groove 13.And; Wheel blade 2 all is concaved with a notch 24 in the outer edge near air intake 22; Be able to provide hoop 3 to mate hasp through notch 24 in wheel blade 2; Situation such as the cured film that makes wheel blade 2 can be supported by hoop 3 in the stability of air intake 22 sections, it is crooked can not shake are with precision and the integrity of keeping the cured mould of centrifugal impeller.

Though said hoop 3 demonstrates the link spring shape of one when the centrifugal impeller die casting is accomplished; Right its form in cured mode step section can be as shown in Figure 3; Going here and there hasp knot each other with the cell cube of multistage forms; The cell cube of each section hoop 3 can be supported between two adjacent wheel blades 2, so help locating the spacing of wheel blade 2, and make each air-flow channel 21 consistent size of centrifugal impeller.Or as shown in Figure 4, hoop 3 cured moulds also can be the direct hasp of a complete ring kenel and form in the notch 24 of wheel blade 2, and the processing procedure of centrifugal impeller when die casting can be carried out fast.This shows that the composite structure of the utility model hoop 3 cured moulds is intended to make centrifugal impeller smooth die casting to go out hoop 3 structures, does not execute the cured mode structure of making hoop 3 in which way so do not limit.

In addition, the utility model hoop 3 is towards the oblique surface 31 of centrifugal impeller air intake 22, when it is intended to make the centrifugal impeller running, and can be for guiding, to reach air-guiding and to reduce the effect that the windage situation takes place through the air-flow of centrifugal impeller air-flow channel 21.Moreover the external loop diameter d1 of the utility model hoop 3 is equal to or less than the wheel blade girth diameter d2 (as shown in Figure 5) with cross-sectional height, and so hoop 3 just can not form the centrifugal impeller gabarit and interfere.

The above; Be merely the preferred embodiment of the utility model; Be not in order to limit the protection domain of the utility model; So those of ordinary skill in the art in like manner all should be contained within the protection domain of the utility model not breaking away from the equivalence change and modification that the utility model spirit and scope are done such as.

Claims

1. centrifugal impeller structure, it comprises a wheel seat, a plurality of wheel blade and a hoop, and wherein, said wheel seat is the arc subulate pedestal, and its place, axle center has an axis hole; Said wheel blade is the slim blade of the toric curved wing; It takes shape in the wheel seat outer surface with radial arrangement; And be separated out a plurality of air-flow channels in the outer surface region of wheel seat, and around the wheel seat bit point, form an air intake, and around the wheel seat the other end, form an outlet air end; It is characterized in that: said hoop is for around being connected the wheel blade outer rim and being close to the ring body of air intake, and the outer rim of wheel blade links to each other through hoop and supports each other.

2. centrifugal impeller structure as claimed in claim 1 is characterized in that: said hoop is an oblique surface towards the end face of wheel blade air intake.

3. centrifugal impeller structure as claimed in claim 1 is characterized in that: the external loop diameter of said hoop is equal to or less than the wheel blade girth diameter with cross-sectional height.

4. centrifugal impeller structure as claimed in claim 1 is characterized in that: the bottom end inside of said wheel seat is provided with the multiple tracks ribs.