CN201507479U

CN201507479U - Blower impeller cast at one time by using high-intensity nylon

Info

Publication number: CN201507479U
Application number: CN2009201278767U
Authority: CN
Inventors: 赵冰
Original assignee: CHONGQING TABER MC NYLON Co Ltd
Current assignee: CHONGQING TABER MC NYLON Co Ltd
Priority date: 2009-07-02
Filing date: 2009-07-02
Publication date: 2010-06-16
Anticipated expiration: 2019-07-02

Abstract

The utility model provides a blower impeller cast at one time by using high-intensity nylon; the impeller is formed as a whole structure by a front disc, a rear disc and several vanes via one-time casting. There is no need to using welding for connection, sections of the vanes are solid but not hollow, so the blower fan has light weight, high intensity, good durability, high corrosion resistance and the like. The bubbles and crackles generated in welding and holes and gaps caused by abrasion are avoided, so the blower fan has good safety and prevents turbulence and strong shake in rotation of the impeller, the blower fan has simple structure and low manufacturing cost. The blower fan can replace the existing metal impellers made of steel, aluminum and alloy and the like.

Description

A kind of blower wheel with a cast molding of high-strength nylon

Technical field

The utility model relates to the blower member, is specifically related to a kind of blower wheel with a cast molding of high-strength nylon.

Background technique

Existing blower wheel mostly is made up of shroud, hub disk and some blades of being equally spaced, and blade generally adopts welding manner to be connected with shroud, hub disk.Also there is minority to adopt riveted joint or bolt to connect.Above-mentioned three kinds of parts select for use metal material processing such as steel, aluminium and alloy thereof to make usually.

As everyone knows, parts are easy to occur defectives such as bubble, crackle, slag inclusion in welding process, face of weld is uneven in addition, unbalanced stress when causing the impeller operation, load concentration, particularly impeller is easy to produce dangerous section when running up, and accident potential lies dormant.Because of metallic material proportion is bigger, be weight reduction again, reduce operation energy consumption,, make the middle cavity that forms of its blade, so that the processing blade airfoil is a radian so metal blade adopts two sheetmetal stack welding.

Because during metal blade work, be in the high speed rotating state for a long time, blade and air-flow and the dust of carrying secretly thereof, silt must produce violent friction, accumulate over a long period, the metal surface of blade is is very easily worn and torn, is out of shape even perforation, breach, produces turbulent flow when causing delivery air and disturbs, and seriously reduces the blower fan working efficiency.Moreover, impossible uniformity when blade is frayed, the blade of serious wear the weight difference occurs with the slight blade that weares and teares, will break the transient equiliblium of impeller operation, cause the vibration aggravation, can't proper functioning, cause blower fan when serious and disintegrate, lead to industrial accident.

Other has minority blower wheel or blade, does not adopt metallic material and selects for use glass fibre reinforced plastics or ceramic composite to make, and its shortcoming is the former easily aging fragmentation, and working life is short, and 2-3 must change; Latter's intensity difference, easy-rupturing, and machine shaping difficulty, fabricating cost is higher.Above-mentioned nonmetallic material using scope is extremely limited, except being used for the big medium transport of corrosivity, is difficult to generally apply.

The model utility content

At the deficiency on prior art and the material selection, the purpose of this utility model provides a kind of blower wheel with the disposable cast molding of high-strength nylon, has simple in structure, smooth surface is smooth, processing and fabricating is easy, need not weld, and also needn't rivet or the bolt connection.Particularly blade section is not a cavity and select real core for use, wearing and tearing takes place when having avoided the blade high speed rotating and reduce working efficiency, and can eliminate accident potential.

The utility model is by the disposable cast molding of self-control nylon formula material, prescription is made base-material with caprolactam and lauric lactam, add a certain amount of activity glass microballon and improve wear-resisting property, phthalein mountain valley with clumps of trees and bamboo orchid is an antiageing agent, and HPT is a plasticizing agent, NaOH is a catalyzer, the triphenylmenthane polyisocyanates is a cocatalyst, adds carbon black simultaneously, molybdenum disulfide, a small amount of chemical adjuvant such as teflon, physical and chemical performance such as further promote the utility model hardness height, wear resistance is good, corrosion resistance is strong.Experiment showed, this high-strength nylon, blower wheel that fully can the substituted metal material, and remedy its assembling trouble, weld defects is easy to deficiencies such as wearing and tearing, poor stability.

The used nylon material proportion of the utility model is 1.16, and the metallic material steel is 7.8, and aluminium is 2.7, alloy proportion 3.0-7.0.Obviously, the utility model is the similar impeller of metallic material relatively, and its weight only accounts for its part, then saves energy consumption when operation greatly.

The purpose of this utility model is to realize like this, a kind of blower wheel with a cast molding of high-strength nylon, it is characterized in that: the shroud of impeller, hub disk and the disposable casting of some blades form, and three kinds of parts of impeller need not weld or riveted joint or bolt connection.

The blower wheel of a cast molding of described a kind of high-strength nylon is characterized in that: the impeller section configuration is not cavity but real core.Thereby prevent to avoid blade that turbulent flow and high vibration take place in high speed rotating because of perforation, breach appear in blade wear.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the sectional view of the utility model blade 1.

Fig. 4 is the sectional view of prior art metal blade.

Embodiment

As shown in Figure 1 and Figure 2, the utility model is a kind of blower wheel with a cast molding of high-strength nylon, some blades 1 and shroud 2 and hub disk 3 member that forms a whole among the figure, smooth surface is smooth, does not have weld defects, the intensity height, wear resistance is good, in light weight, cost is low, the metallic impeller that can replace.

As Fig. 3 partial sectional view finding, be the section of the utility model blade 1, be shaped as real core nylon material.For the purpose of contrasting, Fig. 4 is a prior art material blade section, be after making, to be welded by two thick sheet metals of 2-4mm are thin, blade is a cavity, its maximum disadvantage is very easily to wear and tear to cause perforation, breach, distortion, cause turbulent flow and high vibration when causing moving, even the accident potential that hides.

The utility model blade 1 is real core, and the high-strength nylon wear resistance is better than metallic material, has remedied the deficiencies in the prior art fully.

Claims

1. blower wheel with a cast molding of high-strength nylon, it is characterized in that: the shroud of impeller, hub disk and the disposable casting of some blades form, and three kinds of parts of impeller need not weld or riveted joint or bolt connect.

2. a kind of blower wheel with a high-strength nylon cast molding according to claim 1 is characterized in that: the section configuration of blade is not cavity but real core.