CN201301125Y

CN201301125Y - Shaftless helical blade

Info

Publication number: CN201301125Y
Application number: CNU2008201631701U
Authority: CN
Inventors: 钱尧翎
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-21
Filing date: 2008-08-21
Publication date: 2009-09-02
Anticipated expiration: 2018-08-21

Abstract

The utility model discloses a shaftless helical blade. The blade diameter gradually changes along the axial direction of the body, the pitch among the blades is equal or correspondingly gradually changes along the axial direction of the body with the blade diameter change, and the external ring end surface of the blade adopts arc transition. The shaft-less helical blade has simple structure and lower material consumption. The variable diameter structure can effectively prevent material deposit, plugging and other phenomena. The shaftless helical blade also has material homogenizing and loosing actions. The external ring end surface of the blade adopts the arc transition, so as to reduce friction with materials as well as running resistance, thereby improving the efficiency and prolonging the service life of the blade.

Description

A kind of Shaftless spiral blade

Technical field

The utility model relates to a kind of Shaftless spiral blade.

Background technology

Shaftless spiral blade is used on the Shaftless screw conveyor, compare traditional screw conveyor shaft that has, because of having center shaft, do not disturb Shaftless spiral blade, material is difficult for stopping up, thereby can turn round than low velocity, steadily transmission cuts down the consumption of energy, and is widely used in building materials, chemical industry, electric power, medicine, metallurgical, industries such as food, in the prior art, do not have between each blade of axle spiral and generally all be set to constant pitch, be convenient to make, but this structure is when carrying the stronger object of some prehensiles, putty appears easily, buildup, phenomenons such as defeated material is inhomogeneous cause running resistance to increase, and equipment is fragile.

Summary of the invention

Problem to be solved in the utility model just provides a kind of Shaftless spiral blade, and is simple in structure, can effectively prevent buildup, putty, and the homocline function is arranged in material conveying process, increases Shaftless spiral blade service life.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of Shaftless spiral blade, blade diameter along body shaft to gradual change.

Further, blade diameter along body shaft to gradual change or gradual change from small to large from big to small.

Further, interlobate pitch equates.

Further, interlobate pitch along body shaft to increasing with blade diameter or reducing and reduce with blade diameter.

Further, blade outer shroud end face is an arc transition, reduces the friction with material.

After the utility model has adopted such scheme, saved material, become diameter structure and can prevent phenomenons such as buildup, putty by actv., also has the effect of homocline and loose metal, blade outer shroud end face is an arc transition, reduces the friction with material, has reduced running resistance, thereby improved efficient, also made the utility model life-span longer.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described further:

Fig. 1 is the utility model perspective view;

Fig. 2 is the structural representation of the utility model embodiment one;

Fig. 3 is the A-A cutaway view of Fig. 2;

Fig. 4 is the structural representation of the utility model embodiment two;

Fig. 5 is the B-B cutaway view of Fig. 4.

The specific embodiment

Be illustrated in figure 1 as the utility model perspective view, a kind of Shaftless spiral blade, blade 1 diameter along body shaft to gradual change or gradual change from small to large from big to small, when failing material, when material is carried to small diameter blades from the major diameter blade, can strengthen the homocline function of blade 1 in the material conveying process, and have good sealing function; When carrying the stronger material of prehensile, material can be carried to the major diameter blade from small diameter blades, can effectively prevent putty, buildup, also have the function of bulk material.

As Fig. 2, Figure 3 shows that the structural representation of the utility model embodiment one, to gradual change from small to large, the pitch that blade is 1 equates that blade 1 outer shroud end face 11 is an arc transition, reduces the friction with material to blade 1 diameter along body shaft.

As Fig. 4, Figure 5 shows that the structural representation of the utility model embodiment two, blade 1 diameter along body shaft to gradual change from small to large, to corresponding the increasing with the increase of blade 1 diameter, blade 1 outer shroud end face 11 is an arc transition to the pitch that blade is 1, reduces the friction with material along body shaft.

Claims

1, a kind of Shaftless spiral blade is characterized in that: blade (1) diameter along body shaft to gradual change.

2, a kind of Shaftless spiral blade according to claim 1 is characterized in that: blade (1) diameter along body shaft to gradual change from small to large.

3, a kind of Shaftless spiral blade according to claim 1 is characterized in that: blade (1) diameter along body shaft to gradual change from big to small.

4, according to claim 1,2 or 3 described a kind of Shaftless spiral blades, it is characterized in that: the pitch between blade (1) equates.

5, a kind of Shaftless spiral blade according to claim 2 is characterized in that: the pitch between blade (1) along body shaft to increasing with blade diameter.

6, a kind of Shaftless spiral blade according to claim 3 is characterized in that: the pitch between blade (1) along body shaft to reducing and reduce with blade diameter.

7, according to claim 1,2,3,5 or 6 described a kind of Shaftless spiral blades, it is characterized in that: blade (1) outer shroud end face (11) is arc transition.

8, a kind of Shaftless spiral blade according to claim 4 is characterized in that: blade (1) outer shroud end face (11) is an arc transition.