CN202897418U

CN202897418U - Varying pitch slot type helical conveyor

Info

Publication number: CN202897418U
Application number: CN201220560013.0U
Authority: CN
Inventors: 韦栋栋; 刘玉龙; 张新强
Original assignee: Xian Dagang Road Machinery Co Ltd
Current assignee: Xian Dagang Road Machinery Co Ltd
Priority date: 2012-10-28
Filing date: 2012-10-28
Publication date: 2013-04-24
Anticipated expiration: 2022-10-28

Abstract

The utility model provides a varying pitch slot type helical conveyor which mainly resolves the problems that an existing helical conveyor is large in input torque, wastes energy, easily enables characteristics of materials to be changed, and enables quality of the materials to be deteriorative. The varying pitch slot type helical conveyor comprises a threaded rod and helical blades arranged on the threaded rod, each helical blade is divided into N sections, N is a natural number greater than or equal to 2, pitches between two adjacent helical blades in each section are the same, and the pitches between the helical blades in the sections are gradually increased along the material moving direction towards a material outlet. The varying pitch slot type helical conveyor enables upper surfaces of the materials in a material bin to be integrally descended, saves input power of the whole helical conveyor, and is simple in structure and low in cost.

Description

A kind of variable pitch groove type helical feeder

Technical field

The utility model relates to a kind of variable pitch groove type helical feeder, and this device is used for the material integral body of bin bottom is sent, and belongs to the road building equipment technical field.

Background technology

Screw input feeder is the device that utilizes the rotation of spiral that the material in concentric semicircle hopper is carried.Material in the hopper is because gravity reaches the effect to the cell wall friction force, and on the go does not rotate with spiral, but moves along hopper with the slip form, and auger loader is multiplex in horizontal feed, and when being used for tilting to carry, its inclination angle generally should be less than 30 °.Suitable graininess or the granular material of carrying drying, but under the effect of spiral, can cause material crushing.

But the existing screw input feeder that is applied in the road building equipment, because its pitch all equates, material all moves to discharging opening from the screw input feeder root, and be filled all the time from the material that root is input into spiral, in the process of carrying to discharging opening, the material of feed bin can't enter spiral, and the material of feed bin can produce the pressure that continues to spiral, cause the input torque of constant pitch screw input feeder very large, wasted the energy; Material also might cause the characteristic of material to change to the pressure of spiral, and the quality of material is degenerated.

Summary of the invention

The utility model provides a kind of variable pitch groove type helical feeder, has mainly solved existing screw input feeder input torque very large, wastes energy, and the characteristic of material is changed, the problem that the quality of material is degenerated.

Concrete technical solution of the present utility model is as follows:

This variable pitch groove type helical feeder comprises screw rod and the helicallobe that is arranged on the screw rod, described each helicallobe is divided into the N section, N is the natural number more than or equal to 2, pitch between the helicallobe in described each section is equal, and the pitch between each section helicallobe increases progressively to the material outlet moving direction along material.

The pitch of maximum is less than the external diameter of helicallobe between above-mentioned each section helicallobe.

Minimum pitch is greater than half of helicallobe external diameter between above-mentioned each section helicallobe.

Pitch increasing progressively as equal difference along material to the material outlet moving direction increases progressively between above-mentioned each section helicallobe.

The length of above-mentioned each section helicallobe can be set to identical or different, considers according to reality processing, take identical and length 1000mm as good.

The utility model has the advantage of:

This variable pitch groove type helical feeder can make the upper integral plane of feed bin material descend, and saves the horsepower input of whole screw input feeder, and it is simple in structure, and cost is low.

Description of drawings

Fig. 1 is the utility model structural front view.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in detail, as shown in the figure:

This variable pitch groove type helical feeder operated by rotary motion is used for the material conveyer of the whole discharging of material in the feed bin at bin bottom.

The pitch segmentation of variable pitch from the root of spiral to the outlet position of screw input feeder shows a rising trend, and the preferred successively mode of equal difference increases, and is the pitch of the actual conveying amount of screw input feeder in the pitch of discharging opening, and the pitch maximum is no more than the external diameter of spiral; The pitch of root generally is not less than 0.5 times spiral external diameter.

In whole conveying process, the position conveying amount less that pitch is little, in the process that pitch increases successively, the conveying amount of spiral is also increasing simultaneously successively, until during the material delivery port of spiral, the conveying amount of spiral equals the design conveying amount of whole spiral.The variable-pitch auger feeder can make the upper integral plane of feed bin material descend, and saves the horsepower input of whole screw input feeder.

On the helix length direction, spiral can be divided into l ₁, l ₂, l ₃, l ₄Etc. the pitch that some length distance equate or do not wait, total length is L.The problem that is limited to manufacturing process, it is a lot of that li can not divide, and generally speaking, li is made as equal 1000mm comparatively reasonable.

Claims

1. variable pitch groove type helical feeder, comprise screw rod and the helicallobe that is arranged on the screw rod, it is characterized in that: described each helicallobe is divided into the N section, N is the natural number more than or equal to 2, pitch between the helicallobe in described each section is equal, and the pitch between each section helicallobe increases progressively to the material outlet moving direction along material.

2. above-mentioned variable pitch groove type helical feeder according to claim 1 is characterized in that: maximum pitch is less than the external diameter of helicallobe between described each section helicallobe.

3. above-mentioned variable pitch groove type helical feeder according to claim 2 is characterized in that: minimum pitch is greater than half of helicallobe external diameter between described each section helicallobe.

4. according to claim 1 to 3 arbitrary described above-mentioned variable pitch groove type helical feeders, it is characterized in that: pitch increasing progressively as equal difference along material to the material outlet moving direction increases progressively between described each section helicallobe.

5. above-mentioned variable pitch groove type helical feeder according to claim 4, it is characterized in that: the length of described each section helicallobe is identical.

6. above-mentioned variable pitch groove type helical feeder according to claim 4, it is characterized in that: the length of described each section helicallobe is 1000mm.