CN2935042Y - Relay damage-reduced drying oven - Google Patents

Abstract

The utility model relates to a relay breakage reducing dryer used to dry materials, which is an improved one of prior driers. In particular, a relay breakage reducing device is arranged in middle of the cylinder, which comprises a middle axle and a plurality of blades arranged on the middle axle. The utility model can reduce breakage of materials during drying effectively, and is applicable for drying materials in building material and chemical lines in particular.

Description

Relaying subtracts damaged dryer

(1) technical field: the utility model relates to a kind of improvement technology of drying materials equipment, is that a kind of relaying that is used for building materials, chemical industry, metallurgical industry subtracts damaged dryer.

(2) background technology: traditional dryer mainly is by cylindrical shell, the support at supporting cylinder two ends and the transmission device composition that drives the cylindrical shell rotation, its operation principle is: the process that material is dried in the dryer is that cylindrical shell rotates and makes the material formula lifting lifting blade that is combined mention the top and fall down to do the movement of falling object, and in high-temperature gas after the violent heat exchange, fall on the lifting blade or material of cylindrical shell bottom, prepare circulation next time.That goes round and begins again like this finishes drying purpose.

The kinetic energy that material gathers in the process of freely falling body discharges in the collision after falling, and causes the material fragmentation.Hence one can see that, and under same operating mode, the material lifting must be high more, and the freely falling body terminal velocity is big more, and breakage rate is high more.

By formula: $h=\frac{\mathrm{<figure-callout\; id="2"\; label="g\; t"\; filenames="Y20062009817900051.png"\; state="\{\{state\}\}">g</figure-callout>}{t}^{}{}^2}{2}$ 1. $t=\sqrt{\frac{\mathrm{<figure-callout\; id="2"\; label="gt"\; filenames="Y20062009817900051.png"\; state="\{\{state\}\}">gt</figure-callout>}}{2}}$ ①’

V=gt is arranged again ... 2. with substitution 1. ' $V=g\sqrt{\frac{2h}{g}}$

$V=\sqrt{2\mathrm{hg}}$ ……③

By impact force $F=\frac{m{V}_z-\mathrm{mV}}{\mathrm{\&tau;}}$ 4. in the formula,

F--impact force (N)

The terminal velocity (m/s) of V--material freely falling body

V _z--the speed after the collision is 0 herein

τ--collision time is determined (second) with the characteristic of head-on collision storeroom

Respectively with V _z4.=0 and 3. substitution

$F=\frac{-\mathrm{<figure-callout\; id="2"\; label="m"\; filenames="Y20062009817900051.png"\; state="\{\{state\}\}">m</figure-callout>}\sqrt{2\mathrm{hg}}}{\mathrm{\&tau;}}$ ……⑤

Analyze 5. as can be known, m, τ, g under same operating mode are a fixed number with a kind of material, and impact force F is proportional to

, that is to say, only reduce the drop height and just can reduce impulsive force, reduce breakage rate.

Existing dryer is owing to no any blocking means that connects in the cylindrical shell, and its material drop is bigger, therefore has the bigger problem of breakage rate.

(3) summary of the invention: the purpose of this utility model is exactly the material breakage rate that will reduce existing dryer, to adapt to the oven dry of some special materials, provides a kind of relaying to subtract damaged dryer.

Concrete scheme of the present utility model is: improve at existing dryer, its improvement is: install a relaying additional at the simplified middle part of existing dryer and subtract damaged device, this device includes an axis, and the some blades that are contained on the axis are formed.

Operation mechanism of the present utility model is: the cylindrical shell rotation work, the blade that its relaying subtracts damaged device will " connect " top lifting blade firmly and topple over the material that gets off, then progressively along the blade landing in cylindrical shell bottom, thereby so just make the freely falling body height h of material be reduced to h/4 or h/3 has reduced breakage.

The utility model is simple in structure, can effectively reduce the breakage rate of oven dry material.

(4) description of drawings:

Fig. 1 is the front view of the utility model structural representation;

Fig. 2 is the side view of the utility model structural representation.

Among the figure: 1-cylindrical shell, 2-gusset, 3-blade, 4-axis, 5-lifting blade.

(5) specific embodiment:

The same prior art of basic structure of the present utility model, it has cylindrical shell 1 and supports simplified 1 support and drive the transmission device that cylindrical shell 1 rotates, the inwall of cylindrical shell 1 is provided with some lifting blades 5, improvement of the present utility model is: referring to Fig. 1, Fig. 2, relaying has been installed in cylindrical shell 1 has been subtracted damaged device, this device includes an axis 4 to be formed with the six uniform blades 3 that are contained on the axis 4, and this device is to adopt on the every blade 3 to be connected one by three gussets 2 with cylindrical shell 1.

Relaying of the present utility model subtracts damaged device and can also adopt support connection axis 4 and cylindrical shell 1 dress to be one, and other connected mode is installed.Relaying subtracts length, the number of blade, blade shape and the length of blade of damaged device can be with the technological requirement adjustment.

Claims (1)

1. a relaying subtracts damaged dryer, include the support at cylindrical shell, supporting cylinder two ends, and drive the transmission device that cylindrical shell rotates, it is characterized in that: at the middle part of cylindrical shell relaying is installed and subtracts damaged device, this device includes an axis, and the some blades that are contained on the axis are formed.

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