CN203470201U - Equipment for separating light impurities from solid particles - Google Patents

Abstract

The utility model belongs to material separation equipment and in particular discloses equipment for separating light impurities from solid particles. The equipment for separating light impurities from solid particles is characterized in that an air inlet in the bottom of a fluidized bed is connected with an air outlet of a fan through a pipeline; a gas-collecting hood is arranged on the top of the fluidized bed and is connected to an inlet of a cyclone separator through a pipeline; a clean air outlet in the top of the cyclone separator is connected with an air inlet of the fan. The equipment has the beneficial effects that only a fan is needed, two processes of air blowing and air exhaust through the fluidized bed can be finished, the equipment investment is saved, and the power consumption is reduced. Meanwhile, gas in the equipment is recycled in a closed mode, the pollution generated by gas discharge is avoided, and the environmental protection is promoted.

Description

Light impurities separation equipment in solid particle

Technical field

The utility model belongs to separating substances equipment, especially for the equipment of light impurities in separate solid particles.

Background technology

In many solid particulate matters are produced, need many raw materials to crush and screen, for example, in organic fertilizer production process, raw material is after sieving, and particle is also mingled in the inside together with light impurities such as pulverized plastic sheet, Polywoven Bag silk and foamed plastics.How these light-duty impurity being separated is a difficult problem.

Utility model content

In order to solve the difficult problem that the light impurities being mingled in solid particle raw material is separated, the purpose of this utility model is to provide the light impurities separation equipment in a kind of solid particle.

The utility model solves the technical scheme that its technical problem adopts: the light impurities separation equipment in a kind of solid particle, it is characterized in that: the air inlet of fluid bed bottom is connected by pipeline with the gas outlet of blower fan, fluid bed top is provided with gas skirt, gas skirt is connected to the import of cyclone separator through pipeline, the pure air gas outlet at cyclone separator top is connected with the air inlet of blower fan through pipeline.

Described fluid bed bottom is provided with fluid bed air chamber, is distributed with 6-8 gas outlet above air chamber, and gas outlet bottom is connected with fluid bed air chamber, and gas outlet top is provided with top cover, and the barrel of giving vent to anger of top cover bottom is provided with equally distributed venthole.

In the utility model, when mixture " flows through " from fluid bed, heavy solid particle flows out by flowing to, and enters hopper below.Light shape impurity is blown afloat, along with air flow collection gas hood is taken away by extractor fan above, enter cyclone separator by cyclonic separation, impurity sinks to bottom, can be regularly from the impurity floss hole of bottom, gas enters blower fan circulation from the separator gas outlet on cyclone separator top through pipeline.

Fan Selection should meet the requirement of fluid bed blast, and cyclone dust removal instrument size can be according to determination of power load.

About design and the lectotype selection of fluid bed, can calculate with following formula according to the proportion of material, granular size:

Critical fludization velocity:

$U_{\mathrm{mf}}=\frac{{\left({\mathrm{\&Phi;}}_s{D}_p\right)}^2({\mathrm{\&rho;}}_s-\mathrm{\&rho;})g}{150\mathrm{\&mu;}}\left(\frac{{{\mathrm{<figure-callout\; id="3"\; label="E\; mf"\; filenames="HDA00003857449300011.png"\; state="\{\{state\}\}">E</figure-callout>}}_{\mathrm{mf}}}^3}{1-E_{\mathrm{mf}}}\right)$

Φ _s------particle sphericity < 1

D _pthe ball diameter that-----is identical with particle volume

E _mf-----just started to flow bed voidage when colored

ρ _s------density of solid particles

ρ-------atmospheric density

μ-----viscosity

G------acceleration of gravity

Blast can calculate according to Bai Nuoli equation: with upper wind speed of calculating, just can obtain blast P above ₁, can be to Fan Selection.

$Z_1+\frac{p_1}{\mathrm{\&gamma;}}+\frac{a_1{\mathrm{\&upsi;}}_1^2}{2g}=Z_i+\frac{p_i}{\mathrm{\&gamma;}}+\frac{a_i{\mathrm{\&upsi;}}_i^2}{2g}+h{w}_{1-i}$

The beneficial effects of the utility model are only to use a Fans; can complete fluid bed blowing and two processes of exhausting, save equipment investment, also reduce power consumption; gas closed circulation in equipment is used simultaneously, and the pollution of having avoided gas discharging to produce utilizes environmental protection.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model,

Fig. 2 is that the Fluidized Bed Partial A-A of Fig. 1 is to view.

In figure, 1. blower fan, 2. fluid bed air inlet, 3. fluid bed, 31. fluid bed air chambers, 32 gas outlets, 33. adverse current cofferdam, 34. ventholes, 4. gas skirt, 5. cyclone separator, 6. gas outlet, 7. impurity floss hole.

The specific embodiment

The specific embodiment of the present utility model is, as shown in the figure:

Embodiment 1, light impurities separation equipment in a kind of solid particle, it is characterized in that: the fluid bed air inlet 2 of fluid bed 3 bottoms is connected by pipeline with the gas outlet of blower fan 1, fluid bed top is provided with gas skirt 4, gas skirt is connected to the import of cyclone separator 5 through pipeline, the pure air gas outlet 6 at cyclone separator top is connected with the air inlet of blower fan through pipeline.

In the utility model, when mixture " flows through " from fluid bed, heavy solid particle flows out by flowing to, and enters hopper below.Light shape impurity is blown afloat, along with air flow collection gas hood is taken away by extractor fan above, enter cyclone separator by cyclonic separation, impurity sinks to bottom, can regularly from the impurity floss hole 7 of bottom, discharge, gas enters blower fan circulation from the separator gas outlet on cyclone separator top through pipeline.

Claims (2)

1. the light impurities separation equipment in a solid particle, it is characterized in that: the air inlet of fluid bed bottom is connected by pipeline with the gas outlet of blower fan, fluid bed top is provided with gas skirt, gas skirt is connected to the import of cyclone separator through pipeline, the pure air gas outlet at cyclone separator top is connected with the air inlet of blower fan through pipeline.

2. the light impurities separation equipment in solid particle according to claim 1, it is characterized in that: described fluid bed bottom is provided with fluid bed air chamber, above air chamber, be distributed with 6-8 gas outlet, gas outlet bottom is connected with fluid bed air chamber, gas outlet top is provided with top cover, and the barrel of giving vent to anger of top cover bottom is provided with equally distributed venthole.

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