CN101844044A - Continuous homogenization and grading system of powder - Google Patents

Abstract

The invention discloses a continuous homogenization and grading system of powder, which belongs to the field of homogenization and grading technologies of powder materials and comprises a pneumatic atomizing device, a homogenization unit, a cyclone dust collecting device and a pulse bag dust collecting device which are sequentially connected back and forth. The system also comprises a pneumatic transmission device which is used for connecting all parts and supplying power. The pneumatic atomizing device comprises at least two sump pumps; and the homogenization unit comprises a plurality of parallel ash sumps. In the system, main links for producing powder, such as pneumatic atomization, pneumatic transmission, granularity grading, powder packing and the like, are connected into a whole to form a closed system with strong system performance; a plurality of groups of homogenization machines are used in parallel; homogenization operation is executed on a longer time shaft with better effect; more than two fine particles of different granularities can be separated out once; and in the complete process of powder production, the system is closed, without flying dust, thereby ensuring production safety.

Description

Continuous homogenization and grading system of powder

Technical field

The present invention relates to the homogenizing and the classification deep processing field of powder material, specifically a kind of continuous homogenization and grading system of powder.

Background technology

The chemical composition that makes many kinds material by a certain percentage, cooperate even, stable process to be referred to as homogenizing.Make the chemical composition of single variety material, the process that the grade quality mixes be referred to as pre-homogenizing.

In aluminium powder, cement etc. are produced, need carry out homogenizing and classification to powder.Existing industrial manufacture process is interrupted, and homogenizing and classification are finished at different workshops, and labour intensity is higher.Because the industrial production raw material sources are differentiated, the difference of raw material makes homo-effect be difficult to assurance, unstable product quality, and can not satisfy the job requirement of pipeline system, the labour intensity height.

Homogenizing in the industrial production generally uses grey storehouse to carry out now, and homo-effect is limited.

Dry classification is to utilize the principle of air current classifying to carry out classification, and the characteristics of air current classifying are to carry out high-precision, super narrow classification, the arrowband classification of particularly suitable ball aluminum powder.With the aluminium powder is example, and after high-precision classification, added value will be largely increased, and the superfine aluminium power after the classification can be widely used in fields such as military affairs, metallurgy, space flight, chemical industry, the energy, new material, pigment.

In the production process of present both at home and abroad powder product, be mostly interrupted and produce, because factors such as technique for producing raw material, control system often are difficult to guarantee to have equal quality with a collection of product.The fluctuation of product causes the index of portioned product to exceed the quality standard of country, industry or enterprise, causes product quality to descend.

The unique method that addresses this problem in the actual production is, before product export it carried out homogenizing and handles, and existing general homogenization installation is a container-like homogenizing jar, and granular material is carried out simple one-level homogenizing.Because for once homogenizing can not form continuous homogenizing production, the fluctuation of product is still bigger, yet there are no homogenization installation preferably.

Summary of the invention

The object of the present invention is to provide a kind of continuous homogenization and grading system of powder, form the hermetically sealed system of an organic unity, have the effect of homogenizing and classification concurrently, and the homogenizing constant product quality.

The present invention solves the technical scheme that its technical problem takes: this kind continuous homogenization and grading system of powder, it is characterized in that, the pneumatic nebulization device, homogenizing unit, cyclone dust collector, the pulse bag dust arrester installation that connect successively before and after comprising also comprise the Pneumatic conveyer that each several part is coupled together and power is provided;

Described pneumatic nebulization device comprises at least two storehouse pumps, and described storehouse pump is set up in parallel;

Described homogenizing unit is made up of the grey storehouse that plurality of parallel is provided with, and the import setting in each the grey storehouse valve that can open and close, the batcher of the outlet in each grey storehouse connection simultaneously;

Described cyclone dust collector comprises some end to end cyclone dust collectors, can select the number of cyclone dust collectors series connection as required;

Described pulsed jet cloth filter device comprises some end to end pulsed jet cloth filters, can carry out the number of strobe pulse sack cleaner series connection as required;

Described Pneumatic conveyer comprises blower fan and pipeline, and side opposite is with the good ceramic layer of wearability.

The number in described grey storehouse is at least eight.

Described valve is a solenoid electric valve.

The invention has the beneficial effects as follows:

1) key link with powder productions such as pneumatic nebulization, strength conveying, grading, powder packings combines as a whole, and forms closed system, and systematicness is strong; 2) adopt in parallel use of many group homogenizers, on longer time shaft, carry out the homogenization operation of powder, better effects if; 3) adopt multicyclone dust collector and sack cleaner, can carry out classification to granularity according to actual needs and collect, once separablely go out two or more varigrained subparticles; 4) production complete process of powder adopts sealing, dustless flying upward, and has guaranteed that production safety and operator's is healthy and safe.

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Fig. 2 is a process chart;

Arrow is represented the direction of advance of material among Fig. 1;

Among the figure: 1 storehouse pump, 2 grey storehouses, 3 batchers, 4 cyclone dust collectors, 5 sack cleaners, 6 feeding machines, 7 roots blowers, 8 pipelines.

The specific embodiment

As shown in Figure 1 and Figure 2, continuous homogenization and grading system of powder, the feeding machine, pneumatic nebulization device, homogenizing unit, cyclone dust collector, the pulse bag dust arrester installation that connect successively before and after comprising also comprise the Pneumatic conveyer that each several part is coupled together and power is provided.

Described pneumatic nebulization device comprises two storehouse pumps 1, constitutes two storehouses pump configuration.In this example the storehouse pump configuration comprise storage compartment and vaporizer, be provided with gasification board between storage compartment and the vaporizer.Carry the storage compartment to be provided with charging aperture, discharging opening and level gauging device and related valve; Vaporizer connects and directly is connected with compressed gas source.

Using method is: at first start feed arrangement, open the material valve of a storehouse pump, material feeds from feeding machine, when granular material filling certain altitude, the full indicator in storehouse starts, and sends signal by it the inlet valve of feed arrangement cuts out, and the feed arrangement that starts another storehouse pump simultaneously begins charging.Just begin to start the compressed air valve after first Cang Bengcang is full, compressed air enters in the pump housing of storehouse from vapor lamp, makes material atomizing in the pump housing storehouse, storehouse.Simultaneously spray into compressed air by airduct and be blown in the discharge nozzle with certain speed, gasification materiel is inhaled into pipeline and is sent to the homogenizing unit and carries out homogenizing.

This homogenizing unit is made up of some grey storehouses 2, and the import setting in the grey storehouse valve that can open and close, and outlet increases batcher 3 is set.Arranged side by side being arranged on thepipeline 8 mutually of a plurality of grey storehouses realizes the order that control is reinforced by by-pass valve control.The basic structure in this ash storehouse comprises the grey storehouse of container type, the top in ash storehouse is a charging aperture, charging aperture is provided with valve, the lower end connects surge tank, discharging opening is arranged on the surge tank, connect with each other by some homocline pipes that are uneven in length between described surge tank and the grey storehouse body, the upper end open of homocline pipe is positioned on the different horizontal plane of grey storehouse body, and concordant at the bottom of the storehouse of the upper end open that has a homocline pipe at least and grey storehouse body.The inside in grey storehouse has apparatus for measuring charge level simultaneously.

Described cyclone dust collector comprises some end to end cyclone dust collectors 4, and the material outlet of cyclone dust collectors connects packaging facilities and next stage deduster simultaneously, can select the number of cyclone dust collectors as required; The material that comes out from cyclone dust collectors or enter the next stage cyclone dust collectors and carry out dedusting again or directly enter packaging facilities carrying out rewinding, or directly return feeding machine 6 and carry out homogenizing again.

Described pulsed jet cloth filter device comprises some end to end pulsed jet cloth filters 5, can select the number of sack cleaner as required; The powdered granule of sack cleaner collection is the granularity minimum in general, and quality also is best.

Described Pneumatic conveyer comprises roots blower 7 and pipeline, and there is the good ceramic layer of wearability the inside of pipeline, carries out the conveying of wind-force.

The method of operating of this system is: feeding in the pump of storehouse at first, treat that the powder in the pump of storehouse reaches predeterminable level, automatically stop feeding, open the compressed air valve of vaporizer then, make the granular material atomizing and enter the homogenizing unit with the air communication piping, the grey storehouse charging valve in the homogenizing unit is subjected to programme-control, and certain interval of time opens and closes solenoid electric valve successively, granular material on the different time axle is evenly distributed in the grey storehouse that is set up in parallel, and obtains homogenizing in grey storehouse; After treating that the ash bin material is filled, open the valve and the feeding machine of described Hui Cang lower end simultaneously, make the material in the different grey storehouses drop in the pipeline simultaneously, open blower fan simultaneously, granular material enters cyclone dust collectors under the effect of air-flow, can collect powder product as required, the undesirable storehouse pump that enters once more screens; The part granular material of while cyclone dust collectors enters sack cleaner and collects.

Except that the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims (3)

1. a continuous homogenization and grading system of powder is characterized in that, the pneumatic nebulization device, homogenizing unit, cyclone dust collector, the pulse bag dust arrester installation that connect successively before and after comprising also comprise the Pneumatic conveyer that each several part is coupled together and power is provided;

Described pneumatic nebulization device comprises at least two storehouse pumps, and described storehouse pump is set up in parallel;

Described homogenizing unit is made up of the grey storehouse that plurality of parallel is provided with, and the import setting in each the grey storehouse valve that can open and close, the batcher of the outlet in each grey storehouse connection simultaneously;

Described cyclone dust collector comprises some end to end cyclone dust collectors;

Described pulsed jet cloth filter device comprises some end to end pulsed jet cloth filters;

Described Pneumatic conveyer comprises blower fan and pipeline, and side opposite is with the good ceramic layer of wearability.

2. continuous homogenization and grading system of powder according to claim 1 is characterized in that, the number in described grey storehouse is at least eight.

3. continuous homogenization and grading system of powder according to claim 1 is characterized in that, described valve is a solenoid electric valve.

Images