2014年6月20日星期五

Wood powder machine dust collector function:


Kefan wood powder making machine dust collector have many kinds model, generally we equipped round anto-pressure dust collector, pulse bag dust collector, bag dust collector. The bag dust collector equipped on the wood powder machine main function: filtration and dust cleaning two side. Dust collecting can clean all the materials like saw dust in the wood flour machine.
According to bag dust collector existing technology standard, making sure filtration effect achieve national standard isn't a difficult thing. But control wood powder machine bag dust collector equipment resistance at limited range is much more difficult. Make a general survey of bag dust collecting system appear working with bad effect problem, it has many relative about dust collecting with bad effect, so, clean dust is the determined factor relative to whether bag dust collecting system success or failure.
As wood powder making machine output products is powder condition, these powder is too fine, big adhesion and is difficult to clean. So, we suggestion that: after wood powder machine stop working, you can put bag dust collector to blow-off nozzle blowing, it sounds difficult but easy in fact. Or you can put the dust collecting device to water to soak, these powder will normal deposition and can be completely discharging.

2014年6月19日星期四

Wood chipper application,feature and working tips:


The wood chipping machine main composed by swarf device, grinding device and blower. Wood material through swarf device, output products with small size granule, no need dry up and can feeding to grinding device to carry out futher grinding. Grinded wood dust products conveying to aggregate site by blower. The best wood chipper price whole equipment only need a motor to drive, simple structure, compact layout, best price, stable working, low energy consumption, high production capacity, good wood dust products, low investment. Can process bamboo, twitch-grass, cornstalk, sorghum stalk and other fiber stalk material. The machine can also process chipboard, saw dust board high density board raw material.
Wood chipping machine is according to our national industrial production requirement, through many years research developed wood material grinding series special equipment. As compact design and structure, safety, durable, high production efficiency, after popularize and using, with good effect, low noise, etc.
Wood chipper working principle:
Wood chipper for sale adopt blade cutting and high speed gas impact, collision dual crushing function in one and also can finish micro-material separating and processing. During blade cutting and crushing process, rotor produce high speed gas, rotation along with blade cutting direction, material increase working speed in gas and repeat impact material and suffering dual crushing, speed up material grinding rate.

2014年6月18日星期三

High pressure suspension mill structure and working principle:


High pressure suspension mill working principle:
Inner high pressure suspension grinding mill, grinding roller hanger fixed 1000-1500kgs high pressure spring pressure. After start working, grinding roller rotation embrace around main shaft and under high pressure spring and centrifugal force function, roller cling grinding ring, under the same power condition, rolling pressure compared with raymond mill higher 1.2times. So, it's working capacity is improved greatly. After grinded material flow into grinding chamber, feed between grinding roller and grinding ring to press by blade. After grinded, powder along with blower recirculating air flow into analyzer. Qualified fine powder along with airflow to cyclone powder collector and get final products, big size granule re-falling to grinding chamber to grind. Recirculating air return blower repeat above process, remaining wind will flow to bag dust collector to purification. After high pressure suspension grinding mill grinding roller and grinding ring achieve a certain abrassion, adjust high pressure spring length, keep grinding roller and grinding ring constant pressure to make sure stable production capacity and fineness.
High pressure suspension mill structure introduction:
High pressure suspension grinding mill composed by main host, fineness analyzer, blower, final products cyclone powder collector, bag dust collector and airflow pipeline connection, etc. According to clients needs, it can equip crusher, elevator, silo, electric-vibration feeder and power distribution cabinet, etc. In the main host, grinding roller subassembly through cross arm shaft suspension on the grinding hanger, grinding roller hanger and main shaft blade frame keep fix connection, pressure spring outward grinding roller bearing chamber cantilever, put cross arm shaft as supporting point compel grinding roller tightenly press on grinding ring surface, when motor through driving device drive main shaft rotation, blade and grinding roller synchronous revolution, at the same time, grinding roller in grinding ring revolve on its axis. High pressure roller mill motor through driving device drive analyzer impeller rotation, the more the impeller rotation speed, the finer the separated powder.

2014年6月17日星期二

How to improve raymond mill powder discharging capacity:


Raymond grinding mill is nowadays the most common industrial one of powder making equipment. The machine discharging capacity directly effect the whole project efficiency, you can find raymond mill production efficiency effects, for improve powder discharging capacity and each enterprise is very important, thus, henan kefan engineer summarizes the following tips to discuss;
Effect raymond mill discharging capacity factors:
Material too hard; harder material using raymond roller mill to grind is more difficult, and is more serious to abrassion the equipment, the machine working with slow speed, of course, with small capacity.
Material moisture: when material with big moisture, material is easy adhere to the raymond mill and easy to be blocked during discharging process, lead to working capacity reduced.
Raymond grinding mill output products fineness: high fineness requirement, the required raymond mill output material finer, the smaller working capacity.
Material compose: before grinding, more finer powder will have bigger effect on raymond mill, as these fine powder will easy adhere to conveying. For raw material with too much fine powder, you should screening once time before feeding to the machine.
Material viscosity: material with bigger viscosity will easy adhere to the machine.
Raymond mill spare parts(hammerhead, jaw board) with good wearable properties, the machine working with bigger capacity, if the spare parts is easy abrassion will effect working capacity.
Solve methods:
1. Raymond roller mill forward add fine crusher;
2. Improve powder grinding system, improve powder grinding effect;
3. Add high efficiency powder separator;
4. Check and adjust powder locker sealings, replace new blade;
5. After clean the airflow pipeline material, re-discharging again.

2014年5月17日星期六

Cement cooler introduction and working principle:

Cement cooler introduction:
Cement clinker cooler is an important part of the kiln system and has a decisive influence on the factory production performance. Good cement clinker cooler has three key indicators characterize: maximum heat recuperation, minimum cooling air flow capacity and unlimited equipments working efficiency.
From cement cooler development history, there are several cycle changes: grate coolers were first introduced by Fuller Company (USA) at around 1930. As its advanced design, the grate cooler became the main using type in the 1950's. As planetary cooler is easy to operate, in the late 1960's, the planetary cooler gained popularity which reached its peak in the 1970's.
Precalcining technical single machine has to increas production capacity, so, grate cooler get the preferred selection again. In the mid 1980's, grate cooler renew design can not only greatly improve the technology, but also has a new position among suppliers side and the new problems has already granully to slove.
Since cement equipment have life cycles of 40 years and more, each kind cement cooler type, no matter planetary, rotary or grate cooler, will remain in operation for many more years.

Cement cooler general working principle:
Cement clinker cooler has the following tasks to fulfil: through clinker and hot air heat exchange realize process internal heat recuperation, reduce clinker temperature to convenient for clinker transport and storage, provide fastest cooling velocity to avoid unfavorable clinker phases and crystal size produce.

2014年5月13日星期二

Why raymond roller mill can used in kaolin field?

Recently years, with kaolin develop, it is widely used in many other industrials, such as paper making, coating, plastic rubber cable, ceramic, chemical, cement, refractory material and agriculture and so on. Some high new technical industrial has already using big amount of kaolin as new material, even the high temperature resistant ceramic spare parts, also made of kaolin.

Our country has rich kaolin resource, total reserve ore 14.7 one hundred million tons. Kaolin firing process needs too many equipments, but the main equipments is raymond grinding mill, especially high pressure raymond mill, process 400mesh kaolin, general raymond grinding mill can do it, but process 1200mesh kaolin, needs ultrafine raymond mill or high pressure micro-powder mill.

Among raymond mill spare parts, main important three spare parts: pipeline, reducer and main bearing. 1. Raymond roller mill pipeline function is supporting and airflow, high requires of pipeline durable material; 2. According to ideal reduction ratio to select reducer; 3. The most important one is bearings, if using defective products will effect production efficiency.

2014年5月7日星期三

Cement clinker cooler functions and species:

Cement clinker cooler has two main functions: recycle as much heat as possible from the hot clinker to heat up the air used for combustion, cool the clinker from 1400 degree to temperatures suitable for the subsequent process equipment, general working temperature is from 100 to 200 degree.  
There are mainly two different types cement clinker coolers in operation with the following features:  
Rotating coolers, rotary tube coolers with independent drive or planetary cooler attached to kiln shell, quasi counter-current flow realize heat exchange, cooling air determined by hot air, no waste air, heat exchange determined by condition of internal heat transfer equipment, limited single unit size, planetary cooler is not suitable for pre-calcination technology, practically no new installation built anymore.
Grate coolers, carry out heat exchange through horizontal clinker layer with cold air from grate board. Cooling airflow capacity exceed combustion air requirement airflow capacity can decrease clinker temperatures, but will produce wast air. Modern cooler technology with sophisticated plates and forced aeration systems make combustion air temperatures exceeding 1000 degree. Trend to wider and fewer grates, decrease cooling air and fixed inlets.
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