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Most of the flour we usually see, this is because the flour machine in the flour production and processing, but also through the drying process. Flour machine to flour drying is not in place or drying excessive will have bad results:
First of all, flour machinery in the processing of flour before, are to put the wheat in the water to wash a wash, this is in order to flour clean needs, of course, this is a large flour machine assembly line operation, not a separate process. After washing, the wheat is easy to take off the seed coat, and the wheat kernel is processed into flour, which is the role of moisture, and in the process, there is no drying of the wheat kernel, so the processed flour is wet.
If the flour is too dry, there will be a lot of flour flying into the air, when the air reaches a certain concentration of flour, if there is an open flame flash, there will be an explosion, the consequences of the flour explosion, and the gas is no different from the power, it does not matter that the explosion is generated.
However, this is only due to the flour milling process, will not have any effect on the quality of the flour, so please feel free to buy and use.
A flour mill does not refer specifically to a flour mill, much less a small flour mill, but rather to all devices that grind grain into a powdery substance, which can be either a stone mill or an electric flour mill. The difference between a mill and a flour mill is only one word, but it is not the same kind of equipment. The flour mill is capable of processing any grain that can be ground into powder, such as grain, soybeans, mung beans, millet, green beans, flower beans, red beans, as long as it can be ground into flour, can be processed.
The flour mill does not have the structure of separating bran and flour, and it can only process the grain into powder, but it cannot separate the husk and flour in it. Flour mills, on the other hand, are specialized to process wheat and have a hull and flour separation structure that can separate the hull from the flour. Flour mills can't be used to process flour, they can't be used to process wheat, they can only process corn, soybeans and other grains that don't need to be separated.
Because the dust collector applied to explosive occasions with explosive so the operation of such dust collector is different from the ordinary dust collector, the following we introduce in the operation of explosion-proof bag filter should pay attention to what matters.
① explosion-proof bag filter operation, do not arbitrarily open the manhole door, cover, poke holes, etc., if the explosion-proof dust collector has the phenomenon of shadow combustion and smothering fire, the wall gas will enter the explosion-proof dust collector from the holes, resulting in a sudden combustion and explosion. Process equipment to stop running, workers want to enter the explosion-proof dust collector for inspection, should pay attention to the explosion-proof bag filter can not be cooled to the wind, should be the bag filter import and export pipeline valves closed tightly, so that it is naturally cooled.
② explosion-proof bag filter in the open air, there should be rain measures to avoid rain into the insulation layer, reduce the insulation effect and cause the adverse consequences of condensation, or dust bag clogging.
③ When spraying inert gas into the explosion-proof bag filter to extinguish the fire, the valves on the import and export pipelines should be closed, otherwise the inert gas will soon be diluted by the air, and will not be effective in extinguishing the fire.
④ Avoid the external radiation heat source, such as from the combustion device should be a certain distance, or add a heat insulation cover.
⑤ There should be enough idle time before the dust collector is shut down to remove the flammable and explosive dust such as coal dust in the dust system and transportation system.
If your bag filter has been smoking or ash, then in accordance with the latest regulations of the Ministry of Ecology and Environment, should be immediately shut down for maintenance, to avoid being found by the relevant departments to be dealt with. One of the main reasons for smoke and dust is caused by broken bags, and there are two kinds of smoke and dust from the outlet of the bag filter:
One is from the mouth of the continuous smoke, this is because the dust bag is badly damaged or bag dust collector up and down the mouth is not tight, on the mouth of the ceiling and the flower plate, the flower plate and the connection between the flower plate is not tight and caused by the leakage of dust; the other is an instantaneous smoke, this is the case is the dust bag is broken, but not very serious, in the bag dust collector spraying momentary smoke and dust.
When most of the dust bag is damaged, it should be replaced, and it is best to replace the dust bag when the bag filter stops working. At this time, the dust controller should be turned off, open the top of the hole door, you can disassemble the bag, disassembly, first take out the bag cage, and then pinch the spring ring of the upper mouth of the bag into a concave shape, and pull out the dust bag upward, before installing a new bag, you should be cleaned of dust on the hole of the flower plate.
Find the reason for the bag dust collector smoke and dust, according to the air outlet smoke and dust with electromagnetic pulse valve, pulse controller action corresponding to the number of bits to determine which. On the cover bag dust collector can also use a flashlight from the upper box body observation hole to find out the leakage of the bag; or open the cover and then open the pulse controller, in the process of blowing from which venturi found in the smoke and dust, is which dust bag leakage. Then according to the problem to deal with.
Bag filter replacement dust bag, to check and analyze the cause of its breakage. If it is because the welding of the dust bag cage is not secure, or it is necessary to replace the dust skeleton with a new one. The cloth bag dust collector cannot work with broken dust bag, otherwise it will accelerate the scrapping of the cloth bag dust collector. When a small area of individual dust bag damage occurs, in order to save money, it is recommended that you can use the old bag or the same material of the new filter cloth will be used to fill the holes, fill holes in the method is to use silicone rubber mixture for bonding, as long as the use of adhesives temperature, chemical properties and process conditions can be adapted to.
Installation of bag filter bag skeleton, on the cover of the pulse bag filter to pay attention to the porous plate on the ash removal, in order to prevent the interface and the porous plate is not tight resulting in air leakage, affecting the purification efficiency; blowing pipe blowing holes should be aligned with the center of the venturi, to ensure that the effect of spraying at the same time, but also to prevent early breakage of the dust bag. The side of the open door dust collector should pay attention to the upper and lower hanging mouth loosening and tightening properly, in order to prevent the lower hanging mouth falling off and screwing bad threads.
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