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| Conventional washing machine function and improvement of wheat ---- Chinese flour Information Networ | | News source:www Reads:549 AddTime:2009-10-14 21:57:19 Collects this page |
| In the milling process, the washing machine wheat plays an indispensable and important role. In recent years, with the introduction of Western equipment, wheat, dry-cleaning process has also been copied in.. Practice has proved that this is not a pure dry wheat Jingxi Cleaning Process in China does not fully applicable. In a baking food (bread, biscuits) as the main body of the country, people of flour whiteness, purity and other indicators are not sensitive; However, in the cooking and food (bread, noodles) as the main body of our country, people of flour whiteness, purity, ash and other indicators are abnormal picky. As market competition becomes more intense, flour whiteness as many indicators of the "Focus", a number of manufacturers in order to achieve whitening, ultra-white effect, added too much brightener; there are some manufacturers even at the expense of efficiency, in order to reduce flour extraction rate to improve the whiteness. However, after testing found that when we do everything possible to have bleached the pigment in the endosperm, when oatmeal or not the surface of the dust cleared, so the flour although as intermediate products "by" the white, but once made into food, then prototype Bi now, manufacturers have lost their credibility. In the competition, a number of small factories timely adjustment process, addition of wheat washing machine, receive immediate results. More manufacturers and work hard to function on the washing machine to re-examine wheat position to resume wheat washing process. However, subsequent washing machine some of the shortcomings of wheat are also exposed. First, stand-alone washing machine wheat yield too small, and the growing medium and large process equipment is not complete; followed by wheat washing machine water consumption, emissions are also larger, and increasingly scarce water supply and environmental protection requirements suited.
An existing washing machine to be improved wheat
The existing wheat washing machine has two functions: First, remove the light-mixed, that is, wash away the surface of dust grain of wheat; second is to remove re-mixed, that is, to remove sand and gravel. Process in a number of small factories, because of tight plant locations, a washing machine I was able to rock again Mai wash wheat, a dual-purpose machine is acceptable. These small and medium factories generally small towns or rural areas, the contradiction between its water and sewage is not very prominent. However, in some medium and large plants should weigh the pros and cons for the corresponding scientific validation.
First of all, the traditional washing machine to wheat stone feature is the use of buoyancy in the water and rely on the density of wheat and sand and gravel to achieve a different, and it needs to consume adequate quantities of water.
Second, the existing mechanical function of the proportion of skilled in the proportion of grade Stoner and Stoner, have already reached a considerable level and the substantial effect of the process.
Third, the increasing tension of water supply, the price of water rising from a costing point of view with the washing machine to the stone wheat will pay a higher price.
Fourth, from the perspective of environmental protection and sewage treatment from the source, to the sewage less, we must first use more water.
Pros and cons of various aspects of synthesis conditions, I believe that wheat washing machine should be focused around improving efficiency, and expand the single output, reduce water consumption, reduce pollution, make the necessary improvements.
Two processes affect the washing machine effect of wheat Analysis of the Factors
Wheat in the washing machine, water, wheat, wheat auger and washing processes affect the effectiveness of three elements. To study the correlation between the three elements, is to improve the washing effect of the key wheat machine technology.
2.1 grain of wheat and the relationship between flow
Obstacles encountered when the fluid flow can occur when fluid separation, and a sharp decline occurring at a rate behind the backwater region, the formation of eddy current, called the vortex, this area called wake zone. Wake vortex zone created between fluid connection with the external role of shear stress to maintain its campaign to consume a large amount of fluid mechanical energy and generate a corresponding pressure drop. Wheat washing machine is running, this water flow and the grain of wheat (barrier) between the role and rotating auger and close, therefore need to examine the solid - liquid system, mixing power.
2.2 Solid - Liquid Systems Mixing Power
| | Total:2 pages page: 12 |  |
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