The flow measuring instrument itself is affected by many factors, and the selection should be rationally selected according to factors such as fluid working conditions, installation requirements, environmental conditions, and economics.
1. Fluid properties. Different fluid media have different characteristics, and fluid properties mainly refer to fluid composition, temperature, pressure, viscosity and the like. According to the actual situation, gradually confirm the selection range. First, from the component analysis, it is known that the fluid is liquid, gas, steam, dirty dirt, etc., and the appropriate flow type is selected. Secondly, according to the flow range of the fluid, the pressure change, and the density of the fluid, the flowmeter model is judged. Any change in the fluid parameters will affect other parameters, such as the viscosity of the fluid, which is affected by temperature and pressure. It is important to understand the accuracy of the fluid properties.
2. Security performance. Industrial products must be safe. If the medium to be measured is high temperature and high pressure, high temperature and high pressure resistant products must be selected. If the corrosive medium is measured, the appropriate lining material must be selected according to the corrosive strength. The environment of the flammable gas should be an explosion-proof type instrument.
3. Energy saving. The pressure loss before and after the fluid passes through the flow meter, the smaller the pressure loss value, the better the energy saving.
4. Process parameters. Select the model and specifications of the instrument according to the process parameters. The process parameters are the final basis for determining the specific model and specifications of the instrument. The process parameters should be detailed and clear. If there are slight errors, the measurement data of the instrument will be inaccurate or even impossible to use.
5. Accuracy and economy. The flow measurement system is required to have small error, high accuracy level, good repeatability and wide range ratio. Generally, the flowmeter with relatively stable performance, good repeatability, long service life and wide range-to-range ratio is beneficial to increase the measurement parameter adjustment of the process equipment in the later stage, thereby reducing investment. The flowmeter with high system precision has a relatively high price, and within the scope of ensuring the accuracy of the process requirements, the comprehensive maintenance cost is comprehensively selected. The calibration of the flowmeter is very important. Since most of the flowmeters have flow coefficient and gauge constants that are physically calibrated, the data of the calibration coefficient directly affects the accuracy of the operating parameters. Therefore, it is necessary to select the manufacturing unit capable of performing physical calibration. .
6. Installation environment. The on-site installation environment mainly refers to measuring the diameter of the pipe, the length of the straight pipe section, whether the pipe is vibrating, whether there is strong magnetic field interference and high temperature radiant heat.
7. Media conditions. Special attention should be paid during the production process. The flow direction of the fluid may change. In some processes, the fluid flow will change temporarily. If there is a change, a series of measures should be taken to prevent it. You can consult the flowmeter manufacturer for guidance.
Product Description
Grain cleaning machine Gravity Stone Remover
after raw material cleaning in grain processing plants, to grading grain, concentrate to clean impurities, (such as blighted wheat, small corn cobs, etc.) and to remove sand, mud. It use wind, vibrating and sieving effect matching technology, to be high efficiency, great performance on grading and separating gravel, mud pieces, low power consumption, no dust leakage, low noise, easy operation and maintenance.
Features
1. Advanced design and excellent fabricating
2. Reliable and excellent stone separation and efficient cleaning
3.High specific capacity
4. Easy operation and maintenance
5. Two options: with or without air-recycling system.
6. A fan is equipped on the air-recycling type and a special separator is installed ahead of the fan. The separator deflects the aspirated air through a lamellar system so that dust and chaff are separated from the air and dischar
ged by an airlock valve while the cleaned air is recycled by the fan in the air return pipe to the destoner
Application
1.The machine is designed for separating stones from a continuous product stream
2.On the basis of differences in specific gravity, reliable removal of highdensity impurities such as stones and pieces of metal and glass is achieved.
3. Versatile application in flour mills, rice mills, feed mils and seeds selection processing.
Principle
1.The sieve box which is normally equipped with two layer sieves is supported by hollow rubber springs and is caused to oscillate by one or twovibrators depending on machine execution.
2.The grain is spread by a feeder across the entire width of the machine, and then the product stream is stratified on the pre separation screen according to its specific gravity by the oscillating motion of the screen and by the air flowing through the product from bottom to top. The light particles collect at the top, and the heavy ones including the stones at the bottom.
3.The lower layer with the heavy particles flows upward and is fed to the final separation zone of the bottom de-stoning screen. Final separation of the stones from the grain is accomplished by a countercurrent of air.
4. The stone free product streams on the two screens float on cushions of air, flowing slowly toward the product outlet, and then are discharged through the squeezed rubber valves.
5. To achieve the optimum degree of separation, the inclination of the screens, the air volume and final separation can be adjusted accordingly.
The process of flour milling:
The process of flour milling (from corn to milled into corn flour) usually consists of the following:
1. corn storage (silos, or warehouse)
2. cleaning system (sifter, destoner, seprater, magnet, scourer, etc)
3. dampening (dampener, conditioning silos, etc)
4. milling system (roller mill, plansifter, purifier, impact detacher, etc.)
5. Flour pressure and blending system (if need)
6. flour packing and stacking
DingZhou YongSheng Grain and Oil Machinery Co., LTD is a professional company combining research and development design, production and sales as a whole. The company has first-class oil equipment manufacturing base, professional oil technology engineer and professor, possesses advanced production technology and sophisticated equipment, All the mechanical parts are manufactured by our company.
The complete sets of oil equipment that we manufactured, relying on many domestic scientific research institutions. Advanced technology, suitable for making all kinds of plant oil. From the raw material of cleaning up, prepressing, leaching, refining and the production processing of by-product (such as Phospholipids engineering, protein engineering), is totally a dragon design and production, has created considerable economic benefit and social benefit for the user and society more than 40 years. Company new development of biodiesel equipment technology in recent years, has put dozens of sets on the market, obtaining good economical benefits both In the domestic and overseas. At present, we have hundreds of successful installation operation of the oil equipment engineering experience, can design and product according to the difference of the user's economic condition. raw material. regional, install oil equipments.
YongSheng comapny with scientific management method, strives for perfection the manufacturing process, innovative manufacturing idea, fast grows and become the grain and oil machinery production and export base in China. Company products are exported to Russia, India, Nepal, Indonesia, South Africa,Tanzania,Ethiopia,Ukraine, kazakhstan, Pakistan, Iran, north Korea, Vietnam, France and the European Union and so on more than 30 countries and area.
Grain Destoner,Grain Stone Removing Machine,Seed Cleaning Machine,Grain Destoner Gravity Machine
Hebei Huipin Machinery Co.,LTD , https://www.oilpresschina.com