SPECIFIC GRAVIFY DESTONER,  mainly used 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

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 stonefree 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.

 Technology 

TQSF Destoner is the suction type destoner, and its work principle is based on the difference in specific weight of materials.

The working table is covered with a woven wire mesh bed, through which air flows from below.

Heavy impurity such as stone are not lifted by the air cushion and stay on the mesh bed.

The vibratory motion of the table causes the heavy impurity transported to the beginning of the regulating plate at far end of the machine.plate at far end of the machine.

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.

Henan Institute Of Grain Machinery Manufacturing Co., Ltd. is established driven by the academy of Henan University of Technology. As a large joint-stock enterprise integrating technology, manufacturer and sales, our company is specializing in the production of grain and oil machinery, agricultural and sideline machinery. Cooperating with Henan Mechanical Design and Research Institute and Henna University of Technology (Former Zhengzhou Grain College), Henan Institute Of Grain Machinery Manufacturing Co., Ltd. has carried out the research and application of oil machinery, food machinery, grain machinery, construction machinery, and feed machinery, etc.

There are various departments in our company, like oil machinery design institute, grain machinery department, coarse cereals machinery department, oil press machine department, large complete oil equipment department, international trade department, machinery production department, etc.  The business involves food machinery, coarse grain machinery, small oil mill, grain and oil engineering design, equipment manufacture and installation, project contracting, technical services, new product development, and oil by-products deep processing, etc.

Located in the national industrial concentration area east to New Plain District, north Huanghe River, Zhengzhou City, Henan Province, our factory covers an area of 90000 square meters, owns 14 standard heavy industrial production workshop, more than 100 large and medium-sized metal processing, welding, assembly equipment, and more than 500 on-line employees, which includes more than 140 medium and senior professional management personnel and engineering technical personnel.

Based on scientific management method, excelsior manufacturing technology, and innovative manufacturing spirit, our company has grown into China's food, grains, oil machinery production and export base rapidly. The sales volume and comprehensive economic indicators ranked in the front of domestic industry. Our machinery has been exported to Russia, India, Nepal, Indonesia, South Africa, Ukraine and other 30 countries and regions.