KAIFENG RAINBOW MACHINERY Co., Ltd is specialized in production of machines used in food, feed, farm and tech field. We have our own professional research and development department, and specialized production base.
Relying on the strong industrial and technological superiority and excellent transportation advantage,our company has had strategic development.
High quality is our obligation. Great service is our mission. We warmly welcome clients around the whole world to visit our plant and our Office! 

Introduction of Gravity grading destoner

Wheat  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 folws from below. Heavy impurity such as stone are not lifted by the air cusion and stay on the mesh bed. The vibratory motion of the table causes the heavy impurity transported to the begianing of the regulating plate at far end of the machine.     

Features of Gravity grading destoner

1. Modular design for a variety of series and models

2. Separating stone and other heavy impurity with similar size to grain

3. Dual separating decks for high capacity and superior cleaning outcome  

4. Adjustable screen deck slopes with integration of air speed for processing requirement

5. Screen deck designed with a range of shaking strikes and angles for process flexibility

6. Unique design for preventing grain back flow (Patent: ZL201020577278.2) and grain leaking from stone discharge port

7. Dual motor vibrators driving system

8. Durable rubber or spiral spring support for stable operation and energy efficiency

9. Laser cutting applies to sheet metal components for quality and accuracy

10. Carbon dioxide gas shielded welding workmanship

11. CNC machining centers ensure precise fabrication 

12. Powder coated parts and components for best quality and duration

Parameter of Gravity grading destoner

About packaging, for small size or single machine, we can offer free fumigation wooden case with steel frame, it not only can protect machine from damage, but also avoid checking when exporting.
For multiple machines or production line,it's better to loaded in standard container 20GP, 40GP, 40HQ, unually it needs wrapped with plasitc firstly, then loaded in container.
We can offer EXW, FOB and CIF terms.

EXW: You arrange the shipping details from our factory to your port by yourself.

FOB: We arrange freight transport to Qingdao, Shanghai or other ports of China, then you arrange the shipping details from China port to your country port.

CIF: We arrange all shipping details to your country port, and ensure machines smooth arrival.

1. Help you choose the most suitable machine.
2. Making the machine according to your request.
3. Give you machine’s details and video for help you use the machine more better.
4. One year warranty
5. Quality problem,we will send you the accessories.
6. Free repair whole using life without extra charge.

 *How do you guarantee I can receive the goods that ordered after make the payment?

Please rest assured that you will receive the goods in time, we are a legally established company supervised by the government, and is registered in customs of China and China Chamber of International Commerce. Besides, we are the golden member of Alibaba and has been checked by the third party as the real and legal company, what is more important, honesty and trustworthiness is our basic principle and our company life.

* How to make the payment?

Normally, when the order value is below USD10,000, we accept the payment by T/T or Western Union or Cash, L/C will baccepted when the order value is over USD10,000. For T/T, the customer can choose 100% in advance or 30% in advance, and pay the 70% balance before shipment.

*Date of delivery?

We will arrange the production and shipment as soon as possible when we received the deposit, and update the information with the customer on line.

*Suitablity of motor?

As there are many volatage standards in different countries in the world, so the original motor equipped on the machine would not suitable to be used with the customer's local power supply, when this situation happend, please send us your exact information of the power supply available, then we can modify the motor accordingly.

*After sale service?

For most of the machines, the quality is guaranteed for one year since the date of shipment expet wearing parts, we supply the on-line service for all the machines, and also supply the spare parts all the time with cost price, for some complicated machine or plant, we can send our engineer overseas too.