Spirals are mainly used for stirring, mixing and other functions in pipeline transportation. The spiral surface of the screw conveyor has a solid spiral surface. , belt spiral surface and blade spiral surface transparent form. Screw Conveyor&Compactor,Quality Screw Machine,Automatic Conveying Feeder,Shaftless Screw Machine Wuxi Feiyiya Environmental Protection Technology Co., Ltd. , https://www.feiyya.com
Based on the success of the experiment, Tonghai County Economic Development Station carried out demonstration and promotion of green prevention and control technologies in Dashu Village, Tonghai County, and achieved good results. Field investigation and test records show that the green prevention and control technology demonstration area adopts integrated control measures such as agricultural control, insecticidal lamps, insect nets, sex attractants, yellow boards, and biological and bionic pesticides to control pests, and their field pests The population was significantly reduced, and the use of chemical pesticides was significantly reduced. The number of chemical pesticides per vegetable was reduced by 2 to 3 times from the conventional production area, and the average cost of 667 m2 was reduced by 70.07 yuan. At the same time, the pesticide residues in vegetables are reduced, the quality of vegetables is improved, the pollution to the agricultural ecological environment and the human living environment is reduced, natural natural enemies are protected, and they have good economic, social and ecological benefits.
Tonghai County implemented a grass-roots agro-technical popularization project to utilize sexual attractants that mimic nature's insect sex pheromone and release it into the field through a release device to trap and kill the bionic high-tech products of heterosexual pests. The technology of sexual inducement prevention is to induce male moths to traps and kill male moths through the release of synthetic sex pheromone by lure cores, which is a new type of prevention and control technology for the purpose of pest control. The technology does not touch the plants and agricultural products in the process of trapping and killing insect pests, and there is no worry about pesticide residues. It is one of the preferred methods for modern agricultural ecological control pests. It plays a very important role in promoting the development of modern scientific agriculture.
The cold rolling mill is an advanced equipment that continuously rolls blades from strip steel. By adjusting the position (roll offset, feed height, roll pressure, guide wheel, etc.), it can roll out blades of various specifications required.
Advantages of cold rolling layout:
It has the advantages of high production efficiency, saving raw materials, good blade quality, high hole diameter, and good wear resistance.
The structures that affect the rolling shape include the material and thickness of the strip, the offset of the roll, the feeding height, the rolling force of the roll, the different specifications of the guide wheels and blades, and the increase in the temperature of the roll during the rolling process. After years of construction, the contract developed this continuous cold-rolled propeller, which has the advantages of smooth surface, high hardness, wear resistance, one-time forming, and continuous no welds.
With the improvement of living standards, the awareness of safe consumption will gradually increase, people’s requirements for the safety and quality of vegetable products will also become higher and higher, and the green prevention and control technologies of pests are also very popular in recent years. The National Agricultural Technology Center is also In the gradual promotion of such prevention and control measures, focusing on key crops, major pests and diseases, the organic combination of the implementation of biological control, ecological control and other safety measures. The combined use of these measures can reduce the use of pesticides, improve the control of pests and diseases, increase the quality of vegetables, protect the ecological environment, and promote sustainable development.