The design and development of science and technology personnel in the flood control bureau is aimed at the difficulty of drinking water in rural areas. According to the principle of using 600 drilling rigs and woodworking hand drills, the essence of geological drilling rigs has been collected. After years of trials and improvements, the company has finally succeeded in investing less and quicker. The operation is simple, small and flexible, and is suitable for the micro drilling machine for drilling wells in the hilly areas. Recently, the aircraft won the second prize of the 2005 Science and Technology Achievements of Shehong County.
The drilling depth of the machine is 20 to 30 meters, the maximum diameter is 0.3 meters, equipped with diesel engine 6 to 12 horsepower, electric screw pump, etc. The whole machine weighs 160 kilograms, the production cost is 5,000 yuan per unit, and the cost per well is 10 yuan to 15 yuan. It is 3.6% of the cost of the 600 type drilling. He was promoted at the Sichuan Provincial Farmland Infrastructure Conference. Governor Zhang Zhongwei personally operated the machine and said it well.
During the “Tenth Five-Year Plan†period, 242 sets of drilling rigs have been produced. In the townships and villages of 592 villages, there are 45,651 micro-machine wells in the county, which solved the difficulty and safety of drinking water for 261,000 people, allowing farmers to drink tap water and rest assured. Water has also solved the current worry that the rural areas are only old, weak and sick, and there is no water in the family. The machine is exported to Bazhong, Pyeongchang, Renshou, and dozens of cities and counties such as Zhongjiang and Yanting, contributing to the solution of rural drinking water in the hilly areas of the province.
Light Emitting Diode F5 In-line
1. Welding prerequisite: (The solder joint must be at least 2mm away from the resin root)
Dip soldering: Please complete the soldering once within 5 seconds at 260°C to prevent the resin from being immersed in the tin bath.
Soldering iron: Use a 30W soldering iron with the tip temperature not higher than 350℃, and the soldering can be completed once within 5 seconds.
Do not apply external force to the product during soldering. Pay attention to prevent the LED pins from being corroded or discolored, otherwise it will cause soldering difficulties. It is recommended to use it as soon as possible.
2. Use attention:
Lead forming must be completed before soldering, and the spacing between the device holes on the circuit board should be consistent with the electrode pins.
If the product is cut under high temperature, it will be defective. Please cut the lead at room temperature.
Before the soldering temperature returns to normal, the LED must be protected from any vibration or external force.
3. Electrostatic protection:
In-line LED
High-brightness blue, green, and white products are sensitive to static electricity. Please be aware that the surge of static electricity will damage or destroy the product. Please use a conductive pad to ground the task table in contact with the product; the tip of the soldering iron must be grounded. To be grounded; it is recommended to use an ion generator.
4. Cleaning:
Special care must be taken when cleaning the gel with chemicals. Some chemicals can damage the surface of the gel and cause discoloration, such as trichloroethylene and acetone. It can be wiped and dipped in ethanol, and the time does not exceed 3 minutes at room temperature.
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