First, the automatic water supply device technology status and characteristics At present, the micro-sprinkler irrigation system used in automatic pressure water tank device, which uses the pump type is generally self-priming centrifugal pumps, deep well pumps and submersible pumps. Self-priming centrifugal pump is characterized by compact structure, simple operation, but the manufacturing process is complex, long self-priming, low efficiency, high operating costs; deep well pump and submersible pump although has a certain lift, but the effluent flow is small, especially Deep well pump, using long drive shaft, consume more steel, expensive, difficult installation and maintenance. In this paper, the centrifugal pump automatic water supply device is to solve the pump in the automatic water supply system deficiencies, which is characterized by less investment, high efficiency, quick start, high head high flow, low operating costs, easy maintenance and repair machinery.
Second, the working principle
The working principle of ordinary centrifugal pump is to use the principle of centrifugal force to work, that is, before the start of the pump and inlet filled with water, or use the vacuum pump to start again. Ordinary centrifugal pump automatic water supply device works are: the use of hand-pressure well pump and pump suction pipe air once cleared, through the check valve and gate valve and other facilities always keep the pump and pump suction pipe is full of water, at any time Can be activated.
Third, the installation process and technical requirements
1. Installation process
On the surface of the well pipe, the first installation of the bottom valve connected well pipe tee, in turn above the well pipe installed valve and hand kill well; followed by the connection pump and check valve; the third re-connect the water supply pipe 9 and the water supply valve , Install pressure gauges on the pressure tank, and install distribution facilities on the ground.
2 technical requirements
(1) The bottom valve of the well pipe is installed on the ground.
(2) Pressure tank outlet pipe elevation - pump outlet pipe elevation ≥ 0.5 m.
(3) The water level in the pressure tank before the first water supply is higher than the water level in the water pipe of the pump.
Fourth, technical analysis and benefit analysis
Technically,
(1) The device compared with ordinary centrifugal pump, to solve the centrifugal pump every time you start the irrigation or use vacuum pump pumping process problems;
(2) can be frequently started, easy to automate the implementation;
(3) No self-absorption process, start quick, reduce the mechanical loss of self-absorption process;
(4) compared with self-priming centrifugal pumps, the use of ordinary centrifugal pumps with high efficiency advantages;
(5) compared with the deep well pump and submersible pump, its flow, lift high.
From the efficiency,
(1) This device solves the investment of manual or purchased vacuum pump which starts the irrigation several times by a common centrifugal pump;
(2) Reduce the operating costs of investment in water source projects and other ancillary facilities;
(3) Easy maintenance and installation.
Fifth, the scope of application
For a certain size of water-saving irrigation district, tap water in rural areas and urban water projects and industrial water district and other water sources can be applied to ordinary centrifugal pump automatic water supply device. Groundwater irrigation areas, underground pipe depth should not exceed 10 meters (including the pump house depth).
Sixth, the conclusion
Improve the performance of ordinary centrifugal pumps, and broaden the scope of application.
Xinxiang SKF Super abrasive Diamond Grinding Wheel
Features:
★Rpm≤1500: flatness≤0.01mm/600mm
★High parts accuracy:flatness, parallelism≤0.003mm, better parts surface, high efficiency
★Matched used in double side surface grinding machines like SKF, Lapmaster, Peter-wolters, KOYO, NESSEI, DISKUS-WORKER, etc.
★ Suite for many kinds of materials, lower total cost and cleaner work room.
Diamond Grinding Wheel
Diamond Grinding Wheel,Diamond Grinding Plate,Diamond Grinding Stone,Large Diameter Grinding Wheel
Xinxiang SKF machinery Co., Ltd. , https://www.grindingmachine.nl