How to supply power for small farm pumps

Type selection According to the local power supply situation, the electric power supply reliable area should select the electric motor, generally selects the squirrel cage type, only when the electric network capacity is very small, insufficiently guarantees the squirrel-cage type electric motor to start the situation, considers chooses the winding type. Protected in dry and dusty places; enclosed in splashing dust and splashing; sealed in flooding. When the pump pumping load is continuous and uniform, the motor should use a continuous working system, its speed should be consistent with the pump, easy to start directly, otherwise you can choose to use the indirect drive with a closer speed.
Strictly speaking, the choice of power for the power pump with high power needs to be scientifically calculated, but the choice of motor for the small agricultural pump can be based on past experience. The power of the general motor should be equal to 1.0-1.3 times that of the auxiliary pump. The power of the internal combustion engine should be equal to 1.3-1.5 times the power required by the supporting agricultural machinery. If it is too large, the big horse-drawn car wastes energy. If it is too small, it can easily damage the power machine with no movement or overload. If you have bought some power equipment in advance, you should give full play to the role of the existing power machine. When purchasing a new agricultural water pump, it is necessary to consider as much as possible to support the original power machine. In fixed units, the motor can be used within 75%-100% of the rated power. A diesel engine with a full-standard governor can reduce speed and power usage within its speed range.
Selection of rated speed The rated speed of the motor is determined according to the requirements of the pump. However, the synchronous speed of the asynchronous motor is usually not less than 500r/min. Therefore, a pump with a low speed must be equipped with a deceleration device.
Rated voltage of the selected motor The rated voltage of the selected motor should be consistent with the voltage of the power supply grid. The voltage applied to the three-phase asynchronous motor will work normally within the range of +10% to -5% of its rated voltage. In rural areas, the voltage of the low-voltage grid is 220/380V. Therefore, the small and medium-sized asynchronous motors used in rural areas are all low-voltage, and the rated voltage of single-phase motors is usually 220V and the rated voltage of three-phase motors is 380V.

Goji Berry is taken as one of the most famous plants, which can be both for medical and eating use. The history of goji berry up-picking and for eating use has a long history of 4000years in China. People from different social hierarchies, from the emperor to ordinary people, take goji berry as a good component of medical prescriptions. Goji berry enjoys a great popularity from ancient to modern times, at home and abroad and it has a long lasting and profound life preservation culture.

Ningxia Goji Berry enjoys a great fame around the global due to its high quality standard; meanwhile, it is the only protected product of geographical identity in China, goji berry has a great popularity describes as "goji berry of the world is in China, goji berry of China is in Ningxia and Ningxia`s goji berry is the best".

Specification:

 

Ningxia goji berry is categorized into 5 levels for experimental use. The fruit particles are required to have evenness in shape, with juicy fruit but not dry particle with impurities, humidity or bitten by insect.

Top Level:≤ 250grains/50g   

Excellent Level:≤ 280grains/50g

Superfine Level:≤ 370grains/50g  

First Rate:≤ 580grains/50g

Second Rate:≤ 900grains/50g

 

2. Identification

 

Color: The color of Ningxia goji berry should be red or dark red and lack luster.

 

Shape: Ningxia goji berry has big spindle size in shape with thin skin and full pulp. The particle is somewhat above normal size with style trace at the front of the particle and white stipe trace at the bottom.

Flavor: Ningxia goji berry is astringent at first bite then sweet, without ill-smell.

Goji Berry

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