Views: 0 Author: Site Editor Publish Time: 2019-11-19 Origin: Site
Sprinkler irrigation is an important technical measure for the development of water-saving irrigation agriculture. It has been widely promoted in arid areas of China and played an important role in the continuous and stable increase of agricultural production. However, to better utilize the advantages of field sprinkler irrigation system, it must also Pay attention to the following problems in proper use and maintenance. (1) Check whether the vertical pipe of the nozzle is vertical and the bracket is stable before use. The vertical pipe will not affect the reliability of the nozzle rotation and the uniformity of the water distribution; the bracket is unstable. , the operation may be dumped by the nozzle spray water, damage the nozzle. (2) Before starting, first check whether the valve on the dry and branch pipelines have been closed, then start the pump, after the pump reaches the rated speed Then slowly open the valve on the main valve and each branch pipe to ensure that the pump starts under low load, avoid overload, and prevent the vibration caused by the water hammer. (3) Always pay attention to monitoring the sprinkler system during operation. The pressure of each department requires that the hydraulic loss of the main pipe should not exceed the economic value; the pressure drop of the branch pipe must not exceed 20% of the maximum pressure of the branch pipe. (4) The sprinkler should be observed at any time during the sprinkler operation. Whether the degree is appropriate, the surface of the soil shall not produce runoff and water accumulation. Otherwise, the sprinkler irrigation intensity is too large. The working pressure should be reduced in time or the nozzle with smaller diameter should be replaced to reduce the sprinkling intensity. (5) In the whole sprinkler operation Monitor the uniformity of irrigation at any time. If necessary, evenly arrange the rain gauge on the spray area. Actually measure the combined uniformity of sprinkler irrigation. The value should be greater than or equal to 0.8. If the measured uniformity is poor, try to improve the whole irrigation season. The method of uniformity of sprinkling irrigation is to make up for it. The specific method is: when the second sprinkling is carried out, the nozzle is arranged between the two spraying points of the first sprinkling, that is, the method of changing the position of the spraying point is used to improve the sprinkling irrigation of the whole irrigation season. Uniformity. In windy areas, sprinkler irrigation should be carried out in the absence of wind or wind. If it is necessary to spray in the wind, it should be sprayed in a downwind or fan shape to minimize the impact of wind on sprinkler uniformity. When the wind reaches the third level, the sprinkler irrigation must be stopped. (6) Strictly observe the operating procedures during operation, pay attention to safety, especially to prevent the water tongue from being sprayed onto the belt, and pay attention to avoiding the line when moving the tube. (7) During operation, it is necessary to check all parts of the sprinkler system at any time. After each sprinkling is completed, the machine, pump and nozzle should be cleaned. The rotating parts should be refueled and derusted in time. Discharge the water in the pump and the tube to prevent frost cracking. (8) When the sprinkler season is over or the sprinkler equipment is not used for a long time, the sprinkler system should be thoroughly inspected. The nozzle should be disassembled and disassembled to check the rotation of the hollow shaft, sleeve shaft and washer. Whether the parts are abnormally worn or damaged, the damaged parts should be repaired or replaced in time. After the whole system is cleaned, oil is applied to the hollow shaft, the sleeve shaft, the rocker arm spring, the rocker shaft and the fan-shaped machinery, and then installed; the worm gear type The (impeller type) nozzle should be cleaned and inspected and varnished on the worm, gear and hollow shaft, sleeve shaft, etc.; the water in the pipeline should be drained, the rust-proof layer should be repaired, and the moving hose should be rinsed off. Dry thoroughly, all equipment should be stored in a dry room after finishing.