伊人色网站,色综合久久综合欧美综合图片 ,国产精品久久久久久久成人午夜,国产精品自在线免费,热の国产AV,国产伦精品一区二区三区视,国产精品黄网站免费观看,香蕉成人啪国产精品视频综合网,四虎永久免费影院在线,亚欧AV无码乱码在线观看性色

In the dry season, large-scale intelligent sprinkler equipment began his work. Today, I will explain to you the role of drip irrigation equipment, the use of places and installation steps. Hope you want to know some help.

The installation of drip irrigation system can be divided into eight steps: trenching, pipe installation, water pressure test, trench backfilling, nozzle installation, pressure equipment installation, other equipment installation, system debugging. Note the following during installation:

1. Trench digging: trench depth should meet the requirements of equipment installation, external pressure and winter drainage; Keep the groove as narrow as possible; The groove should be straight, and the slope of the groove bed should be as far as possible to the valve well or the drainage well; The excavated soil can be stacked in layers on one side of the pipe trench; There should be no hard debris in the trench; When digging a trench, the trench depth should meet the pressure requirements of the roadbed.

Second, the installation of sprinkler irrigation equipment pipeline: before installation need to check the pipe fittings, eliminate deformation, cracks, damaged products; Cross pipe and slot bed should be combined well, do not hang; The installation Angle of standpipe should meet the design requirements; When multiple pipes are in the same ditch, try to avoid overlapping of different pipes; When the working pressure of the pipe network is large, strengthen the concrete pier for the elbow and tee as much as possible.

Third, pressure test: pressure test is a more important part of the pipeline installation work, in order to detect the tightness of the pipeline connection. During the test, the test pressure should be determined according to the working pressure of the system design, and the test should be carried out in strict accordance with the relevant technical specifications and the test record. During the test, keep away from valves and fittings when performing pressure and balance tests.

Fourth, trench backfill: After the pressure test of the pipeline is qualified, the trench can be backfilled. First backfill about 10cm thick sandy soil, and then fill in layers. If the excavated soil is stacked in layers, the backfill should also be sequentially layered and backfilled.

5. Installation of sprinkler head: Before installation of sprinkler head, water should be flushed out all dry pipes and branch pipes to remove sediment and foreign matter in the pipe to avoid debris blocking the sprinkler head. The height of the nozzle should be level with the ground; The installation position of the sprinkler at the boundary of the irrigation area and special points should consider the rationality of positioning to prevent the problem of leaking or spraying out of bounds.

Pressure equipment: pressure equipment is the heart of the pressure type sprinkler irrigation system, if there is a failure, the entire sprinkler irrigation system will be paralyzed, in the installation, need to be careful. Commonly used pressure equipment are all kinds of pumps and constant pressure water supply devices. When installing the pump, the stability of its work should be considered, and the appropriate foundation should be selected. The concrete structure can generally be used as the ideal irrigation pump foundation. Install a vacuum gauge near the inlet of the pump and a pressure gauge near the outlet to check the running status of the pump. The installed motor should be matched with the water pump used, and the appropriate cable should be selected for connection.

Other equipment installation: Other equipment refers to a variety of manual and automatic valves, controllers, sensors and other control and auxiliary equipment. When installing such equipment, the installation instructions and precautions should be carefully read, and the installation joint should be waterproof after the installation of the appropriate wire.

8, system debugging: After the installation of the entire system is completed, it is necessary to adjust the system and other tests according to the design and equipment technical documents, and the test results can be formally delivered.

Sprinkler irrigation equipment is an irrigation method that sprays water with a certain pressure into the air by means of pumps and pipeline systems or by using the drop of natural water sources, dispersing it into small droplets or forming mist to fall on plants and the ground. Sprinkler irrigation system from the source of water and transport, distribution to the field, the implementation of spraying irrigation water facilities. It is composed of three parts: water source engineering, water distribution channel or pipeline and spraying machine.