The micro-irrigation system mainly includes four parts: water source engineering, hub engineering, water transmission pipe network and irrigation device.

In order to maintain the normal operation of the project and extend the service life of the project and equipment, the key is to use it properly and maintain and maintain it properly. The maintenance and maintenance of the micro-irrigation system is gradually carried out according to its composition, as follows:

First, water project

1. The water source project buildings have various forms such as underground water intake, river and channel water intake, and water storage in the pond pool. It is the primary task of water source project management to maintain the integrity of these water source engineering buildings and ensure reliable operation.

2. Regular maintenance of pumping stations, reservoirs, etc. Annual repairs should be carried out during the non-irrigation season each year to keep the project intact. Sand and other contaminants deposited on the reservoir should be regularly cleaned. Algae in open water in open tanks are prone to breeding. In the irrigating season, green locust should be put into the pool regularly to prevent algae breeding.

3. After the irrigation season is over, the water in all pipelines should be excluded, and the valves and wells should be sealed.

Second, the pump

1. Check whether the coupling between the pump and the motor is concentric before operation, whether the clearance is appropriate, whether the pulley is aligned, and whether the other components are normal and whether the rotation is flexible. If any problem occurs, promptly eliminate the problem.

2. Check whether the readings of various instruments are within the normal range during operation. If the temperature of the bearing part is too high. There are no leaks and air intakes in the various parts of the water pump and the water pipe. The suction pipe should ensure that no air leakage occurs and the water pump should be stopped before operation. Stop the starter first, then pull the switch.

3, the common failure of the pump can be roughly divided into two major categories of hydraulic and mechanical, to the possible failures, causes and treatment methods to be very familiar with, generally these contents are detailed in the pump specification.

4. Clean the traces of water after parking to prevent rust; periodically dismantle and inspect, and complete overhaul; when the water pump is used at the end of the irrigation season or in winter, the water drain plug under the pump case should be opened to drain the water to prevent rust. Frozen water pump.

Third, power machinery

1. Before starting the motor, check the insulation resistance of the windings to the ground; whether the voltage and frequency marked on the nameplate are consistent with the power supply voltage, whether the wiring is correct, and whether the grounding wire of the motor housing is reliable. The operating current during operation must not exceed the rated current; the temperature must not be too high. The motor should be dust-removed and kept dry and clean; regular running motors should be checked once a month and overhauled every six months.

2. The diesel engine should be filled with oil, diesel oil and cooling water before start-up; injection of unfiltered oil and diesel oil is strictly forbidden; after three operations cannot be started, or after the start-up operation is abnormal, the fault must be eliminated before starting the engine. After start-up, the speed and load should be gradually increased. It is forbidden to operate without air filter, black smoke and overload. When parking, the load should be gradually unloaded and decelerated. When the ambient temperature is lower than 5°C, after parking Cool water should be let off. When the diesel engine is put into storage, the engine oil, diesel oil, and cooling water should be drained, and the air filter, exhaust port, and tank port should be sealed to cover the body.

Fourth, the filter

In order to obtain a good filtering effect, it is necessary to frequently clean the filter, otherwise the pressure difference between the two sides of the filter will increase the particles through the filter into the system or break the filter, causing the system to clog. Commonly used filters are mesh filters and sand filters.

1, mesh filter

Check the filter regularly and find that the damage should be promptly repaired. At the end of the irrigation season, the strainer filter should be removed, brushed and dried for use.

2. Sand filter

The backwash of the sand filter is the backwash of the sand bed stream. The reverse flow causes the bed sand to float and tumble, and flush away the intercepted dirt. When backwashing, pay attention to controlling the speed of backwash water flow. In order for the flow rate of the recoil flow to be sufficient to turn the sand bed, only the filtered contaminants in the tank can be washed out and not washed out as a filter medium. After the end of the irrigation season, thoroughly backwash and disinfect with chlorine to prevent microbial growth.

Fifth, irrigation device

The irrigator clogging is the primary problem of the micro-irrigation system, and preventive maintenance must be strengthened.

1. Prevention of clogging

In the operation and management of the system, in addition to the above-mentioned regular maintenance cleaning filters, regular flush management and other preventive measures, the following measures should also be taken:

1 Regularly check the working condition of the emitter and measure its flow. The general decline in flow is the first sign of congestion and should be dealt with promptly.

2 Strengthen water quality testing, conduct regular laboratory analysis, and find solutions to the problems.

2, the treatment of congestion

1 Chlorination method: Chlorine dissolves in water and has a strong oxidation effect, which can destroy microorganisms such as algae and fungi. It can also react chemically with iron, manganese, sulfur and other elements to produce water-insoluble substances. Remove from irrigation water. Chlorination is a very cost-effective method for blockages caused by microorganisms.

2 Acid treatment: Usually used to prevent the precipitation of soluble substances in water, or to prevent the growth of microorganisms in the system.

When carrying out chemical treatment on the system, it must be noted that there are certain damages and toxic effects to the soil and crops. Improper use can cause serious consequences. It must be operated strictly in accordance with the operating procedures. It must be taken care of to prevent pollution of water sources or cause harm to humans and animals. .

The above is the maintenance and maintenance of the micro-irrigation system. In the actual operation, we must pay close attention to each step in order to receive good results.

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