When the heat from the fire rises in the air, the heat activates the sprinkler headsPA As the liquid expands, it breaks the glass and activated the sprinkler head. These sprinklerheads are attached to a reliable system of water pipes that are typically built into the walls or ceiling.
We offer a wide range of water sprinklers for irrigation and jets that deliver performance season after season with great yields, consistent quality and crop production efficiencies.
Drip irrigation needs to pay attention to the following problems in use. First, when using for the first time, the pipeline should be cleaned for 5 to 10 minutes to prevent impurities in the drip irrigation pipe from clogging the water outlet. Second, the filter should be cleaned before each use to ensure that the filter is unobstructed. Third, each time fertilizing, dissolve soluble fertilizer in the container, and then enter the drip irrigation system through the fertilizer absorber through the suction of the self-priming pump. Fourth, the amount of irrigation water (irrigation time, irrigation frequency, water output) should be flexibly controlled according to the water demand of the crop, the dry humidity of the soil, and the weather conditions at that time. The amount of fertilizer supply must also be determined according to the actual situation, but it should be prevented that the concentration of fertilizer is too high to damage the root system. Fifth, after harvesting the crops, the drip irrigation tube should be kept properly. Generally, the drip irrigation tube cannot be folded or twisted, and can be placed on the side of the greenhouse (greenhouse) or rolled up and stored indoors.
1. Find out what impurities are in the irrigation water. Through the water quality test, the particle size, physical characteristics, concentration and other indicators of impurities can be obtained. These indicators will determine the filter type and maintenance method selected.
2. Determine the diameter of the flow channel of the selected irrigator, and use this diameter to select the filtering capacity of the filter.
3. Determine the peak flow of the irrigation system and use this flow to select the filter capacity of the irrigation filter system.
4. Compare the cost. If a filter is selected, the cost of automatic control and maintenance management must be added to the total cost, and the appropriate filter system should be selected after an economic comparison.
5. The mesh number of the filter, that is, the filtering capacity of the filter depends on the flow channel diameter of the irrigator. The filtering capacity of the mesh type and laminated filter is usually expressed by the mesh number, while the filtering capacity of the sand stone filter uses filtering sand Of the label.
1. Easy to cause blockage
The clogging of the irrigator is the most important problem in the current micro-irrigation application. In severe cases, the entire system will not work properly, or even be scrapped (perforating oil in the oil pipeline can cause the pipeline to be scrapped). The cause of the blockage can be physical, biological or chemical. Such as sediment, organic matter or microorganisms in the water, and chemical sediments. Therefore, micro-irrigation has strict requirements on water quality, and generally should be filtered, and if necessary, it needs to undergo precipitation and chemical treatment.
2. May cause salt accumulation
When micro spray irrigation is carried out on soil with high salt content or using salt water micro-irrigation, salt will accumulate at the edge of the humid area. If light rain is encountered, these salts may be washed into the root area of the crop and cause salt damage. At this time, micro irrigation should continue. In places where there is not sufficient washing conditions or where there is not enough rainfall in autumn, do not use micro-irrigation or use salt water micro-irrigation on high-salt soil.
3. May limit the development of the root system
Because micro-irrigation only moisturizes part of the soil, and the root system of the crop is oriented to water, it will cause the root system of the crop to concentrate and grow toward the wet area. In addition, in areas where there is no irrigation and no agriculture, such as the arid region in northwestern China, when applying micro-irrigation, the irrigators should be arranged correctly; they should be evenly arranged on the plane, and it is best to use deep burial in depth. In short, micro-irrigation is more adaptable and has a wider range of use. All areas should be selected according to local natural conditions and crop types.
1. Centrifugal filter
Working principle: the water supplied by the pump enters the tank tangentially through the water pipe, and the rotation generates centrifugal force, which pushes the sand and other solid particles with higher density to move to the pipe arm, forming a swirling flow, which causes the sand to enter the sand tank, and the fresh water enters downstream Outlet. The first stage of water and sand separation is completed. The clean water enters the mesh filter tank through the water outlet, elbow, and tee, and then performs subsequent filtration.
Use requirements: The sand collection tank of the centrifuge filtration systems is equipped with a sand discharge port. When working, the sand collection tank should be checked frequently, and the sand should be discharged regularly to avoid too much sand in the tank and the centrifugal filter cannot work normally. When the drip irrigation system is not working, the water pump stops to clean the sand collection tank. In winter, to prevent the entire system from freezing and cracking, all valves must be opened to drain the water.
2. Centrifugal mesh filter
Working principle: The filter works on the basis of gravity and centrifugal force to remove solid particles heavier than water. The water enters the centrifugal body tangentially, and the rotation generates centrifugal force, which pushes the sediment and other high-density solid particles to move toward the wall of the tube, forming a vortex, which causes sand and stones to enter the sand collection tank, and clean water to enter and exit The water outlet is ready to separate water and sand. Desilting should be carried out regularly, and the time of desilting should be determined according to the water quality.
Matters needing attention: 1. At the working moment of using the centrifugal filter when starting and stopping the pump, the filtration effect is affected due to the instability of the water flow, so it is often better to use it together with the mesh filter. 2. During installation, a straight pipe with the same diameter as the water inlet should be installed in front of the water inlet of the filter. The length is 10-15 times the diameter of the water inlet to ensure a stable water flow.
3. Mesh filter
Working principle: The structure of the mesh filter is relatively simple. When the size of suspended particles in the water is larger than the size of the filter mesh, it will be intercepted. However, when a regular amount of dirt accumulates on the net, pressure will occur between the filter inlet and outlet. Poor, when the inlet and outlet pressure difference exceeds the original pressure difference of 0.02MPa, the core should be cleaned. Water enters the mesh filter from the water inlet, firstly filters the porous particles through the coarse filter element, and then reaches the fine filter. After the impurities of the fine particles are filtered through the fine filter, the clean water is discharged from the water outlet
In the filtering process of the self-cleaning filter, impurities in the inner layer of the fine filter gradually accumulate, and a pressure difference is formed between the inner and outer sides of the mesh filter. When the pressure difference of the mesh filter reaches the preset value, the automatic cleaning process will start: the sewage valve opens, the hydraulic motor room and hydraulic cylinder of the main assembly release pressure and discharge the water; the pressure in the hydraulic motor room and the suction pipe drops significantly Due to the negative pressure of the mesh filter, the dirt on the inner wall of the fine filter is sucked through the suction nozzle, and the water mesh filter power motor flows into the hydraulic motor chamber and is discharged by the sewage valve to form a sewage suction process. When the water of the mesh filter flows through the hydraulic motor, the sewage suction pipe is driven to rotate, and the sewage suction pipe is driven by the hydraulic cylinder piston for axial movement. Completely cleaned. The entire cleaning process will last for tens of seconds. The blowdown valve closes at the end of the cleaning, the increased water pressure will return the hydraulic cylinder piston to its initial position, and the mesh filter begins to prepare for the next flushing cycle. During the cleaning process, the normal filtering work of the filter machine is uninterrupted.