Sprinkler irrigation system installation and maintenance
A sprinkler system with good performance, in addition to scientific and reasonable design, should also have the correct construction and installation and careful maintenance in order to achieve the desired results. Here, we will remind you of problems that need attention in the construction and installation and maintenance. First, the installation of the pipe The current commonly used pipe is mainly galvanized pipe and U-PVC pipe. Compared with these two materials, U-PVC pipe is more smooth, smooth, and has a 30 to 40% higher flow rate than galvanized pipes of the same diameter. It is non-blocking, rust-free, corrosion-resistant, weather-resistant, lightweight, and lightweight. Only 1/7 of the galvanized pipe, the price is cheap, can greatly reduce the project cost, and the construction is simple, convenient, without the need for regular pipeline construction personnel and thus has become the main material of the sprinkler irrigation project. The U-PVC pipe is taken as an example for illustration below: 1. Laying out the drawing line According to the drawing, the actual position of the pipe is determined, and the lime drawing line is used as a mark. 2. The ditching needs to open a 3030 cm (deep depending on the thickness of the permafrost layer) pipe ditch, requiring the formation of ditch bottom (if the lawn has been built, you need to remove the lawn). The bottom of the ditch preferably has a certain slope in the direction of the water flow for the purpose of drainage. 3. The pipeline connection starts from the water source and is first in charge of the rear branch pipe. (1) Operating procedure of U-PVC pipe for viscose socket (a) Determine the length of the pipe according to the drawings (b) Keep the end face vertical and flat (c) Wipe the adhesive surface of both ends with sandpaper (d) Depth of the required depth engraved mark (e) Brush evenly on the specified surface of both ends with a special U-PVC adhesive (f). Insert the pipe into the socket until the mark line and rotate it by 90 degrees to make it stick. Remove air bubbles from the dough, and remove excess adhesive (2). If it is a U-pvC pipe, it will be easier to install. Just pay attention to the thicker side of the seal. On the line, soapy water can also be applied to the pipe to be inserted to enhance lubrication. Second, the nozzle installation 1, the height of the nozzle if it is a buried telescopic nozzle, then the top of the nozzle should be level with the ground. It should be noted that if it is a newly-planted lawn, the natural settlement of the bed should be considered. 2. The activity has a high requirement for the height of sprinkler heads in some sports venues such as golf and football pitches. At this time, it is necessary to consider the use of activities in order to flexibly adjust the height. 3, to maintain the vertical level on the installation to ensure that the nozzle vertical, shrub nozzles should be fixed with a bracket. Third, the installation of the control system 1, with a color marked cable connection controller and solenoid valve The number of cables you need is: each solenoid valve requires a plus a common line. For example: You need to irrigate 5 areas (5 solenoid valves), then at least 6 long enough cables are needed to connect. 2. The connecting cable should be laid along the path from the controller to the solenoid valve. If possible, it is best to sheath the cable to prevent damage. A coil is reserved at the corner of each cable to ensure that the cable is not too tight and prevents thermal expansion and contraction. 3, when connecting the solenoid valve, it is necessary to prevent the connector. Each solenoid valve requires one cable and a common line to connect the other connector on each solenoid valve. 4. The “AC†on the controller is connected to the power supply (AC), “C†is the connection to the common line, and “1†and “2†are the terminals that connect each solenoid valve. 5. When selecting a controller, consider reserving one or two stations for future expansion. For example, you need to water the 6-station irrigation area. You may consider using 8 stations when selecting the controller. 6. According to the working principle of the solenoid valve, the force that drives the solenoid valve to open is the pressure of the system. Therefore, special attention must be paid to: If the flow and pressure of the pipeline are insufficient, the solenoid valve may not work properly. Fourth, the system debugging Each system should be installed after the initial commissioning and comprehensive testing, if any problems should be adjusted in time, only the system has reached the design requirements in order to backfill the soil, leveling the site. V. System maintenance Frequently inspect the water source and keep the water source clean. In particular, check whether the water source filter is in good condition to prevent sand particles from entering the piping system and causing the nozzles to clog. When the sprinkler system is turned on, the main valve should be opened slowly so as not to cause excessive bursts of piping and sprinkler heads. In the routine maintenance and care of the lawn, special attention should be paid to avoid mechanical damage to the sprinkler, and in particular, rotary blade mowers can easily cut off the sprinkler and prevent man-made damage. During the winter season, precautions should be taken to prevent freezing.