The principle and control mode of fully automatic boiler water softening equipment

　　The fully automatic boiler water softening equipment has time control mode and flow control mode. The fully automatic boiler softened water equipment is a pre-treatment device for raw water launched in response to the problem of scale formation in boilers. It can remove calcium and magnesium ions from the raw water, as well as elements that cause scale formation in boilers. The technical indicators are strictly required, and the effluent quality meets the national standards for low-pressure boiler feed water. The current application scope is getting wider and wider.

　　(one)The principle of fully automatic boiler water softening equipment

　　Since the hardness of water is mainly formed and represented by calcium and magnesium, cation exchange resins are generally used(Water softener)Take the waterCa2+,Mg2+(The main components that form scale)Replace it out and let it enter the resinCa2+,Mg2+The increase, resin removalCa2+,Mg2+Its efficiency gradually decreases.

　　When the resin has absorbed a certain amount of calcium and magnesium ions, it undergoes regeneration. The regeneration process involves flushing the resin layer with brine from the salt tank to displace the hardness ions on the resin and discharge them out of the tank with the regeneration waste liquid. Thus, the resin regains its softening exchange function.

　　　(two)Control mode of fully automatic boiler softened water equipment

　　Time-type: It starts to restore at the set time, with a short cycle of one day. It is suitable for water supply in systems with stable water consumption such as air conditioning and boiler systems.

　　Time control refers to the automatic initiation of the regeneration process when the equipment operation reaches the set regeneration time. Such systems set the regeneration time based on the actual water consumption and the equipment's exchange capacity. Users can select the regeneration process during periods with lower water consumption or start it manually at any time as needed.

　　Flow type: It starts to restore when the flow reaches the set value and is suitable for water supply in all systems.

　　Flow control is based on the switching capacity of the equipment(Total water production)To set the running endpoint. When the equipment is in operation, a dedicated flowmeter is used to count the volume of water flowing out. When the total water output reaches the set water volume, the controller automatically starts the regeneration process. Before setting, the total water production for each cycle should be calculated based on the total resin filling volume and the hardness of the raw water, and then set according to this value(960The water production volume of the series is automatically calculated by the controller). When the set water volume is reached, regeneration can be carried out immediately as needed or wait for a certain set time before regeneration.

　　(three)Analysis of the Reasons for Excessive Hardness of softened Water in Boiler Softened Water Equipment

　　The sampling port test of the soft water equipment was qualified, but the water hardness in the soft water tank exceeded the standard. The reasons for this phenomenon are as follows:

　　1The regeneration cycle is set too high or the flowmeter malfunctions cause inaccurate measurement, resulting in the resin not being regenerated in time when it should be regenerated, and thus the excess water is injected into the soft water tank.

　　2The forward wash time is too short, causing some of the waste brine that should have been washed away during the forward wash to be carried into the soft water tank.

　　3Unstable water pressure in the feed water can lead to insufficient water replenishment in the salt tank, insufficient salt absorption, and inadequate forward washing. Any of these factors can cause the hardness of the effluent after regeneration to exceed the standard, affecting the water quality of the soft water tank.

　　4When there was very little salt in the salt tank, it was not added in time, resulting in poor regeneration effect on a certain occasions.

　　5Improper operation led to the closure of the feed water valve during a certain regeneration process.