| Product Structure Design |
| 2.1.Raw Water Multi-stage Pretreatment |
| 2.1.2.Raw Water Variable Frequency Pressurization |
Adopts high-quality branded variable frequency controller to realize soft start and soft stop of the raw water booster pump, and eliminate the water hammer impact on the pipeline system. It is equipped with a high-precision pressure detection and control system to prevent overpressure of the raw water pressurization system and avoid dry running of the water pump under no-water condition. |
| 2.1.3.Multimedia Filter |
Adopts opaque blue FRP tank to inhibit bacterial growth. With internal rubber lining and external glass fiber winding, it features light weight and high rigidity. The tank is filled with special quartz sand; for areas with poor raw water quality, manganese sand and anthracite can be additionally filled at the same time. Equipped with a high-quality branded multi-port valve with copper valve core, realizing automatic timed forward and back washing of quartz sand. |
| 2.1.4.Activated Carbon Filter |
Adopts opaque blue FRP tank to inhibit bacterial growth. With internal rubber lining and external glass fiber winding, it features light weight and high rigidity. The tank is filled with special coconut shell activated carbon, with the iodine adsorption value of activated carbon ≥1000mg/g. For areas with high chloramine content in raw water, two carbon filters can be configured for combined use, subject to the product configuration list. Equipped with a high-quality branded multi-port valve with copper valve core, realizing automatic timed forward and back washing of activated carbon. |
| 2.1.5.Softening Filter |
Adopts opaque blue FRP tank to inhibit bacterial growth. With internal rubber lining and external glass fiber winding, it features light weight and high rigidity. The tank is filled with Purolite strong-acid styrene cation exchange resin. For areas with high raw water hardness, two softening filters can be optionally configured for combined use, subject to the product configuration list. Equipped with a high-quality branded multi-port valve with copper valve core, supporting automatic timed forward and back washing of the resin, as well as automatic water replenishment and salt absorption regeneration of the resin. |
| 2.1.6.Security Filter |
National standard 304 stainless steel 5-cartridge filter features a top flat design, which closely fits and compresses the upper end of filter cartridges with no air accumulation space. It is equipped with 5μm PP cotton filter cartridges of no less than 30 inches. |
| 2.2.Intelligent Two-stage Reverse Osmosis |
| 2.2.1.Integrated Two-stage Reverse Osmosis Main Unit |
The first-stage and second-stage reverse osmosis systems are integrated on a single frame without an intermediate water tank. The first-stage product water is directly delivered to the second-stage high-pressure pump, and the second-stage product water is supplied directly to dialysis machines. It features a compact structure and reasonable layout. Real-time conductivity monitoring is available for raw water, first-stage pure water and second-stage pure water, along with multi-point monitoring of pressure and flow. |
| 2.2.2.Water Balancer |
National standard 304 stainless steel round water balancer with capacity ≥140L, welded on the equipment cabinet. Fitted with a pressure sensor to dynamically monitor the water level; cooperating with the inlet valve for intelligent selective opening and closing, it forms an intelligent water supply dynamic balance system for more stable water inflow. |
| 2.2.3.Reverse Osmosis Membrane |
Adopts international first-line brand Hydranautics 8040 energy-saving ultra-low pressure fully aromatic high cross-linking polyamide composite membrane. The average salt rejection rate is ≥99.2%. |
| 2.2.4.Dead-end-free Membrane Vessel |
Made of national standard SS304 stainless steel with dead-space-free design. Top inlet and top outlet structure enables full internal water circulation at high flow velocity. The upper and lower end covers closely fit the end face of reverse osmosis membrane, with no RO membrane support bracket adopted. |
| 2.2.5.High-pressure Pump |
Vertical multistage air-cooled centrifugal pump. It is made of national standard SS304 stainless steel, with a total of 2 units configured. The flow rate and head fully meet the system design requirements. |
| 2.2.6.Conductivity Sensor |
Well-known brand conductivity meter equipped with a stainless steel probe. It synchronously displays the measured values of raw water, first-stage pure water and second-stage pure water on the touch screen, with a measurement error ≤0.02 μS/cm. |
| 2.2.7.Control System |
Waterproof sheet metal electric control cabinet with arc transition design on the front side. The main control system adopts Siemens PLC and touch screen, pre-installed with dedicated software for two-stage reverse osmosis water treatment. An open data interface is reserved to support remote operation and monitoring. |
| 2.2.8.Connecting Pipes, Fittings and Valves |
The connecting pipes of the main unit adopt national standard SS304 stainless steel pipes, large arc elbows and straight-through tees. All circumferential welds are fully automatic welded with internal and external inert gas shielding. National standard 304 stainless steel valves including inlet valve, pressure regulating valve, drain valve and reflow water-saving valve adopt clamp connection, facilitating disassembly, assembly and maintenance. |
2.3.Dead-space-free Circulating Water Supply
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| 2.3.1.Main Water Supply Pipe |
To be prepared by the customer. Optional piping: UPVC pipe or SS304 stainless steel pipe, featuring smooth inner wall, low flow resistance, corrosion resistance and no precipitate release. It adopts a large circulation loop design with real-time pipe network pressure monitoring, and a sampling valve is installed at the water return end. |
| 2.3.2.Constant Pressure Water Supply Device |
Equipped with a well-known brand pressure stabilizing valve, which automatically adjusts and stabilizes the pressure of the water supply pipe network. It prevents pipe network pressure fluctuations caused by the startup and shutdown of dialysis machines, and meets the water pressure requirements of dialysis machines. |
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