Product Introduction
The mechanical pumped proportional mixing device consists of skid mounted parts (water turbine, foam liquid pump), pipes, valves, atmospheric foam liquid storage tank, instruments and control systems. The hydraulic turbine driven by the fire pressure water drives the foam liquid pump to inject the quantitative foam liquid into the outlet of the hydraulic turbine and mix it with the fire water to form the foam liquid mixture. The mechanical pumped proportional mixing device has small volume, accurate mixing ratio control, wide application range of working pressure and flow of foam mixture, relatively fixed overflow flow and speed, no need for external power supply, no additional fire water consumption, and is an advanced foam fire extinguishing device.
Advantages and Features
The mechanical pump in proportional mixing device has a small volume and accurate mixing ratio control;
The working pressure and flow of foam mixture have a wide range of applications, and no external power supply or diesel engine is required.
The working pressure and flow of foam mixture have a wide range of applications, and no external power supply or diesel engine is required.
Product Introduction
Type description
Working principle
The fire water flow drives the foam pump through the turbine, and the foam pump extracts the foam liquid and pressurizes it. The pressurized foam liquid is injected into the turbine outlet pipeline to mix with the fire water to form the foam mixture. After the fire water flow passes through the turbine, part of the water pressure is used to drive the foam pump, which will form a certain pressure difference between the inlet and outlet of the turbine. Foam liquid pump with metering pump can make the mixing ratio of the device more accurate.
Flow chart of mechanical pump type proportional mixing device
Structural composition
Unit outline (excluding foam storage tank and control system)
Technical parameters
| Model | Mixing ratio （%） | Flow range （L/s） | Working pressure （MPa） | Nominal diameter |
| PHP66（3%）-JS | 3 | 4 ~ 66 | 0.6~1.6 | DN150 |
| PHP100（3%）-JS | 3 | 4 ~ 100 | 0.6~1.6 | DN150 |
| PHP135（3%）-JS | 3 | 4 ~ 135 | 0.6~1.6 | DN200 |
| PHP170（3%）-JS | 3 | 6 ~ 170 | 0.6~1.6 | DN250 |
| PHP250（3%）-JS | 3 | 8 ~ 250 | 0.6~1.6 | DN300 |
| PHP130（3%）-JS | 3 | 30 ~ 130 | 0.6~1.6 | DN200 |
