PBT Crimped Filament
Tai Hing's PBT Crimped Filament bristle fiber shows greater control in the speed of liquid flowing, also allows greater capacity in containing paint liquid within filament. A variety of shape in cross sections are available, non-circle cross section filament make the brushes fluffier and clean effectively. Pbt crimped filament is used as Paintbrush Filament, Makeup Brush Filament, household brush bristle.
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1 mines that cannot use the open-air mining method of wind-flow ventilation, or mines with fewer stages of operation at the same time;
2 mines with large ventilation resistance, large air leakage points or wide distribution areas in production operations;
3 The existing wells can be used as special intake wind tunnels, and mines with little interference between the air intake lines and the transportation lines.
  The use of multi-stage station ventilation systems should meet the following requirements:
The level 1 station should be less, the wind section should be 1 level, and the inlet and return sections should not exceed 2 levels;
Fan for the stations 2 and the front and rear units per branch should match the same; fan of the same stations, the model should be the same size; Number of stations fan units is suitably 1 to 3 sets of units;
3 The characteristic curve of the fan should be monotonically decreasing, and there should be no obvious saddle type;
4 access roads should be provided with duct ventilation;
5 multi-stage station ventilation system should adopt centralized control.
In which case, multi-stage station pressure pumping ventilation system should be adopted, what regulations are there?
Multi-stage station pressure pumping ventilation system should be adopted in the following cases: