Filtration characteristics of the filter press pump: To grasp the characteristics of the special environmental protection and energy-saving pump for the filter press, first understand the filtration characteristics of the filter press:
1. Feeding link: At the beginning of feeding, the filter chamber of the filter press is empty, and it is necessary to fill up the raw materials flexibly, and the large total flow feed flexibly fills the filter press.
2. Variable pressure filtration link: when the filter press is filled with raw materials, the working pressure just begins to rise, the total flow of the bottom pressure will not change the active filtration of the feed, the total output flow will be automatically reduced from large to large, the hydraulic transmission system, no overflow Flow, just started environmental protection and energy saving operation.
With the gradual increase of the feed working pressure of the filter press pump, the filter cake in the filter press begins to thicken, the filtration capacity of the filter press is also greatly reduced, and the amount of feed will also decrease.
Pressure-maintaining filtration link: The filter working pressure of the filter press rises to the maximum set working pressure. It is necessary to maintain the constant flow source filtration at the feeding working pressure. There are a few overflows. When the pump starts feeding the filter press and bottom pressure filtration, the total flow will not change. As the inner cavity of the filter press is filled with raw materials, the working pressure rises, and the filtration capacity of the filter press just begins to shrink. When it exceeds the preset value The operating speed of the hydraulic press control system is reduced, and the total output flow is reduced.
The filtration capacity of the filter press pump is gradually reduced, the feeding working pressure is gradually increased, and the total feed flow of the pump is automatically reduced, and the less total flow is 20% of the rated total flow. The machine is better to filter the curve graph basically. Therefore, the process is highly efficient, environmentally friendly and energy-saving, which is about 60% more environmentally friendly and energy-saving than ordinary pumps.
Characteristics and inspection of filter press pumps
The filter press pump is characterized by its unique corrosion resistance function. Except for the acid solution of effective chlorine and caustic soda solution, it can basically transport various organic chemical aqueous solutions and inorganic aqueous solutions.
Care should be taken when repairing the filter press pump: when repairing or transporting, its color is relatively brittle, do not bump it, all connecting components must be supported evenly, and should not be tightened too tightly, so as not to leak, the pipeline at the entrance is better. Vulcanized rubber expansion joints are installed; sudden cooling and sudden heating should also be avoided, and the temperature difference between hot and cold should not be higher than 50 °C. The screw is produced and processed by the screw. If forced disassembly and assembly, it will cause damage to the anti-corrosion surface of the filter press pump parts and promote the corrosion of the parts.