Water Ring Vacuum Pump Vacuum Adsorption
Attentions in the adsorption process of water ring vacuum pump：
Water-ring vacuum pump relies on the volume change of pump chamber to achieve aspiration, compression and exhaust. What problems should be paid attention to in its adsorption process? Let's go into more detail.
1. Open the water source first, close the water source at the end, and then close the water ring vacuum pump. In the process of adsorption, attention should be paid to turning off the water source in time when the power is off or the pump body is unexpected, so as to prevent the water from flowing back into the cavity due to the "vacuum" of the mould cavity.
2. Alkali-free fiberglass cloth or felt is used as reinforcing material. Before use, it is better to bake in oven at 80 C for two hours to evaporate the moisture adsorbed in the fiberglass.
3. Don't choose too thin vacuum bag film. Too thin bag film has many micro-holes. It is not suitable to find. It is easy to leak air, resulting in a decrease in vacuum, impermeability and partial whitening.
4. For molds with complex shapes, it is necessary to press them with scrapers during vacuum pumping, and to adhere to the mold to prevent glue accumulation in overhead.
5. The vacuum outlet of water-ring vacuum pump should be set aside a certain distance from the orifice of the orifice of the orifice of the orifice of the orifice of the orifice to prevent the resin from being drawn directly from the orifice of the orifice and the suction pipe. The flow of the resin in the cavity should be uniform and equal, and the local flow velocity should be avoided too fast to cause the resin uneven.
6, the adsorption resin should be transported to the field 24 hours ahead of schedule, and the gel time sample should be produced at the time of production. The resin should be evenly stirred and the bubbles should be reduced as far as possible. The gel should be left for a long time to deal with emergencies. The gel time should not be too short. The vacuum adsorption time should be controlled at 15~30 minutes. Quality.
When using water ring vacuum pump, any problems should be paid attention to. After detailed understanding of these, we can better carry out the operation of the equipment, and to a certain extent, avoid the occurrence of problems.