Vacuum casting equipment, 3 kinds of sealing form, is based on the actual use of the summary out of the three kinds of different sealed way, the following for everyone to introduce in detail.
1 Vacuum Casting Equipment Packing SEAL
Vacuum Casting Equipment Packing seal, is the most common kind of seal, is through the injection shaft seal water form, continuously in the stuffing inside inject certain pressure water, prevents the vacuum casting equipment The pump body slurry body to release; for the multi-stage series pump which is not suitable to pay impeller shaft seal, the packing shaft seal is adopted. The packing shaft SEAL structure is simple, the maintenance is convenient, the price is cheap.
2 Vacuum Casting Equipment pay impeller seals
Vacuum casting equipment to pay the impeller seal, is through a reverse centrifugal force of the impeller to prevent leakage. In the vacuum casting equipment imports positive pressure value is not greater than the pump outlet pressure value 10%, the Single-stage pump or multi-stage series pump pump can be used to pay impeller shaft seal, pay impeller shaft seal has no need for shaft sealing water, not diluted slurry, good sealing effect and so on. Therefore, such seals may be considered in cases where dilution is not allowed in the slurry.
3 Mechanical Seal of vacuum casting equipment
The mechanical seal of vacuum casting equipment is generally used in the case of higher sealing requirements. In particular, some chemical, food fields, not only require sealing, but also the most important is not allowed to add extra ingredients into the pump body.