What is the role of boiler multi-stage pump mouth ring?

Boiler multi-stage pump ring (also known as sealing ring), the general number of water pump and the number of rings is the same, that is, a 5-level pump, then there are five rings, a mouth ring, 4 mouth rings.
 Boiler multi-stage pump port ring role:
        1, the boiler multi-stage pump ring is the role of the impeller and the pump shell to form a narrow, twists and turns of the channel, to increase the flow resistance of the medium to achieve the purpose of reducing media leakage. Boiler multi-stage pump port ring also set up to protect the main parts of the pump from the role of wear and tear, the ring ring wear, you can repair or replace the new ring, to restore the normal assembly gap, so economical and easy maintenance.
        2, the gap between the mouth of the General Assembly will be the efficiency of the use of low pump, pump pressurized fluid will be too much from the pump outlet area along the impeller and the mouth of the gap back to the import, thereby reducing the efficiency of the pump, Increased, will make the oral ring prematurely worn. Oral ring gap is too large, will lead to reduced flow of the pump, not on the amount of serious.More about APK sell water pumps
        3, boiler multi-level pump ring ring integrity and it with the radial radial clearance with the rotor, should first check the demolition of the pump. Such as boiler multi-stage pump port ring has a groove or other defects or broken or gap over the values ​​specified in Table 5, should replace the new ring ring or the original ring repair welding.
        4, boiler multi-stage pump ring ring structure usually has radial gap type ring type, double ring ladder type, double ring labyrinth type and axial gap type and so on.
        5, the boiler multi-stage pump in operation, the boiler multi-stage pump port ring and the corresponding circle of the impeller is also caused by wear and tear caused by increased clearance exceeds the specified value, because the new ring diameter should be the impeller inlet diameter to the preparation of impeller and The radial clearance between the boiler multi-stage pump port rings is specified in Table 5-3. In the repair process, the gap to a little smaller, in order to improve the efficiency of the pump and extend the use of the period.
        6, mouth ring material can be used gray cast iron HT200, cast steel and stainless steel and other materials, ring material can be determined according to technical requirements.

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