Common structure of liquid film hydraulic seal for pump

The common structure of the liquid film hydraulic seal of the pump has three kinds: film single rubber seal, double seal rubber film, film series rubber seal, film rubber seal series.

Double seal structure of pump hydraulic seal film

??A pump with a film of hydraulic seal double seal member structural features:

1. In addition to more than one end single face, or multi-spring, balanced structure;

2. The primary and secondary seals are non-contact operation, power consumption is reduced while having a long life;

3. Unique hydrodynamic groove design, the primary seal buffer liquid pumped into the media to prevent media leaks and buffer liquid consumption limited;

4. Deputy sealed with rubber intermediate slotted upstream pumping mechanical seal can be achieved without the buffer of liquid leakage and long-term operation;

5. Assist simple structure;

6 After the main seal failure how it? Secondary seals will play the role of main seal in a short time to prevent a large number of media leaks to the atmosphere side;

??the pump film rubber seal double seal characteristics of medium conditions (working environment, Applications):

Liquid film hydraulic seals with a double end seal of this type of seal are more suitable for use in the medium containing solid particles or high viscosity media occasions (working environment).

If there are special conditions (different from the harsh working environment or medium), the rubber seal can be combined with its contact mechanical seal or the combination of rubber labyrinth seal used.

On hydraulic pump special rubber film hydraulic seals have what kind of structure and characteristics, and our common several structures with external pressure type double face rubber gas film seal, internal pressure type double face rubber gas film seal, tandem type spare rubber film seal. Let me have a look at hydraulic hydraulic pump rubber double pressing type gas film face seal structure what are the characteristics of it.

The structure and characteristics of the hydraulic seal pieces of hydraulic pump rubber pressure of dual seal:

Hydraulic seal pieces of hydraulic pump rubber double pressing type gas film face seal is from the two sets of gas film seal back-to-back or face-to-face) design, and two sets of sealed between filled clean gas isolation the pressure will be higher than the seal cavity is sealed pressure of 0.2MPa around.

?So into the sealed isolation gas cavity in a small part through the inner seal sealing surface into the pump chamber to prevent sealed liquid leakage, the vast majority of isolation gas through the outer seal liquid medium without contact, clean gas isolation, in full compliance with the requirements of environmental protection.

  And in order to prevent for isolating gas accident interruption and to make the inner seal opened, the inner seal with double flat structure design, so no matter inside sealing under positive pressure or negative pressure difference, inner seal is balanced, can achieve seal.Inner seal and outer seal static ring (dynamic ring) seal face fluid dynamic pressure grooves are engraved on the outer diameter of the sealing surface.This gas film seal is mainly used in all kinds of not containing solid particles of the medium, the guarantee to realize the "zero leakage" or "zero emission" technology of liquid medium sealed. This is for hydraulic pump rubber double pressing type gas film face seal structure and characteristics.