Common structural pump hydraulic seal film

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;

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

Pump with double-end hydraulic seal film sealing member of this type of seal is more suitable for media containing solid particles or highly viscous media occasions (work environment) into Oh!

If there are special conditions (different harsh working environment or media), the rubber membrane seal gas can be combined with a contact type mechanical seal and a rubber or a combination of labyrinth seal.

On pump gas film special rubber hydraulic seal which has the structure and characteristics, we have several common structural external pressure double seal rubber membrane sealing gas, the internal pressure double seal rubber seal gas film tandem spare rubber gas seal. I look at the external pressure hydraulic rubber double gas film face seal hydraulic structures What are the characteristics of it!

Hydraulic pump seal structure and characteristics of external pressure rubber double gas film face seal:

Hydraulic pump rubber seals double external pressure gas film face seal is composed of two sets of gas film seal back to back (or face) design formed and filled with clean gas isolation between the two sets of sealing pressure will be higher than sealed sealed chamber pressure of about 0.2MPa.

In this case into the sealed chamber isolation gas through a small portion of the sealing surface of the inner seal into the pump chamber is sealed to prevent leakage of liquid, most isolated gas through the outer seal does not contact the liquid medium for the isolation of clean air, in full compliance with environmental requirements.

In order to prevent outside air for isolation is interrupted unexpectedly leaving open the inner seal, inner seal double flat structural design, so that regardless of the inboard seal pressure to bear positive or negative effect of poor, inner seal is balanced, can achieve sealing. The inner seal and the outer surface of the seal stationary seal ring (ring) hydrodynamic grooves are engraved at the outer diameter of the sealing surface. Such gas film seal mainly applicable to all types of solid-free medium, guaranteed to be sealed liquid media technology to achieve "zero leakage" or "zero escape." This is the external pressure hydraulic rubber double gas film face of the structure and characteristics.