Double Mechanical Seal

Hydroman® Double Mechanical Seal is an excellent proven versitile design that can cope with tough applications, it can be used to different submersible pumps like, submersible slurry pump, submersible sand pump, submersible dredging pump, submersible sewage sludge pump, submersible mud pump, submersible dewatering pump, hydraulic slurry pumps, hydraulic submersible dredge pumps, Excavator mounted hydraulic dredge pumps ect., An double mechanical seal uses both sturdy and yet flexible materials to keep a tight close on a pump shaft as well as allow the ability to move freely and even spin within. Submersible Pumps that have these types of seals are more efficient and reliable performance over extended time periods to prevent the leaking of pumped fluids on the drive shafts.

Submersible Slurry Pump Double Mechanical Seal Fundamentals:

Double seals are mounted either face-to-face or back-to back,a mechanical seal for submersible slurry pump should utilize four necessary aspects in its use: main sealing surface, secondary sealing surfaces, an actuating means of movement, and a driving means of station:

The primary sealing surfaces are the core of the process.  The surface is almost always a hard material, such as silicon carbide, or tungsten, embedded in the pump casing, and a softer material, such as carbon in the assembly of the rotating seal. These two rings are in constant contact, one ring rotates with the shaft, while the other ring is motionless. These two rings are made using a specific process known as lapping.  This process allows it to reach the appropriate texture and shape (flat being the norm).

The secondary sealing surfaces are the other aspects in the seal that require a fluid barrier but are not rotating relative to one another. Usually the secondary sealing elements are rubber diaphragms, O-rings, or PTFE wedges.

In an attempt to maintain the two primary sealing surfaces in close contact, a force of actuation is required to push on the seals. Usually a spring is utilized, or something to the like of a spring.  In conjunction with the spring, the pressure alone of the sealed liquid can provide necessary pressure to keep the seals in close proximity.

What is known as a method of drive is a simple principle keeping the parts inside the equipment stationary. It goes without saying that the shaft must be the only part rotating in relation to the sealed ends.

Double Mechanical Seal for Submersible Slurry Pump Application:

slurry pumping, general industrial pumping, sewage pumping and drainage, water supply systems, irrigation systems, mine dewatering, artificial lifts, offshore drilling rigs, deep well and water well drilling, pumping, borehole drilling, fire fighting, groundwater pumping, seawater handling and sewage treatment plants.

Hydroman® Double Mechanical Seal for Submersible Slurry Pump Photos: