3x2 HH Primary Rougher Feed Pump Parts Stuffing Box DH078

Tobee^® AH, HH series Primary Rougher Feed Pump with gland packing seal arrangement, and the most important parts - Stuffing Box B078 CH078 C078 CAM078 DH078 D078 DAM078 EH078 E078 EAM078 G078.

Slurry pump stuffing box of a sailboat will have a stern tube that is slightly bigger than the prop shaft. It will also have packing nut threads or a gland nut. The packing is inside the gland nut and creates the seal. The shaft is wrapped by the packing and put in the gland nut. Through tightening it onto the stern tube, the packing is compressed, creating a seal against the shaft. Creating a proper plunger alignment is critical for correct flow and a long wear life. Stuffing box components are of D21 cast iron, A05 high chrome, stainless steel, brass or other application-specific materials.

Stuffing Box Design:

When centrifugal pumps were developed there was a need to prevent the pumpage from pouring out thru the open clearance between the pump casing back and the rotating shaft, which turns the impeller.  This was accomplished by stuffing rope like material, called packing, into a cylindrical opening in the rear of the casing where the shaft passes through it.  Packing is usually 1/4”, 3/8”, or 1/2” square cross sectional, the size to match the annular section between the shaft OD and the stuffing box ID.  It comes in coils, and is cut to fit around the shaft OD. It is a soft material and usually has a lubricant in it. The opening, the stuffing box, has a shoulder at the bottom or “throat” (inboard end closest to impeller) and is fitted with a follower, called the gland, on the outboard end, which compresses the packing into the inner sides of the stuffing box against the shoulder in the bottom of the box, and against the rotating pump shaft. This effectively limits the leakage out of the pump.  It will not completely prevent leakage.  A small amount of pumpage must leak out of the pump in order to cool and lubricate the packing.

Slurry Pump Stuffing Box Codes:

HH series Slurry Pump Design Features:

√ Ductile iron fully lined casing provides durability, strength and long service life.
√ Multi-stage high pressure operation to 750 psi.
√ Heavy duty construction with through-bolt design provides ease of maintenance and minimal downtime.
√ Large diameter, slow turning, high efficiency impellers designed to achieve maximum wear life and low operating costs.
√ Large, open internal passages designed to maximize wear life and lower operating costs.
√ Thick elastomer and alloy liners provide superior corrosion resistance and maximum wear life.
√ Full flush gland, low flow, and dry running centrifugal seals reduce flush water usage minimizing pump operating costs.

3x2 HH High Head Slurry Pump Applications:

HH high head slurry pumps widely used for wet crushers, SAG mill discharge, ball mill discharge, rod mill discharge, Ni acid slurry, coarse sand, coarse tailings, phosphate matrix, minerals concentrate, heavy media, dredging, bottom/fly ash, lime grinding, oil sands, mineral sands, fine tailings, phosphoric acid, coal, flotation, sugar beets, process chemical, pulp and paper, FGD, waste water etc.