Hydraulic sleeve valve and seal arrangement for piston pump

Details Hydraulic sleeve valve and seal arrangement for piston pump Hydraulic sleeve valve and seal arrangement for piston pump

1980-12-04

1982-06-29

Freeh, William L.

Pumps

Expansible chamber type

Mechanically actuated distributor

417900, F04B 700

Patent

active

043370179

ABSTRACT:
To prevent leakage of wet concrete passing from a reciprocating pump to a delivery conduit and to prevent clogging of the seal and valve means interposed between the pump outlets and the mouth of the delivery conduit, a floating sleeve is biased by pump system hydraulic pressure into solid engagement with the wear ring which in turn is held in firm sliding contact and sealed engagement with an opposing wear plate at the outlets of the pump structure. The floating sleeve is pressure sealed on opposite sides of a delivery port for pressurized hydraulic fluid to positively exclude concrete from fouling the operation of the sleeve. Concrete grout under pressure entering a void behind the sleeve applies additional pressure to the sleeve to bias the wear ring even in the event of hydraulic pressure loss. The grout within the void prevents the sleeve from ever backing away from the wear ring.

REFERENCES:
patent: 2168658 (1939-08-01), Thomas
patent: 3989420 (1976-11-01), Taylor
patent: 4178142 (1979-12-01), Schwing
patent: 4198193 (1980-04-01), Westerlund

Affiliated with

Also associated with

Rating

Hydraulic sleeve valve and seal arrangement for piston pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic sleeve valve and seal arrangement for piston pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic sleeve valve and seal arrangement for piston pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2163133