Water pumping system including a suction ram

Details Water pumping system including a suction ram Water pumping system including a suction ram

1988-05-13

1990-08-14

Smith, Leonard E.

Pumps

One fluid pumped by contact or entrainment with another

Liquid piston

F04F 700

Patent

active

049483412

ABSTRACT:
A pumping system for water in a pit comprises a feeding unit to be installed above the ground and a suction ram assembly to be immerged into water partially filling the pit. The suction ram assembly has a ram valve (4a, 4b) and a foot valve (12, 13) which are connected to the feeding unit through the concentric arrangement of a feeding hose (1) and a riser pipe (2). The ram valve comprises two annular coaxial sleeve parts (4a, 4b) each having a valve seat (7, 8), and annularly surrounds the riser pipe (2). An electrolytical gas cushion vessel (17) having an electrode (18) is attached to the riser pipe (2) which forms an associated electrode. The vessel (17) also contains a float (21) which is connected to the ram valve (4a, 4b) over cables (22). The unit of the riser pipe (2), the ram valve (4a, 4b), the foot valve (12, 13) and the vessel (17) is plugged into a funnel-shaped sleeve (15) which is fixed to the feeding hose (1). The pumping system has a high efficiency and presents an adjustable threshold force of the ram valve (4a, 4b). If required, the assembly of the ram including the riser pipe (2) may be easily pulled from the pit.

REFERENCES:
patent: 531735 (1895-01-01), Mortensen
patent: 799428 (1905-09-01), Wolski
patent: 1953453 (1934-04-01), Whipple
patent: 3123009 (1964-03-01), Watson
patent: 4121895 (1978-10-01), Watson

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