Pumps – Intensifier – Ram type
Patent
1991-01-14
1992-04-07
Bertsch, Richard A.
Pumps
Intensifier
Ram type
417240, 91 49, F04F 702, F04F 700, F15B 1302
Patent
active
051023032
DESCRIPTION:
BRIEF SUMMARY
The present invention discloses an improved hydraulic ram.
Hydraulic rams have been known for a long time. As known, they are water elevator devices utilizing shock forces or impact forces in a conduit which is abruptly closed (by ram thrust) to force part of the liquid volume therein the rise to higher level than the height of the fall or drop.
The devices, however, until this time have been characterized by a small yield when the water is flowing rapidly.
The object of the present invention is precisely to improve the known device particularly regarding this point.
The object of the invention then is a hydraulic ram of the type comprising a chamber, a water inlet conduit, a draining conduit provided with a clapper valve and a bell or cup valve communicating with said chamber by means of a valve system and provided with a backflow water outlet, characterized in that said valve system is constituted of a plurality of individual clapper valve arranged parallel to one another, each of which is capable of blocking a passage orifice in a wall separating said chamber from said bell or cup valve, said clapper valves being provided on the same side of said wall as the bell or cup valve.
According to another characteristic of the device of the invention, the draining conduit is located vertically under the chamber of the ram and the clapper valve of the draining conduit presents a vertical axis extending into the chamber and mounted sliding in a stationary bearing and being pulled back continuously and elastically into top open position as it controls the clapper valve, while said clapper valve in addition comprises a shock absorbing element for the end of the downstroke.
It is advantageous that said clapper valve be provided in a venturitype conduit, slightly upstream from the narrowest section of the conduit, and that a rubber washer be provided at the point of contact between the clapper valve and its seat.
According to still another characteristic, a filtering screen is interposed between the chamber of the ram and the bell or cup valve in such a manner as to be tangent with the water inlet conduit.
Finally, the water inlet conduit advantageously comprises a cross section which extends broadening out in the direction of the ram chamber and the water inlet conduit is formed of two half-conduits provided with lateral fixation straps which are superposed in the joining surface of the half-conduits, said straps being integral with the anchoring clamp bearings of the ram in an appropriate fixing structure.
Other characteristics and advantages arise from the following description of one embodiment of the device according to the invention, the description given solely as an example and relating to the attached drawings, wherein:
FIG. 1 is a vertical axis section through a ram according to the invention, and
FIG. 2 is a plan view along the line II--II of the device shown in FIG. 1.
The ram shown in the drawings comprises a cylindrical chamber 1 with vertical axis, provided with a horizontal water inlet conduit 2, a vertical draining conduit 3 arranged below chamber 1 and a cylindrical bell or cup valve 4 arranged above chamber 1 and provided with a water backflow outlet connection 5.
According to the invention, a valve system is arranged at the interface between chamber 1 and bell or cup valve 4 and the valve system is constituted of a plurality of clapper valves in the form of spheres 6 arranged parallel to one another and with each sphere facing a circular orifice 7 which the sphere is capable of blocking. The orifices or seats 7 are formed in a relatively thick plate 8 affixed in the interface surface between bell or cup valve 4 and chamber 1.
Spheres 6 are arranged on the side of plate 8 opposite chamber 1. Each sphere has a certain degree of freedom of movement in such a fashion as to be able to block its seat or on the other hand to remove itself from said seat sufficiently to allow a certain water flow to pass by.
For this, each sphere 6 is confined in a space 9 defined by separating barriers 10 and a perforate
REFERENCES:
patent: 1364617 (1921-01-01), Daynix
patent: 2424108 (1947-07-01), Merten
Basichas Alfred
Bertsch Richard A.
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