Isolated chamber pump with recirculation of leakages

Abstract

Vibrating pump with a secondary closed circuit designed for the recovery and reinjection of the fluid that can eventually escape from the compression chamber and which, if not collected, would end up in the force chamber affecting the drive elements (springs, magnetic core) and therefore the proper functioning and useful life of the pump.

Claims

1. A vibrating pump for displacement of liquids, the pump comprising: a hydraulic system consisting of a hydraulic head with an inlet and an outlet for liquid, said hydraulic head being joined by screws to an electromagnetic system composed of a metal frame which is mounted to a rear bolt and which is situated around a coil and a plurality of bushings so as to form a force chamber therein, wherein a magnetic core is positioned between two springs and moves in axial direction in a reciprocating motion, said magnetic core being coupled to a plunger disposed inside a compression chamber, the plunger extending through a leak recovery chamber, characterized in that: the leak recovery chamber, which is delimited by a pressure seal on one side and by a membrane on an opposite side, recovers any loss of liquid from the compression chamber and conducts it through a conduit directly to the inlet of the compression chamber, the inlet drawing in and re-infusing the liquid from the leak recovery chamber back into the compression chamber.

2. The vibrating pump of claim 1, wherein a pumping means is composed of the magnetic core, which is made of ferromagnetic material and the plunger, the plunger being made of ceramic material, wherein the magnetic core and the plunger are joined by an over-molding process with a plastic material so as to form a single piece.

3. The vibrating pump of claim 1, wherein a pumping means is composed of the magnetic core, which is made of ferromagnetic material, a washer made of plastic material, and the plunger, wherein the plunger is made of ceramic material, wherein the magnetic core, the washer, and the plunger are glued by contact cement so as to form a single piece.

Description

DESCRIPTION OF THE DRAWINGS

(1) In order to complement the description that is being made and in order to facilitate the understanding of the characteristics of the invention, accompanying to the present specification are figures that, with illustrative and non-limiting character, have been represented as follows:

(2) FIG. 1 shows a schematic drawing of an exemplary embodiment of the vibrating pump for liquids according to the invention, sectioned in a vertical plane; and

(3) FIG. 2 shows a schematic drawing of an exemplary embodiment of the vibrating pump for liquids with membrane according to the invention, sectioned by a vertical plane; and

(4) FIG. 3 shows a schematic drawing of an exemplary embodiment of the over-molded pumping means, according to the invention, sectioned in a vertical plane; and

(5) FIG. 4 shows a schematic drawing of an exemplary embodiment of the glued pumping means according to the invention, sectioned in a vertical plane.

DETAILED DESCRIPTION

(6) In the exemplary embodiment shown in FIG. 1 the vibrating pump for liquids comprises a hydraulic system (2) consisting of a hydraulic head (3) with an inlet (4) and an outlet (5) for the liquid, said hydraulic head (3) is joined by the screws (21) to the electromagnetic system (1) composed of the metal frame (7) which integrates the rear bolt (8) and it is situated around the coil (6) which at its turn is located around the bushings (9, 10, 11) constituting the force chamber (12) through which the magnetic core (13) positioned between two springs (27, 28) moves in axial direction and alternative sense and said magnetic core (13) extends in the plunger (14) inside the compression chamber (15) through the leak recovery chamber (16).

(7) According to the invention, and as shown in FIG. 1, the leak recovery chamber (16), which is limited by the pressure seal (17) on the right-hand side and by the sealing seals (18, 19) on the left-hand side, recovers any losses of water from the compression chamber (15) and conduct it through the conduit (20) to the inlet (4) of the compression chamber (15) which draws in and re-infuses the water from the leak recovery chamber (16) to the pumping circuit.

(8) In the exemplary embodiment shown in FIG. 2, the leak recovery chamber (16), which is limited by the pressure seal (17) on the right-hand side and by the membrane (22) on the left-hand side, recovers any water losses from the compression chamber (15) and conduct it through the conduit (20) to the inlet (4) of the compression chamber (15) which by suction re-injects the water present in the leak recovery chamber (16) inside the pumping circuit.

(9) In the exemplary embodiment shown in FIG. 3 the pumping means is composed of a core (13) made of a ferromagnetic material and a plunger (14) attached to said core (13) by over-moulding with a plastic material (23) resulting in a single piece. The plunger (14) is made of ceramic material.

(10) In the exemplary embodiment shown in FIG. 4 the pumping means is composed of a core (24) made of ferromagnetic material, a plastic washer (25) and a plunger (26) attached to said core (24) by contact cement constituting a single piece. The plunger (26) is made of ceramic material.

(11) Having described the nature of the invention sufficiently, as well as a preferred version, it is stated for the appropriate purposes that the materials, shape, size and arrangement of the elements described can be changed, provided this does not involve an alteration of the essential features of the invention claimed below.