RETENTION VALVE FOR A RANGE OF PACKAGING

Abstract

RETENTION VALVE FOR VARIOUS PACKAGES relates to a retention valve for a range of packaging, consisting of a capsular body (1) forming an outlet duct for the product to be dispensed, the outer diameter of which is provided with means (2) for securing to the inside of the outlet in the form of a circular hole (F) of a dispensing pack (E), while its inner diameter slidably accommodates a longitudinally movable obturator (3), and the front end of which has closing means (4) for a obturator (3), while its rear end is flexibly engaged in the centre of a flexible sieve (5) and, at this point, said sieve has means for keeping the aforementioned obturator (3) pulled back in order to keep the leak-tight closing means (4) closed.

Claims

1. RETENTION VALVE FOR VARIOUS PACKAGES, characterized in that it comprises a capsular body (1), which configures an outlet conduit for the product to be dispensed, this body having an external diameter, equipped with means (2) for fastening inside the outlet in the form of a circular hole (F) of a usual dispensing package (E), while its internal diameter is housed, slidably, a obturator (3) movable longitudinally, as well as its front end has means (4) of watertight sealing for the obturator (3), while its rear end is softly engaged in the center of a flexible sieve (5) and, at this point, said sieve has means to keep said obturator (3) tensioned backwards in order to keep the means (4) closed watertight, where the closing pressure is overcome by the internal pressure established inside the outlet in the form of a circular hole (F) when activating the usual dispensing package (E).

2. RETENTION VALVE FOR VARIOUS PACKAGES, according to claim 1, characterized in that, in a preferred construction, the means (2) of fastening inside the outlet in the form of a circular hole (F) of a usual dispensing package (E) is carried out by mechanical interference.

3. RETENTION VALVE FOR VARIOUS PACKAGES, according to claim 2, characterized by the means (2) of fixation by mechanical interference in the inside the outlet in the form of a circular hole (F) of a usual dispenser package (E) are formed by a circular collar (6) with a central groove (7) for engagement in a circular fillet (8) existing in said outlet in the form of a circular hole (F).

4. RETENTION VALVE FOR VARIOUS PACKAGES, according to claim 1, characterized in that the capsular body (1) has the ends of its internal diameter defined by staggered sections, in which the anterior one that defines the sealing means (4) has two steps, both greater than 90?, one internal (9) and one external that configure the cone shaped sealing seat (10) for seating the corresponding part of the obturator (3), while at the opposite end of said capsular body (1) there is another step at an angle greater than 90? (11) for laying the flexible sieve (5).

5. RETENTION VALVE FOR VARIOUS PACKAGES, according to claim 1, characterized in that the obturator (3), in a single piece, comprises an intermediate section longitudinally finned (12), a front head in the form of a bung (13) and a posterior cylindrical tip with coupling terminal (14), in which the longitudinally finned intermediate section (12) is slidably adjusted to the internal diameter of the capsular body (1), while its front head in the form of a bung (13) has the shape of a circular tablet with a truncated external diameter that rests on the conical sealing seat (10) of the capsular body (1), being that, furthermore, the posterior tip of the coupling terminal (14) of the obturator (3) constitutes irreversible engagement in the spring center of the flexible sieve (5).

6. RETENTION VALVE FOR VARIOUS PACKAGES, according to claim 1, characterized in that the flexible sieve (5) comprises an annular section (15), whose external diameter is conical for seating on the step (11) of the capsular body (1), whereby the posterior side of the annular section (15) is extended in the form of a hollow dome defined by flexible links (16) that culminate in a circular center (17) with a penetration hole (18) with interference from the rear coupling tip (14) of the obturator (3).

Description

DESCRIPTION OF DRAWINGS

[0019] For a better understanding of the present invention, a detailed description of the same is given below, making reference to the attached drawings:

[0020] FIG. 1 represents a perspective view of the assembled valve;

[0021] FIG. 2 shows another perspective of the assembled valve, however, at a posterior angle;

[0022] FIG. 3 illustrates an exploded perspective in front angle showing the details of each component of the valve;

[0023] FIG. 4 is also an exploded perspective, however, in a posterior angle showing other constructive details of each component of the valve;

[0024] FIG. 5 shows the A-A section indicated in FIG. 1, showing the valve completely assembled and fitted in the circular outlet of a usual dispenser package; and the

[0025] FIG. 6 represents a view of the same section illustrated in the previous figure, however, in this case the valve is schematically shown in the open position.

DETAILED DESCRIPTION OF THE INVENTION

[0026] According to these figures and their details, more particularly FIGS. 1 to 5, the present invention, RETENTION VALVE FOR VARIOUS PACKAGES, is characterized by comprising a capsular body (1), which configures an outlet conduit for the product to be dispensed, this body having an external diameter, equipped with means (2) of fixation internally to the exit in the form of a circular hole (F) of a usual dispensing package (E), while in its internal diameter is housed, slidingly, an obturator (3) movable longitudinally, as well as its front end has means (4) of watertight sealing for the obturator (3), while its rear end is softly engaged in the center of a flexible sieve (5) and, at this point, said sieve has means to keep said obturator (3) tensioned backwards in order to keep the closed the means (4) watertight, where the closing pressure is overcome by the internal pressure established inside the outlet in the form of a circular hole (F) when activating the usual dispensing package (E).

[0027] In a preferred construction, the fastening means (2) inside the outlet in the form of a circular hole (F) of a usual dispenser package (E) are formed by a circular collar (6) with a central groove (7) for engagement in a circular fillet (8) existing in said outlet in the form of a circular hole (F), and this fixation can also be carried out by simple mechanical interference.

[0028] The capsular body (1) has the ends of its internal diameter defined by staggered sections, in which the anterior one that defines the sealing means (4) has two steps, both greater than 90?, an internal one (9) and an external one that configure the cone-shaped sealing seat (10) for seating the corresponding part of the obturator (3), while at the opposite end of said capsular body (1) there is another step at an angle greater than 90? (11) for seating the flexible sieve (5).

[0029] The obturator (3), in a single piece, comprises an intermediate section longitudinally finned (12), a front head in the form of a bung (13) and a posterior cylindrical tip with a coupling terminal (14), in which the longitudinally finned intermediate section (12) is slidably adjusted to the internal diameter of the capsular body (1), while its front head in the form of a bung (13) has the shape of a circular tablet with a truncated external diameter that rests on the conical sealing seat (10) of the capsular body (1), and also the posterior tip of the coupling terminal (14) of the obturator (3) constitutes irreversible engagement in the spring center of the flexible sieve (5).

[0030] The flexible sieve (5) is defined by an annular section (15), whose external diameter is conical cooperating for seating on the step (11) of the capsular body (1), and the posterior side of the annular section (15) is extended in the form hollow dome defined by flexible links (16) that culminate in a circular center (17) with a penetration hole (18) with interference from the rear coupling tip (14) of the obturator (3).

[0031] With regard to FIG. 6, the assembly and operation of the present retention valve are substantially simple, that is, the assembly takes place with just the insertion of the set in the outlet or outlet hole (F) of the product to be ejected by the usual dispenser (E). In this condition, when there is internal pressure (as indicated by the arrows) at the outlet (F) the product begins to flow towards the sieve (5) and runs through the entire interior of the valve, however, when it encounters the bung (13) this pressure forces the bung (13) out. At this moment, two simultaneous effects occur, since the links (16) of the sieve (5) are flexed inwards and with it the obturator (3) is moved in the same direction, causing the bung (13) to move away from its seat of seal (4) and thus, as indicated by the arrows (S), the product flows out in a controlled manner while there is internal pressure at the outlet (F) of the dispensing pack (E). The product only stops flowing out when the internal pressure is lower than the flexibility strength of the sieve (5), that is, when the internal pressure is lower or ceases to exist, the obturator (3) returns to its original position, thanks to the spring of the sieve whose elastic memory pulls the said obturator even backwards to its original watertight position, completely closing the product outlet, where the residual part remains totally protected from the external environment.