FR3056204A1 - IMPROVED LIQUID RECOVERY DEVICE - Google Patents

Abstract

This liquid recovery device comprises a liquid storage bag (P) made of plastic, a tip (2) comprising an internal passage intended to communicate with the internal volume of the bag, and an adapter (3) comprising a drain head and rotatably mounted relative to the nozzle. It comprises a vent (18) adapted to allow the evacuation of the air contained in the bag during its filling, said vent opening outwardly through the adapter.

Description

056 204

58900 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:

(to be used only for reproduction orders)

©) National registration number

COURBEVOIE © IntCI ⁸ : B 67 D 1/08 (2017.01)

PATENT INVENTION APPLICATION

A1

®) Date of filing: 09.22.16. ©) Applicant (s): CRYL - FR. (© Priority: @ Inventor (s): GRICOURT YVES. ©) Date of public availability of the request: 23.03.18 Bulletin 18/12. ©) List of documents cited in the preliminary search report: See the end of this booklet (© References to other related national documents: ©) Holder (s): CRYL. ©) Extension request (s): (© Agent (s): CASALONGA.

165 / IMPROVED LIQUID RECOVERY DEVICE.

FR 3 056 204 - A1 _ This device for recovering a liquid comprises a pocket (P) for storing the liquid made of plastic, a nozzle (2) comprising an internal passage intended to communicate with the internal volume of the pocket, and an adapter (3) comprising a drain head and mounted for rotation relative to the nozzle.

It comprises a vent (18) capable of allowing the evacuation of the air contained in the bag during its filling, said vent opening outwards through the adapter.

Improved liquid recovery device

The present invention relates, in general, to a liquid recovery bag.

In various applications, the liquid can consist of blood, water, urine, or any other liquid.

But in a particularly interesting interpretation of the invention, the recovery bag according to the invention is intended for draining the oil present in a sump. However, of course, it is not outside the scope of the invention when it comes to draining any other liquid, such as a coolant, a cutting fluid for a machine tool, ...

With regard to liquids such as water, blood, urine or other biological liquids of this type, plastic bags are conventionally used made by cutting flat two sheets of flexible plastic and welding the sheets. They are fitted with a filling tube inserted between the two films. The two films and the tube are welded together by high frequency welding.

This technique has a number of major drawbacks.

First, the production of bags is relatively delicate and requires the use of very expensive machines. It is indeed necessary both to deform the plastic film so that it is applied against the tube and to perform the welding on the periphery of the pocket. The risks of leaks are significant.

Secondly, the filling tube, which is introduced between the two films, forms a relief often detrimental to its use, for example for urinary bags which can be hidden under clothing.

This filling tube also imposes storage and transport constraints because it is less flexible and thicker than the bag itself.

Regardless of the problems associated with the production of pockets of this type, the pockets are equipped with a nozzle which is, for example, mounted on the end of a conduit which communicates with the pocket. An adapter fitted with a drain head can also be provided.

During filling, the liquid to be recovered circulates through the adapter, the nozzle, to be recovered in the pocket. It has been found that the flow of liquid is not optimal.

In view of the above, the object of the invention is to provide a liquid recovery device which facilitates the flow of liquid in the pocket.

The subject of the invention is therefore a device for recovering a liquid, comprising a liquid storage pocket made of plastic, a nozzle comprising an internal passage intended to communicate with the internal volume of the pocket, and an adapter mounted on the nozzle and comprising a drain head.

This device comprises a vent capable of allowing the evacuation of the air contained in the pocket during its filling, said vent opening outwardly through the adapter.

In one embodiment, the adapter comprises a freely rotatable ring with respect to the emptying head and comprising a thread cooperating with a thread of the end piece, the vent being formed by providing a clearance between the ring and the adapter .

In one embodiment, the pocket comprises a first sheath with a closed contour comprising two mutually opposite ends closed by welding to form a bag for storing the liquid and a second sheath of diameter smaller than the first sheath and constituting a conduit comprising a first end closed by welding and an opposite end open, the first sheath and the second sheath comprising respective openings positioned facing each other. The edge of the opening of one duct is welded to the edge of the opening of the other duct.

According to another characteristic of the recovery device according to the invention, a folded tongue is positioned in the second sheath in the vicinity of the open end so that the axis of the fold extends axially in the second sheath.

In one embodiment, the end piece comprises a generally cylindrical rigid body comprising an axial passage extending on either side of the end piece and shaped so as to fit into the second sheath, an annular piece shaped to position around the second sheath and the body and an O-ring, the body comprising a peripheral groove capable of receiving the seal, with interposition of the sheath so that the seal extends laterally in relation to the body resting against the annular part.

Advantageously, the groove is delimited by first, second and third annular faces respectively proximal, median and distal, which constitute bearing surfaces of the sheath, the first annular proximal face extending perpendicular to the general axis of the body, the second annular median face extending perpendicular to the first face and the third annular distal face constituting a ramp diverging outward from the second face.

According to another embodiment, the end piece is welded to the pocket, the end piece and the adapter comprising complementary assembly means, an O-ring being interposed between the end piece and the adapter. It can be a snap or screw connection.

In the embodiment in which the end piece comprises a body mounted in the sheath or welded to the sheath, the vent is produced in the body of the end piece. However, when the adapter is screwed onto the nozzle, it has a rotating ring relative to the drain head. The vent is then formed by the clearance present between the ring and the rotary head.

Provision may be made for the device to include an attached plug which is screwed onto the adapter, with the interposition of a first sealing joint of an outlet channel of the head of the adapter and a second sealing joint. of the vent.

Advantageously, the device comprises a handle for controlling the rotation of the head of the adapter.

In addition, the adapter may include a guide finger which fits into a groove in the support.

Other objects, characteristics and advantages of the invention will appear on reading the following description, given solely by way of non-limiting example, and made with reference to the appended drawings in which:

- Figure 1 is an exploded perspective view of a first embodiment of a liquid recovery device according to the invention, attached to a pocket;

- Figure 2 is an exploded view of the nozzle adapter assembly of the device of Figure 1;

- Figure 3 is an exploded sectional view of the tip-adapter assembly of Figure 2;

- Figure 4 illustrates another embodiment of a liquid recovery device according to the invention;

- Figure 5 illustrates the assembly of the adapter;

- Figure 6 is a view of the folded tongue coming to be mounted in the sheath;

- Figures 7 and 8 illustrate a particular embodiment of a liquid recovery device according to the invention; and

- Figure 9 illustrates yet another embodiment of a device according to the invention.

Reference will first be made to FIGS. 1 to 3 which illustrate a first embodiment of a liquid recovery device according to the invention, designated by the general reference numeral 1.

This device 1 is intended to be mounted on a liquid storage bag P.

As can be seen, it essentially comprises a nozzle 2 and an adapter 3 on which a drain head 4 is mounted.

The device also has a plug 5 which is screwed onto the adapter.

In the embodiment illustrated in Figures 1 to 3, the end piece 2 is generally cylindrical and is provided with a through passage P. It has a base E through which the end piece 2 is welded to the pocket P around an orifice O dedicated to filling the pocket. Externally, the end-piece has a groove 4 for snap-fitting of the adapter 3 as well as a peripheral annular groove in which an O-ring 5 is housed.

The adapter comprises, in turn, a cylindrical skirt 6 internally comprising, successively, a peripheral rib 7 provided with a ramp 8 intended to snap into the groove 4 of the end fitting as well as an annular groove 9 intended to receive the O-ring 5. The skirt 6 is extended by a handle P 'consisting of two lateral gripping tabs used to rotate the adapter and the head 4 which it carries relative to the endpiece and facilitating the transport of the poached.

The head 4 is for example produced in accordance with the description of patent application FR 1 259 326. It is a hexagonal head provided with an axial liquid passage which opens outwardly towards the outside of the device and , internally, in a passage provided in the adapter, which communicates with the passage P of the nozzle.

The head 4 is in particular intended to engage in a rotary valve fitted to a casing to be drained. It should be noted that the head constitutes an added element which comes to be mounted in the adapter.

It has for this purpose a hexagonal end 10 which is mounted in a hexagonal housing 11 formed in the adapter. A circlip 12 maintains the head 4 in the adapter. Thus, in the assembled state, the head 4 extends projecting from the adapter.

The plug then adopts a shape complementary to that of the adapter and of the emptying head 4 and comprises a first part 13 provided with an internal thread intended to cooperate with a complementary thread 14 formed on the adapter and a second part 15 intended to receive the drain head 4.

Note that the drain head 4 is intended to fit into a quarter-turn type rotary valve. Thus, the base E is provided with guide grooves 16 into which are inserted pins 17 provided at the end of the skirt 6 of the adapter.

In order to facilitate filling of the bag P, the adapter is provided with a vent 18 produced in the form of a hole made at the level of the annular shoulder of the adapter extending between the head 4 and the portion threaded 14.

This vent allows the air in the pocket to escape to the outside when it is filled.

After filling, the plug is screwed onto the adapter with the interposition of a first seal 19 (Figures 1 and 3) which closes the axial outlet orifice of the head 4 and a second seal 20 which closes the '' vent 18.

The pocket can then be easily transported by means of the grip handle 9.

In the embodiment described with reference to Figures 1 to 3, the liquid recovery device comprises a tip on which the adapter is mounted and which is welded directly around an orifice made in the storage pocket.

In the embodiments of FIGS. 4 to 8, the end piece is mounted in leaktight manner on the open end of a sheath G which communicates with the storage pocket.

In this embodiment, the pocket can be made from two sheaths, namely a first sheath of relatively large diameter, to form a liquid storage bag and the sheath G, visible in particular in Figure 4, which has a relatively small diameter to form a conduit which opens into the bag.

As shown in Figure 4, the end piece, designated by the reference 22, has a threaded portion 23 which extends projecting from the sheath G.

The adapter 24 has, for its part, a ring 25 mounted so as to rotate freely on the head 26 of the adapter.

The ring 25 has internally a thread intended to cooperate with the threaded zone 23 of the end piece.

As can be seen, and as described above, the head 26 is a hexagonal head provided with an axial liquid passage which opens outwards and into an internal axial passage of the adapter, on the one hand, and of the mouthpiece, on the other hand.

The adapter is also completed by a grip handle 27 ensuring the rotation of the head relative to the ring 25 to actuate a rotary valve of a casing to be drained. For example, as illustrated in FIG. 5, the mounting of the ring 25 on the head of the adapter is carried out by means of a bolt 28 provided with an axial hole 29 and which engages in a complementary thread 30 practiced in the head 26. The vent allowing the evacuation of the air from the bag during its filling is carried out by providing a clearance between the ring 25 and the head 26.

Referring to Figure 6, there is advantageously a tongue 31 comprising two sides 33 and 33a connected by a fold 32 forming an obtuse angle. This tongue 31 is positioned in the sheath, in the vicinity of the end piece, so that the fold extends longitudinally in the sheath, in order to improve the flow by keeping the sheath open, avoiding the flattening and the maintenance by adhesion of the sheath in the closed state.

In the embodiment of Figures 4 and 5, the head of the adapter is provided with a manipulation handle. As shown in Figures 7 and 8, this handle remains optional, however. Similarly, in this embodiment, the endpiece, designated by the reference numeral 34 essentially comprises: a rigid body 35, which has a proximal end 36, frustoconical, which is inserted into the sheath G, by its open end , and a distal end 36 which is intended to extend outside the sheath; an O-ring seal 37; and an annular part 38 which is mounted around the open end zone of the sheath G.

In this embodiment, the adapter is integrated into the end piece which form a single piece.

The seal 37 is mounted in an annular groove G ’formed in the middle part of the outer peripheral surface of the body, with the interposition of the sheath G.

In other words, during assembly, the annular part 38, as well as the O-ring 37 are positioned around the open end region of the sheath, while the end piece 34 is inserted, at its end. proximal 36, in the sheath.

As shown in FIG. 7, the groove in which the O-ring 37 is housed is delimited by three annular faces, namely a first proximal face 39, which is turned towards the side of the proximal end 36 of the body, a second median face 40, and a third distal face 41 which is turned towards the side of the distal end 36 of the body.

The first proximal face 39 constitutes an annular shoulder and extends perpendicular to a general longitudinal axis of the body of the nozzle, while the second face 40 is generally cylindrical and extends perpendicular to the first face. The third distal face 41 constitutes, for its part, a frustoconical face which also diverges outwards from the second face 40.

The first face 39 and the second face 40 constitute surfaces for receiving the O-ring 37. The faces 39, 40 and 41 constitute, for their part, bearing faces against which the sheath is applied, during assembly.

In this embodiment, during assembly, the annular part 38 and the seal 37 are positioned around the open end of the sheath, while the body 38 is inserted by its proximal frustoconical end 36 in the sheath.

More precisely, the annular part and the seal are first inserted around the sheath, the body 35 is inserted into the open end of the sheath, then the seal is moved towards the open end, until it fits into the throat G '. This movement of displacement of the joint is facilitated by the truncated cone shape of the proximal end of the body. The annular part 38 is then made to slide until it comes to be fitted around the body.

As can be seen, it is possible to provide, in the body, an annular shoulder 42 which bears against the annular part 38 after assembly of the assembly.

Alternatively, provision could also be made to provide the body with an annular rib which engages in a corresponding groove made in the internal peripheral surface of the annular part 38.

As in the embodiment described above with reference to Figures 1 to 3, the end piece also has a vent hole 43 ensuring the communication of the inside of the sheath with the outside in order to evacuate air when filling the bag.

The assembly is completed by a plug which internally has two seals, one of which closes the outlet orifice of the head of the adapter and the other of which closes the vent hole 43.

Finally, it should be noted that the invention is not limited to the embodiments described.

In fact, in the embodiment of FIGS. 1 to 3, the adapter is snapped onto the end piece, which is itself welded to the pocket. In this case, the vent is made in the body of the adapter.

It would also be possible to mount the adapter by screwing on the end piece, by providing a free threaded ring in rotation on the adapter, as described previously with reference to FIG. 4. In this case, the vent is made by providing clearance between the adapter head and the rotating ring.

Furthermore, in the embodiment of Figures 4 to 8, the end piece, which has a threaded zone on which the adapter is screwed, is mounted on the open end of a flexible sheath.

As can be seen in FIG. 9, in which elements identical to those described previously with reference to FIGS. 4 to 8 bear the same numerical references, the end piece constitutes a rigideο rigid cylindrical handle 45 provided with an axial passage and comprising a base 46 welded to pocket P.

This rigid handle 45 has an end thread onto which an adapter similar to that described above with reference to FIG. 4 is screwed.

In both of these embodiments, the adapter is screwed onto the nozzle during emptying.

After emptying, a cap 47 is screwed onto the end piece to close the bag.

Of course, such an embodiment, in which an adapter is mounted on a handle-shaped end piece welded to the pocket is also compatible with the adapter of FIGS. 1 to 3, screwed or snapped onto the end piece.

Claims (12)

1. Device for recovering a liquid, comprising a pocket (P) for storing the liquid made of plastic, a nozzle (2) comprising an internal passage intended to communicate with the internal volume of the pocket, and an adapter (3 ) mounted on the nozzle and comprising a drain head, characterized in that it comprises a vent (18) capable of allowing the evacuation of the air contained in the bag during its filling, said vent opening towards the outside through the adapter. 2. Device according to claim 1, wherein the adapter comprises a drain head and a ring (25) freely rotatable relative to the drain head and comprising a thread cooperating with a thread of the nozzle, the vent being between the rotating ring of the adapter and the head of the adapter. 3. Device according to one of claims 1 and 2, wherein the pocket comprises a first sheath with a closed contour comprising two mutually opposite ends closed by welding to form a bag for storing the liquid and a second sheath with a diameter less than the first sheath and constituting a conduit comprising a first end closed by welding and an opposite open end, the first sheath and the second sheath comprising respective openings positioned facing each other, and in which the edge of the opening of one of the sheaths is welded with the edge of the opening of the other sheath. 4. Device according to claim 3, comprising a folded tongue (31) positioned in the second sheath in the vicinity of the open end so that the axis (32) of the fold extends axially in the second sheath. 5. Device according to one of claims 3 and 4, wherein the end piece comprises a generally cylindrical rigid body comprising an axial passage opening on either side of the end piece and shaped so as to be inserted in the second sheath, an annular part (38) shaped to be positioned around the second sheath and the body, and an O-ring seal (37), the body comprising a peripheral groove (G ') capable of receiving the seal, with interposition of the sheath so that the seal projects laterally with respect to the body in abutment against the annular part 6. Device according to claim 5, in which the groove is delimited by first, second and third faces (39, 40, 41), respectively proximal, median and distal, which constitute bearing surfaces of the sheath, the first annular proximal face extending perpendicular to the general axis of the body, the second annular median face extending perpendicular to the first face and the third annular distal face constituting a ramp diverging outward from the first face. 7. Device according to claim 1, in which the end piece is welded to the pocket, the end piece and the adapter comprising complementary assembly means (4, 7), an O-ring being interposed between the end piece and the 'adapter. 8. Device according to claim 7, wherein the tip has a shape of hollow cylinder capable of constituting a handle for gripping the pocket. 9. Device according to one of claims 7 and 8, wherein the vent is formed in a body of the adapter. 10. Device according to claim 9, comprising a plug (5) attached coming to be screwed on the adapter, with interposition of a first sealing joint of an outlet channel of the head of the adapter and a second vent sealing joint. 11. Device according to any one of claims 1 to 10, comprising a handle (P ’) for controlling the rotation of the head of the adapter. 12. Device according to claim 11, wherein the adapter comprises a guide finger (17) fitting into a groove (16) formed in the end piece. 1/8