FR2793853A1 - TANK ASSEMBLY - Google Patents

Abstract

Tank assembly, in particular for a hydraulic installation, comprising a suction tube (2) entering a tank and a suction tube cover (4) ensuring the closure of the suction tube (2) with respect to the environment, the suction tube (2) being engaged in an opening of a wall (1) of the tank. At one end of the suction tube (2), provided at the opening, a single element of sealing (3) seals the suction tube (2) with respect to the wall (1) of the reservoir and that of the suction tube (2) with respect to its cover (4). One end (2a) outside the reservoir of the suction tube (2) is bent outward in the peripheral direction to form a double seal with a gasket (3).

Description

The present invention relates to a mounting of

  servoir, in particular for a hydraulic installation, comprising

  both a suction tube entering a tank and a suction tube cover ensuring the closing of the suction tube with respect to the environment, the suction tube being engaged in an opening of a wall of the tank.

  Tank mounts of this type are used

  frequently in machines such as, for example,

  risers as part of a hydraulic installation. The liquid in the reservoir (in the example mentioned, it is hydraulic liquid) is sucked up by the suction tube. In general, the suction tube has a

  filter element which is thus forcefully traversed by the li-

  what. The cover of the suction tube closes this tube with respect to the environment and has a connection means

for a hydraulic line.

  Document DE-297 01 824 U1 publishes a tank assembly of the type defined above. In this document, a suction tube cover is fixed using a tie rod

  on the tank; the tie rod is itself fixed by an

  through the cover of the suction tube and through the other end

  mite at the bottom of the tank opposite the lid. This assembly requires a large number of seals and others

  components; moreover, it is only suitable for one form

tank particular.

  The object of the present invention is to develop a reservoir assembly allowing simple attachment of the suction tube and the tube cover with a reduced number of

components.

  To this end, the invention relates to a reservoir assembly of the type defined above, characterized in that, at one end of the suction tube provided at the opening, a single sealing element ensures sealing of the suction tube relative to the wall of the tank and that of the suction tube relative to its cover. In addition, the seal is connected by a form link to the end of the suction tube located outside the tank. The position of the seal relative to the tube

aspiration is thus defined.

  It is also advantageous if the cover of the suction tube has an annular groove serving to receive the seal. The position of the sealing element is thus fixed by the cover of the suction tube. This is

  necessarily translated by a determined position of the cover

  key relative to the suction tube.

  If the radially outer edge of the annular groove is formed to rest on the upper surface of the wall of the reservoir when the cover of the suction tube is fixed to the wall of the reservoir, the advantage is that the depth of the annular groove and thus the mechanical pressure exerted on the joint are defined by

precisely.

  It is further advantageous that the radial edge-

  inside the annular groove is formed to penetrate

  enter the opening in the tank wall when the

  cover of the suction tube is fixed to the wall of the tank

  see. The cover of the suction tube is thus centered by

  compared to the opening of the tank wall.

  The problem mentioned above is also solved

  in that at one end of the suction tube provided at the level

  calf of the opening, there are two sealing elements, one of the sealing elements ensuring the tightness of the suction tube relative to the wall of the tank and the other

  sealing element sealing the suction tube

  tion relative to the cover, the sealing elements (seals) being housed in grooves provided in the suction tube. The two sealing elements may be identical if the two grooves provided in the

  suction tube have the same diameter.

  Advantageously, the suction tube is formed to rest on the upper surface of the wall of the tank and so that the cover of the suction tube rests on the suction tube when the cover is fixed against the tank wall. The suction tube thus fixes the distance between the suction tube cover and the wall, thus predefining the maximum deformation of the joints. Advantageously, one end of the suction tube outside the tank is bent towards

  outside in the peripheral direction. Under these conditions

  the suction tube cannot fall completely to

through the tank opening.

  It is particularly advantageous if the cover

  suction tube key is removably attached against

  the tank wall. This avoids the necessary drawing

  be in the assembly of the state of the art.

  According to one embodiment, there is provided a

  flange connection to fix the cover of the vacuum tube

  tion against the tank wall. It is for example possible

  ble to weld threaded rods to the wall of the tank to fix the cover of the suction tube using nuts. The present invention will be described below from

  in more detail using exemplary embodiments

  shown schematically in the accompanying drawings, in the-

  which Figures 1 and 2 show tank arrangements

according to the invention.

  Figure 1 shows a detail of a mounting of

  to serve. The wall 1 of the reservoir has an opening in which is engaged a suction tube 2. One end 2a of the suction tube 2 exiting the reservoir is folded outwards. According to the invention, a seal 3 is engaged on the periphery of this folded edge. During engagement on the edge, the seal 3 is elastically deformed

  preferably made of rubber.

  A suction tube cover 4 is fixed by a flange connection against the wall 1 of the tank. The flange connection according to this exemplary embodiment comprises

  several threaded rods 5 welded to the wall 1 of the tank

  see. The cover 4 of the suction tube has holes

  ges 6 associated with threaded rods 5; several threaded rods 5 and holes 6 are distributed around the periphery. By screwing nuts not shown on the threaded rods 5,

  the cover of the suction tube 4 is pressed against the paper

King 1 of the tank.

  The cover 4 of the suction tube has a peripheral groove 7 receiving the seal 3. The outer edge

  8 of the annular groove 7 bears against the wall 1 of the

  to serve; the depth of the groove 7 and thus the degree of

  deformation of the seal 3 are fixed in the assembled state. The ridge

  9 of the annular groove enters the opening of the wall 1 of the reservoir. The cover 4 of the tube

  suction is thus centered in the opening of the wall 1.

  The suction tube 2 includes an element of

  filter 10. During operation of the hy-

  hydraulically, the hydraulic fluid is sucked in through the not shown front face of the suction tube 2 and passes through the peripheral surface of the filter element 10 made of filter material. From the internal volume 10a of the filter element 10, a channel 11 provided in the cover 4 of the suction tube is connected to a hydraulic line not shown. The channel 11 is sealed in relation to the peripheral surface of the filter element by

  a seal lOb integrated into the filter element.

  According to the problem object of the present invention,

  the tank assembly according to the present invention comprises

  installation of a reduced number of parts and in particular this

  only requires a separate seal 3. The assembly of the suction tube 2 and of the cover 4 of this tube is done by means of a simple fixing by flange. The connection by the shape of the sealing element 3 or suction tube 2 prevents the sealing element or seal 3 from slipping. The particular shaping of the groove 7 in the cover 4 of the suction tube avoids damaging the seal 3 during assembly, for example by excessively tightening the

flange connection nuts.

  In the reservoir assembly of FIG. 2, the suction tube 22 is also engaged in the opening of the wall 1 of the reservoir. A seal 23b engaged in a groove of the suction tube 22 seals this suction tube 22 relative to the wall 1. Another seal 23b

  also placed in a groove of the suction tube 22 as-

  on the tightness of the suction tube with respect to the cover

  key 24. The distance between the cover 24 and the wall 1 is thus fixed by the thickness of the suction tube 22. In the

  present embodiment example, this reinforcement is

  dialing outside the seals 23a, 23b.

Claims (8)

R E V E N D I C A T I ON S   1) Assembly of the tank, in particular for a hy-   hydraulics comprising a suction tube (2) penetrating into   a reservoir and a cover (4) of suction tube provided   rant closing the suction tube (2) relative to the environment, the suction tube (2) being engaged in an opening in a wall (1) of the tank, characterized in that at one end of the suction tube (2) provided at   the opening, there is a single sealing element (3) provided   rant the tightness of the suction tube (2) relative to the wall (1) of the tank and that of the suction tube (2) by relative to its cover (4).   2) tank mounting according to claim 1, characterized in that the seal (3) is connected by a form connection at the end   (2a) from the suction tube located outside the tank.   3) mounting of the tank according to claims 1 or 2,   characterized in that the cover (4) of the suction tube has a groove   ring (7) for receiving the seal (3).   4) mounting of rés5ervoir according to claim 3, characterized in that the radially outer edge of the annular groove (7) is formed to rest on the upper surface of the wall (1) of the tank when the cover (4) of the tube   suction is fixed to the wall (1) of the tank.    ) Tank assembly according to claim 3 or 4, characterized in that the radially inner edge of the annular groove (7) is   formed to enter the opening of the wall (1) of the   when the cover (4) of the suction tube is   fixed against the wall (1) of the tank.   6) Assembly of the reservoir, in particular for a hydraulic installation comprising a suction tube (22) penetrating into a reservoir and a cover (24) closing the suction tube (22) with respect to the environment, the suction tube5 (22) being engaged in an opening in a wall (1) of the tank, characterized in that at one end of the suction tube (22) provided at the opening, there is two sealing elements (23a, 23b), one of the sealing elements ensuring the sealing of the suction tube (22) relative to the wall (1) of the tank and   the other sealing element sealing the suction tube (22) relative to the cover (24), the sealing elements (seals) (23a, 23b) being housed in grooves provided in the suction tube (22).   7) mounting the tank according to claim 6, characterized in that the suction tube (22) is formed to rest on the   upper surface of the tank wall (1) and the cover   key (24) of the suction tube rests on the tube   suction (22) when the cover (24) is fixed to the king (1) of the tank.   8) Tank mounting according to any one of the claims   cations 1 to 7, characterized in that one end (2a) outside the tube reservoir   (2, 22) is bent outwards in the di- peripheral rection.   9) tank mounting according to one of claims 1 to   8, characterized in that the cover (4, 24) of the reservoir tube is fixed so   removable from the wall (1) of the tank.    ) Tank mounting according to claim 9, characterized by a flange connection for fixing the tube cover   suction (4, 24) against the wall (1) of the tank. -----