FR2585381A1 - HYDRAULIC CONNECTION MECHANISM FOR THE DRUM OF INDUSTRIAL WASHING MACHINES - Google Patents

Abstract

HYDRAULIC CONNECTION MECHANISM FOR THE DRUM OF INDUSTRIAL WASHING MACHINES CHARACTERIZED BY ITS CONSTITUTION FROM A PAIR OF PROFILES 1 SOLIDLY FIXED ON THE PERIPHERY OF DRUM 2, ON ITS EXTERNAL FACE, WHICH FORM A PERIMETRIC RIBBON 3, EXTERNAL SECTION 3 "U", WHICH RECEIVES AN ANNULAR JOINT 5, ALSO A "U" SECTION, THEIR CONVAVED PARTS FACING. THIS MECHANISM ALLOWS THE ELIMINATION OF THE CLASSIC WRAPPING WALL WHICH ENCLOSES THE DRUM AND WHICH IS EQUIPPED WITH THE CONNECTIONS NECESSARY FOR THE INTRODUCTION OF WATER OR ADDITIVES, FOR THE TAKING OF SAMPLES, THE TAKING OF TEMPERATURES, THE DISCHARGES RESIDUALS, ETC.

Description

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention applies, as indicated by

title of

  this specification, 1 a mechanism that can be used in

  industrial washing machines and specially designed so

  to establish a hydraulic connection with their rotating drum.

  More concretely, this hydraulic connection aims to bring to the drum during its rotation cold water (

  or hot and additives of different types, to

  sampling, checking the temperatures in various areas of the drum and, of course, proceeding with

draining of residual waters.

  As we know, industrial washing machines are based on a continuous operating process, that is to say that inside these was created a washing tunnel where dirty laundry enters one of them. ends, in volumes brought intermittently

  while at the other end opposite goes outside,

  intermittently, the laundry washed.

  This type of washing machines is conventionally provided with a rotating drum placed inside an enveloping wall, so that between this drum which is perforated and the enveloping wall is formed a chamber which communicates directly

  with its internal part by means of the perforated wall; he does not exist.

  therefore no limitation for laying on this wall

  all types of pipes in order to pass

  or in respect of the operations referred to above.

  It is however extremely interesting to have a

  washing machine which does not have this wrapping wall

  because apart from the considerable and

  the elimination of such an element, its disappearance makes the drum rotation and drive mechanisms directly accessible, which facilitates maintenance and repairs, are protected from the fluids with which the machine works, which in turn makes it possible to obtain a greater duration of these elements because they are not subjected to the effects

  moisture, corrosion, etc.

  However, the elimination of this enveloping wall poses a

  problem with regard to the transfer of fluids to the

  laughter because, as we have already said, in this type

  machines that work continuously, the drum is per-

  while on the contrary the pipes for the exchanges of these fluids are static, which makes it difficult to obtain a hermetic assembly between an element

  fixed (the pipes) and a movable element (the drum).

  This problem is solved in a fully satisfactory way thanks to the hydraulic connection mechanism on which is centered

the subject of the present invention.

  This mechanism consists basically of a pair of profiles which are rigidly associated with the periphery of the drum and forming an external groove on which is mounted a U-shaped rubber gasket, provided on each of its lateral branches. a pound with which a perfect seal is obtained between the joint and the pair of profiles,

  because a sealed chamber is formed between the drum, the

wire and the rubber seal.

  The special form of assembly between these elements allows the drum, together with the profiles associated with it, to rotate freely while the rubber seal remains

  static, which makes it sufficient to make the wall la-

  drum, between the two profiles associated with it a series of intercommunication perforations and mount, by means of the appropriate connections, on the rubber seal,

  one or more fluid lines in order to obtain the conne-

  the desired leakage between the fixed elements and

movable elements.

  Thus, thanks to the connection device in question here it is possible to manufacture a washing machine in which the drum, assisted by the corresponding internal elements which remain outside the scope of the invention, can be mounted directly on an engine mount, without the need for any

  type of wall or envelope, this training support, that is,

  the rollers for the support and training of the drum

  bour as well as transmissions and engines, being safe

  of the action of washing fluids and directly accessible.

  To complete this description and to better

  take the features of the invention it was annexed

  in the present specification, as an integral part of that.

  ci, a set of drawings whose character is illustrative and not limiting, which represent the following: FIG. 1 represents a schematic view in side elevation of the drum of an industrial machine, equipped with a

  hydraulic connection mechanism object of the present invention.

  tion, which appears partially sectioned to clearly show its internal structure,

  Figure 2 illustrates a detailed, enlarged and

  FIG. 3 is a view similar to that of FIG. 2, but on which the movable supports of the drum appear and on which it is clearly appreciated which

  these are totally independent of the washing fluid.

  Looking at these figures, it can be observed that the mechanism which is the subject of the invention is obtained from the two profiles 1,

  which solidarize on the outer face of the drum 2, pre-

  ftrence by welding, and ensure a perfect seal. These

  profiles form an external groove 3 whose bottom is con-

  staggered by the wall 2 of the drum, but with the peculiarity

  this wall 2 is provided at this location with

multiple forages 4.

  In the channel 3 thus obtained, which is on the perimeter of the drum 2, as can be seen in FIG. 1, is mounted a rubber seal 5, also perimetric which, as can be appreciated in detail on FIG. 2

  adopt a U-shape; its lateral branches are equipped with

  one of the lips 6 which fall on the lateral profiles 1, thus ensuring a perfect seal between these profiles and

the rubber seal 5.

  In this way, the rubber seal 5 transforms the annular channel 3 of the drum 2 into a closed chamber, but with the

  particularity of that part of this room, ncrXts-

  the one formed by the drum 2 and the plates 1, can rotate freely while maintaining the tightness,

  while the rubber seal 5 remains static.

  It is therefore sufficient to practice in the joint 5 one or more

  orifices on which the containers or connections of

  coupling 7, in order to obtain the connection with the annular chamber

  3 of the respective hydraulic lines, also static

  by means of which it can be brought inside the drum 2, concretely by means of the chamber 3 and the wall

  perforated 4, cold or hot water, different types of addi-

  events, etc .; we can achieve the same way taking

  fluid samples, taking temperatures, etc ;;

  as well as the evacuation of wastewater.

  By means of the mechanism that is the subject of the invention and as can be seen in detail in FIG. 3, it is possible to provide the drum 2 with rolling tracks 8 by which this drum will rest on pairs of rollers 9 mounted on the axes 10 and driven by the corresponding motor unit by means of pulleys 11 associated with these axes, so that all this transmission assembly remains in the open air,

  isolated from the effects of the washing fluid and directly accessible.

  Obviously, the rubber seal 5 will be supported by flange! 12 adequately distributed all along this one, which is

  will allow it to be securely attached to any

  fixed port, such as a bridge installed on the drum itself, while the sealing of its side branches against the profiles 1 can be obtained simply for the same reason

  their elastic nature or with the help of any means

  additionally, for example, resistant rods inserted

  inside, or by any other means.

  We do not think that it is necessary to prolong this

  description because any expert in the field will understand the scope

  of the invention and the advantages thereof.

  The materials, the shape, the size or the arrangement of the elements are subject to change, always insofar as it will not involve any alteration of the essence of the invention.

  The terms in which this memorandum was written should always

  interpreted in a broad and non-restrictive sense.

i

Claims (1)

R E V E N D I C A T I 0 N S   1. Hydraulic connection mechanism for the drum of industrial washing machines which, in order to allow the elimination of the conventional enclosing wall which encloses the drum and which is provided with the connections necessary for the introduction of water or water. additives, for taking samples, taking temperatures, discharging residual liquids, etc., is essentially characterized by its constitution from a pair of profiles (1) firmly fixed on the periphery of the drum (2) , on its external face, which form an outer perimetric groove (3), with a "U" section, which receives an annular seal (5), also with a "U" section, their concave parts facing each other, the annular seal (5) presenting on the outer face of each of its lateral branches a hermetic coupling lip against said profiles (1), all this so that the combination of these elements determines a peripheral chamber (3) which communicates with the inside of the drum by means of a perforated zone (4) thereof, formed between the two profiles (1), in which chamber the hydraulic pipes are brought by means of bins or connections made in the joint. all this so that the drum (2), together with the profiles (1) associated with it, can rotate freely with respect to the rubber seal (5) and the associated pipes, which remain stable and at their turn maintain the seal.