FR2474824A1 - DEVICE FOR THE CONTINUOUS DISCHARGE OF PASTA MATERIAL - Google Patents

Abstract

THIS DEVICE INCLUDES A CHAMBER HAVING A REVOLUTION SHAPE, BOUNDARED BY A SPHERICAL 7 OR TORIC SURFACE, AND EQUIPPED WITH A FLAT COVER 8. ON THE AXIS OF THIS CHAMBER TOWELS A ROTOR 11 CARRYING PALLETS 24 WHICH CAN SLIDE IN GROOVES 18 BETWEEN SURFACE 7 AND A SURFACE 15 OF CORRESPONDING SHAPE OF THE ROTOR, FACING SURFACE 7. A CAM 21 CONTROLS THE MOVEMENTS OF THE PALLETS TO PASS THEM UNDER THE PARTITION LOCATED IMMEDIATELY DOWNSTREAM OF OUTPUT 32 OR PUSH THEM AGAINST THE LOWER SIDE OF THE COVER. A TYPICAL EXAMPLE OF APPLICATION OF THIS TYPE OF DEVICE CONSISTS OF IN MACHINES USED FOR THE CONTINUOUS MANUFACTURE OF SAUSAGES, IN WHICH THE MASS OF MINCED MEAT IS CONTINUOUSLY DELIVERED INTO A NATURAL OR SYNTHETIC TUBE THROUGH A BUSH.

Description

The present invention relates to per-

operations applicable to devices used to

  continuously walk on various substances or materials which

  are in the form of a paste or mass.

A typical example of application of this type of

devices consists of the machines used for fa-

  continuous bricage of sausages, in which the mass of minced meat is continuously pumped into a

  natural or synthetic casing through a socket.

In general, devices of this type include

  nent a cylindrical chamber and a rotor rotating in this-

  te room arranged so as to provide a room between them

annular bre which is interrupted at a point on its periphery

laughed by a partition secured to the cylindrical chamber and,

  a series of pallets which lean against the surfaces

dull of the annular chamber and are mounted on the rotor so as to withdraw from this chamber to cross the

  partition. An outlet of the pumped mass is pre-

  view immediately upstream of the bulkhead and the entrance to the

  dough is made through an orifice located at an intermediate point

  re of the annular chamber. All these elements are analogous to those of the known vane pumps which are used for

the delivery of different fluids.

The problem is that he was born

  stop providing appropriate devices which have to exert significant efforts, to drive the pallets between the position in which they retract out of the chamber and the delivery position in which

they penetrate into the latter to repel the

te to the outlet. On the other hand, these devices

  require considerable space, in the sense that the mechanic

me is usually made in a cylindrical form in

  which the pallets move parallel to the axis.

All this considerably complicates the operations of net-

the mechanism, creates a risk of contamination of the

meat handled by the residues and, moreover, is

duit by excessive dimensions.

  The present invention aims to eliminate these

  suitable for treading devices of the aforementioned type and is more particularly applicable to devices used in its machines intended for the manufacture of sausages.

  According to this invention, the annular chamber is

  mé so as to present at least one surface of revolution-

  tion whose generator is an arc having a center

  be inside the chamber and which forms a guide for the movement of the vanes, which have the shape of sectors of a circle and are mounted radially in the rotor, between a control cam adjacent to one of the ends of the surface of revolution, and a limit area of the chamber

  adjacent to the opposite end of this surface-revo-

lution.

In this way, the pallets are controlled by the corresponding cam and the space required on the rear face of the rotor is strictly limited to that

which corresponds to the pallet control cam.

In a preferred embodiment of the invention,

  Note, the chamber has a hemispherical internal surface and the rotor is coaxial with this chamber. It has a wall

  which presses on the surface of the annular chamber, a hollow

  lower or central housing of the control cam

  pallets, .and grooves, located in flat planes

  dials, the bottom of which corresponds to circumferential generators

  concentric with those of the surface of the cham-

bre, so that the pallets mounted in these grooves de-

  write a circular path between the two surfaces

  of the chamber and of the oppo- rotor respectively

  face to face. The pallet control cam is therefore

  formed by a spherical ring-shaped part which is

tee around the central part of the rotor and whose edge

  circumferential forms the control profile of the pallets.

According to another characteristic of the

vention, the chamber is limited by an inner toric surface, the rotor has a circumferential edge which coincides with the axis of the generatrices of the toric surface, and the vanes are guided by this surface and pivot around the edge. In this case, the cam is constituted by an annular part, mounted around the lower part of the rotor, which presses on the lower surface of the toric chamber and whose circumferential edge follows the control profile

pallets.

  The characteristics and advantages of the

vention will appear elsewhere during the description

which follows, of preferred embodiments, represented

  to the accompanying drawings and given only by way of examples.

  Fig. 1 is an axial section of a pump

  full of minced meat, with the following improvements

  before the invention; Fig. 2 is a horizontal section along the reference plane II-II of FIG. 1; Fig. 3 is a view similar to FIG. 1, in the case of a pump comprising an O-ring chamber; and Fig. 4 is a view similar to FIG. 2,

  in section along plane IV-IV of FIG. 3.

As can be seen in the drawings, the

  pump mechanism includes a cup-shaped body 1

te, extended downwards by a tubular connection 2 which can end with the most suitable mounting means

  for each case considered. Inside this touril-

lonne, by means of bearings such as bearing 3. The rear

  entrainment bre 4 which protrudes inside the

bowl by forming a coupling pin 5.

  A class 6 type seal

  sic, mounted on shaft 4 immediately above the road

also 3, hermetically insulates the bowl from the internal volume

laughter of the support 2. The internal surface of the bowl, desi-

  hindered by the reference 7 is hemispherical, and the opening of the bowl is closed by a cover 8 which is adjusted in a conical bearing 9 and has a lower face

  having the shape of a flat surface 10.

  On the coupling pin 5 a means or

rotor designated as a whole by the reference 11, is my-

  preferably by means of a delivery device

  easily removable, of a conventional type, not shown in the drawings. This rotor it comprises a central part 12 by which it couples to the shaft and which is

surmounted by a hemispherical body 13 comprising a surface

this upper planar 14 which, in the operating position

presses against the surface 10 of the cover, and a sur-

  lateral face formed by two spherical segments 15 and 16 separated by a conical partition 17 which extends up to

  surface 7 in an approximately bisectri-

this from the angle between the shaft and the bowl cover.

The partition 17 and the inner spherical part 16 are connected.

cut from a series of slots 18, which are located in radial planes with respect to the assembly and whose bottoms

  are in the extension of the upper spherical surface

re 15.

  The central part or the bottom of the surface

  7 has a scope 19 having the shape of a shoulder

  rectangular that surrounds the interior volume of the sup-

port 2 and in which a shoulder 20, of complementary shape, which projects on the lower part

  of an annular cam 21. The lower surface of this cam

  me adjusts in the surface 7 of the bowl and its wall la-

teral forms a cam profile comprising two short heights

  different dials 22 and 23 which each extend approxi-

  matively on a half-circumference. The cam formed in this way can be fixed in the position shown in the drawings by conventional means which allow it to be easily dismantled for cleaning, for example

  by a device comprising a lug and a cavity.

In each of the slots 18 is mounted a pallet, designated as a whole by the reference 24, which is constituted by a flat plate comprising two opposite edges 25 and 26 which rest respectively on the surfaces 7 and 15 of the bowl and of the rotor, and two other opposite edges 27 and 28 of which the first is intended to come

  lean on the surface 10 of the cover while the second-

  forms a counter-cam which is constantly applied against the cam profile 22-23. It is therefore easy to understand that the pallets 24 can move along an arc of circumference whose center coincides with the center of the spherical surfaces 15 and 16 between the lower position

  shown on the left in Fig. 1 and a higher position

  re, not shown, in which the upper edge 27 bears against the surface 10 of the cover, these positions

  being a function of the part of the cam on which the puck

considered you leans.

In Fig. 2, we can see that the bowl 1

  has approximately at the level of the center of the lower part

23 of the cam, a partition 29 which supports, first

  against the surface 10 of the cover, then against the surface

this spherical 15 of the rotor and against the conical surface above

  laughter 30 of the partition 17, so that the annular chamber which is formed above this partition 17 is interrupted by the partition 29. Immediately upstream of this partition, if we consider that the rotor turns in the direction indicated by the arrow 31, there is an outlet orifice 32 which is tangential so as to facilitate the outlet of the material and into which one can mount, by conventional means, for example by means of a threaded ring 33, a socket 34 sure

  which is put on the hose intended to receive the ha-

chée repressed by the mechanism described. The entrance of the meat

  takes place, for example, by means of a hopper 35 which opens out

che in an opening formed at a point diametrically

opposite the cover 8.

It appears from the above that the pallets-

your 24 after crossing the partition 29 meet a ram-

  eg 36 which forms the transition between the low 23 and high 22 zones of the cam, and then arrive at their high position,

2474824 1

  in which they divide the annular chamber into as many

of independent co-parties, which imprison portals

  tions of minced meat which are pushed successively in the direction of the arrow. When the pallets 24 approach the partition 29 which intercepts their passage, they meet a descending ramp 37, which allows them to pass under this partition and to start a new cycle of

  repression similar to that just described.

  In the embodiment of Figures 3 and 4, the operating principle is exactly the same, only the geometric shapes of some of the elements described vary.

upper.

  This is how the internal surface 7a of the

  bowl 1, corresponds to the external part of a surface to-

  risk. The rotor 11a has a cylindrical upper surface.

drique 15a, a radial partition 19a and grooves 18a which

  have a stepped shape that defines an inter-

  medial 38 around which each of the pallets oscillates

  24a and which is located in the center of the generators of the sur-

  toroidal face. In this case, the pallets have an upper edge which bears against the cylindrical surface 15a and a

edge 28 which forms a counter-cam as in the previous case.

The shape of the cam 21a is slightly different to fit

  ter to the new construction and it is clearly represented

felt in FIG. 3. The other elements of this mode of reaction

pump which are not described in detail in exercise

hundred the same functions in the previous case and are de-

signed by the same references.

The simplicity of the delivery device

  according to the invention is clear from the description. I,

Disassembly of such a device for cleaning is extremely easy and quick. On the other hand, at equal capacity, the height of the assembly represents only one

  fraction of the height that would be required with the dis-

known positive.

Claims (5)

  1. Continuous delivery device for materials presented in the form of paste, of the type which takes a body and a rotor arranged so as to form   They are an annular chamber into which an inlet and an outlet of materials to be discharged open and which is inter- ruptured by a partition located immediately downstream of the ori-   outlet, the rotor being equipped with thrust vanes which withdraw from the annular chamber to pass through the partition, characterized in that the annular chamber has a   shape such that it has at least one surface of revolution   tion (7; 7a) whose generatrices are arcs of a circle having their center inside the chamber and form at least one guide for the movement of pallets (24 t 24a) in the form of sectors which are mounted radially in the rotor, between a control cam (21; 21a), adjacent to one of the ends of the surface of revolution (7 r 7a)   and a boundary surface (10) of the chamber adjacent to the former   opposite end of the surface of revolution. 2. Device according to claim 1, characterized in that the chamber has an interior surface (7) which is hemispherical while the rotor is coaxial with this surface, comprises a conical partition which presses on this surface to delimit the annular chamber, a central space for receiving the cam (21, 21a) requires pallets (24), and grooves (18, 18a) located in radial planes and whose bottoms correspond to circular generators, concentric to those of the sur-   faces of the chamber so that the pallets (24) mounted in the grooves describe a path in an arc between two opposite spherical surfaces (7 and 16) facing each other which belong respectively to the chamber and to the rotor (11).   3, Device according to one of claims 1 and 2, characterized in that the cam (21) for controlling the 2474824]   pallets (24) consists of a ring-shaped part   spherical, mounted around the central part (12) of the   tor and whose circumferential edge forms the profile of com- pallets (24). 4. Device according to claim 1, characterized in that the chamber is limited by an internal toric surface (7a), while the rotor (11ia) has a circumferential edge (38) which coincides with the axis of the generatrices of the surface toric and that the pallets (24a) are guided by this surface to describe a movement   rotation around the edge (38).   5. Device according to one of the claims 1 to 4, characterized in that the cam (21a) for controlling the pallets (24a) is constituted by an annular piece mounted around the lower part (12) of the rotor (lia)   which is fitted in the bottom surface of the to-   rique and whose circumferential edge forms the profile of order pallets.