FR2478044A1 - INTERMEDIATE SUPPORT FOR TUBULAR CONVEYOR SCREWS - Google Patents

Abstract

INTERMEDIATE SUPPORT FOR TUBULAR CONVEYOR SCREWS CHARACTERIZED BY THE FACT THAT IT INCLUDES A BODY 9 MANUFACTURED BY MOLDING, SHAPED OF A CYLINDRICAL PART 10 INTENDED TO CONTAIN THE DRIVE 6 OF THE SCREW, WITH A T-RIB 11 EXTENSION SERVING THIS TO SUSPEND CYLINDRICAL PART AND A PAIR OF SUPPORT CALIPERS 13 PARALLEL TO THE AXIS OF THE CONVEYOR AUGER, FIXED TO THE INTERNAL WALLS 14 OF ITS ENCLOSURE AND ON WHICH THE T-EXTENSION 11 IS SUPPORTED AND IS ELASTICALLY PUSHED.

Description

1 CASE 1

  The invention relates to a perfect intermediate support

born for tubular conveyor screws.

  It is known that in tubular conveyor screws used to transport pasty or pulverulent materials, it is often necessary, in order to ensure proper operation.

  ment of these devices when they have an appreciable length

  ble, to use intermediate supports intended for the axis

of the screw and carried by the tubular casing thereof.

Given the kind of mechanical construction practiced for tubular conveyor screws, which is not of external precision, and taking into account often severe constraints likely to cause great heating of the

parts, construction and assembly of intermediate supports

  diaries in these devices has always had serious problems while the use of tubular conveyor screws with supports of this kind has always required adjustments

frequent and complicated point.

  To eliminate these drawbacks, a per-

  made of intermediate support for conveyor screws

  tubular which is the subject of the invention.

  This support is essentially characterized by the fact that it comprises a body manufactured by molding, formed of a cylindrical part intended to contain the trunnion of the screw, of a ribbed T extension serving to suspend this

  cylindrical part and a pair of parallel support brackets

  linked to the axis of the conveyor screw, fixed to internal walls

of its envelope on which the T-shaped extension

leans and is pushed elastically.

  The invention will now be described in more detail with regard to a preferred embodiment represented by the appended drawings in which: FIG. 1 is an axial section of a conveyor screw

  tubular comprising an intermediate support according to the invention

tion and

Figure 2 a cross section of the same screw trans-

carrier, practically perpendicular to Figure 1, for example along arrow A.

The drawings show a tubular conveyor screw

  carrying an envelope 1 inside which rotate,

  to advance the pasty material, two screws 2 and 3 of the same

feel and preferably similar whose trees 4 and 5

are connected to each other by a pin 6, thanks to gou-

  cells 7 and 8, in a manner known per se.

  Also in a known manner, the pin 6 rotates inside an intermediate support of the tubular conveyor screw. According to the invention, the intermediate support is formed of

a body 9 produced by molding, comprising a cylindrical part

drique 10 inside which is inserted the pin 6, an extension 11 in T, ribbed in 12, and a pair of

  support brackets 13 parallel to the axis of the transport screw

teuse and fixed inside two opposite walls 14 cons-

titling deviations and extensions of the cylinder wall

drique of the envelope 1, the extension 11 in T of the body 9 resting on these stirrups. Still, according to the invention, the cooperation of the intermediate support with the pin 6 is effected by means of a self-lubricating bush 15 which, moreover, is supplied with oil through a central peripheral felt 16 provided inside. of the support and itself supplied, via a conduit 17 which passes through the extension 11, with oil introduced into

  a lubricator 18 placed at the top of the extension.

Head rings 19 with seals 20

  seal the bushing with the lubricant.

  The support according to the invention is pushed against the support stirrups 13 by the T-shaped top of the extension 11, by a

cover 22 of an inspection hatch 21 formed by the panels

  lateral kings 14 protruding from the casing 1 and through head walls 23 perpendicular to the preceding ones and connected to the latter and to the casing 1 itself. The cover 22 rests elastically on the support, being provided internally with a

soft pad 24.

The mounting of the support according to the invention, by pressing on the stirrups 13 and blocking by means of the cover 22 with flexible lining 24 allows the support of the sliding limited in the longitudinal direction of the conveyor screw, which also avoids possible inaccuracies of construction that the possible negative consequences of possible variations

in the expansion of the parts constituting the screw transported

  teuse (mainly the tree and the envelope).

  The particular lubrication adopted further greatly prolongs the life of the self-lubricating bushing so that the arrangement according to the invention achieves no progress.

tables in the field of construction and especially of uti-

  rationalization, proper functioning, maintenance

  easy and limited tubular conveyor screws with sup-

intermediate port.

  It is understood that other modes of carrying out the invention

  tion, different from that which has been described, fall within the

part of the invention.

Claims (4)

  1. Intermediate support for tubular conveyor screws   res characterized in that it comprises a body (9) manufacturing qué by molding, formed of a cylindrical part (10) intended to contain the trunnion (6) of the screw, of a ribbed T extension (11) serving to suspend this cylindrical part and of a pair of stirrups support (13) parallel to the axis of the conveyor screw, fixed to internal walls (14) of its casing and on which the T-shaped extension (11) leans and is pushed elastically.   2. Support according to claim 1, characterized in that the cylindrical part (10) of the body (9) of the support cooperates with the pin (6) of the conveyor screw by 1 ' through a self-lubricating bushing (15). 3. Support according to claim 2, characterized in that the self-lubricating bushing (15) is supplied with   oil by a felt (16) which surrounds the central central part and to which oil is supplied via a channel (17) pre-   seen in the T extension (11) of the body (19) and fed   by a lubricator (18) placed at the top of the extension (11). 4. Support according to one of claims 1 to 3, charac-   terrified by the fact that the support brackets (13) are fixed   to walls (14) formed by deviations and extensions elements of the cylindrical wall of the envelope (1) of the conveyor screw, forming two sides of an inspection hatch (21) whose cover (22) also serves to push elastically, thanks to a flexible inner lining (24 ), extension   in T (11) of the body (9) of the support against the support brackets yours (13).