FR2564062A1 - DEVICE FOR CLOSING A SUPPLY ORIFICE FOR PRESSURE RESISTANT CONTAINERS, ESPECIALLY AUTOCLAVES - Google Patents

Abstract

DEVICE FOR CLOSING THE SUPPLY PORT 2 OF A PRESSURE-RESISTANT CONTAINER 1, PRESENTING A COVER 3 ARTICULATED INTO THE EDGE 4 OF THE SUPPLY PORT 2 AND A DRIVE EQUIPMENT 10 PLACED ON THE EXTERIOR FACE OF CONTAINER 1 AND CONNECTED TO COVER 3 BY A TRACTION ELEMENT 13 RETURNED BY A ROLLER 15 PLACED ABOVE THE SUPPLY PORT 2. A SUPPLY CHUTE 7 CLOSED FROM ALL PARTS IS CONNECTED TO THE EXTERIOR OF CONTAINER 1 ON EDGE 4 OF SUPPLY ORIFICE 2, AND ROLLER 15 IS BEARING ON THE EXTERNAL FACE OF THIS CHUTE.

Description

The invention relates to a device for closing a supply orifice

  pressure-resistant containers, in particular autoclaves, having a lid which descends

  inside the container, the outside diameter of this

  ring exceeding the free diameter of the feed orifice, and a drive system for opening or closing the cover resting on the outside of the container, a chute

  supply closed on all sides being supported by the ex-

  tior of the supply orifice and connected in particular O the latter. it is a good idea to place the c (,. iercle so that

  that it is lowered inside the container for P'or-

  screw, because in this way the internal pressure in the rail

  pient or in the autoclave facilitates the tight closing of the lid. Document DE-OS 3 241 784 describes a device of this kind for which the cover is open inside the autoclave. In this known embodiment, the cover is connected by a rod to the drive device formed by a hydraulic piston cylinder. This rod must pass through the chute, and the opening and closing movement

  of the cover is only guided by this rod. The cover

  tle is exposed to significant constraints since the pieces of material arriving through the chute fall on the cover when the latter is in the open position, and a guide of this kind using a rod is therefore strongly

  stressed, exposed to damage and costly. Independent

  ment of that, the cover in the low position obstructs the passage of, ,, hoops of material or coal in the autoclave, this

  which extends the time required to fill the autoclave.

  The invention aims to create a device

  rcbust and safe allowing to actuate the cover and

  shorten the time required to fill the container. To this end, the invention essentially consists in articulating

  inward the cover on the edge of the feed hole

  mentation, to support the system on the 3 outside surface of the container itself, to connect it at least by a traction element to the cover and to support

  the feed chute above the feed hole

  tation return equipment for the traction element.

  Since the cover is hinged on the edge of the supply port and is not guided downwards by a vertical rod, the cover in the open position completely releases the supply port. This results in a reduction in the time it takes to fill the container with pieces of material. An autoclave of this kind is particularly suitable for the coal drying process according to Fleissner. According to a

  such process, the coal to dry is introduced into the car

  clave and then pressurized with superheated steam or saturated steam. By shortening the filling time,

  we also shorten the time required to complete the

  peration as a whole. We also get a good guide

  lid lid for opening and closing movement

  ture. When the cover is guided by a rod, as is the case with the known embodiment, there is a risk that

  the rod is damaged or bent by the filling material

  wise, which hinders a secure closure of the lid. The fact that the cover is closed and opened with a pulling element eliminates this danger of damage to the secure guide of the cover. The guidance of a rod above the orifice

  filling the feed chute is not accurate.

  The fact that on the realization according to the invention

  tion only a return system for the traction element is supported on the feed chute and that the control of the cover is done by the traction element, avoids inaccuracies which may occur due to the support sure

  the feed chute does not affect the function of the

  circle. We also obtain a higher filling of the autoclave, because the lid folded down only plunges with a marginal area in the filling material,

  when the filling level of the autoclave is higher.

  According to the invention, it is advisable to

  ticulate the cover with play perpendicular to the plane of the edge of the supply orifice. This can be easily implemented by guiding the hinge pin of the cover in oblong holes perpendicular to the plane of the edge of

  the supply port. This game allows, in the last pha-

  closing, raise the cover vertically

  of the traction element and press it regularly on

  its entire circumference against the sealing edge of the ori-

  power supply. According to the invention, the cover presented

  preferably a console projecting upwards, in which the traction element is caught at a

  certain distance from the plane of the cover and the center

  be of the latter. This facilitates centering of the cover at

  when it is placed on the sealing edge of the ori-

  power supply. For this purpose, the upper part of the neck

  vercle is preferably covered by a coating in form

  me of pyramid or cone, the traction element being in pri-

  stand at the tip of the pyramid or cone of the covering. This re-

  clothing prevents material or charcoal from remaining on the

  lid. The cover is heavy.

  For better stability, the console

  according to the invention can be designed from sheet metal

  created in the shape of stars perpendicular to the cover and

  having roughly the shape of triangles, these sheets being also

  Lately covered by shaped covering surfaces

pyramid or cone.

  An advantageous embodiment of the invention provides for installation so that the edge of the supply orifice and the cover have conical bearing faces, and that a circular pipe fitted with outlet nozzles is placed under the edge of the feed port which is cut by the generators of the conical surface of the edge of the feed port. Steam or air

  tablet is injected through these outlet nozzles during the last

  closing phase of the cover and, since this circular pipe is cut by the generators of the conical surface, the jets pass along the generators of the cones through the space between the cover

  and the edge of the feed hole and clean this

  pace, thus ensuring a tight closure.

  According to the invention, the feed chute

  which is located between a shut-off valve separating a feed silo

  mentation and the autoclave, is retractable; it can in particular be moved laterally on sliding rails

  mounted on the valve frame. The weight of the gou-

  monkfish can be supported by gear-

  auxiliary vage, which allows it to be moved laterally-

  no big problem. By removing this part, you can access the cover, at the edge of the supply orifice

  as well as the shut-off valve to carry out cleaning work.

toyage and repair.

  According to the invention, it is advisable to provide the drive equipment in the form of a hydraulic piston cylinder, the traction element in the form of a chain or

  of a cable and return equipment in the form of a roll.

  The invention is explained schematically in the drawing with the aid of exemplary embodiments. Figure 1 shows

  a vertical section of an autoclave with its feed chute

  tation, Fig. 2 shows a top view of a form of

  embodiment of the cover and FIG. 3 shows larger

  scale the joint of the cover on the edge of the orifice

autoclave supply.

  The autoclave 1 has on its upper face an orifice

  supply port 2 closed by a cover 3. The cover 3 is articulated on the edge 4 of the supply orifice using a pivot 5 and can open downwards to come into position 3 'shown in dotted lines. A bead 6 is welded to the wall 9 of the autoclave 1 on which the edge 4 of the feed orifice 2 has been screwed. A feed chute 7 is fixed by screws 8 (see Fig. 3 ) at

  edge 4 of the supply port 2. A hydraulic piston cylinder

  hydraulic 10 pivots around an axis ll on the wall 9 of the

  toclave 1. The cover 3 has a protruding console 12

  to the top. A traction element 13, for example a chain

  ne or a cable, connects the upper end 14 of the console 12 to the piston jack 10. The traction element 13 is guided by a deflection device 15 formed by a roller bearing on the chute 7. The piston jack hydraulic 10 lowers the cover 3 to the open position 3 '. The repè-

  re 16 indicates the maximum filling height of the autoclave.

  The cover 3 can dive into the open position 3 '

  in the filling cone 16, only its closing movement

  ture forcing it to push back a small amount of material

filling.

  As also shown in FIG. 2, the cover has two claws 17 curved, on which is fixed & a pivot 5. The pivot 5 is guided in lugs 18 welded

  to the bead 6 and which have oblong holes 29 perpen-

  dicular to the plane of the edge 4 of the filling orifice 2.

  In the last closing phase, the cover can therefore

  be lifted vertically so that its surfaces of É-

  taper seals 19 come to bear on the sealing surfaces

  conical and hollow sealing 20 of the edge 4 of the orifice

  supply 2. Reference 21 is a sealing element.

  In the exemplary embodiments of FIGS. 1 and 3, the

  console 12 is constituted by sheets 22 in the form of pyra-

  mide, point 14, on which the traction element 13 is in

  taken, being at the tip of the pyramid. As my-

  be Fig. 2, the console 12 can also consist of triangular sheets 23 placed in the shape of stars. Sure

  this embodiment, these sheets 23 can be equally

  coated on the outside with sheets 22, these sheets 22

  may be lower to take account of the plates 23 plates

created in the shape of stars.

  The guide of the pivot 5 in the oblong holes 29

  creates in the last phase of the closing process an

  cone-shaped space between the sealing surfaces 19 and

  , which is closed as the cover rises.

  An annular pipe 24 is placed under the edge 4 of the supply orifice and cut by the generators of the conical sealing surface 20. This annular pipe has nozzles for injecting steam or compressed air. Steam or compressed air is injected through these nozzles to the generators through the cone-shaped space of the lid existing in the last phase of the lid closing process, which has the effect of cleaning

this space.

  Reference 25 is a coal or similar material supply silo. A valve 26 controlled by a jack

  with hydraulic piston 27 separates the chute 7 from the feed silo

  before closing the cover 3. The feed chute

  mentation 7 is placed between a frame of the valve 28 and the -

  fixed edge 4 of the feed orifice; this additional chute

  carries the gear 15 and its upper element 7 '

  joins the valve frame 28 through a 7 "tubing.

  feeding monkfish 7 can be moved on rails

  sliding connected to the valve frame 28 along the con-

  lateral support sole and equipped with a hooking eyelet which is not shown. This allows to lift laterally

  the feed chute 7 above the sliding rails

  using lifting equipment. To this end, the traction element 13 is detached from the jack 10. The lateral ascent of

  the feed chute 7 clears the feed orifices

  tion 2 and valve 26, thus allowing to proceed with any

  facilitates cleaning and repair work on the cover 3, on the edge 4 of the supply port 2

and also on valve 26.

  Finally, the feed port 2 of the autoclave 1 has an open funnel 30 for feeding which guides

  pieces of material or coal along the longitu-

  dinal of the autoclave, and thus protects the wall 9 of the autoclave

clave against wear.

R E V END I C A T I ONS

  1 device for closing a supply port for pressure-resistant containers, in particular autoclaves,

  comprising a cover (3) which descends inside the tank

  container, the outside diameter of this cover exceeding the free diameter of the supply orifice (2), and a system

  drive (10) to open or close the cover when

  then outside the container, a feed chute

  closed on all sides being supported outside the ori-

  power supply and connected in particular to the latter, charac-

  terized in that the cover '3) is hinged inwardly

  laughing on the edge (4) of the feed orifice (2), in that the drive system (10) is supported on the face

  outside of the container (1) itself and connected by at least one

  traction element (13) to the cover (3), and in that an element

  return gear (15) for the traction element (13) is in

  support on the feed chute (17) above the ori-

power supply (2).

  2 - Device according to claim 1, character-

  in that the cover (3) is hinged with constant play

  particularly in the plane of the edge (4) this the supply orifice (2).

  3 - Device according to claim 2, character-

  in that the hinge pin (5) of the cover (3) is guided in oblong holes (29) perpendicular to the plane

  from the edge (4) of the supply orifice (2).

  4 - Device according to claim 1, 2 or 3, ca-

  characterized in that the cover (3) is provided with a console (12) projecting upwards, on which the element (13) is caught at a certain distance from the plane of the cover

and in the center of the cover (3).

  - Device according to one of claims 1 to

  4, characterized in that the upper face of the cover (3) is covered by a coating (22) in the form of a pyramid or cone and the traction element (13) is engaged at the

  tip (14) of the pyramid or cone of the covering (22).

  6 - Device according to one of claims 1 to

  , characterized in that the console (12) consists of approximately triangular and perpendicular sheets (23)

  with the cover (3), placed in the shape of stars which are covered

  green if necessary by shaped covering surfaces

me of pyramid and cone.

  7 - Device according to one of claims 1 to

  6, characterized in that the edge (4) of the feed orifice

  tation (2) and the cover (3) have support surfaces

  10 conical pipes (19, 20) and that an annular pipe (24) pre-

  sensing outlet nozzles is placed under the edge (4) of the supply orifice (2), this pipe being cut

  by the generatrices of the conical surface of the edge (4) of the o

supply port (2).

  8 - Device according to one of claims 1 to

  7, characterized in that the feed chute (7) places

  between a stop valve (26) separating a feed silo

  tion (25) and the autoclave (1) is retractable, in particular

can be placed laterally.

  9 - Device according to one of claims 1 to

  8, characterized in that the drive system is

  clamped by a hydraulic piston cylinder (10O), the traction element (13) by a chain or cable and the

return (15) by a roller.

  O10 - Device according to one of claims 1 to

  9, characterized in that the feed funnel (30) guides

  of the pieces of material along the longitudinal axis of the

  pressure-resistant container (1).