EP0681672B1 - Procede permettant d'acheminer des matieres consistantes contenant des dechets metalliques prebroyes ou des solides analogues - Google Patents

Procede permettant d'acheminer des matieres consistantes contenant des dechets metalliques prebroyes ou des solides analogues Download PDF

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Publication number
EP0681672B1
EP0681672B1 EP94902701A EP94902701A EP0681672B1 EP 0681672 B1 EP0681672 B1 EP 0681672B1 EP 94902701 A EP94902701 A EP 94902701A EP 94902701 A EP94902701 A EP 94902701A EP 0681672 B1 EP0681672 B1 EP 0681672B1
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EP
European Patent Office
Prior art keywords
piston
conveyor
cylinder
feed
cutting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94902701A
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German (de)
English (en)
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EP0681672A1 (fr
EP0681672B2 (fr
Inventor
Karl Schlecht
Ulrich Schuster
Wolfgang Zey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister Werk Maschinenfabrik GmbH
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Application filed by Putzmeister Werk Maschinenfabrik GmbH filed Critical Putzmeister Werk Maschinenfabrik GmbH
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Publication of EP0681672B1 publication Critical patent/EP0681672B1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • F04B9/1035—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber the movement of the pump piston in the two directions being obtained by two single-acting liquid motors each acting in one direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F04B15/023—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/164—Stoffing boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0266—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated the inlet and discharge means being separate members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/442—Waste feed arrangements
    • F23G5/444—Waste feed arrangements for solid waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/20—Rotary drum furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2205/00—Waste feed arrangements
    • F23G2205/10—Waste feed arrangements using ram or pusher
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306664—Milling including means to infeed rotary cutter toward work
    • Y10T409/306776—Axially
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0419—By distorting within elastic limit
    • Y10T83/0429—By compressing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0448—With subsequent handling [i.e., of product]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/141—With means to monitor and control operation [e.g., self-regulating means]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/263—With means to apply transient nonpropellant fluent material to tool or work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4812—Compound movement of tool during tool cycle
    • Y10T83/4815—Axial reciprocation of tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/538—Positioning of tool controlled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/727—With means to guide moving work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8858—Fluid pressure actuated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool
    • Y10T83/9428—Shear-type male tool

Definitions

  • the invention relates to a method for conveying pre-comminuted metal scrap or similar solid materials containing solid materials.
  • the invention further relates to a device for conveying pre-comminuted metal scrap or similar solid materials containing solid materials.
  • US Pat. No. 3,559,823 discloses a method and a device with the features of the preamble of claims 1 and 8, respectively.
  • the delivery piston is rigidly connected there to the rod of a double-acting hydraulic cylinder.
  • CH-A-513 378 for a loading device of a waste incineration plant to provide a trough connected to the combustion chamber, the furnace-side end of which has a feed opening provided on its periphery with a cutting edge and in which a push-in slide is arranged displaceably is provided on the furnace side with a cutting edge which interacts with the cutting edge arranged on the circumference of the feed opening.
  • the object of the invention is to develop a method and a device of the type mentioned at the outset which enable substantially continuous conveyance of pre-comminuted metal scrap or similar solid materials containing solid matter.
  • This object is achieved according to the invention by a method in which the thick matter containing the pre-comminuted metal scrap is pressed into a feed cylinder by a plunger-like feed piston from a feed container which is tightly underneath the bottom of the feed piston and which is limited on the inlet side during each feed stroke and thereby sealed over a feed cylinder a container-side inlet opening of the feed cylinder from the feed container into the feed cylinder projecting parts of the shot are sheared off by the feed piston entering the feed cylinder with its front end, the feed force of the feed piston being increased when a predetermined pressure in a medium driving the feed piston is exceeded.
  • the invention is based on the idea of conveying the thick matter containing the pre-shredded container scrap with a piston pump, since piston pumps have proven to be excellent in conveying thick matter with different liquid contents, and in the course of the conveyance only crushing the container scrap that is in the uncrushed form would hinder funding.
  • the increase in the feed force and thus the shear force permits the shearing off of larger or thicker solids which protrude from the feed cylinder into the feed container.
  • a further advantageous embodiment of the invention provides that the delivery piston is retracted when a predetermined pressure in the pressure oil circuit is exceeded and then pushed forward again. Due to the suction effect when the delivery piston is pulled back, the piston path is blocked by blocking solids, so that they are completely in the delivery line or in the feed container during the subsequent pressure stroke of the delivery piston or penetrate the inlet opening of the delivery cylinder with a smaller shear cross section. If this measure does not immediately shear off the solids, this process can be repeated automatically several times before the pump is stopped.
  • a preferred embodiment of the invention provides that the protruding parts between at least one edge at least partially surrounding the inlet opening of the feed cylinder and at least one at the inlet of the feed piston are sheared off in the feed cylinder at a short distance past the edge and arranged at the front end of the feed piston.
  • the translational movement of the feed piston is superimposed on its feed movement by a rotary movement about the feed piston axis in order to improve the cutting action between the stationary edge and the cutting edge at the front end of the feed piston.
  • the rotary movement of the delivery piston can, for example, take place hydraulically via a rotary piston of a drive cylinder.
  • Another advantageous embodiment of the invention provides that a return of the thick matter in the feed cylinder is prevented during a suction stroke of the feed piston by closing a slide arranged in the feed cylinder, which is opened synchronously with the movement of the feed piston whenever the feed piston is fully retracted , and is closed when the delivery piston is fully extended.
  • the object underlying the invention is achieved in that the delivery piston is designed as a plunger cylinder, and that the plunger cylinder is hydraulically displaceable relative to a piston of a stationary piston rod engaging in the plunger cylinder, with a delivery side between the piston during a pressure stroke and pressure chamber arranged in the plunger cylinder can be acted upon with pressure oil together with a pressure chamber arranged on the rod side between the piston and the plunger cylinder, and if a predetermined pressure in the pressure spaces is exceeded while closing a connection between the pressure spaces, the rod-side pressure space can be switched without pressure.
  • the pressure chamber on the delivery side has a cross-section twice as large as the pressure chamber on the rod side, with a constant drive power of a drive pump acting on the plunger cylinder with pressure oil, the feed force and thus the shear force at the front end of the delivery piston can be doubled by halving the feed speed.
  • the cutting means are formed by at least one edge that at least partially surrounds the inlet opening of the feed cylinder and at least one cutting edge that is guided past the edge at a small distance when the feed piston enters the feed cylinder and is arranged at the front end of the feed piston, the edge and the cutting edge preferably consist of hard metal or hardened steel. While the edge is expediently formed on a cutting ring made of hardened steel or hard metal on the container-side end of the feed cylinder, the cutting edge is preferably arranged on a cutting crown which can be detachably attached to the front end of the feed piston between an end face facing the feed cylinder and a peripheral surface of the feed piston.
  • the circumferential cutting edge can be zigzag or wave-shaped in the conveying direction and / or in the radial direction, so that the solid protruding from the feed container into the conveying cylinder is not blunt-cutting but sheared, which enables the solids to be broken up more easily.
  • the edge of the inlet opening can also be zigzag or wavy.
  • the zigzag design of the cutting edge is thereby according to a further advantageous embodiment of the invention achieved that it is formed by a ring-shaped arranged next to each other, protruding forward over the cutting crown, which are expediently formed in one piece with the cutting crown.
  • the cutting crown arranged at the front end of the delivery piston expediently has a conical chamfer in the area of the cutting edge.
  • the delivery plunger has at least one annular groove in the area of its front end face on its circumferential surface, by means of which the sealing of the annular gap measuring several tenths of a millimeter between the delivery plunger and the delivery cylinder is improved.
  • the annular groove usually replaces elastic seals arranged at this point, which would be easily damaged by the metal parts being conveyed and would therefore be unusable.
  • annular groove or the annular grooves during the pressure stroke cannot prevent the entry of smaller metal parts into the annular gap between the delivery piston and delivery cylinder
  • an inner wall surface of a section of the delivery cylinder adjoining the feed container and an outer circumferential surface opposite the inner wall surface when the delivery piston is extended are expedient Delivery piston hardened.
  • a hardening distortion occurring during the hardening of the feed cylinder section and the feed piston can be compensated for by the part of the feed cylinder and the feed piston being turned so convexly during manufacture that the warping leads to an incidence on exact cylinder surfaces.
  • the lower part of the feed container in contrast to known piston pumps, in which the feed container In its lower part, it was always deeper and wider than the cross-section of the delivery piston in order to prevent wear of elastic seals arranged at the front end of the delivery piston, the lower part of the feed container according to a further preferred embodiment of the invention has an essentially the cross-section of a preferably semi-circular delivery piston segment corresponding cross section.
  • This measure makes it possible to prevent metal parts in the lower half of the delivery piston cross-section from protruding from the delivery line into the feed container, so that cutting means could be dispensed with in the area of the lower half of the delivery piston and the lower half of the inlet opening.
  • symmetrically designed cutting means can also be reinstalled rotated by 180 degrees after one-sided wear.
  • the cross section of the lower part of the feed container is preferably around a few tenths of a millimeter larger than the delivery piston diameter.
  • the bottom of the feed container can be designed as a releasably attachable lining made of wear plate.
  • a so-called bridge breaker is in the area of the feed container arranged, which presses the thick materials into the feed container, thus ensuring that material bridges in the feed container are destroyed and that the thick materials cannot escape upwards through a feed hopper of the feed container during the feed of the feed piston, but rather are pressed through the inlet opening into the feed cylinder.
  • a feed cylinder is arranged in the feed cylinder that releases the feed cylinder before a pressure stroke of the feed piston and closes the feed cylinder before a feed stroke of the feed piston Slider provided, which is synchronized with the delivery piston and is arranged directly behind the point at which the front end of the delivery piston is located when the delivery piston is fully extended.
  • the slide according to the invention has a slide blade which can be displaced in a guide and engages in the feed cylinder and in which at least the edge opposite the guide has a wedge-shaped in the feed direction Has cross section.
  • the wedge shape of the edge ensures that material that penetrates into the guide when the slide is withdrawn from the feed cylinder is easily pushed out again and does not get stuck in the narrow gap between the guide and the slide blade and thus leads to jamming of the slide blade .
  • the edge of the slide blade opposite the guide is expediently adapted in its contour to the inner cross section of the feed cylinder and, when the slide is closed, lies against a stop with a semicircular fit, the inner cross section of the feeder, which fits into the feed cylinder opposite the guide Delivery cylinder corresponding stop surface.
  • any solid bodies in the slide path are pressed by the slide blade against the stop surface of the stop.
  • the slide can then not be closed completely, but the clamped solid bodies also prevent the thick materials from flowing back from the feed cylinder into the feed container.
  • a feed chute opening into the feed container and a preferably hydraulically actuable stop member which can be inserted into the feed container in the direction of the feed container are provided.
  • the stop element is expediently slidable into the feed shaft, preferably into the feed container.
  • a preferably hydraulically operable bridge breaking member which can be inserted essentially transversely to the displacement path of the stop member into the feed shaft, is advantageously provided, which can be expediently inserted into the feed shaft transversely or obliquely in the direction of the feed container above the stop member.
  • the feed shaft has two flanges, which are arranged at an angle on the shaft casing, for fastening a tamping cylinder and a bridge breaker cylinder.
  • the delivery piston which is preferably in the form of a plunger cylinder, the stop member, the bridge-breaking member and the slide are appropriately controlled cyclically by a central control.
  • the device shown in the drawing is to be used in order to supply liquid, pulp-like and pasty special waste delivered in drums to a rotary kiln for incineration essentially continuously.
  • the part of the burnout consisting of rusty, fused sheet metal parts or other unburned iron scrap from the rotary kiln is to be fed to it again in order to reduce the residual waste amount after the combustion and to utilize the remaining calorific value of this part of the burnup.
  • the fused sheet metal parts separated from the erosion by magnetic separation are mixed with a liquid or pasty carrier material, preferably also liquid or pasty special waste, before the resulting solid / thick mixture with device according to the invention is fed into the rotary kiln.
  • the device shown essentially consists of a hydraulically driven single-piston pump 2, from the delivery piston 4 of which the solid / thick mixture is pressed from a feed container 6 via a delivery cylinder 8 into a delivery line leading to the rotary kiln (not shown).
  • a arranged behind the feed cylinder 8, clocked in accordance with the movement of the feed plunger 10 closes the feed line before pulling back the feed piston 4 and thus prevents the mixture from being fed back into the feed container 6 when the feed piston 4 is pulled back.
  • the feed piston 4 has a cutting crown 14 made of hardened steel at the front end 12 which, when entering the Delivery cylinder 8 for shearing off the protruding sheet metal parts or other solid body cooperates with a cutting ring 18 also made of hardened steel.
  • the cutting ring delimits an inlet opening 16 through which the solid / thick mixture is pressed out of the feed container 6 into the feed cylinder 8.
  • the cutting ring 18 has a plurality of lubrication bores 172 which are arranged distributed over the circumference and open into a radially inwardly open annular groove 170.
  • the lubrication holes are loaded with lubricating oil via a central lubrication system in the pump cycle at the moment the delivery piston 4 is immersed in the cutting ring 18. With these precautions, there is a considerable reduction in wear for the delivery cylinder 8 and the downstream delivery line (FIG. 6).
  • the conveying cylinder 8 has an annular channel 178 which can be acted upon by cooling water via the connections 180 in the direction of the arrows 182. Water cooling becomes necessary when the medium to be pumped is permeated with steam.
  • the cutting ring 18 has, on its end face 20 facing the feed container 6, an edge 22 surrounding the inlet opening 16, on which a cutting edge 24 of the cutting crown 14 is passed at a small distance when the feed piston 4 enters the feed cylinder 8. While the edge 22 of the cutting ring 18 is circular, the cutting edge 24 runs in a zigzag shape on a conical chamfer surface 28 which limits a cylindrical circumferential surface 26 of the cutting crown 14 to the front, the chamfer surface 28 introducing the delivery piston 4 not guided in the area of the feed container 6 into the Entry opening 16 should facilitate.
  • the zigzag-shaped cutting edge 24 delimits the end face via a central circular end face 30 of the cutting crown 14, which protrudes forwardly and is made in one piece with the cutting crown 14 30 surrounded by a ring.
  • the cutting bodies 32 have a triangular cross section in the tangential direction and are delimited to the front by roof surfaces 36, 38, 40 inclined toward one another and towards the piston axis 34, which cause the delivery piston 4 to enter the inlet opening 16 from the delivery cylinder 8 when the delivery piston 4 enters sheet metal parts protruding into the feed container 6 are displaced in the tangential and radial directions relative to the guide surfaces 36, 38, 40, thereby making their shearing easier.
  • the cutting crown 14 is detachably fastened with axial fastening screws 59 on a front end 41 of the delivery piston 4 facing the delivery cylinder 8.
  • the threaded bores for the fastening screws 59 are arranged at regular angular intervals, so that the cutting crown 14 can be removed if the cutting edge 24 wears on one side and can be fastened again after rotation by a corresponding angle about the piston axis 34.
  • the delivery piston 4 has two or more annular grooves 39 arranged one behind the other on its peripheral surface 37.
  • the annular grooves 39 have a rectangular cross section, the ratio between their depth and their width being approximately 1: 2.
  • the distance between the two ring grooves 39 corresponds essentially to their width.
  • the annular grooves 39 act as relief grooves and have the effect that the pressure drop in the gap 41 between the peripheral surface 37 of the delivery piston 4 and the inner surface of the delivery cylinder 8 increases compared to a delivery piston without annular grooves and thus the backflow of thick matter through the gap 41 during the feed movement of the delivery piston 4 is difficult.
  • the annular grooves 39 replace the elastic seals usually arranged at this point in piston pumps, which are not used in the piston pump according to the invention, since they would be quickly damaged or destroyed by the sharp sheet metal parts.
  • the peripheral surface 37 of the delivery piston 4 is hardened to prevent small metal particles entering the gap 41 from causing damage to the peripheral surface 37.
  • the feed container 6 has two mutually opposite parallel walls 40, 42 in the conveying direction of the conveying piston 4, each of which is provided with a circular passage opening 44, 46 for the conveying piston 4.
  • the annular cutting ring 18 is inserted against an annular flange 48 at the container-side end of a first section 50 of the feed cylinder 8 such that it is rotated by a corresponding amount in the event of one-sided wear can.
  • a guide cylinder 52 of the single-piston pump 2 is connected to the passage opening 46 in the opposite wall 42 of the feed container 6, in which the delivery piston 4 is guided.
  • the feed container 6 is delimited by a trough 56 lined with wear plates 54, the lower part of which has a semicircular cross section.
  • the diameter of the semicircular part of the tub cross section is only a few tenths of a mm larger than the diameter of the delivery piston 4, so that it is ensured that on the one hand the delivery piston 4 does not rub against the tub 56, but on the other hand no sheet metal parts during the advance of the delivery piston 4 or other solids get into the gap between delivery piston 4 and tray 56.
  • the feed container 6 is provided with a horizontal screw flange 60, on which a hopper or feed shaft 200 can be placed.
  • the feed shaft is provided with two obliquely aligned jacket flanges 202, 204 which are equipped with a hydraulic stuffer cylinder 206 and a hydraulic bridge breaker cylinder 208.
  • the tamping cylinder 206 has a piston rod 210 designed as a stopping device, which can be displaced obliquely in the direction of the feed container 6 into the feed shaft 200.
  • the bridge breaker cylinder 208 has a piston rod 212 which is displaceable transversely to the direction of displacement of the stop element 210 and is designed as a bridge breaker and which passes through the feed shaft 200 transversely when shifted.
  • the feed shaft 200 is provided with a horizontal screw flange 214, to which a feed channel (not shown) can be flanged.
  • the delivery piston 4 which is designed as a plunger cylinder
  • the stop member 210 is also displaced in the direction of the feed container 6, taking the mixture in front of it, so that compression and thus a good degree of filling result.
  • the stop member 210 is moved back into its end position so that new material can be conveyed from above.
  • the bridge breaker 212 is actuated in order to sever material bridges which may occur in the feed shaft 200.
  • the delivery piston 4, the slide 10, the stuffing cylinder 206 and the bridge breaker cylinder 208 are controlled via a central control according to a defined cycle (Figs. 10 to 12).
  • the first section 50 of the feed cylinder 8, which adjoins the feed container 6 and extends to the slide 10, has a cylindrical tube wall 43 made of hardened steel in order to prevent damage to the inner wall surface by metal particles penetrating into the gap 41 between it and the feed piston 4 prevent.
  • a hardening distortion occurring during hardening of the cylindrical tube wall 43 can be compensated for in that the tube wall 43 is convexly pre-turned before hardening, so that the hardening distortion leads to the formation of an exactly cylindrical inner wall surface.
  • the guide cylinder 52 adjoining the wall 42 of the feed container has on its inner circumferential surface 49 in the area of the passage opening in the wall 42 a wiper 51 and immediately behind the wiper 51 a plurality of sealing rings 53 and guide belts 55 arranged one behind the other in the conveying direction. While the wiper 51 and the sealing rings 53 prevent the entry of thick materials between the delivery piston 4 and the guide cylinder 52, the guide belts 55 serve to guide the delivery piston 4 in the guide cylinder 52.
  • the gap between the guide cylinder 52 and the delivery piston 4 is via the lubrication holes 174 in the direction of arrows 176 through a central lubrication system with lubricating oil.
  • the delivery piston 4 is designed as a plunger cylinder 57, which is displaceable relative to a piston 58 of a piston rod 60 arranged stationary in the guide cylinder 52.
  • the piston rod 61 has two pressure oil channels 66, 68, each of which can alternatively be connected to a pressure oil supply line 62, 64 leading to a drive pump 80 or to a return flow line 78, 79 leading to a return flow tank 76 ', and one of which flows into a delivery side the piston 59 and the plunger cylinder 57 arranged pressure chamber 70 and the other opens into a pressure chamber 72 arranged on the rod side between the piston 59 and the plunger cylinder 57.
  • the effective piston area in the pressure chamber 70 on the delivery side is twice as large as the effective piston area in the pressure chamber 72 on the rod side, since the cross section of the piston rod 61 is half the size of the cross section of the pressure chamber 70 on the delivery side.
  • the two pressure chambers 70, 72 are connected by a closable connecting line (not shown) connected to each other, which is opened when the two pressure chambers 70, 72 are pressurized with pressure oil (differential control), so that pressure equalization is established and pressure oil can be conveyed from the rod-side pressure chamber 72 to the delivery-side pressure chamber 70.
  • the pressure in the pressure oil channel 68 is monitored by two pressure transducers 76, 77, which act upon a control unit 82 with a control signal each time a predetermined pressure is exceeded during the advancing movement of the plunger cylinder 57.
  • both pressure chambers 70, 72 are actuated with differential control open in the compensation line and pressurized via the pressure oil supply lines 62, 64 and the pressure oil channels 66, 68 connected to them. Since only the rod surface is available as the active surface, the plunger cylinder 57 is advanced with a relatively low feed force, but with a relatively high feed speed.
  • the pressure in the pressure oil circuit continues to increase until it exceeds the predetermined value at the second pressure sensor 77 and a signal is sent to the control unit 82 by the latter becomes.
  • the control unit 82 then connects the pressure oil channel 68 to the return flow line 79 and the pressure oil channel 66 to the pressure oil supply line 62, so that now only the rod-side pressure chamber 72 is pressurized and the plunger cylinder 57 is withdrawn.
  • the suction in the feed container 6 causes the thick matter to collapse, the metal strip blocking the feed movement of the feed plunger 4 also mostly being displaced.
  • the plunger cylinder 57 is pushed again, the pulling back and the pushing forward being able to be repeated several times before the piston pump is stopped for manual removal of the sheet metal strip.
  • the slide 10 arranged in the delivery line 8 essentially consists of a slide blade 94, which is guided in a slide flange 92 so as to be vertically displaceable, which completely releases the delivery line 8 when the slide 10 is open and closes it completely when the slide 10 is closed.
  • the spade-shaped slide blade 94 is displaceable by means of two hydraulic cylinders 96, 98, each with its piston rod 100 on the slide blade 94 and with its cylinder 102 on the slide flange 92 built into the delivery line 8 attack.
  • the part of the slide blade 94 which engages in the delivery line 8 is delimited at the bottom by a semicircular edge 104 which is adapted to the inner cross section of the delivery line 8 and which, when the slide 10 is closed, has a semi-cylindrical stop surface 106 on a likewise semi-cylindrical stop surface 108 of a between two parallel flange plates 110, 112 of the slide flange 92 inserted stop plate 114 abuts.
  • the slide blade 94 is guided in a guide shaft 116 arranged between the flange plates 110, 112 with a guide slot 118 which is rectangular in cross section, the opposite broad side surfaces 122 of which lie opposite the wide side surfaces 124 of the slide blade 94, each leaving a narrow gap 120.
  • the edge 104 of the slide blade 94 has a cross section which tapers in a wedge shape towards the stop surface 106, which ensures that metal particles which get into the narrow gap 120 between the slide blade 94 and the guide shaft 116 when the slide blade 94 is pulled out of the delivery line 8, when the slide blade 94 is subsequently pushed into the delivery line 8, it is pushed back out of the gap 120 toward the delivery line 8 and does not get stuck between the slide blade 94 and the guide shaft 116.
  • the guide shaft 116 is formed in two parts, the lower part 126 being supported against a ring 128 delimiting the flange plates 110, 112 towards the inside of the conveying line 8, and the upper part 130 being supported by adjusting screws 132 engaging in threaded holes in the flange plates 110, 112 the top of the lower part 126 resting seal set 134 is pulled.
  • the sealing set 134 is made of elastic seals 136, 138 which run around the slide blade 94 thereby pressed together, the seals 136, 138 bearing against the slide blade 94.
  • the two sections of the delivery line 8 in front of and behind the slide 10 are each held by fastening screws 140 which engage in threaded holes in the flange plates 110, 112 on the flange plates 110, 112 and are themselves connected to one another by connecting screws 142.
  • the slide blade 94 is also formed in two parts, the lower part, which engages in the guide slot 118 of the guide shaft 116, being connected by retaining screws 144 to the upper part, which projects beyond the flange plates 110, 112 transversely to the conveying direction and has cylindrical receptacles 146 pointing downward , in which cylindrical pins 148, each protruding on the end face via the piston rods 100 of the hydraulic cylinders 96, 98, are fastened with retaining bolts 150.
  • the hydraulic cylinders 96, 98 are pivotably mounted on pivot bolts 152, which are inserted in brackets 154 which project laterally beyond the flange plates 110, 112.
  • a closed sheet metal housing 156 is placed on the flange plates 110, 112, in which the slide blade 94 moves upwards, protected against external influences, when it is pulled out.
  • two proximity switches 160, 162 are inserted, each of which responds in the upper and lower end positions of the slide blade 94 when a flange 164 projecting over the slide blade 94 in the conveying direction approaches.
  • the signal supplied by the limit switches of the control unit 82 serves to supply the pressure oil to the hydraulic cylinders each time the upper or lower end position of the slide blade 94 is reached 96, 98 to close and then initiate the feed movement or the retraction of the delivery piston 4, which is synchronized with the slide 10.
  • the slide 10 is arranged in the conveying direction immediately behind the point in the delivery line 8 at which the front end 12 of the delivery piston 4 is located when the delivery piston 4 is fully extended. It is thereby achieved that when the delivery piston 4 is pulled back on the container side of the slide 10 there is no longer any thick material in the delivery cylinder 8 which is sucked back to the feed container 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Screw Conveyors (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (40)

  1. Procédé permettant d'acheminer des matières consistantes contenant des déchets métalliques broyés ou des solides analogues, selon lequel les matières consistantes sont poussées par un piston d'alimentation (4) de type piston plongeur, à partir d'un conteneur alimenteur (6) dont le fond passe immédiatement sous le piston d'alimentation (4) et qui est limité ou fermé du côté entrée pendant chaque course de refoulement, dans un cylindre transporteur (8), et selon lequel des solides dépassant d'une ouverture d'entrée (16) du cylindre transporteur (8) située du côté conteneur, sont cisaillés par le piston d'alimentation (4) dont au moins l'extrémité frontale antérieure pénètre dans le cylindre transporteur (8), caractérisé en ce que la force d'avancement du piston d'alimentation (4) est augmentée dès qu'une pression prédéterminée d'un fluide poussant le piston d'alimentation (4) est dépassée.
  2. Procédé selon la revendication 1, caractérisé en ce que, dans une première étape, les solides sont mélangés avec une matière consistante ou avec un milieu liquide.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le piston d'alimentation (4) est tiré en arrière dès qu'une pression prédéterminée dans un fluide poussant le piston d'alimentation (4) est dépassée, puis avancé à nouveau.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les solides sont cisaillés entre au moins un bord périphérique entourant l'ouverture d'entrée (16) et au moins une arête coupante (24) disposée à l'extrémité frontale du piston d'alimentation (4) et passant, lors de l'entrée du piston d'alimentation (4) dans le cylindre transporteur (8), à faible distance du bord périphérique.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce qu'au mouvement de translation du piston d'alimentation (4) est superposé un mouvement de rotation.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'un tiroir (10) placé dans le cylindre transporteur (8) est fermé avant une course d'aspiration du piston d'alimentation (4).
  7. Procédé selon la revendication 6, caractérisé en ce que lors de la fermeture du tiroir (10), des solides situés dans la trajectoire d'une lame de tiroir (94) s'engageant dans le cylindre transporteur (8) sont coincés entre la lame de tiroir et une paroi du cylindre transporteur.
  8. Dispositif pour l'acheminement de matières consistantes, en particulier pour l'acheminement de matières consistantes contenant des déchets métalliques broyés ou des solides analogues, comprenant une pompe à piston (2) équipée d'un piston d'alimentation (4) de type piston plongeur par lequel les matières consistantes sont poussées d'un conteneur alimenteur (6) dans un cylindre transporteur (8), le piston d'alimentation (4) présentant à son extrémité frontale antérieure (12), pénétrant dans le cylindre transporteur (8), des moyens de coupe (14, 24) qui coopèrent avec des moyens de coupe (18, 22) dans la région d'une ouverture d'entrée (16) du cylindre transporteur (8) située du côté conteneur, et une partie inférieure du conteneur alimenteur (6) présentant une section transversale qui correspond sensiblement à la section transversale d'un segment de piston d'alimentation, caractérisé en ce que le piston d'alimentation (4) est conformé en cylindre plongeur (57) et que le cylindre plongeur (57) peut être déplacé hydrauliquement par rapport à un piston (58) d'une tige de piston (60) stationnaire qui pénètre dans le cylindre plongeur (57), une chambre de compression (70) disposée du côté refoulement entre le piston (58) et le cylindre plongeur (57) pouvant être alimentée en huile sous pression, pendant une course de compression, conjointement avec une chambre de compression (72) disposée du côté tige entre le piston (58) et le cylindre plongeur (57), et la pression dans la chambre de compression (72) située du côté tige pouvant être supprimée, avec fermeture d'une communication entre les chambres de compression (70, 72), dès qu'une pression prédéterminée est dépassée dans les chambres de compression (70, 72).
  9. Dispositif selon la revendication 8, caractérisé en ce que les moyens de coupe (18, 22) sont constitués par au moins un bord périphérique (22) qui entoure au moins partiellement l'ouverture d'entrée (16) du cylindre transporteur (8) et par au moins une arête coupante (24) disposée à l'extrémité frontale (12) du piston d'alimentation (4) et passant, lors de l'entrée du piston d'alimentation (4) dans le cylindre transporteur (8), à faible distance devant le bord périphérique (22).
  10. Dispositif selon la revendication 9, caractérisé en ce que le bord périphérique (22) et l'arête coupante (24) sont réalisés en métal dur ou en acier trempé.
  11. Dispositif selon la revendication 9 ou 10, caractérisé en ce que le bord périphérique (22) est conformé sur une bague coupante (18) en acier trempé ou en métal dur disposée à l'extrémité du cylindre transporteur (8) située du côté conteneur.
  12. Dispositif selon l'une des revendications 9 à 11, caractérisé en ce que l'arête coupante (24) est disposée sur une couronne de coupe (14) fixée de manière amovible sur l'extrémité frontale antérieure (12) du piston d'alimentation (4).
  13. Dispositif selon l'une des revendications 9 à 12, caractérisé en ce que l'arête coupante (24) est disposée entre au moins une surface frontale (30) tournée vers le cylindre transporteur (8) et au moins une surface circonférentielle (26) du piston d'alimentation (4).
  14. Dispositif selon l'une des revendications 9 à 13, caractérisé en ce que l'arête coupante (24) présente une forme en zigzag ou une forme ondulée.
  15. Dispositif selon l'une des revendications 9 à 14, caractérisé en ce que l'arête coupante (24) délimite vers l'avant un chanfrein conique (28) à l'extrémité antérieure de la couronne de coupe (14).
  16. Dispositif selon la revendication 15, caractérisé en ce que l'arête coupante (24) est constituée par des corps de coupe (32) qui dépassent vers l'avant d'un corps de couronne de coupe (15).
  17. Dispositif selon la revendication 16, caractérisé en ce que les corps de coupe (32) sont réalisés d'un seul tenant avec le corps de couronne de coupe (15).
  18. Dispositif selon la revendication 16 ou 17, caractérisé en ce que les corps de coupe (32) sont disposés en couronne les uns à côté des autres et présentent dans la direction tangentielle une section transversale de forme triangulaire.
  19. Dispositif selon l'une des revendications 16 à 18, caractérisé en ce que les corps de coupe (32) sont délimités par des surfaces de guidage (36, 38, 40) inclinées les unes vers les autres.
  20. Dispositif selon l'une des revendications 15 à 19, caractérisé en ce que le diamètre extérieur de la couronne de coupe (14) correspond au diamètre extérieur du piston d'alimentation (4).
  21. Dispositif selon l'une des revendications 8 à 20, caractérisé en ce qu'une section (50) du cylindre transporteur (8) raccordée au conteneur alimenteur (6) est réalisée en acier trempé.
  22. Dispositif selon la revendication 21, caractérisé en ce que la section (50) s'étend au moins jusqu'à l'endroit auquel se trouve l'extrémité frontale antérieure (12) du piston d'alimentation (4) lorsque celui-ci est entièrement sorti.
  23. Dispositif selon l'une des revendications 10 à 22, caractérisé en ce que le piston d'alimentation (4) comporte une surface circonférentielle (37) trempée.
  24. Dispositif selon l'une des revendications 10 à 23, caractérisé en ce que la partie inférieure du conteneur alimenteur (6) présente une section transversale semi-circulaire d'un diamètre légèrement supérieur au diamètre du piston d'alimentation.
  25. Dispositif selon l'une des revendications 10 à 24, caractérisé en ce que le conteneur alimenteur (6) est muni au moins dans sa partie inférieure d'un revêtement (54) fixé de manière amovible.
  26. Dispositif selon l'une des revendications 10 à 25, caractérisé en ce que le piston d'alimentation (4) présente sur sa surface circonférentielle, dans la région de son extrémité frontale antérieure (12), au moins une rainure annulaire de décharge.
  27. Dispositif selon l'une des revendications 10 à 26, caractérisé en ce que le piston d'alimentation (4) peut être tourné, au cours d'un mouvement d'avancement, autour de son axe (34).
  28. Dispositif selon l'une des revendications 8 à 27, caractérisé en ce qu'il comprend dans la région du conteneur alimenteur (6) un dispositif pour injecter des matières consistantes dans le conteneur alimenteur (6) et/ou pour retenir les matières consistantes dans le conteneur alimenteur (6) pendant une course de compression du piston d'alimentation (4).
  29. Dispositif selon l'une des revendications 8 à 28, caractérisé en ce qu'il comprend un tiroir (10) disposé dans le cylindre transporteur (8), qui libère le cylindre transporteur (8) avant une course de compression du piston d'alimentation (4) et ferme le cylindre transporteur (8) avant une course d'aspiration du piston d'alimentation (4).
  30. Dispositif selon la revendication 29, caractérisé en ce que le tiroir (10) comprend une lame de tiroir (94) déplaçable dans un guidage (116, 118) et s'engageant dans la conduite de refoulement (8), dont au moins le bord (104) opposé au guidage (116, 118) présente dans la direction de refoulement une section transversale en forme de clavette.
  31. Dispositif selon la revendication 30, caractérisé en ce que la forme du bord (104) opposé au guidage (116, 118) est adaptée à la section transversale intérieure du cylindre transporteur (8).
  32. Dispositif selon la revendication 30 ou 31, caractérisé en ce que le guidage (116, 118) comporte au moins un joint d'étanchéité (136, 138) appliqué contre la lame de tiroir (94).
  33. Dispositif selon l'une des revendications 29 à 32, caractérisé en ce que, dans la direction de refoulement, le tiroir (10) est disposé à faible distance en aval de l'endroit auquel se trouve l'extrémité frontale antérieure (12) du piston d'alimentation (4) lorsque celui-ci est entièrement sorti.
  34. Dispositif selon l'une des revendications 8 à 33, caractérisé en ce que le cylindre transporteur (8) comporte un canal annulaire (178) pouvant être alimenté en eau de refroidissement.
  35. Dispositif selon l'une des revendications 11 à 34, caractérisé en ce que la bague coupante (18) comporte des alésages de graissage (172) répartis sur la périphérie et ouverts vers l'intérieur, qui débouchent de préférence dans un canal annulaire (170) ouvert radialement vers l'intérieur et peuvent être alimentés en huile de graissage, lors du cycle de pompage, par l'intermédiaire d'une installation de graissage centralisé.
  36. Dispositif selon l'une des revendications 8 à 35, caractérisé en ce qu'il comprend un puits d'amenée (200) débouchant dans le conteneur alimenteur (6), et un organe de bourrage (210), de préférence à commande hydraulique, qui peut être introduit dans le puits d'amenée (200), en direction du conteneur alimenteur (6).
  37. Dispositif selon la revendication 36, caractérisé en ce que l'organe de bourrage (210) peut être déplacé en oblique dans le puits d'amenée (200), de préférence jusqu'au côté entrée du conteneur alimenteur (6).
  38. Dispositif selon la revendication 36 ou 37, caractérisé en ce qu'il comprend un organe broyeur de ponts (212), de préférence à commande hydraulique, qui peut être introduit, sensiblement transversalement à la trajectoire de l'organe de bourrage (210), dans le puits d'amenée (200).
  39. Dispositif selon la revendication 38, caractérisé en ce que l'organe broyeur de ponts (212) peut être introduit transversalement ou en oblique dans le puits d'amenée (200), au-dessus de l'organe de bourrage (210), en direction du conteneur alimenteur (6).
  40. Dispositif selon l'une des revendications 36 à 39, caractérisé en ce que le piston d'alimentation (4), l'organe de bourrage (210), l'organe broyeur de ponts (212) et le tiroir (10) peuvent être commandés cycliquement par l'intermédiaire d'une commande centrale.
EP94902701A 1993-02-02 1993-12-07 Procede permettant d'acheminer des matieres consistantes contenant des dechets metalliques prebroyes ou des solides analogues Expired - Lifetime EP0681672B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4302799 1993-02-02
DE4302799 1993-02-02
PCT/EP1993/003438 WO1994018501A1 (fr) 1993-02-02 1993-12-07 Procede permettant d'acheminer des matieres consistantes contenant des dechets metalliques prebroyes ou des solides analogues

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EP0681672A1 EP0681672A1 (fr) 1995-11-15
EP0681672B1 true EP0681672B1 (fr) 1997-03-19
EP0681672B2 EP0681672B2 (fr) 2000-09-20

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US (2) US5988028A (fr)
EP (1) EP0681672B2 (fr)
JP (1) JP3462876B2 (fr)
AT (1) ATE150536T1 (fr)
CA (1) CA2154875A1 (fr)
DE (2) DE59305912D1 (fr)
WO (1) WO1994018501A1 (fr)

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DE10131904A1 (de) * 2001-07-04 2003-01-16 Putzmeister Ag Vorrichtung zum Fördern von fließ- oder schüttfähigem Fördergut
DE10131784A1 (de) * 2001-07-04 2003-01-16 Putzmeister Ag Vorrichtung zum Fördern von fließ- und schüttfähigem Fördergut
WO2003004875A1 (fr) 2001-07-04 2003-01-16 Putzmeister Aktiengesellschaft Dispositif pour transporter un produit a ecoulement libre et en vrac a transporter
DE102005040014A1 (de) * 2005-08-23 2007-03-01 Putzmeister Ag Vorrichtung zum Fördern von Dickstoffmaterial

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CA2154875A1 (fr) * 1993-02-02 1994-08-18 Karl Schlecht Methode de refoulement d'une substance epaisse contenant des metaux dechiquetes ou des materiaux solides du meme genre
DE19524048C2 (de) * 1995-07-01 1998-09-17 Hoppecke Zoellner Sohn Accu Pumpe zur Förderung nicht fließfähiger Medien
DE19643038B4 (de) * 1996-10-18 2007-09-13 Putzmeister Ag Vorrichtung und Verfahren zum Pumpen von Dickstoffgemischen
DE102006016083A1 (de) * 2006-04-04 2007-10-11 Putzmeister Ag Kolbenpumpe für Dickstoffe
ITTO20111029A1 (it) * 2011-11-08 2013-05-09 Soilmec Spa Pompa ad alta pressione per iniettare miscele cementizie
CN104848231B (zh) * 2015-05-12 2017-03-01 大连华锐重工集团股份有限公司 垃圾焚烧炉用进料口装置
DE102018132704A1 (de) 2018-12-18 2020-06-18 Schwing Gmbh Vorrichtung zur Förderung von Dickstoff
CN109796994B (zh) * 2019-03-04 2020-10-30 湖南人文科技学院 一种内转式生物质热解炉
DE102019117356A1 (de) * 2019-06-27 2020-12-31 Putzmeister Engineering Gmbh Dickstoffpumpe und Verfahren zum Fördern eines Dickstoffs
CN112664504B (zh) * 2020-12-28 2023-08-22 上海康恒环境股份有限公司 一种液压油路串并联自动切换方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131904A1 (de) * 2001-07-04 2003-01-16 Putzmeister Ag Vorrichtung zum Fördern von fließ- oder schüttfähigem Fördergut
DE10131784A1 (de) * 2001-07-04 2003-01-16 Putzmeister Ag Vorrichtung zum Fördern von fließ- und schüttfähigem Fördergut
WO2003004873A1 (fr) * 2001-07-04 2003-01-16 Putzmeister Aktiengesellschaft Dispositif permettant de transporter des matieres a transporter aptes a l'ecoulement
WO2003004875A1 (fr) 2001-07-04 2003-01-16 Putzmeister Aktiengesellschaft Dispositif pour transporter un produit a ecoulement libre et en vrac a transporter
DE10131903A1 (de) * 2001-07-04 2003-02-13 Putzmeister Ag Vorrichtung zum Fördern von fließ- und schüttfähigem Fördergut
DE102005040014A1 (de) * 2005-08-23 2007-03-01 Putzmeister Ag Vorrichtung zum Fördern von Dickstoffmaterial

Also Published As

Publication number Publication date
US6158313A (en) 2000-12-12
ATE150536T1 (de) 1997-04-15
EP0681672A1 (fr) 1995-11-15
CA2154875A1 (fr) 1994-08-18
EP0681672B2 (fr) 2000-09-20
DE59305912D1 (de) 1997-04-24
DE4341607A1 (de) 1994-08-04
US5988028A (en) 1999-11-23
WO1994018501A1 (fr) 1994-08-18
JP3462876B2 (ja) 2003-11-05
JPH08507841A (ja) 1996-08-20

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