EP3083102A1 - Dispositif de régénération - Google Patents

Dispositif de régénération

Info

Publication number
EP3083102A1
EP3083102A1 EP13807918.1A EP13807918A EP3083102A1 EP 3083102 A1 EP3083102 A1 EP 3083102A1 EP 13807918 A EP13807918 A EP 13807918A EP 3083102 A1 EP3083102 A1 EP 3083102A1
Authority
EP
European Patent Office
Prior art keywords
container
opening
regeneration device
bearing
shaft
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.)
Granted
Application number
EP13807918.1A
Other languages
German (de)
English (en)
Other versions
EP3083102B1 (fr
Inventor
Mark Thienel
Dietmar DOMNICK
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.)
Domnick Verfahrens- und Anlagentechnik
Technofond Giessereihilfsmittel GmbH
Original Assignee
Domnick Verfahrens- und Anlagentechnik
Technofond Giessereihilfsmittel GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Domnick Verfahrens- und Anlagentechnik, Technofond Giessereihilfsmittel GmbH filed Critical Domnick Verfahrens- und Anlagentechnik
Publication of EP3083102A1 publication Critical patent/EP3083102A1/fr
Application granted granted Critical
Publication of EP3083102B1 publication Critical patent/EP3083102B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
    • B22C5/044—Devices having a vertical stirrer shaft in a fixed receptacle

Definitions

  • the invention relates to a regeneration device according to the preamble of patent claim 1.
  • the object of the invention is to provide a device which further develops the prior art.
  • a mobile regeneration apparatus for processing foundry old sands, the mobile regeneration apparatus comprising a cylindrical container having a lid and a bottom and the container having a first opening and / or a second opening and a plurality of rotationally driven ones friction elements formed in the container are provided, and the friction elements are disposed on a first shaft, and a first bearing formed on the first shaft is provided, and the first shaft has a second bearing spaced from the first bearing, and the friction elements between the first bearing and the second bearing are arranged and the container at the top has a first flange and at the bottom a second flange, wherein the first flange is frictionally connected to the lid and the second flange non-positively connected to the ground and the container on a em support frame arranged and movable by means of the support frame.
  • foundry sand used in particular refers to that sand which forms the casting molds for a metal casting.
  • the main components of the used sand are, in particular, the aggregates such as organic or inorganic binders and substances for increasing the thermal conductivity. Due to the addition of the aggregates, the used sand can not be used again in the foundry without treatment and must be disposed of. In addition to the significant environmental impact for the transport of large quantities of sand, additional significant disposal costs.
  • the shaft is preferably brought to a certain speed by an electric motor during or after the filling of the container with waste sand.
  • the friction elements arranged on the shaft perform circular movements and transfer part of the mechanical energy into the sand to be regenerated.
  • the number of revolutions of the shaft and duration of the sand is less or more heated and held in the container in suspension.
  • the temperature of the sand in the regeneration is preferably in a range between 20 ° C and 350 ° C, and most preferably in a range between 50 ° C and 250 ° C. Furthermore, it is advantageous to determine the temperature of the sand and in another development to change the number of revolutions of the shaft as a function of the temperature and in particular to regulate. After a time interval, the sand is regenerated and can be removed. In order to facilitate handling it is to provide on the container a first opening for supplying the used sand and a second, spaced from the first opening second opening for removal of the regenerate.
  • An advantage of the formation of two openings is that, without rotation of the container, the old sand can easily be supplied to the container and the regenerated material can be removed from the container. It has also been shown that at least T EP2013 / 003548 double storage of the shaft can increase the stability of the regeneration device considerably.
  • the degree of regeneration is above 60%, preferably above 85%, and most preferably above 95%.
  • the degree of regeneration here is understood to mean the weight ratio of filled used sand to regenerated matter.
  • the cover is connected by means of a first screw connection to the first flange and the bottom to a second screw connection to the second flange.
  • the parts can be easily disassembled and perform a revision of the system quickly and inexpensively.
  • the friction elements arranged on the shaft and the shaft itself are subject to a closure and should be replaced from time to time.
  • the first bearing is flanged to the top of the lid, preferably secured by means of screw non-positively on the lid.
  • the first opening is designed as a filling device and / or as an exhaust air opening and the second opening as an outlet device and / or as a supply air opening.
  • Investigations have shown that the quality of the regenerated material can be increased if a part of the fine dust formed during the treatment is absorbed by the exhaust air 13 003548 apply.
  • it is advantageous to provide a third opening which is at a distance from the first opening and which is designed as an exhaust air device, and / or a fourth exhaust air opening which is at a distance from the second opening and which is designed as a supply air device.
  • a supply air opening is formed in addition to the exhaust air opening, it is possible to remove a great deal of the resulting particulate matter from the sand.
  • the bottom is formed as a Anströmkasten, wherein the Anströmkasten is delimited from the container by means of a nozzle plate.
  • the fourth opening d. H.
  • the first opening and the second opening are formed directly on the container and have a nozzle-shaped design on the outside of the container.
  • one or more temperature sensors are arranged on the container in order to determine the temperature of the sand.
  • hole-like formations for receiving the temperature sensors are provided in the container wall. It has been found that for a rapid and reliable determination of the sand temperature during the regeneration process, it is advantageous to guide the temperature sensors through the container wall and to attach them to the inside of the container.
  • the sensors are fastened to the container wall at different vertical positions. Studies have shown that the quality of the treated sand and the degree of regeneration depend, inter alia, on the duration of the regeneration and in particular on the continuous temperature-time profile in the regeneration, ie in the treatment.
  • the control unit can be connected to both with a shut-off device formed at the first opening and with a shut-off device formed at the second opening in order to enable automatic loading and unloading of the container. Automation can improve the quality of the regrind.
  • the second bearing forms a frictional connection with the ground. Furthermore, it is advantageous if the base has a first shape and the first shape receives the second bearing, so that the second bearing is arranged outside the housing outside. This increases the ease of maintenance of the system. It has been found that due to the high mechanical forces which are exposed to the bearings, it is advantageous if the first bearing and the second bearing each have a grease nipple to simply grease the bearings can.
  • a second shaft is provided with second friction strips.
  • this ensures uniform mixing and preparation.
  • this places high demands on the imbalance and the stability of the waves.
  • the friction elements on a middle and two adjoining the central region outer regions are preferably fully or almost completely inserted either in the first shaft or in the second shaft.
  • the middle region is preferably fully or almost completely inserted either in the first shaft or in the second shaft.
  • abrasion by the sand takes place at the outer regions.
  • a hard material layer is formed on the upper side and on the lower side in the outer regions.
  • the upper side is in this case the side of the friction element, which in the direction of the first flange and the underside of the friction element is the side which points in the direction of the second flange.
  • the outer regions of the friction element are completely or alternatively only that surface of the friction element, which has a component of the normal vector in the direction of rotation, coated with a hard material coating.
  • a hard material coating it is preferable to join the hard material supports firmly and firmly with the friction element.
  • Preferred materials for the hard material coatings are in particular hard metals such as so-called Widia coatings or nitrides. It goes without saying that the hardness of the coatings should always be greater than the hardness of the base material or the carrier material of the friction element. Studies have shown that the higher the hardness of the hard material support, the greater the service life of the friction elements. Furthermore, it is preferable to make the thickness of the hard material layer differently.
  • the hard material support is connected by means of a fastening means with the friction element and thereby the friction element is easily replaceable.
  • Preferred fastening means are in particular screws and nuts.
  • the regeneration device is designed as a mobile regeneration device. All parts of the regeneration device are arranged on a support frame, which receives the entire weight. As a result, the regeneration device can be easily transported by means of a truck.
  • the regeneration device has a tilting device.
  • the container can be tilted preferably up to 90 °.
  • this is advantageous in order to reduce the height of the structure and thus to increase the mobility of the entire system.
  • FIG. 1 shows a cross section of a first embodiment according to the invention
  • FIG. 2 shows a cross section of a second embodiment according to the invention
  • FIG. 3 shows a cross section of a third embodiment according to the invention
  • FIG. 4 shows a cross-section of a first development of the friction element
  • FIG. 5 shows a cross-section of a second development of the friction element
  • Figure 6 shows different views of a mobile embodiment of the Regerationsvorraum.
  • the Figure 1 shows a schematic cross section of a regeneration device 5 according to the invention, designed for the treatment of foundry old sands, with a cylindrical container 10 with a lid 12 and a bottom 14, a plurality of rotationally driven in the container 10 formed on a first shaft 30 arranged Friction elements 40 on.
  • the longitudinal axis of the first shaft 30 is substantially aligned, preferably exactly parallel to the longitudinal axis of the container 10.
  • a drive in the form of an electric motor 20 and a first bearing 22 are arranged on the upper side of the shaft 30.
  • On the underside of the shaft 30, which passes through the bottom 14 a spaced from the first bearing 22 second bearing 25 is arranged.
  • the second bearing 25 forms with the bottom 14 a frictional connection.
  • Both the first bearing 22 and the second bearing 25 each have a lubricating nipple 26.
  • the friction elements 40 are disposed between the first bearing 22 and the second bearing 25 within the container 10.
  • the container 10 has a first flange 42 and on the underside a second flange 44, wherein the first flange 42 frictionally with the cover 12 and the second flange 44 is frictionally connected to the bottom 14.
  • the container 10 has two receptacles 50 for temperature sensors.
  • the receptacles 50 each have recesses in the container wall, so that the temperature sensors measure the temperature within the container.
  • the container 10 has a first opening 60, which is designed as a filling device and a second opening 70, which is formed as an outlet device and a third opening 80, which is designed as an exhaust device or as an exhaust port on.
  • the first opening 60, the second opening 70 and the third opening 80 have on the outside of the container 10 a nozzle-shaped configuration.
  • Automatic shut-off devices 110 are provided both at the first opening 60 and at the second opening 70.
  • the cover 12 is connected in each case by means of a first screw 82 with the first flange 42 and the bottom 14 with a second screw 84 with the second flange 14 each frictionally engaged and each easily. Furthermore, the first bearing 22 is flanged to the cover 12. The first bearing 22 is covered with a sleeve. The sleeve is connected at the bottom with a third screw 86 with the cover 12 and at the top by means of a fourth screw 88 with the electric motor. In order to monitor the rotational speed of the shaft 30, a frequency converter 100 is provided. At the exhaust port, a suction device can be attached to create a slight negative pressure in the container 10 and to suck the resulting dust. By the first opening 60 and the second opening 70 are not made airtight, flows through both openings 60 and 70 to air.
  • FIG. 2 a second embodiment of the regeneration device 5 is shown. Only the differences from the embodiment of FIG. 1 will be explained below. For reasons of clarity, some details of the embodiment of FIG. 1 are not shown.
  • the bottom 14 is formed as a flow box, the onflow boxes with respect to the container 10 delimited by a nozzle plate 115 and the fourth opening 125 at the bottom of the bottom 14 as Zu Kunststoffö Samuel or Supply air device is formed on the Anströmkasten. Furthermore, the onflow boxes on a revision opening 127 for lubricating the second bearing 25.
  • the nozzle bottom 115 has a plurality of holes through which the supplied air flows. As a result, the sand is also held in suspension during regeneration.
  • FIG. 3 a third embodiment of the regeneration device 5 is shown. Only the differences from the embodiment of FIG. 1 or FIG. 2 will be explained below. For reasons of clarity, some details of the embodiment of FIG. 1 or FIG. 2 are not shown.
  • a second shaft 130 is provided with second friction strips 140.
  • the bottom 14 now has a first shape, wherein the first shape receives the second bearing 25, so that the second bearing 25 are arranged outside the housing outside. Furthermore, a deflecting strip is provided on the inside of the container 10 is not shown.
  • FIG. 4 shows a cross section of a first development of the friction element 40. Only the differences from the embodiments of the preceding figures will be explained below.
  • the friction element 40 has a central region 240 and two outer regions 250 adjoining the central region 240.
  • the central region is preferably fully inserted in either the first shaft 30 or the second shaft 130.
  • the mechanical energy is transferred from the two outer regions 250 to the sand. Accordingly, abrasion by the sand takes place at the outer regions 250.
  • a hard material layer 260 is formed on the upper side and on the lower side in the outer regions 250.
  • the upper side is in this case the side of the friction element 40, which in the direction of the first flange 42 and the underside of the friction element 40 is the side which points in the direction of the second flange 44.
  • the outer regions 250 of the friction element 40 are completely or only the surface of the friction lining formed in the direction of rotation.
  • ment 40 applied or coated with a hard material support.
  • the hard material supports 260 it is preferable for the hard material supports 260 to be bonded to the friction element 40 in a material-locking and rigid manner, ie not releasably.
  • Preferred materials for the hard material supports 260 are in particular hard metals such as so-called Widia coatings or nitrides. It goes without saying that the hardness of the coatings 260 should always be greater than the hardness of the base or support material of the friction element 40. Studies have shown that the higher the hardness of the hard material support 260, the greater the service life of the friction elements.
  • FIG. 5 shows a cross section of a first development of the friction element 40. Only the differences from the embodiments of the preceding figures will be explained below.
  • the friction element 40 has, on the side which points in the direction of rotation of the first shaft 30 or in the direction of rotation of the second shaft 130, on the entire two outer regions 250 hard material supports 260.
  • the hard material support 260 is connected to the friction element 40 by means of one or more fastening means 270.
  • Preferred fastening means 270 are in particular screws and nuts. Due to the fastening means 270, the hard material support 260 is easily exchangeable.
  • the friction elements 40 have a particularly long service life, in that the hard material support 260 can be replaced in the event of excessive wear or abrasion without the friction element 40 having to be removed from the respective shaft 30 or 130. This reduces maintenance and shortens the maintenance time. Studies have shown that it is advantageous to fix the hard material layer 260 to the outer region 250 at three points 280.
  • the hard material support 260 according to a first variant I can be formed as a rectangular strip 300.
  • the outer wheels of the strip 300 protrude from the circle radius of the friction element.
  • the hard material support 260 is formed as a strip-shaped circular segment and forms, with the exception of the fastening means 270 a positive engagement with the friction member 40 by the hard material overlay 260 with the outer surface on the same radius as the friction member 40 is located.
  • the hard material support 260 is formed as a strip-shaped segment and forms at the junction with the friction element 40 a positive connection. On the outside of a flat surface 305 is formed.
  • FIG. 6 In the illustration of Figure 6 different views of a mobile embodiment of the regeneration device 5 are shown. Only the differences from the embodiments of the preceding figures will be explained below.
  • a first illustration I is a plan view is shown.
  • the regeneration device 5 has a metering container 600 connected to the first opening 60. Further, a blower 610 is provided to introduce air into the container 10, preferably from the bottom of the container 10 by means of a nozzle bed, not shown, in the lower region. In the container 10 can thereby easily form a flow of air and to keep the sand during regeneration in limbo. The exhaust air or the dust escapes with the air flow preferably through the third opening 80.
  • a control and switching cabinet 620 is arranged at the side facing away from the first representation I side, that in this case behind the container 10.
  • all the electrical devices and sensors of the regeneration device 5 are arranged for controlling or reading.
  • All parts of the regeneration device 5 are arranged on a support frame 630, which receives the entire weight.
  • the regeneration device 5 can be implemented as a mobile regeneration device.
  • the regeneration device 5 can be easily transported by means of a truck.
  • the control and switching cabinet 620 is arranged at a distance from the container 10. This allows a transfer of vibrations from the container to the control and switching reduce cabinet 620. Furthermore, a tilting device 640 is formed. By means of the tilting device 640, the container 10 can be tilted preferably up to 90 °, most preferably between 5 ° and 90 °. In particular ⁇ special for transport on the truck, this is advantageous to reduce the height of the structure and thus to increase the mobility of the entire system.
  • the third illustration III a top view from above of the regeneration device 5 is shown.
  • the first opening 60 is arranged centrally in the dosing tank 600.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

L'invention concerne un dispositif de régénération, adapté pour retraiter du sable de fonderie usagé, qui comprend un récipient cylindrique pourvu d'un couvercle et d'un fond. Le récipient comporte un premier orifice et/ou un second orifice et une pluralité d'éléments de friction disposés dans le récipient et entraînés en rotation. Les éléments de friction sont disposés sur un premier arbre. Un premier palier est monté sur le premier arbre. Le premier arbre comporte un second palier placé à distance du premier palier. Les éléments de friction sont disposés entre le premier palier et le second palier. Le récipient comporte du côté supérieur une première bride et du côté inférieur une seconde bride. La première bride est reliée à force au couvercle et la seconde bride est reliée à force au fond.
EP13807918.1A 2013-11-25 2013-11-25 Dispositif de régénération et son utilisation Active EP3083102B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/003548 WO2015074676A1 (fr) 2013-11-25 2013-11-25 Dispositif de régénération

Publications (2)

Publication Number Publication Date
EP3083102A1 true EP3083102A1 (fr) 2016-10-26
EP3083102B1 EP3083102B1 (fr) 2018-11-14

Family

ID=49779835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13807918.1A Active EP3083102B1 (fr) 2013-11-25 2013-11-25 Dispositif de régénération et son utilisation

Country Status (2)

Country Link
EP (1) EP3083102B1 (fr)
WO (1) WO2015074676A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110788275B (zh) * 2019-10-29 2020-12-11 嘉兴市华染新能源有限公司 一种金属铸造用冷却设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050795A (en) * 1960-05-16 1962-08-28 Dietert Co Harry W Continuous type sand mixer
DE2113657A1 (de) * 1971-03-20 1972-09-28 Helmut Armonies Kontinuierlich arbeitender Kunststoff-Betonmischer mit Harzkomponenten-Mischer
EP0343272B1 (fr) 1988-05-26 1992-08-05 Pohl Giessereitechnik Procédé et dispositif pour la régénération de sable décoché de fonderie
US5005980A (en) * 1990-01-05 1991-04-09 Zimmerman Harold M Sludge/soil mixing machine
KR100402412B1 (ko) * 2001-10-25 2003-11-01 기원금속(주) 주물사 재생장치 및 그 재생방법
FR2858250B1 (fr) * 2003-07-30 2005-09-09 Syndicat Intercommunal Pour La Dispositif melangeur pour dechets solides divises
CN1537671A (zh) * 2003-10-24 2004-10-20 商丘市普天工贸有限公司煤化工研究所 生产铸造焦炭加热搅拌机
DE102008041104A1 (de) * 2008-08-07 2010-02-11 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mischvorrichtung mit Induktionsheizung
WO2010106009A1 (fr) * 2009-03-16 2010-09-23 Vit Environmentsystems Ag Dispositif de traitement thermique, notamment de thermolyse de mélanges d'huile usagée
PL2666562T3 (pl) * 2012-05-25 2014-12-31 Technofond Giessereihilfsmittel Gmbh Urządzenie regeneracyjne

Also Published As

Publication number Publication date
EP3083102B1 (fr) 2018-11-14
WO2015074676A1 (fr) 2015-05-28

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