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WO2017208151A1 - Système de décochage pour des pièces moulées de fonderie - Google Patents

Système de décochage pour des pièces moulées de fonderie Download PDF

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Publication number
WO2017208151A1
WO2017208151A1 PCT/IB2017/053176 IB2017053176W WO2017208151A1 WO 2017208151 A1 WO2017208151 A1 WO 2017208151A1 IB 2017053176 W IB2017053176 W IB 2017053176W WO 2017208151 A1 WO2017208151 A1 WO 2017208151A1
Authority
WO
WIPO (PCT)
Prior art keywords
hood
air
temperature
channel
burner device
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.)
Ceased
Application number
PCT/IB2017/053176
Other languages
English (en)
Inventor
Massimo ANSALONI
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.)
Fonderia Ghirlandina SpA
Original Assignee
Fonderia Ghirlandina SpA
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 Fonderia Ghirlandina SpA filed Critical Fonderia Ghirlandina SpA
Publication of WO2017208151A1 publication Critical patent/WO2017208151A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
    • B22C5/085—Cooling or drying the sand together with the castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002—Cleaning, working on castings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/12—Manure

Definitions

  • the present invention relates to a shakeout system for foundry castings.
  • the systems of known type are provided with primary furnaces, generally of the type of cupolas, blast furnaces or rotating furnaces, into which the basic materials (iron and carbon) are introduced and, in addition to these, one or more additive materials (copper, phosphorus, ferrosilicon, ferromolybdenum, ferromanganese, ferrochrome) which, by mixing with the basic materials, permit obtaining the cast iron required in terms of physical-chemical characteristics.
  • the basic materials iron and carbon
  • additive materials copper, phosphorus, ferrosilicon, ferromolybdenum, ferromanganese, ferrochrome
  • the systems also comprise a casting furnace in fluid- operated connection with the primary furnaces for the dispensing of a predefined quantity of liquid cast iron cast into a mold, generally made of sandy material, to obtain a foundry casting made of cast iron.
  • the molds made of sandy material are obtained by means of the compacting of particular sands and by making impressions on the compacted sandy material using tools suitable for obtaining the desired profile.
  • the molds comprise two half impressions, each corresponding to one half of the shape of the foundry casting to be made, associated with one another to define the actual casting mold.
  • a cooling phase follows of the molds and relative foundry castings and a phase of cleaning off the sandy material making up the molds themselves from the castings.
  • the systems of known type are provided with suitable shakeout means to perform the phases of cooling and cleaning off the sandy material from the foundry castings.
  • the shakeout means e.g., can comprise a shakeout drum member provided with an inlet opening, wherein the foundry castings and the molds made of sandy material are inserted for the cooling phase, and an outlet opening from which such foundry castings come out cleaned of the sandy material of the mold.
  • Each foundry casting and the relative mold in sandy material is mobile between the inlet opening and the outlet opening along a direction of forward movement.
  • Such shakeout means are provided with suction systems for extracting the air contained inside the drum member, which are adapted to define a flow of air which substantially flows in counter current with respect to the direction of forward movement so as to facilitate the cooling of the foundry castings and of the sandy material.
  • the shakeout means are provided with water dispensing means arranged at the inlet and outlet openings and are adapted to deliver quantities of water proportionate to the temperatures involved inside the shakeout means and to the flow rate of the material transiting inside it, so as to facilitate the reduction in the temperature of the foundry castings and of the sandy material.
  • the air contained inside the drum member therefore comprises the vapor generated by the evaporation of the residual relative humidity of the sand and of the water dispensed by the dispensing means.
  • the systems are provided with suction means, connected in a fluid- operated manner with the shakeout means, equipped with extraction hoods arranged at the inlet and outlet openings and adapted to extract the air contained inside the shakeout means.
  • the systems of known type are provided with suitable burner means operating at the inlet and outlet openings and adapted to heat the flow of air exiting from the extraction hoods to reduce the level of relative humidity in the air flow itself.
  • the exiting air flow flows through a filtering device such as to allow the filtering of the fine particles and the expulsion of the filtered air.
  • the burner means have an autonomous and independent management system with respect to the actual thermodynamic state of the air in the inlet and outlet areas of the drum member.
  • the burner means are set at a preset temperature value which is generally modified with the change of season, and therefore according to the temperature and relative humidity of the outside air.
  • the main drawback is tied to the fact that the phases of cooling and cleaning the foundry castings from the relative molds in sandy material are performed in a preset and independent way with respect to the hygrometric characteristics of the air contained inside the drum member and circulating in the extraction ducts of the suction means.
  • the manual regulation of the shakeout systems of known type is such as to make the shakeout operations of the sandy material from the foundry castings difficult in the cases in which the burner means operate at temperatures which are too low and the sandy material has a high percentage of relative humidity.
  • the main aim of the present invention is to provide a shakeout system for foundry castings which permits optimizing the foundry casting cooling and cleaning away of sandy material operations in an automatic way and according to the hygrometric characteristics of the air contained inside the drum member.
  • One object of the present invention is to provide a shakeout system for foundry castings which permits reducing the energy consumption tied to the operation of the shakeout means and of the suction means, with consequent adaptation with respect to the actual hygrometric conditions of the air contained in them.
  • Yet another object of the present invention is to provide a shakeout system for foundry castings which permits reducing any damage and breakdowns caused by incorrect and inadequate operating modes with respect to the actual hygrometric characteristics of the air circulating in them.
  • Another object of the present invention is to provide a shakeout system for foundry castings which allows to overcome the mentioned drawbacks of the prior art within the ambit of a simple, rational, easy, effective to use and low cost solution.
  • the objects outlined above are achieved by the present shakeout system for foundry castings, having the characteristics of claim 1.
  • FIG 1 is a schematic representation of the system according to the invention
  • Figures 2 and 3 are flow diagrams that explain the operation of the system according to the invention.
  • a shakeout system for foundry castings comprising separation means for the separation of foundry castings 2 from relative molds made of sandy material 3.
  • the system 1 is adapted to the shakeout of foundry castings 2 made of cast iron from the relative molds made of sandy material 3, wherein such sandy material 3 is suitably shaped to define the desired profile of the foundry casting 2 to be made, and inside which the liquid cast iron is cast.
  • the system 1 comprises a rotating drum member 4, having an inlet opening 5 for at least one of the foundry castings 2 to be shaken out and for the relevant molds made of sandy material 3, and an outlet opening 6 for the cooled and shaken out foundry casting 2 and for the sandy material 3.
  • the drum member 4 has a substantially cylindrical shape and is provided with at least one sifting septum adapted to separate the foundry castings 2 from the sandy material 3 of the relative molds.
  • the drum member 4 is of the rotating type and is arranged substantially inclined with respect to the ground so as to facilitate the forward movement, during the relative rotation, of the foundry castings 2 shaken out of the sandy material 3 along a direction of forward movement A.
  • the molds in sandy material 3 can be made using earths or other sandy material mixed with agglomerates such as to compact the sandy material 3.
  • the drum member 4 comprises dispensing means 7 of a liquid fluid, generally water, arranged at at least one of the inlet opening 5 and the outlet opening 6 and adapted to cool the foundry castings 2 and the sandy material 3.
  • the dispensing means 7 are arranged at both the inlet opening 5 and the outlet opening 6.
  • the dispensing means 7 are adapted to the dispensing of the water at an initial section of the drum member 4 close to the inlet opening 5 to obtain a first lowering of the temperature of the foundry castings 2 and of the molds in sandy material 3 entering through the inlet opening itself.
  • the dispensing means 7 are adapted to the dispensing of the water at a final section of the drum member 4 close to the outlet opening 6 to obtain a further lowering of the temperature of the foundry castings 2 and to manage the hygrometric characteristics of the sandy material 3 coming out of the outlet opening 6 and intended for reuse.
  • the dispensing means 7 are provided with command means that can be set by the operator to obtain the dispensing of a predefined quantity of water at the inlet opening 5 and the outlet opening 6.
  • the operator sets the command means according to the existing temperatures and quantity of foundry castings 2 and relative molds in sandy material 3 entering inside the inlet opening 5.
  • the system 1 comprises air suction means 8 having at least a hood 10, 11 arranged at at least one of the inlet opening 5 and the outlet opening 6.
  • the system 1 comprises at least a burner device 12, 13 which is connected in a fluid- operated manner to the hood 10, 11 and adapted to dispense a heating fluid adapted to heat air at the hood itself.
  • the system 1 is provided with at least one sensor assembly 14, 15 associated with the hood 10, 11 and adapted to detect the operating temperature Ti, T 2 and the relative operating humidity U r i, U r 2 of the air at the hood 10, 11.
  • the system 1 comprises a management and control unit 9 operatively connected to the sensor assembly 14, 15 and to the burner device 12, 13 and adapted to:
  • condensation temperature of the air in the hood is meant the temperature below which the transition occurs between the aeriform state and the liquid state of the water vapor contained in the air at the hood 10, 11 and is calculated by the management and control unit 9 according to the values of operating temperature Ti, T 2 and the relative operating humidity U r i, U r 2.
  • the management and control unit 9 is equipped with a suitable software program adapted to activate the operating cycle of the management and control unit itself, at periodical and pre-established control intervals T C k.
  • control intervals T C k are between 60 sec and 150 sec.
  • the suction means 8 comprise two hoods 10, 11 of which a first hood 10, arranged at the inlet opening 5, and a second hood 11, arranged at the outlet opening 6.
  • the first hood 10 and the second hood 11 are adapted to extract the air at the inlet opening 5 and outlet opening 6 respectively, in such a way as to generate a counter flow of air with respect to the direction of forward movement A to facilitate the cooling of the foundry castings 2 and of the sandy material 3 even further with respect to what is obtainable by means of the dispensing means 7.
  • the system 1 comprises two burner devices 12, 13 of which a first burner device 12, arranged at the first hood 10 and adapted to heat the air at the first hood 10, and a second burner device 13, arranged at the second hood 11 and adapted to heat the air at the second hood 11.
  • Each of the burner devices 12, 13 is adjustable by the operator so that the heating fluid dispensed by them has a heating temperature Tbi, Tb2 predefined and preset by the operator him/herself depending on the applications.
  • each burner device 12, 13 is adapted to dispense the heating fluid having a minimum heating temperature Tbi, Tb2 substantially equal to 80°C, below which the burner devices 12, 13 switch off.
  • the first burner device 12 and the second burner device 13 operates to dispense the heating fluid at a first heating temperature Tbi and at a second heating temperature Tb2 respectively, substantially between 80°C and 185°C.
  • both the burner devices 12, 13 are adjusted so as to each dispense the heating fluid at the heating temperature Tbi, Tb2 substantially equal to 80°C.
  • the system 1 comprises two sensor assemblies 14, 15 of which:
  • a first sensor assembly 14 associated with the first hood 10 and adapted to detect a first operating temperature Ti and a first relative operating humidity Uri of the air at the first hood 10;
  • a second sensor assembly 15 associated with the second hood 11 and adapted to detect a second operating temperature T2 and a second relative operating humidity U r 2 of the air at the second hood 11.
  • each sensor assembly 14, 15 is of the type of a probe adapted to detect the temperature and the relative humidity of the air circulating in the proximity of the probe itself.
  • the first sensor assembly 14 detects the first operating temperature Ti and the first relative operating humidity U r i relating to the hygrometric characteristics of the air at the first hood 10 and therefore dependent on the temperature of the foundry castings 2 and of the relative molds in sandy material 3 entering through the inlet opening 5.
  • the management and control unit 9 is operatively connected to the first sensor assembly 14 and to the first burner device 12 and is adapted to:
  • Figure 2 shows a flow chart which indicates the operating mode preferred by the management and control unit 9 adapted to pilot the first sensor assembly 14 and the first burner device 12.
  • the first burner device 12 is adapted to maintain the first temperature deviation ⁇ of the first hood 10 between a first lower limit value, below which the air extracted by the first hood 10 has a temperature substantially below the first condensation temperature T c i, and a first higher limit value, above which the air has a substantially high temperature.
  • the air extracted from the first hood 10 has a first operating temperature Ti higher than the first condensation temperature T c i, thus avoiding the transition from the aeriform state to the liquid state of the water contained in the air in the first hood 10.
  • the management and control unit 9 is adapted to maintain the first burner device 12 at a first adjusted heating temperature Tbir coinciding with the first heating temperature TM:
  • the management and control unit 9 adjusts the first burner device 12 so that the first heating temperature TM increases to a predefined value.
  • the management and control unit 9 adjusts the first burner device 12 so that the first adjusted heating temperature Tbir is equal to 160°C.
  • the management and control unit 9 is adapted to adjust the first burner device 12 at a first adjusted heating temperature Tbir equal to:
  • the management and control unit 9 adjusts the first burner device 12 so that the first heating temperature TM is reduced by a predefined value.
  • the management and control unit 9 adjusts the first burner device 12 so that the first adjusted heating temperature Tbir is equal to:
  • the management and control unit 9 adjusts the first burner device 12 so that the first adjusted heating temperature Tbir is equal to:
  • the management and control unit 9 is configured so that with the passing of the execution time T ex of the system 1, at the end of each control interval T C k, such operating mode is repeated.
  • the management and control unit 9 is also operatively connected to the second sensor assembly 15 and to the second burner device 13 and is adapted to:
  • the air extracted from the second hood 11 has a second operating temperature T 2 higher than the second condensation temperature T C 2, thus avoiding the transition from the aeriform state to the liquid state of the water contained in the air in the second hood 11.
  • the sandy material 3 coming out of the outlet opening 6 must have temperature and relative humidity values substantially constant and predefined, such as to ensure an adequate degree of compactness.
  • the management and control unit 9 adjusts the second burner device 13 so that the second heating temperature Tb2 increases by a predefined value.
  • the management and control unit 9 adjusts the second burner device 13 so that the second adjusted heating temperature Tb2r is equal to 160°C.
  • the management and control unit 9 adjusts the second burner device 13 so that the second adjusted heating temperature Tb2r is equal to:
  • the management and control unit 9 adjusts the second burner device 13 so that the second heating temperature Tb2 is reduced by a predefined value.
  • the management and control unit 9 adjusts the second burner device 13 so that the second adjusted heating temperature Tb2r is equal to:
  • the management and control unit 9 adjusts the second burner device 13 so that the second adjusted heating temperature Tb2r is equal to:
  • the operating mode of the management and control unit 9 adapted to pilot the second sensor assembly 15 and the second burner device 13 is substantially the same as the preferred operating mode shown in figure 2 for the piloting of the first sensor assembly 14 and of the first burner device 12, and is repeated periodically with the passing of the execution time Tex according to the predefined control intervals T C k.
  • management and control unit 9 is adapted to command only the first sensor assembly 14 and the first burner device 12 or the second sensor assembly 15 and the second burner device 13, thereby intervening on just one of the two hoods 10, 11.
  • burner devices 12, 13 have manual operating means adapted to the manual switch-off by the operator of at least one of the burner devices 12, 13 in cases in which the temperature deviations ATi, ⁇ 2 have substantially high values compared to the higher limit value.
  • the suction means 8 comprise:
  • suction channel 17 for the fluid- operated connection of the suction machine 16 to each hood 10, 11 ;
  • motor means 18 operatively connected to the suction machine 16 and adapted to adjust the flow rate of the air flow sucked by the suction machine 16.
  • the suction machine 16 comprises at least one fan element and the motor means 18, e.g., of the electric type, are adapted to start the rotation of the fan element itself.
  • the motor means 18 have an inverter adapted to adjust the rotation speed of the fan element, as well as of the flow rate of the air flow moved along the channel 17.
  • the channel 17 is substantially a tubular element with a predefined diameter, the dimensions of which relate to the flow rate of the air flow circulating in it.
  • the system 1 comprises detection means 19 of a pressure value of the air flow sucked at the channel 17.
  • the detection means 19 are arranged along the channel 17 in a pre-established position for detecting the pressure value in such pre-established position.
  • the management and control unit 9 is operatively connected to the detection means 19 for the comparison of the pressure value of the air flow at the pre- established position of the channel 17 with a substantially predefined reference pressure value.
  • Such reference pressure value is suitably calculated according to the dimensions of the channel 17 and to the particular position along the channel 17 in which the detection means 19 are arranged.
  • the reference pressure value relating to the particular position in which the detection means 19 are arranged is equal to 145 mmH O.
  • the management and control unit 9 is adapted to adjust the inverter so that the pressure value of the air flowing along the channel 17 is substantially coincident with the reference pressure value.
  • the management and control unit 9 makes a comparison between the air pressure value at the channel 17, detected at each operating cycle having period Tck, and the reference pressure value.
  • the reference pressure value is predefined so as to maintain a speed of air substantially above 20 m/s along the entire channel 17.
  • the fact that the air speed value along the entire channel 17 is above 20 m/s prevents any deposit of fumes and dusts in the air along the channel 17.
  • such predefined pressure value results in the extracted air flow being fully conveyed along the channel 17 thus preventing any deposit of fumes and dust along the channel itself.
  • the system 1 comprises sensor means 20 arranged along the channel 17 and adapted to detect a value of final temperature Tf and of final relative humidity U r f of the air flowing along the channel 17.
  • the management and control unit 9 is operatively connected to the sensor means 20 and is adapted to:
  • FIG. 3 shows a flow chart of a preferred operating mode wherein the management and control unit 9 pilots the burner devices 12, 13 according to the data detected by the sensor means 20; such operating mode is repeated according to the control intervals T C k with the passing of the execution time T ex of the system 1.
  • the threshold value T s is substantially equal to 3°C and in the case of the final temperature deviation ATf of the channel 17 being below such threshold value T s , the first burner device 12 is adapted to dispense a first maximum heating temperature Tbimax substantially equal to 200°C, while the second burner device 13 is adapted to dispense a second maximum heating temperature Tb2max substantially equal to 180°C.
  • the management and control unit 9 commands the burner devices 12, 13 so that they dispense heating fluids at adjusted heating temperatures Tbir, Tb2r such as to avoid the condensation of the air flowing along the channel 17. More in detail, within the scope of the present treatise by the expression final condensation temperature T C f of the air in the channel 17 is meant the temperature below which the transition occurs between the aeriform state and the liquid state of the water vapor contained in the air flowing along the channel 17 and is calculated by the management and control unit 9 according to the values of final temperature Tf and of final relative humidity U r f.
  • the system 1 comprises a filtering device 21 of the air sucked by the suction machine 16, interposed between the hoods 10, 11 and the suction machine itself, adapted to filter and abate polluting fumes and dust present in the air flowing along the channel 17.
  • the filtering device 21 is a sleeve filter made of specific fabric for removing dust from the air extracted by the suction machine 16.
  • the suction means 8 comprise at least an opening valve 22 arranged along the channel 17 and adapted to convey an auxiliary air flow substantially at ambient temperature or at a lower temperature than the air temperature circulating along the channel 17.
  • auxiliary air flow comes, e.g., from the space surrounding the channel 17 or from areas within the foundry installation.
  • the management and control unit 9 is operatively connected to the opening valve 22 and is adapted to command the opening of the opening valve itself in the event of the final temperature deviation ATf of the channel 17 rising above a preset safety value.
  • the filtering device 21 may be subject to possible damage caused by the overheating of the sleeves making up the filtering device itself.
  • the system 1 comprises a pressure transducer 23 arranged along the channel 17 and interposed between the filtering device 21 and the suction machine 16.
  • the pressure transducer 23 is adapted to detect the pressure drop value of the filtering device 21.
  • the drop in pressure indicates the pressure variation between the flow of air entering the filtering device 21 and the flow of air exiting from the filtering device 21 due to the passive forces exercised by the filtering device itself which oppose resistance to the transit of the air flow inside it.
  • Such drop in pressure represents a sign of the degree of efficiency of the filtering device 21.
  • the filtering device 21 will have reduced efficiency or inefficiency of the filtering of the fumes and dusts present in the air circulating along the channel 17, with consequent need to replace the filtering device 21.
  • the suction means 8 comprise an exhaust chimney 24 arranged downstream of the suction machine 16 and adapted to expel the air flow circulating along the channel 17.
  • the exhaust chimney 24 is provided with a group of detection devices 25 for detecting the temperature, flow rate and dustiness of the air flowing along the exhaust chimney 24 as a result of the relevant suction and filtering.
  • the group of detection devices 25 comprises:
  • a temperature sensor adapted to detect the temperature of the air flowing along the exhaust chimney 24;
  • a pressure sensor adapted to detect the pressure of the air flowing along the exhaust chimney 24;
  • such pressure sensor is a Pitot tube adapted to detect the speed of the air flow starting with the pressure of the air flow itself.
  • the means of detection of the dustiness can be, e.g., of the type of optical sensors or triboelectric effect sensors.
  • Such group of detection devices 25 permits monitoring the parameters of the air flowing in the exhaust chimney 24 and checking whether these are contained within predefined levels such as to ensure compliance with the standards relating to the emission of polluting substances into the air.
  • the appointed operator can detect any faults or malfunctions of the burner devices 12, 13, of the suction means 8 and of the filtering device 21 and perform relevant maintenance and/or resetting jobs on them.
  • the system 1 is adapted to continuously monitor the necessary and crucial parameters for their correct operation.
  • the system made this way permits obtaining a reduction in the consumption of electricity of up to 15000 KW/year and of fuel, e.g., natural gas, of up to 10000 Sm 3 /year.
  • fuel e.g., natural gas
  • the system made this way sets up automatically depending on the changes in the hygrometric characteristics of the air extracted through the hoods.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Mold Materials And Core Materials (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

La présente invention concerne un système de décochage (1), pour des pièces moulées de fonderie, qui comprend des moyens de séparation, pour la séparation d'une pièce moulée de fonderie (2) d'un moule en matériau sableux (3), qui possèdent : un élément de tambour rotatif (4), ayant une ouverture d'entrée (5) pour la pièce moulée de fonderie (2) devant être décochée et pour le moule en matériau sableux (3), et une ouverture de sortie (6) pour la pièce moulée de fonderie (2) refroidie et décochée et pour le matériau sableux (3) ; un moyen d'aspiration d'air (8) ayant une hotte (10, 11) agencée au niveau de l'une de l'ouverture d'entrée (5) et de l'ouverture de sortie (6) ; un dispositif de brûleur (12, 13) qui est relié de manière fluidique à la hotte (10, 11) et conçu pour distribuer un fluide de chauffage conçu pour chauffer l'air au niveau de la hotte (10, 11) ; un ensemble capteur (14, 15) associé à la hotte (10, 11) et conçu pour détecter la température de fonctionnement (T1, T2) et l'humidité de fonctionnement relative (Ur1, Ur2) de l'air au niveau de la hotte (10, 11) ; le système (1) comportant une unité de gestion et de commande (9) reliée de manière fonctionnelle à l'ensemble capteur (14, 15) et au dispositif de brûleur (12, 13) et conçue : pour calculer la température de condensation (Tc1, Tc2) de l'air dans la hotte (10, 11) en partant de la température de fonctionnement (T1, T2) et de l'humidité de fonctionnement relative (Ur1, Ur2) détectée par l'ensemble capteur (14, 15) ; pour calculer l'écart de température (ΔΤ1, ΔΤ2) de la hotte (10, 11) égal à la différence entre la température de fonctionnement (T1, T2) et la température de condensation (Tc1, Tc2) de l'air dans la hotte (10, 11) ; pour ajuster le dispositif de brûleur (12, 13) de façon à maintenir l'écart de température (ΔΤ1, ΔΤ2) de la hotte (10, 11) compris entre deux valeurs limites prédéfinies.
PCT/IB2017/053176 2016-06-01 2017-05-30 Système de décochage pour des pièces moulées de fonderie Ceased WO2017208151A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUA2016A004053A ITUA20164053A1 (it) 2016-06-01 2016-06-01 Impianto di distaffatura di getti da fonderia
ITUA2016A004053 2016-06-01

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WO2017208151A1 true WO2017208151A1 (fr) 2017-12-07

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CN113042677A (zh) * 2021-03-03 2021-06-29 王小平 一种铸造混砂机吸尘用自动添加剂注入装置

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CN116222168B (zh) * 2023-03-14 2023-09-22 南京耀天干燥设备有限公司 一种真空烘箱

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1079474A (fr) * 1976-12-17 1980-06-17 Marinus H. Weststrate Dispositif pour refroidir les pieces de fonte et traiter le sable de moulage
EP0066931A1 (fr) * 1981-06-04 1982-12-15 Dansk Industri Syndikat A/S Appareil pour traiter des moules en sable contenant plusieurs pièces coulées
EP0625390A2 (fr) * 1993-05-21 1994-11-23 General Kinematics Corporation Procédé de coulage et dispositif pour réfrigérer et nettoyer
EP0755735A1 (fr) * 1995-07-25 1997-01-29 Didion Manufacturing Company Régénérateur rotatif pour régénérer et reclassifier le sable de fonderie
DE10354493A1 (de) * 2003-11-21 2005-06-09 Elino Industrie-Ofenbau Carl Hanf Gmbh & Co. Verfahren zum Befreien von Gußteilen von Gießsandresten und Vorrichtung zur Durchführung des Verfahrens
US20100025508A1 (en) * 2008-07-29 2010-02-04 Didion Michael S Rotary tumbler and metal reclaimer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1079474A (fr) * 1976-12-17 1980-06-17 Marinus H. Weststrate Dispositif pour refroidir les pieces de fonte et traiter le sable de moulage
EP0066931A1 (fr) * 1981-06-04 1982-12-15 Dansk Industri Syndikat A/S Appareil pour traiter des moules en sable contenant plusieurs pièces coulées
EP0625390A2 (fr) * 1993-05-21 1994-11-23 General Kinematics Corporation Procédé de coulage et dispositif pour réfrigérer et nettoyer
EP0755735A1 (fr) * 1995-07-25 1997-01-29 Didion Manufacturing Company Régénérateur rotatif pour régénérer et reclassifier le sable de fonderie
DE10354493A1 (de) * 2003-11-21 2005-06-09 Elino Industrie-Ofenbau Carl Hanf Gmbh & Co. Verfahren zum Befreien von Gußteilen von Gießsandresten und Vorrichtung zur Durchführung des Verfahrens
US20100025508A1 (en) * 2008-07-29 2010-02-04 Didion Michael S Rotary tumbler and metal reclaimer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"BARTLETT-SNOW ROTARY THERMAL PROCESSING EQUIPMENT AND SYSTEMS", ABB RAYMOND BULLETIN, XX, XX, no. 873R, 1 January 1990 (1990-01-01), pages 1 - 24, XP000826583 *
SMITH R J: "SELECTING A THERMAL RECLAIMER FOR GREEN SAND. \PART 1: TYPES OF EQUIPMENT", MODERN CASTING, AMERICAN FOUNDRY SOCIETY, SCHAUMBURG, IL, US, vol. 81, no. 8, 1 August 1991 (1991-08-01), pages 32 - 34, XP000237676, ISSN: 0026-7562 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113042677A (zh) * 2021-03-03 2021-06-29 王小平 一种铸造混砂机吸尘用自动添加剂注入装置

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