DE2221394C2 - - Google Patents

Description

of the molding sand as well as a device for penetrating the £ radiant wall ceilings for

^ SiKSSSK there is the problem ge ^^^^^

needed molding mask sand, made with synthetic resins of a simple and bej £

or their solid combustion residues are enveloped 50 and allow easy adjustment

is to be regenerated so that it can be used again at different temperatures

⁶ combustion air from above, below or from Deiaen

The German Auslegeschrift 1287 748 allows an optimal adaptation to directions

a device for regenerating molding sand the ongoing combustion process

became known in which a specially trained 55 Hin embodiment of the brfmdung is on

ter shaft furnace is used. The pantry hand of the Schcmatic figure explains,

at the lower end of this shaft furnace has a connection with combustible stoves, e.g. synthetic

supplement to which the extended combustion chamber, zen. Contaminated molding sand is over erae FjnJerem

which is trimmed downwards by a tiltable grate 1, e.g. a magnet r π Jer

is closed, connects. Through the bottom grate falls 60 vibrating conveyor trough 2 supplied. ^{D e} ^ ^ιη | ^ίθΓ £ -

the annealed sand on further transport channel 2 is deposited in a known manner on springs 3

facilities. Instead of a shaft furnace, it is also possible to use supports and are stimulated by an imbalance.

Cyclones designed as heat exchangers in connections. The vibrating conveyor 2 is with a

dung covered with a combustion chamber according to the German radiation wall ceiling 5, so that between1 the

Auslegeschrift 1758 863 for the regeneration of the vibrating conveyor channel 2 with 65 and the beam wall ceiling 5

Plastic mixed molding sand is used, which is created with the help of the closed space

£ _en ^? Radiant wall ceiling on one of the plastic particles

The previously known solution pre-burning temperature can be heated. The to

Air necessary for the combustion process can be in In a manner not shown, both from above through the radiant wall ceiling S and from below through the Vibratory conveyor trough 2 are fed and flow out via the take-off device 6.

During the transport on the vibratory conveyor trough 2, the volatile constituents initially burn the foreign matter. The solid components with a higher ignition point burn themselves in the further course of the transport at higher Temperatures, so that at the end of the oscillation £ rderrinne2 one of combustion chambers free sand thrown off and back into the process

th sieving device? e.g. a vibrating sieve Combustible solid foreign matter added to the molding sand may not be separated.

For this 1 sheet of drawings

Claims (4)

ν * 2 require complex and sometimes very sssSSSSi I.A represented for regenerating with combustible ι sla wz * _Vorric Pla the initially trollable impurities behaftetem molding sand, for example, S method and _by * _infachster Ausfiih-form mask sand, by heating the Formsan- ^w ^ ^nlen _H ^ X ^S Sebssich _S Sa fe ty lowest investment, characterized in that the tion and large Betneossic Heating to one or more cost several successively ^{ve "irsac} £ ^ei ^ _{OF INVENTION} dung accordance characterized geangeordneteP vibrating feeders performed ^{Dl" e} _n ^{A "fg} FRHI ^ s on one or more hinwird ^{xo Ios} ^ - ^. ^ Associated vibrating feeders 2. The method according to claim 1, characterized one above the other? «» ™ J of _{the Erfm} dung indicates that the heating of the molding sand ^^ f ^ jT: oh _neh i _n required oscillation in a known manner in at least two heating au which can _{also be done in} stages with different temperatures ^^ ÄSjVrSderiich are. The heating 3. Device for carrying out the method 15 the heat generators ο _well- known manner in rens according to claim 1 to 2, characterized in the molding sand, erfogt in an src * De _era records that the vibrating conveyor trough (2) by at least two f ^^ SSndteile should be covered in a radiant wall ceiling (5) that is in doors. The ^ easily UFE Uucm ge ^ _higher various portions of the Schwingfeder- a first S and .Λ * * _ it groove on different high temperatures einge- ao m fntzundungspunkt the wide ^ ^ ^^^ represents is. fen and uaseu essential water 4. A device according to claim, characterized overall Evaporate in "^ DSSI ^ Si, this method features that a plurality of successively Toggle steam and. ^ ° J ^le Jj _e ¹⁰ o _e g _enerauon the molding sand parent, covered with beam wall ceiling (5) ^ «^ J ^ S ^ SSinen, which are provided in the general vibratory conveyor chutes (2), which are on .5 during the J ™ ^ ⁶⁵ , ™ _The vibrating movement among each other include different temperatures as well as ^ ° required ^ ^ ^^ J ^ The seal according to claim or 4, fende DurchmShung £ ^ identifies duTch feeds for the even combustion of the Combustion air from above through the jet wall - regenerated molding sand '«« Jh ^^ J ceiling (5? and / or from below by the swinging stands The ^^ ί ^ -nftSSuiyd, are S according to one of the claims SSdSÄd load the system nor the ^^ t ^ r ^^^^ Z ^ 33 "^ 'device, vibrating conveyor runners arranged one behind the other is 9 ^ ^a f ^B f nen (2) a screening device (7), e.g. a vibrating conveyor trough covering a conveyor trough, is arranged downstream Sections of Schw "£ ^ f" £ different high temperatures is set 40 den several oscillating conveyor troughs are used, they are appropriate on different temperatures from each other, The invention relates to a method for rain heating. The necessary ^^^ Γ °