• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    For packing granular materials, especially foundry moulding materials, by means of an exothermic reaction of a mixture of air and fuel in a combustion chamber (23), a relative movement between the combustible mixture and one or several pulse triggers (19), is produced during the exothermic reaction, preferably by a blower (20) disposed in the combustion chamber (23). Hence the measured amount of sand introduced into a moulding frame (11) and a filling frame (12) over a pattern (6) by means of a sand container (17) is packed to form a mould body.
    公开号:SU980605A3
    申请号:SU792851658
    申请日:1979-12-14
    公开日:1982-12-07
    发明作者:Фишер Курт；Штайнеманн Роберт；Таннер Ханс
    申请人:Георг Фишер Аг (Фирма)；
    IPC主号:
    专利说明:

    ! The invention relates to drinking production, in particular to pulsed methods of compaction of drinking forms.
    A known method of sealing drinking forms with an explosion, including initiating 5 an exothermic reaction of a mixture of air and a combustible substance in a closed system, and a device for its implementation, containing mounted on one another model plate, flask, -10 filling frame and bell-type combustion chamber £ 1].
    However, the known technical solution has a number of disadvantages: increased risk during storage minutes rabo- ί5 those with explosives in a foundry, irreproducibility of results. In addition, the use of pure oxygen increases the cost of the mold manufacturing process.
    The purpose of the invention is the improvement of econo .- *. identity and process safety.
    This goal is achieved by the fact that according to the method of compacting the molding material by initiating an exothermic reaction of a mixture of air and a combustible substance in a closed system, the mixture. prior to ignition they are driven in a closed loop, and saturated carbon or a mixture thereof is used as a gaseous combustible substance. ”
    In addition, the surface of the compacted granular material is completely or partially covered by a gas-tight element before the start of the exothermic reaction.
    A device comprising a model plate mounted on top of each other, a flask,. the filling frame and the bell-shaped combustion chamber are equipped with a blower and pulse initiating devices arranged in the combustion chamber, and the combustion chamber is configured to change volume.
    In FIG. 1 shows the installation of the proposed device; in FIG. 2 device with a combustion chamber that allows you to change the volume; in FIG. 3 - device δόΟβόδ with a gas-tight element covering the mixture.
    The molding installation comprises a model plate 1 with model 2, mounted on a lifting table 3, on which a flask 4 and a filling frame 5 are placed, which can be moved on rollers 6 in the direction of the container 7 filled with the molding mixture 8, located above the filler frame 5 and forming the combustion chamber 9. The casing consists of a top cover 10 and side walls 11, a pulse generating device is placed therein, for example, <5 igniter 12, blower 13 with electric motor 14 guiding to face 15 and made an inlet 16 for fuel connected to the pipeline 17. m
    At the end of the mold manufacturing cycle, the casing 8 is positioned above the hood 18 to remove products <combustion. The casing 8 can be made sliding inside the frame 19, mounted 2S on the filling frame 5, and fixed in the required position by bolts 20 passing through the holes 21 in the frame 19 and screwed into the side wall 22. On the outside. 30 of the wall 22 there are seals. 23. The suction nozzle 24 of the blower 13 (Fig. 3) is located above the center of the submodel plate 1. With this arrangement, the flow of the combustible mixture, followed by the shock wave, propagates 35 towards the side walls and down, which contributes to a more uniform distribution of the mixture density over cross-sectional shape, this is achieved in tannin 40 with the placement of open below the vessel 25 in the combustion chamber. The vessel 25 through the rods 26 and detachable connection with the wall 11 of the casing
    8. In this case, the vessel 25 is immersed when installing the casing 8 on the flask 4 th filling frame 5 in the molding mixture so that its bottom 27 is above the level of sand.
    Instead of a blower in the combustion chamber, one or more pulse generators mounted in the form of igniters 12, which initiate ignition of the mixture (Fig. 2), with adjustment of the ignition time 5ί and rotation speed, mounted on the shaft 28, can be used to create a 5C combustion of the combustible mixture.
    The device operates as follows.
    The next submodel plate 1 c) is installed and On it the flask 4 and the filling frame 5 are fed under the rollers 6 under the container 7 and lifted by a stop 3 to the container 7, where the mold is filled with mold sand. Then the tank 7 is shifted to the side and its place is taken by the casing 8, which forms the combustion chamber 9. Through the pipe 17, heat is introduced into the combustion chamber 9 filled with air at atmospheric pressure. At this pressure, the combustion chamber increases slightly (in the case of natural gas introduced in stoichiometric amounts, the pressure. Import · will increase by about 0.1 bar). Using the blower 13, air and fuel are mixed to form an explosive mixture. To control the movement of the explosive mixture, the performance of the blower can be changed by turning its blades or changing the speed. Igniter 12 ignites the mixture while the blower 13 is operating, and the moldable mixture is densified. The maximum pressure during ignition of the mixture is about 8 bar. The pressure drop depends, all other things being equal, on the wall temperature, which can be provided with cooling channels for continuous continuous operation 29. Gaseous products of combustion exit through exhaust devices or between parts 1, 4, 5 and 11. The excess pressure drops to zero when lowering the table 3, after which the container 7 occupies a position above the filling frame 5, where, after changing the model-reference set, the last molding the mixture, and the housing mounted above the hood 18. The blower 13 runs continuously during the whole process, performing the function of mixing the combustible mixture, increase the propagation velocity of the flame front and the displacement of the exhaust gases' from the combustion chamber. The optimal ratio between the volumes of the combustion chamber and the molding sand for different-sized models is established by means of a sliding casing8 (figure 2)
    权利要求:
    Claims (3)
    [1]
    CTBD Covers a mixture of gas-tight element. The molding machine contains sub-model plate 1 with model 2, installed; on the lifting table 3, on which the flask 4 and the filler are placed on the frame 5, which can be mixed on the rollers 6 in the direction of the container 7 filled with molding sand. The container 7 is connected to the casing 8 located above the filling frame 5 and about &amp; blow the combustion chamber 9. The casing consists of the top cover 1O and the side walls 11, it contains a device for generating pulses, such as an igniter 12, a blower 13 with electric motors 14, guided by a ring 15 and a fuel inlet 16 connected to the pipeline 17 . At the end of the manufacturing cycle of the mold, the case 8 is positioned above the draft 18 to remove the combustion products. The casing 8 can be made sliding inside the frame 19, mounted on the filling frame 5, and fixed in position with bolts 20, passing through the holes 21 in the frame 19 and screwing into the side wall 22. On the outer side. walls 22 are sealable. 23. The suction nozzle 24 of the blower 13 (FIG. 3) is placed above the center of the model plate 1. With this arrangement, the flow of the combustible mixture followed by the shock wave propagates in the direction of the side walls and downwards, which contributes to a more even distribution of the mixture density across the section this is achieved in combination with stirring the open bottom 25 of the vessel in the combustion chamber. The vessel 25 is connected by means of rods 26 and a detachable connection with the wall 11 of the casing 8. At the same time, the vessel 25 is immersed when the casing 8 is installed on the side 4 and the filling frame 5 in the molding sand in such a way that its bottom 27 is above the level of sand. Instead of a blower in the combustion chamber, one or several pulleys installed on the shaft 28 can be used to create the movement of a combustible mixture. They are igniters 12 pulse generators that initiate the ignition of the mixtures (Fig. 2), with ignition time and rotation speed settings. The device works as follows. The next sub-model plate 1 with the new one and on it the flask 4 and the filling frame 5 are fed through rollers 6 under the container 7 and up the table 3 to the container 7, where the mold is filled. Then the container 7 is mixed to the side and its place is taken by the casing 8, which forms the combustion chamber 9. Through the pipeline 17 into the combustion chamber 9, filled with air, heat is introduced at atmospheric pressure. With this pressure in the combustion chamber, the pressure slightly increases (in the case of natural gas introduced in a glass-ceramic amount, the pressure increases approximately by 0 -1 bar). Using the air blower 13, air and fuel are mixed to form an explosive mixture. To control the movement of an explosive mixture, the performance of a blower can be varied by turning its blades or changing the number of revolutions. The igniter 12 ignites the mixture when running the blower 13, this results in compaction of the molding mixture. Maximum pressure when the mixture ignites. is about 8 bar. The drop in pressure depends, other things being equal, on the temperature of the walls, which during long-term continuous operation can be supplied with cooling channels 29. Gaseous combustion products leave through exhaust devices or between parts 1, 4, 5 and 11 The overpressure drops to zero when the table 3 is lowered, after which the tank 7 takes a position above the filling frame 5, where after changing the model optional set, the latter is filled with molding sand, and the casing is installed above t zhkoy 18. The blower 13 runs continuously during the whole process, performs the function of mixing the components of the combustible mixture povysh &amp; audio combustion front propagation speed and the displacement of the exhaust gases from the combustion chamber. The optimum cooiv ratio between the volumes of the combustion chamber and the molding mixture for differently sized models is established by means of a sliding casing $ (Fig. 2). Invention 1. A method for compacting granular materials, in particular a foundry molding material, including initiating an exothermic reaction of air and combustible matter in Deputy, to the whip system, otpichasya the fact that, in order to improve the efficiency and safety of the process, the mixture before the ignition is set in motion along a closed loop, causes in Saturated carbon or its mixture is used as a gaseous combustible substance.
    [2]
    2. The method according to claim 1, wherein the surface of the compacted granular material is completely or partially covered by a gas-tight element before the start of the exothermic reaction.
    [3]
    3. A device for compacting granular materials, containing a model plate mounted on each other, a flask, a filling frame and a bell-shaped combustion chamber, characterized in that it is provided with a blower and pulse initiating devices placed in the combustion chamber and the combustion chamber is made with the ability to change the volume.
    Sources of information taken into account in the examination
    1. US patent No. 317О2О2, cl. 164-37, pub. 1965.
    eight
    FIG. 3
    类似技术:
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    同族专利:
    公开号 | 公开日
    NL7909009A|1980-06-17|
    IT7928040D0|1979-12-17|
    AT381877B|1986-12-10|
    US4306609A|1981-12-22|
    IT1127706B|1986-05-21|
    DK160135B|1991-02-04|
    DK160135C|1991-07-08|
    DK534579A|1980-06-16|
    IN152071B|1983-10-08|
    PL220347A1|1980-09-08|
    DD147822A5|1981-04-22|
    NL179633C|1986-10-16|
    ATA758779A|1986-05-15|
    PL125961B1|1983-06-30|
    BR7908206A|1980-07-22|
    DE2949340C2|1983-03-03|
    FR2443891A1|1980-07-11|
    SE7910346L|1980-06-16|
    CS230553B2|1984-08-13|
    DE2949340A1|1980-06-19|
    IT7923371V0|1979-12-17|
    AU5363279A|1980-06-19|
    GB2038216B|1983-01-19|
    AU528384B2|1983-04-28|
    NL179633B|1986-05-16|
    GB2038216A|1980-07-23|
    SE457065B|1988-11-28|
    FR2443891B1|1984-08-10|
    LU81946A1|1980-07-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2830339A|1955-11-25|1958-04-15|Taccone Pneumatic Foundry Equi|Molding machine|
    US3170202A|1962-08-22|1965-02-23|Sr William J Huston|Foundry process|
    DE2128371A1|1971-06-08|1972-12-28|Dynamit Nobel Ag, 5210 Troisdorf|Process for compacting granular materials by means of explosion pressure|
    DE2249244A1|1972-10-07|1974-04-11|Buderus Eisenwerk|Explosive compaction and hardening of moulding sand - contg. plastics binder, by controlled detonation of gas mixts esp. hydrogen- oxygen|CH637044A5|1979-02-02|1983-07-15|Fischer Ag Georg|Method for compacting sand form in a form device.|
    DE3025993C2|1980-07-09|1983-11-10|Sintokogio, Ltd., Nagoya, Aichi|Molding device for explosive compression of a sand-like filler material|
    CH648498A5|1980-11-06|1985-03-29|Fischer Ag Georg|METHOD FOR COMPACTING granular materials, ESPECIALLY FOUNDRY FORM SUBSTANCES.|
    DE3044578A1|1980-11-26|1982-07-08|Arenco-Bmd Maschinenfabrik Gmbh, 7500 Karlsruhe|Moulding sand consolidation - by gas pressure generated by arc discharge of high-tension current|
    CH650175A5|1981-01-23|1985-07-15|Fischer Ag Georg|METHOD AND DEVICE FOR DOSING FUELS IN THE PRODUCTION OF FOUNDRY SANDS.|
    CH654229A5|1981-07-20|1986-02-14|Fischer Ag Georg|DEVICE FOR FILLING A CONTAINER WITH A GRAINY SUBSTANCE.|
    CH653579A5|1981-07-20|1986-01-15|Fischer Ag Georg|METHOD FOR COMPRESSING GRAINY MOLDING MATERIALS, IN PARTICULAR FOUNDRY MOLDING MATERIALS, AND DEVICE FOR CARRYING OUT THE METHOD.|
    DE3149172A1|1981-12-11|1983-06-30|Georg Fischer AG, 8201 Schaffhausen|"METHOD FOR PRODUCING MOLDED BODIES USING GAS PRESSURE"|
    EP0089547B1|1982-03-23|1986-05-28|BMD Badische Maschinenfabrik Durlach GmbH|Method and device for compacting foundry moulding sand|
    DE3317196C2|1983-05-11|1988-11-17|Bmd Badische Maschinenfabrik Durlach Gmbh, 7500 Karlsruhe, De|
    DE3319030C2|1983-05-26|1989-06-08|Bmd Badische Maschinenfabrik Durlach Gmbh, 7500 Karlsruhe, De|
    CH659782A5|1983-06-02|1987-02-27|Fischer Ag Georg|METHOD AND DEVICE FOR COMPRESSING GRAINY MOLDS.|
    DE3327822A1|1983-08-02|1985-02-14|Josef Mertes Engineering für Gießereianlagen, 5928 Laasphe|METHOD AND DEVICE FOR COMPRESSING GRAIN-MOLDED MOLDING SUBSTANCES e.g. FOUNDRY MOLD SAND|
    CH666426A5|1984-06-25|1988-07-29|Fischer Ag Georg|Form investment.|
    ES2011685A6|1988-10-21|1990-02-01|Lopez Foronda Fernandez Vicent|Improvements introduced in air impact molding machines.|
    IT1225165B|1988-11-21|1990-11-02|Stern Giesserei Anlagen Gmbh|EQUIPMENT FOR COMPRESSION OF THE FORMING EARTH IN THE FOUNDRY BRACKETS BY COMPRESSED AIR IMPULSES.|
    ES2012702A6|1989-04-06|1990-04-01|Erana Agustin Arana|Improvements in air impact sand-box moulding machines.|
    CH682547A5|1990-04-20|1993-10-15|Fischer Ag Georg|Method and apparatus for compressing granular molding materials.|
    US20020027315A1|2000-03-10|2002-03-07|Parker Gerard E.|Low-firing temperature method for producing Al2O3 bodies having enhanced chemical resistance|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH1276878A|CH634765A5|1978-12-15|1978-12-15|Method for the production of a casting mould|
    CH1015079A|CH640437A5|1979-11-14|1979-11-14|Method and apparatus for compacting granular materials|
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