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1. 发明专利

JPH08278082A ROTARY MELTING FURNACE 失效
公开(公告)号：JPH08278082A
公开(公告)日：1996-10-22
申请号：JP7906895
申请日：1995-04-04
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYOTA MOTOR CORP , TEISAN KK , NANIWA ROKI KENKYUSHO KK
发明人： HIRANO HARUYOSHI , HIRAI HIDETOSHI , KAMIYA YUJI , KOBAYASHI HIROSHI , OKADA YUJI , SHIRAKAWA HIROICHI , TSURUOKA HIROYUKI , CHOKAI MAKOTO , TANAKA HIROYUKI , MURATA HIROTOSHI
IPC分类号： F27D17/00 , F27B7/12
摘要： PURPOSE: To prevent the exhaust of smoke from a furnace body and to reduce the loss of the thermal energy. CONSTITUTION: The rotary melting furnace comprises a cover holder 7 arranged on the moving locus of an exhaust port 14 in the case of moving a furnace body 1, and a cover member 8 detachably held by the holder 7, engaged with the flange 15 of the body 1 to cover the port 14 in the case of shifting the body 1 from a horizontal attitude to an upright attitude and engaged to be returned to the holder 7 when the body 1 is reset from the upright attitude to the horizontal attitude.

2. 发明专利

JPH07300631A METHOD FOR RECOVERING ZINC OXIDE BY OXYGEN BURNER TYPE ROTATING MELTING FURNACE AND DEVICE THEREFOR 失效
公开(公告)号：JPH07300631A
公开(公告)日：1995-11-14
申请号：JP9019694
申请日：1994-04-27
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYOTA MOTOR CORP , TEISAN KK , NANIWA ROKI KENKYUSHO KK
发明人： HIRANO HARUYOSHI , HIRAI HIDETOSHI , KAMIYA YUJI , KOBAYASHI HIROSHI , SHIRAKAWA HIROICHI , KIZAKI TSUTOMU , OKADA YUJI , TAKEUCHI YASUO , TSURUOKA HIROYUKI , CHOKAI MAKOTO , TAKIMOTO YUTAKA , ONO YUTAKA , MURATA HIROTOSHI
IPC分类号： C01G9/02 , B01J19/28 , C22B19/38 , F27B7/12 , F27B7/20 , F27D17/00
摘要： PURPOSE:To inexpensively recover zinc oxide powder with high purity by charging zinc-contg. iron materials into an oxygen burner type rotary melting furnace and introducing waste gases to a physical powder capturing means in the limited time zone of an initial period of a melting stage of these iron materials. CONSTITUTION:The iron materials contg. the zinc are charged into the cylindrical furnace body 10 of the oxygen burner type rotary melting furnace and are rotated around a revolving shaft X approximately aligned to an axial center. Propane is blown off together with oxygen and is then burned by using an oxygen burner 3 from one opening 11a. As a result, the iron materials described above are melted and are taken out and recovered by tilting the furnace body 10. At this time, the waste gases are introduced from a bypass passage 42 through a cooling chamber 44 to a cyclone 45 by manually or automatically operating a damper 43 disposed in a duct 4 in the oxidizing atmosphere in the furnace and at the time zone when the zinc at b.p. 930 deg.C evaporates in the initial period during the melting stage described above. The zinc oxide powder formed by oxidation of the evaporated zinc in the furnace body 10 is recovered in this cyclone and is discharged to a recovering box 46.

3. 发明专利

JPH0673570A SEPARATION OF COATING METAL 失效
公开(公告)号：JPH0673570A
公开(公告)日：1994-03-15
申请号：JP22953692
申请日：1992-08-28
申请人： TEISAN KK , TOYOTA MOTOR CORP
发明人： CHOKAI MAKOTO , TSURUOKA HIROYUKI , KAWANAMI TOSHIHIRO , KIZAKI TSUTOMU , MIGAMI TAKANORI , FUJII AKIRA , MATSUBARA EIKICHI
IPC分类号： C23F4/02 , C22B7/00
摘要： PURPOSE:To reduce the inclusion of a coating metal in the melt base metal at the time of removing the coating metal from a metallic piece formed by plating the surface of a base metal with the coating metal having a lower m.p. than the base metal. CONSTITUTION:A coating metal is separated from a metallic piece 4 formed by plating the surface of a base metal with the coating metal having a lower m.p. than the base metal. In this case, the piece 4 is placed in a heating furnace 7 and uniformly and directly heated in a reducing atmosphere by the combustion flame at a temp. higher than the m.p. of the coating metal and lower than that of the base metal to vaporize the coating metal from the piece 4, and the vaporized coating metal is discharged outside the furnace along with the waste combustion gas.

4. 发明专利

JPH0450619A FLOW-RATE MEASURING METHOD FOR LOW-TEMPERATURE LIQUEFIED GAS AND FLOWMETER USING SAME 失效
公开(公告)号：JPH0450619A
公开(公告)日：1992-02-19
申请号：JP15169490
申请日：1990-06-12
申请人： TEISAN KK
发明人： CHOKAI MAKOTO , KOITANI KAZUROU
IPC分类号： G01F1/00
摘要： PURPOSE:To detect the accurate flow rate of low-temperature liquefied gas in feeding after gas-liquid separation by expanding the low-temperature liquefied gas to intended pressure, vaporizing a part of the liquefied gas, thereafter separating the gas and the liquid, and measuring the flow rate of the separated vaporized gas. CONSTITUTION:Low-temperature liquefied gas in a tank 1 becomes an gas-liquid equilibrium state at pressure P1. The gas is taken out of the tank 1 through a liquid taking-out pipe 5. The gas is sent into a heat-insulated low-temperature liquefied-gas guide pipe 6. The gas is expanded to intended pressure P2 through an expansion valve 7 provided in the guide pipe 6. The liquefied gas is expanded and vaporized through the expansion valve 7. The gas is separated in a gas-liquid separator 8. The vaporized gas is guided out of a vaporized- gas guide pipe 10. The low-ltemperature liquefied gas which remains in the liquid state is sent through a low-tgemperature liquefied-gas feeding pipe 9. The ratio between the gasfied gas and the low-temperature liquefied gas is determined based on the kinds of the low- temperature liquefied gas and the gasified gas, the pressure P1 in the tank 1 and the pressure Pd2 in the gas-liquid separator 8. Therefore, the flow rate of the gas flowing through the low-temperature liquefied-gas feeding pipe 9 can be obtained by computation based on the numerical values measured with a vaporized-gas flowmeter 11.

5. 发明专利

JP2758977B2 失效
公开(公告)号：JP2758977B2
公开(公告)日：1998-05-28
申请号：JP15169490
申请日：1990-06-12
申请人： TEISAN KK
发明人： CHOKAI MAKOTO , KOITANI KAZURO
IPC分类号： G01F1/00

6. 发明专利

JPH07294147A BURNER TYPE ROTARY MELTING FURNACE 失效
公开(公告)号：JPH07294147A
公开(公告)日：1995-11-10
申请号：JP9020494
申请日：1994-04-27
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYOTA MOTOR CORP , TEISAN KK , NANIWA ROKI KENKYUSHO KK
发明人： HIRANO HARUYOSHI , HIRAI HIDETOSHI , KAMIYA YUJI , KOBAYASHI HIROSHI , SHIRAKAWA HIROICHI , KIZAKI TSUTOMU , OKADA YUJI , TAKEUCHI YASUO , TSURUOKA HIROYUKI , CHOKAI MAKOTO , TAKAHANE MINORU , MURATA HIROTOSHI
IPC分类号： F27D21/02 , F27B7/12 , F27B7/34 , F27B7/42
摘要： PURPOSE:To judge the melting state of a raw material in a furnace body without obstructing an airtight state in the body. CONSTITUTION:A sight cylinder 20 is provided at least at one of a cover member 2 and a duct 4. The cylinder 20 is extended to the exterior via a through hole 20a opened within a furnace body 10 and sealed at the outer end of the hole 20a by heat resisting glass 20b. An operator can visually recognize the material in the body 10 via the glass 20b and the hole 20a of the cylinder 20 without introducing the air in the atmosphere from the hole 20a into the body 10.

7. 发明专利

JPH07294146A METHOD AND APPARATUS FOR MANUFACTURING MELTED METAL FOR CAST IRON 失效
公开(公告)号：JPH07294146A
公开(公告)日：1995-11-10
申请号：JP9138694
申请日：1994-04-28
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYOTA MOTOR CORP , TEISAN KK , NANIWA ROKI KENKYUSHO KK
发明人： HIRANO HARUYOSHI , HIRAI HIDETOSHI , KAMIYA YUJI , KOBAYASHI HIROSHI , SHIRAKAWA HIROICHI , KIZAKI TSUTOMU , OKADA YUJI , TAKEUCHI YASUO , TSURUOKA HIROYUKI , CHOKAI MAKOTO , TAKAHANE MINORU , TANAKA HIROYUKI , TAKIMOTO YUTAKA , MURATA HIROTOSHI
IPC分类号： C21C1/08 , C22C33/04 , F27B7/12 , F27B7/34 , F27B7/36 , F27B7/42
摘要： PURPOSE:To provide a method and an apparatus for manufacturing melted metal for cast iron in which the saving of fuel and oxygen gas and the reduction in the oxygen content of the melted metal are realized by regulating a burning time or a flow rate ratio of the fuel to the oxygen gas to meet a melted state presumed from the variation in predetermined gas component in burning gas. CONSTITUTION:When the variation in a predetermined component content (e.g. CO gas concentration) during burning is detected by a CO gas sensor 7 by using a rotary melting furnace 1, the flow rate of the oxygen gas to be blown to a body 2 is reduced to be switched from an oxidation atmosphere burning to a reducing atmosphere burning. Thus, various types of unnecessary impurities are oxidized to be reduced, and the oxygen content of the melted metal can be reduced by the later reducing atmosphere burning. Continuation of burning for melting despite the completion of melting a raw material can be avoided.

8. 发明专利

JPH0882480A MELTING FURNACE FOR CAST IRON 失效
公开(公告)号：JPH0882480A
公开(公告)日：1996-03-26
申请号：JP21900594
申请日：1994-09-13
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYOTA MOTOR CORP , TEISAN KK , NANIWA ROKI KENKYUSHO KK
发明人： HIRANO HARUYOSHI , HIRAI HIDETOSHI , KOBAYASHI HIROSHI , KAMIYA YUJI , SHIRAKAWA HIROICHI , TSURUOKA HIROYUKI , CHOKAI MAKOTO , TAKAHANE MINORU , TANAKA HIROYUKI , MURATA HIROTOSHI
IPC分类号： F27B3/06 , F27B7/12 , F27B7/33
摘要： PURPOSE: To facilitate the tapping without involving damage to the taphole by providing a sealing plug formed of refractory material which is a frustum of cone to be fitted tightly in the taphole by the use of a bond therebetween and in which at the base end a locking part to engage with a tool for setting the sealing plug in place is formed. CONSTITUTION: A hole tapering and narrowed progressively toward the inside of a furnace is formed as a taphole. Prior to the melting in the operation a sealing plug 21 consisting of a frustum of cone in shape is fitted in this taphole to close it. The sealing plug 21 is formed of the same refractory material in quality as the refractory forming the furnace wall or as the wall material 20 forming the wall surrounding the taphole and fitted tightly in the taphole by being coated with a bond such as mortar. In the base part 21a of the sealing plug 21 a cavity 21b is formed, hollowed out to the shape of a hook and designed to engage with the forward end 24a of a rod-shaped setting tool 24. Specifically, the forward end 24a of the setting tool 24 is a plate having the shape of T and the cavity 21b is composed of an inlet part 22a and a deep-grooved part 22b, the inlet part 22a cut out horizontally to a size agreeing with the thickness of the forward end 24a and the deep-grooved part 22b broadened at the lateral sides of the inlet part 22a.

9. 发明专利

JPH0547276B2 失效
公开(公告)号：JPH0547276B2
公开(公告)日：1993-07-16
申请号：JP4405886
申请日：1986-03-03
申请人： TEISAN KK
发明人： CHOKAI MAKOTO , YOSHIDA YOSHIAKI
IPC分类号： B05D7/22

10. 发明专利

JPS6319253B2 失效
公开(公告)号：JPS6319253B2
公开(公告)日：1988-04-21
申请号：JP12204579
申请日：1979-09-25
申请人： TEISAN KK
发明人： CHOKAI MAKOTO , NAKAJIMA SENGEN
IPC分类号： B22C9/02 , B22C9/12

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