GB1207640A - Improvements in vacuum furnaces - Google Patents

Improvements in vacuum furnaces

Info

Publication number
GB1207640A
GB1207640A GB44357/69A GB4435769A GB1207640A GB 1207640 A GB1207640 A GB 1207640A GB 44357/69 A GB44357/69 A GB 44357/69A GB 4435769 A GB4435769 A GB 4435769A GB 1207640 A GB1207640 A GB 1207640A
Authority
GB
United Kingdom
Prior art keywords
furnace
bellows
driving unit
platform
load cells
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.)
Expired
Application number
GB44357/69A
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.)
Leybold Heraeus Verwaltung GmbH
Original Assignee
Leybold Heraeus Verwaltung 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 Leybold Heraeus Verwaltung GmbH filed Critical Leybold Heraeus Verwaltung GmbH
Publication of GB1207640A publication Critical patent/GB1207640A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/56—Other sealings for reciprocating rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/006—Processes utilising sub-atmospheric pressure; Apparatus therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Furnace Details (AREA)
  • Discharge Heating (AREA)
  • Tunnel Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

1,207,640. Feeding vacuum furnaces. LEYBOLD - HERAEUS - VERWALTUNG G.m.b.H. 8 Sept., 1969 [10 Sept., 1968], No. 44357/69. Heading F4B. In a vacuum melting furnace 1 in which a feed column 13 extending through a vacuum seal over the furnace roof carries a progressively melting block, load cells 3 carry a platform 4 supporting a driving unit 10 on columns 5 and 6, and the seal 15 makes a gas-tight joint with a flange 17 on said roof by a bellows 16. Driving unit 10 actuates a screwed spindle 11 engaging a nut 12 on said column 13 carried by a crossmember 9 attached to sleeves 7 and 8 on said columns 5 and 6. Lateral displacement of platform 4 is prevented by guide pins 40 in sockets 41. A pressure equalizing pipe 19 in a C-shaped arm 23 on the furnace body 2 connects the furnace interior with a bellows 18 similar to bellows 16. Friction between seal 15 and column 13 is balanced by a reaction in the driving unit 10 and with the balance between bellows 16 and 18 ensures that the weight registered by load cells 3 comprises only that of the platform and its associated equipment and that of the charge block. In a modification (Fig. 2) the body 2 of the furnace is extended upwardly to form a closed frame (24) with upper ledges (25) from which the load cells support the driving unit. A similar modification (Fig. 3) has the upper part (2a) of the furnace removable by hydraulic motors (27).
GB44357/69A 1968-09-10 1969-09-08 Improvements in vacuum furnaces Expired GB1207640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681758971 DE1758971B1 (en) 1968-09-10 1968-09-10 Vacuum furnace with weight-dependent control of the batch feed

Publications (1)

Publication Number Publication Date
GB1207640A true GB1207640A (en) 1970-10-07

Family

ID=5695315

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44357/69A Expired GB1207640A (en) 1968-09-10 1969-09-08 Improvements in vacuum furnaces

Country Status (5)

Country Link
US (1) US3549773A (en)
JP (1) JPS4810688B1 (en)
DE (1) DE1758971B1 (en)
FR (1) FR2017749A1 (en)
GB (1) GB1207640A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467368A1 (en) * 1979-10-11 1981-04-17 Heurtey Metallurgie LIQUID STEEL POCKET INSTALLATION WITH PROTECTIVE ATMOSPHERE, IN WHICH EACH HEATING ELECTRODE IS DISPOSED IN A SEALED MOBILE HOUSING
DE3722680A1 (en) * 1987-07-09 1989-01-19 Leybold Ag Melting furnace with weight-dependent control of the melting block
GB2497320A (en) 2011-12-06 2013-06-12 Vectura Ltd Checkweigher for blister strips or capsules
EP2928776B1 (en) 2012-12-05 2016-11-02 Molins Plc. Weighing device
CN104964562B (en) * 2015-07-29 2017-01-11 中卫市茂烨冶金有限责任公司 Structure of large-capacity submerged-arc furnace

Also Published As

Publication number Publication date
JPS4810688B1 (en) 1973-04-06
DE1758971B1 (en) 1970-12-23
US3549773A (en) 1970-12-22
FR2017749A1 (en) 1970-05-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees