GB732793A - Improvements in tunnel kilns - Google Patents

Improvements in tunnel kilns

Info

Publication number
GB732793A
GB732793A GB1679352A GB1679352A GB732793A GB 732793 A GB732793 A GB 732793A GB 1679352 A GB1679352 A GB 1679352A GB 1679352 A GB1679352 A GB 1679352A GB 732793 A GB732793 A GB 732793A
Authority
GB
United Kingdom
Prior art keywords
kiln
cam
follower
cams
shaft
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
GB1679352A
Inventor
William Henry Burton
John Stuart Boulton
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.)
Pilkington S Tiles Ltd
Original Assignee
Pilkington S Tiles Ltd
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 Pilkington S Tiles Ltd filed Critical Pilkington S Tiles Ltd
Priority to GB1679352A priority Critical patent/GB732793A/en
Publication of GB732793A publication Critical patent/GB732793A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
    • F27B9/202—Conveyor mechanisms therefor
    • F27B9/205—Conveyor mechanisms therefor having excentrics or lever arms
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/062—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated
    • F27B9/063—Resistor heating, e.g. with resistors also emitting IR rays

Abstract

732,793. Tunnel kilns. PILKINGTON'S TILES, Ltd. July 3, 1953 [July 4, 1952], No 16793/53. Class 51 (2). [Also in Group XXX] In a tunnel kiln utilizing a "walking beam" type of conveyer for the passage of articles therethrough, the "walking beam" is raised by unidirectionally rotating lifting cams, the traversing movement being controlled by a cam follower or followers on the "beam" engaged by a unidirectionally rotating control cam or cams, and the "beam" carries a central portion built up on refactory material, the normal level thereof coinciding with the level of two outer members forming with the upper surface of the central portion, the base of the kiln. The kiln shown is formed of a refractory material A, A<SP>1</SP>, and is provided with ducts a to house electrical heating elements a<SP>1</SP>. The kiln base is formed by outer members A<SP>2</SP> and a portion B which is carried by a "walking beam" B<SP>1</SP>. The "beam" is supported at each end of the kiln on lifting cams C mounted on shafts c, which are caused to rotate via worm gearing c<SP>3</SP> and a shaft c<SP>6</SP> disposed along the length of the kiln by an electric motor c<SP>5</SP>. Mounted on the shaft c at the feed end of the kiln is a cam C<SP>1</SP> adapted for engagement with a follower c<SP>1</SP> secured to the "beam". Both cams C raise and lower the "beam" and are in contact with it continuously, such that were it not for the control cam C<SP>1</SP> and follower c<SP>1</SP> the "beam" would undergo continuous forward movement. The control cam C<SP>1</SP> ensures that the "beam" is rested and moved rearwardly against the rotation of the lifting cam C at predetermined time intervals. Positive forward movement of the "beam" may be ensured by the provision of another cam-C<SP>2</SP> on the shaft c at the feed end of the kiln adapted to co-act with a follower c<SP>1</SP> secured to the "beam". The beam b<SP>1</SP> is provided with fins b3 projecting into sand seals a<SP>3</SP>, and is stiffened by fins b<SP>1</SP> and, at each end, by I-section members B2, one section member and the beam carrying pairs of horizontal guide rollers b' engaging vertical rollers b<SP>6</SP>, whereby any warping &c. of the beam may be compensated. Slits may be provided in the upper flange of B1 for expansion &c. and one or more vents a<SP>5</SP> may be provided for release of any gases generated in the kiln.
GB1679352A 1952-07-04 1952-07-04 Improvements in tunnel kilns Expired GB732793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1679352A GB732793A (en) 1952-07-04 1952-07-04 Improvements in tunnel kilns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1679352A GB732793A (en) 1952-07-04 1952-07-04 Improvements in tunnel kilns

Publications (1)

Publication Number Publication Date
GB732793A true GB732793A (en) 1955-06-29

Family

ID=10083763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1679352A Expired GB732793A (en) 1952-07-04 1952-07-04 Improvements in tunnel kilns

Country Status (1)

Country Link
GB (1) GB732793A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213452A (en) * 1988-01-11 1989-08-16 Excel Corp Walking beam conveyor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213452A (en) * 1988-01-11 1989-08-16 Excel Corp Walking beam conveyor
GB2213452B (en) * 1988-01-11 1992-10-21 Excel Corp A step by step conveyor.

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