US3570452A - Drying pasted battery plates - Google Patents

Drying pasted battery plates Download PDF

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Publication number
US3570452A
US3570452A US728459A US3570452DA US3570452A US 3570452 A US3570452 A US 3570452A US 728459 A US728459 A US 728459A US 3570452D A US3570452D A US 3570452DA US 3570452 A US3570452 A US 3570452A
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United States
Prior art keywords
cylinder
plates
conveyor means
chamber
battery plates
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 - Lifetime
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US728459A
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English (en)
Inventor
Eric Goodwin
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.)
Oldham Crompton Batteries Ltd
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Oldham Crompton Batteries Ltd
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Filing date
Publication date
Application filed by Oldham Crompton Batteries Ltd filed Critical Oldham Crompton Batteries Ltd
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Publication of US3570452A publication Critical patent/US3570452A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/14—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts

Definitions

  • McIntosh Attorney-Imirie & Smiley ABSTRACT Pasted battery plates are dried by suspending them from conveyor meansby which they are moved through a rotatable cylinder having vanes projecting from the interior thereof and which create in the cylinder a dust cloud of dry powder, the plates being moved through the cloud so that dust settles evenly on the surfaces of the plates.
  • This invention relates to the production of pasted battery plates and in particular to the drying of the plates.
  • the plates Before full drying of pasted battery plates is effected it is usual for the plates to be subjected to some handling and transportation during which it is desirable that the damp surfaces of one plate do not come into contact with those of another plate. To this end the plates are sometimes suspended by their lugs in slotted baskets which ensure that the plates are separated one from another, for example by about one-half of an inch, and the baskets are loaded on trolleys. This procedure, however, requires the use of a considerable amount of equipment, i.e. baskets and trolleys, which in turn require a considerable amount of space. Further, the loading of the plates into the baskets requires more time than would be needed if the plates could be loaded directly into the trolleys.
  • the combined length of the flash-drying oven and the acid spraying equipment is about four times the length of the pasting equipment and thus results in a pasting machine the length of which is much greater than it needs tobe.
  • the flash-drying oven is expensive to operate because of the large amount of heat energy required, and expensive equipment is required to control the temperature within the oven because overheating, which may occur when only a relatively few plates are in the oven, will be harmful to the plates.
  • SUMMARY According to one aspect of the invention there is provided the method of drying a pasted battery plate which consists of surface drying the plate by applying a dry powder to the damp surfaces of thepasted plate to permit handling and stacking thereof in surface contact with other similarly surface dried plates prior to complete drying of the plates.
  • the powder may be lead powder such as lead oxide.
  • the surface drying may be effected by suspending the plate from a conveyor and moving the plate by the conveyor through a chamber having a powder-laden atmosphere.
  • chamber may be provided with a recirculating flow of powderladen air.
  • the invention also contemplates apparatus for drying pasted battery plates comprising a chamber including end plates each provided with an opening for the passage therethrough of battery plates suspended from conveyor means operable to move the plates'into, through, and out of the chamber, and powder-tossing means operable to create in the chamber a powder-laden atmosphere through which battery plates are moved by the conveyor means so that powder is applied to the damp surfaces of the battery plates.
  • the chamber may comprise a rotatable cylinder and the powder-tossing means consist of vanes extending into the cylinder from the interior wall of the cylinder, and the leading face of each vane considered in the direction of rotation of the cylinder may form an acute angle with the interior wall of the cylinder.
  • the end walls may be stationary and the cylinder by rotatable relative thereto, and the cylinder may be supported for rotation by rollers extending lengthwise thereof.
  • means may be operable to create a slight negative air pressure in the chamber.
  • FIG. 1 is a longitudinal section through apparatus according to the invention.
  • FIG. 2 is an end elevation of FIG. 1,
  • FIG. 3 is a view, similar to FIG. 1, of an alternative form of the apparatus,
  • FIG. 4 is an end view looking in the direction of arrow A, FIG. 3,
  • FIG. 5 is an end view looking in the direction of arrow B, FIG. 3.
  • a battery plate is pasted in the usual manner on a conventional plate pasting machine and the damp surfaces of the plate then have a powder applied thereto.
  • Lead powders will usually be used for surface drying the plate and it has been found that when the damp surfaces of a plate are dusted with lead oxide the powder adheres adequately to the plate.
  • use of lead oxide powder has the advantage that during the formation process which electrochemically converts the lead oxide paste to the active material, that is lead dioxide (positive) and sponge lead (negative), thepowder becomes part of the active mass of the plate.
  • the purposes of the a of powder which has been found to be satisfactory is finely divided silica.
  • Plates so surface dried can immediately be stacked in surface contact with each other without adhesion between the plates. Following the surface drying thereof the plates are transported to a stove in which they are dried for a period of from one to three days under humid conditions to oxidize the major portion of the free lead in the paste and to ensure that the dried paste is crack free.
  • surface drying of the plates be effected by suspending the plates from a conveyor as they leave the pasting equipment and then moving the plates by the conveyor through a chamber having a powder, for example lead oxide, laden atmosphere.
  • the chamber may have a recirculating flow of powder-laden air. By moving the plates through this atmosphere both sides of the plates will be covered with the powder.
  • FIGS. 11 and 2 diagrammatically illustrate one form of apparatus for carrying out the method described above.
  • This apparatus comprises endless conveyor means consisting of parallel chains 1, FIG. 2, from which battery plates 2 having damp pasted surfaces can be suspended vertically by their lugs 3 for movement with the chains 1.
  • a chamber surrounds the chains l for a part of the run thereof, see FIG. 1, and includes end plates 4 each provided with an opening 5 for the passage of the chains 1 and battery plates 2 therethrough.
  • the chamber comprises a rotatable cylinder 6, the cylinder being supported for rotation by rollers 7, FIG. 2, which extend lengthwise of the cylinder and which are supported by a frame 8.
  • the end plates 4 are stationary, being fixed to frame 8, and the cylinder 6 is rotatable relative to the end plates 4 on bearings 9, rotation being continuous from a belt 10 driven by a motor 11, FIG. 2.
  • the chamber has associated therewith powder-tossing means operable to create in the cylinder 6 a powder-laden atmosphere through which plates 2 are moved by the chains 1 so that powder is applied to the damp pasted surfaces of the plates.
  • the powder-tossing means as shown in the drawings consist of vanes 12 which extend into the cylinder 6 from the interior wall 13 of the cylinder.
  • the vanes 12 are inclined away from the direction of rotation of the cylinder 6, that is, as shown in FIG. 2, the leading face of each vane forms an acute angle with the interior wall 13 of the cylinder 6.
  • FIGS. 3 to 5 The alternative embodiment of the apparatus illustrated in FIGS. 3 to 5 is similar to that of FIGS. 1 and 2 but differs therefrom in that the chains 1 are replaced by worm screws 15 supported by bearings 16 on the frame 8 for rotation about their longitudinal axes by a motor 17 and chain or belt 18, FIG. 5, and by the provision in the cylinder 6 of an inverted V- shaped baffle 19.
  • the baffle 19 covers the conveyors l5 and ensures that dust does not fall directly on to the plates 2 but that a sufiicient dust cloud is formed in the cylinder to produce a thin even coating on the plates 2.
  • the apparatus described with reference to FIGS. 1 and 2 is situated so as to follow the pasting machine, not shown, and the pasted plates 2 are transferred from the pasting machine to the chains I automatically so that the pasting and surface drying processes are continuous.
  • Apparatus for drying pasted battery plates comprising:
  • a. unitary conveyor means disposed in side-by-side spaced relation to permit damp pasted battery plates to be suspended therefrom, therebetween, and in spaced relation lengthwise thereof;
  • vanes extending into the cylinder from the interior wall of the cylinder and extending lengthwise of the cylinder in the central region thereof, said vanes being operable to create in the cylinder a powder-laden atmosphere through which battery plates are moved by the conveyor means so that powder is applied to the damp surfaces of the battery plates.
  • Apparatus according to claim 1 including means operable to create a slight negative air pressure in the cylinder.
  • the conveyor means comprises a pair of worm screws supported for rotation about the longitudinal axes thereof, and driving means operable to effect rotation of the worm screws.
  • Apparatus according to claim 5 including baffle means located in the chamber and arranged to cover the worm screws to prevent dust falling directly-on to plates being moved by the worm screws through the chamber.
  • Apparatus according to claim 6, including means operable to create a slight negative air pressure in the chamber.
  • Apparatus according to claim 1 including baffle means located in the chamber and arranged to cover the conveyor means to prevent dust falling directly on to plates being moved by the conveyor means through the cylinder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Battery Electrode And Active Subsutance (AREA)
US728459A 1967-05-31 1968-05-13 Drying pasted battery plates Expired - Lifetime US3570452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25031/67A GB1171676A (en) 1967-05-31 1967-05-31 Improvements in producing pasted battery plates

Publications (1)

Publication Number Publication Date
US3570452A true US3570452A (en) 1971-03-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US728459A Expired - Lifetime US3570452A (en) 1967-05-31 1968-05-13 Drying pasted battery plates

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US (1) US3570452A (en:Method)
BE (1) BE715977A (en:Method)
GB (1) GB1171676A (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116878241A (zh) * 2023-07-17 2023-10-13 南通金三角石墨制造有限公司 一种受潮石墨电极板烘干装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1584956A (en) * 1924-04-10 1926-05-18 Lipsius Samuel Powdering machine
US1876224A (en) * 1930-07-22 1932-09-06 Harding Marston Candy sugaring mechanism
US2620917A (en) * 1949-02-28 1952-12-09 Martin I Friedman Garment handling means
US2703550A (en) * 1952-01-09 1955-03-08 Northwestern Steel & Wire Co Apparatus for descaling and coating wire
US2787978A (en) * 1954-01-28 1957-04-09 Faerber Hans Arthur Machine for coating with sugar jubes, jellies and like confections
US3082737A (en) * 1960-03-17 1963-03-26 Mellen Dusting apparatus
US3390001A (en) * 1964-04-28 1968-06-25 Armour & Co Apparatus and methods for treating cheese with anti-spoilage agents

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1584956A (en) * 1924-04-10 1926-05-18 Lipsius Samuel Powdering machine
US1876224A (en) * 1930-07-22 1932-09-06 Harding Marston Candy sugaring mechanism
US2620917A (en) * 1949-02-28 1952-12-09 Martin I Friedman Garment handling means
US2703550A (en) * 1952-01-09 1955-03-08 Northwestern Steel & Wire Co Apparatus for descaling and coating wire
US2787978A (en) * 1954-01-28 1957-04-09 Faerber Hans Arthur Machine for coating with sugar jubes, jellies and like confections
US3082737A (en) * 1960-03-17 1963-03-26 Mellen Dusting apparatus
US3390001A (en) * 1964-04-28 1968-06-25 Armour & Co Apparatus and methods for treating cheese with anti-spoilage agents

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116878241A (zh) * 2023-07-17 2023-10-13 南通金三角石墨制造有限公司 一种受潮石墨电极板烘干装置

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Publication number Publication date
GB1171676A (en) 1969-11-26
BE715977A (en:Method) 1968-10-16

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