US3774972A - Pneumatic conveyer chute - Google Patents

Pneumatic conveyer chute Download PDF

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Publication number
US3774972A
US3774972A US00138530A US3774972DA US3774972A US 3774972 A US3774972 A US 3774972A US 00138530 A US00138530 A US 00138530A US 3774972D A US3774972D A US 3774972DA US 3774972 A US3774972 A US 3774972A
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US
United States
Prior art keywords
channel
partition panel
profile
channel portion
side walls
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
Application number
US00138530A
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English (en)
Inventor
J Grapengiesser
Albenhausen H Klein
Hess A Van
G Siefert
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.)
Claudius Peters AG
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Claudius Peters AG
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
Priority claimed from DE19702021493 external-priority patent/DE2021493C3/de
Application filed by Claudius Peters AG filed Critical Claudius Peters AG
Application granted granted Critical
Publication of US3774972A publication Critical patent/US3774972A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/16—Gas pressure systems operating with fluidisation of the materials
    • B65G53/18—Gas pressure systems operating with fluidisation of the materials through a porous wall
    • B65G53/20—Gas pressure systems operating with fluidisation of the materials through a porous wall of an air slide, e.g. a trough

Definitions

  • ABSTRACT This invention concerns a conveyor chute comprising a housing, an upper box section and a lower box section, separated by an air permeable partition whose edges are clamped together with and between outwardly projected flanges of the upper and lower box sections.
  • the opposite flanges forming a U form body and prestrained into a straddled position of its U legs in crosssection prior to'assembly, whereby after one edge of the partition is inserted into thisopen U body, the opposite flanges are simply brought together with the opposite edge of the partition between them, and clamped into. position;
  • the spring clamps optionally to provide the spring clamps as H bars, with one side thereof acting as the clamping means of the partition and of the flanges, and the opposite outward side functioning as a spreadenwhen a wedge is driven there into.
  • FIG. 1 is a perspective view of a basic embodiment of the invention in its simplest form, employing outwardly projecting flanges functioning simultaneously as the partition bearing means and means to hold the partition securely and in a leak-proof position;
  • FIG. 2 is a perspective view similar to that of FIG. 1
  • FIG. 3 is an optional variation of the embodiment shown in FIG. 1, having the flanges longitudinally separated, whereby one set of the flanges, the upper or the lower, simultaneously function as spring clamps, integral with the respective walls of the chute;
  • FIG. 4 is a view similar to that of FIG. 3, showing the flanges longitudinallyseparated and provided with external spring clamps, holding the two sets of flanges with the edges of the partition between them clamped into position.
  • FIG. 5 is a view similar to that of FIG. 4, showing a modification of the clamping member
  • FIG. 6 is a modification of the embodiment of FIG. 4, showing .an intermediate insert between the outer flanges provided with clamping means to join them into position for welding without any subsequent adjusting;
  • FIG. 7 is a view similar to that of FIG. 1, showing the cross-sectional shape thereof in a different geometrical form to emphasize that a particular shape configuration is not essential to the spirit and scope of this invention;
  • FIG. 8 is an optional improvement over the embodiment shown in FIGS. 1 to 7, showing the chute box and partition in perspective view in partial assembly;
  • FIG. 9 is a view same as that of FIG. 8, showing the assembly completed; only one of different shapes of clamps is shown in FIG. 9 it is obvious and anticipated that different type shapes of the clamping means may be sutstituted; I
  • FIG. 10 is a view similar to that of FIG. 3, showing a different embodiment of the clamping means
  • FIGS. 11, 12 and 13 show in perspective and geometric views different embodiments of chute connections similar to FIG. 2.
  • FIG. 1 shows a one piece construction of the conveyor chute.
  • the opposing walls have, between the upper and lower box section area, a U form like outward projection comprising sides 2,3, and connection 4, which are crimped together, so that at locations 5 there exists a space, which after insertion of the air permeable partition, is increased to effect positive clamping of said partition.
  • Said partition may, for example, be constructed of a perforated sheet metal plate superimposed by a permeable textile material. It should be understood, that said partition may also comprise, for example, a permeable ceramic or synthetic plastic sheet like material, or a stiff, sheet-like air permeable textile material.
  • the outwardly formed flanges of the two box sections, together with the edges of the air permeable partition, 7 are clamped together by a U form like clamp rail.
  • a U form like clamp rail To secure the position of the clamp rail against accidental shock forces, it may be held in place, for example, by bolts or screws, which serve no function in clamping. Said bolts or screws may, however, optionally aid in the clamping function.
  • the clamp rail may,.for example, comprise a tube slotted on one side.
  • the width of the slot may be narrower than the combined thickness of the two flanges of the upper and lower box sections plus the thickness of the air permeable partition, so that the spring action of the slotted tube will effect the proper clamping pressure when assembled; or said tube may be crimped together at assembly.
  • the upper and lower box sections of the conveyor chute are formed as a single piece.
  • a U form like projection is formed outwardly, whose sides are the flanges, which serve to clamp the edges of the air permeable partition.
  • the air permeable partition may be inserted longitudinally in such arrangement; the opening of the U form like projection may be narrower than the thickness of the air permeable partition and is spread apart by suitable means, such as a wedge, while said' partition is inserted, and then released, to clamp said partition securely; or the U form like projection may be wide enough to receive said partition and then is crimped together by suitable means such as pliers to clamp said partition leak proof and securely.
  • the crosssection of the U form like flanges of either the upper or the lower box section envelops the single flange of the respective opposite box section and the edges of the air permeable partition.
  • the U form like flanges may be so constructed and preformed to clamp the edgesof said partition and the respective single flange with a springlike action or may be crimped together after insertion of said partition and the respective single flange to clamp them in a leak proof and secure manner.
  • the flanges of the upper and lower box section and the edges of the air permeable partition are held together and clamped securely by a spring clamp rail of the following construction: the profile of the clamp rail resembles an H.” One open side of said rail receives the flanges of the upper and lower box sections and the edges of the air permeable partition. Into the opposite open side of the H section a spreader bar is inserted, which narrows the space on the opposite side and effects the clamping.
  • a clamping rail of this latter design is easier to assemble than those, with only a singleclamping slot, because after inserting said flanges and edges of said partition to be clamped into one side of the H section clamp rail, the spreading member can be inserted simply between the opposite sides of the H section, and thus positively clamping said flanges.
  • the clamp rail is made up of shorter sections, clamping said flanges in the same manner as above.
  • the H type clamp rail may be constructed of several pieces where the center section is rigidly connected with one side of the H section and where the other long'side of the H section is connected hingelike, and where the center section is of suitable strength to sustain the tension which develops during the clamping.
  • the invention also includes an embodiment where the opposing edges of the air permeable partition are clamped in U form like rails, which are welded together at assembly with the flange edges of the upper and lower box sections.
  • the configurations of the three elements, namely the U form like rails and the upper and lower flanges are so selected and designed that only one welding seam on each side of the conveyor chute is required to unite all three elements to form a secure and leak proof assembly.
  • the U form like rail may be formed to have one edge which projects outwardly to match up with the flanged edges of the upper and lower box sections to be joined in welding.
  • the flange edge of the lower box section is preferably formed with an extended width and after insertion of the air permeable partition is crimped into a groove of the U form like rails. Said rails and the flanges of the upper and lower box section are shaped to coincide and cause proper alignment at assembly without further adjustment and fitting.
  • the pneumatic conveyor chute according to the invention does not only have the advantage of easy assembly and installation, but also the methods of manufacture are simple and economical.
  • the premise for the manufacture of the pneumatic conveyor chute is economically long sections according to this invention is that adjacent sections which may be cut to length at time of installation may be connected without flanges by means of suitably grooved connectors.
  • These frame like connectors may be constructed in every embodiment shown in the manner illustrated, for instance, in FIG. 2.
  • a specific optional construction available is shown in FIGS. II-IV of the German patent application P 20 07824.4.
  • Said frame like connectors contain grooves in opposing sides to receive the trough ends of the upper and lower box sections, their flanges and also the end projections of the lower air permeable partition.
  • the conveyor upper and lower trough sections may be connected to said connector by means of adhesives for example.
  • said adjacent conveyor trough sections may be connected with each other by said connectors and in addition by other positive means, for example, overlapping flanges which will relieve the stresses on said connectors.
  • said connectors may be produced of comparatively soft synthetic materials, which for reason of their softness effect a leak proof and tight connection of the adjacent said conveyor trough ends.
  • flange connections and clamps may be applied in the construction of a pneumatic conveyor chute, according to the invention.
  • flange connection and clamping according to FIGS. 1 and 2 may be applied to one side
  • clamping and connecting according to FIGS. 5 and 6 may be applied to the other side of the conveyor trough, or a customary bolt type assembly and connection method may be used on one or the other side.
  • the flange 2 and 3 according to FIG. 1, formed on one side only, may be opened in such a manner, that the walls may be angularly disposed to each other, for easy insertion of partition 6 and 7 of FIG. 2, and flanges 11 and 12 on the opposite side may be formed according to FIG. 5.
  • flanges 2 and 3 When bending the sides of the two box sections together, flanges 2 and 3 are brought together, effecting the desired clamping. After this, the open side can be fastened together for example according to FIGS. 4 and 5 or by other known methods, such as by intermittent welding or bolting.
  • FIG. 7 shows an embodiment of the invention where the conveyor chute is of essentially circular configuration and where U form like outward projections on opposing sides are means to hold the clamp said air permeable partition. It can be readily understood that the outwardly U like projection may also be constructed as shown in FIGS. 3,4, 5, & 6 to hold said air permeable partition.
  • FIGS. 8 and 9 illustrate an embodiment of the conveyor chute according to this invention where the upper and lower sector are of one piece, open on one side, construction, but where the walls of the chute are angularly disposed to each other, as shown in FIG. 8, for easy insertion of said air permeable partition, and where after insertion of said partition said open side is closed, clamping said partition securely in place as shown in FIG. 9.
  • FIGS. 8-9 may also be in accordance with FIGS. 3, 5, and 6.
  • FIG. 10 shows still another embodiment of the invention where the assembly of the conveyor chute is effected by a snap lock action of one of the flanges of the conveyor chute.
  • An air conveyor channel assembly comprising in combination:
  • a caisson-like, closed channel profile of substantially rectangular cross section which includes two side walls, a top wall and a bottom wall;
  • an air-permeable, horizontal partition panel so arranged inside the channel profile that its longitudinal edge portions are received inside the groove profiles, thereby subdividing the channel space into an upper channel compartment and a lower channel compartment;
  • An air conveyor channel assembly comprising in combination:
  • a lower channel portion in the shape of an upright U, facing the upper channel portion and cooperating with the latter to define a substantially rectangular, closed channel profile
  • an air permeable, horizontal partition panel so arranged between the upper and lower channel portions that its longitudinal edge portions form an overlap with the side walls of the channel portions, thereby subdividing the overall channel space into the upper channel compartment inside the upper channel portion and a lower channel compartment inside the lower channel portion;
  • a flange interlock between the cooperating side walls of the upper and lower channel portions in the area of the partition panel overlap portions which includes, on each side of the channel profile:
  • the C-shaped profile portion including, in succession, a. first horizontal leg which extends from the side wall, an outer vertical leg, and a second horizontal leg, the latter being so arranged that the partition panel overlap portion and the flange of the first cooperating channel portion side wall are received between the two legs of the C-shaped profile portion with a vertical clamping action against said overlap portion and flange which provides a substantially evenly distributed clamping pressure along the length of the channel profile.
  • An air conveyor channel assembly comprising in combination:
  • a lower channel portion in the shape of an upright U, facing the upper channel portion and cooperating with the latter to define a substantially rectangular, closed channel profile
  • an air-permeable, horizontal partition panel so arranged between the upper and lower channel portions that its longitudinal edge portions form an overlap with the side walls of the channel portions, thereby subdividing the overall channel space into an upper channel compartment inside the upper channel portion and a lower channel compartment inside the lower channel portion;
  • a clamping member extending along the length of the conveyor channel and engaging the flanges of cooperating channel portion side walls in the manner of a continuous C-clamp, thereby exerting a vertical clamping action against said flanges and against the partition panel overlap portions received therebetween which provides a substantially evenly distributed clamping pressure along the length of the conveyor channel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chutes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US00138530A 1970-05-02 1971-04-29 Pneumatic conveyer chute Expired - Lifetime US3774972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702021493 DE2021493C3 (de) 1970-05-02 Förderrinne zum pneumatischen Fördern von Schüttgut

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US3774972A true US3774972A (en) 1973-11-27

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BR (1) BR7102608D0 (enExample)
FR (1) FR2088277B1 (enExample)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099749A (en) * 1974-04-08 1978-07-11 Air-O-Mulder B.V. Coupling sleeve
US4710068A (en) * 1986-09-15 1987-12-01 Reynolds Metals Company Air conveyor
US4744702A (en) * 1987-01-12 1988-05-17 Simplimatic Engineering Co. Modular air conveyor construction
US4773796A (en) * 1982-05-27 1988-09-27 Strehlow Robert W Air slide conveyer
US4799830A (en) * 1986-08-07 1989-01-24 Free Flow Packaging Corporation Air conveyor dispensing and recycling system
US5209387A (en) * 1990-09-20 1993-05-11 Eastman Kodak Company Gas film conveyor for elongated strips of web material
RU2251523C1 (ru) * 2003-08-04 2005-05-10 Закрытое акционерное общество "ТоксСофт" Секция аэрогравитационного желоба для транспортировки и распределения сыпучего материала
US20050098016A1 (en) * 2001-07-18 2005-05-12 Piergiorgio Benuzzi Air cushion table and conveyor unit
WO2016162599A1 (en) * 2015-04-07 2016-10-13 Outotec (Finland) Oy Air slide conveyor and use of an air slide conveyor
US10351361B2 (en) * 2015-07-16 2019-07-16 Flsmidth A/S Ship loading system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA879190B (en) * 1987-12-07 1988-06-06 Fuller Company Apparatus for conveying hot finely divided material

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL83798C (enExample) *
GB190220324A (en) * 1902-09-18 1903-01-29 Louis Mannstaedt Improvements in Conduits for Electric Cables.
US727786A (en) * 1902-07-09 1903-05-12 Thomas Henry Grace Mailing-tube.
US1762766A (en) * 1928-03-24 1930-06-10 Altmar Steel Products Company Pipe sleeve
US1930285A (en) * 1929-05-27 1933-10-10 Roy H Robinson Built up metal tube, frame and skeletonized metal member of high strength weight, and method of forming same
US1979804A (en) * 1932-02-16 1934-11-06 Nat Electric Prod Corp Multiple passage wiring duct
US2527394A (en) * 1949-04-05 1950-10-24 Huron Portland Cement Company Side take-off for air conveyers
US3035868A (en) * 1960-08-15 1962-05-22 Simon Ltd Henry Method of and apparatus for the conveying of powdered or pulverulent dry material in bulk
FR1538294A (fr) * 1966-10-04 1968-08-30 Linde Maskiner Ab Pièce de serrage et procédé de fabrication de cette pièce
US3480331A (en) * 1968-04-03 1969-11-25 Halliburton Co Fluidizing conveyor apparatus
US3512805A (en) * 1968-08-16 1970-05-19 Charles B Glatz Means for joining two conduits

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR977382A (fr) * 1948-12-17 1951-03-30 Huron Portland Cement Company Procédé et dispositif de transport de matériaux
FR1104537A (fr) * 1954-05-13 1955-11-21 Perfectionnements aux aéro-glissières

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL83798C (enExample) *
US727786A (en) * 1902-07-09 1903-05-12 Thomas Henry Grace Mailing-tube.
GB190220324A (en) * 1902-09-18 1903-01-29 Louis Mannstaedt Improvements in Conduits for Electric Cables.
US1762766A (en) * 1928-03-24 1930-06-10 Altmar Steel Products Company Pipe sleeve
US1930285A (en) * 1929-05-27 1933-10-10 Roy H Robinson Built up metal tube, frame and skeletonized metal member of high strength weight, and method of forming same
US1979804A (en) * 1932-02-16 1934-11-06 Nat Electric Prod Corp Multiple passage wiring duct
US2527394A (en) * 1949-04-05 1950-10-24 Huron Portland Cement Company Side take-off for air conveyers
US3035868A (en) * 1960-08-15 1962-05-22 Simon Ltd Henry Method of and apparatus for the conveying of powdered or pulverulent dry material in bulk
FR1538294A (fr) * 1966-10-04 1968-08-30 Linde Maskiner Ab Pièce de serrage et procédé de fabrication de cette pièce
US3480331A (en) * 1968-04-03 1969-11-25 Halliburton Co Fluidizing conveyor apparatus
US3512805A (en) * 1968-08-16 1970-05-19 Charles B Glatz Means for joining two conduits

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099749A (en) * 1974-04-08 1978-07-11 Air-O-Mulder B.V. Coupling sleeve
US4773796A (en) * 1982-05-27 1988-09-27 Strehlow Robert W Air slide conveyer
US4799830A (en) * 1986-08-07 1989-01-24 Free Flow Packaging Corporation Air conveyor dispensing and recycling system
US4710068A (en) * 1986-09-15 1987-12-01 Reynolds Metals Company Air conveyor
US4744702A (en) * 1987-01-12 1988-05-17 Simplimatic Engineering Co. Modular air conveyor construction
US5209387A (en) * 1990-09-20 1993-05-11 Eastman Kodak Company Gas film conveyor for elongated strips of web material
US20050098016A1 (en) * 2001-07-18 2005-05-12 Piergiorgio Benuzzi Air cushion table and conveyor unit
RU2251523C1 (ru) * 2003-08-04 2005-05-10 Закрытое акционерное общество "ТоксСофт" Секция аэрогравитационного желоба для транспортировки и распределения сыпучего материала
WO2016162599A1 (en) * 2015-04-07 2016-10-13 Outotec (Finland) Oy Air slide conveyor and use of an air slide conveyor
US10351361B2 (en) * 2015-07-16 2019-07-16 Flsmidth A/S Ship loading system

Also Published As

Publication number Publication date
FR2088277B1 (enExample) 1976-06-11
DE2021493A1 (de) 1971-11-11
BR7102608D0 (pt) 1973-05-08
FR2088277A1 (enExample) 1972-01-07

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