EP0457095B1 - Anschlussvorrichtung einer flachen Belüfterplatte - Google Patents

Anschlussvorrichtung einer flachen Belüfterplatte Download PDF

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Publication number
EP0457095B1
EP0457095B1 EP91106987A EP91106987A EP0457095B1 EP 0457095 B1 EP0457095 B1 EP 0457095B1 EP 91106987 A EP91106987 A EP 91106987A EP 91106987 A EP91106987 A EP 91106987A EP 0457095 B1 EP0457095 B1 EP 0457095B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
ventilating
intermediate piece
aerator
plate
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
EP91106987A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0457095A1 (de
Inventor
Siegfried Egner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT91106987T priority Critical patent/ATE87715T1/de
Publication of EP0457095A1 publication Critical patent/EP0457095A1/de
Application granted granted Critical
Publication of EP0457095B1 publication Critical patent/EP0457095B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23114—Mounting the bubbling devices or the diffusers characterised by the way in which the different elements of the bubbling installation are mounted
    • B01F23/231143—Mounting the bubbling elements or diffusors, e.g. on conduits, using connecting elements; Connections therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23124—Diffusers consisting of flexible porous or perforated material, e.g. fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23125—Diffusers characterised by the way in which they are assembled or mounted; Fabricating the parts of the diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231262—Diffusers characterised by the shape of the diffuser element having disc shape

Definitions

  • the invention relates to a connection of a flat aerator plate equipped with a sleeve arranged in the middle of the surface of the back to a square aerator tube, which has a connection hole for an aerator plate that fits the sleeve.
  • Such aerator plates generally have the shape of an elongated rectangle and have on their upper side a multiplicity of holes or nozzles from which gas, for example air, bubbles for the aeration of water or other liquids.
  • the aerator plates are connected to the sturdy, installed, quadrangular aerator tubes with the top side with the nozzles facing upwards and also fastened.
  • the sleeve is used for connection and fastening.
  • an externally threaded nipple is provided in the upward-facing connecting wall of the aerator tube for each aerator plate, onto which the relevant aerator plate is screwed with its sleeve.
  • the aerator plate must be rotated around the axis of the sleeve. The result of this is that enough space must be kept free on both sides for each aerator plate so that the rotary movement can be carried out. This in turn hampers a possibly desirable arrangement of the aerator plates in an aerator system.
  • the object of the invention is to design a connection of the type mentioned at the outset so that the aerator plates can also be arranged very closely to one another.
  • the invention is characterized in that the sleeve is aligned in alignment with the connection hole and is fixed to the aerator tube by a bracket encircling the aerator tube together with the aerator plate.
  • the aerator plate can remain in its later swivel position during assembly, so it does not require a free swivel space for assembly. This in turn makes it possible for aerator plates to be lined up next to one another on one or more aerator tubes at the same height.
  • the invention is also easy to implement. It does not require a threaded nipple in the aerator tube, a simple, smooth connection hole is sufficient. Only the flat web, the intermediate piece, the bracket and nuts are additionally required, that is to say small parts, the additional expense of which is justified simply by the ease of assembly which can be achieved with the invention, quite apart from the expansion of the arrangement options.
  • a further development of the invention which is characterized by a particularly solid and simple structural design, is characterized in that a tubular intermediate piece is provided which has an annular projection in the longitudinal center and shoulders perpendicular to the longitudinal axis on both sides, that one end of the intermediate piece has an in the internal thread of the sleeve has a suitable external thread, that the other end of the intermediate piece is smooth on the outside, that a stable flat web is provided, which has a smooth connection hole in the middle, which fits onto the threaded end of the intermediate piece and is on both sides with a protrusion longer than the width the connecting wall of the relevant aerator tube and holes in the projections has that the flat web is inserted on the threaded end of the intermediate piece and by screwing the intermediate piece into the sleeve is attached plane-parallel to the aerator plate, that in the connecting wall a flush in the free projection of the threaded sleeve fitting smooth connection hole is provided, into which the smooth end of the intermediate piece is inserted appropriately,
  • the desired seal is favored in that a sealing ring is provided which is plugged onto the smooth end of the intermediate piece and is arranged between the projection of the intermediate piece and the connecting wall.
  • the assembly is facilitated in that the projection of the intermediate piece is designed as a hexagon on the outside.
  • a very simple embodiment of the bracket is characterized in that the free ends of the bracket are threaded and can be braced by the nuts attached to the flat web in the direction of pressing the sleeve against the aerator tube.
  • a preferred development which requires very little effort for assembly, is characterized in that the sleeve at its free end has a centering piece that fits flush into the connection hole, that the sleeve has a shoulder on the front side that sits on the aerator tube that the The sleeve is part of a longitudinal web of the aerator plate, which has a slot on each side of the sleeve, through which a tensionable bracket, which is formed from a flat strip length and is looped around the aerator tube, is inserted.
  • two brackets formed from flat strip lengths preferably flat steel strip lengths, are used, which can be tightened with tensioning devices, a strap or a loop, which are conventional for such flat steel strips. All that is required is the matching slots in the aerator plate.
  • the invention is advantageously applicable to an aerator device with a plurality of aerator plates which are arranged in rows with connections according to the invention on one or more aerator tubes.
  • an aerator plate can be arranged within the pivoting range of an adjacent aerator plate, the pivoting range being defined by the largest circle which the aerator plate in question describes when rotating about the axis of its sleeve.
  • the application of the invention is not restricted to such aerator devices.
  • the aerator tube 1 is square in cross-section and laid with the connecting wall 2 pointing horizontally upwards.
  • the connecting wall 2 In the connecting wall 2, several smooth connecting holes, such as the connecting hole 3, are drilled in the longitudinal center.
  • this connection hole 3 is the smooth end 4 of an intermediate piece generally designated 5.
  • the intermediate piece 5 is tubular and has in its longitudinal center an annular projection 6 which is designed as a hexagon 7 on the outside.
  • the projection 6 has shoulders 9 and 10 perpendicular to the central axis 8 of the intermediate piece 5 on both sides.
  • Between the shoulder 10 and the connecting wall 2 is a sealing ring 11 made of elastic material.
  • the other end 13 of the intermediate piece 5 is provided with an external thread 14.
  • connection hole 16 in its center, which fits over the threaded end 13.
  • the flat web 15 is inserted with the connection hole 16 onto the threaded end 13.
  • the flat web projects over the width on both sides according to double arrow 17 of the aerator tube 1.
  • Holes 20, 21 are provided in the protrusions 18, 19 formed on both sides. Through these holes, the free ends of a U-shaped bracket 22 are inserted, which fits flush over the ventilation tube 1 and surrounds it.
  • the free ends of the bracket 22 are provided with an external thread and two nuts 23, 24 are screwed onto these, which clamp the bracket and thus the flat web and thereby the intermediate piece 5 tightly against the aerator tube 1.
  • the sleeve 26, provided with an internal thread 25, of an aerator plate 27 is screwed tightly.
  • the aerator plate 27 consists of two plane-parallel spaced rectangular plates and a peripheral edge, so that a cuboid box is formed.
  • the sleeve 26 is attached, which opens into the interior of the aerator plate 27, so that the interior of the aerator plate 27 communicates with the interior of the aerator tube 1 through the intermediate piece 5 and the sleeve 26.
  • Aerator nozzles for example aerator nozzles 36, 37, 38, are embedded in the front plate distributed over the entire surface. Pressurized gas from the aerator tube 1 flows into the interior of the aerator plate 27 and from there through the nozzles 36 to 38 upwards, for example into the surrounding liquid which is to be aerated.
  • the nuts 23, 24 are loosened, to the extent that there is no tension between the intermediate piece 5 and the aerator tube 1.
  • the intermediate piece 5 is now rotated by attaching a wrench to the hexagon 7, as a result of which the threaded end 13 is screwed into the sleeve 26 of the aerator plate 27 held above it during assembly or is correspondingly unscrewed during disassembly.
  • the adapter 5 is clamped against the aerator tube 1 during assembly by tightening the nuts 23, 24.
  • aerator plate does not have to be rotated during assembly and disassembly.
  • These aerator plates are arranged at the same height so close to each other on a common aerator tube 1 that the aerator plate 40 protrudes into the swivel area 42 of the adjacent aerator plate 27, which is indicated by the dot-dash line.
  • the pivoting area 42 characterizes the space required by the aerator plate 27 when it has to be pivoted about the axis 8 for mounting or dismounting, as in the prior art. This is not possible if the adjacent aerator plates protrude into this swivel range in the narrow arrangement shown in FIG.
  • FIGS. 7, 8 and 9, 54 denotes a square aerator tube which has a circular connection hole 52 in its connection wall 64.
  • an aerator plate designated, which has the outline of an elongated rectangle.
  • This aerator plate has on its rear side a longitudinal web extending in the middle parallel to the narrow sides, into which a sleeve 50 is integrated.
  • This sleeve 50 has at its free end a narrowed centering 51 which fits flush into the connection hole 52. Due to the narrowed diameter of the centering piece, the sleeve has a shoulder 53 on the end face, which sits on the connecting wall 64 of the aerator tube 54 with the interposition of a sealing ring 62.
  • the centering piece 51 projects into the connecting hole 52 in a centering manner.
  • a sleeve 57, 58 is inserted on both sides of the sleeve 50, which passes through.
  • a flat steel strip length is inserted through each of the slots, which wraps around the aerator tube 54 and is connected at both ends to an annularly closed bracket 59, 60 by an associated tensioning device 61, 65, which is easily accessible from the outside, and is pulled tight.
  • the aerator plate 56 is fixed tightly on the aerator tube 54 by the two brackets and at the same time the sleeve 50 is pressed tightly with its shoulder 53 and thus sealed against the connecting wall 64 with the interposition of the sealing ring 62.
  • the aerator plate 56 consists of a stable support plate 70, which is profiled on its side facing the viewer in FIG. 7, whereby the longitudinal web with the sleeve 50 and a receptacle for a clamping ring 71 is formed.
  • the profiled edge 72 of a membrane body 73 is fixed with the clamping ring 71.
  • the membrane body consists of rubber-elastic material, preferably of elastic plastic, and has a flat, flexible membrane 74, which is loose at rest on the flat upper side 75 of the support plate 70 abuts and has ventilation slots, such as the ventilation slots 76, 77.
  • the interior of the aerator tube 54 communicates via the channel 78 of the sleeve 50, which passes completely through the support plate 70, with the membrane 74 and an intermediate space which forms between the membrane 74 and the upper side 75 when the membrane is pressed up by gas pressure during operation.
  • the ventilation slots 76, 77 ... then spread and the gas can escape through these ventilation slots.
  • FIG. 5 can also be advantageously implemented for the exemplary embodiment according to FIGS. 7 to 9.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Connection Of Plates (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
EP91106987A 1990-05-12 1991-04-30 Anschlussvorrichtung einer flachen Belüfterplatte Expired - Lifetime EP0457095B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91106987T ATE87715T1 (de) 1990-05-12 1991-04-30 Anschlussvorrichtung einer flachen beluefterplatte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9005423U 1990-05-12
DE9005423U DE9005423U1 (de) 1990-05-12 1990-05-12 Vorrichtung zum Anschluß einer flachen Belüfterplatte

Publications (2)

Publication Number Publication Date
EP0457095A1 EP0457095A1 (de) 1991-11-21
EP0457095B1 true EP0457095B1 (de) 1993-03-31

Family

ID=6853755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106987A Expired - Lifetime EP0457095B1 (de) 1990-05-12 1991-04-30 Anschlussvorrichtung einer flachen Belüfterplatte

Country Status (3)

Country Link
EP (1) EP0457095B1 (da)
AT (1) ATE87715T1 (da)
DE (2) DE9005423U1 (da)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1014391B (de) * 1950-02-25 1957-08-22 Illinois Tool Works Einsteckhalter
NL7308591A (da) * 1973-06-20 1974-12-24
JPS52124569A (en) * 1976-04-10 1977-10-19 Yoshida Kogyo Kk Ttshaped connection structure of members

Also Published As

Publication number Publication date
EP0457095A1 (de) 1991-11-21
DE9005423U1 (de) 1990-07-19
ATE87715T1 (de) 1993-04-15
DE59100069D1 (de) 1993-05-06

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