EP0700358A1 - Distributeur monotubulaire a double voie - Google Patents

Distributeur monotubulaire a double voie

Info

Publication number
EP0700358A1
EP0700358A1 EP95914326A EP95914326A EP0700358A1 EP 0700358 A1 EP0700358 A1 EP 0700358A1 EP 95914326 A EP95914326 A EP 95914326A EP 95914326 A EP95914326 A EP 95914326A EP 0700358 A1 EP0700358 A1 EP 0700358A1
Authority
EP
European Patent Office
Prior art keywords
channel
plug
connection
flow
flow channel
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.)
Withdrawn
Application number
EP95914326A
Other languages
German (de)
English (en)
Inventor
Wolfgang Rumpf
Georg Stapp
Paul Gerhard Dellmann
Harald Friedrich
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.)
Reimelt Dietrich KG
Original Assignee
Reimelt Dietrich KG
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 Reimelt Dietrich KG filed Critical Reimelt Dietrich KG
Publication of EP0700358A1 publication Critical patent/EP0700358A1/fr
Withdrawn legal-status Critical Current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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • F16K11/0853—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug having all the connecting conduits situated in a single plane perpendicular to the axis of the plug
    • 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
    • B65G53/34—Details
    • B65G53/52—Adaptations of pipes or tubes
    • B65G53/56—Switches

Definitions

  • the invention relates to a single-pipe, two-way distributor with a housing which has a plug chamber into which a first connection duct, a second connection duct and a third connection duct open and in which a plug, which has a flow duct, is rotatably arranged, the first , the second and the third connecting channel open radially into the plug chamber, a first circumferential angle between the first connecting channel and the second connecting channel is equal to a second circumferential angle between the first connecting channel and the third connecting channel, a third circumferential angle between the ends of the flow channel is the same as the first and the second circumferential angle and the flow channel and the connection channels are provided with the same cross section.
  • Such distributors are widely used in systems for the pneumatic conveying of bulk material in order to control the flow path of the bulk material.
  • the chick's flow channel connects the first connection channel with the second connection channel.
  • the flow channel connects the first connection channel to the third connection channel.
  • Such distributors are also referred to as pipe switches or rotary valves.
  • Pipe switches also exist in an embodiment with two flow channels, the first flow channel being responsible for the connection between the first and the second connection channel and the second flow channel being responsible for the connection between the first and the third connection channel.
  • Such two-pipe distributors can indeed be designed with regard to the flow characteristics in such a way that the differences in flow behavior between the two different positions of the plug can be kept relatively small.
  • the plug only has to be pivoted through a smaller angle, so that a correspondingly simpler drive is required. Because of the necessity of two flow channels, such a pipe switch, however, requires a considerable size.
  • DE 40 09 218 AI shows a rotary slide switch in which an adapter ring is provided in order to avoid shocks during the transition from the connecting ducts into the flow duct, which can be rotated both with respect to the housing and with respect to the plug.
  • An additional component is required here, which complicates the structure and makes the production correspondingly expensive.
  • the plug has a flow channel that connects the first connection channel to the second connection channel in a first position, and an impact surface that forms a boundary surface of the plug room in a second position, which in this case forms the first connection channel with the third connection channel connects.
  • DE-AS 12 18 827 shows a single-pipe two-way distributor of the type mentioned at the outset, which is particularly suitable for is used in concrete delivery lines or blow-off lines.
  • a similar pipe switch is also known from DE-OS 21 48 577.
  • the flow channel is formed by a pipe which has an arcuate section to which two straight pipe sections are attached.
  • the straight pipe sections open radially into the outer circumference of the plug.
  • DE-PS 511 267 describes a reusable valve for hydraulic systems, in which a plug with a curved tubular flow path can either connect two of three connecting pieces to one another or shut off all three connections.
  • the three connections open radially into the chick room. As with the previously discussed documents, they are designed as straight pipe sockets.
  • the three last-mentioned distributors offer the same flow characteristics regardless of the plug position because they are constructed symmetrically to a plane that passes through the central axis of the one connecting piece and the axis of rotation of the plug.
  • this has the disadvantage that such a distributor can often not be retrofitted in existing systems, or only at relatively great expense. Branches can often be found here, in which a branch pipe branches off from an essentially straight pipe run at an angle of 35 ° or 45 °.
  • a relatively complicated additional fitting for the individual connections would be necessary, which allows the distributor to be used in existing systems.
  • it is easily conceivable that such a fitting will again adversely affect the flow characteristics in the individual directions and, moreover, will require a considerable amount of space.
  • the object of the invention is to make the flow characteristic largely independent of the position of the plug and / or the flow direction, even in the case of a distributor which is suitable for branching off from an essentially straight line line.
  • the flow characteristic is designed independently of the position of the plug.
  • the structure of the distributor is largely symmetrical with regard to the connection channels or their mouth into the plug room.
  • the flow behavior practically does not change if the direction of flow is changed.
  • the term "radial mouth” can basically only be applied to a linear connecting channel.
  • the term “radial opening” therefore refers to the central axis of the channel.
  • the end of the flow channel, which was connected to the second connection channel coincides with the first connection channel, while the other end of the flow channel, which was previously aligned with the first connection channel , is now brought into overlap with the third connection channel. Due to the equality of the angles, the flow behavior through the distributor does not change in this embodiment.
  • the branch angle can be kept relatively small. Thanks to the In the course of at least one of the connecting channels between a connecting flange and its mouth into the plug area, the distributor can be designed so that its connecting pieces have the same orientation as that of conventional distributors, pipe switches or
  • Rotary slide switch is known, namely with parallel or on a line or axis connecting flanges on the first and second connecting channels and with a connecting flange angled at 45 ° or 35 ° or even a smaller angle on the third connecting channel.
  • the arch shape of at least one connection channel nevertheless allows all connection channels to open radially into the plug area and to keep the necessary external dimensions small.
  • the ends of the flow channel are aligned radially.
  • the flow channel and the connecting channels can be provided with the same cross section. The transition between the connecting channels and the flow channel then takes place over a smooth surface which is only interrupted by a small gap between the plug and the housing, but not by a kink or any other geometric shape.
  • the walls of the flow channel and the connecting channels preferably run parallel to a central axis, at least in the region of the transition between plug and housing. This can be used to ensure that no cross-sectional change occurred during the transition.
  • the plug or the flow channel can be flowed through in the same way as the rest of the pipeline.
  • the flow channel preferably runs in the form of an arc from one end to the other.
  • the connection of the first and third connection channels results in a significantly lower flow resistance.
  • the choice of an arc in turn avoids kinks and edges, so that the flow channel does not build up any appreciable flow resistance despite a change in direction.
  • the arc is preferably part of a circle.
  • this configuration basically only applies to a linen-shaped channel.
  • this statement applies only to the central axis, which runs in the form of an arc of a circle.
  • the curvature is constant in a circular arc. This keeps the flow resistance low. There is little, if any, turbulence that leads to an increase in flow resistance. In most cases, however, the flow channel can flow through practically as smoothly as a straight piece of pipe.
  • the first, second and third circumferential angles preferably have a size of 150 ° and the first and second connecting channels form an arc over an angle of 15 ° between their connecting flange and their mouth.
  • a 45 ° branch for the third channel can be realized in a simple manner, which branch is connected to the first connection channel by switching the plug by 150 °.
  • the plug has a carrier in which a tube is installed as a flow channel. In this case the tube can be made relatively thin-walled. The mechanical support function is carried out by the wearer. This configuration allows a relatively simple and therefore inexpensive construction.
  • a sealing device is provided in the housing for each connection channel, which cooperates with the carrier.
  • This embodiment shows the advantage that the radial opening of the flow channel offers. When the plug moves, the seals are only run over by an edge that has an angle close to 90 °.
  • the plug is formed by a tube having the flow channel.
  • this tube must be stored in some way, for example with the help of one or two lids.
  • the support function by a carrier is omitted here. Nevertheless, a relatively lightweight chick can also be realized with this configuration.
  • the tube can be cast, for example.
  • the tube preferably has a tube wall thickening at its ends. This thickening of the tube wall leads to a correspondingly enlarged area, which leads to an improved seal between the plug and the housing in the region of the ends of the flow channel.
  • the tube has a sealing arrangement at each end, which cooperates with the housing. If the sealing arrangement is not arranged in the housing but in the plug, one does not need more three sealing arrangements for three connecting channels, but only two sealing arrangements for the ends of the flow channel. This reduces the effort. Since all the connecting channels open radially into the plug area, each sealing arrangement is only exposed to edges when the plug moves which form an angle in the range of 90 °. This angle is "obtuse" in all cases, so that the sealing arrangement is not significantly stressed here.
  • FIG. 1 shows a first embodiment of a distributor with a first position of its plug
  • FIG. 2 shows the embodiment of FIG. 1 with the chick in its second position
  • Fig. 4 shows a second embodiment of the distributor with the chick in its first position
  • Fig. 5 shows the second embodiment of the distributor with the chick in its second position.
  • a tube switch 1 designed as a one-pipe, two-way distributor has a housing 2 and a plug 3, which is rotatably mounted in a plug chamber 4.
  • the chick room 4 has a circular cross section.
  • a flow channel 14 is provided in the plug 3.
  • first connection channel 5 In the housing 2 there is a first connection channel 5, a second connection channel 6 and a third connection channel 7 intended.
  • Each connection channel has an imaginary axis or center line 8, 9, 10.
  • the first connecting channel 5 has a connecting flange 11
  • the second connecting channel 6 has a connecting flange 12
  • the third connecting channel 7 has a connecting flange 13. All three connecting channels 5, 6, 7 open radially into the plug space 4.
  • parallel walls as used here, only apply if the channel is linear, ie has no extension.
  • the term "radially opening” therefore means that the axes 8, 9, 10 are perpendicular to the tangent 15 to the plug 3 in the transition between the connecting channel and
  • Flow channel 14 is. This is shown as an example for the second connecting channel 6.
  • the first connection channel 5 is in the circumferential direction from the second connection channel 6 as far as from the third connection channel 7. This distance is at a circumferential angle a between the first connection channel 5 and the second connection channel 6 or a circumferential angle b between the first connection channel 5 and the third Connection channel 7 shown.
  • the flow channel 14 has two ends 19, 20 which are separated from one another by the same circumferential angle.
  • the flow channel 14 also opens radially at its ends 19, 20, ie the center line 18 at the ends 19, 20 is perpendicular to the tangent at the transition point.
  • the flow channel is curved in an arcuate manner between the two ends 19, 20.
  • the center line 18 forms part of a circular line. If the flow channel 14 has a circular cross section, the flow channel 14 thus forms part of a torus.
  • a sealing arrangement 21, 22, 23 is provided for each connecting channel 5, 6, 7, which acts on the peripheral surface of the plug 3.
  • the plug has a carrier 24 in which a bent tube 25 is inserted.
  • the first connecting channel 5 and the second connecting channel 6 are also curved in an arcuate manner between their connecting flange 11, 12 and their mouth into the plug chamber 4.
  • the arc angle is 15 ° in both cases.
  • FIG. 3 The geometrical dimensions are shown in FIG. 3.
  • the pipe switch 1 is shown schematically.
  • the flow channel 14 is shown in the position according to FIG. 1 with solid lines.
  • the flow channel 14 is shown in the position according to FIG. 2 with an interrupted line.
  • the arc angles c, d can be seen here, by means of which the first and the second connecting channels 5, 6 are curved.
  • the flow channel 14 is therefore brought into a position (FIG. 2) that deviates 45 ° from the first position according to FIG. 1.
  • FIG. 3 the connecting channels 5, 6, 7 and the flow channel 14 (1) and 14 (2) are shown in a line.
  • the nominal diameter 40 of the first connection channel 5 is exaggerated.
  • the opening cross section is therefore on one secant in the housing. The same applies to the other connection channels 6 and 7.
  • An inscribed circle which affects all secants defines at the points of contact with the
  • Secants are the points between which the angles a - f are to be measured.
  • connection channels 1, 2 and 3 there is no change in cross-section during the transition.
  • arch shape of the flow channel 14 there is always a freely flowable cross section available. Due to the arc shape of the flow channel 14 and the first and second connection channels 5, 6, there is also no appreciably increased flow resistance.
  • the chick has essentially changed in the embodiment according to FIGS. 4 and 5.
  • the chick now has, apart from fastening parts not shown in detail, only a tube 26 with thickened wall sections 27 at the ends.
  • a sealing arrangement 28, 29 is provided for each end, which interacts with the housing 3 on the boundary wall 30 of the plug chamber 4.
  • this arrangement has the advantage that the sealing arrangements 28, 29 only have to sweep over edges that form an obtuse angle , because the connection channels 5, 6, 7 all open radially into the chick room 4.
  • the remaining parts correspond to those of FIGS. 1 and 2 and are therefore provided with the same reference numerals.
  • the connecting channels 5, 6, 7 are formed by tubes or tube sections 31, 32, 33 which are inserted into the housing, the connecting channels 5, 6, 7 are in the Ausge ⁇ 4 and 5 formed by housing sections 34, 35, 36, which can be produced for example together with the housing 2 'by casting.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

La présente invention concerne un distributeur (1) monotubulaire à double voie, avec une cage (2) comprenant une chambre de boisseau (4) dans laquelle débouchent un premier, un deuxième et un troisième conduit de raccordement, et dans laquelle un boisseau (3) doté d'un conduit d'écoulement (14) est monté pivotant. Dans un distributeur de ce type, la courbe caractéristique du flux peut être configurée de façon quasiment indépendante de la position du boisseau et/ou du sens d'écoulement. A cet effet, le premier, le deuxième et le troisième conduit d'écoulement (5, 6, 7) débouchent radialement dans la chambre de boisseau (4). Un premier angle périphérique entre le premier conduit de raccordement (5) et le deuxième conduit de raccordement (6) est égal au second angle périphérique entre le premier (5) et le troisième (7) conduit de raccordement, et un troisième angle périphérique entre les extrémités (19, 20) du conduit d'écoulement (14) est égal aux premier et deuxième angles périphériques.
EP95914326A 1994-04-02 1995-03-29 Distributeur monotubulaire a double voie Withdrawn EP0700358A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4411529 1994-04-02
DE19944411529 DE4411529C2 (de) 1994-04-02 1994-04-02 Einrohr-Zweiwege-Verteiler
PCT/EP1995/001175 WO1995026921A1 (fr) 1994-04-02 1995-03-29 Distributeur monotubulaire a double voie

Publications (1)

Publication Number Publication Date
EP0700358A1 true EP0700358A1 (fr) 1996-03-13

Family

ID=6514536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95914326A Withdrawn EP0700358A1 (fr) 1994-04-02 1995-03-29 Distributeur monotubulaire a double voie

Country Status (3)

Country Link
EP (1) EP0700358A1 (fr)
DE (1) DE4411529C2 (fr)
WO (1) WO1995026921A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702215A1 (de) * 1997-01-23 1998-07-30 Buehler Gmbh Rohrweiche
DE19804115A1 (de) * 1998-02-03 1999-08-05 Behr Gmbh & Co Klimatisierungseinrichtung für Kraftfahrzeuge
DE10045880B4 (de) * 2000-09-14 2004-02-05 Ballard Power Systems Ag Ventil
CN101230929B (zh) * 2008-02-29 2010-04-21 合肥通用机械研究院 两位三通粉体换向阀

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE457667C (de) * 1928-03-21 Polysius Fa G Gehaeuse fuer ein schwenkbares Rohr zum Verteilen des Foerderguts bei mit Pressluft betriebenen Massengutfoerderern
DE511267C (de) * 1930-03-20 1930-10-28 Escher Wyss Maschf Ag Mehrweghahn fuer hydraulische Anlagen
DE1218827B (de) * 1961-10-11 1966-06-08 Carl Hamacher Kommanditgesells Rohrweiche, insbesondere fuer Betonfoerderleitungen
DE1750910A1 (de) * 1968-06-18 1971-04-22 Walter Stegmann Dreiwegehahn mit U-Kueken
DE2148557A1 (de) * 1971-09-29 1973-05-03 Heinrich Jacob Rohrweiche
DE3122195A1 (de) * 1981-06-04 1982-12-30 Elektror Karl W. Müller GmbH & Co, 7300 Esslingen Seitenkanalverdichter insbesondere fuer pneumatische foerderanlagen, z.b. rohrpostanlagen
DE3915125A1 (de) * 1989-05-09 1990-11-22 Avt Anlagen Verfahrenstech Drehschieberweiche
DE3940668C1 (en) * 1989-12-08 1990-09-27 Waeschle Maschinenfabrik Gmbh, 7980 Ravensburg, De Deflector valve for pneumatic conveyor - has part-cylindrical valve body inside cylindrical housing
DE4009218A1 (de) * 1990-03-22 1991-09-26 Motan Verfahrenstechnik Drehschieberweiche
DE4028582A1 (de) * 1990-09-08 1992-03-12 Motan Verfahrenstechnik Rohrweiche

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9526921A1 *

Also Published As

Publication number Publication date
DE4411529C2 (de) 1996-07-25
WO1995026921A1 (fr) 1995-10-12
DE4411529A1 (de) 1995-10-05

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