WO2000076890A1 - Element coude - Google Patents

Element coude Download PDF

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Publication number
WO2000076890A1
WO2000076890A1 PCT/DE2000/001828 DE0001828W WO0076890A1 WO 2000076890 A1 WO2000076890 A1 WO 2000076890A1 DE 0001828 W DE0001828 W DE 0001828W WO 0076890 A1 WO0076890 A1 WO 0076890A1
Authority
WO
WIPO (PCT)
Prior art keywords
widening
connection
inlet
cross
element according
Prior art date
Application number
PCT/DE2000/001828
Other languages
German (de)
English (en)
Inventor
Karl-Heinz Stanelle
Original Assignee
Ipd Automation Gmbh
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 Ipd Automation Gmbh filed Critical Ipd Automation Gmbh
Priority to AU61477/00A priority Critical patent/AU6147700A/en
Priority to DE10081601T priority patent/DE10081601D2/de
Publication of WO2000076890A1 publication Critical patent/WO2000076890A1/fr

Links

Classifications

    • 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
    • B65G53/523—Wear protection
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L43/00—Bends; Siphons

Definitions

  • the invention relates to a manifold element for use in pneumatic, free-flowing material conveying systems.
  • Manifold elements are subject to increased abrasion, which significantly shortens their service life.
  • the bulge is arched with a thickened baffle opposite the inlet connection.
  • the baffle is inclined in such a way that the material to be conveyed, reflecting on it and falling back into the bulge, is executed towards the outlet nozzle and a migration extension present there, which protrudes into the bulge and forms an obstacle.
  • This obstacle is cut like a cross-section and is therefore exposed to considerable stress, ie considerable wear.
  • increased abrasion can be observed, which can lead to premature destruction of the entire elbow element.
  • a manifold element is known from DE-C 1 096 830, in which the bulge merges smoothly and smoothly into the outlet connection on the outlet side. The deposits in the bulge can therefore flow off easily and then no longer protect.
  • the bulge can be designed with a stepless transition or with a spherical cap-shaped design and, accordingly, with an angular transition to the pipe socket attached at the end.
  • the effect of these bulges as a pocket is also limited as a result.
  • the invention has for its object to provide a manifold element of the type mentioned with optimal properties in terms of its technical use and in terms of its service life.
  • the manifold element according to the invention is characterized by particular advantages.
  • the connection area between the pocket bottom and the outlet nozzle has a greater wall thickness than the remaining lateral surface area of the bulge and is designed as a sack-like pocket.
  • the bulge in the area adjoining the sack-like pocket is designed approximately as a flattened cone or as a flattened truncated cone. Further details can be found in the features of claim 1.
  • the fall lines of the pocket which lie in the plane of the flow deflection, are thus straight.
  • the avoidance of curved drop lines, in particular in the area of the wall area adjoining the inlet connector, enables extremely low abrasion forces due to the material to be conveyed flowing into the bulge.
  • the falling line opposite the inlet connection and lying in the plane of the flow deflection is also oriented such that the material to be conveyed reflecting it is directed back into the bulge and not in the direction of the outlet connection.
  • a uniform filling of the interior of the bulge with material to be conveyed is achieved, thereby preventing the filling process from starting from the bag-like pocket adjacent to the outlet nozzle and the remaining wall areas of the bulge being exposed to the material flow for a longer period of time without protection.
  • the bulge can be provided with a flat at its end pointing away from the pipe bend.
  • the bulge in the plane of the flow diversion can have a cross section such as that of a slightly oblique cone or a slightly oblique truncated cone.
  • the central axis of this oblique cone or truncated cone has a smaller angle with the central axis of the inlet nozzle than with the longitudinal axis of the outlet nozzle.
  • the measure of the angle difference is a measure of the skewing of the cone or truncated cone.
  • the bottom of the pocket or bulge preferably has an opening, the cross-section of which is smaller than the base area of the entire bulge.
  • connection options for pipes to be connected at the end are the subject of further subclaims.
  • FIG. 1 shows a longitudinal section through the elbow element according to the invention with screwed-on flange flange ends
  • Fig. 3 is a side view of the manifold element with screwed connection parts and
  • An enlargement 10 is present between a tubular inlet connector 12 and a likewise tubular outlet connector 14. This widening 10 does not touch the inner, more curved bend region of the pipe bend 16 connecting the inlet connector 12 and the outlet connector 14. The widening 10 also sits like a backpack on the outer, less curved half 17 of the pipe bend 16. This dash-dotted half 17 is no longer present and forms the transition area between pipe bend 16 and widening 10 (FIGS. 1, 2).
  • the direction of flow through the elbow element 20 can be seen by arrows 21 marked on the outside thereof. This is necessary to ensure the correct installation of the elbow element 20 on pipelines in terms of flow technology.
  • the widening 10 has a cross section that approximates a slightly oblique truncated cone 22.
  • the central axis 24 of this truncated cone 22 forms an obtuse angle 26 with the longitudinal axis 28 of the inlet connector 12, which is slightly less than 135 ° (degrees).
  • this central axis 24 encloses an obtuse angle 32 which is slightly larger than 135 ° (degrees).
  • the truncated cone 22 terminates at its projecting end with an essentially flat cover 34.
  • the lateral surface 36 of the truncated cone 22 and the ceiling 34 have an essentially constant thickness 38.
  • the connection area between the lateral surface 36 and the ceiling 34 has an internal fillet 40.
  • the bottom 42 of the truncated cone 22 is designed as a ring disk which is only partially present and which is present in the region of the outlet connector 14.
  • the space enclosed by the floor 42 with the adjacent jacket 36 within the widening 10 forms a sack-like pocket 44 in the region of the outlet nozzle 14, which in the direction of the opposite region of the truncated cone 22, which adjoins the inlet nozzle 12 in FIG Width zero decreases.
  • the transition between the bottom 42 and the outlet connection 14 is designed as a truncated cone-shaped thickening 54.
  • the two lateral surfaces 56, 58 of the truncated cone-shaped thickening 54 form the inner surface of the outlet connector 14 and the inner surface of the bottom 42.
  • a thickening 60 is present in the area of the fillets 48, 50, which covers the lower end region there of the jacket 36. As already stated, there is no longer any bottom 42 in the area of this thickening 60.
  • the longitudinal axis 28 of the inlet nozzle 12 abuts the falling line 72 of the truncated cone 22 on the lateral surface 36.
  • the longitudinal axis 28 includes an angle 74 - in FIG. 1 upper angle 74 and a lower angle 76 - with the falling line 72.
  • the upper angle 74 is larger than the lower angle
  • the material to be conveyed which flows through the inlet connection 12 into the elbow element 20, will deflect in the region of the point 80 towards - in FIG. 1 - up and down, and the flow cross section thereby widen.
  • the material to be conveyed will be distributed approximately halfway in the drawing above and below. The more the material to be conveyed is distributed in the region of the widening 10, the more flow energy the material to be conveyed loses when it flows through the elbow element 20.
  • the flow arrow 86 will run in a correspondingly straight line.
  • the stress for such flow arrows on the lateral surface 36 is therefore desirable low.
  • a deflection of the flow takes place in the area of the ceiling 34, which is indicated by a flow arrow 88.
  • a further deflection takes place with the flow arrow 90 in the area of the transition between the ceiling 34 and the subsequent jacket 36.
  • the material to be conveyed flowing along the flow arrow 90 comes into abutment with material to be conveyed, which has bounced along the longitudinal axis 28 directly onto the opposite inside of the jacket 36 and bounced off this inner surface 92 (arrow 94). In this way there is a gentle load on the
  • Inner surface 96 of the jacket 36 takes place, which is present in FIG. 1 at the top of the truncated cone 22 and thus from the region of the entry of the conveyed material into the widening 10.
  • the interior 98 of the widening 10 there is therefore an increased accumulation of conveyed material above the dividing line 82.
  • material to be conveyed is also introduced into the sack-like pocket 44, so that the interior 98 of the widening 10 is more or less simultaneously filled with the material to be conveyed. The more evenly the material to be conveyed is distributed and accumulates in the widening 10, the more gentle is the impact and frictional load acting on the jacket 36 and the ceiling 34.
  • the elbow element 20 has a cross section shown in FIG. 2 in the plane perpendicular to the flow plane, which contains the central axis 24.
  • the widening 10 then follows approximately in the region of the central plane.
  • the widening 10 has between the lower half pipe bend 16 and the upper ceiling 34 a slightly curved jacket 100 which approximates the arc shape of an ellipse.
  • the maximum width 102 of this cross section is larger than the diameter of the pipeline and thus larger than the maximum diameter of Inlet nozzle 12 and outlet nozzle 14.
  • the height 104 extending in the direction of the central axis 24 is approximately 1.5 times as large as that maximum width 102.
  • FIG. 2 decreases in the direction of the upper and lower rectilinear jacket regions shown in FIG. 1, so that one directed transversely to the slightly elliptical jacket shape 100, which is shown in FIG. 2 Bulge 106, 108 (Fig. 4) is present.
  • FIG. 4 Bulge 106, 108 (Fig. 4) is present.
  • FIG. 4 In the area of the upper and lower straight fall lines shown in FIG. 1, there is an area with a flat outer contour 110, as shown in FIG. 4.
  • the area of this outer contour 110 is given approximately over the width of the inlet connector 12 or outlet connector 14.
  • inlet pipe 12 and outlet pipe 14 are of the same size in diameter. However, it is also possible to design these nozzles 12, 14 to be of different sizes. In particular, the outlet connection 14 could be made larger, in order to enable the throughput of conveyed material to pass through the outlet connection 14 as much as through the inlet connection 12 despite the reduction in the flow speed occurring in the region of the widening 10.
  • a connecting part 120 is screwed into the inlet connection 12 and in the same way into the outlet connection 14.
  • This connecting part 120 has a pipe section 122 which is provided with an external thread 124.
  • the connecting part 120 can thereby be screwed into the internal thread 123 of the connecting piece 12 or 14.
  • the pipe section 122 has a flange 125 through which a pipe flange, not shown in the drawing, can be screwed by means of screws 126.
  • a circumferential O-ring 130 represents a seal between the elbow element 20 and the connecting part 120.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Semiconductor Lasers (AREA)
  • Bipolar Transistors (AREA)

Abstract

L'invention concerne un élément coudé (20) à utiliser dans des installations pneumatique servant à transporter un matériau coulant. Ledit élément coudé présente une partie élargie (10) comportant une poche (44) qui, à la manière d'un sac à dos, repose sur un tuyau coudé (16) reliant le manchon d'entrée (12) au manchon de sortie (14). La partie élargie (10) présente, dans le plan de la dérivation de l'écoulement, une section correspondant sensiblement à celle d'un cône ou d'un tronc de cône (22) avec des lignes de pente (72) droites, et, dans le plan perpendiculaire au plan de la dérivation de l'écoulement et renfermant l'axe central (23) de la partie élargie (10), une section correspondant sensiblement à celle d'une ellipse (100), dans sa zone de section centrale. La zone de raccordement à ladite poche (44) présente une épaisseur de paroi (54) plus grande que celle du reste de l'enveloppe de la partie élargie (10) et elle présente une partie arrondie (48, 50) dont l'épaisseur de paroi est plus grande que celle de la zone restante de l'enveloppe (36).
PCT/DE2000/001828 1999-06-09 2000-06-08 Element coude WO2000076890A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU61477/00A AU6147700A (en) 1999-06-09 2000-06-08 Elbow element
DE10081601T DE10081601D2 (de) 1999-06-09 2000-06-08 Krümmerelement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29909984.9 1999-06-09
DE29909984U DE29909984U1 (de) 1999-06-09 1999-06-09 Krümmerelement

Publications (1)

Publication Number Publication Date
WO2000076890A1 true WO2000076890A1 (fr) 2000-12-21

Family

ID=8074509

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/001828 WO2000076890A1 (fr) 1999-06-09 2000-06-08 Element coude

Country Status (3)

Country Link
AU (1) AU6147700A (fr)
DE (2) DE29909984U1 (fr)
WO (1) WO2000076890A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11759460B2 (en) * 2020-08-14 2023-09-19 Devie Medical Gmbh Method of local antibiotic treatment of infective endocarditis

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112061790B (zh) * 2020-08-04 2022-03-18 中国科学院山西煤炭化学研究所 一种用于气力输送的抗磨损弯管

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE501591C (de) 1930-07-04 Pneumatic Conveyance & Extract Rohrkruemmer fuer pneumatische Foerderanlagen
DE1096830B (de) 1956-01-23 1961-01-05 Franz Josef Sellmeier Dipl Ing Rohrkruemmer fuer Foerderleitungen von Blas- und Spuelgut
EP0111589B1 (fr) 1982-12-23 1986-05-28 Karl-Heinz Stanelle Elément coudé
US5060984A (en) * 1991-01-22 1991-10-29 Hammertek Corporation Short radius, low wear elbow
DE4112423A1 (de) * 1991-04-16 1992-10-22 Waeschle Maschf Gmbh 90(grad)-umlenkstueck fuer pneumatische foerderleitungen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE501591C (de) 1930-07-04 Pneumatic Conveyance & Extract Rohrkruemmer fuer pneumatische Foerderanlagen
DE1096830B (de) 1956-01-23 1961-01-05 Franz Josef Sellmeier Dipl Ing Rohrkruemmer fuer Foerderleitungen von Blas- und Spuelgut
EP0111589B1 (fr) 1982-12-23 1986-05-28 Karl-Heinz Stanelle Elément coudé
US5060984A (en) * 1991-01-22 1991-10-29 Hammertek Corporation Short radius, low wear elbow
DE4112423A1 (de) * 1991-04-16 1992-10-22 Waeschle Maschf Gmbh 90(grad)-umlenkstueck fuer pneumatische foerderleitungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11759460B2 (en) * 2020-08-14 2023-09-19 Devie Medical Gmbh Method of local antibiotic treatment of infective endocarditis

Also Published As

Publication number Publication date
DE10081601D2 (de) 2002-05-29
DE29909984U1 (de) 1999-08-05
AU6147700A (en) 2001-01-02

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