EP2508266A1 - Agencement rotatif de buses - Google Patents

Agencement rotatif de buses Download PDF

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Publication number
EP2508266A1
EP2508266A1 EP12159003A EP12159003A EP2508266A1 EP 2508266 A1 EP2508266 A1 EP 2508266A1 EP 12159003 A EP12159003 A EP 12159003A EP 12159003 A EP12159003 A EP 12159003A EP 2508266 A1 EP2508266 A1 EP 2508266A1
Authority
EP
European Patent Office
Prior art keywords
turbine wheel
shaft
housing
bearing
bore
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Withdrawn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
EP12159003A
Other languages
German (de)
English (en)
Inventor
Hermann Lange
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.)
Lechler GmbH
Original Assignee
Lechler 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 Lechler GmbH filed Critical Lechler GmbH
Publication of EP2508266A1 publication Critical patent/EP2508266A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/002—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements comprising a moving member supported by a fluid cushion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/0409—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements
    • B05B3/0418—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine
    • B05B3/0422—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements
    • B05B3/0427—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements the outlet elements being directly attached to the rotor or being an integral part of it
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/0409—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements
    • B05B3/0418—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine
    • B05B3/0422—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements
    • B05B3/045—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet with moving, e.g. rotating, outlet elements comprising a liquid driven rotor, e.g. a turbine with rotating outlet elements with automatic means for regulating the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/042—Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/048—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like having a flow conduit with, immediately behind the outlet orifice, an elongated cross section, e.g. of oval or elliptic form, of which the major axis is perpendicular to the plane of the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening

Definitions

  • the invention relates to a rotating nozzle arrangement having a housing fixed relative to a connecting line and a rotating nozzle head, wherein the nozzle head has at least one outlet opening and wherein the nozzle head is connected to a shaft which projects into the housing and the non-rotatably arranged with a in the housing Turbine is connected.
  • a rotating nozzle assembly in which a fixed housing and a rotating nozzle head are provided.
  • the housing has a swirl insert and a turbine wheel rigidly connected to a shaft.
  • a fluid-pressure-controlled friction brake is provided between the shaft and the housing, which causes an increased braking effect with increasing water pressure.
  • the liquid pressure controlled friction brake is realized in the form of a thrust bearing. With increasing fluid pressure pushes the shaft with increased force on the thrust bearing surface of the thrust bearing and thereby causes a higher frictional force.
  • an improved rotating nozzle assembly is provided.
  • a rotating nozzle assembly is provided with a relative to a connecting line fixed housing and a rotating nozzle head, wherein the nozzle head has at least one outlet opening and wherein the nozzle head is pressure-resistant connected to a shaft which projects into the housing and rotatably with a in the Housing arranged turbine wheel is connected, wherein the turbine wheel and the shaft each having a central bore through to provide in the housing a first, via the turbine wheel leading flow path and a second, via the respective center holes from the connecting line to the nozzle head leading flow path.
  • a controlled or slowly rotating rotating nozzle arrangement is provided, since not all fluid flowing out of the connecting line is guided via the turbine wheel. Rather, a portion of the fluid is passed through the flow path leading through the respective center bores, which thus does not pass the turbine wheel and, as a result, does not contribute to a rotation of the nozzle head. Even with increasing water pressure, the rotational speed of the nozzle head thus does not continue to increase, but remains within a comparatively narrow speed range.
  • the rotating nozzle arrangement according to the invention is thus dispensed with a liquid-pressure-controlled friction brake to keep the speed even with increasing water pressure within a defined range.
  • a swirl insert is provided in the housing upstream of the turbine wheel, wherein the swirl insert is provided with a continuous central bore.
  • the swirl insert By providing a swirl insert, an effective flow of the turbine wheel can be achieved. Also, the swirl insert has a through center bore to provide the second flow path that does not pass over the turbine wheel and thus does not contribute to rotation of the nozzle head.
  • the swirl insert is fixed relative to the housing and is provided, for example, with flow channels arranged obliquely to the central longitudinal axis of the nozzle arrangement, which are designed in particular as oblique holes in a disk.
  • the shaft has a radially outwardly projecting shoulder within the housing, which forms a bearing surface of a thrust bearing, wherein the shaft is provided immediately downstream of the shoulder with at least one radial bore, which opens into a bearing surface adjacent to the bearing surface of the gap ,
  • the bearing surface of the thrust bearing immediately after the pressurization of the nozzle assembly with the flowing through the central bore of the shaft fluid can be applied.
  • the thrust bearing is thereby fluid lubricated and causes no significant friction.
  • the rotating nozzle assembly according to the invention can thereby be provided with bearing materials, which are prescribed for example in the food industry, and yet be designed extremely low wear.
  • the bearing surface of the shoulder adjacent to a radial bearing surface of the shaft In this way, a combined axial / radial bearing can be provided, wherein then both the thrust bearing surface and the radial bearing surface are acted upon immediately after pressurization of the nozzle assembly with fluid from the radial bore in the shaft. Both the thrust bearing and the radial bearing are thus fluid lubricated immediately after pressurization of the nozzle assembly and substantially frictionless.
  • the housing is provided with a bearing bush, which forms a bearing surface of the thrust bearing and a bearing surface of the radial bearing, wherein the bearing bush adjacent to the bearing surface of the thrust bearing in the bearing surface of the radial bearing has a circumferential lubricating pocket and wherein the lubricating pocket with the radial bore in the shaft is in fluid communication.
  • the combined thrust bearing and radial bearing which is formed by the bearing bush, thus acts not as a fluid pressure controlled friction brake, but immediately after pressurization of the nozzle assembly provides a liquid film both in the thrust bearing and in the radial bearing for a substantially frictionless running, regardless of the upcoming fluid pressure.
  • the turbine wheel is provided with a centrally arranged bearing part.
  • the shaft can be stored once at the entrance to the housing and once on the turbine wheel and thus within the housing.
  • a pin or a bush is provided on the turbine wheel. Since the bearing part is located on the turbine wheel within the housing, this is inevitably acted upon by liquid and thus always fluid lubricated and thus substantially frictionless.
  • a swirl insert is provided in the housing upstream of the turbine wheel, wherein the swirl insert has a centrally arranged bearing part, which cooperates with the bearing part of the turbine wheel.
  • the turbine wheel can be mounted on the swirl insert, which is arranged fixed relative to the housing.
  • the nozzle assembly according to the invention thus comes with few components.
  • the bearing part is formed on the swirl insert as a pin which extends into the trained as a bearing bush bearing part on the turbine wheel inside.
  • the pin is provided with a continuous central bore.
  • the shaft is downstream of the turbine wheel and within the housing with at least one radial bore provided to guide via the turbine wheel led fluid into the central bore of the shaft.
  • a low flow resistance of the nozzle arrangement according to the invention is achieved.
  • a plurality of radial bores are provided in the shaft downstream of the turbine wheel.
  • the turbine wheel has at least one drive bore running obliquely to a central longitudinal axis of the nozzle arrangement, which has at least one, extending in the circumferential direction extension at its upstream end.
  • an improved flow of the turbine wheel can be achieved and the energy of the liquid flowing through the swirl insert can be transmitted to the turbine wheel more effectively.
  • the extension or bulge can be formed, for example, by using an end mill, which is used for the production of the drive bores, at a different angle of attack, ie an angle of attack that is not or less strongly inclined with respect to the central longitudinal axis, again into the upstream section of the Drill hole is immersed. This creates a one-sided, funnel-shaped widening on the inflow side of the drive bore. Seen in the circumferential direction, such an extension can be provided on both sides of the drive bore.
  • FIG. 1 shows a partially sectioned view of a rotating nozzle assembly 10 according to the invention.
  • the nozzle assembly 10 has a relative to a merely schematically indicated connecting line 12 fixed housing 14, which consists of an upper Half 16 and a lower half 18 consists.
  • the connection line 12 is screwed into the upper half 16 of the housing 14.
  • the lower half 18 is bolted to the upper half 16.
  • a shaft 20 is rotatably mounted and at one, the housing 14 opposite free end of the shaft 20 is a nozzle head 22 with a total of three individual nozzles 24, 26 and 28 is provided.
  • Each of the nozzles 24, 26, 28 defines an exit opening through which fluid to be sprayed is discharged.
  • the nozzles 24, 26, 28 are each, see also Fig. 2 , formed as a flat jet nozzles and thereby generate a Sprühf kauer, which extends substantially over 360 ° in the plane of the Fig. 1 extends.
  • the nozzle assembly 10 can thereby be used for example as a tank cleaning nozzle.
  • the nozzle head 22 is screwed onto the free end of the shaft 20 and secured in position on the shaft 20 by means of a locking pin 30.
  • the shaft 20 extends into the housing 14 and is rotatably mounted in the housing 14 by means of a bearing bush 32, which consists for example of Teflon.
  • the bushing 32 is provided on its, the shaft 20 facing the inside with a circumferential lubricating pocket 34 which communicates with a radially extending bore 36 in the shaft 20 in fluid communication.
  • this fluid is also forced in through the radial bore 36 in the shaft 20 and into the lubricating pocket 34.
  • the liquid then penetrates further into a radial bearing gap 38 and into an axial bearing gap 40.
  • the radial bearing gap 38 is formed between an inner radial bearing surface of the bearing bush 32 and an outer periphery of the shaft 20.
  • the thrust bearing 40 is between an in Fig. 1 overhead thrust bearing surface of the bearing bush 32 and a in Fig. 1 below lying axial bearing surface of a lying within the housing 14, extending in the radial direction shoulder 42 of the shaft 20 is formed. Both the radial bearing gap 38 and the axial bearing gap 40 are supplied with liquid immediately after liquid has passed from the connecting line 12 into the interior of the shaft 20. Both the thrust bearing surface and the radial bearing surface are thus fluid-lubricated and the shaft 20 is thereby stored in the bearing bush 32 substantially frictionless.
  • the shaft 20 is also mounted in the housing 14 by means of a further bearing bush 44, which is provided in an integrally connected to the shaft 20 turbine wheel 46.
  • the bushing 44 receives a journal 48 of a swirl insert 50 which is fixedly secured to the housing 14.
  • a radial bearing for the shaft 20 and the turbine 46 is formed.
  • the swirl insert 50 is clamped between the upper half 16 and the lower half 18 of the housing 14 and thereby secured to the housing 14.
  • the fan nozzles 24, 26, 28 in the nozzle head 22 are aligned neutrally and thus contribute by the dispensed spray neither to an increase nor to a reduction of the rotation generated by the turbine 46.
  • the spray fans, which are output by the fan nozzles 24, 26, 28, thus lie in or symmetrical to a plane which includes the central longitudinal axis 52 of the nozzle assembly 10.
  • the dispensing of a spray fan through the fan nozzles 24, 26, 28 does not thereby result in a torque about the central longitudinal axis 52.
  • any nozzles can be used in the invention.
  • a second flow path provided, starting from the connecting line 12 leads through a central bore 54 in the swirl insert directly into the interior of the shaft 20 and then to the nozzle head 22. Liquid, which is passed through this second flow path, does not pass through the turbine wheel 46 and thus does not contribute to a rotational movement of the nozzle head 22.
  • a speed of the nozzle head 22 does not rise or only within narrow limits. It is essential that for this limitation of the speed of the nozzle head 22 and thus also of the turbine wheel 46 with increasing water pressure no liquid pressure controlled friction brake is needed.
  • the nozzle assembly 10 and especially the bearings with the bearing bushes 44, 32 can be constructed extremely low wear.
  • the shaft 20 is thus completely pierced concentric to its central longitudinal axis and the swirl insert 50 has the central bore 54, which opens into the interior of the shaft 20.
  • Fig. 2 shows a view of the nozzle assembly 10 of Fig. 1 in an exploded view.
  • the upper housing half 16 is provided with an internal thread 56 into which an external thread 58 can be screwed to the lower housing half 18.
  • the swirl insert 50 between the housing halves 16, 18 firmly clamped.
  • the swirl insert 50 has a total of six swirl holes 60, which are inclined in the same direction in the circumferential direction. Above the swirl insert 50 pending liquid is thereby obliquely deflected by the swirl holes 60, strikes the turbine wheel 46 and thereby causes a rotational movement of the turbine wheel 46 about the central longitudinal axis 52nd
  • the swirl insert 50 is provided with the bearing pin 48 which is pierced concentrically to the central longitudinal axis 52 by means of the through hole 54.
  • the bearing pin 48 extends into the bearing bush 44.
  • the bushing 44 has a cylindrical portion and a circumferential projection which is received in a mating recess in the top of the turbine wheel 46.
  • the turbine wheel 46 is provided with a total of ten drive holes 62, which are arranged inclined to the central longitudinal axis 52. In this case, the angle of inclination of the drive bores 62 is directed opposite to the angle of inclination of the swirl bores 60, as for example in FIG Fig. 8 can be seen.
  • the turbine wheel 46 is formed integrally with the hollow-bored shaft 20 and also has a central bore into which the bearing bush 44 is inserted.
  • the shaft 20 is provided in its, adjoining the turbine wheel 46 area with a total of six radially arranged slots 64.
  • An extension direction of the elongated holes is parallel to the central longitudinal axis 52.
  • liquid which has passed the drive bores 62 in the turbine wheel 46 can reach the interior of the hollow-bored shaft 20 and from there to the nozzle head 22.
  • a first flow path for liquid from the connecting line 12 thus leads through the swirl bores 60 in the swirl disk 50, through the drive holes 62 in the turbine wheel 46 and then through the slots 64 in the interior of the hollow-bored shaft 20 and from there into the nozzle head 22 and the flat jet nozzles 24, 26, 28.
  • a second flow path as already mentioned, through the center bore 54 of the swirl insert 50 and from there directly into the interior of the hollow-drilled shaft 20 and from there also to the nozzle head 22 and the flat-jet nozzles 24, 26, 28th
  • the shaft 20 is provided with the extending in the radial direction, circumferential shoulder 42, the turbine facing away from the bottom forms a thrust bearing surface 66 of a thrust bearing.
  • the shaft 20 is inserted into the bearing bush 32, which also has a projecting in the radial direction, circumferential projection whose top forms a thrust bearing surface.
  • a cylindrical portion of the bushing 32 is inserted into a bearing bore 68 in the lower half 18 of the housing.
  • the circumferential projection 42 with its bearing surface 66 and the top of the bearing bush 32 form a thrust bearing for the shaft 20, which is parallel to the central longitudinal axis 52 and in the representation of Fig. 1 picks up downward forces.
  • FIG. 3 shows the shaft 20 with the turbine 46 in a view obliquely from above. It can be seen that the drive bores 62 are inclined in the circumferential direction in the disk-shaped turbine wheel 46 are introduced to a central longitudinal axis. In addition, all the drive holes 62 have a circumferentially extending Extension 70 up.
  • the extension 70 is formed in that a pit mill, which is dipped obliquely into the disk-shaped turbine wheel 46 for forming the drive bores 62, is immersed once again at different angles or, for example, parallel to the central longitudinal axis in the upper region of the drive bores 62.
  • Fig. 4 shows a view of the shaft 20 and the turbine wheel 46 obliquely from the side.
  • a total of four radial bores 36 are provided in the shaft 20, of which in the illustration of Fig. 2 only two are visible.
  • these radial bores 36 provide fluid lubrication of the thrust bearing and the radial bearing between the shaft 20 and the bearing bush 32, see Fig. 1 ,
  • FIG. 5 shows a view of the turbine wheel 46 with the hollow-bored shaft 20 from above. Good to see is the continuous interior 72 of the hollow-drilled shaft 20, can pass through the liquid directly from the connecting line through the central bore 54 of the swirl insert 50 and also through the drive holes 62 of the turbine wheel 46 and the slots 64 to the nozzle head 22, see Fig. 1 ,
  • FIG. 6 shows a view on the cutting plane A - A in Fig. 5 , In Fig. 6 Good to see the oblique to the central longitudinal axis 52 extending drive holes 62 and the extensions 70 at the upstream end of the drive holes 62nd
  • the presentation of the Fig. 7 shows the swirl insert 50 in a view obliquely from above.
  • the central bore 54 is disposed concentric with the generally disc-shaped swirl insert 50 and is located at the bottom of a depression 74 which is also concentric with the swirl insert 50.
  • the top of the swirl insert 50 is, see Fig. 1 , slightly convex.
  • the swirl bores 60 are arranged in the region of the transition between the convex-shaped section 76 and an outer, disk-shaped section 78 of the swirl insert 50.
  • FIG. 8 shows an enlarged, sectional representation of the swirl insert 50 and the turbine wheel 46 with a portion of the shaft 20 in a partially sectioned view.
  • the swirl bores 60 in the swirl insert 50 are inclined in opposite directions to the drive bores 62 in the turbine wheel 46. Seen in the circumferential direction, the extensions 70 of the drive bores 62 in the turbine wheel 46 are arranged only on one side on the drive bores 62. Extensions 70 at the upstream end of drive bores 62 facilitate startup of turbine wheel 46 because the full cross-section of a liquid jet exiting from swirl bore 60 may penetrate into drive bores 62 when drive bore 62 is approximately in the in-hole Fig. 8 shown position is arranged relative to the swirl hole 60.
  • the center bore 54 has the positive effect that a flow within the cavity of the shaft 20 is only slightly turbulent and thus the jet pattern of the fan nozzles 24, 26, 28 is sharply defined. As a result, the cleaning effect of the spray fan output by the fan nozzles 24, 26, 28 as well as their throw is significantly improved. As already stated, the center bore 54 also ensures an equalization of the rotation of the hollow shaft 20, even with increasing fluid pressure.
  • center bore 54 in the swirl insert 50 also ensures that any particles present in the liquid supplied are passed directly into the cavity of the shaft 20 and thus to the fan nozzles 24, 26, 28 and thereby not in the bearing gap between the bearing pin 48 of the Swirl insert 50 and the bearing bush 44 in the turbine wheel 46 or in the radial bearing gap 38 or the thrust bearing 40 can pass between the bearing bush 32 and the shaft 20, see Fig. 1 ,

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Hydraulic Turbines (AREA)
  • Nozzles (AREA)
EP12159003A 2011-04-06 2012-03-12 Agencement rotatif de buses Withdrawn EP2508266A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011006865.1A DE102011006865B4 (de) 2011-04-06 2011-04-06 Rotierende Düsenanordnung

Publications (1)

Publication Number Publication Date
EP2508266A1 true EP2508266A1 (fr) 2012-10-10

Family

ID=45894143

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12159003A Withdrawn EP2508266A1 (fr) 2011-04-06 2012-03-12 Agencement rotatif de buses

Country Status (5)

Country Link
US (1) US20120256018A1 (fr)
EP (1) EP2508266A1 (fr)
CN (1) CN102764708A (fr)
DE (2) DE202011109850U1 (fr)
RU (1) RU2012112413A (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2017174622A1 (fr) * 2016-04-07 2017-10-12 Hammelmann GmbH Buse rotative à haute pression

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CN104801438A (zh) * 2015-04-20 2015-07-29 谢博 一种破碎洗料机清洗液喷头
CN105032646B (zh) * 2015-08-17 2017-06-06 老肯医疗科技股份有限公司 一种适用于便盆清洗机的伸缩旋转喷头
DE102015222771B3 (de) 2015-11-18 2017-05-18 Technische Universität Berlin Fluidisches Bauteil
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DE202011109850U1 (de) 2012-08-08
RU2012112413A (ru) 2013-10-10
DE102011006865A1 (de) 2012-10-11
CN102764708A (zh) 2012-11-07
US20120256018A1 (en) 2012-10-11

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