EP0742053B1 - Hydrodynamic nozzle for the cleaning of tubes and conduits - Google Patents
Hydrodynamic nozzle for the cleaning of tubes and conduits Download PDFInfo
- Publication number
- EP0742053B1 EP0742053B1 EP96107047A EP96107047A EP0742053B1 EP 0742053 B1 EP0742053 B1 EP 0742053B1 EP 96107047 A EP96107047 A EP 96107047A EP 96107047 A EP96107047 A EP 96107047A EP 0742053 B1 EP0742053 B1 EP 0742053B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radius
- inlet opening
- nozzle
- water inlet
- hydrodynamic
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
- B08B9/0495—Nozzles propelled by fluid jets
-
- 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
-
- 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
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
- B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
- B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
Definitions
- the invention relates to a hydrodynamic nozzle for cleaning pipes and channels according to the preamble of the first claim.
- Numerous sewer cleaning nozzles are already known which have a water connection as a pressurized water inlet opening and associated recoil openings connected to the rear. Due to the recoil force of the water, the nozzle experiences a feed movement in the pipe or channel.
- DE-U-92 14 268.8 describes such a nozzle body made of solid material.
- the connection between the water connection and the water outlets (recoil openings) takes place via a first hole that leads obliquely outwards into the nozzle body from the water connection and a second hole that leads obliquely inwards from the water outlet, which extends as far as the first hole and is connected to it .
- the apex areas of the holes are rounded off to avoid turbulence.
- the water connection has a conical bottom of the bore, the cone being open in the direction of the hose connection.
- the first holes are drilled in the bottom of the hole.
- the decisive disadvantage of this design is that the water hits the bottom of the water connection, causing turbulence and loss of performance.
- Another disadvantage is that the two connecting bores meet at an acute angle.
- a nozzle which is already somewhat improved in terms of flow technology is described in WO 85/05295.
- the connecting channels between the pressurized water inlet opening and the recoil opening have a relatively large radius.
- FIG. 2 shows such a nozzle, which has a conical water divider in the center of the hose connection, to which the radius adjoins.
- the cavity in the nozzle widens relatively sharply, so that an annular baffle is formed in the direction of the recoil openings.
- the outflow openings lead from the baffle in the cavity to the outside in the radiation angle.
- Nozzles are inserted into the outflow openings and have a conical widening of the inner diameter in the direction of the cavity.
- the impact of the liquid flow on the baffle creates a discontinuous cross-sectional constriction, which already reduces the efficiency to approx. 70%.
- there is the pressure and form resistance of the baffle plate which leads to a further considerable reduction in efficiency, the greatest resistance value of a circular plate being used in the present case. This unfavorable fluidic design weakens the axial pressure of the emerging water jet and thus reduces the cleaning effect.
- the object of the invention is a hydrodynamic nozzle for the cleaning of pipes and ducts, the highest possible efficiency and thus one optimal cleaning power guaranteed and a simple has a constructive structure.
- the sewer cleaning nozzle consists of a nozzle body with a connection for a water hose as a pressurized water inlet opening.
- the pressurized water outlet openings are arranged on the same or different pitch circles and connected to the pressurized water inlet opening via channels.
- the channels are inclined at a defined angle to the axis of the nozzle body.
- a distribution cavity adjoins the pressurized water inlet opening, into which the channels connected to the pressurized water outlet openings open.
- a conical water divider with a defined cone angle is arranged centrally to the axis of the nozzle body, the cone tip of the water divider being directed towards the pressurized water inlet opening.
- a defined, substantially semicircular radius adjoins the cone bottom of the water divider, the curvature of which is opposite to the pressurized water inlet opening.
- Each channel opens into the distribution cavity in such a way that the outermost line of the outside diameter of the channel lies tangentially to the radius or merges into the radius.
- the pressurized water inlet opening has a radius which increases the diameter in the direction of the distribution cavity and which has the same direction of curvature as the radius which adjoins the water divider.
- each channel is funnel-shaped at the end that opens into the distribution cavity.
- the opening angle of the funnel is preferably 45 to 90 °.
- the nozzle body is of divided design. In the case of nozzles with relatively large dimensions, the division plane lies in the region of the distribution cavity in the center of the radius and perpendicular to the axis of the nozzle body. Nozzles of smaller dimensions can have the parting plane in the region of the distribution cavity at the center of the radius and parallel to the axis of the nozzle body.
- a central axial through bore is conventionally arranged from the distribution cavity to the end of the nozzle body, which lies opposite the pressurized water outlet openings.
- this through hole has a funnel-shaped diameter widening at its end in the water divider in the direction of the distribution cavity.
- the opening angle of the funnel of the through hole is preferably 20 to 90 °.
- a funnel-shaped supply of the flow medium from the pressurized water inlet to the ducts is achieved in particular by the tangential abutment of the channels on the radius that adjoins the funnel and by the gradual radius-shaped widening of the diameter of the pressurized water inlet opening.
- the fluidic behavior is further improved by the funnel-shaped widening of the diameter of the channels in the direction of the distribution cavity.
- the split design of the nozzle makes it easy possible the interiors to reduce the drag coefficient and to increase wear resistance to process accordingly, e.g. to coat. Already the coating of the water divider and of it subsequent radius in the lower part of the nozzle causes a substantial reduction in the drag coefficient. With these relatively minor design changes can the efficiency of the hydrodynamic invention Nozzle compared to conventional sewer cleaning nozzles same design surprisingly increase.
- FIGS. 1, 2 and 3 A hydrodynamic nozzle with a total of 8 outlet openings and a divided nozzle body 1 is shown in FIGS. 1, 2 and 3.
- the nozzle body 1 consists of an upper part 2 and a lower part 3, the pressurized water inlet opening 4 being arranged in the form of the hose connection in the upper part.
- a total of 8 pressurized water outlet openings 5a and 5b are provided, alternately lying on different pitch circles T1 and T2, at an angle of 45 °.
- the pressurized water outlet openings 5a which lie on the inner pitch circle T1, have a smaller radiation angle ⁇ than the pressurized water outlet openings 5b on the outer pitch circle T2.
- 1 shows the longitudinal section in the region of the pressurized water outlet openings 5a with the radiation angle ⁇ 1 and in FIG.
- a distribution cavity 6 is formed at the connection to the pressurized water inlet opening.
- the pressurized water outlet openings 5a and 5b are connected to the pressurized water inlet opening 4 via channels 6a and 6b, which open into the distribution cavity 7.
- a conical water divider 8 is arranged, the cone tip of which points in the direction of the pressurized water inlet opening 4.
- a radius r1 is provided from the bottom of the water divider 8 to the outermost point of the diameter d1 of the channels 6.
- the channels 6a and 6b are tangential to this radius r1 with the outermost point of their diameter d1.
- the angle of inclination in comparison to the axis M of the nozzle body 1 corresponds to ⁇ 1 in the channels 6a which are connected to the outlet openings 5a and ⁇ 2 in the channels 6b which are connected to the outlet openings 5b.
- the pressure water inlet opening 4 widens at its end in the direction of the distribution cavity 7 in a radius r2, which has the same direction of curvature as the radius r1 at the base of the distribution cavity 7.
- Both radii r1 and r2 are connected to one another via a further radius r3, which has an opposite direction of curvature to the radii r1 and r2.
- 3 shows the top view of the nozzle according to FIGS. 1 and 2.
- the pressurized water outlet openings 5a and 5b lie on different pitch circles T1 and T2.
- Fig. 4 the upper part 2 and the lower part 3 of the nozzle shown in a separate state.
- the cutting plane was placed along the line A-A in Fig. 3a.
- the division of the The nozzle was at the center of the radius r1.
- the Connection of the two nozzle halves 2 and 3 takes place at this embodiment via a thread 9.
- Das The lower threaded part is used for mounting in the upper part of the nozzle screwed in.
- the lower part 3 of the nozzle Radii r1 and the water divider 8 arranged, the The water divider is assembled into the upper part of the nozzle protrudes.
- the Pressurized water inlet opening 4 which at its end in Radius r2 and itself in the direction of the nozzle interior then has the radius r3.
- This shared Nozzle design has essential manufacturing technology Advantages and is easy to manufacture. Doing so advantageously upper part 2 and lower part 3 manufactured and after their joining channels 6a and 6b and the pressurized water outlet openings 5a and 5b be introduced. Another advantage of the shared Nozzle design is that it is dirty can be easily disassembled and cleaned.
- the Water divider 8 and the radii r1 are in this example provided with a coating B, which the resistance coefficient decreased.
- Fig. 5 again shows a sectional view of the Upper nozzle part 2 with introduced channels 6a and Pressurized water outlet openings 5a.
- the pressurized water inlet opening has one in front of radius r2 conical extension 10 on.
- Fig. 6 shows a view acc. Fig. 5 from the direction of Lower part of the nozzle 3.
- the channels 5a and 5b point advantageously at its end, which each opposite to the pressurized water outlet opening 6a and 6b lies, a funnel-shaped extension 11.
- FIG. 7 A cut and an unfolding along the line X in 5 and 6 is shown in FIG. 7. Go there the funnel-shaped extensions 11 of the channels 5a and 5b into each other.
- This funnel-shaped extension 11 preferably has an opening angle ⁇ 1 of 90 °.
- traction nozzles With so-called traction nozzles with a central bore 12 from the distribution cavity 7 to the end of the nozzle body 1 opposite the pressurized water inlet opening 4 acc. Fig. 8, has this bore 12 at its end in the direction of Distribution cavity 7 also a funnel-shaped Extension 13 on.
- the opening angle is ⁇ 2 preferably 30 °.
- the two nozzle halves can also be connected to one another in a detachable or non-detachable manner by other known joining methods.
- the detachable connection as already described, has the advantage of being easier to clean.
- detachably divided nozzles can be regenerated in the event of any damage in the interior of the nozzle (distribution cavity 7), so that their service life is extended many times over. In continuation of this idea, it is still possible, according to Fig.
- the lower part 3 has a shaped element 14 which forms the water divider 8 and the radius r1 and is made of wear-resistant and resistance-reducing material.
- the shaped element 14 is preferably releasably inserted into the lower part so that it can be replaced when worn, and in particular, as shown schematically, is locked with the connecting element 15 by screwing and pinning.
- the shaped element 14 can also be divided into a plurality of chambers 16 in the form of a segment (FIG. 11 a), the number of the chambers 16 should correspond to the number of pressurized water outlet openings 5.
- 11b and 11c show the representation of two chamber segments with different shapes along the line X in FIG. 11a. 11b, the chambers 16 are also semicircular in cross section with a radius rk. Another variant is that the chambers 16 have flanks 17 with a defined opening angle ⁇ K and a radius rK2 in the base (FIG. 11c) in order to ensure optimal fluidic behavior of the liquid jet.
- the number of pressurized water outlet openings 5 (or 5a and 5b) is determined in accordance with the desired requirement profile, and their radiation angle ⁇ can also be the same, so that they lie on a common pitch circle T. 6 or more pressurized water outlet openings are usually selected.
- the radiation angle ⁇ can be between 5 ° and 40 °.
- the radii r1, r2 and r3 the dimensions of the water divider 8 and the distance L from the center of the radius r1, from the start of the nozzle on the side of the hose connection, are defined determine.
- the continuous flow area is lengthened or the axial pressure PK in the area of the core zone (K) and the axial pressure PH in the main area (H) are increased (FIG. 12).
- D1 is the nozzle diameter.
Description
Die Erfindung betrifft eine hydrodynamische Düse für die
Reinigung von Rohren und Kanälen nach dem Oberbegriff des
ersten Patentanspruchs.
Es sind bereits zahlreiche Kanalreinigungsdüsen bekannt,
die einen Wasseranschluß als Druckwassereintrittsöffnung
und damit verbundene nach hinten gerichtete Rückstoßöffnungen
aufweisen. Durch die Rückstoßkraft des Wassers
erfährt die Düse im Rohr oder Kanal eine Vorschubbewegung.
Einen derartigen Düsenkörper aus Vollmaterial
beschreibt DE-U-92 14 268.8. Die Verbindung zwischen
Wasseranschluß und den Wasserauslässen (Rückstoßöffnungen)
erfolgt dabei über eine vom Wasseranschluß aus
schräg nach außen in den Düsenkörper hineinführende erste
Bohrung und eine vom Wasserauslaß schräg nach innen
führende zweite Bohrung, die bis an die erste Bohrung
hinanreicht und mit dieser in Verbindung steht. Die
Scheitelbereiche der Bohrungen werden dabei abgerundet,
um Verwirbelungen zu vermeiden. Der Wasseranschluß weist
einen kegelförmigen Bohrungsgrund auf, wobei der Kegel
in Richtung des Schlauchanschlusses geöffnet ist.
In dem Bohrungsgrund werden die ersten Bohrungen eingebracht.
Der entscheidende Nachteil dieser konstruktiven
Ausführung besteht darin, daß das Wasser auf dem
Bohrungsgrund des Wasseranschlusses aufprallt, wodurch
Verwirbelungen und damit Leistungsverluste auftreten.
Weiterhin wirkt sich nachteilig aus, daß die beiden
Verbindungsbohrungen in einem spitzen Winkel aufeinander
treffen.
Eine strömungstechnisch bereits etwas verbesserte Düse
wird in WO 85/05295 beschrieben. Dabei weisen die
Verbindungskanäle zwischen Druckwassereintrittsöffnung
und Rückstoßöffnung einen relativ großen Radius auf.
In Fig. 2 wird eine derartige Düse gezeigt, die mittig im
Bereich des Schlauchanschlusses einen kegelförmigen
Wasserteiler aufweist, an welchen sich der Radius
anschließt. Vom Schlauchanschluß aus verbreitert sich der
Hohlraum in der Düse relativ scharfkantig, so daß eine
ringförmige Prallfläche in Richtung der Rückstoßöffnungen
gebildet wird. Die Ausströmöffnungen führen von der
Prallfläche im Hohlraum im Abstrahlwinkel nach außen. In
die Ausströmöffnungen sind Düsen eingesetzt, die in
Richtung zum Hohlraum eine kegelförmige Erweiterung des
Innendurchmessers aufweisen. Durch das Auftreffen des
Flüssigkeitsstroms auf die Prallfläche entsteht nach der
Strömungslehre eine unstetige Querschnittsverengung, die
den Wirkungsgrad bereits auf ca. 70% verringert. Dazu
kommt der Druck- und Formwiderstand der Prallplatte, der
zu einer weiteren erheblichen Verringerung des
Wirkungsgrades führt, wobei im vorliegenden Fall der
größte Widerstandswert einer kreisförmigen Platte
anzusetzen ist.
Durch diese ungünstige strömungstechnische Gestaltung
wird der Axialdruck des austretenden Wasserstrahls
geschwächt und somit die Reinigungswirkung verringert.The invention relates to a hydrodynamic nozzle for cleaning pipes and channels according to the preamble of the first claim.
Numerous sewer cleaning nozzles are already known which have a water connection as a pressurized water inlet opening and associated recoil openings connected to the rear. Due to the recoil force of the water, the nozzle experiences a feed movement in the pipe or channel. DE-U-92 14 268.8 describes such a nozzle body made of solid material. The connection between the water connection and the water outlets (recoil openings) takes place via a first hole that leads obliquely outwards into the nozzle body from the water connection and a second hole that leads obliquely inwards from the water outlet, which extends as far as the first hole and is connected to it . The apex areas of the holes are rounded off to avoid turbulence. The water connection has a conical bottom of the bore, the cone being open in the direction of the hose connection. The first holes are drilled in the bottom of the hole. The decisive disadvantage of this design is that the water hits the bottom of the water connection, causing turbulence and loss of performance. Another disadvantage is that the two connecting bores meet at an acute angle.
A nozzle which is already somewhat improved in terms of flow technology is described in WO 85/05295. The connecting channels between the pressurized water inlet opening and the recoil opening have a relatively large radius.
FIG. 2 shows such a nozzle, which has a conical water divider in the center of the hose connection, to which the radius adjoins. From the hose connection, the cavity in the nozzle widens relatively sharply, so that an annular baffle is formed in the direction of the recoil openings. The outflow openings lead from the baffle in the cavity to the outside in the radiation angle. Nozzles are inserted into the outflow openings and have a conical widening of the inner diameter in the direction of the cavity. The impact of the liquid flow on the baffle creates a discontinuous cross-sectional constriction, which already reduces the efficiency to approx. 70%. In addition, there is the pressure and form resistance of the baffle plate, which leads to a further considerable reduction in efficiency, the greatest resistance value of a circular plate being used in the present case.
This unfavorable fluidic design weakens the axial pressure of the emerging water jet and thus reduces the cleaning effect.
Aufgabe der Erfindung ist es, eine hydrodynamische Düse für die Reinigung von Rohren und Kanälen zu entwickeln, die einen höchstmöglichen Wirkungsgrad und somit eine optimale Reinigungskraft gewährleistet und einen einfachen konstruktiven Aufbau aufweist.The object of the invention is a hydrodynamic nozzle for the cleaning of pipes and ducts, the highest possible efficiency and thus one optimal cleaning power guaranteed and a simple has a constructive structure.
Diese Aufgabe wird durch die Merkmale des ersten
Patentanspruches und die weiteren Merkmale in den
Unteransprüchen gelöst.
Die Kanalreinigungsdüse besteht dabei aus einem
Düsengrundkörper mit einem Anschluß für einen
Wasserschlauch als Druckwassereintrittsöffnung. Auf der
Seite der Druckwassereintrittsöffnung sind die Druckwasseraustrittsöffnungen
auf gleichen oder unterschiedlichen
Teilkreisen angeordnet und über Kanäle mit der
Druckwassereintrittsöffnung verbunden. Die Kanäle sind in
definierten Winkel zur Achse des Düsenkörpers geneigt.
Erfindungsgemäß schließt sich an die Druckwassereintrittsöffnung
ein Verteilungshohlraum an, in welchen die
mit den Druckwasseraustrittsöffnungen verbundenen Kanäle
münden. Am Grund des Verteilungshohlraumes, welcher der
Druckwassereintrittsöffnung gegenüberliegt, ist zentrisch
zur Achse des Düsenkörpers ein kegelförmiger Wasserteiler
mit einem definierten Kegelwinkel angeordnet, wobei die
Kegelspitze des Wasserteilers in Richtung zur
Druckwassereintrittsöffnung gerichtet ist.
An den Kegelgrund des Wasserteilers schließt sich ein
definierter, im wesentlichen halbkreisförmiger Radius an,
dessen Krümmung der Druckwassereintrittsöffnung entgegengesetzt
ist. Jeder Kanal mündet so in den
Verteilungshohlraum, daß die äußerste Linie des
Außendurchmessers des Kanals tangential am Radius
anliegt, bzw. in den Radius übergeht.
Weiterhin weist die Druckwassereintrittsöffnung in
Richtung des Verteilungshohlraumes umlaufend einen
durchmesservergrößernden Radius auf, der die gleiche
Krümmungsrichtung wie der Radius hat, der sich an den
Wasserteiler anschließt.
Diese beiden Radien sind zur Vermeidung von Wirbelbildungen
über einen weiteren Radius mit entgegengesetzter
Krümmungsrichtung miteinander verbunden.
Zusätzlich ist der Durchmesser jedes Kanals, an dem Ende,
welches in den Verteilungshohlraum mündet, trichterförmig
erweitert. Der Öffnungswinkel des Trichters beträgt
vorzugsweise 45 bis 90°.
Zur Gewährleistung einer ökonomischen Fertigung ist der
Düsenkörper geteilt ausgebildet. Die Teilungsebene liegt
bei Düsen mit relativ großen Abmessungen im Bereich des
Verteilungshohlraumes im Mittelpunkt des Radius und
senkrecht zur Achse des Düsenkörpers.
Düsen kleinerer Abmessung können die Teilungsebene im
Bereich des Verteilungshohlraumes im Mittelpunkt des
Radius und parallel zur Achse des Düsenkörpers aufweisen.
Bei sogenannten Zugdüsen ist herkömmlich vom Verteilungshohlraum
bis zum Ende des Düsenkörpers, welches den
Druckwasseraustrittsöffnungen gegenüberliegt, eine
zentrische axiale Durchgangsbohrung angeordnet. Diese
Durchgangsbohrung weist erfindungsgemäß an ihrem Ende im
Wasserteiler in Richtung zum Verteilungshohlraum eine
trichterförmige Durchmessererweiterung auf.
Der Öffnungswinkel des Trichters der Durchgangsbohrung
beträgt vorzugsweise 20 bis 90°.
Erfindungsgemäß besteht auch die Möglichkeit, den
Wasserteiler oder eine Einheit aus Wasserteiler und sich
daran anschließenden Radius separat zu fertigen und in
den Düsenkörper bzw. dessen Unterteil einzusetzen.This object is achieved by the features of the first claim and the further features in the subclaims.
The sewer cleaning nozzle consists of a nozzle body with a connection for a water hose as a pressurized water inlet opening. On the side of the pressurized water inlet opening, the pressurized water outlet openings are arranged on the same or different pitch circles and connected to the pressurized water inlet opening via channels. The channels are inclined at a defined angle to the axis of the nozzle body.
According to the invention, a distribution cavity adjoins the pressurized water inlet opening, into which the channels connected to the pressurized water outlet openings open. At the bottom of the distribution cavity, which is opposite the pressurized water inlet opening, a conical water divider with a defined cone angle is arranged centrally to the axis of the nozzle body, the cone tip of the water divider being directed towards the pressurized water inlet opening.
A defined, substantially semicircular radius adjoins the cone bottom of the water divider, the curvature of which is opposite to the pressurized water inlet opening. Each channel opens into the distribution cavity in such a way that the outermost line of the outside diameter of the channel lies tangentially to the radius or merges into the radius.
Furthermore, the pressurized water inlet opening has a radius which increases the diameter in the direction of the distribution cavity and which has the same direction of curvature as the radius which adjoins the water divider.
To avoid eddy formation, these two radii are connected to one another over a further radius with the opposite direction of curvature. In addition, the diameter of each channel is funnel-shaped at the end that opens into the distribution cavity. The opening angle of the funnel is preferably 45 to 90 °.
To ensure economical production, the nozzle body is of divided design. In the case of nozzles with relatively large dimensions, the division plane lies in the region of the distribution cavity in the center of the radius and perpendicular to the axis of the nozzle body.
Nozzles of smaller dimensions can have the parting plane in the region of the distribution cavity at the center of the radius and parallel to the axis of the nozzle body. In the case of so-called traction nozzles, a central axial through bore is conventionally arranged from the distribution cavity to the end of the nozzle body, which lies opposite the pressurized water outlet openings. According to the invention, this through hole has a funnel-shaped diameter widening at its end in the water divider in the direction of the distribution cavity.
The opening angle of the funnel of the through hole is preferably 20 to 90 °.
According to the invention, there is also the possibility of separately manufacturing the water divider or a unit consisting of the water divider and the radius connected to it and inserting it into the nozzle body or its lower part.
Mit dieser erfindungsgemäßen hydrodynamischen Düse, wird
insbesondere durch das tangentiale Anliegen der Kanäle an
dem Radius, der sich an den Trichter anschließt, und
durch die allmähliche radienförmige Durchmessererweiterung
der Druckwassereintrittsöffnung eine trichterförmige
Zuführung des Strömungsmediums von der
Druckwassereintrittsöffnung zu den Kanälen erzielt.
Weiter verbessert wird das strömungstechnische Verhalten
durch die trichterförmige Durchmessererweiterung der
Kanäle in Richtung des Verteilungshohlraumes.
Durch die erstmalige vollständige Beseitigung von
unstetigen Querschnittsänderungen sowie Formwiderständen
mit der neuartigen und eleganten Innengestaltung der Düse
werden Stoßverluste und turbulente Strömungen nahezu bis
auf Null reduziert. With this hydrodynamic nozzle according to the invention, a funnel-shaped supply of the flow medium from the pressurized water inlet to the ducts is achieved in particular by the tangential abutment of the channels on the radius that adjoins the funnel and by the gradual radius-shaped widening of the diameter of the pressurized water inlet opening. The fluidic behavior is further improved by the funnel-shaped widening of the diameter of the channels in the direction of the distribution cavity.
The first complete elimination of discontinuous changes in cross-section as well as shape resistance with the new and elegant interior design of the nozzle reduces shock losses and turbulent flows almost to zero.
Durch die geteilte Ausführung der Düse ist es leicht möglich, die Innenräume zur Verringerung des Widerstandsbeiwertes und zur Erhöhung der Verschleißfestigkeit entsprechend zu bearbeiten, z.B. zu beschichten. Bereits die Beschichtung des Wasserteilers und des sich daran anschließenden Radius im Düsenunterteil bewirkt eine wesentliche Verringerung des Widerstandsbeiwertes. Mit diesen relativ geringfügigen konstruktiven Veränderungen kann der Wirkungsgrad der erfindungsgemäßen hydrodynamischen Düse im Vergleich zu herkömmlichen Kanalreinigungsdüsen gleicher Bauart überraschender Weise erhöht werden.The split design of the nozzle makes it easy possible the interiors to reduce the drag coefficient and to increase wear resistance to process accordingly, e.g. to coat. Already the coating of the water divider and of it subsequent radius in the lower part of the nozzle causes a substantial reduction in the drag coefficient. With these relatively minor design changes can the efficiency of the hydrodynamic invention Nozzle compared to conventional sewer cleaning nozzles same design surprisingly increase.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel und zugehörigen Zeichnungen näher erläutert.The invention is described below using an exemplary embodiment and associated drawings explained in more detail.
Es zeigen:
- Fig. 1:
- Düse in Schnittdarstellung
- Fig. 2:
- Düse in Schnittdarstellung um 45° gedreht
- Fig. 3:
- Draufsicht auf die Düse gem. Fig. 1
- Fig. 4:
- Düse geteilt
- Fig. 5:
- Oberteil der geteilten Düse mit Kanälen und Druckwasseraustrittsöffnungen
- Fig. 6:
- Ansicht des Düsenoberteils aus Richtung des Verteilungshohlraumes
- Fig. 7:
- Schnitt und Abwicklung durch drei Kanäle und Austrittsöffnungen gem. Fig. 5 und 6
- Fig. 8:
- Zugdüse
- Fig. 9:
- Düse mit eingesetztem Wasserteiler
- Fig. 10a:
- Düsenunterteil mit eingesetztem Formelement
- Fig. 10b und 10c:
- Darstellung des Formelementes
- Fig. 11a:
- Formelement mit kammerförmiger Unterteilung
- Fig. 11b und 11c:
- Schnittdarstellung von Kammersegmenten
- Fig. 12:
- Verlauf des Axialdruckes im Flüssigkeitsstrahl
- Fig. 1:
- Sectional nozzle
- Fig. 2:
- Sectional nozzle rotated 45 °
- Fig. 3:
- Top view of the nozzle acc. Fig. 1
- Fig. 4:
- Split nozzle
- Fig. 5:
- Upper part of the divided nozzle with channels and pressurized water outlet openings
- Fig. 6:
- View of the upper part of the nozzle from the direction of the distribution cavity
- Fig. 7:
- Cutting and processing through three channels and outlet openings acc. 5 and 6
- Fig. 8:
- Traction nozzle
- Fig. 9:
- Nozzle with water divider inserted
- 10a:
- Lower part of the nozzle with inserted molded element
- 10b and 10c:
- Representation of the form element
- 11a:
- Form element with chamber-shaped subdivision
- 11b and 11c:
- Sectional view of chamber segments
- Fig. 12:
- Course of the axial pressure in the liquid jet
Eine hydrodynamische Düse mit insgesamt 8 Austrittsöffnungen
und einem geteilten Düsenkörper 1 ist in Fig.
1, 2 und 3 dargestellt. Der Düsenkörper 1 besteht aus
einem Oberteil 2 und einem Unterteil 3, wobei im Oberteil
die Druckwassereintrittsöffnung 4 in Form des Schlauchanschlusses
angeordnet ist. Jeweils im Winkel von 45°
sind, abwechselnd auf unterschiedlichen Teilkreisen T1
und T2 liegend, insgesamt 8 Druckwasseraustrittsöffnungen
5a und 5b vorgesehen. Dabei haben die Druckwasseraustrittsöffnungen
5a, die auf dem inneren Teilkreis T1
liegen einen kleineren Abstrahlwinkel α als die
Druckwasseraustrittsöffnungen 5b auf dem äußeren
Teilkreis T2. In Fig. 1 ist der Längsschnitt im Bereich
der Druckwasseraustrittsöffnungen 5a mit dem
Abstrahlwinkel α1 und in der Fig. 2 der Längsschnitt im
Bereich der Druckwasseraustrittsöffnungen 5b mit dem
Abstrahlwinkel α2 dargestellt.
Am Anschluß an die Druckwassereintrittsöffnung wird ein
Verteilungshohlraum 6 gebildet. Die Druckwasseraustrittsöffnungen
5a und 5b sind über Kanäle 6a und 6b, die in
den Verteilungshohlraum 7 münden, mit der Druckwassereintrittsöffnung
4 verbunden. Am Grund des Verteilungshohlraumes
7 ist ein kegelförmiger Wasserteiler 8
angeordnet, dessen Kegelspitze in Richtung zur Druckwassereintrittsöffnung
4 weist. Vom Grund des Wasserteilers
8 bis zum äußersten Punkt des Durchmessers d1 der
Kanäle 6 ist ein Radius r1 vorgesehen. An diesem Radius
r1 liegen die Kanäle 6a und 6b mit dem äußersten Punkt
ihres Durchmessers d1, tangential an. Der Neigungswinkel
im Vergleich zur Achse M des Düsenkörpers 1 entspricht
bei den Kanälen 6a, die mit den Austrittsöffnungen 5a in
Verbindung stehen α1 und bei den Kanälen 6b, die mit den
Austrittsöffnungen 5b in Verbindung stehen α2. Die
Druckwassereintrittsöffnung 4 verbreitert sich an ihrem
Ende in Richtung des Verteilungshohlraumes 7 in einem
Radius r2, der die gleiche Krümmungsrichtung wie der
Radius r1 am Grund des Verteilungshohlraumes 7 aufweist.
Beide Radien r1 und r2 sind über einen weiteren Radius r3
miteinander verbunden, der zu den Radien r1 und r2 eine
entgegengesetzte Krümmungsrichtung hat. In Fig. 3 ist die
Draufsicht der Düse nach Fig. 1 und 2 dargestellt. Da
alle Kanäle tangential am Radius r1 anliegen, aber
abwechselnd unterschiedliche Neigungsrichtungen
aufweisen, liegen die Druckwasseraustrittsöffnungen 5a
und 5b auf unterschiedlichen Teilkreisen T1 und T2. Je
größer der Neigungswinkel und damit der Abstrahlwinkel
gewählt wird, um so weiter in Richtung zum
Außendurchmesser D des Düsenkörpers liegen die
Teilkreise.A hydrodynamic nozzle with a total of 8 outlet openings and a divided
A
In Fig. 4 ist das Oberteil 2 und das Unterteil 3 der Düse
in getrenntem Zustand dargestellt. Die Schnittebene wurde
entlang der Linie A-A in Fig. 3a gelegt. Die Teilung der
Düse erfolgte hierbei im Mittelpunkt des Radius r1. Die
Verbindung der beiden Düsenhälften 2 und 3 erfolgt bei
dieser Ausführungsform über ein Gewinde 9. Das
Gewindeunterteil wird zur Montage in das Düsenoberteil
eingeschraubt. Im Düsenunterteil 3 werden dabei die
Radien r1 und der Wasserteiler 8 angeordnet, wobei der
Wasserteiler im montierten Zustand in das Düsenoberteil
hineinragt. Im Oberteil 2 befindet sich die
Druckwassereintrittsöffnung 4, die an ihrem Ende in
Richtung des Düseninnenraumes den Radius r2 und sich
daran anschließend den Radius r3 aufweist. Diese geteilte
Düsenausführung hat wesentliche fertigungstechnische
Vorteile und ist einfach herstellbar. Dabei sollten
vorteilhafter Weise zuerst Oberteil 2 und Unterteil 3
gefertigt und nach deren Zusammenfügen die Kanäle 6a und
6b und die Druckwasseraustrittsöffnungen 5a und 5b
eingebracht werden. Ein weiterer Vorteil der geteilten
Düsenausführung besteht darin, daß sie bei Verschmutzung
leicht auseinandergenommen und gereinigt werden kann. Der
Wasserteiler 8 und die Radien r1 sind in diesem Beispiel
mit einer Beschichtung B versehen, welche den Widerstandsbeiwert
verringert.In Fig. 4, the
Fig. 5 zeigt nochmals eine Schnittdarstellung des
Düsenoberteils 2 mit eingebrachten Kanälen 6a und
Druckwasseraustrittsöffnungen 5a. Die Druckwassereintrittsöffnung
weist vor dem Radius r2 zusätzlich eine
kegelförmige Erweiterung 10 auf.Fig. 5 again shows a sectional view of the
Fig. 6 zeigt eine Ansicht gem. Fig. 5 aus Richtung des
Düsenunterteiles 3. Die Kanäle 5a und 5b weisen
vorteilhafter Weise an ihrem Ende, welches jeweils
gegenüber zur Druckwasseraustrittsöffnung 6a und 6b
liegt, eine trichterförmige Erweiterung 11 auf.Fig. 6 shows a view acc. Fig. 5 from the direction of
Lower part of the
Ein Schnitt und eine Abwicklung entlang der Linie X in
Fig. 5 und 6 wird in der Fig. 7 dargestellt. Dabei gehen
die trichterförmigen Erweiterungen 11 der Kanäle 5a und
5b ineinander über. Diese trichterförmige Erweiterung 11
weist vorzugsweise einen Öffnungswinkel β1 von 90° auf . A cut and an unfolding along the line X in
5 and 6 is shown in FIG. 7. Go there
the funnel-shaped
Bei sogenannten Zugdüsen mit einer zentrischen Bohrung
12 vom Verteilungshohlraum 7 zum Ende des Düsenkörpers 1
gegenüber der Druckwassereintrittsöffnung 4 gem. Fig. 8,
weist diese Bohrung 12 an ihrem Ende in Richtung des
Verteilungshohlraumes 7 ebenfalls eine trichterförmige
Erweiterung 13 auf. Der Öffnungswinkel β2 beträgt
vorzugsweise 30°.With so-called traction nozzles with a
Es besteht auch die Möglichkeit, die Düsen aus einem Stück zu fertigen. Um die gleichen strömungstechnischen Verteile zu erzielen, sind dabei andere Fertigungsverfahren, z.B. das Urformen anzuwenden.There is also the option of making the nozzles from one To manufacture pieces. To the same fluidic To achieve distributions are different Manufacturing processes, e.g. to apply the original form.
Neben den vorgenannten dargestellten Beispielen einer
geteilten Düse besteht auch die Möglichkeit, die
Teilungsebene zwischen Ober- und Unterteil des
Düsenkörpers anders zu legen.
Weiterhin können die beiden Düsenhälften bei der
geteilten Ausführung auch durch andere bekannte
Fügeverfahren lösbar oder unlösbar miteinander verbunden
werden. Dabei hat die lösbare Verbindung, wie bereits
beschrieben, den Vorteil einer einfacheren Reinigungsmöglichkeit.
Gleichzeitig können lösbar geteilte Düsen
bei eventuellen Beschädigungen im Düseninnenraum
(Verteilungshohlraum 7) regeneriert werden, so daß deren
Lebensdauer um ein Vielfaches verlängert wird.
In Fortsetzung dieses Gedankens ist es weiterhin möglich,
gem. Fig. 9 den kegelförmigen Wasserteiler 8 separat zu
fertigen und in das Düsenunterteil 3 lösbar oder unlösbar
einzusetzen. Eine weitere vorteilhafte Ausführungsform
der hydrodynamischen Düse besteht darin, daß das
Unterteil 3 ein Formelement 14 aufweist, welches den
Wasserteiler 8 und den Radius r1 bildet und aus
verschleißfestem und widerstandsbeiwertsenkendem
Werkstoff besteht. Das Formelement 14 wird vorzugsweise
lösbar in das Unterteil eingesetzt, so daß es bei
Verschleiß ausgewechselt werden kann, und ist
insbesondere, wie schematisch dargestellt, mit
Verbindungselement 15 durch Verschrauben und Verstiften
arretiert.
Das Formelement 14 kann auch in mehrere Kammern 16
segmentförmig unterteilt sein (Fig. 11a), wobei die
Anzahl der Kammern 16 mit der Anzahl der
Druckwasseraustrittsöffnungen 5 übereinstimmen sollte.
Die Darstellung von zwei Kammersegmenten mit
unterschiedlichen Formen entlang der Linie X in Fig. 11a
zeigen Fig. 11b und 11c.
Gem. Fig. 11b sind die Kammern 16 in ihrem Querschnitt
ebenfalls halbkreisförmig mit einem Radius rk
ausgebildet. Eine weitere Variante besteht darin, daß die
Kammern 16 Flanken 17 mit definiertem Öffnungswinkel βK
und einen Radius rK2 im Grund aufweisen (Fig. 11c), um
ein optimales strömungstechnisches Verhalten des
Flüssigkeitsstrahls zu gewährleisten.
Entsprechend des gewünschten Anforderungsprofiles wird
die Anzahl der Druckwasseraustrittsöffnungen 5 (bzw. 5a
und 5b) festgelegt, wobei deren Abstrahlwinkel α auch
gleich sein können, so daß sie auf einem gemeinsamen
Teilkreis T liegen. Üblicherweise werden 6 oder mehr
Druckwasseraustrittsöffnungen gewählt.
Der Abstrahlwinkel α kann zwischen 5° und 40° betragen.
Je nach Düsenabmessung (Länge und Durchmesser), und dem
erforderlichem Abstrahlwinkel α sind die Radien r1, r2
und r3, die Abmessungen des Wasserteilers 8 sowie der
Abstand L des Mittelpunktes des Radius r1, vom Beginn der
Düse an der Seite des Schlauchanschlusses, definiert zu
bestimmen.In addition to the above-mentioned examples of a divided nozzle, there is also the possibility of placing the parting plane between the upper and lower part of the nozzle body differently.
Furthermore, the two nozzle halves can also be connected to one another in a detachable or non-detachable manner by other known joining methods. The detachable connection, as already described, has the advantage of being easier to clean. At the same time, detachably divided nozzles can be regenerated in the event of any damage in the interior of the nozzle (distribution cavity 7), so that their service life is extended many times over.
In continuation of this idea, it is still possible, according to Fig. 9 to manufacture the
The shaped
11b, the
The number of pressurized water outlet openings 5 (or 5a and 5b) is determined in accordance with the desired requirement profile, and their radiation angle α can also be the same, so that they lie on a common pitch circle T. 6 or more pressurized water outlet openings are usually selected.
The radiation angle α can be between 5 ° and 40 °. Depending on the nozzle dimensions (length and diameter) and the required radiation angle α, the radii r1, r2 and r3, the dimensions of the
Infolge der strömungstechnischen Verbesserungen und der
Reibungsverminderung durch die Beschichtung wird der
kontinuierliche Strömungsbereich verlängert bzw. der
Axialdruck PK im Bereich der Kernzone (K) und der
Axialdruck PH im Hauptbereich (H) erhöht (Fig. 12). D1
ist dabei der Düsendurchmesser.
Durch die Erhöhung des Axialdruckes wird die
Reinigungswirkung der erfindungsgemäßen hydrodynamischen
Düse im Vergleich zu herkömmlichen Düsen gleicher Bauart
wesentlich verbessert.As a result of the improvements in flow technology and the reduction in friction due to the coating, the continuous flow area is lengthened or the axial pressure PK in the area of the core zone (K) and the axial pressure PH in the main area (H) are increased (FIG. 12). D1 is the nozzle diameter.
By increasing the axial pressure, the cleaning effect of the hydrodynamic nozzle according to the invention is significantly improved compared to conventional nozzles of the same type.
Claims (12)
- Hydrodynamic nozzle for cleaning of pipes and conduits, consisting of a nozzle base body with a connection for a water hose as pressurised water inlet opening and with pressurised water outlet openings which are disposed on the side of the pressurised water inlet opening on the same or different pitch circles and which are connected by means of passages to the pressurised water inlet opening, whereby the pressurised water outlet openings and the passages are inclined at a defined angle to the axis of the nozzle body,whereby the pressurised water inlet opening (4) is followed by a distribution chamber (7) into which the passages (6a and 6b) connected to the pressurised water outlet openings (5a, 5b) debouch, whereby a conical water divider (8) with a defined cone angle ( ) is disposed at the base of the distribution chamber (7) facing the pressurised water inlet opening (4) centrally in relation to the axis of the nozzle body (1) and the cone tip (8) of which is aligned in the direction of the pressurised water inlet opening (4),and the base of the cone of the water divider (8) is followed by a defined, essentially semi-circular first radius (R1) the curvature of which faces the pressurised water inlet opening (4) and which forms the base of the distribution chamber (7),
characterised in that each passage (6a, 6b) inclined at the angle ( 1, 2) debouches into the distribution chamber (7) so that the outermost line of the outside diameter of the passage (6a, 6b) lies tangentially on the first radius (R1) or passes into the first radius (R1), and the pressurised water inlet opening (4) exhibits a diameter-enlarging second radius (R2) running around radially in the direction of the distribution chamber (7) and which has the same direction of curvature as the first radius (R1) and is connected to the first radius (R1) by means of a further third radius (R3) with the opposite direction of curvature. - Hydrodynamic nozzle according to claim 1, characterised in that at the end which debouches into the distribution chamber (7), the diameter of each passage (6a, 6b) is enlarged in the shape of a funnel.
- Hydrodynamic nozzle according to claim 2, characterised in that the opening angle ( 1) of the funnel-shaped widening (11) is 90°.
- Hydrodynamic nozzle according to one of claims 1 to 3, characterised in that the nozzle body (1) is divided into an upper part (2) and a lower part (3).
- Hydrodynamic nozzle according to claim 4, characterised in that the dividing plane lies in the area of the distribution chamber (7) at the central point of the first radius (R1) and perpendicular to the axis of the nozzle body (1), whereby the pressurised water inlet opening (4) and the pressurised water outlet openings (6a and 6b) and the second radius (r2) and the third radius (r3) are disposed in the upper part (2) and the water divider (8) and the first radius (r1) are disposed in the lower part (3).
- Hydrodynamic nozzle according to claim 4, characterised in that the dividing plane lies in the area of the distribution chamber (7) at the central point of the first radius (R1) and parallel to the axis (M) of the nozzle body (1).
- Hydrodynamic nozzle according to one of claims 1 to 6, characterised in that the water divider (8) is inserted detachably or non-detachably in the nozzle body (1).
- Hydrodynamic nozzle according to one of claims 1 to 7, characterised in that the water divider (8) is inserted detachably or non-detachably in the lower part (3) of the nozzle body (1).
- Hydrodynamic nozzle according to one of claims 1 to 8, characterised in that the faces of the cavities along which the hydraulic medium flows are machined so that the coefficient of resistance is minimised.
- Hydrodynamic nozzle according to one of claims 1 to 9, characterised in that the water divider (8) and the base of the distribution chamber (7) formed by the peripheral first radius (r1) are provided with a coating (B) reducing the coefficient of resistance.
- Hydrodynamic nozzle according to one of claims 1 to 10, characterised in that the unit comprising water divider (8) and first radius (r1) takes the form of a separate shaped element (14) and is disposed detachably in a corresponding recess in the lower part (3).
- Hydrodynamic nozzle according to claim 11, characterised in that the shaped element (14) is made of a wear-resistant material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19516780A DE19516780C1 (en) | 1995-05-11 | 1995-05-11 | Hydrodynamic cleaning nozzle for pipes and canals |
| DE19516780 | 1995-05-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0742053A1 EP0742053A1 (en) | 1996-11-13 |
| EP0742053B1 true EP0742053B1 (en) | 1999-08-18 |
Family
ID=7761321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96107047A Expired - Lifetime EP0742053B1 (en) | 1995-05-11 | 1996-05-04 | Hydrodynamic nozzle for the cleaning of tubes and conduits |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5992432A (en) |
| EP (1) | EP0742053B1 (en) |
| DE (2) | DE19516780C1 (en) |
| WO (1) | WO1996035523A1 (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19533654C2 (en) * | 1995-09-12 | 1997-12-04 | Kurt Hoerger | Hydrodynamic tool for cleaning pipes and channels |
| DE59607422D1 (en) * | 1996-11-07 | 2001-09-06 | Kurt Hoerger | Hydrodynamic tool for cleaning pipes and channels |
| DE19805374C2 (en) | 1998-02-11 | 2000-03-23 | Richard Siedler | Cleaning bodies for pipes and sewer systems |
| DE19915413B4 (en) * | 1998-04-07 | 2014-08-07 | Emilia Steinicke | Nozzle body for a cleaning device |
| DE19913728C1 (en) * | 1999-03-26 | 2000-10-26 | Lufthansa Technik Ag | Pipe cleaning nozzle |
| US7011158B2 (en) * | 2003-09-05 | 2006-03-14 | Jerry Wayne Noles, Jr., legal representative | Method and apparatus for well bore cleaning |
| ES2355292T3 (en) * | 2005-06-20 | 2011-03-24 | Hammelmann Maschinenfabrik Gmbh | TOBERA AND PROCEDURE FOR THE MECHANIZATION OF A LOWER SPACE OF A WORK PIECE. |
| US7559362B2 (en) * | 2007-02-23 | 2009-07-14 | Miner Daniel P | Downhole flow reversal apparatus |
| SE531509C2 (en) | 2007-08-31 | 2009-05-05 | Bo Larsson Med Bl Consult Bo L | Hydrodynamic nozzle |
| DE202008006034U1 (en) | 2008-05-02 | 2009-09-10 | Simpfendörfer, Ulrich | Nozzle for a cleaning device |
| EP2288453B1 (en) | 2008-05-07 | 2018-11-21 | Hydrascan Limited | Conduit cleaning apparatus |
| IES20090473A2 (en) * | 2009-06-18 | 2011-01-05 | Aidan Francis Mullane | A sewer cleaning nozzle |
| RU2472596C1 (en) * | 2011-07-25 | 2013-01-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет"(ФГБОУ ВПО "ЯГТУ") | Pulse rotary nozzle |
| RU2494822C1 (en) * | 2012-03-27 | 2013-10-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Rotary nozzle |
| DE202012009908U1 (en) | 2012-10-17 | 2014-01-20 | USB-Düsen GmbH | Nozzle for cleaning pipes and ducts |
| DE202012010204U1 (en) | 2012-10-25 | 2014-01-30 | USB-Düsen GmbH | Nozzle for cleaning pipes and ducts |
| US11413665B2 (en) * | 2018-08-02 | 2022-08-16 | Shane D. Frost | Commercial vacuum hose clearing apparatus |
| DE102019107292A1 (en) * | 2019-03-21 | 2020-09-24 | Ecoclean Gmbh | High pressure tool and method of making a high pressure tool |
| CN110206132A (en) * | 2019-05-06 | 2019-09-06 | 常州市捷甲非开挖管道技术有限公司 | A kind of urban Underground pipeline dredging is nozzle specially used |
| RU207193U1 (en) * | 2021-06-15 | 2021-10-15 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный аграрный университет имени П.А. Столыпина" | DEVICE FOR CLEANING VACUUM MILK PIPES OF MILKING PLANTS |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE400011C (en) * | 1923-03-28 | 1924-08-11 | Gustav O A Liebau Dipl Ing | Pipe cleaning device with tools moved and driven forward by pressurized water |
| US1587194A (en) * | 1925-07-23 | 1926-06-01 | Sidney C Sladden | Self-propelling hose nozzle |
| US1628070A (en) * | 1926-05-12 | 1927-05-10 | Sidney C Sladden | Self-propelled hose nozzle |
| DE805209C (en) * | 1949-11-03 | 1951-05-10 | Otto Helm | Jet head for cleaning clogged or silted, also for extinguishing burning pipes, ducts, ducts, etc. like |
| US3656694A (en) * | 1970-12-10 | 1972-04-18 | John A Kirschke | Sewer cleaning chemical dispensing nozzles |
| DE2137627C3 (en) * | 1971-07-28 | 1974-02-14 | Ludwig-Ofag-Indugas Industrieofenanlagen Gmbh, 4300 Essen | Device for internal quenching of pipes |
| US3702685A (en) * | 1971-11-10 | 1972-11-14 | John A Kirschke | Sewer cleaning chemical dispensing nozzle |
| US3814330A (en) * | 1973-03-01 | 1974-06-04 | Mcneil Corp | Nozzle |
| US4312679A (en) * | 1978-03-27 | 1982-01-26 | Klein Sr Richard W | Method for cleaning clogged pipes |
| DE3412319C1 (en) * | 1984-04-03 | 1985-06-27 | Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg | Working tool designed as a hydraulic vortex jet nozzle |
| SE446159B (en) * | 1984-05-24 | 1986-08-18 | Bo Larsson | WANDERING HYDRODYNAMIC NOZZLE FOR PRESSURE WATER CLEANING OF WATER, WASTE AND DAYWATER PIPES |
| GB2183774B (en) * | 1984-10-17 | 1989-06-07 | Trest Juzhvodoprovod | Method and apparatus for cleaning the inner surface of a pipeline and forming a protective coating thereon |
| US4799554A (en) * | 1987-04-10 | 1989-01-24 | Otis Engineering Corporation | Pressure actuated cleaning tool |
| DE3906937A1 (en) * | 1989-03-01 | 1990-09-06 | Mannesmann Ag | METHOD AND DEVICE FOR DESCALING AND PLASTERING A WARM-PUMPED TUBE |
| SE500894C2 (en) * | 1990-10-04 | 1994-09-26 | Johan Faxon | Method and apparatus for cleaning pipelines |
| CA2075089A1 (en) * | 1992-07-31 | 1994-02-01 | Gerald Howard Lawther | Apparatus and method for removing undesired coatings from the interior of tubes |
| DE9214268U1 (en) * | 1992-10-22 | 1993-03-18 | Steinicke, Emilia, 6477 Limeshain, De | |
| SE9300645L (en) * | 1993-02-26 | 1994-08-27 | Johan Faxon | Method and apparatus for cleaning pipelines |
| US5535473A (en) * | 1994-12-05 | 1996-07-16 | Maniar; Mark A. | Drain cleaning apparatus |
-
1995
- 1995-05-11 DE DE19516780A patent/DE19516780C1/en not_active Expired - Lifetime
-
1996
- 1996-05-04 WO PCT/DE1996/000825 patent/WO1996035523A1/en active Application Filing
- 1996-05-04 DE DE59602768T patent/DE59602768D1/en not_active Expired - Lifetime
- 1996-05-04 EP EP96107047A patent/EP0742053B1/en not_active Expired - Lifetime
-
1997
- 1997-06-30 US US08/917,579 patent/US5992432A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO1996035523A1 (en) | 1996-11-14 |
| DE59602768D1 (en) | 1999-09-23 |
| US5992432A (en) | 1999-11-30 |
| EP0742053A1 (en) | 1996-11-13 |
| DE19516780C1 (en) | 1996-08-08 |
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