DE19533654C2 - Hydrodynamic tool for cleaning pipes and channels - Google Patents

Hydrodynamic tool for cleaning pipes and channels

Info

Publication number
DE19533654C2
DE19533654C2 DE1995133654 DE19533654A DE19533654C2 DE 19533654 C2 DE19533654 C2 DE 19533654C2 DE 1995133654 DE1995133654 DE 1995133654 DE 19533654 A DE19533654 A DE 19533654A DE 19533654 C2 DE19533654 C2 DE 19533654C2
Authority
DE
Germany
Prior art keywords
diameter
water
pressurized water
characterized
inlet opening
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 - Fee Related
Application number
DE1995133654
Other languages
German (de)
Other versions
DE19533654A1 (en
Inventor
Kurt Hoerger
Hans Prof Dr Lutze
Original Assignee
Kurt Hoerger
Hans Prof Dr Lutze
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 Kurt Hoerger, Hans Prof Dr Lutze filed Critical Kurt Hoerger
Priority to DE1995133654 priority Critical patent/DE19533654C2/en
Priority to PCT/DE1996/002153 priority patent/WO1998020988A1/en
Publication of DE19533654A1 publication Critical patent/DE19533654A1/en
Application granted granted Critical
Publication of DE19533654C2 publication Critical patent/DE19533654C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F9/00Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/04Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/049Cleaning 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
    • B08B9/0495Nozzles propelled by fluid jets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2209/00Details of machines or methods for cleaning hollow articles
    • B08B2209/02Details of apparatuses or methods for cleaning pipes or tubes
    • B08B2209/027Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
    • B08B2209/04Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces using cleaning devices introduced into and moved along the pipes
    • B08B2209/045Making cleaning devices buoyant within a pipeline to be cleaned

Description

The invention relates to a hydrodynamic tool for the cleaning of pipes and channels according to the generic term of the first claim. These tools are as Flow parts formed and can, for. B. sewerage cleaning nozzles or sole cleaner.

Numerous sewer cleaning nozzles are already known which a water connection as a pressurized water inlet opening and related backward recoil have openings. Due to the recoil force of the water the nozzle experiences a feed movement in the pipe or channel supply. To achieve a favorable energy efficiency to achieve settlement, the pressure loss along the Keep the flow as small as possible.

The following conditions must be guaranteed:

  • - avoid sudden sharp transitions,
  • - Make the deflection radii as large as possible,
  • - rounding off the chamfers,
  • - avoiding the impact of the flow on surfaces,
  • - diameter of the guide as large as possible,
  • - Optimal between flow velocity and Flow rate,
  • - low wall roughness (R Z <10 µm = finishing).

Only if these conditions are met will the efficiency and cleaning power of the flow-through parts be significantly increased and at the same time energy and water consumption reduced. A nozzle that has already been optimized in terms of flow technology is described in WO 85/05295 A1. 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. Due to the impact of the liquid flow on the baffle surface, an unsteady cross-sectional constriction arises after the flow theory, which already considerably reduces the efficiency. In addition, there is the pressure and form resistance of the baffle plate, which leads to a further reduction in efficiency. This less than optimal fluidic design weakens the axial pressure of the emerging water jet and thus the cleaning effect. In contrast, a considerable improvement is achieved with the nozzle shown in FIG. 4. The water is led through channels (hoses) in a large radius to the pressure water outlet openings. This minimizes turbulence and keeps the beams focused for a longer period, which significantly improves cleaning performance. The water bypass also reduces pressure losses. It is disadvantageous that the water is circulated through hoses that have an inadequate service life. Other sewer cleaning devices work according to a similar principle as the sewer cleaning nozzles, which also have a technically unfavorable flow of water and the associated performance restrictions.

The object of the invention is a hydrodynamic Tool for cleaning pipes and ducts too develop that the highest possible efficiency and maximum cleaning power with minimum energy guaranteed use and a long service life guaranteed.

This task is characterized by the characteristics of the first Pa claim and the other features in the sub claims solved.

The hydrodynamic tools are as flow parts trained and have a pressurized water inlet opening on the water channels with the pressurized water openings is connected.  

The water channels from the hose connection (pressurized water in opening) to the pressurized water outlet openings trained without a paragraph and have one largest possible radius. The direction of curvature of the The radius of the water channels is opposite to that Pressure water inlet opening inclined. The water channels slidingly join the pressurized water inlet opening and go partially in this connection area into each other. Every water channel has a circle shaped cross section and starts at the print water inlet that they are with the innermost point their diameter in the center and with the extreme Point of their diameter on the outside diameter of the pressure water inlet opening connects. This will in Area of transition from the pressurized water inlet opening to the water channels a conical Water divider formed by the invention Connection of the water channels and through their jacket surface has a segment-like subdivision. The Basically, segments have the radius of Water channels on. When pressurized water enters Opening with a relatively large diameter of the hose finally the diameter of the pressure tapers water inlet opening up to the position at which connect the water channels. The rejuvenation is there preferably conical or funnel-shaped. The water channels can in their connection area  the pressurized water inlet opening enlarged Have a diameter that extends to the deepest Point of radius of curvature to the diameter that the Water flow then steadily until the pressure water outlet has opening, tapered. Overall, this makes one continuous funnel-shaped feed from the Pressurized water inlet opening for the respective water supply and pressure water outlet opening created. The pressure water outlet openings are in the beam angle α im Comparison to the longitudinal axis of the hydrodynamic tool inclined. Furthermore is in the pressurized water inlets for screwing in reflex nozzles Thread provided. Assign the reflective nozzles Screw head on, are in the pressurized water lowering holes for lowering the head arranged. Depending on how far the pressurized water outlet openings according to their beam angle Thread diameter and the countersink in the tool body protrude, the water channels either go with the End of the radius into the pressurized water outlet openings or run from the end of the radius in a straight line Area and at an angle α to the pressurized water step openings. The water channels bind in this way the pressurized water outlet openings that after Ein do not screw the blasting nozzles discontinuously Cross-sectional changes are formed. The straight linige area of the water supply or the pressurized water  outlet openings essentially close tangent to the radius of the water supply.

The hydrodynamic tools are preferably as Castings trained because their interior design by Casting is technologically advantageous. Of the The core of the casting will be in the future Geometry of the pressure water inlet opening, the water flow stations and the pressurized water outlet openings. If an additional ballast space is required, this will be done another core is provided in the mold. Wall roughness less than 10 µm to minimize the pipe friction values are, for example, by the application an investment casting process guaranteed.

As a material for the hydrodynamic tools preferably a stainless cast alloy is used.

Rust protection in other cast alloys can be caused by Anti-rust paint or other types of coating, such as. B. galvanizing can be achieved.

By completely eliminating discontinuous changes in cross-section and shape resistance with the new and elegant interior design of the Tools become shock losses and turbulent flows reduced to almost zero, the efficiency in Comparison to conventional hydrodynamic tools Similar design significantly increased and the flow technical behavior significantly improved.

The following advantages are still achieved:

  • - reduction of energy and water consumption,
  • - increase in cleaning power,
  • - long life span.

With the solution according to the invention, for the first time Tool for hydrodynamic cleaning of pipes and Channels created, which all the above Grant advantages accomplishes.

The invention is based on an embodiment example and associated drawings explained in more detail. Show it:

Fig. 1: plan view of a Kanalreinigungsdüse 1

Fig. 2: sewer cleaning nozzle 1 in a sectional view along the line X acc. Fig. 1

Fig. 2a: detail (top view) of the distribution cone along the line Z acc. Fig. 2

Fig. 2b: Perspective view of Fig. 2a.

Fig. 3: Kanalreinigungsdüse 1 in a sectional view with additional cavity 7

Fig. 4: Perspective view of a core 17 for casting a Kanalreinigungsdüse 1

Fig. 5: course of the axial pressure PK in the liquid jet jet.

The view of a sewer cleaning nozzle 1 with a pressurized water inlet opening 2 , which is connected via eight water guides 3 to the eight pressurized water outlet openings 4 , is shown in FIGS. 1 and 2. In Fig. 1 the plan view of the nozzle body and in Fig. 2 is a longitudinal section along the line X acc. Fig. 1 shown. At the pressurized water inlet opening 2 with the hose connection 2 a , the eight water guides 3 slide in, which form the connection to the pressurized water outlet openings 4 . The Druckwasseraus outlet openings 4 have alternating different radiation angles α₁ and α₂ and are on different circles T 1 and T₂. The pressurized water outlet openings 4 , which lie on the inner pitch circle T₁ have a smaller radiation angle α₁ than the pressurized water outlet openings 4 on the outer pitch circle T₂. The greater the angle of inclination and thus the radiation angle α is chosen, the further in the direction of the outer diameter D of the sewer cleaning nozzle 1 are the partial circles T 1 and T 2 . According to the desired requirement profile, the number of pressurized water outlet openings 4 is determined, the 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 deflection radius r of the water channels 3 must be selected.

Since in this embodiment the pressurized water inlet opening 2 has a relatively large thread for the hose connection 2 a , its diameter decreases conically up to the water ducts 3 up to the diameter d E. The water channels have the largest possible deflection radius r and go into the Druckwasserein entry opening 2 that all with the most inner point of their diameter d W1 on the nozzle axis A and in the center M and with the outer point of their diameter d W1 on the diameter dE of the Druckwasserein entry opening 2 are present (dE = 2 × d W1 ). Since the water guides 3 in the area of the transition to the Druckwasseraus outlet opening 4 must have a defined second diameter d W2 and the small diameter dE of the pressurized water inlet opening 2 is greater than 2 × d W2 , the water guides 3 in their connection area to the pressurized water inlet opening 2 in their second diameter d W2 are expanded to the diameter d W1 so that this is d W1 = dE / 2. The funnel-shaped diameter reduction of the pressurized water inlet opening 2 and the subsequent tapering of the diameter d W1 to the second diameter d W2 of the water guides 3 is to be designed such that a continuous and steady reduction in cross-section is formed, thereby avoiding turbulence in the liquid jet.

The pressurized water outlet openings 4 with the larger beam angle α 1 protrude further into the sewer cleaning nozzle 1 than the pressurized water outlet openings 4 with the smaller beam angle α 1 . As a result, the water guides 3 go into the pressurized water outlet openings 4 with the larger radiation angle α₂ in their radius r and lead to the pressurized water outlet openings 4 with the smaller radiation angle α₁ from the end of the radius r in a rectilinear area 3. G and at an angle α 1. The rectilinear area 3. G and the pressurized water outlet openings 4 with the radiation wave α 2 connect tangentially to the radius r of the water channels 3 . The pressurized water outlet openings 4 advantageously have 5 recesses 4.1 and a thread 4.2 for screwing in radiation nozzles. The sectional view shows a pressurized water outlet opening 4 with and one without a spray nozzle 5 . The water guides 3 bind to the pressurized water outlet openings 4 that no discontinuous cross-sectional changes, especially after screwing in the jet nozzles 5 are formed.

Characterized in that the water guides 3 to start in the middle of the pressurized water inlet opening 2, there merge into one another and r in the radius direction of its curvature of the pressurized water inlet opening 2 entgegenge is set, leading to the outside, is formed in Anbindungs the water guides 3 to the Druckwasserein opening 2 a conical water divider 6 with segmented division. This water divider 6 is shown in FIG. 2a in a top view as a detail from FIG. 2. Shows a perspective view of Fig. 2b. Another advantage according to the invention is the arrangement of an additional cavity 7 in the sewer cleaning nozzle 1 ( FIG. 3). This cavity 7 lies in the direction of movement in front of the water ducts 3 and is closed at its end opposite the pressurized water inlet opening 2 with a screw plug 8 (shown schematically). Lead granulate, sand, water or a sand / water mixture can be filled into this cavity.

This makes it possible for the first time to vary the weight of the sewer cleaning nozzle 1 in accordance with the pump output. The duct cleaning nozzle 1 in FIG. 3 has a relatively small pressurized water inlet opening 2 with a hose connection 2 a in the form of a thread and also tapers to the start of the water ducts 3 . The water channels 3 do not have an enlarged diameter d W1 in the area of the connection to the pressurized water inlet opening 2 , but have the second diameter d W2 over the entire length (d W1 = d W2 ).

In continuation of the idea of the new design of the sewer cleaning nozzles 1 , other tools for the hydrodynamic cleaning of pipes and sewers as castings can also be equipped with the new water supply and, if necessary, with an additional cavity for changing the weight.

The hydrodynamic tool is manufactured preferably by pouring, as this method is the most Technologically most favorable variant for the production of the Tools is. The rust protection can be done by a Surface protection such as anti-rust paint or Galvanize or by using a stainless steel Cast alloy can be guaranteed. With the application an investment casting process, it is possible to roughen the wall to reduce to less than 10 µm so that the Pipe friction coefficient is minimized.

In FIG. 4, the core 17 is shown for a mold, the water supply 3 a Kanalreinigungsdüse. 1 The pressurized water outlet openings 4 and the water guides 3 are arranged in a circle, the water guides 3 run together in a star shape in the center of the pressurized water inlet opening 2 and slide over them, the water guides 3 partially interlocking. At the pressurized water inlet opening 2 , the water ducts 3 connect in a deflection radius r, the direction of curvature and size of which is selected in such a way that the lowest possible resistance in terms of flow technology arises.

The core of other hydrodynamic tools is designed analogously, however the areas for the pressurized water inlet 2 , the water guides 3 and the pressurized water outlet openings 4 are arranged in relation to one another as required by the future design of the base body (e.g. pressurized water outlet openings not in part circles but in several levels, different beam angles, etc.). This inventive connection of the water ducts 3 to the pressurized water inlet opening 2 , their large deflection radius r and the continuous transition to the pressurized water outlet openings 4 extend the continuous flow area or increase the axial pressure PK in the core zone K and the axial pressure PH in the main area H ( Fig. 5).

By increasing the axial pressure PK, the Rei cleaning effect of the hydrodynamic according to the invention Tools compared to conventional sewerage cleaning nozzles or sole cleaners of a similar design significantly improved.

Reference list

1 sewer cleaning nozzle
2 pressurized water inlet
2 a hose connection
3 water channels
3. G straight line of the water channels
4 pressurized water outlet openings
5 blasting nozzles
6 conical water dividers
7 cavity
8 screw plug
16 ballast material
17 core
A nozzle axis
D outer diameter
H main area
K core zone
M center line
P K axial pressure in the area of the core zone
P H axial pressure in the area of the main area
d E diameter of the pressurized water inlet opening ( 2 ) in the area of the connection of the water channels ( 3 )
d W1 diameter of the water ducts ( 3 ) following the pressure water inlet opening ( 2 )
d W2 diameter of the water duct ( 3 ) following the pressure water outlet opening ( 4 )
r turning radius
A, α₁, α₂ beam angle

Claims (8)

1. Hydrodynamic tool for cleaning pipes and ducts with a connection for a water hose as pressurized water inlet opening (2) and Druckwasseraus openings (4) on the side of the water connection, wherein the pressurized water inlet opening (2) with the pressurized water outlet openings (4) via water channels ( 3 ) is connected in the form of channels with a circular cross-section and radiation nozzles can be screwed into the pressurized water outlet openings and the water guides ( 3 ) have the largest possible deflection radius, the direction of curvature of the deflecting radius (r) of the pressurized water inlet opening ( 2 ) being opposite, and the water guides (3) according to the arrangement of the pressurized water outlet openings (4) either to the end of its opening (4) pass over return radius (r) or with a rectilinear portion (3 g) and the angle (α) in the respective Druckwasseraus, characterized in that
  • - That the water guides slide into the pressurized water inlet opening ( 2 ) and partially merge into each other, with at least two water guides ( 3 ) with the innermost point of their diameter (d W1 ) in the center (M) and with the outermost point of their diameter (d W1 ) rest on the outside diameter (d E ) of the pressurized water inlet opening ( 2 ).
2. Hydrodynamic tool according to claim 1, characterized in that the rectilinear region ( 3 G) of the water guides ( 3 ) and the pressurized water outlet openings ( 4 ) connect substantially tangentially to the deflection radius (r).
3. Hydrodynamic tool according to claim 1 or 2, characterized in that the Druckwasserein entry opening ( 2 ) with a hose connection ( 2 a ), the diameter of which is greater than twice the diameter (d W1 ) of the water guide ( 3 ), except for the twice the diameter (d W1 ) of the water supply ( 3 ) tapers.
4. Hydrodynamic tool according to one of claims 1 to 3, characterized in that the water guides ( 3 ) in their diameter (d W1 ) to a second diameter (d W2 ) in the connection area of the pressurized water outlet openings ( 4 ) taper.
5. Hydrodynamic tool according to claim 4, characterized in that the reduction of the diameter (d W1 ) to the second diameter (d W2 ) is completed in the region of the most distant position of the deflection radius (r).
6. Hydrodynamic tool according to one of claims 1 to 5, characterized in that the hydrodynamic Tool is designed as a casting.
7. Hydrodynamic tool according to claim 6, characterized characterized in that the material is a rust-free cast alloy Application.
8. Hydrodynamic tool according to one of claims 1 to 7, characterized in that the hydrodynamic tool to ensure low wall roughness of the water guides ( 3 ) is designed as an investment casting.
DE1995133654 1995-09-12 1995-09-12 Hydrodynamic tool for cleaning pipes and channels Expired - Fee Related DE19533654C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1995133654 DE19533654C2 (en) 1995-09-12 1995-09-12 Hydrodynamic tool for cleaning pipes and channels
PCT/DE1996/002153 WO1998020988A1 (en) 1995-09-12 1996-11-08 Hydrodynamic tool for cleaning pipes and ducts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995133654 DE19533654C2 (en) 1995-09-12 1995-09-12 Hydrodynamic tool for cleaning pipes and channels
PCT/DE1996/002153 WO1998020988A1 (en) 1995-09-12 1996-11-08 Hydrodynamic tool for cleaning pipes and ducts

Publications (2)

Publication Number Publication Date
DE19533654A1 DE19533654A1 (en) 1997-03-20
DE19533654C2 true DE19533654C2 (en) 1997-12-04

Family

ID=25962866

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995133654 Expired - Fee Related DE19533654C2 (en) 1995-09-12 1995-09-12 Hydrodynamic tool for cleaning pipes and channels

Country Status (2)

Country Link
DE (1) DE19533654C2 (en)
WO (1) WO1998020988A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19805374A1 (en) * 1998-02-11 1999-08-19 Siedler Cleaning bodies for pipes and sewer systems
RU2494822C1 (en) * 2012-03-27 2013-10-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" Rotary nozzle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656694A (en) * 1970-12-10 1972-04-18 John A Kirschke Sewer cleaning chemical dispensing nozzles
DE2846756C3 (en) * 1978-10-27 1982-01-28 Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg, De
SE446159B (en) * 1984-05-24 1986-08-18 Bo Larsson Wandering hydrodynamic nozzle for tryckvattenrengoring of water, wastewater and storm water lines
DE3502916A1 (en) * 1985-01-29 1986-07-31 Hans Ziegenhagen Device for cleaning a pipe, channel or the like, in particular sewer pipe, sewer or the like
US5435854A (en) * 1990-08-10 1995-07-25 Pipeline Sewer Services, Inc. Pipe cleaning modules and systems and methods for their use
DE9214268U1 (en) * 1992-10-22 1993-03-18 Steinicke, Emilia, 6477 Limeshain, De
DE19516780C1 (en) * 1995-05-11 1996-08-08 Kurt Hoerger Hydrodynamic cleaning nozzle for pipes and canals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19805374A1 (en) * 1998-02-11 1999-08-19 Siedler Cleaning bodies for pipes and sewer systems
DE19805374C2 (en) * 1998-02-11 2000-03-23 Richard Siedler Cleaning bodies for pipes and sewer systems
RU2494822C1 (en) * 2012-03-27 2013-10-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" Rotary nozzle

Also Published As

Publication number Publication date
DE19533654A1 (en) 1997-03-20
WO1998020988A1 (en) 1998-05-22

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Effective date: 20120403