EP0379882A2 - Dispositif de nettoyage de conduites - Google Patents

Dispositif de nettoyage de conduites Download PDF

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Publication number
EP0379882A2
EP0379882A2 EP90100337A EP90100337A EP0379882A2 EP 0379882 A2 EP0379882 A2 EP 0379882A2 EP 90100337 A EP90100337 A EP 90100337A EP 90100337 A EP90100337 A EP 90100337A EP 0379882 A2 EP0379882 A2 EP 0379882A2
Authority
EP
European Patent Office
Prior art keywords
valve
connection
piston
pressure relief
pressure
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.)
Granted
Application number
EP90100337A
Other languages
German (de)
English (en)
Other versions
EP0379882A3 (fr
EP0379882B1 (fr
Inventor
Friedrich Bersch
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0379882A2 publication Critical patent/EP0379882A2/fr
Publication of EP0379882A3 publication Critical patent/EP0379882A3/fr
Application granted granted Critical
Publication of EP0379882B1 publication Critical patent/EP0379882B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0551—Control mechanisms therefor
    • 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
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/057—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2642—Sensor rigid with valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7834—Valve seat or external sleeve moves to open valve

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • the pipes to be cleaned and, for this purpose, connected to one another in a circuit are connected to the connection devices of the housing, optionally via intermediate housings.
  • the cleaning liquid such as lye, acid, rinse water and disinfectant solutions
  • the cleaning liquid is fed to the four-way switch valve via the inlet connection.
  • the cleaning liquid first flows through a valve opening into the channel opening into one end face of the piston, from there through the pipes back into the other channel and via the second valve opening into the drain connection.
  • cleaning bodies designed as sponges are taken along.
  • the drain connection is in the case that rinsing water ver as cleaning liquid is connected with the normal house routine.
  • lye, acid and disinfectants these are each returned to a designated container, where they are collected and reused.
  • Such a device can be used for cleaning pipelines in breweries, wineries, dairies, lemonade factories, in the chemical industry, etc. It has now been shown that occasional damage occurs, in particular pipe screw connections loosen or even pipes burst. This is particularly the case when the device is used to clean large-sized pipes and the pipes are cleaned with a high liquid pressure.
  • the invention is therefore based on the object of specifying a device of the type described at the outset, with the aid of which the damage mentioned can be avoided with certainty.
  • the pressure relief valve It is connected to the inlet connection, that is to say, for example, arranged in the inlet line after the cleaning pump which delivers the cleaning liquid. If the liquid pressure rises above a specified setpoint, the pressure relief valve opens in the relief path provided for this purpose. In this way, pressure surges in the cleaning device and the pipes are ver avoided, which occur in particular in the switching process of the piston of the switching valve. This creates a soft switchover effect.
  • the cleaning device is easy to handle due to its compact shape.
  • the construction of the assembly can already take place in the course of the manufacture of the cleaning device, so that the assembly is immediately available at the place of use after the connection to the pipes to be cleaned.
  • the pressure relief valve is relieved via the connection space directly to the drain connection, without the need for a drain line.
  • a connection piece of the pressure relief valve is inserted into the inlet connection, the end of which projects into the connection space and sits on the part of the piston of the changeover valve on which the valve openings are located.
  • This valve connector can simply be an extension connector or a connector that acts on the valve function.
  • the simple structural design according to claim 5 enables a compact design of the pressure relief valve. It is possible that the valve connector is arranged in the sliding connector or the sliding connector in the valve connector. If the force exerted on the pressure application surface by the cleaning liquid exceeds the spring force acting in opposite directions, then this displaces the sliding connection in relation to the valve connection in the axial direction and thereby releases the relief path.
  • the limit value of the liquid pressure should be just as large be that the piston is moved from one end position to the other. It is therefore essentially based on the weight of the piston, the friction, and the pressure-effective surface on its end faces.
  • the bores can be arranged below or above the bead, via which the pressure application surface of the bead is connected to the inside of the pressure relief valve. In the event that they are arranged above the bead, the sliding connector moves axially downwards into its open position, in the other case it moves upwards.
  • the embodiment according to claim 7 allows the sliding connector and valve connector to be protected from the outside.
  • the flange housing carries connection devices via which the inlet line can be connected to the pressure relief valve.
  • the detachable connection of the flange housing to the valve housing for example via screw connections, enables the pressure relief valve to be detached from the valve housing in a simple manner for maintenance and care purposes and to be connected again therewith.
  • existing four-way switch valves can be retrofitted with a pressure relief valve.
  • the spring force can be generated by a plurality of coil springs.
  • the number and dimensions of the coil springs depend on the limit value of the liquid pressure of the cleaning liquid.
  • the preload of the springs is achieved by connecting the flange housing to the valve housing.
  • the support ring according to claim 9 increases the area on which the springs are supported outside of the guide bores in the direction of the pressure application surface. Therefore, coil springs with a larger diameter can also be used to generate the spring force. In addition, the accuracy of the centering of the guide bores does not have to be so demanding, which considerably simplifies the manufacture of the flange housing.
  • the lock according to claim 10 is of particular importance for the exact adjustment of the valve stub when the valve stub extends to the valve openings.
  • the valve socket engages, for example, in a groove or recess on the piston in the region of the valve opening and seals the valve opening in each case connected to the valve socket and therefore to the inlet line to the connection space.
  • the outer diameter of the end faces of the piston corresponds essentially to the inner diameter of the bushing of the valve housing. Between its end faces, the piston has a portion of smaller diameter, so that in this way the connection space is formed, via which a valve opening is connected to the drain connection in the socket of the valve housing.
  • valve socket sits sealingly on the flattened portion of the piston, so that the cleaning liquid is guided to one valve opening without losses.
  • the signals generated with the motion detector according to claim 13 are processed by a corresponding processing unit, which comprises a number and display or evaluation unit.
  • This motion detector enables a precise detection of the cleaning process or its Cleaning steps when the pressure relief valve opens with each changeover of the four-way changeover valve to relieve the excess pressure.
  • the number of signals when opening or closing the pressure relief valve indicates the frequency of the change of direction of the cleaning liquid and is therefore a measure of the length and intensity of the cleaning process. The monitoring that is possible in this way enables an optimal cleaning effect with minimal cleaning costs.
  • the device 1 for cleaning pipes has a four-way switch valve 2 and a pressure relief valve 3.
  • the four-way switch valve 2 consists of a housing 4 with an inlet connection 5, an outlet connection 6 and a bushing 7 for receiving a displaceable piston 8.
  • connection devices 10 for pipes not shown are arranged at opposite ends in the direction of displacement of the piston 8 that connect the pipes to the changeover valve 2.
  • the piston 8 has two valve openings 11, 12, which are each connected via a channel 13, 14 to end faces 16, 17 carrying openings 15.
  • the end faces 16, 17 of the piston 8 are sealed against the bushing 7 via sealing elements 41.
  • a connecting space 19 is formed by a radial recess 18 of the piston 8, which in the Darge set position of the piston 8 connects the drain port 6 with the valve opening 12.
  • the pressure relief valve 3 is inserted into the inlet connection 5 of the housing 4 of the changeover valve 3. It has a flange housing 21 connected to the housing 4 via a screw connection 20, in the head 22 of which guide bores 23 are provided for receiving a plurality of coil springs 24. At its free end 25, the flange housing 21 in the embodiment shown carries an external thread 26, for releasable connection to an inlet line, not shown.
  • An axially movable sliding connector 27 and a valve connector 28 are arranged in the interior 32 of the flange housing 21. In the embodiment shown, the sliding connector 27 is located in the valve connector 28.
  • the hollow cylindrical sliding connector 27 has a radially extending bead 29 on its outside and bores 30 which are also arranged radially underneath. The underside of the bead 29 forms a step with a pressure application surface 31 which extends over the bores 30 communicates with the interior 32 of the pressure relief valve 3.
  • the valve connector 28 is screwed into the inlet connection 5 of the housing 4 of the changeover valve 2 via a thread 33.
  • the lock nut 34 serves to fix and precisely adjust it.
  • the valve socket 28 carries relief openings 38 to form a relief path, which are connected to the drain port 6 via the connection space 19 in the open position of the pressure relief valve 3.
  • the sliding connector 27 has no relief opening at its lower end. In the open position of the pressure relief valve 3, the lower end 40 of the sliding connector 27 is located above the relief openings of the valve connector 28.
  • the upper end face 36 of the valve connector 28 and the upper side of the bead 29 of the sliding connector 27 are covered with a support ring 37.
  • the helical springs 24 arranged in the guide bores 23 act on the support ring 37, the pretensioning of which is achieved by the screw connection 20 between the flange housing 21 and the valve housing 4.
  • a two-part motion detector 38 is arranged in the flange housing 21 and on the support ring 37, which generates 3 pulse-shaped signals when opening and / or closing the pressure relief valve, which signals are processed in a processing system 39 and displayed.
  • the motion detector can, for example, be made in one piece, one part being arranged on the valve socket or on the support ring, the other part on the flange housing of the pressure relief valve. If it works without contact, it is, for example, optical, magnetic, electronic or inductive in nature. However, mechanical motion detectors are also possible.
  • the method of operation of the device according to the invention is as follows: a cleaning liquid under pressure is supplied to the pressure relief valve 3 through an inlet line, not shown, flows through it and flows in the illustrated end position of the piston 8 through the valve opening 11, via the channel 13, through the Openings 15 in the end face 16 of the piston 8 in the pipelines to be cleaned in the direction of the arrow and thereby take along the cleaning bodies R designed as sponges.
  • the cleaning fluid When the cleaning fluid has flowed through the pipes, it enters the channel 14 through the openings 15 of the end face 17 of the piston 8 and reaches the valve opening 12. From there it flows further via the connection space 19 to the drain connection 6.
  • the cleaning bodies R now meet on the end face 17 of the piston 8, these also close the openings 15 arranged there the consequence that the liquid pressure rises, by means of which the piston 8 is displaced into its other, not shown, end position.
  • the valve connector 28 forms a stop limiting the axial movement of the piston 8, so that the piston 8 comes to rest in an end position in which the valve connector 28 corresponds to the valve opening 12.
  • the helical springs 24 push the sliding connection 27 into its closed position and the cleaning liquid now flows through the valve opening 12 in the opposite direction through the device 1 and the pipes to be cleaned until the cleaning bodies R open the openings 15 in the Close the end face 16 of the piston 8 and the switching process described above is repeated in the opposite direction.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Safety Valves (AREA)
  • Sewage (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP90100337A 1989-01-23 1990-01-09 Dispositif de nettoyage de conduites Expired - Lifetime EP0379882B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3901829A DE3901829A1 (de) 1989-01-23 1989-01-23 Vorrichtung zum reinigen von rohrleitungen
DE3901829 1989-01-23

Publications (3)

Publication Number Publication Date
EP0379882A2 true EP0379882A2 (fr) 1990-08-01
EP0379882A3 EP0379882A3 (fr) 1991-01-09
EP0379882B1 EP0379882B1 (fr) 1993-07-28

Family

ID=6372583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100337A Expired - Lifetime EP0379882B1 (fr) 1989-01-23 1990-01-09 Dispositif de nettoyage de conduites

Country Status (6)

Country Link
US (1) US5060333A (fr)
EP (1) EP0379882B1 (fr)
AT (1) ATE91926T1 (fr)
DE (2) DE3901829A1 (fr)
DK (1) DK0379882T3 (fr)
ES (1) ES2044238T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994001228A1 (fr) * 1992-07-01 1994-01-20 Bersch, Friedrich Dispositif de nettoyage de tubes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010114479A1 (fr) * 2009-03-31 2010-10-07 Hydroball Technics Holdings Pte Ltd Système de nettoyage pour le nettoyage d'une tuyauterie
US10012318B2 (en) * 2015-03-24 2018-07-03 Parker-Hannifin Corporation Shuttle valve stabilization through pressure differential and shuttle valve with hollow poppet with weep hole

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1782136A1 (de) * 1968-07-23 1971-07-01 Friedrich Bersch Vorrichtung zum Reinigen von Rohrleitungen,insbesondere Bierleitungen
US4057072A (en) * 1976-03-04 1977-11-08 Cook James E Unloader valve

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1165455A (en) * 1914-04-09 1915-12-28 George Schlemmer Hose or like conduit cleaning device.
US2011323A (en) * 1933-02-08 1935-08-13 Premier Coil Cleaner Co Pipe and tube cleaner
US1979147A (en) * 1933-11-25 1934-10-30 Dobbelmann Emile Apparatus for cleaning beer coils or other pipes
US2087414A (en) * 1935-05-09 1937-07-20 Schaer Eugene Coil cleaning device
US2746250A (en) * 1952-06-17 1956-05-22 North American Aviation Inc Venturi control device for aircraft brake system
DE1775673A1 (de) * 1968-09-09 1971-09-09 Shell Int Research Automatische Molchfalle
US3633615A (en) * 1970-03-18 1972-01-11 Sun Oil Co Delaware Control system
US3908688A (en) * 1973-06-08 1975-09-30 Ebenhard S Gandrud Speed adjustment control for a fluid motor
US3896280A (en) * 1974-03-13 1975-07-22 Us Army Valve position indicator
US4403627A (en) * 1980-07-22 1983-09-13 Bradley Gerald R Buffer valve
DE3347004C1 (de) * 1983-12-24 1985-06-05 Friedrich 5401 Halsenbach Bersch Vorrichtung zur Reinigung von Rohrleitungen,insbesondere Schankleitungen
DE3701572A1 (de) * 1987-01-21 1988-08-04 Danfoss As Druckbegrenzungsventil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1782136A1 (de) * 1968-07-23 1971-07-01 Friedrich Bersch Vorrichtung zum Reinigen von Rohrleitungen,insbesondere Bierleitungen
US4057072A (en) * 1976-03-04 1977-11-08 Cook James E Unloader valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994001228A1 (fr) * 1992-07-01 1994-01-20 Bersch, Friedrich Dispositif de nettoyage de tubes

Also Published As

Publication number Publication date
EP0379882A3 (fr) 1991-01-09
US5060333A (en) 1991-10-29
DE59002046D1 (de) 1993-09-02
DE3901829C2 (fr) 1991-05-29
DE3901829A1 (de) 1990-08-02
EP0379882B1 (fr) 1993-07-28
ES2044238T3 (es) 1994-01-01
DK0379882T3 (da) 1993-11-15
ATE91926T1 (de) 1993-08-15

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