EP2428287A1 - Dispositif et procédé de nettoyage et/ou d'aération d'un récipient à liquide - Google Patents

Dispositif et procédé de nettoyage et/ou d'aération d'un récipient à liquide Download PDF

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Publication number
EP2428287A1
EP2428287A1 EP11170310A EP11170310A EP2428287A1 EP 2428287 A1 EP2428287 A1 EP 2428287A1 EP 11170310 A EP11170310 A EP 11170310A EP 11170310 A EP11170310 A EP 11170310A EP 2428287 A1 EP2428287 A1 EP 2428287A1
Authority
EP
European Patent Office
Prior art keywords
section
nozzle
constriction
elements
cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11170310A
Other languages
German (de)
English (en)
Inventor
Christoph Jäger
Peter Szlama
Rolf Witzel
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.)
KSB SE and Co KGaA
Original Assignee
KSB AG
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 KSB AG filed Critical KSB AG
Publication of EP2428287A1 publication Critical patent/EP2428287A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/214—Measuring characterised by the means for measuring
    • 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 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
    • B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3125—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characteristics of the Venturi parts
    • B01F25/31251—Throats
    • B01F25/312511—Adjustable Venturi throat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/54—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle provided with a pump inside the receptacle to recirculate the material within the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2111—Flow rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/2201—Control or regulation characterised by the type of control technique used
    • B01F35/2202—Controlling the mixing process by feed-back, i.e. a measured parameter of the mixture is measured, compared with the set-value and the feed values are corrected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/22—Control or regulation
    • B01F35/222—Control or regulation of the operation of the driving system, e.g. torque, speed or power of motors; of the position of mixing devices or elements
    • 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 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0933—Removing sludge or the like from tank bottoms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening

Definitions

  • the invention relates to a device for cleaning and / or aeration of a device which serves to receive and temporarily store contaminated liquid, wherein the device comprises one or more units, which suck in liquid located in the device and in the form of a nozzle-like constriction deploying a jet generated by a pipeline into the device.
  • the invention relates to a method for cleaning and / or ventilation of the device with such a device.
  • cleaning devices or systems which are equipped with pumps which suck the liquid of the device, in particular designed as a container, and convey back via one or more pipelines in the device.
  • pipe sections equipped with injector nozzles can be provided, into which outside air is sucked into the delivery jet of the centrifugal pump so as to achieve aeration and an improvement in the cleaning performance at the bottom of the device.
  • Such cleaning devices are inter alia by the DE 199 55 424 C2 and the EP 1 039 053 B1 known. They are preferably used in dirty water tanks, rain overflow basins and storage channels. Because it is loaded with suspended matter for cleaning and / or ventilation in the respective facility Use water, there is a risk that bottlenecks in the flow of water, so especially the nozzles are clogged by accumulating dirt. The process of constipation is usually insidious. Since the parts of the device for cleaning and / or ventilation which are susceptible to clogging are located below the water level which is present at least temporarily, it is not always possible to inspect by eye. Therefore, a blockage is often recognized only when a complete closure has already occurred. The result is a total failure of the cleaning device.
  • a method and a device for monitoring a cleaning system is known in which already impending disturbances are detected.
  • the flow behavior of the liquid is monitored within the liquid flow generated by an aggregate.
  • the monitoring of the liquid flow is based on the jet generated by the aggregate, the suction behavior of the centrifugal pump in the intake or the flow behavior of the liquid is monitored in the fed by the centrifugal pump by suction or pressure piping when using a centrifugal pump as jet-emitting unit.
  • the flow behavior is monitored by sensors. Due to their signals, various operating conditions, including any blockage, detected.
  • a piece of cleaning is arranged in each of a constriction, in particular a nozzle, upstream pipe area.
  • a constriction in particular a nozzle, upstream pipe area.
  • the stated object is achieved in that are arranged in the region of the constriction means for changing the throat cross-section. Thereby If necessary, a larger passage cross section can be released at a constriction located in the flow path. A blockage created at the bottleneck can thus pass the bottleneck. Since the change during operation of the Vorrich device for cleaning and / or ventilation of basins, containers, channels or similar devices to remove a blockage are not taken out of service. A maintenance is accordingly fast and with little effort feasible.
  • the device has means for automatic cross-sectional change.
  • a change in the cross section of the nozzle-like constriction takes place automatically, ie without controlling intervention of a control unit.
  • This variant is to be emphasized in terms of their low implementation effort, but requires different design variants for different applications.
  • standing under mechanical prestressing leaf spring elements have proven that abut each other in normal operation and at this occurring pressure conditions in the flow path to each other that a certain nozzle-like bottleneck is formed for beam generation.
  • the leaf spring elements continue to be such that they give way in the event of a possible blockage under the then prevailing pressure conditions, so that the clogging sediments can pass through the flow path.
  • the design of the leaf spring preload can be done by calculations or experiments for the respective cleaning devices.
  • a device has means which respectively monitor the flow behavior of the liquid within the liquid stream generated by an aggregate, and an evaluation unit which detects different operating states and controls a cross-sectional change of the bottleneck depending on an operating state.
  • operating conditions in particular "Flawless flow”, “Partial clogging” and “malfunction / constipation” are provided.
  • the evaluation unit controls a change in the passage cross section of the bottleneck.
  • the evaluation unit can to control actuators and / or actuators or include these.
  • Various means are provided for monitoring the flow behavior of the liquid within a liquid flow generated by an aggregate, such as monitoring the liquid flow using the jet generated by the aggregate, monitoring the suction behavior of the centrifugal pump in the intake region or the flow behavior when using a centrifugal pump as a jet emitting unit the liquid in the piping supplied by the centrifugal pump by suction or pressure.
  • needs-based control and adaptation of the passage cross-section are carried out. A detection of a constipation situation can be followed directly by their elimination. A time-consuming shutdown of the system and cleaning of the pipe route by hand by possibly provided cleaning openings is saved.
  • the means for changing the constriction cross section specify a certain passage cross section in normal operation and, in particular in the case of a possible blockage, a larger cross section is releasable.
  • a constriction of the flow path in normal operation for example, define a desired nozzle cross-section. By eliminating the constriction, a flow path is extended in constipation case. It is also provided that the throat cross-section through the evaluation in one step is completely, in several stages or infinitely adjustable. By measuring and monitoring the flow behavior of the liquid, the control intervention of the evaluation unit of the respective constipation situation is customizable.
  • the means for changing the constriction cross-section completely shut off a flow path.
  • the means for changing the constriction cross-section completely shut off a flow path.
  • the nozzle-like constriction is formed of a plurality of elements.
  • the elements may be formed overlapping or interlocking.
  • the nozzle-like bottleneck can be formed from cup-shaped elements.
  • cup-shaped elements are designed such that they can be brought together to form a nozzle-like constriction or that they can abut each other.
  • Two semi-circular in cross-section shell parts can thus form a circular cross-section.
  • a nozzle-like constriction such as a Venturi nozzle.
  • the nozzle-like bottleneck may consist of elements that are designed like flaps.
  • connecting elements can be provided, which, in particular when the passage cross-section is open, prevent accumulation of sediments between the shell elements. A consequent jamming in a subsequent closing operation of the passage cross-section is thus prevented.
  • the elements can also be covered with elastic material. It is ideal if the elastic material is mechanically tensioned at certain passage cross-sections, for example when the nozzle is open or unopened.
  • the nozzle-like constriction can also have a deformable wall.
  • a nozzle wall may have differently shaped slots.
  • a nozzle wall may be formed by folds and / or strips disposed between a nozzle inlet and a nozzle exit.
  • a deformation of the nozzle can be achieved for example by an opposite rotation of the nozzle inlet and nozzle outlet.
  • the constriction is formed by an insert body arranged in the pipeline.
  • the insert body consists of elastic material.
  • the insert body of elastic material can be brought by suitable adjusting devices and / or actuating elements in a form which forms a nozzle-like constriction by a corresponding constriction of the flow cross-section.
  • an insert body according to the invention is an elastic membrane fastened to a pipe wall, which can be subjected to compressed air or ambient pressure from its side facing away from the flow.
  • a membrane can be designed in its shape and elasticity such that a suitable nozzle shape, such as a Venturi nozzle, can be imitated.
  • spring elements are provided which act on the nozzle-like constriction and / or their elements.
  • Prestressed spring elements can act on one or more elements of the nozzle-like bottleneck such that they rest in a form-fitting manner in normal operation, whereby a nozzle-like constriction is formed.
  • the spring elements yield under the then acting, higher pipeline pressure and release a larger cross-section.
  • the device according to the invention comprises spring elements which exert controlled spring forces on the nozzle-like constriction and / or their elements and so causes an opening of the passage cross-section and / or a closing thereof.
  • the device has a control unit for opening and closing the passage cross-section.
  • the device may comprise means for electrical, pneumatic and / or hydraulic opening and closing of the passage cross-section.
  • an air pressure control is provided, which does the opening and closing of the cross section of the nozzle-like constriction by means of compressed air.
  • Another embodiment includes heatable elements made of a shape memory alloy by means of which the opening and closing of the passage cross-section by a, in particular temperature change-induced, change in shape takes place and a unit for controlling the same.
  • shape memory alloys for example, nickel-titanium, copper-zinc-aluminum and iron-manganese-silicon are known. Such memory metals are subjected to certain thermo-mechanical treatment cycles prior to their use, in which so-called diffusionless phase transformations take place. After such "training", a shape memory alloy can "remember” two forms - one at high and one at low temperature. The shape transformation of the material is based on a temperature-dependent lattice transformation between austenitic and martensitic crystal structure. Shape memory alloys can transmit comparatively large forces with long service life as adjusting elements.
  • the nozzle-like constriction and / or their elements consist of a shape memory alloy as well as that the memory metals indirectly cause opening and closing of the passage cross-section.
  • a design has proven to be reliable, according to which movably guided actuating elements act on the nozzle-like constriction and / or their elements in such a way that a change in the passage cross-section takes place.
  • An embodiment is advantageous, according to which a cartridge-type unit provided with connection means is inserted into a pipeline section and within the unit the nozzle-like constriction is formed.
  • a preassembled cartridge which includes means for forming and / or changing a nozzle-like throat cross section
  • an injector tube of a cleaning and / or ventilating device or installation retrofitting of existing devices or systems can take place. There is simply an exchange with the original nozzle.
  • the cartridge has connection means, as connecting flanges, for connection to a pipe section.
  • a connection can be provided for means for opening and closing the passage cross-section, such as electrical, pneumatic or hydraulic actuating device or for other actuating devices and / or actuating elements.
  • a method for cleaning and / or ventilating a device mentioned above provides that, during operation of the device for cleaning and / or ventilation, the passage cross section of the nozzle-like constriction is changed as needed.
  • the cross-sectional change can take place automatically, whereby certain pipe conditions, such as pressure conditions, lead without control from the outside to a cross-sectional change.
  • a method in which the flow behavior of the liquid is monitored in each case within the liquid flow generated by an aggregate, various operating states are detected and the passage cross section is changed as a function of the operating state.
  • FIG. 1 shows a on the bottom 1 of a - not shown - rain overflow basin arranged centrifugal pump 2 with a suction tube 3, via which it sucks water from the basin.
  • the pressurized by the centrifugal pump 2 water is conveyed back through a pipe 4, a cleaning piece 5, an injector nozzle 6 and a jet pipe 7 in the basin.
  • air is sucked into the injector nozzle 6 via an air suction pipe 8, which projects beyond the highest possible water level of the tank, and mixed with the pumped water.
  • the jet pipe 7 a water-air mixture.
  • the existing during operation of the centrifugal pump 2 flow is monitored. This happens because an ultrasonic signal is sent into the flowing liquid, reflected there and collected again in the sensor. A measured value formed from the signal provides information about the flow velocity.
  • the cleaning piece 5 is equipped with a flow sensor. Since the flow in the pipe 4 is influenced not only by possible blockages at the injector nozzle 6, but also changes in the entire delivery region of the centrifugal pump 2, the flow sensor detects 10 also elsewhere, so for example in the intake 9 occurring interference.
  • the flow sensor 10 transmits the respective operating state to an evaluation unit 12 for evaluation of the sensor signals, for display and control.
  • the evaluation unit 12 distinguishes between different operating states such as faultless operation, partial blockage or malfunction which these visually and / or acoustically reports.
  • any other device for example a computer, may also be used.
  • the evaluation unit 12 has a control unit 13.
  • a control unit 13 In the region of the bottleneck formed by the injector nozzle 6 are - shown here in a schematic representation - means 14 for changing the throat cross-section, ie the passage cross-section of the injector nozzle 6.
  • These means 14 for changing the throat cross section are on a means 14 for changing the throat cross section acting adjusting device 15 is connected via a line 16 to the evaluation unit 12.
  • the adjusting device 15 does not have to be present separately, but can also be integrated in the evaluation unit 12 or in the means 14 for changing the bottleneck section. It may be an electric, pneumatic or hydraulic adjusting device. Alternatively, heatable actuating elements made of a shape memory alloy can also be used.
  • the nozzle 6 itself or the nozzle 6 forming elements are made of a memory alloy.
  • the nozzle 6 can also be controlled directly by the evaluation unit 12 with its control unit 13, for example by the evaluation unit 12 encapsulated on the nozzle 6 arranged heating elements, in particular heating PTC's, supplied with electrical voltage and / or electrical current.
  • the evaluation unit 12 controls by means of its control unit 13, the adjusting device 15, which causes opening and closing of the throat cross-section.
  • the adjusting device 15 acts on the means 14 for changing the throat cross section that they specify a certain desired nozzle cross-section of the injector nozzle 6.
  • the evaluation unit 12 usually controls the adjusting devices 15 without any time delay in such a way that a larger cross section is released by the means 14 for a certain, parameterizable or demand-controlled time period. A resulting obstruction at the nozzle 6 can thus pass the bottleneck.
  • the nozzle cross-section is reduced again to its original size. Since the opening and closing of the passage cross-section takes place during operation of the pool cleaning device, the maintenance is correspondingly fast and with little effort feasible.
  • the evaluation unit 12 Since the evaluation unit 12 already detects faults early, the cause of a fault can be remedied without much effort. Detecting a constipation situation can be followed immediately by its automatic elimination. For all cases, the cleaning piece 5 continues to provide manual access.
  • a change in cross section can also be uncontrolled, for example with preloaded spring elements which act on a nozzle or form a nozzle.
  • a designed for normal operation of a plant passage cross-section is under certain pipe conditions, such as an increased pipe pressure due to a blockage, thereby automatically increased, whereby a flow of the constipation-causing components takes place.
  • a controlled embodiment offers greater design options.
  • the opening and closing of the throat cross-section is done in various ways.
  • the nozzle 6 can be opened and / or closed, for example, in one step or in several stages.
  • the ideal degree of opening may be dependent on a particular congestion situation. It is further contemplated to support by a sequential opening and closing of the nozzle 6, the elimination of blockages by a kind of shaking function.
  • a shut-off valve such as a pinch valve
  • FIG. 2a shows an insertable into a pipe section cartridge-like nozzle unit 21 and an injector 22.
  • the injector 22 has a connection 23 for - not shown here - air intake pipe designed as a crimp fitting connection 24 for a pneumatic supply line 25 and a connecting flange 26 for connection to the cartridge insert 21 on.
  • the cartridge-like unit 21 includes a nozzle-like constriction 27.
  • the cartridge-like unit 21 as an insert body in its interior an elastic membrane 28 which is secured to the end faces of the unit 21 by means of flanges 29, 30 on the housing 31 of the unit 21.
  • the cartridge-like unit 21 additionally has a flange 32, which serves for attachment to the injector tube 22 with its connecting flange 26.
  • the flange 29 for the lateral attachment of the membrane additionally has a connection possibility, the further attachment of pipe sections or a possible according to the FIG. 1 to be arranged before the cartridge-like unit Putz Publishedes 5 - optionally provided with a flow sensor - is used. Furthermore, the cartridge-like unit 21 has connecting means 33 which serve to supply compressed air. On the side facing away from the flow of the membrane 28 two hoses 34, 35 are connected. These are supplied with compressed air during operation of the device and thus form a suitable nozzle shape.
  • FIG. 2b shows the cartridge-like unit 21 in the installed state in the injector 22.
  • the hoses 34, 35 are supplied with compressed air so that the nozzle-like constriction 27 can form for normal operation.
  • a venturi nozzle shape In a possible constipation case, an enlarged passage cross-section is releasable.
  • Such a solution is also suitable for retrofitting existing plants.
  • cleaning piece 5 with a flow sensor 36 in front of the cartridge-like unit 21, the conditions for a constipation detection are given at the same time.
  • FIGS. 2a and 2 B the means for opening and closing the passage cross-section are shown as pneumatic actuators.
  • other control devices such as electrical or hydraulic actuators or an adjusting device based on shape memory alloys are provided. It is also possible to direct the supply of compressed air directly to the side of the membrane 28 facing away from the flow and to dispense with the hoses 34, 35.
  • the FIG. 3 shows another elastic insert body 41 for arrangement in a housing 31 of a cartridge-like unit 21 according to FIGS. 2a and 2 B ,
  • the insert body 41 is made of elastic material.
  • the elastic body 41 is designed in such a way that a conical constriction of the passage cross-section 44 takes place in the flow direction.
  • 41 inwardly projecting ribs 45 are formed on the inside of the insert body, the radial extent increases in the flow direction.
  • ribs 45 perform the function of tabs which fold away, if necessary, so in the case of a blockage, by being everted to the outside.
  • the side of the insert body 41 facing away from the flow is supplied with compressed air either directly or via hoses, or the insert body 41 is acted upon according to another adjusting device.
  • the desired nozzle shape is formed.
  • an adjusting device 15 for example, pneumatically ensure that the elastic ribs 45 yield under a pipeline pressure and in this way a larger passage cross-section is free to quake.
  • the FIG. 4 shows another solution according to the invention. It shows the FIG. 4a a nozzle-like constriction 51 in normal position and the FIG. 4b shows the bottleneck 51 at enlarged passage cross section.
  • the nozzle-like constriction 51 is formed from cup-shaped elements 52, 53.
  • the shell-shaped elements 52, 53 close to each other.
  • the cup-shaped elements 52, 53 act movably guided, designed as pin elements actuators 54, 55 such that a change in the passage cross-section 51 can take place.
  • the pin members 54, 55 may be actuated by electrical, pneumatic or hydraulic actuators.
  • the adjusting devices act on the actuating elements 54, 55 such that the two shell elements 52, 53 are pressed close to each other and the nozzle-like constriction 51 according to their normal position according to FIG. 4a is trained.
  • the actuators 54, 55 are controlled so that the cup-shaped elements 52, 53 open.
  • the cup-shaped elements 52, 53 are covered by a biased elastic material such as rubber so that the elements 52, 53 abut each other.
  • the shell elements can also be completely rubberized or an elastic material can be vulcanized into the shell elements.
  • nozzle-like constriction 51 is temporarily exerted by the actuators 54, 55, a force on the shell elements 52, 53. After removing the blockage, the nozzle-like constriction 51 is closed again by the restoring force of the elastic coating.
  • the nozzle-like constriction can form several, interlocking, partially overlapping shell elements.
  • the elements are expediently held on the inlet side of the inner wall of a cartridge-like unit.
  • guides are provided on the side facing away from the flow of the shell elements.
  • the shell elements are adjustable. By twisting the rotatably arranged wire ends is a constriction or opening the passage cross-section defined by the intermeshing shell elements.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
EP11170310A 2010-07-08 2011-06-17 Dispositif et procédé de nettoyage et/ou d'aération d'un récipient à liquide Withdrawn EP2428287A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010026513A DE102010026513A1 (de) 2010-07-08 2010-07-08 Vorrichtung und Verfahren zur Reinigung und/oder Belüftung eines Flüssigkeitsbehälters

Publications (1)

Publication Number Publication Date
EP2428287A1 true EP2428287A1 (fr) 2012-03-14

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EP11170310A Withdrawn EP2428287A1 (fr) 2010-07-08 2011-06-17 Dispositif et procédé de nettoyage et/ou d'aération d'un récipient à liquide

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DE (1) DE102010026513A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN112727016A (zh) * 2020-12-29 2021-04-30 温州顺启建筑有限公司 隔断施工用水泥面抹平装置

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US9635922B2 (en) * 2014-12-18 2017-05-02 Darren Logsdon Humidification assembly

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DE19955424C2 (de) 1999-11-18 2003-03-27 Ksb Ag Einrichtung und Verfahren zur Reinigung eines der Aufnahme von verunreinigtem Wasser dienenden Behälters
EP1039053B1 (fr) 1999-03-25 2004-10-13 KSB Aktiengesellschaft Ensemble comprenant un réservoir de liquides et un dispositif pour la maintenance de la propreté du réservoir
DE102005023269A1 (de) 2005-05-20 2006-11-23 Ksb Aktiengesellschaft Verfahren und Einrichtung zur Überwachung einer Reinigungsanlage für Behälter

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US5023021A (en) * 1990-03-07 1991-06-11 Conrad Richard H Cartridge venturi
US5494585A (en) * 1992-03-02 1996-02-27 Cox; Dale W. Water remediation and purification system and method
EP1039053B1 (fr) 1999-03-25 2004-10-13 KSB Aktiengesellschaft Ensemble comprenant un réservoir de liquides et un dispositif pour la maintenance de la propreté du réservoir
DE19955424C2 (de) 1999-11-18 2003-03-27 Ksb Ag Einrichtung und Verfahren zur Reinigung eines der Aufnahme von verunreinigtem Wasser dienenden Behälters
DE102005023269A1 (de) 2005-05-20 2006-11-23 Ksb Aktiengesellschaft Verfahren und Einrichtung zur Überwachung einer Reinigungsanlage für Behälter

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Publication number Priority date Publication date Assignee Title
CN112727016A (zh) * 2020-12-29 2021-04-30 温州顺启建筑有限公司 隔断施工用水泥面抹平装置

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