EP2827975A2 - System and method for starting up stirring machines in a sediment - Google Patents
System and method for starting up stirring machines in a sedimentInfo
- Publication number
- EP2827975A2 EP2827975A2 EP13717159.1A EP13717159A EP2827975A2 EP 2827975 A2 EP2827975 A2 EP 2827975A2 EP 13717159 A EP13717159 A EP 13717159A EP 2827975 A2 EP2827975 A2 EP 2827975A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- flushing
- agitator
- sediment
- agitators
- pump
- 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
Links
- 239000013049 sediment Substances 0.000 title claims abstract description 60
- 238000003756 stirring Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000011010 flushing procedure Methods 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 13
- 238000004062 sedimentation Methods 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 238000005243 fluidization Methods 0.000 claims description 6
- 239000012526 feed medium Substances 0.000 abstract 1
- 238000010926 purge Methods 0.000 description 25
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- 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
- B01F23/50—Mixing liquids with solids
-
- 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
-
- 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
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
- B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
- B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
- B01F27/906—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms with fixed axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/402—Mixers using gas or liquid agitation, e.g. with air supply tubes comprising supplementary stirring elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/402—Mixers using gas or liquid agitation, e.g. with air supply tubes comprising supplementary stirring elements
- B01F33/4021—Mixers using gas or liquid agitation, e.g. with air supply tubes comprising supplementary stirring elements the gas being introduced through the shaft of the stirring element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/406—Mixers using gas or liquid agitation, e.g. with air supply tubes in receptacles with gas supply only at the bottom
-
- 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
- B01F35/10—Maintenance of mixers
-
- 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
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
- B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
-
- 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
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
- B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
- B01F35/1453—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids by means of jets of fluid, e.g. air
-
- 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
- B01F35/2112—Level of material in a container or the position or shape of the upper surface of the material
-
- 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
- B01F35/2113—Pressure
-
- 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
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/32005—Type of drive
- B01F35/3204—Motor driven, i.e. by means of an electric or IC motor
-
- 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
- B01F35/60—Safety arrangements
- B01F35/605—Safety devices concerning the operation of the mixer
-
- 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
- B01F23/02—Maintaining the aggregation state of the mixed materials
- B01F23/023—Preventing sedimentation, conglomeration or agglomeration of solid ingredients during or after mixing by maintaining mixed ingredients in movement
-
- 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
- B01F23/50—Mixing liquids with solids
- B01F23/58—Mixing liquids with solids characterised by the nature of the liquid
- B01F23/581—Mixing liquids with solids, slurries or sludge, for obtaining a diluted slurry
Definitions
- the present invention relates to a system and method for the controlled start-up of agitators in a sediment.
- One or more stirring devices can be operated simultaneously or alternately, so that there is no settling of solids.
- providing emergency generators for many large agitators is associated with high investment costs.
- An intermittent operation of several agitators offers the advantage that the emergency power supply can be made smaller, but has the disadvantage that the reconnection of an agitator only works when the settling times are sufficiently long. For example, it also forms for large containers with a filling height of 10 to 20 m and a high particle sinking speed of 1 to 10 cm / sec, the sediment can be harvested within a few to a few minutes.
- No. 7,331,704 B2 describes a draft tube arrangement with a stirrer.
- the stirrer is arranged so that it is above the sediment in case of standstill.
- the guide tube is slotted at the bottom to allow easy flushing.
- DE 34 42 294 A1 describes a device for homogenizing and suspending solids in a basin.
- a pneumatic and / or hydraulic traction aid is provided which facilitates sedimentation of the stirring blades with sedimented solids.
- the traction help consists of pumps and nozzles. It is described how by means of the pumps and the nozzles by sucking liquid from the upper region of a slurry and pushing this liquid through corresponding pipelines and pumps through the nozzles in the lower Beckeh Scheme or container area can be made a loosening of the sediment and the agitator be driven only after sufficient loosening of the sediment.
- the system for the controlled start-up of agitators in a sediment comprises: a container for receiving substances to be processed; a stirrer device with stirrer blades for stirring the working substances in the container; a rinsing device; and a device for operating agitators.
- the rinsing device is arranged and adapted to supply means for rinsing the sediment to a sediment formed.
- the rinsing device is designed as required in different ways.
- a control is provided which causes a controlled re-commissioning of agitators after flushing.
- the rinsing agent is liquid.
- the purging device in particular has a pump and supply lines through which the pump pumps the means for purging.
- the supply lines are in particular designed such that they lead the means for purging under or to the R.
- the supply lines have in particular channels and outlets, which are part of the stirring organ leaves.
- a tubular stirrer which is connected to the supply lines and whose purge tubes are directed substantially parallel and in alignment with the stirrer blades to the outside, preferably sits on the shaft end below the free-to-tumble stirrer.
- the supply lines may also have free spouts, which are in such a defined position to the Rlickorgancen that the means for rinsing enters the vicinity of the Rlickorgan stricture.
- the agitator preferably stops at a defined angular position with respect to the free spins.
- a wave catch ring is preferably provided, which supports the shaft bearing the Rhackorgan criticism; to avoid mechanical bending of the shaft when starting, in which a maximum engine torque is required.
- the wave collecting ring is advantageously connected together with the free spins to a common, mechanically robust structure.
- the control with means for measuring a sedimentation height, i. a settled amount of solid, or a level of a clear mirror provided.
- the device for measuring measures a density or a pressure difference.
- the device for measuring can also be designed such that it calculates a settled amount of solids from physical values of the suspension by calculation.
- the agitator operating device preferably operates stirrers in response to the determined sedimentation level.
- the drive motor of the agitator is particularly frequency-controlled operable and the agitator is preferably ramped up via a ramp time.
- the system may comprise a plurality of agitators, wherein an emergency generator is provided which operates at least one of the agitators intermittently.
- the pump is preferably a circulation pump which circulates the purge means within the container while maintaining the existing pressure.
- the circulation pump is in particular a pump which is used in normal operation for conveying suspension.
- the purging pump is preferably put into operation a short time after a failure of agitators.
- an emergency generator is preferably provided which supplies power to the pump of the purging device.
- an intermediate container is preferably provided, which is arranged above a Sedimentations Abu and is filled if necessary by means of the pump with the means for rinsing, which is provided for brief flushing available.
- the device for operating stirrers is put into operation in particular with a time delay after a predetermined time for putting the flushing device into operation.
- controller is also preferably provided with means for measuring pressure and / or volumetric flow in the supply lines to provide flushing results.
- An agitator is preferably restarted in accordance with the flushing results obtained by the means for measuring pressure and / or flow in the supply lines.
- a method is carried out by means of a control, which method has the following successive steps: after detecting a failure of an agitator with agitator motor with concomitant sedimentation of substances to be processed received in the container Sponges are laved sponges in supply lines with the flushing means; the sediment is fluidized by flushing with compressed air or the flushing means; while maintaining fluidization, the agitator is started up in reversing operation; the fluidization is stops and reversing operation continues; the operation of the agitator is stopped briefly and the agitator motor is switched to the standard direction of rotation; and then the agitator is operated in normal operation. The operation of the stirrer in normal operation takes place for a certain time while monitoring the operation by means of the controller.
- the system for starting agitators in a sediment according to the present invention is particularly simple and universally applicable. By means of the control, a controlled restart of agitators takes place.
- Fig. 1 shows a first embodiment of a system according to the invention for the controlled start-up of agitators in a sediment
- FIG. 2 shows a more detailed illustration of the first embodiment shown in Fig. 1;
- FIG. 3 is a further detailed representation of the first shown in Figure 1
- Embodiment shows
- Fig. 4 shows a second embodiment of a system according to the invention for the controlled start-up of agitators in a sediment
- FIG. 5 shows a third embodiment of a system according to the invention for the controlled start-up of agitators in a sediment.
- Figures 1, 4 and 5 each show an embodiment of a system for the controlled start-up of agitators in a sediment according to the present invention.
- the system has in each case a container 1 for receiving substances to be processed, an agitator device with stirrer blades 3 for stirring the substances to be processed in the container 1, a purging device and a device 2 for operating agitators.
- the rinsing device is arranged and adapted to supply means for rinsing away the sediment to a sediment formed.
- the purging device has, in particular, a pump 4, not shown in FIGS. 1, 4 and 5, and at least one supply line 6, through which the pump 4 pumps the means for purging.
- the flushing device is designed in different ways as needed and will be explained in more detail with reference to the figures.
- a sediment height is denoted by 8 and a clear liquid level is denoted by 9.
- the flushing means is preferably liquid. It is possible that fluid from the clear mirror 9, which is drawn off from the pump 4 and supplied to the at least one supply line 6, is used as the means for rinsing free. When using the liquid above the sediment, i. from the clear mirror 9, a continuous rinsing is possible without the container 1 is overfilled.
- a device for measuring a sedimentation height 8, ie a settled amount of solid, or a height of a clear mirror 9 is furthermore preferably provided.
- the device for measuring measures a density or a pressure difference.
- the device for measuring can also be designed such that it calculates a settled amount of solids from physical values of the suspension by calculation.
- the device 2 for operating agitators preferably puts stirrers into operation as a function of the determined sedimentation height 9.
- a drive motor of the agitator as a device 2 for operating agitators is in particular frequency-controlled operable and the agitator is preferably ramped up via a ramp time.
- the system may comprise a plurality of agitators, wherein preferably an emergency generator is provided, which operates at least one of the agitators intermittently.
- the purging pump 4 is preferably a circulation pump that circulates the purging means within the container 1 while maintaining the existing pressure.
- a circulation pump in particular a pump can be used, which is used in normal operation for conveying suspension.
- the pump 4 of the purging device is preferably put into operation shortly after a failure of agitators. It is particularly advantageous that in a pressurized container 1, the circulation pump does not have to build up the internal pressure, but only circulates the medium within the pressure chamber. In addition, it is advantageous if the pump 4 starts in case of failure of the agitator. The maximum time until the pump starts up should be such that the flushing holes are not yet covered with sediment when they are below the sediment.
- an emergency generator is preferably provided, which supplies power to the pump 4 of the purging device.
- an emergency generator for the pump 4 is sufficient, the connected load can be sized smaller by a factor of 2 to 10 than the power of the agitator motor 2.
- the fact that only the pump 4 of the purging device is to be supplied with power, thus becomes a Electricity demand in the case of an operating stoppage reduced.
- an intermediate container 5 is preferably provided, which is arranged above a sedimentation height 8 and if necessary by means of the pump 4 is filled with the means for free-spooling and from which then the means for rinsing gradually or "abruptly "is led to the sediment.
- the device 2 for operating agitators i. the drive motor is put into operation, in particular, with a time delay after a predetermined time has elapsed after the purging device has been put into operation.
- means are preferably provided for measuring pressure and / or volumetric flow in the supply lines 6 to provide flushing results.
- An agitator is preferably put into operation again in accordance with the control 10, shown in FIG. 3, with means for measuring pressure p and / or volumetric flow in the at least one supply line 6.
- the at least one supply line 6 is in particular designed such that it leads the flushing means below or to the agitator blades 3.
- the at least one supply line 6 may have free spins which are in such a defined position to the agitator blades 3, that the means for purging reaches the vicinity of the Rlickorganmind 3.
- the agitator preferably stops at a defined angular position with respect to the free spins.
- FIG 2 the embodiment shown in Figure 1 is shown in more detail.
- the device 2 for operating the agitator, the agitator blades 3 and the supply lines 6 of the rinsing device, a pump 4 is shown, the liquid that removes the clear liquid level 9 and then the supply lines 6 supplies.
- a wave catching ring 20 which supports the agitator blades 3 supporting shaft; to avoid mechanical bending of the shaft when starting, in which a maximum engine torque is required.
- the wave catching ring 20 is advantageously connected together with the free spreaders 6 to a common mechanically robust structure 30.
- FIG. 3 shows a further, more detailed illustration of the embodiment shown in FIG.
- an intermediate container 5 is shown in which the clear liquid level 9 pumped liquid can be stored until it is needed. Whether the liquid is needed is determined by a controller 10 including a measuring technique designated p for measuring pressure and / or volumetric flow in the at least one supply line 6 and measuring the level F of the intermediate container 5. Also shown is a check valve 12 controlled by the controller 10 for controlling a flow of liquid from the surge tank 5 to the supply lines.
- p a measuring technique designated p for measuring pressure and / or volumetric flow in the at least one supply line 6 and measuring the level F of the intermediate container 5.
- a check valve 12 controlled by the controller 10 for controlling a flow of liquid from the surge tank 5 to the supply lines.
- the system for starting agitators in the sediment can be configured flexibly and as required.
- the pump 4, the intermediate container 5 and the controller 10 (with measuring technology, etc.) are not only provided or can be provided in the embodiment of the present invention shown in FIG. 1, but also that shown in FIGS 4 and 5 embodiments of the present invention with the pump 4, the intermediate container 5 and the controller 10 (with measurement technology, etc.) are equipped or can be equipped.
- a supply line 6 is shown as free spins, in which the means for rinsing in the direction of the arrow shown by means of the pump 4 of the rinsing device is introduced.
- the flushing means is then pumped through the free-spreader lance, which first extends at the inner edge of the container 1, angled at the bottom of the container towards the center of the container 1 and then angled in the center of the container 1 at its bottom in the upward direction and until just below the Rrockorganmind 3 runs.
- a tubular stirrer 7 connected to the supply line 6, the rinsing tubes of which are oriented essentially parallel and in alignment with the stirrer blades 3 to the outside.
- the supply line 6 can also be led to the agitator blades 3, where the flushing means can be delivered to channels and outlets, which are part of the Rlickorgangen 3.
- the agitator blades 3 are to be provided with channels and outlets.
- FIG. 5 shows a system with a plurality of stirring elements with stirrer blades 3.
- two stirrers are shown in the sediment below the sediment level 8, and the other two stirrers are shown above the sediment, but below the clear liquid level 9.
- a flushing means is supplied in the same manner as already described with reference to FIG. Different from FIG. 1, however, the means for purging are supplied by the two free-spouts 6 slightly above the agitator blades 3.
- a tube 1 1 shown, in the direction of darg Senateen arrow means for flushing is supplied.
- the purging means may be supplied by the intermediate container shown in FIG.
- the tube 11 runs down the inner wall of the container 1 towards the bottom of the container 1, is angled slightly above the bottom towards the center of the container 1 and extends in the center of the container in an upward direction to the center of the stirring member angled.
- the means for purging is discharged into channels, which are located in the Rlickorganstoryn 3. From there, the means for purging is discharged through outlets on the stirrer blades 3 in the sediment.
- a purging means is supplied to the sediment at two locations where stirring bodies are located in the sediment. Thus, both stirring elements located in the sediment can be flushed out.
- 6 additional free spouts can be installed as supply lines.
- an already existing aeration system which is supplied with the means for flushing and serves for a short time as a flushing device. It is also advantageous to mechanically decelerate and position the stirring element so that it comes to a standstill at a defined position, where the free spreaders 6 are also arranged above the agitator blades 3 and the flushing agent stream therefore strikes the agitator blades 3 directly.
- a method is carried out in which after detecting a failure of an agitator with agitator motor with concomitant sedimentation of recorded in the container to be processed substances, the lances are sporadically flushed in supply lines with the means for flushing.
- the sediment is fluidized by flushing with compressed air or the flushing means.
- the agitator is started up in reversing operation.
- the fluidization is stopped and the reversing operation is continued.
- the operation of the agitator is stopped briefly and the agitator motor is switched to the standard direction of rotation.
- the agitator is operated in normal operation.
- the operation of the stirrer in normal operation is carried out for a certain time while monitoring the operation by means of the controller and its facilities for measuring.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Accessories For Mixers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012006001 | 2012-03-23 | ||
PCT/EP2013/000846 WO2013139477A2 (en) | 2012-03-23 | 2013-03-20 | System and method for starting up stirring machines in a sediment |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2827975A2 true EP2827975A2 (en) | 2015-01-28 |
EP2827975B1 EP2827975B1 (en) | 2016-05-18 |
Family
ID=48141889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13717159.1A Not-in-force EP2827975B1 (en) | 2012-03-23 | 2013-03-20 | System and method for starting up stirring machines in a sediment |
Country Status (8)
Country | Link |
---|---|
US (1) | US10252227B2 (en) |
EP (1) | EP2827975B1 (en) |
AU (1) | AU2013234754B2 (en) |
CA (1) | CA2866951A1 (en) |
DE (1) | DE102013004827A1 (en) |
RU (1) | RU2614274C2 (en) |
WO (1) | WO2013139477A2 (en) |
ZA (1) | ZA201406153B (en) |
Cited By (1)
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CN111359545A (en) * | 2020-02-28 | 2020-07-03 | 江苏三安消防设备有限公司 | Efficient stirring equipment for producing water-based extinguishing agent and working mode of efficient stirring equipment |
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RU2614274C2 (en) | 2012-03-23 | 2017-03-24 | Экато Рюр- Унд Миштехник Гмбх | System and method of mixers motion start in sediment |
CN105148769A (en) * | 2015-10-19 | 2015-12-16 | 攀钢集团工程技术有限公司 | Mineral pulp stirring tank back-flushing device |
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CN113171696A (en) * | 2021-04-26 | 2021-07-27 | 苏州绚彩百科纺织科技股份有限公司 | Automatic detect clearance type circulation stirring formula textile auxiliary storage box |
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2013
- 2013-03-20 RU RU2014142574A patent/RU2614274C2/en not_active IP Right Cessation
- 2013-03-20 EP EP13717159.1A patent/EP2827975B1/en not_active Not-in-force
- 2013-03-20 CA CA2866951A patent/CA2866951A1/en not_active Abandoned
- 2013-03-20 WO PCT/EP2013/000846 patent/WO2013139477A2/en active Application Filing
- 2013-03-20 US US14/387,113 patent/US10252227B2/en not_active Expired - Fee Related
- 2013-03-20 AU AU2013234754A patent/AU2013234754B2/en not_active Ceased
- 2013-03-20 DE DE102013004827A patent/DE102013004827A1/en not_active Ceased
-
2014
- 2014-08-21 ZA ZA2014/06153A patent/ZA201406153B/en unknown
Non-Patent Citations (1)
Title |
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See references of WO2013139477A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111359545A (en) * | 2020-02-28 | 2020-07-03 | 江苏三安消防设备有限公司 | Efficient stirring equipment for producing water-based extinguishing agent and working mode of efficient stirring equipment |
Also Published As
Publication number | Publication date |
---|---|
RU2614274C2 (en) | 2017-03-24 |
WO2013139477A3 (en) | 2013-12-05 |
AU2013234754B2 (en) | 2017-08-31 |
EP2827975B1 (en) | 2016-05-18 |
WO2013139477A2 (en) | 2013-09-26 |
RU2014142574A (en) | 2016-05-20 |
US20150085598A1 (en) | 2015-03-26 |
AU2013234754A1 (en) | 2014-09-18 |
DE102013004827A1 (en) | 2013-09-26 |
ZA201406153B (en) | 2015-11-25 |
CA2866951A1 (en) | 2013-09-26 |
US10252227B2 (en) | 2019-04-09 |
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