EP2639459B1 - Pompe pour suspensions fixes et liquides - Google Patents
Pompe pour suspensions fixes et liquides Download PDFInfo
- Publication number
- EP2639459B1 EP2639459B1 EP20120159309 EP12159309A EP2639459B1 EP 2639459 B1 EP2639459 B1 EP 2639459B1 EP 20120159309 EP20120159309 EP 20120159309 EP 12159309 A EP12159309 A EP 12159309A EP 2639459 B1 EP2639459 B1 EP 2639459B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- acceleration chamber
- conveying device
- wings
- toilet
- 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.)
- Not-in-force
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
- E03D9/10—Waste-disintegrating apparatus combined with the bowl
Definitions
- the invention relates to a conveying device for liquid-solid suspensions, in particular for waste water from a toilet, with the feature of the preamble of independent claim 1.
- the lower rotor At a distance from the cutting blades lies the lower rotor.
- the rotor blades of the lower rotor ensure a further reduction of the solids in the wastewater and for an acceleration of the wastewater down.
- the wings accelerate the wastewater in the circumferential direction and radially to the common drive shaft.
- a toilet system especially for mobile use in a mobile home, a caravan or a boat, known.
- This toilet installation has a conveyor for wastewater from a toilet.
- the wastewater enters an acceleration chamber whose free cross-section is widened with respect to the inlet.
- the wastewater then impinges in the acceleration chamber on a rotor driven about a vertical rotor axis, which essentially spans the free cross section of the acceleration chamber with its rotor blades.
- the rotor blades adjoin one another in the circumferential direction around the rotor axis. They are designed to accelerate the wastewater down and thereby crush the solids contained in the wastewater.
- the drive of the rotor is designed for a comparatively high speed of 2,500 to 2,800 rpm.
- the bottom of the acceleration chamber located below the rotor is formed helically and terminates in a tangentially outgoing drain for the wastewater.
- the upper edge of the boundary of the sequence represents a disturbing edge on which solids can be deposited, which lead to a blockage of the process and / or to a blocking of the rotor.
- a method and apparatus for pumping fibrous suspensions are disclosed in which larger solids of the suspension are comminuted by two rotors arranged on a common drive.
- the first rotor is arranged in the region of the inlet and extends into the region of a supply container.
- the first rotor has ribs which do not extend over the entire radius of the inlet.
- the region of the inlet, in which the first rotor is arranged has no circular cross-section, but is narrowed, for example, by fixed and radially inwardly projecting ribs.
- the second rotor is arranged in the region of an acceleration chamber, which widens bell-shaped from the inlet.
- the second rotor is formed as an impeller, an acceleration of the suspension in the radial direction and thus in the direction of the flow is achieved.
- the US 5,039,320 A relates to a device for liquefying, degassing and pumping a suspension of fibrous cellulosic material.
- the device has for this purpose two rotors arranged one behind the other, which are arranged in an acceleration chamber.
- the first of the two rotors which extends over a region of the inlet into a reservoir, has wings with a smaller diameter than the wings of the second rotor, thereby freeing up more space for larger solids, which then successively first through the first rotor and then crushed by the second rotor.
- a centrifugal pump in which the wings of a rotor, which is basically arranged in an acceleration chamber, into the Continue the range of an inlet to the acceleration chamber. This is intended to ensure that larger solids do not settle between wings in the region of the acceleration chamber, but are already acted upon by the effect of the wings in the region of the inlet in the direction of the process.
- further vanes may be disposed between the elongate vanes which extend only over the area of the accelerator chamber. All wings end at a distance in front of the wall of the acceleration chamber, so that there is a free space between the wings and the wall of the acceleration chamber. This is to counteract settling of solids between the wings and the wall.
- the invention has for its object to show a delivery device for liquid-solid suspensions, in which the risk of blockages by larger solids construction is significantly reduced.
- Claim 20 is directed to a toilet with a conveying device according to the invention.
- a conveying device for liquid-solid suspensions, in particular for wastewater from a toilet, has an acceleration chamber, a first rotor driven in the acceleration chamber about a rotor axis, which has a plurality of vanes, whose two main directions extend axially and radially to the rotor axis, and a The second rotor rotatably driven about the rotor axis, the rotor having rotor blades aligned radially with respect to the rotor axis.
- An inlet for the wastewater opens axially with respect to the rotor axis in the acceleration chamber.
- the acceleration chamber widens bell-shaped from the inlet of the inlet.
- the first rotor is disposed on the upstream side of the second rotor, wherein the blades of the first rotor have a free distance to an inner wall of the acceleration chamber of at least 33% of the maximum radial extent of the wings.
- the effluent for the wastewater is tangential with respect to the rotor axis of the acceleration chamber.
- the first rotor which faces the mouth of the inlet into the acceleration chamber, has a comparatively large free distance to the next inner wall of the acceleration chamber.
- this free distance to the inner wall of the here bell-shaped widening acceleration chamber remains substantially the same, and one of the wings of the axial inlet facing the first rotor swept volume is correspondingly rounded.
- the rotor rotates about the rotor axis, it causes a centrifugal force on the effluent entering the accelerating chamber, which distributes the effluent and the solids contained therein over the entire cross section of the accelerating chamber.
- a rotational drive direction of the rotors about the rotor axis is reversible. What is important is actually only the reversibility of the rotational drive direction of the second rotor with the rotor blades, because only through this rotational drive direction reversal, the conveying direction of the conveyor device according to the invention in relation to the flow of waste water from the acceleration chamber is reversed.
- the function of the inflow of the wastewater into the acceleration chamber facing first rotor is essentially independent of its direction of rotation.
- the direction of rotation can be triggered manually in the conveyor device according to the invention by pressing an actuator when, for example, the user acoustically that a rotary drive for the rotors does not reach the usual speed or optically determines that the sewage is no longer connected from one to the conveyor Toilet is sucked off.
- the actuation of the actuating element preferably triggers the reverse rotation of the rotors for a predetermined period of time and the subsequent renewed switching over to the normal direction of rotation of the rotors.
- the reverse operation of the rotors can also be triggered automatically by a controller as needed, for example, if an increase in the current at which an electric motor is operated as a rotary drive for the rotors, is determined.
- a change in the current can, for. B. interpreted as an indication of an increased power consumption, which in turn is an indication of a clogging of the acceleration chamber.
- the reversing operation can also be carried out regularly, for example, in the case of using the conveyor device according to the invention for the waste water from a toilet in the context of each toilet flush.
- a rotor axis in the axial direction promoting moment and a pronounced turbulence of the liquid-solid suspension in the acceleration chamber during reverse rotation of the rotors is obtained by the rotor blades are aligned with their main extension planes inclined relative to its plane of rotation about the rotor axis. They are in the same direction and equally inclined, so that there is a rotationally symmetrical arrangement of the rotor blades in their entirety. An additional inclination of the rotor blades to the rotor axis is possible, but not necessary.
- first rotor and the second have a common rotary drive. Even with a common rotary drive still different directions of rotation and speeds can be realized by an effective between the two rotors gear.
- the first rotor and the second rotor are rotatably connected together. In particular, it can be two regions of a rigid component, which is also referred to here as a rotor unit. This component can be manufactured in a single production step.
- the leading edge and the trailing edge of each rotor blade are preferably formed as cutting edges, wherein it forms with the edge formed as a cutting edge solids in the liquid-solid suspension at Run the rotor in the normal Ab representativecardi and with the trailing edge formed as a cutting edge solids split during reverse.
- the rotor blades in the circumferential direction around the rotor axis preferably at a distance which is at least the maximum width the rotor blades corresponds, and the number of rotor blades is not greater than six. Preferably, it is between three and five. Most preferably, four rotor blades are provided.
- the number of blades of the other rotor is preferably the same as the number of rotor blades, d. H. it is two to six, preferably three to five and most preferably also four.
- a maximum outer circumference of the vanes is preferably the same size as an outer circumference of a hub of the rotor, from which the rotor blades protrude radially.
- the annular or circular surfaces swept over by the rotor blades and the blades do not overlap.
- the free distance of the wings in the conveying device according to the invention from the inner wall of the acceleration chamber makes up at least one third of the maximum radial extent of the wings.
- this free distance is at least 50%, more preferably 100% of the maximum radial extent of the wings.
- the rotor with the wings also determines the flow through this space. This applies at least if it, as it is provided in the conveying device according to the invention, with rotational speeds of the order of 2,000 U / min and more is driven.
- the outflow for the wastewater from the acceleration chamber preferably lies on the side of the second rotor facing away from the inlet with the rotor blades, ie not on the outer circumference of this rotor. This improves the cleaning effect of the rotor with the rotor blades with respect to solids that can be deposited at the outlet of the process from the acceleration chamber, and the reverse rotation of the rotor with the rotor blades are detected not only by the tips of the rotor blades, but their entire cutting edges.
- a labyrinth seal may be provided between the second rotor and an adjacent inner wall of the acceleration chamber to prevent the penetration of solid components into the area of a passage for a drive shaft for the rotors into the acceleration chamber. This is particularly avoided that fibrous objects penetrate to the drive shaft of the second rotor and to be wound on this.
- the inflow to the accelerating chamber may be at the lowest point of a toilet bowl of the toilet.
- the conveyor is then provided in a toilet, which is not a water closet with a water-filled U-tube. This is a prerequisite that the toilet on the one hand gets along with little flushing water and on the other hand, the risk of spilling water during heavy movements of the toilet, such as on board a ship is avoided.
- Fig. 1 shows a conveying device 1 for a liquid-solid suspension 2, which passes via an inlet 3 from above into an acceleration chamber 4.
- a Rotor unit 5 is arranged in the acceleration chamber 4 in the acceleration chamber 4 .
- the rotor unit 5 can be driven with a rotary drive not shown in the figures about a vertical rotor axis 6, in both directions of rotation about the rotor axis 6.
- the rotor unit 5 is in Fig. 2 shown separately and comprises two in the direction of the rotor axis 6 successively connected rotors 7 and 8.
- the inlet 3 facing rotor 7 has four wings 9, which extend with their main directions of extension axially and radially to the rotor axis 6.
- the maximum diameter of the rotor 7 with the wings 9 is the same size as the diameter of a hub 10 of the rotor 8, protrude from the four rotor blades 11 radially.
- the wings 9 fall approximately in the region of trailing edges 12 of the rotor blades 11, which rise from these trailing edges to leading edges 13.
- the rotor blades 11 are set with their main extension planes relative to their plane of rotation about the rotor axis 6.
- the rotor 7 with the wings 9 has a free distance with respect to an inner wall 14 of the acceleration chamber 4 flared bell-shaped from the inlet 3, which is about as large as the maximum radius of the rotor 7.
- the rotor blades 11, however, are sufficient Tips close to the inner wall 14 of the acceleration chamber 4, and their distance to an underlying end face 15 of the acceleration chamber is small above a drain 16, so that the entrained flow of the rotor blades in this sequence 16 occurs.
- the reaching into the acceleration chamber 4 liquid-solid suspension 2 passes at rotating rotor unit 5 initially in the area of action of the wings 9 of the rotor 7 and is accelerated by them in the radial direction, d. H. distributed over the entire horizontal cross section of the acceleration chamber 4.
- the inner wall 14 of the here bell-shaped acceleration chamber 4 deflects the flow down into the area of the rotor blades 11 of the rotor 8.
- the rotor blades 11 further accelerate the flow downwards and in the circumferential direction about the rotor axis 6 into the outlet 16.
- the high-speed rotor blades 11 divide larger solids in the liquid-solid suspension, which otherwise might not enter the drain 16 without clogging. From the drain 16, the liquid-solid suspension 2 typically exits into a tank or other storage container.
- Fig. 3 shows the lower part of the acceleration chamber 4 with the front side 15.
- This end face 15 is formed helically, wherein it merges into the drain 16 at its lowest point.
- the upper boundary of the outlet 16 represents a disturbing edge 17, at which solids can be deposited.
- Fig. 4 shows a toilet 18 with a conveyor 1 according to Fig. 1
- the inlet 3 at the lowest point of the toilet bowl 19 connects, and by driving the rotor unit 5 in the acceleration chamber 4 of the conveyor 1, the toilet bowl 19 can be completely sucked out, as for toilets in vehicles, at where a water seal is associated with the risk of spilling water, is preferred.
- the toilet 18 shown here is an odor trap by water.
- the water level is below the inlet 3 from the toilet bowl 19 and above the drain 16 from the acceleration chamber 4 and thus in a lower lying, Outside of the visible area of the toilet 18.
- a backwashing of solids in the visible area of the toilet bowl 19 is thus prevented even with shocks.
- the backward rotation of the rotor unit 5 to eliminate blockages by solids can be automatically triggered by an electronic control of the rotary drive for the rotor unit 5, also not shown here. But it can also be triggered by pressing a switch or any other actuator by the user of the toilet 18.
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Crushing And Pulverization Processes (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
Claims (13)
- Pompe (1) pour suspensions fixes et liquides (2), en particulier pour les eaux usées d'une toilette (18), comprenant:- une chambre d'accélération (4),- un premier rotor (7) entraîné en rotation autour d'un axe de rotor (6) dans la chambre d'accélération (4), qui présente plusieurs ailettes (9) dont les deux principales directions d'extension s'étendent dans le sens axial et radial par rapport à l'axe de rotor (6),- un deuxième rotor (8) entraîné en rotation autour de l'axe de rotor (6) dans la chambre d'accélération (4), qui présente plusieurs pales de rotor (11) orientées dans le sens radial par rapport à l'axe de rotor (6),- une arrivée (3) débouchant dans la chambre d'accélération (4) dans le sens axial par rapport à l'axe de rotor (6),- une sortie (16) partant de la chambre d'accélération (4) dans le sens tangentiel par rapport à l'axe de rotor (6),- étant entendu que la chambre d'accélération (4) s'élargit en forme de cloche à partir de l'embouchure de l'arrivée (3),- étant entendu que le premier rotor (7) est agencé sur le côté du deuxième rotor (8) dirigé vers l'arrivée, et- étant entendu que les ailettes (9) du premier rotor (7) présentent une distance libre par rapport à une paroi intérieure (14) de la chambre d'accélération (4) d'au moins 33 % de l'extension radiale maximale des ailettes (9),
caractérisée:- en ce que le premier rotor (7) est tourné vers l'embouchure de l'arrivée dans la chambre d'accélération (4),- en ce que les pales de rotor (11) du deuxième rotor sont installées de façon inclinée avec leurs principaux plans d'extension dans le même sens par rapport à leur plan de rotation autour de l'axe de rotor (6),- en ce qu'une direction d'entraînement en rotation d'au moins un des rotors (7, 8) autour de l'axe de rotor (6) peut être inversée. - Pompe (1) selon la revendication 1, caractérisée en ce que le premier rotor (7) et le deuxième rotor (8) présentent un entraînement de rotation commun, étant entendu qu'en option, le premier rotor (7) et le deuxième rotor (8) sont reliés l'un avec l'autre de façon résistante à la torsion.
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce que les pales de rotor (11) présentent, dans la direction périphérique autour de l'axe de rotor (6), une distance qui correspond au moins à la largeur maximale des pales de rotor (11).
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce que le nombre de pales de rotor est compris entre 2 et 6, de préférence entre 3 et 5, et en ce que le nombre d'ailettes (9) s'étendant dans le sens radial à partir de l'axe de rotor (6) est compris entre 2 et 6, de préférence entre 3 et 5, étant entendu qu'en option, le nombre de pales de rotor (11) et le nombre d'ailettes (9) sont identiques.
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce qu'une circonférence extérieure maximale des ailettes (9) est identique à une circonférence extérieure d'un moyeu (10) du deuxième rotor (8) à partir duquel les pales de rotor (11) s'étendent dans le sens radial.
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce qu'un volume parcouru par les ailettes (9) du premier rotor (7) est arrondi.
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce que la distance libre des ailettes (9) par rapport à la paroi intérieure (14) de la chambre d'accélération s'élève à au moins 50 %, et de préférence à 100 %, de l'extension radiale maximale des ailettes (9).
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce qu'une vitesse de rotation à laquelle les rotors sont entraînés en rotation s'élève à au moins 1 500 tr/min., et de préférence à au moins 2 000 tr/min.
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce que la sortie (16) part de la chambre d'accélération (4) sur le côté du deuxième rotor (8) opposé à l'arrivée (3).
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce qu'une surface frontale axiale (15) de la chambre d'accélération (4) présente, sur le côté du deuxième rotor (8) tourné vers la sortie (16), une section de guidage formant une spirale autour de l'axe de rotor (6) qui se termine par un saut de la surface frontale (15) dans la zone duquel la sortie (16) part de la chambre d'accélération (4).
- Pompe (1) selon l'une des revendications précédentes, caractérisée en ce qu'un joint labyrinthe (21) est formé entre le deuxième rotor (8) et une paroi intérieure adjacente (20) de la chambre d'accélération (4).
- Toilette (18) comprenant une pompe (1) selon l'une des revendications précédentes, caractérisée en ce que l'arrivée (13) dans la chambre d'accélération (4) se situe au point le plus bas d'une cuvette de toilette (19).
- Toilette (18) selon la revendication 12, caractérisée en ce qu'il est prévu une commande qui inverse automatiquement la direction d'entraînement en rotation pendant et/ou après chaque processus de chasse de la toilette lorsque les rotors (7, 8) bloquent dans la direction d'entraînement en rotation précédente.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20120159309 EP2639459B1 (fr) | 2012-03-13 | 2012-03-13 | Pompe pour suspensions fixes et liquides |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20120159309 EP2639459B1 (fr) | 2012-03-13 | 2012-03-13 | Pompe pour suspensions fixes et liquides |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2639459A1 EP2639459A1 (fr) | 2013-09-18 |
EP2639459B1 true EP2639459B1 (fr) | 2014-04-30 |
Family
ID=45887933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120159309 Not-in-force EP2639459B1 (fr) | 2012-03-13 | 2012-03-13 | Pompe pour suspensions fixes et liquides |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2639459B1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2032008A5 (fr) | 1969-02-14 | 1970-11-20 | Lecat Roger | |
US4780053A (en) * | 1978-04-10 | 1988-10-25 | Johan Gullichsen | Method and apparatus for pumping fiber suspensions |
SE467466B (sv) * | 1989-03-29 | 1992-07-20 | Kamyr Ab | Apparat foer fluidisering, gasavskiljning och pumpning av en suspension av fiberhaltigt cellulosamaterial, samt dess anvaendning |
SE520740C2 (sv) * | 1998-06-30 | 2003-08-19 | Abs Pump Prod Ab | Centrifugalpump |
EP1464764A1 (fr) | 2003-03-24 | 2004-10-06 | Thomas Warnecke | WC avec cuvette |
-
2012
- 2012-03-13 EP EP20120159309 patent/EP2639459B1/fr not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
EP2639459A1 (fr) | 2013-09-18 |
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