EP0306030B1 - Dispositif pour la production en continu d'un mélange fluide de solides et liquides - Google Patents

Dispositif pour la production en continu d'un mélange fluide de solides et liquides Download PDF

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Publication number
EP0306030B1
EP0306030B1 EP88114330A EP88114330A EP0306030B1 EP 0306030 B1 EP0306030 B1 EP 0306030B1 EP 88114330 A EP88114330 A EP 88114330A EP 88114330 A EP88114330 A EP 88114330A EP 0306030 B1 EP0306030 B1 EP 0306030B1
Authority
EP
European Patent Office
Prior art keywords
pump
line
chamber
control valve
funnel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88114330A
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German (de)
English (en)
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EP0306030A1 (fr
Inventor
Hans Dipl.-Ing. Fey
Manfred Czapiewski
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.)
Matra Werke GmbH
Original Assignee
Matra Werke GmbH
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
Priority claimed from DE19873729527 external-priority patent/DE3729527A1/de
Application filed by Matra Werke GmbH filed Critical Matra Werke GmbH
Priority to AT88114330T priority Critical patent/ATE85237T1/de
Publication of EP0306030A1 publication Critical patent/EP0306030A1/fr
Application granted granted Critical
Publication of EP0306030B1 publication Critical patent/EP0306030B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • 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
    • B01F23/59—Mixing systems, i.e. flow charts or diagrams

Definitions

  • the invention relates to a device for the continuous production of a liquid mixture of solids and liquids with a rotationally symmetrical space with at least approximately vertical axis of rotation, in which a rotational flow is generated and which is designed as an annular space with an overflow edge on the inside, one below the overflow edge funnel-shaped collecting basin and above the overflow edge discharge openings of metering devices for solid and liquid components are arranged, furthermore at least one feed line for a pressurized liquid flow opens into the annular space and the suction line of a pump is connected to the outlet of the funnel-shaped collecting basin.
  • Granular chlorinated lime is primarily provided as a solid and water, solvents and / or emulsifiers are primarily provided as liquid components, the device as such being intended to generate the required stream of a water-chemical mixture for the purpose of decontaminating terrain strips or equipment .
  • solvents and / or emulsifiers are primarily provided as liquid components, the device as such being intended to generate the required stream of a water-chemical mixture for the purpose of decontaminating terrain strips or equipment .
  • One difficulty is to evenly mix the granular or lumpy solid, especially chlorine lime, with the water stream, which requires a certain dwell time to dissolve the solid in the water.
  • a mixing device is known from DE-A-34 41 529, in which water is introduced from below into a rotationally symmetrical container with a vertical axis and is set in a rotating flow by a disk rotating about a coaxial axis.
  • a liquid stream in which solids are dissolved is fed coaxially from above through a second pipeline, and it is expected that this stream coaxially flowing in from above mixes with the stream flowing in from below, with additional provision being made that from the side connected pipes other liquid components can be supplied.
  • the top of the rotationally symmetrical container is limited by an overflow edge. The excess flow passes over this overflow edge into a collecting container surrounding the outside of the rotating container and is discharged into its lower region.
  • the contact area of the flow that is to rotate with the wall of the rotating container is much larger than the contact area with the wall of the rotating disk, and which flows form within the rotating container and can be used for the purpose of mixing is very confusing.
  • GB-A-2 031 748 describes a mixing device in which liquid flows tangentially into a cylindrical mixing device and solid is mixed in from above.
  • Containers which are designed as feed dispensers are connected to the mixing device.
  • the mixing device is used to produce animal feed.
  • the components used, such as milk, milk powder, water, vitamin powder, etc., are readily miscible in their structure.
  • the invention is therefore based on the object of providing a simple but reliable device by means of which a granular, water-soluble solid can be continuously and properly mixed into a liquid stream with a predictable mixing result, even if a very strong or significantly weaker stream is desired at times .
  • This object is achieved in that there is a directional valve in the delivery line of the pump, which connects the pump with the suction line of a discharge pump in a first switching position, and in a second switching position connects the delivery line of the pump with a mixing container, which consists of a plurality of chambers, which are connected to one another in series, each chamber having a pump, the suction line of which is arranged inside the chamber close to the chamber bottom and the delivery line of which is divided into two branch lines, one of which branch line into the subsequent chamber above the maximum Levels opens and the second branch line into the suction chamber close to Chamber floor is returned, and wherein one of the branch lines of the delivery line of the pump of the last chamber of the series-connected chambers of the mixing container is connected to the suction line of the discharge pump.
  • the rotational flow in the annular container is achieved in a simple manner, it being possible for the water supply lines to open out from below or from the lateral peripheral wall without protruding into the annular space, so that the flow enters tangentially without pipe parts protruding into the container. It is also conceivable to supply liquid components already in the annular space.
  • the entire annular space is preferably covered by a cover which covers the overflow edge and from which a cylindrical part protrudes inwards and downwards, so that a gap is formed between this part which projects inwards and downwards and the wall, the upper edge of which forms the overflow edge, whereby laterally sprayed solid particles cannot get into the water flow due to the overhanging cover wall.
  • a cover which covers the overflow edge and from which a cylindrical part protrudes inwards and downwards, so that a gap is formed between this part which projects inwards and downwards and the wall, the upper edge of which forms the overflow edge, whereby laterally sprayed solid particles cannot get into the water flow due to the overhanging cover wall.
  • the discharge line can also be connected above the lowest point of the funnel, preferably tangentially.
  • the connection can be made in the direction of flow or counter to the direction of flow, in the latter case a strong turbulence and thus mixing is achieved before entering the discharge pipe.
  • a switchable directional valve which connects the pump to a mixing container in one switching position and the pump delivery line in another switching position connects the suction line of the discharge pump, it is possible, if the mixing was insufficient due to the supply of very many components in large quantities, optionally to achieve additional mixing with the help of the mixing container. In the other case, that is, with sufficient mixing of the components, the liquid mixture can go directly to the discharge pump and be applied from there to the object of decontamination.
  • the pumps of the individual chambers are designed in such a way that their delivery volume considerably exceeds the continuously required amount of liquid mixture, so that the flow can be divided and the much larger one
  • the amount of liquid mixture in the chamber belonging to the pump is pumped around, while only the continuously required amount of liquid mixture is passed on to the next chamber and finally reaches the discharge pump after passing the last pump.
  • the individual drives can be individually controlled and switched on or off.
  • a flow meter in the delivery line of the pump for water supply to the annular space between the latter and the annular space and to control the drive motors of the metering devices and the pump at the outlet of the funnel depending on the measurement signal thereof.
  • the water flow is expediently fed to the ring container by a pump which generates a pressure. It is particularly advantageous if the pump delivery line is split into two branch lines, both of which are connected to the annular space via supply lines. A shut-off valve and a flow control valve are arranged in series in each branch line, the two flow control valves being designed for currents of different sizes. It is also possible to regulate the delivery flow of the pump via its speed or via a single flow control valve in the delivery line. In any case, it is possible in one of these ways to determine which water flow, i.e.
  • the pump 1 draws in from the water tank 2 and delivers into the delivery line 3.
  • the pump 1 is driven by the electric motor 4.
  • the delivery line 3 branches into the two branch lines 5 and 6, a shut-off valve 7 and a flow control valve 8 being arranged in series in the branch line 5.
  • a shut-off valve 9 and a flow control valve 10 are located in the branch line 6 in exactly the same way connected in series.
  • a line 11 leads and starting from the flow control valve 10
  • a line 12 leads into the toroidal annular space 13, which has an inner overflow edge 14.
  • the annular space 13 is covered by a cover 15, the projection 16 of which covers the overflow edge 14.
  • the inner wall 17 of the annular space 13 is cylindrical.
  • a funnel 18 Connects to them downwards a funnel 18, at the lowest point of which a line 19 is connected, which leads to a second pump 20 which is driven by an electric motor 21 and which conveys into a delivery line 22.
  • a directional valve 23 is arranged, from which a line 24 and a second line 25 originate, the second line 25 being connected to the suction line 26 of a discharge pump 27.
  • the line 24 leads into a first chamber 29 of a mixing container 28, which in this example consists of three chambers 29, 30, 31 connected in series.
  • Pumps 35, 36, 37 driven by electric motors 32, 33, 34 are assigned to the chambers.
  • the chambers are separated from one another by partition walls 39, 40 of different heights.
  • the height of the intermediate walls 39, 40 increases starting with the first chamber 29 with each next chamber following in the series connection, so that the intermediate wall between the penultimate and the last chamber is the highest.
  • Suction lines 41, 42, 43 belonging to the pumps 35, 36, 37 are each arranged in such a way that the liquid mixture is sucked into the chamber bottom.
  • the delivery line of each pump is divided into two.
  • a line section with a larger cross section leads back into the chamber to the chamber floor, where the respective suction opening of the suction line is also located.
  • a second line section with a smaller cross-section opens into the next chamber connected in series, above the maximum possible liquid level there. Only the continuously required amount of liquid mixture is passed from chamber to chamber. Due to the division of the current, the majority remains in constant circulation, since the different heights of the intermediate walls of the chamber always cause an overflow back to the first chamber 29. This ensures intensive mixing with sufficient residence and dissolving times.
  • Switches 44, 45, 46 located in the chambers control the minimum level of the liquid mixture of each chamber located above the suction openings of the suction lines 41, 42, 43. If the minimum level is reached in a chamber, the pump belonging to the upstream chamber is switched on. Another switch 47 controls the maximum liquid level in the mixing container 28. This switch 47 is therefore located in the first chamber 29. It switches off the pump 20 when the maximum level is reached.
  • switches 48, 49 for checking the liquid level which switch the electric motors 4, 50, 51 of the water pump 1, a solids metering device 52 and a metering device 53 of the liquid component on or off when certain levels are undershot or exceeded.
  • a plurality of metering devices can also be provided for the solid and liquid components.
  • the second line part with a smaller cross section of the delivery line of the pump 37 of the last chamber 31 is connected through line 54 to the suction line 26 of the discharge pump 27.
  • the line 54 can also be shut off by means of a switchable directional valve 55.
  • the discharge pump 27, preferably an internal combustion engine powered portable pump, is connected by a delivery line 56, in which a switchable directional valve 57 is arranged, at a certain switching position of the directional valve 57, to the discharge devices, for example spray devices, which are no longer shown in the drawing.
  • the delivery line 56 and suction line 26 are short-circuited via a return line 58, the electric motors 4, 21, 32, 33, 34, 50, 51 of the pumps 1, 20, 35, 36, 37 and Dosing devices 52, 53 are switched off.
  • a further line 59 is connected, which is provided with a switchable directional valve 60, in the switch position of which the line 59 is blocked.
  • the line 59 is directly connected to the suction line 26 of the discharge pump 27.
  • the solids metering device 52 essentially consists of a feed hopper 61 which is filled with the solids to be mixed, the solids being kept in motion by means of a rotary vane 62, and a metering device 63 at the lower region of the loading hopper 61, the discharge screw 64 of which is controlled by the controllable electric motor 50 is driven.
  • the metering device 53 of the liquid component consists of a conveying device 65 which is driven by means of the controllable electric motor 51 and which flows from a container 66 via a shut-off valve 67 to the liquid component to be mixed.
  • Two containers 66 are expediently arranged vertically one behind the other, a shut-off valve 67 being provided on each of the containers 66 and one container 66 being used to hold solvents and the other being used to hold emulsifiers, or a mixture of solvent and emulsifier being premixed in both .
  • Attached to the directional control valve 57 is an electrical switching element (not shown in the drawing) which is connected to the actuating lever of the directional control valve 57 and is coupled to a voltage source. Electrical lines are laid between the switching element and the electric motors of the mixing device.
  • the operation of the mixing device is as follows:
  • the pump 1 draws water from the water tank 2 and conveys it through the delivery line 3 into the branch lines 5 and 6.
  • the two flow control valves 8 and 10 are set to differently sized flows, the flow control valve 8 preferably being on a small current is set as required for device decontamination and the flow control valve 10 is set for a large current as required for site decontamination. If the shut-off valve 9 is closed and the shut-off valve 7 is open, only a small current flows into the annular space 13 of the mixing device, while when the shut-off valve 7 is closed and the shut-off valve 9 is open, a much larger current flows as required for the decontamination of the site is. For the site decontamination, preferably both shut-off valves 7 and 9 can be opened.
  • the flow control valve 8 is designed for a flow of 20 l / min and the flow control valve 10 for a flow of 180 l / min.
  • a certain allocated amount of solvent and / or emulsifier enters the rotating water stream and mixes with it and the chlorine lime.
  • Devices known per se such as screens, centrifugal separators or the like, can ensure that no lime lump particles are torn through the suction line 19 to the second pump 20.
  • the water-chemical mixture is supplied to the mixing tank 28 with the corresponding position of the directional valve 23 in the delivery line 22, where it is circulated in the manner already described. From there, the liquid mixture passes through the delivery line 54 provided with a shut-off directional valve 55 and the suction line 26 to the discharge pump 27, which is connected to the spray devices for decontamination.
  • the directional control valve 57 in the delivery line 56 of the discharge pump 27 is switched into the circulating position, so that the discharge pump 27 pumps the remaining quantity in circulation.
  • the electrical switching element connected to the actuating lever of the directional control valve 57 ensures that all electric motors are switched off. The switch-on or switch-on takes place completely through the directional control valve 57 or the electrical switching element connected to it.
  • the electric motors can be switched on and off individually by additional, arbitrarily actuated switches, which are no longer shown in the drawing.
  • the electric motors 4 and 21 of the pumps 1 and 20 and the motor 50 of the solids metering device 52 run and the directional control valve 23 is in a switching state, not shown in the drawing, in which the lines 22 and 25 are connected to one another.
  • the directional valve 55 is in the blocking position.
  • the directional control valve 60 is in the open position, so that the funnel 18 and discharge pump 27 are additionally connected via the line 59. In this way, the maximum flow rate of liquid mixture can be applied.
  • the electric motors 4, 21, 51 of the pumps 1, 20 and the metering device 53 for the liquid component run.
  • the directional valve 23 connects the delivery line 22 of the pump 20 directly to the suction line 26 of the discharge pump 27.
  • the directional control valve 23 is switched so that the liquid flowing through the line 22 is passed via the mixing container 28 to the discharge pump 27.
  • the electric motors 32, 33, 34 of the pumps 35, 36, 37 of the mixing container chambers 29, 30, 31 are also switched on.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Accessories For Mixers (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Claims (10)

  1. Dispositif pour l'obtention en continu d'un mélange liquide à partir de matières solides et liquides, utilisant une chambre de révolution (15) à axe sensiblement vertical, dans laquelle est produit un courant giratoire et dont la paroi intérieure a son bord deverseur (14) situé au-dessus d'une cuvette collectrice (18) en forme d'entonnoir, tandis que des orifices de sortie reliés à des dispositifs de dosage (52, 53) de composants solides et liquides, débouchent plus haut que le bord déverseur et qu'au moins une canalisation (11, 12) amenant un courant de liquide sous pression débouche tangentiellement dans la chambre annulaire, la sortie de la cuvette collectrice (18) en forme d'entonnoir étant reliée à la conduite d'aspiration d'une pompe (27), caractérisé en ce que la canalisation de refoulement (22) de la pompe (20) est équipée d'un distributeur (23), qui, dans une première position, met en liaison la pompe (20) et la canalisation d'aspiration (26) de la pompe de sortie (27) et, dans une seconde position, met en liaison la canalisation de refoulement (22) de la pompe (20) avec un récipient mélangeur (28), constitué de plusieurs chambres (29, 30, 31) reliées en série, chaque chambre (29, 30, 31) étant équipée d'une pompe (35, 36, 37) dont la canalisation d'aspiration (41, 42, 43) débouche dans la chambre près du fond, et dont la canalisation de refoulement est divisée en deux branches dont l'une débouche dans la chambre suivante au-dessus du niveau maximal tandis que l'autre branche fait retour dans la chambre d'aspiration près de son fond, une des branches (54) de la canalisation de refoulement de la pompe (37) de la dernière (31) des chambres reliées en série (29, 30, 31) du récipient mélangeur (28) étant reliée à la canalisation d'aspiration (26) de la pompe de sortie.
  2. Dispositif selon la revendication 1, caractérisé en ce que, dans la deuxième branche (54) de la canalisation de refoulement de la pompe (37) de la dernière (31) des chambres reliées en série (29, 30, 31) du récipient mélangeur (28) est monté un distributeur (55) qui, dans une position donnée, interrompt la liaison à la canalisation d'aspiration (26) de la pompe de sortie (27).
  3. Dispositif selon une des revendications précédentes, caractérisé en ce que la sortie de la cuvette collectrice (18) en forme d'entonnoir est reliée par une canalisation (59) à la canalisation d'aspiration (26) de la pompe de sortie (27), tandis qu'un distributeur (60) monté dans cette canalisation de liaison (59) interrompt, lorsque est dans une certaine position, la liaison à la canalisation d'aspiration (26) de la pompe de sortie (27).
  4. Dispositif selon une des revendications précédentes, caractérisé en ce que la canalisation de refoulement (56) de la pompe de sortie (27) est équipée d'un distributeur qui, dans une position donnée, relie en court-circuit les canalisations de refoulement (56) et d'aspiration (26) de la pompe de sortie (27).
  5. Dispositif selon une des revendications précédentes, caractérisé en ce que l'entraînement de chacune des pompes (1, 20, 35, 36, 37) à l'exception de la pompe de sortie (27), ainsi que l'entraînement des appareils doseurs (52, 53) des composants solides et liquides est assuré par un moteur individuel (4, 21, 32, 33, 34, 50, 51).
  6. Dispositif selon les revendications 4 et 5, caractérisé en ce que l'organe de manoeuvre du distributeur (57) monté sur la canalisation de refoulement (56) de la pompe de sortie (27) est relié à un connecteur électrique qui, dans une de ses positions de connexion, coupe l'alimentation des moteurs électriques (4, 21, 32, 33, 34) des pompes (1, 20, 35, 36, 37) à l'exception de la pompe (27), ainsi que des moteurs électriques (50, 51) des appareils doseurs (52, 53) des composants solides et liquides.
  7. Dispositif selon la revendication 5, caractérisé en ce que dans la canalisation d'alimentation (11, 12) de la chambre annulaire (13) est monté un organe de mesure de débit, dont le signal de sortie pilote les vitesses des moteurs (50, 51, 21) des appareils doseurs (52, 53) des composants solides et liquides et de la pompe (20) intercalée entre la cuvette collectrice (18) en forme d'entonnoir et le récipient mélangeur (28) divisé en chambres.
  8. Dispositif selon la revendication 5, caractérisé en ce que dans les chambres (29, 30, 31) du récipient mélangeur (28) sont montés, en bas, des contacteurs (44, 45, 46) qui mettent sous tension les moteurs électriques (32, 33, 34) des pompes (35, 36, 37) lorsqu'un niveau minimal du liquide contenu est atteint dans la chambre correspondante, tandis qu'un contacteur (47) commun à toutes les chambres (29, 30, 31) et placé en haut dans la première chambre (29) coupe l'alimentation du moteur électrique (21) de la pompe (20) intercalée entre la cuvette collectrice (18) en forme d'entonnoir et le récipient mélangeur (28) divisé en chambres.
  9. Dispositif selon la revendication 5, caractérisé en ce que des contacteurs (48, 49) présentant entre eux un certain espacement vertical, sont disposés dans la cuvette collectrice (18) en forme d'entonnoir et mettent en route ou arrêtent les moteurs électriques (4, 50, 51) des alimentations, en fonction du niveau liquide dans la cuvette.
  10. Dispositif selon une des revendications précédentes, caractérisé en ce qu'une canalisation de refoulement (3) d'une pompe (1), amenant le liquide sous pression à la canalisation d'alimentation (11, 12), est divisée en deux branches (5, 6) au moins dans lesquelles le liquide circulant est soumis à l'action des vannes d'arrêt (7, 9) et de régulateurs de débit (8, 10).
EP88114330A 1987-09-03 1988-09-02 Dispositif pour la production en continu d'un mélange fluide de solides et liquides Expired - Lifetime EP0306030B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88114330T ATE85237T1 (de) 1987-09-03 1988-09-02 Einrichtung zum kontinuierlichen erzeugen einer fluessigen mischung von fest- und fluessigstoffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873729527 DE3729527A1 (de) 1986-11-14 1987-09-03 Einrichtung zum kontinuierlichen erzeugen einer fluessigen mischung von fest- und fluessigstoffen
DE3729527 1987-09-03

Publications (2)

Publication Number Publication Date
EP0306030A1 EP0306030A1 (fr) 1989-03-08
EP0306030B1 true EP0306030B1 (fr) 1993-02-03

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Application Number Title Priority Date Filing Date
EP88114330A Expired - Lifetime EP0306030B1 (fr) 1987-09-03 1988-09-02 Dispositif pour la production en continu d'un mélange fluide de solides et liquides

Country Status (10)

Country Link
US (1) US4859072A (fr)
EP (1) EP0306030B1 (fr)
JP (1) JPS6470136A (fr)
AT (1) ATE85237T1 (fr)
CZ (1) CZ277748B6 (fr)
DD (1) DD273010A5 (fr)
DE (1) DE3878096D1 (fr)
IL (1) IL87641A (fr)
SU (1) SU1720477A3 (fr)
UA (1) UA7200A1 (fr)

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JP6548424B2 (ja) * 2015-03-30 2019-07-24 兵神装備株式会社 粉体混合機及び粉体混合方法
JP6835364B2 (ja) * 2019-06-25 2021-02-24 兵神装備株式会社 粉体混合機及び粉体混合方法
WO2024059196A1 (fr) * 2022-09-16 2024-03-21 H.J. Heinz Company Brands Llc Systèmes et procédés pour transformation d'aliments

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UA7200A1 (uk) 1995-06-30
CS555688A3 (en) 1992-11-18
IL87641A0 (en) 1989-02-28
DE3878096D1 (de) 1993-03-18
JPS6470136A (en) 1989-03-15
EP0306030A1 (fr) 1989-03-08
DD273010A5 (de) 1989-11-01
US4859072A (en) 1989-08-22
CZ277748B6 (en) 1993-04-14
SU1720477A3 (ru) 1992-03-15
IL87641A (en) 1992-09-06
ATE85237T1 (de) 1993-02-15

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