EP0490790A1 - Anlage zum Formen von Mischungen auf Flüssigkeitsbasis mit Schabedosiereinheit und Verfahren zum Formen - Google Patents

Anlage zum Formen von Mischungen auf Flüssigkeitsbasis mit Schabedosiereinheit und Verfahren zum Formen Download PDF

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Publication number
EP0490790A1
EP0490790A1 EP91420436A EP91420436A EP0490790A1 EP 0490790 A1 EP0490790 A1 EP 0490790A1 EP 91420436 A EP91420436 A EP 91420436A EP 91420436 A EP91420436 A EP 91420436A EP 0490790 A1 EP0490790 A1 EP 0490790A1
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EP
European Patent Office
Prior art keywords
component
metering unit
transfer
scraper body
installation according
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Withdrawn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
EP91420436A
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English (en)
French (fr)
Inventor
Alain Gabriel Maurice Petit
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.)
CELLIER SA
Original Assignee
CELLIER SA
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 CELLIER SA filed Critical CELLIER SA
Publication of EP0490790A1 publication Critical patent/EP0490790A1/de
Withdrawn legal-status Critical Current

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    • 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
    • B01F35/71—Feed mechanisms
    • B01F35/714—Feed mechanisms for feeding predetermined amounts

Definitions

  • the present invention relates to the general technical field of the formulation of mixtures, with liquid characteristics, from various components which must be mixed in defined proportions and therefore precisely dosed, in order to produce a final mixture for various uses.
  • the invention relates, more particularly but not exclusively, to the formulation of mixtures including at least one and, preferably, several liquid components having a high viscosity.
  • the invention therefore relates, essentially, to an installation and a method for formulating mixtures based on components of a liquid nature comprising one or more storage means, of the tank or enclosure type, in which components entering the final formulation are kept. , one or more mixing reactors, a metering unit interposed between the storage means and the mixing reactor and connected to the latter by means of transfer lines, and a set of pumps and control valves mounted on the lines transfer.
  • the formulation of liquid mixtures is carried out in a tank into which the different components of the mixture are sent, successively, the dosage being carried out directly by controlling the weight of the tank and its successive evolution during the introduction of the various components of the mixed.
  • the tank can either be a buffer tank from which the component (s) introduced are then directed to another final container, or directly the mixer in which the final composition is obtained.
  • volumetric dosers for example of the screw type, used to transfer, from a storage container, a known and measured quantity of the component.
  • the object of the invention therefore aims to solve the problems and drawbacks mentioned above and to propose an installation and a method for formulating mixtures making it possible to ensure complete cleaning of the internal surface of the metering unit, while ensuring transfer of the metered component.
  • Another object of the invention consists in proposing an installation and a method for formulating mixtures capable of ensuring, using simple and reliable means, a controlled transfer of the metered component to the mixing reactor.
  • An additional object of the invention is to provide an installation and a method capable of ensuring a gradual transfer of the metered component to the mixing reactor.
  • the objectives assigned to the invention are also achieved by a process for formulating a mixture from components of a liquid nature, stored in means of storage from which they are withdrawn to be dosed in a dosing unit, then transferred in known quantity to a mixing reactor, characterized in that it consists in carrying out, simultaneously, using a scraper body powered by d end to end of the metering unit, scraping of the internal surface of the metering unit and transfer of the metered component to the mixing reactor.
  • Fig. 1 shows a block diagram of a formulation installation according to the invention.
  • Figs. 2 and 3 show, in cross sections, a detail of embodiment of the invention consisting of a control valve.
  • the installation shown schematically in fig. 1, comprises means for storing the liquid character components to enter into the final formulation, these storage means including at least one tank 1 and, in general, many, such as 1 'and 1 ⁇ for example.
  • the tanks 1, 1 ′, 1 ⁇ are provided, for example, with a system for locating the liquid level 2 and include a transfer pump 3, 3 ′, mounted on an outlet pipe 4, 4 ′, Downstream of a control valve 5, 5 ′ , 5 ⁇ allowing the closing or opening of the tank 1 to the outside.
  • the outlet pipe 4, 4 ′ is connected to a return pipe 6, 6 ′ thus forming a circulation loop for the product contained in the tank 1 .
  • a tap 7 from the loop, associated with a valve 8, 8 ′, 8 ⁇ and a flexible hose 9, 9 ′, 9 ⁇ , ensure the transfer of the liquid component from the tank 1, 1 ′, 1 ⁇ to a dosing unit 11 of the component.
  • the metering unit 11 is connected to the inlet hoses 9, 9 ′, 9 ⁇ by means of inlet valves 12, 12 ′, 12 ⁇ , the characteristics of which will be described in more detail below.
  • the metering unit 11 is advantageously constituted by a tubular element 13, of constant section, preferably circular and defining, between its two ends 14 and 15, a volume and a determined capacity, of the order, for example, 100 liters.
  • the tubular element 13 consists of a tube having a substantially horizontal central branch 15 supplemented, at its two ends, by two substantially vertical end branches 16 and 17 and connected to the central portion 15 by an elbow, so as to form a tube in ⁇ U ⁇ .
  • the end parts of the branches 16 and 17 define the ends 14 and 15 of the metering unit 11 and consist of two stations, respectively 18 and 19 forming, alternately, arrival or departure station for a scraper body 21 freely movable inside the closed circuit consisting of stations 18, 19 and the tubular element 13 .
  • the scraper body 21 may consist of any known element suitable for a pipe scraping operation, of the plug or scraper diabolo type.
  • the scraper body 21 has a solid section which is substantially equivalent, to the nearest tightening, to the internal section of the tubular element 13, so as to ensure effective scraping of the internal walls of the entire tube.
  • Such scraper bodies are well known to those skilled in the art and will therefore not be described in more detail below.
  • a device for detecting the presence of the scraper body 21 in the stations 18, 19 of the position sensor type, is provided in each station and can be functionally connected to a central control unit of the installation.
  • the central branch 15 of the metering tube 13 is mounted on two load cells 25 and 26 making it possible to weigh the component introduced into the tube 13 and thus to constitute a weight metering element. He's good Obviously, instead of the weight type metering unit, a volumetric metering unit can be used.
  • the tubular element 13, inside which the scraper body 21 is intended to carry out a back and forth movement between the stations 18 and 19, is connected, by the ends of the stations 18 and 19 to a propulsion system 30 intended to supply the kinetic energy necessary for the scraper body 21.
  • a propulsion system 30 intended to supply the kinetic energy necessary for the scraper body 21.
  • Each station 18, 19 is connected, via a control valve 31, 32 and hoses 33 and 34, on the one hand, to a propulsion system pneumatic 35 and, on the other hand, to a hydraulic propulsion system 36.
  • the pneumatic propulsion system 35 comprises a source of propellant fluid 10, of the compressed air or nitrogen type for example, transfer lines, two inlet or shut-off valves 38 a and 38, respectively associated with the station 18 and the station 19 and connected to hoses 33 and 34.
  • a source of propellant fluid 10 of the compressed air or nitrogen type for example, transfer lines, two inlet or shut-off valves 38 a and 38, respectively associated with the station 18 and the station 19 and connected to hoses 33 and 34.
  • the hydraulic propulsion system 36 comprises an auxiliary tank 37 comprising a propellant liquid, preferably a solvent or water, capable of being conveyed via an outlet valve 65, a pump 39 with variable flow and from a pipe 40 to a transfer line 41 connected, at one end, to the station 18 and to the hose 33, by a valve 42 and, by the other end, to the station 19 and to the hose 34 by a valve 43.
  • a propellant liquid preferably a solvent or water
  • the hydraulic propulsion system 36 is completed by a return circuit to the tank 37 including, for example, two valves 44 and 45 associated, respectively, with the hose 33 and the hose 34 and connected to a return line 46 to the auxiliary tank. 37.
  • the pneumatic propulsion circuit also includes an evacuation or drain pipe 47 connected, by a valve 48, to the hose 33 and a valve 49 to the hose 34, on the one hand, and by a valve 50 and a hose 51 to the tubular element 13, on the other hand.
  • Stations 18 and 19 are connected via lines 55 and 56, two valves 57, 58 and two hoses 59, 60, respectively to mixing reactors 61 and 62.
  • these reactors can be provided with internal mixing means, of the paddle type and include , also, an autonomous weighing system 63.
  • the intake valves 12, 12 ′ and 12 ⁇ mounted on the tubular element 13 and such as those shown in FIGS. 2 and 3, comprise a cylindrical body 70 integral, by a lower end 71, with the tubular element 13 and connected to the latter by an opening 72.
  • the cylindrical body 70 is closed at the end 73 opposite the lower end 71 and comprises, substantially in its central part 74, a transverse wall 75 dividing the interior of the cylindrical body 70 into two chambers, one called lower 76, the other called upper 77.
  • the transverse wall is pierced, substantially in its center, with an orifice centered on the central axis xx ′ of the cylindrical body 70.
  • a rod 78 is slidably mounted, by a seal, inside the cylindrical body 70 , so as to move between the two chambers 76 and 77 through the transverse wall 75.
  • the lower and upper ends of the rod 78 are provided, respectively, with pistons 79, 80 provided with segments 81.
  • the valve 12 comprises a means 82 for returning the piston 79 to the closed position against the tubular element 13.
  • the elastic return means 82 consists of a compression spring, coaxial with the rod 78 and bearing, by one end, on the upper face of the piston 79 and, by the other end, against the underside of the transverse wall 75.
  • the lower end 83 of the piston 79 is shaped so as to fit into the opening 72 of the tubular element 13 and so that the circular bearing 83 a of the piston comes exactly to fit the seat 84 surrounding the opening 72 . It is particularly important that, in the closed position of the piston 79, the conformation of its lower end 83 does does not modify the cross section of the tubular element 13 and, in all cases, does not enter the limits defined by the latter, in order to ensure continuity of shape of said section and not to hinder the free passage of the body scraper 21.
  • the valve 12 is advantageously pneumatically controlled and comprises, for this purpose, in the upper chamber 77, a lower bore 85 and an upper bore 86 in relation to a pneumatic source.
  • the cylindrical body 70 comprises, in the lower part of the lower chamber 76, an inlet orifice 87 to which an elbow 88 is connected in relation, by means of a bellows 89, to the hose 9.
  • the variant embodiment of the valve 12, shown in FIG. 3, does not differ from that shown in fig. 2, only by the relative positions of extension of the tubular element 13 and of the cylindrical body 70.
  • the cylindrical body 70 extends substantially horizontally along an extension plane P perpendicular to the longitudinal extension plane of the tubular element 13, whereas, in the example shown in FIG. 2, the extension plane P coincides with the longitudinal extension plane of the tubular element 13.
  • the piston 79 comprises, at its periphery opposite the orifice 72, a re-entrant conformation in the form of a spherical cap 91 conforming to the shape of the upper part of the tubular element 13 when the piston 79 is in the closed position of the orifice 72, as shown dotted in fig. 3.
  • the filling of the metering unit 11, that is to say the filling of the tubular element 13, is carried out, for example, with the scraper body 21 in a fixed position in the terminal station 19, the installation being initially stopped and all the valves being closed.
  • the filling is carried out by opening the valve 5 of the tank 1, starting the pump 3 and opening the valve 7.
  • the intake valve 12 is in the open position, that is to say that the orifice 72 of the tube 13 is open and that the piston 79 compresses the spring 82, so that the component, contained in the tank 1, can flow through the hose 9 and the elbow 88 in the metering unit .
  • This open position of the valve 12 is obtained by introducing compressed air into the chamber 77, through the orifice 85, in order to make the rod 78 slide along the arrow f1 by increasing the pressure on the face. lower of the piston 80.
  • the component flows into the tubular element 13 and is weighed, via the load cells 25 and 26, until the desired value is obtained, from which the valve 7 is closed , simultaneously with the valve 12, which returns to the closed position by moving along the arrow f2, the compressed air being expelled through the orifice 85.
  • valves 8 ′ or 8 ⁇ and 12 ′ or 12 ⁇ valves it is also possible to introduce a second component according to the same cycle, from the tank 1 ′ , for example insofar as the two components are compatible, by means of the valves 8 ′ or 8 ⁇ and 12 ′ or 12 ⁇ valves.
  • the known quantity of the component dosed or weighed inside the tubular element 13 can then be transferred, for example, to the mixing reactor 61 using the scraper body 21, propelled from the departure station 19 to the arrival station 18.
  • a rapid transfer at a substantially constant speed can be effected by opening the valves 57, 38 and 32, so as to allow the introduction of compressed air or gas, from source 10, via line 35.
  • the compressed air then propels the scraper body 21, which simultaneously, during its transit from one end to the other of the metering unit, scrapes the internal surface of the tubular element 13 and transfers by dynamic thrust of the component dosed to and in the mixing reactor 61.
  • the scraper body 21 Upon arrival at the station 18 , the scraper body 21 is detected by an appropriate detection system, which can be functionally connected to an automatic control cabinet controlling the closing of the previously opened valves. It is also possible, to ensure complete emptying of all the pipes, to open the valve 31 with the valve 38 a , in order to ensure, by admitting air or compressed gas, the emptying complete of the lines 55 and 59 connecting the mixing reactor 61 to the station 18. The valves 57 and 38 are then closed.
  • the return of the scraper body 21 to the station 19 can be carried out quickly by opening the valves 38 a and 31 if they are not already open, on the one hand, and 32 and 49, on the other hand, for example.
  • the valve 50 is then opened to return the circuit to atmospheric pressure.
  • the flow rate of the pump 39 is adjusted, as a function of the desired transfer flow rate in the mixing reactor 61.
  • the liquid, preferably a solvent, stored in the auxiliary tank 37, then ensures the propulsion of the scraper body 21, from the station 19 to the arrival station 18, at the desired pace.
  • the scraper body is then detected when it arrives at the station 18, and the pump 39 stopped and the valve 43 closed.
  • the installation can then be stopped in this state. It is, however, preferable, after transfer into the reactor 61 of the metered component, to ensure a rinsing of the tubular element 13 after an appropriate dilution time of the solvent, in order to avoid any drying of traces or residues of susceptible components. to adhere to the internal surface of the tubular element 13.
  • the tubular element can then be emptied by using the return path of the scraper body 21 located in the station 18.
  • the valves 38 a and 31 are open, as are the valves 32 and 45, so allow the scraper body 21 to ensure, when it returns to the station 19, the flow of the draining liquid towards the auxiliary tank 37, by means of the valve 45 of the pipe 46.
  • the installation and the formulation process thus described therefore make it possible to ensure, using simple and reliable means, a complete scraping of the metering unit, while ensuring a complete transfer of the quantity of components dosed. It thus appears possible to transfer, without loss, the quantity exactly measured and dosed to the mixing reactor and thus to obtain a final composition of precise formulation.
  • the possibility of scraping the metering unit 11 also makes it possible to minimize the losses of components and the possibility of controlling the speed of transfer of the component by controlling the speed of the scraper body 21 allows components to be brought into contact gradually. showing incompatibility in the event of rough mixing.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
EP91420436A 1990-12-11 1991-12-06 Anlage zum Formen von Mischungen auf Flüssigkeitsbasis mit Schabedosiereinheit und Verfahren zum Formen Withdrawn EP0490790A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9015742A FR2670131B1 (fr) 1990-12-11 1990-12-11 Installation de formulation de melanges a base de liquides a unite de dosage raclee et procede de formulation afferent.
FR9015742 1990-12-11

Publications (1)

Publication Number Publication Date
EP0490790A1 true EP0490790A1 (de) 1992-06-17

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EP91420436A Withdrawn EP0490790A1 (de) 1990-12-11 1991-12-06 Anlage zum Formen von Mischungen auf Flüssigkeitsbasis mit Schabedosiereinheit und Verfahren zum Formen

Country Status (3)

Country Link
EP (1) EP0490790A1 (de)
JP (1) JPH04267940A (de)
FR (1) FR2670131B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2708595A1 (fr) * 1993-07-29 1995-02-10 Explosifs Prod Chim Dispositif de transfert de composants pour explosifs.
WO2007144675A1 (en) * 2006-06-14 2007-12-21 Gea Egi Energiagazdálkodási Zrt. Hydromechanical mixing apparatus
EP3097972A1 (de) * 2015-05-26 2016-11-30 Phode Sciences Herstellungseinheit von titrierten mischungen und verfahren ihrer verwendung
CN112892392A (zh) * 2021-03-02 2021-06-04 广西镀宝环保科技有限公司 一种水性涂料制备生产线

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058889A (en) * 1932-04-04 1936-10-27 Sharples Specialty Co Feeding and treating system for fluids
US3402852A (en) * 1967-03-03 1968-09-24 Central Pre Mix Concrete Co Liquid measuring and dispensing device
FR2280886A1 (fr) * 1974-07-30 1976-02-27 Faiveley Sa Doseur volumetrique de proportion pour fluides et application d'un tel doseur
EP0391152A1 (de) * 1989-04-03 1990-10-10 Kabushiki Kaisha Polyurethane Engineering Apparat zum Mischen eines zusammengesetzten synthetischen Harzes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058889A (en) * 1932-04-04 1936-10-27 Sharples Specialty Co Feeding and treating system for fluids
US3402852A (en) * 1967-03-03 1968-09-24 Central Pre Mix Concrete Co Liquid measuring and dispensing device
FR2280886A1 (fr) * 1974-07-30 1976-02-27 Faiveley Sa Doseur volumetrique de proportion pour fluides et application d'un tel doseur
EP0391152A1 (de) * 1989-04-03 1990-10-10 Kabushiki Kaisha Polyurethane Engineering Apparat zum Mischen eines zusammengesetzten synthetischen Harzes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSE BULLETIN vol. 23, no. 6, Novembre 1980, NEW YORK page 2547; HOVERSTOCK: 'ADDITIVE CONTROL APPARATUS AND METHOD' *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2708595A1 (fr) * 1993-07-29 1995-02-10 Explosifs Prod Chim Dispositif de transfert de composants pour explosifs.
WO2007144675A1 (en) * 2006-06-14 2007-12-21 Gea Egi Energiagazdálkodási Zrt. Hydromechanical mixing apparatus
CN101466458B (zh) * 2006-06-14 2011-08-31 Gea.Egi能源技术有限公司 液力机械搅拌装置
EP3097972A1 (de) * 2015-05-26 2016-11-30 Phode Sciences Herstellungseinheit von titrierten mischungen und verfahren ihrer verwendung
FR3036631A1 (fr) * 2015-05-26 2016-12-02 Phode Sciences Unite de fabrication de melanges titres
CN112892392A (zh) * 2021-03-02 2021-06-04 广西镀宝环保科技有限公司 一种水性涂料制备生产线

Also Published As

Publication number Publication date
JPH04267940A (ja) 1992-09-24
FR2670131A1 (fr) 1992-06-12
FR2670131B1 (fr) 1993-08-13

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