GB2091115A - Apparatus for premixing of the components used in the manufacture of polyurethane foam - Google Patents

Apparatus for premixing of the components used in the manufacture of polyurethane foam Download PDF

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Publication number
GB2091115A
GB2091115A GB8137342A GB8137342A GB2091115A GB 2091115 A GB2091115 A GB 2091115A GB 8137342 A GB8137342 A GB 8137342A GB 8137342 A GB8137342 A GB 8137342A GB 2091115 A GB2091115 A GB 2091115A
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GB
United Kingdom
Prior art keywords
shaft
tank
drive
premixing
stirrer
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
Application number
GB8137342A
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GB2091115B (en
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.)
FLEXINTER SA
Original Assignee
FLEXINTER 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 FLEXINTER SA filed Critical FLEXINTER SA
Publication of GB2091115A publication Critical patent/GB2091115A/en
Application granted granted Critical
Publication of GB2091115B publication Critical patent/GB2091115B/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • 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
    • B01F27/84—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers rotating at different speeds or in opposite directions about the same 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
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/82—Combinations of dissimilar mixers

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

Apparatus used in the manufacture of polyurethane foam, comprises a fixed support structure supporting a tank (1) through which extends two vertical concentric shafts (6, 14) and driven by an electric motor (2, 10) through a drive transmission (3, 4 5 and 11, 12, 13), at the lower end of the outer shaft (6) is a worm (7) rotatable within a sleeve (9) and at the lower end of the inner shaft (14) is a stirrer (15) located within a tube (18), located between the sleeve (9) and the tube (18) is a tapered duct (17) provided with nozzles (16) for introducing the catalyst which is mixed in the stirrer (15) with the material fed from the tank (1) by the worm (7), the premixed material being discharged through a valve (19) to a movable discharge duct (20) supported by a cable (22) which passes over a pulley (21). <IMAGE>

Description

SPECIFICATION Apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam The present invention relates to apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam.
According to the present invention there is provided apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam, comprising a fixed support structure, a tank for containing polyoil (polyol) supported by said structure, two electric motors carried by said structure and disposed with thin drive shafts extending vertically, said drive shafts being provided with pulleys or pinions engaging drive transmission belts or drives, one drive transmission being used to drive a first vertical shaft which extends through said tank and the other drive transmission being used to drive a second vertical shaft which is concentric with said first shaft and also extends through said tank, one shaft being used to drive means for moving material from the tank in a downward direction to a member located below the tank provided with means for introducing a catalyst component, and the other shaft being used to drive a mixing device for mixing the components, and means carried by the structure for receiving and discharging the mixed components.
The apparatus can obtain premixes with a high degree of homogeneity of the component product of polyurethane foam, generally polyoil (polyol) and catalyzers, whereby thorough stirring of the component products is attained and, consequently, the ideal premix thereof for the subsequent fabrication of blocks of the said foam.
Preferably the lower part of the tank is formed by an inverted frustoconical member whose smaller diameter end is connected to a cylindrical sleeve member of the same diameter.
Located within the cylindrical sleeve member is a worm provided on the lower end of the outer coaxial shaft and which constitutes said means for moving material from the tank in a downward direction.
In the lower end of said sleeve member is connected with a tapered duct provided with nozzles for introducing the catalyst component, the lower end of said tapered duct being connected to a cylindrical chamber in which is located a stirrer member provided on the lower end of the inner coaxial shaft and constituting said mixing device.
Preferably the stirrer member has a plurality of members which extend perpendicular to the inner coaxial shaft and extend inwardly therefrom which, when the inner shaft is rotated, carries out the premixing.
At the outlet end of the mixing means is a valve member which controls the discharge of the premixed material to a discharge duct movably mounted at one end in said structure and supported by a cable or the like which passes over a pulley carried by said structure.
An embodiment of the invention will now be described, by way of an example, with reference to the accompanying drawings, in which: Figure 1 is a front elevation of the apparatus, partly in section; and Figure 2 is an enlarged detail view, showing partially in section the impeller and stirrer elements.
Referring initially to Figure 1, shown therein is a cylindrical tank 1 which contains the polyoil (polyol), a motor 2 having a pulley or pinion 3 which is engaged with a belt or chain 4 to drive a pinion or pulley 5 so as to rotate a tubular shaft 6 and a worm 7 provided at the lower extremity of the shaft 6 in order to impel the polyoil downwardly through a cylindrical sleeve 9, after it has passed through a frusto-conical portion 8.
Asecond motor 10, using similar transmission system, drives a pinion or pulley 11 so as to move a transmission belt or chain 12 which connects with a pinion or pulley 13, and drives an innner coaxial shaft 14 coupled to a stirrer 15 which carries out the premixing of the products.
The polyoil (polyol) impelled by the worm 7 through the cylinder9 is mixed with catalyzers supplied through nozzles 16 and the mixture flows through a tapered duct member 17 and passes into a premixing chamber 18 in which the stirrer 15 is housed.
When the said premixing has been effected in the manner indicated above, it is then ready for its subsequent use in the fabrication of the polyurethane foam, for which purpose it has to pass through a valve member 19 to a movable duct 20 where workable direction can be adjusted, the duct 20 being supported by a cable or the like guided by a pulley 21.
Referring to Figure 2, shown therein from top to bottom is a part of the outer coaxial shaft 6, part of the inverted frusto-conical portion 8 of the tank 1, the worm 7 which impels the polyoil, the cylindrical sleeve 9 through which the said product drops, later passing into the inverted tapered trunk duct member 17 wherein it is supplied with the catayzers flowing through the nozzles 16.
Referring to the sectional view of the impeller worm 7, shown therein is the inner coaxial shaft 14 provided with the corresponding bearings to ensure its proper functioning, the shaft 14 is formed integrally with the stirrer element 15 located in the cylindrical chamber 18 wherein the premixing takes place.
1. Apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam, comprising a fixed support structure, a tank for containing polyoil (polyol) supported by said structure, two electric motors carried by said structure and disposed with thin drive shafts extending vertically, said drive shafts being provided with pulleys or pinions engaging drive transmission belts or drives, one drive transmission being used to drive a first vertical shaft which extends through said tank and the other drive transmission being used to drive a second vertical shaft which is concentric with said first shaft and also extends through said tank, one shaft being used to drive means for moving
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam The present invention relates to apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam. According to the present invention there is provided apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam, comprising a fixed support structure, a tank for containing polyoil (polyol) supported by said structure, two electric motors carried by said structure and disposed with thin drive shafts extending vertically, said drive shafts being provided with pulleys or pinions engaging drive transmission belts or drives, one drive transmission being used to drive a first vertical shaft which extends through said tank and the other drive transmission being used to drive a second vertical shaft which is concentric with said first shaft and also extends through said tank, one shaft being used to drive means for moving material from the tank in a downward direction to a member located below the tank provided with means for introducing a catalyst component, and the other shaft being used to drive a mixing device for mixing the components, and means carried by the structure for receiving and discharging the mixed components. The apparatus can obtain premixes with a high degree of homogeneity of the component product of polyurethane foam, generally polyoil (polyol) and catalyzers, whereby thorough stirring of the component products is attained and, consequently, the ideal premix thereof for the subsequent fabrication of blocks of the said foam. Preferably the lower part of the tank is formed by an inverted frustoconical member whose smaller diameter end is connected to a cylindrical sleeve member of the same diameter. Located within the cylindrical sleeve member is a worm provided on the lower end of the outer coaxial shaft and which constitutes said means for moving material from the tank in a downward direction. In the lower end of said sleeve member is connected with a tapered duct provided with nozzles for introducing the catalyst component, the lower end of said tapered duct being connected to a cylindrical chamber in which is located a stirrer member provided on the lower end of the inner coaxial shaft and constituting said mixing device. Preferably the stirrer member has a plurality of members which extend perpendicular to the inner coaxial shaft and extend inwardly therefrom which, when the inner shaft is rotated, carries out the premixing. At the outlet end of the mixing means is a valve member which controls the discharge of the premixed material to a discharge duct movably mounted at one end in said structure and supported by a cable or the like which passes over a pulley carried by said structure. An embodiment of the invention will now be described, by way of an example, with reference to the accompanying drawings, in which: Figure 1 is a front elevation of the apparatus, partly in section; and Figure 2 is an enlarged detail view, showing partially in section the impeller and stirrer elements. Referring initially to Figure 1, shown therein is a cylindrical tank 1 which contains the polyoil (polyol), a motor 2 having a pulley or pinion 3 which is engaged with a belt or chain 4 to drive a pinion or pulley 5 so as to rotate a tubular shaft 6 and a worm 7 provided at the lower extremity of the shaft 6 in order to impel the polyoil downwardly through a cylindrical sleeve 9, after it has passed through a frusto-conical portion 8. Asecond motor 10, using similar transmission system, drives a pinion or pulley 11 so as to move a transmission belt or chain 12 which connects with a pinion or pulley 13, and drives an innner coaxial shaft 14 coupled to a stirrer 15 which carries out the premixing of the products. The polyoil (polyol) impelled by the worm 7 through the cylinder9 is mixed with catalyzers supplied through nozzles 16 and the mixture flows through a tapered duct member 17 and passes into a premixing chamber 18 in which the stirrer 15 is housed. When the said premixing has been effected in the manner indicated above, it is then ready for its subsequent use in the fabrication of the polyurethane foam, for which purpose it has to pass through a valve member 19 to a movable duct 20 where workable direction can be adjusted, the duct 20 being supported by a cable or the like guided by a pulley 21. Referring to Figure 2, shown therein from top to bottom is a part of the outer coaxial shaft 6, part of the inverted frusto-conical portion 8 of the tank 1, the worm 7 which impels the polyoil, the cylindrical sleeve 9 through which the said product drops, later passing into the inverted tapered trunk duct member 17 wherein it is supplied with the catayzers flowing through the nozzles 16. Referring to the sectional view of the impeller worm 7, shown therein is the inner coaxial shaft 14 provided with the corresponding bearings to ensure its proper functioning, the shaft 14 is formed integrally with the stirrer element 15 located in the cylindrical chamber 18 wherein the premixing takes place. CLAIMS
1. Apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam, comprising a fixed support structure, a tank for containing polyoil (polyol) supported by said structure, two electric motors carried by said structure and disposed with thin drive shafts extending vertically, said drive shafts being provided with pulleys or pinions engaging drive transmission belts or drives, one drive transmission being used to drive a first vertical shaft which extends through said tank and the other drive transmission being used to drive a second vertical shaft which is concentric with said first shaft and also extends through said tank, one shaft being used to drive means for moving material from the tank in a downward direction to a member located below the tank provided with means for introducing a catalyst component, and the other shaft being used to drive a mixing device for mixing the components, and means carried by the structure for receiving and discharging the mixed components.
2. Apparatus as claimed in claim 1, in which the lower part of the tank is formed by an inverted frusto-conical member whose smaller diameter end is connected to a cylindrical sleeve member of the same diameter.
3. Apparatus as claimed in claim 2, in which located within the cylindrical sleeve member is a worn) provided on the lower end of the outer coaxial shaR and which constitutes said means for moving material from the tank in a downward direction.
4. Apparatus as claimed in claim 2 or claim 3, in which the lower end of said sleeve member is connected with a tapered duct provided with nozzles for introducing the catalyst component, the lower end of said tapered duct being connected to a cylindrical chamber in which is located a stirrer member provided on the lower end of the inner coaxial shaft and constituting said mixing device.
5. Apparatus as claimed in claim 4, in which the stirrer member has a plurality of members which extend perpendicularly to the inner coaxial shaft and extend inwardly therefrom which, when the inner shaft is rotated, carries out the premixing.
6. Apparatus as claimed in any preceding claim, in which at the outlet end of the mixing means is a valve memberwhich controls the discharge of the premixed material to a discharge duct movably mounted at one end in said structure and supported by a cable or the like which passes over a pulley carried by said structure.
7. Apparatus for carrying out premixing of the components used in the manufacture of polyurethane foam, substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
GB8137342A 1981-01-03 1981-12-10 Apparatus for premixing of the components used in the manufacture of polyurethane foam Expired GB2091115B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1981255357U ES255357Y (en) 1981-01-03 1981-01-03 DEVICE FOR PREMIXING IN THE MANUFACTURE OF POLYURETHANE FOAM

Publications (2)

Publication Number Publication Date
GB2091115A true GB2091115A (en) 1982-07-28
GB2091115B GB2091115B (en) 1984-11-21

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ID=8412519

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8137342A Expired GB2091115B (en) 1981-01-03 1981-12-10 Apparatus for premixing of the components used in the manufacture of polyurethane foam

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ES (1) ES255357Y (en)
GB (1) GB2091115B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116868A1 (en) * 1995-02-02 1998-07-16 Alcala Fibras Premixing mechanism for the manufacture of polyurethane foam
CN109395648A (en) * 2018-09-25 2019-03-01 崔云华 A kind of preparation process of water paint, device and its formula

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112439366B (en) * 2021-01-29 2021-05-18 东营威联化学有限公司 Isomerization device is used in production of pentane foamer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2116868A1 (en) * 1995-02-02 1998-07-16 Alcala Fibras Premixing mechanism for the manufacture of polyurethane foam
CN109395648A (en) * 2018-09-25 2019-03-01 崔云华 A kind of preparation process of water paint, device and its formula
CN109395648B (en) * 2018-09-25 2019-09-17 挪亚家家具（广东）有限公司 A kind of preparation process of water paint, device and its formula

Also Published As

Publication number Publication date
ES255357Y (en) 1981-11-16
ES255357U (en) 1981-05-01
GB2091115B (en) 1984-11-21

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PCNP Patent ceased through non-payment of renewal fee