KR101466878B1 - Foaming material nucleation machine with double mixer - Google Patents

Abstract

The present invention provides a foaming material nucleation apparatus with a double mixer. The foaming material nucleation apparatus with a double mixer according to the present invention smoothly and effectively performs nucleation performed by injecting air into foaming materials such as polyol or isocyanate and allows a predetermined amount of nucleated foaming materials to be discharged and supplied. The foaming material nucleation apparatus with a double mixer according to the present invention comprises: a raw material supplier which supplies raw materials; an air supplier which supplies air with set pressure; a supply pipe which allows air and raw materials to be moved by being connected to the raw material supplier and air supplier; a first mixer which is installed on the supply pipe and allow air and raw materials to be mixed while being passed; a second mixer which is installed on the supply pipe at a position separated from the first mixer and allows air and raw materials passed through the first mixer to be mixed while being passed; and a discharge pipe which allows air mixed raw materials discharged from the second mixer to be moved by being connected to the second mixer. One selected from the first mixer and the second mixer is one selected from a static mixer in which a blend inducing means of a predetermined shape is arranged on an inner passage and a dynamic mixer in which a rotating impeller is arranged on an inner passage.

Description

{Foaming material nucleation machine with double mixer}

The present invention relates to an apparatus for producing a raw material for forming a foamed molding material to which a double mixer is applied and more particularly to an apparatus for producing a foamed molding material, To a foam molding raw material nucleation apparatus to which a double mixer is applied in which a nucleated foam molding raw material can be discharged in a predetermined amount.

The preparation of the polyurethane foam is carried out through a mixing head in which the liquid polyol and isocyanate are mixed and supplied. The homogeneous mixture of the polyol and the isocyanate mixed in the mixing head is supplied to the inside of the product mold having the predetermined shape, It is common that various forms of polyurethane foam products are made.

With regard to the mixing head used in the production of the polyurethane foam, the present inventor has proposed a method of producing a high-efficiency high-pressure mixing head bundle according to Korean Patent Registration No. 10-0368178 entitled " 2011-0014417 "Mixing head of low-pressure blower ", Publication No. 10-2002-0001689" A bundle of mixing heads for preventing sticking and scratching by providing a spiral groove on a cleaning rod " 20-0170956 "a bundle of mixing heads of a polyurethane high-pressure blower ".

On the other hand, in order to perform foaming of a polyurethane foam, it has been necessary to inject air into a foaming molding material such as polyol or isocyanate so that nucleation can be achieved. Conventionally, a spiral- There is a limit to increase the nucleation efficiency of the mixer (static mixer) by allowing the foaming molding material and the air to pass through nucleation in the foaming molding material.

Korean Patent Registration No. 10-0368178 entitled "A high-efficiency high-pressure mixing head bundle by a double-angle injection method" Korean Patent Laid-Open Publication No. 10-2011-0014417 "Mixing Head of Low Pressure Foaming Machine" Korean Patent Laid-Open Publication No. 10-2002-0001689 "A bundle of mixing heads for preventing sticking and scratching by providing a spiral groove on a cleaning rod" Korean Utility Model Registration No. 20-0170956 entitled "Bundle of mixing heads of polyurethane high-pressure blower"

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a static mixer and a dynamic mixer to be installed on a supply pipe of a foam molding material, The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a foam molding raw material nucleus generation apparatus using a new type of double mixer capable of performing nucleation smoothly and efficiently.

It is another object of the present invention to provide a foam molding raw material nucleation apparatus to which a new type of double mixer is applied in which a nucleation produced foam molding material can be discharged and supplied in a predetermined amount by application of a metering pump and a calibration tank .

According to an aspect of the present invention, there is provided an apparatus for supplying a raw material, comprising: a raw material feeder for supplying raw material; An air supply unit for supplying air at a predetermined pressure; A feed pipe connected to the raw material feeder and the air feeder to move the raw material and air; A first mixer installed on the supply pipe and mixing the raw material and air while passing therethrough; A second mixer installed on the supply pipe at a position spaced apart from the first mixer and allowing the raw material and air passing through the first mixer to mix while passing therethrough; And a discharge pipe connected to the second mixer and through which the air mixture material discharged from the second mixer moves, wherein one of the first mixer and the second mixer has a mixed- And a dynamic mixer in which a rotating static impeller is disposed and a rotating impeller is disposed in an inner passageway. The present invention provides an apparatus for producing a foamed molding material nucleus to which a dual mixer is applied.

The apparatus for producing a foamed molding material according to the present invention includes a metering pump connected to the discharge pipe and configured to discharge a predetermined amount of air mixed material to the outside; And a calibration tank connected to the discharge pipe and containing an air mixing raw material discharged from the second mixer in excess of a predetermined amount of the air mixing raw material discharged from the metering pump.

The first mixer may be a static mixer, the second mixer may be a dynamic mixer, and the first mixer may include a first mixer and a second mixer, A supply pump is installed on the supply pipe.

In the apparatus for producing nuclear foam raw material to which the double mixer according to the present invention is applied, the dynamic mixer includes a twist-type rotary impeller in which a plurality of twisted wing surfaces twisted in a set pattern are radially formed, Shaped rotary pinion rotary impeller is disposed at the other end of the inner passage connected to the discharge port, and the blade-type rotary impeller in which a plurality of flat wing surfaces are radially formed is disposed in the twist- Place it between the impeller and the pinhole rotating impeller.

In the dynamic mixer according to the present invention, the interval between the plurality of rotation impellers and the interval between the plurality of fixed impellers is gradually narrowed from the one end of the inner passage toward the other end do.

According to the present invention, since the foam molding raw material such as polyol or isocyanate is passed through the static mixer and the dynamic mixer while the nucleation is performed, the foam molding raw material nucleus producing apparatus to which the double mixer is applied, The nucleation is smoothly and efficiently performed, and the metering pump and the calibration tank are additionally provided, so that the nucleated foam molding material is discharged and supplied in a predetermined amount.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a basic configuration of a foam molding raw material nucleation apparatus to which a double mixer is applied according to an embodiment of the present invention; FIG.
FIG. 2 and FIG. 3 are views showing a detailed configuration of a foam molding raw material nucleation apparatus to which a double mixer is applied according to an embodiment of the present invention;
FIG. 4 is a view illustrating a detailed configuration of a dynamic mixer forming a foam molding raw material nucleus production apparatus to which a double mixer is applied according to an embodiment of the present invention; FIG.
FIG. 5 is a diagram illustrating a detailed configuration of a main part of a dynamic mixer according to an embodiment of the present invention; FIG.
6 (a) and 6 (b) are views showing a detailed configuration of a rotating impeller and a fixed impeller constituting a dynamic mixer according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings 1 to 6. In the drawings and the detailed description, it is to be understood that those skilled in the art will be able to easily understand the constitution and the like from general polyurethane foam, polyurethane foam foam molding, polyol, isocyanate, foam molding raw material nucleation, static mixer, dynamic mixer, The schemes and references to the action are brief or omitted. In the drawings and specification, there are shown in the drawings and will not be described in detail, and only the technical features related to the present invention are shown or described only briefly. Respectively.

The apparatus for producing a foamed molding material nucleus 100 according to an embodiment of the present invention includes a raw material supplier 10, an air supplier 20, a supply pipe 30, a first mixer 40, a second mixer 60, a supply pump 50, a discharge pipe 31, a metering pump 70, and a calibration tank 80.

The raw material supplier 10 supplies the foamed molded liquid raw material such as polyol or isocyanate to the supply pipe 30.

The air supply 20 supplies the air at the set pressure to the supply pipe 30. [ The air supply unit 20 includes an air supply manifold valve 21 for sucking and boosting air, an air flow meter 23 for measuring the flow rate of air, an air tank 24 for storing the pressurized air, A check valve 25 for controlling the supply of air to the pressure gauge 22 and the supply pipe 30, and an on-off valve 26.

The supply pipe 30 is connected to the raw material feeder 10 and the air feeder 20 so that the foamed molded raw material and the air move. An inlet manifold 90 is provided on a supply pipe 30 at a portion where the raw material feeder 10 and the air feeder 20 are connected so that the foamed molded raw material and the air are supplied simultaneously through the inlet manifold 90 To the supply pipe 30. Further, a pressure gauge 91 is provided at a set point on the supply pipe 30 so that the pressure of the foam-molded liquid raw material passing through the supply pipe 30 is measured. Wherein the pressure gauge 91 is installed between the first mixer 40 and the feed pump 50 and between the feed pump 50 and the second mixer.

The first mixer 40 and the second mixer 60 are installed on the supply pipe 30 so that the foamed molded liquid material and air are mixed while passing through the mixer 40. The second mixer 60 is connected to the first mixer 40 And is disposed on the supply pipe 30 at a spaced position so that the foam-molded liquid raw material passed through the first mixer 40 and the air are mixed while being passed through.

The first mixer 40 may be a static mixer in which a mixing tool of a predetermined shape is disposed in an inner passage or a dynamic mixer in which a rotating impeller 615 is disposed in an inner passage . The second mixer 60 may also be a static mixer in which a mixing tool having a predetermined shape is disposed in an inner passage or a dynamic mixer in which a rotating rotary impeller 615 is disposed in an inner passage .

Here, the first mixer 40 according to the embodiment of the present invention comprises a static mixer 41, and the second mixer 60 comprises a dynamic mixer 61.

The feed pump 50 is installed on the feed pipe 30 between the first mixer 40 and the second mixer 60 to induce smooth movement of the foamed molded liquid raw material. A gear pump 51 is used as the feed pump 50 according to the embodiment of the present invention.

The discharge piping 31 is connected to the second mixer 60 to move the air-mixing foamed liquid raw material discharged from the second mixer 60.

The metering pump 70 is connected to the discharge pipe 31 so that a predetermined amount of air-mixing foamed liquid raw material is discharged to the outside.

The calibration tank 80 is connected to the discharge pipe 31 on the opposite side of the metering pump 70. The air-mixing foamed liquid raw material discharged from the second mixer 60 in excess of the predetermined amount of air-mixing foamed liquid raw material discharged from the metering pump 70 is led to and accommodated in the calibration tank 80 as shown in FIG. 3 .

Here, the controller (not shown) of the apparatus 200 for producing a foamed molding material using a double mixer according to an embodiment of the present invention measures the flow rate of air-mixed foamed liquid raw material discharged from the metering pump 70 in real time When the amount is less than the predetermined amount, the on-off valve 312 is closed and the on-off valve 311 is kept open. When the cumulative flow rate of the air-mixed foamed liquid raw material discharged from the metering pump 70 reaches a predetermined fixed amount Closing valve of the reference numeral 312 is closed and the opening / closing valve of the reference numeral 311 is closed so that the air-mixing foamed liquid raw material discharged from the second mixer 60 is introduced into the calibration tank 80 to be accommodated therein .

Meanwhile, the dynamic mixer 61 used in the second mixer 60 according to the embodiment of the present invention is composed of a turbo dynamic mixer 61 having a variable multi-stage rotation impeller. The turbo dynamic mixer 61 having the variable multi- 4 and 5, the mixer includes a housing 611, a rotating shaft 613, a plurality of rotating impellers 615, and a plurality of fixed impellers 616.

The housing 611 has a supply port 6111 and an outlet port 6112 connected to the internal passage 6113 formed in the longitudinal direction. The supply port 6111 is protruded from the outer circumferential surface of one end of the housing 611 to receive a liquid raw material such as polyol, isocyanate or the like. The outlet 6112 protrudes forward from the other end of the housing so that the liquid raw material passing through the inner passage 6113 is discharged. The housing 611 is integrally coupled to a driving motor 612 for rotating the rotating shaft 613.

The rotating shaft 613 is disposed in the longitudinal direction of the inner passage 6113 of the housing 611 and rotates to be coupled to the driving motor 612 and the coupling 6122. A plurality of rotating impellers 615 are integrally formed on the rotating shaft 613.

The plurality of rotating impellers 615 are formed on the rotating shaft 613 so as to be spaced apart from each other and are arranged along the longitudinal direction of the rotating shaft 613. Such a plurality of rotating impellers 615 is configured to include at least one twist type rotating impeller 615a, at least one blade type rotating impeller 615b, and at least one pin hole rotating impeller 615c. The rotating impeller 615 according to the example includes a plurality of twist type rotating impellers 615a, twist type rotating impellers 615a and 615b disposed at one end of an internal passage 6113 connected to the supply port 6111 of the housing 611, A plurality of pinhole rotary impellers 615c disposed at the intermediate portion of the inner passage 6113 between the pinhole rotary impellers 615c and an inner passage 6113 connected to the outlet 6112. A plurality of pinhole rotary impellers 615c.

The twist type rotary impeller 615a has a structure in which a plurality of twisted wing surfaces 6151, which are twisted in a setting pattern as shown in FIG. 6 (a), are radially formed, so that the liquid raw material fed into the supply port 6111 is twisted So as to flow on the twisted wing surface 6151 of the rotating impeller 615a. Accordingly, when the liquid raw material flowing into the internal passageway 6113 flows, the frictional resistance is minimized, so that the flow and flow of the liquid raw material can be smoothly performed. On the other hand, the liquid raw material injected into the supply port 6111 is mixed or atomized while passing through the rotating twist type rotary impeller 615a, and the air introduced into the internal passage 6113 passes through the rotating twist type rotary impeller 615a And is mixed with the liquid raw material while finely crushing to produce air bubbles.

The blade-type rotation impeller 615b has a structure in which a plurality of planar blade surfaces 6152 are radially formed as shown in FIG. 6 (a). The liquid raw material having passed through the twist type rotary impeller 615a is mixed or atomized while passing through the rotating blade type rotary impeller 615b and the air having passed through the twist type rotary impeller 615a flows through the rotating blade type rotary impeller 615b Lt; / RTI > and then mixed with the liquid feedstock while producing air bubbles.

6A, the pinhole rotary impeller 615c has a hollow disc shape in which the through hole 6153 is formed in a set pattern, and the through hole 6153 of the rotating pinhole rotary impeller 615c is filled with the liquid raw material And mixed with the liquid raw material while passing through the air hole 6153 of the rotating pinhole rotary impeller 615c while being finely crushed into ultra fine air bubbles. The through hole 6153 may have various shapes such as a circular shape, a diamond shape, and a diamond shape.

The plurality of stationary impellers 616 are spaced from each other on the inner circumferential surface of the housing 611 surrounding the inner passage 6113 and are arranged along the longitudinal direction of the housing 611. The plurality of stationary impellers 616 may include one or more blade-shaped stationary impellers 616a and one or more pinhole stationary impellers 616b. The stationary impeller 616 according to an embodiment of the present invention may include a plurality of stationary impellers 616a, A plurality of blade-type fixed impellers 616a disposed at one end of an internal passage 6113 connected to the supply port 6111 of the discharge port 611; an internal passage 6113 connected to the discharge port 6112; And pinhole fixed impellers 616b.

6 (b), the blade-type fixed impeller 616a is formed by radially forming a plurality of flat blade surfaces 6152, and the pinhole fixed impeller 616b has a through hole 6153 as shown in FIG. 6 (b) Is formed in a hollow disc shape formed by the setting pattern. The through hole 6153 may have various shapes such as a circular shape, a diamond shape, and a diamond shape.

The interval between the plurality of rotating impellers 615 and the interval between the plurality of fixed impellers 616 gradually narrows from the one end to the other end of the inner passage 6113. The plurality of rotating impellers 615 and the plurality of fixed impellers 616 are alternately arranged along the longitudinal direction of the inner passage 6113 and are spaced apart from each other by an interval between the rotating impeller 615 and the fixed impeller 616, As shown in FIG. 3, gradually narrows from the one end to the other end of the inner passage 6113.

Accordingly, the twist-type rotary impeller 615a and the blade-type fixed impeller 616a, which are disposed at relatively wide intervals at the one end of the inner passage 6113 connected to the supply port 6111, And the pinhole rotary impeller 615c and the pinhole fixed impeller 616b which are densely arranged in a narrow space at the other end of the inner passage 6113 connected to the discharge port 6112 are passed through the liquid material or air The discharge to the discharge port 6112 is smoothly and easily performed due to the pressure generated in the discharge.

The turbo dynamic mixer according to the embodiment of the present invention includes a gap maintaining ring 614 and a gap maintaining ring 6141 on the rotary shaft 613 so as to maintain a spacing between the rotary impellers 615 and a spacing between the fixed impellers 616, And the inner circumferential surface of the housing 611.

The static mixer 41 and the dynamic mixer 61 are installed on the supply pipe 30 for the foam molding material so that the static mixer 41 and the dynamic mixer 61 are installed on the supply pipe 30 of the foam molding material. It is possible to smoothly and efficiently perform nucleation performed by air injection into the foam molding material and to prevent the nucleated foam molding raw material from being generated by the application of the metering pump 70 and the calibration tank 80 And can be discharged and supplied in a predetermined amount.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention.

10: raw material feeder 11:
20: air feeder 21: air donation pressure valve
22: air pressure gauge 23: air flow meter
24: air tank 25: check valve
26: opening / closing valve 30: supply pipe
31: discharge pipe 311, 312: open / close valve
40: first mixer 41: static mixer
50: feed pump 51: gear pump
60: second mixer
61: Dynamic mixer 611: Housing
6111: Feed port 6112:
6113: internal passage 612: drive motor
6122: Coupling 613:
6131: Retaining ring 6132, 6133: Bearing
614, 6141: Ring for maintaining gap 615: Rotating impeller
615a: Twist type rotary impeller 615b: Blade type rotary impeller
615c: Pinhole rotating impeller 6151: Torsional wing surface
6152: flat blade surface 6153, 6162: through hole
616: fixed impeller 616a: blade type fixed impeller
616b: Pinhole fixed impeller
70: metering pump 80: calibration tank
90: inlet manifold 91: pressure gauge
100: foam molding raw material nucleation device with dual mixer

Claims (5)

A raw material feeder for feeding the raw material;
An air supply unit for supplying air at a predetermined pressure;
A feed pipe connected to the raw material feeder and the air feeder to move the raw material and air;
A first mixer installed on the supply pipe and mixing the raw material and air while passing therethrough;
A second mixer installed on the supply pipe at a position spaced apart from the first mixer and mixing the raw material and air passing through the first mixer while passing therethrough;
A discharge pipe connected to the second mixer for moving the air mixture material discharged from the second mixer;
A metering pump connected to the discharge pipe for discharging a predetermined amount of the air mixture material to the outside;
And a calibration tank connected to the discharge pipe and containing an air mixing raw material discharged from the second mixer in excess of a predetermined amount of the air mixing raw material discharged from the metering pump,
The first mixer and the second mixer are selected from a static mixer in which a mixing tool having a predetermined shape is disposed in an inner passage and a dynamic mixer in which a rotating rotary impeller is disposed in an inner passage, Wherein the first and second mixers are selected from the group consisting of the first mixer and the second mixer. delete The method according to claim 1,
Wherein the first mixer comprises a static mixer, the second mixer comprises a dynamic mixer,
Wherein a feed pump is installed on the feed pipe between the first mixer and the second mixer. The method according to claim 1,
Wherein the dynamic mixer includes a twin-type rotary impeller in which a plurality of twisted wing surfaces twisted in a set pattern are formed in a radial pattern, the twin-type rotary impellers being disposed at one end of an inner passage connected to the supply port, Wherein the impeller is disposed at the other end of the inner passage connected to the discharge port, and a blade-type rotary impeller in which a plurality of flat wing surfaces are formed radially is disposed between the twist type rotary impeller and the pinhole rotary impeller. Applied foam molding nucleating device. The method according to claim 1,
Wherein the dynamic mixer is configured such that the intervals between the plurality of rotation impellers and the interval between the plurality of fixed impellers are gradually narrowed from one end of the inner passage toward the other end.

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