JP2014069099A - Slit nozzle spray defoaming method and device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slit nozzle spray defoaming method and a device thereof in which a foam content contained in foam-containing liquid is separated from a liquid content and radially diffused by ejecting and spraying the foam-containing liquid using a slit nozzle mechanism faced in decompression environment, the foam content is effectively sucked and exhausted, liquid content is stored and thus, the liquid content in a defoamed condition is obtained,.SOLUTION: The slit nozzle spray defoaming method comprises: a foam-containing liquid pressurizing-holding step of enabling the foam-containing liquid to be introduced in a pressurized condition; a spray step of separating the gas content and the liquid content by radially spraying-ejecting the pressurized-transferred foam-containing liquid using the slit nozzle mechanism 3 formed of a slit hole 7 and a coil-shaped wire rod 9 crossing with the slit hole 7; a decompression processing step of enabling gas content to be sucked and exhausted in an enclosure shape; a liquid content holding storing step enabling the separated liquid content be held and stored; and a transfer step of taking out the defoamed liquid content.

Description

  The present invention includes various foods such as milk, soy milk and fruit juice, health supplements or nutrients, pharmaceuticals such as drinks, cosmetics such as facial liquids and hair washing materials, paints, battery pastes, other polymer resins, etc. The present invention relates to a slit nozzle spray defoaming method and apparatus for eliminating bubbles mixed in various liquid materials including a viscous liquid material.

  The inclusion of bubbles in the production process of various liquid foods, chemical products, pharmaceuticals, etc. is accompanied by many adverse effects such as product error, quality deterioration, and deterioration. A processing process such as Qi is incorporated.

  It is preferable to effectively eliminate air bubbles mixed or generated in the manufacturing process of the liquid product, and many configurations and apparatuses are known.

  For example, a defoaming apparatus or method called a cyclone or a centrifugal separation system is known (see, for example, Patent Document 1 and Patent Document 2).

JP 2006-27012 A JP-A-10-43293

  In each of Patent Documents 1 and 2 described above, when introducing the foam-containing liquid into the container, the bubbles are separated by swirling in the circumferential direction and arranging a mesh plate as a closing plate in the swirling flow passage. In the center, a cylindrical filter body is arranged to separate bubbles and separate from the liquid to remove bubbles, and the deaeration is restricted simply by the mesh size and the size of the filter body. This problem is inevitable.

  The present invention has been made paying attention to the above points, and by separating the bubble contained from the liquid component by discharging and spraying the bubble-containing liquid from the slit nozzle mechanism facing the reduced pressure environment. It is an object of the present invention to provide a slit nozzle spray defoaming method and apparatus for diffusing radially and effectively sucking and exhausting air to store a liquid component to obtain a degassed liquid component.

  The present invention can solve the above problems by providing the following configuration.

(1) a foam-containing liquid pressurizing and holding step capable of introducing the foam-containing liquid in a pressurized state;
A spraying process in which the gas-containing liquid is separated from the liquid by spraying and discharging the bubble-containing liquid to be pressurized and transferred radially from a slit nozzle mechanism formed by a slit hole and a coiled wire rod crossing the slit hole,
A decompression process that can inhale and discharge gas components in an enclosed manner,
Liquid content storage tank process that can store and store the separated liquid content,
A transfer process for removing the defoamed liquid,
A slit nozzle spray defoaming method characterized by comprising:

(2) A foam-containing liquid holding mechanism capable of holding the foam-containing liquid under pressure,
A plurality of vertical holes for dispersing and introducing the foam-containing liquid from the foam-containing liquid holding mechanism are provided with slit holes, and the gap between adjacent wire rods of the coiled wire that intersects with the slit holes is used as a spray nozzle. Nozzle mechanism that can vaporize and separate
A gas-liquid separation mechanism comprising a hollow chamber provided with a vacuum exhaust hole in front of the outer periphery of the slit nozzle mechanism and a storage chamber capable of storing a liquid component;
A slit nozzle spray defoaming device characterized by comprising:

  (3) The wire of the slit nozzle mechanism is engaged and fixed in a locking groove recessed in a coil shape, and the cross-sectional shape of the adjacent wire has a throttle structure in which the bubble-containing liquid introduction side is gradually narrowed. The slit nozzle spray defoaming device according to (2), wherein the side is formed in a trumpet shape that gradually expands.

  (4) The wire of the slit nozzle mechanism is any one of an isosceles triangle, a baseball type, a diamond cut type, a circle or an ellipse in cross-sectional shape. ) The slit nozzle spray deaerator according to any one of the above.

  According to the present invention, the spray nozzle configuration for pressurizing and spraying the foam-containing liquid is formed as a spiral slit between adjacent wire rods of the coil-shaped wire crossing the slit hole and the foam-containing liquid is radially formed. In addition to being sprayed, the contained bubbles can be separated or assembled to promote gas-liquefaction in the spray state, and separation from the liquid component is performed very effectively in a reduced pressure environment.

  In particular, it works effectively by defoaming a viscous foam-containing liquid, and can be widely used not only for various foods but also for medicines, cosmetics, chemicals and the like.

Partially cutaway side view showing one embodiment of a slit nozzle spray defoaming apparatus according to the present invention II-II line enlarged sectional view of FIG. III-III sectional end view of FIG. IV-IV sectional end view of FIG. (A), (b), (c), (d) and (e) Enlargement of the main part showing various examples of the coil-shaped wire rod of the slit nozzle mechanism and the overall configuration in which this wire rod is locked and fixed Cross section A developed view showing a slit nozzle mechanism formed in a cylindrical shape in a flat shape and partially cut out a wire.

  Examples of the present invention will be described below.

  Referring to the drawings, reference numeral 1 denotes a foam-containing liquid holding mechanism capable of pressurizing and supplying foam-containing liquid with a pump or the like, and includes a tank tank T having a desired volume, and a tube body 2 through which the foam-containing liquid is pressurized and circulated. It is connected.

  Reference numeral 3 denotes a slit nozzle mechanism provided at the tip of the foam-containing liquid holding mechanism 1. A coil-shaped locking groove 6 is provided on the outer peripheral side surface 5 of the bottomed cylindrical body 4, and adjacent locking grooves 6 are formed. A slit hole 7 is formed across, and a plurality of vertical holes 8 formed in an annular shape with the same diameter on the periphery of the bottom surface of the bottomed cylindrical body 4 are provided in communication with the slit hole 7. Then, the coil-shaped wire 9 having a preferred cross-sectional shape is engaged and fixed in the coil-shaped locking groove 6 to obtain a spray nozzle 10 having a width of micron to millicm between adjacent wires 9. it can. That is, a minute spray nozzle 10 is formed in a state orthogonal to the slit hole 7. Then, the coiled wire 9 is fixed in the coiled state with both ends of the beginning and end of winding, or the desired portion of the coiled wire is spot-welded, for example, by spot welding. The body 4 can be fixed and fixed integrally. And as for the cross-sectional structure of the coiled strand wire 9, many things are considered as shown in FIG. 5.

  In contrast to the acting force of the foam-containing liquid acting in the direction of the arrow, the configuration of FIG. 5 (b), FIG. 1 and FIG. 3 are of the home base type, and the adjacent wires 9 are provided with a cross-section restricting configuration α, and are flattened through a narrow passage shape β. It has a shape with a flat surface. Therefore, at the moment of ejection from the spray nozzle 10, the vaporized bubble component and the liquid component work on an average from a flat plane, but in the process of reaching and passing through the spray nozzle 10, the cross-section restriction configuration α As a result, the bubbles are adjacent to each other so that they can rapidly spread by spraying.

  Furthermore, FIG. 5 (c) cuts both triangular lines and has a diamond shape in cross section, and the opening of the spray nozzle 10 is expanded in a cross-sectional trumpet shape γ. It is possible to promote the action and expand the bubble to make the separation from the liquid component more effective.

  5D and 5E, the cross-sectional shapes are circular and elliptical. In this case as well, since the opening of the spray nozzle 10 is expanded in a trumpet shape γ, the diagram of FIG. In the spray discharge that is discharged in the same manner as in the configuration, the spreading action of the gas component is particularly promoted, and more effective separation of the gas component and the liquid component can be performed effectively.

  In addition, (b) and (e) are provided with a narrow passage shape β in the middle, so that the bubble passing therethrough is elongated, and vaporization is performed more effectively by spray diffusion at the open end. be able to.

  In the above configuration, the cross-sectional shape of the wire 9 is more preferably a throttle configuration α that gradually narrows on the introduction side of the bubble-containing liquid in an adjacent state, and on the spray side, a trumpet shape γ that gradually expands. It has been found that a certain configuration is more effective in degassing the gas than in the liquid.

  Reference numeral 11 denotes a gas-liquid separation mechanism, which is disposed in front of the outer periphery of the slit nozzle mechanism 3 and includes a hollow chamber 12 that effectively diffuses and sucks gas components, and a storage chamber 13 that temporarily stores liquid components. Composed.

  Reference numeral 14 denotes a vacuum pump connected to the hollow chamber 12, and 15 denotes a liquid supply pipe connected to the storage chamber 13, which is provided with an on-off valve 16 capable of adjusting the flow rate and is stored in the storage chamber 13. The on / off valve 16 can be controlled in flow rate or on / off control by the action of a sensor 17 provided above and below the gas-treated liquid.

  Reference numeral 18 denotes a tightening screw that can be fixed via the packing 19 with the flange 3 a provided in the slit nozzle mechanism 3 facing the flange Ta of the tank tank T of the foam-containing liquid holding mechanism 1.

  The operation will be described based on the above configuration.

  As the foam-containing liquid, various foods, health supplements, pharmaceuticals, cosmetics, and liquids in the manufacturing process or the final process such as paints, batteries, pastes, etc. are used, and the liquid is supplied to the tank T of the foam-containing liquid holding mechanism 1 Pressurized with a pump or the like and supplied through the tube 2.

  The bubble-containing liquid in the tank tank T is distributed and supplied to the plurality of vertical holes 8 of the bottomed cylindrical body 4, enters the slit hole 7, and is supplied to the slit nozzle mechanism 3. Pressure is transferred toward the coil-shaped wire rod 9 engaged with the locking groove 6 formed in the outer periphery of the bottom cylindrical body 4, and bubbles in the foam-containing liquid are vaporized from the spray nozzle 10 to form the hollow chamber 12. In addition, the liquid is discharged while maintaining the liquid state.

  Since the spray nozzle 10 faces the hollow chamber 12 in a reduced pressure environment, the gas component discharged from the spray nozzle 10 is quickly sucked and exhausted by the vacuum pump 14, and the gas component is removed. The liquid component falls into the storage chamber 13 and is stored.

  The deaerated liquid stored in the storage chamber 13 is supplied through the liquid supply pipe 15, and the on / off valve 16 is operated according to the elevation of the liquid level by the function of the sensor 17 provided in the storage chamber 13. Thus, the deaeration fluid can be smoothly and continuously fed out by adjusting the flow rate.

DESCRIPTION OF SYMBOLS 1 Foam-containing liquid holding | maintenance mechanism 2 Tubing body 3 Slit nozzle mechanism 3a Gutter part 4 Bottomed cylinder 5 Outer peripheral side surface 6 Locking groove 7 Slit hole 8 Vertical hole 9 Wire rod 10 Spray nozzle 11 Airflow separation mechanism 12 Hollow chamber 13 Reservoir chamber 14 Vacuum pump 15 Liquid supply pipe 16 On-off valve 17 Sensor 18 Tightening screw 19 Packing α Throttle configuration β Narrow passage shape γ Trumpet shape T Tank tank Ta collar

Claims (4)

A foam-containing liquid pressurizing and holding step capable of introducing the foam-containing liquid in a pressurized state;
A spraying process in which the gas-containing liquid is separated from the liquid by spraying and discharging the bubble-containing liquid to be pressurized and transferred radially from a slit nozzle mechanism formed by a slit hole and a coiled wire rod crossing the slit hole,
A decompression process that can inhale and discharge gas components in an enclosed manner,
Liquid content storage tank process that can store and store the separated liquid content,
A transfer process for removing the defoamed liquid,
A slit nozzle spray defoaming method characterized by comprising: A foam-containing liquid holding mechanism capable of holding the foam-containing liquid under pressure,
A plurality of vertical holes for dispersing and introducing the foam-containing liquid from the foam-containing liquid holding mechanism are provided with slit holes, and the gap between adjacent wire rods of the coiled wire that intersects with the slit holes is used as a spray nozzle. Nozzle mechanism that can vaporize and separate
A gas-liquid separation mechanism comprising a hollow chamber provided with a vacuum exhaust hole in front of the outer periphery of the slit nozzle mechanism and a storage chamber capable of storing a liquid component;
A slit nozzle spray defoaming device characterized by comprising:   The wire material of the slit nozzle mechanism is engaged and fixed in a locking groove recessed in a coil shape, and the cross-sectional shape of the adjacent wire material has a throttle structure in which the foam-containing liquid introduction side gradually narrows, and the spray side is The slit nozzle spray defoaming device according to claim 2, wherein the slit nozzle spray defoaming device has a trumpet shape that gradually expands.   The wire rod of the slit nozzle mechanism is any one of an isosceles triangle, a baseball type, a diamond cut type, a circle, or an ellipse in cross-sectional shape. The slit nozzle spray defoaming device described.

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