JP5405693B1 - Method and apparatus for degassing foam-containing liquid - Google Patents

Abstract

The present invention uses a laminar flow phenomenon that occurs when a liquid is moved into a cylinder, collects and expands bubbles in the laminar flow, ejects and separates them from a discharge port, and removes bubbles. Foam-containing liquid pressurized supply step, one-layer or multi-layer ring rectification step capable of thin-film rectification of the bubble-containing liquid supplied under pressure, bubble-containing liquid being transferred during the ring-tube rectification step Bubble expansion process for rectifying and pressurizing bubbles in the liquid to expand the confluence, gas separation process for separating and discharging the bubbles from the liquid by opening the throttle from the discharge port, and the liquid component separated from the bubbles in a radial umbrella shape A degassing method for a foam-containing liquid, comprising a liquid diffusion step of spreading.

Description

  The present invention includes various foods such as milk, soy milk, fruit juice, health supplements or nutritional agents, pharmaceuticals such as drinks, cosmetics such as facial liquids, hair washings, paints, battery pastes, other chemicals, The present invention relates to a degassing method and apparatus for a bubble-containing liquid that removes and eliminates bubbles mixed in various liquid materials including viscous liquid materials such as polymer resins.

  The technical field of using liquids as final products covers a wide range of products, including food, medicine, and polymer chemicals.

  And since it is a liquid product, the bubble which mixes or generate | occur | produces from a physical property, such as a density | concentration and an accuracy, has many problems on quality essentially, and it is inevitable to eliminate.

  Although it may be performed chemically using an antifoaming agent, it often has an adverse effect on the quality control of liquid products and is not general. Therefore, in many cases, a method and an apparatus for defoaming by a mechanical method are used.

  Specifically, a degassing method and apparatus for a foam-containing liquid called a cyclone or a centrifugal separation method are known (see, for example, Patent Document 1 and Patent Document 2).

  Furthermore, regarding the bubble separation device, the bubble-containing liquid is caused to flow from the gap between the rotation shaft of the rotating tank and the surrounding through hole, and the bubbles in the liquid are taken out by flowing down on the guide member on the upper surface of the rotating tank, In addition, it is known to recover a liquid from which bubbles have been removed (see, for example, Patent Document 3).

  Furthermore, regarding a vacuum defoaming apparatus used for a coating apparatus, a foam-containing liquid is discharged from a liquid film forming nozzle whose tip is reduced in diameter, and a liquid film having a circular shape in a plan view is formed after colliding with some member, It is known to take out bubbles in the liquid by reducing the pressure and collect the liquid from which the bubbles have been removed (see, for example, Patent Document 4).

  In addition, literatures for separating various gas-liquids are also known (see, for example, Patent Documents 5, 6, 7, and 8).

JP 2006-27012 A JP-A-10-43293 JP 57-197004 A JP 2006-122812 A JP-A 51-17175 JP-A 61-268305 Japanese Utility Model Publication No. 5-93502 Japanese Patent Publication No. 47-27288

  In both of Patent Documents 1 and 2 mentioned 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 swirl flow passage. In addition, a cylindrical filter body provided in the center is installed to separate the bubbles and separate them from the liquid, and the deaeration is controlled simply by the mesh size and the size of the filter body. The problem of being inevitable is inevitable.

  Further, the bubble separation device of Patent Document 3 does not have a configuration in which the liquid that has passed through the gap is bent in the direction of the rotation axis.

  Further, the vacuum defoaming device of Patent Document 4 does not have a configuration in which the liquid flows in an annular shape in the liquid film forming nozzle.

Furthermore, Patent Documents 5, 6, 7 and 8 do not have a configuration provided with the defoaming mechanism of the present invention.

  On the other hand, the present applicant conducts the bubble-containing liquid that has been pressed and pressurized through a cylindrical tubular channel formed in one or more multi-annular tubular shapes so that bubbles in the liquid are long and adjacent bubbles. Disperse the polymer component into an expanded state, and once agglomerate directly or in the center, then expand it horizontally and circumferentially with respect to the center of the shaft to effectively separate the liquid component and the bubble component. In addition, there is a fact that a gas-containing liquid degassing method and an apparatus for removing the gas content after discharging and a degassed liquid content can be taken out (PCT / JP2012 / 063939) have been developed. ).

  The present invention further develops the above-described developed invention, and allows the bubble-containing liquid that has been pressed and pressurized to pass through one or more cylindrical tubular straight channels formed in a multi-ring shape so as to be contained in the liquid. Displace the bubbles in the outer circumference in the process of expanding and expanding the bubbles of the adjacent bubbles in an elongated manner, and discharging the discharge opening as a constricted configuration, separating and discharging the bubbles in the liquid, and easily It is an object of the present invention to provide a degassing method and apparatus for a foam-containing liquid that can efficiently remove a degassed liquid.

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

(1) foamed liquid pressure supplied foamed liquid pressurized feed step, further to multilayer collar rectifying step a foamed liquid can thin layer rectified ring tubular supplied under pressure, the ring tube rectification process in A bubble expanding step for rectifying and pressurizing bubbles in the bubble-containing liquid being transferred to the expanded liquid, a gas separating step for separating and discharging the bubbles from the liquid by opening the throttle from the discharge port, and a liquid component separated from the bubbles A degassing method for a foam-containing liquid, characterized by comprising a liquid diffusion step of expanding the liquid into a radial umbrella shape.

(2) a foam-containing liquid pressurizing and supplying mechanism for supplying foam-containing liquid under pressure;
A cylindrical laminar flow forming tube for introducing a bubble-containing liquid to be supplied under pressure, the laminar flow forming tube includes a cylindrical tube capable of forming an outer cylinder, and an inner layer formed at the center of the cylindrical tube. A tubular layer flow path mechanism of an annular tubular foam-containing liquid formed through one or more gaps and disposed therein;
A narrow gas-liquid separation outlet mechanism that squeezes the foam-containing liquid to the discharge side of the tubular layer flow path mechanism;
A diffusion plate mechanism for flowing down a liquid component obtained by exhausting and separating bubbles discharged by the mechanism;
A liquid recovery and storage tank mechanism for stationary recovery and storage of degassed liquid;
A degassing device for a foam-containing liquid, comprising:

  (3) The degassing of the foam-containing liquid according to (2), wherein the foam-containing liquid storage section for introducing and holding the foam-containing liquid is provided in the introduction section of the tubular layer flow path mechanism of the foam-containing liquid. apparatus.

  (4) The bubble-containing liquid degassing apparatus according to (2), wherein a single-layer or multi-layer flow path of the bubble-containing liquid is formed in the gap of the tubular layer flow path mechanism of the bubble-containing liquid. .

(5) The bubble-containing liquid deaeration device according to (2), wherein the gas-liquid separation / discharge port mechanism is provided with an umbrella mechanism for flowing down the liquid from which the gas has been separated.

(6) The bubble-containing liquid deaeration apparatus according to (2), wherein the gas-liquid separation / discharge port mechanism has a throttle configuration by expanding or reducing the diameter of either the cylindrical tube or the inner layer body.

(7) a tubular layer flow channel mechanism of bubble-containing liquid, a circular cross-section, an oval, a triangle, a, which is a one of pentagon-shaped (2) degassing apparatus foamed liquid according.

  (8) The bubble-containing liquid deaeration device according to (2), wherein the liquid recovery and storage tank mechanism is provided with a pressure reducing mechanism for sucking and exhausting the exhausted gas.

  According to the present invention, when the bubble-containing fluid is pressurized and transferred, the bubbles in the liquid are extended and rectified by diverting them into one or more annular tubular layers, so that adjacent bubbles are Combined and expanded, and through the squeezing action of the discharge / discharge port, the bubbles in the liquid are compressed and simultaneously ejected to separate from the liquid into a vaporized state, which is very effectively separated from the liquid. .

If laminar flow of foamed liquid is 2 or more laminar action expanded, polymerization expanding gas partial in laminar flows is promoted, efficient foam diversion effects of each of the ejection portions is increased The body and liquid can be separated and taken out.

Sectional side view which shows an example of the defoaming apparatus which concerns on this invention II-II sectional view of FIG. Cross-sectional explanatory drawing showing another embodiment of the present invention Sectional view taken along line IV-IV in FIG.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

  An embodiment of the present invention will be described below with reference to the drawings.

  First, the configuration of FIGS. 1 and 2 will be described.

  Reference numeral 1 denotes a supply pipe of a foam-containing liquid supply mechanism 2 that pressurizes and supplies a foam-containing liquid, 3 denotes a foam-containing liquid stagnation part necessary for rectifying the foam-containing liquid supplied from the supply pipe 1 into a laminar flow, Reference numeral 4 denotes a laminar flow forming tube formed relatively longer than the bubble-containing liquid reservoir 3, and includes a cylindrical tube 5 forming an outer wall and an inner layer body 6 formed at the center of the cylindrical tube 5. And a tubular layer flow path mechanism 7 corresponding to the gap g is formed between the inner layer body 6 and the cylindrical tube 5.

  Reference numeral 8 denotes a gas / liquid separation / discharge port formed on the discharge side of the bubble-containing liquid of the laminar flow forming tube 4 and is formed as a throttle structure so as to narrow the gap g. This throttle structure is a narrow throttle discharge mechanism and can be formed by expanding or reducing the diameter of either the cylindrical tube 5 or the inner layer body 6. Reference numeral 9 denotes an arc-shaped protruding portion that protrudes outward at the gas-liquid separation / discharge port 8 of the inner layer body 6, and the gas-liquid separated foam-containing liquid discharged from the gas-liquid separation / discharge port 8 Presents work to guide the direction.

  A diffusion plate mechanism 10 is provided along the cylindrical tube 5 of the gas-liquid separation discharge port 8 for flowing down the umbrella-shaped separation liquid, and 11 is a detachment plate disposed on the outer periphery of the diffusion plate mechanism 10. This is a liquid collection / reservation tank that can store the bubbled liquid, and the opening 12 of the liquid collection / reservation tank 11 is open to the atmosphere. It is also possible to perform suction under reduced pressure. Reference numeral 13 denotes a discharge port, which measures the water level in the liquid recovery storage tank 11 so that it can be drained sequentially.

  Further, in the above configuration, the cylindrical tube 5 of the laminar flow forming tube 4 is fixedly erected via the base 14 and an intermediate member, and the inner layer body 6 inserted into the cylindrical tube 5 has a conical portion at the tip. The fixing rod 17 having the 15 inserted into the concave conical receiving body 16 and inserted through the center thereof can be inserted into the base 14 and fixed by a retaining ring 18 such as a nut.

The support rod for supporting the diffusion plate mechanism 10 is 19, 20 thereof thumbscrew 21 is a stop rod which supports the base plate 14 can also be attached a movable freely pulley.

  The operation will be described based on the above configuration.

  The bubble-containing liquid mixed with bubbles is supplied to the supply pipe 1 through the bubble-containing liquid supply mechanism 2 and introduced into the laminar flow forming tube 4. The bubble-containing liquid immediately enters the bubble-containing liquid retention part 3 and is introduced into the tubular layer flow path mechanism 7 corresponding to the outer peripheral interval g, and is subjected to laminar flow action. Then, it expands to reach the gas-liquid separation discharge port 8, where the gap g is narrower and the squeezing effect works, and the foam-containing liquid is compressed and aggregated and sprayed and discharged. The gas component is separated from the liquid component, and is released to the atmosphere from the opening 12 of the liquid recovery storage tank 11. The liquid component is led out toward the outer periphery by the arc-shaped protrusion 9, flows down along the umbrella-shaped diffusion plate mechanism 10 in a deaerated state, flows down and is stored in the liquid recovery storage tank 11, and is constant. After the amount storage, a degassed liquid can be obtained from the discharge port 13.

  Next, the embodiment of FIGS. 3 and 4 will be described.

This embodiment is intended gap g has a two-layer structure, in which is disposed a cylindrical tube 5a, 5b were different in double the inner diameter to the outer periphery around the inner body 6, this such of the inner cylinder tube 5a , 5b are provided with umbrella-shaped diffusion plate mechanisms 10a, 10b having substantially the same diameter and the same size.

Then, the outer peripheral portion in a double gap g _1, g ₂ a provided tubular layer flow channel mechanism 7a of laminar flow formed tube 4A, 7b is formed, a short time defoamed adapted to a large amount of bubble-containing liquid Can be done efficiently. Since the other mechanism configuration is the same as that of the above-described embodiment, the same reference numerals are given and the detailed description is omitted. Here, the size of the double gaps g ₁ and g ₂ may be the same or different, and is not limited at all.

In the above-described embodiment , the length of the laminar flow forming tubes 4 and 4A is preferably long, the length is not specified at all, and the cross-sectional shape of the laminar flow forming tubes 4 and 4A is not specified. In addition to circles and ellipses, polygons such as triangles and rectangles can be used.

  The defoamed recovered liquid flowing out from the outer peripheral ends of the umbrella-shaped diffusion plate mechanisms 10, 10a, 10b is supplied into the liquid recovery storage tank 11 in a flowing state, but in order to avoid dripping. In addition, a hanging plate (not shown) that assists the flow of the liquid can be attached to prevent the formation of a dripping situation that may generate bubbles.

  Further, instead of the support rod 19, a support rod 19 a is held with the upper end fixed to the liquid recovery storage tank 11.

  Moreover, it can implement by the same structure also when forming a laminar flow more than triple.

DESCRIPTION OF SYMBOLS 1 Supply pipe 2 Foam-containing liquid supply mechanism 3 Foam-containing liquid retention part 4, 4A Laminar flow formation tube 5, 5a, 5b Cylindrical tube 6 Inner layer 7, 7a, 7b Tubular layer flow-path mechanism 8 Gas-liquid separation discharge port DESCRIPTION OF SYMBOLS 9 Arc-shaped protrusion 10, 10a, 10b Diffusion board mechanism 11 Liquid collection | recovery storage tank 12 Opening part 13 Outlet 14 Base 15 Conical part 16 Concave-shaped conical receiving body 17 Fixing rod 18 Retaining ring 19, 19a Supporting rod 20 Butterfly screw 21 Stop g, g ₁ , g ₂ gap

Claims (8)

Foamed liquid pressurizing and supplying process for supplying foamed liquid under pressure, one to multi-layered ring rectifying process capable of thinly rectifying the foamed liquid supplied under pressure, and being transferred during the ring rectifying process A bubble expanding step of rectifying and pressurizing bubbles in the bubble-containing liquid and converging and expanding, a gas separation step of separating and discharging bubbles from the liquid by opening the throttle from the discharge port, and a radial separation of the liquid separated from the bubbles A degassing method for a foam-containing liquid, characterized by comprising a liquid diffusion step of expanding in an umbrella shape. A foam-containing liquid pressurizing and supplying mechanism for supplying foam-containing liquid under pressure;
A cylindrical laminar flow forming tube for introducing a bubble-containing liquid to be supplied under pressure, the laminar flow forming tube includes a cylindrical tube capable of forming an outer cylinder, and an inner layer formed at the center of the cylindrical tube. A tubular layer flow path mechanism of an annular tubular foam-containing liquid formed through one or more gaps and disposed therein;
A narrow gas-liquid separation outlet mechanism that squeezes the foam-containing liquid to the discharge side of the tubular layer flow path mechanism;
A diffusion plate mechanism for flowing down a liquid component obtained by exhausting and separating bubbles discharged by the mechanism;
A liquid recovery and storage tank mechanism for stationary recovery and storage of degassed liquid;
A degassing device for a foam-containing liquid, comprising:   The degassing device for a bubble-containing liquid according to claim 2, wherein a bubble-containing liquid reservoir for introducing and holding the bubble-containing liquid is provided in the introduction portion of the tubular layer flow path mechanism of the bubble-containing liquid.   The degassing device for a foam-containing liquid according to claim 2, wherein a single-layer or multi-layer flow path for the foam-containing liquid is formed in the gap between the bubble-containing liquid tubular layer flow path mechanisms. 3. The bubble-containing liquid deaeration device according to claim 2, wherein the gas- liquid separation discharge port mechanism is provided with an umbrella mechanism for flowing down the liquid from which the gas has been separated. The degassing device for a foam-containing liquid according to claim 2, wherein the gas-liquid separation / discharge port mechanism has a throttle configuration by expanding or reducing the diameter of either the cylindrical tube or the inner layer body. Tubular layer flow channel mechanism of bubble-containing liquid, a circular cross-section, oval, triangular, degasser of foamed liquid according to claim 2, characterized in that any one of the pentagonal shaped.   3. The degassing device for a foam-containing liquid according to claim 2, wherein the liquid recovery and storage tank mechanism is provided with a pressure reducing mechanism for sucking and exhausting the exhausted gas.

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