JPS58501710A - foam generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Foam generation equipment Background technology Water treatment processes in the textile industry are recognized as a major source of energy consumption.

With the emergence of rising energy costs and growing interest in the effective use of oil and natural gas, For example, water treatment technology for bleaching, dyeing, printing, and finishing can be Considerable consideration has been given to reducing the use of

One of the technologies developed as a result of energy conservation research in the textile field is water treatment. There are uses of foam for physical processes. The total amount of liquid supply to the textile field by foam technology is , thereby reducing the total amount of energy required to dry the product. ing. In addition to energy savings, foam also provides increased productivity and various other benefits. It brings points.

The most important considerations according to foam technology are e.g. density, viscosity, stability and bubble size. The aim is to produce foam with uniform properties. The diversity of physical properties of bubbles is of great interest to observers. Such uniformity is important for foams, as it would produce results that are not easily discernible. This is especially important when dyeing.

One type of foam generator includes the so-called "static foam generator". There is something called J. Such a device uses air and liquid The sapon solution is passed through a porous medium such as beads, screens and the like. Based on the principle that small bubble dispersion (i.e., bubbles) can be generated when It will be operated.

Static foam generators are known. For example, on August 24, 1937, Walter U.S. Patent No. 2.09 granted to Walther Gosmann In No. 0.727, a liquid and a gas pass through a large number of balls of non-corrosive material such as glass. The well-mixed liquid and gas mixture is sent under pressure to the chamber containing the gas. An apparatus is disclosed for producing foam consisting of small air bubbles.

Additionally, a patent has been disclosed in which a liquid-gas mixture passes through a spherical bead and forms bubbles. An example of such a device is the one published by Hans Wilsen on July 26, 1977. IIWi1m@en) and U.S. Pat. On November 6, 977, Hans Ulrich von der Eltz (Hang-Ul) U.S. Patent No. 4,061, issued to Rich von der Eltz There are No. 001 and others.

Known static foam generators in which a mixture of liquid and gas passes through something like a screen As an example, on June 10, 1980, Howard Dapulcole, J.N. U.S. Patent No. 4, 207.202, issued to Ward W. Col. There is a number. In this patent, an expanded piece of metal collects a supplied liquid and gas. It acts as a porous material that mixes and forms bubbles.

While the concept of static foam generators employing a bed of porous material is known, this invention It provides a mixture of liquid and air that improves the level of uniformity. Acknowledgment of this improvement The knowledge is to consider the inclusion factor problem when generating foam using a static foam generator. can be obtained by

Basically, the combination of gas and liquid (water), which generates bubbles, is a heterogeneous system. liquid The addition of surfactants to the body only serves to stabilize the gas phase in the liquid phase as air bubbles. There is no certainty that the gas/liquid ratio will remain constant during foam dispersion. therefore Foam uniformity depends on the proper flow motion of the gas/liquid mixture as it passes through the foam generator. This requires flow dynamics characteristics.

This invention controls the flow of air and liquid so that a sufficiently uniform foam is produced. They form a structural device that leads to the device.

Summary of the invention In implementing this improved foam generation technique, air and liquid are pre-mixed and The mixture is sent through a static foam generator to generate foam. Premixer and foam generator It has a similar structure. In particular, each has a large number placed within the casing. It consists of a cylindrical casing enclosing a convoluted element. In the foam generator, the casing The ring further includes a spherical bead filling the space between the convoluted element and the casing. Foam generators differ from silimixers in that they include a porous bed.

In the device just described, the grimixer continuously and predictably mixes air and liquid. Mix. In the introduction of this mixture into a static generator, convoluted elements and spherical shapes The combined effect of the bead is to break up the developing foam stream and also to mix it radially. This prevents air-liquid concentration gradients across the diameter of the bubble. As a result, The foam has a high liquid-to-air ratio (often called the "blow ratio"). It produces a foam of excellent uniformity even when mixed.

Detailed description of the invention The present invention will be described in detail with reference to the accompanying drawings.

here, FIG. 1 is a schematic diagram illustrating the basic configuration of a foam generating device according to the present invention, FIG. 2 shows the structure of this device shown in FIG. A partial cross-sectional view of the remixer section. 1 and 3 are cross-sectional views of the static foam generator of the apparatus shown in FIG.

Referring to attached Figure 1, the source of liquid under pressure is a liquid (mixture of water and surfactant). of! It is shown as a pump 10 feeding a remixer 12. The pressurized air is The liquid is supplied to the side facing the liquid flow path just before the upstream side of the gasket by a suitable communication part.

Air/Liquid! flows through remixer J2 and then directly connected to a suitable coupler. is supplied to the static foam generator 14 via the static foam generator 14. In the foam generator 14, this mixture is further Mixing results in the release of foam for feeding into a suitable foam applicator (not shown).

Details of premixer 12 can be understood with reference to FIG. Premixer 1 2 is a division of Cheminil Corporation of Diton, Ohio. Kenics Corporation + a division of C by hemineer + Inc, of Dayton + 0hio) It is a commercially useful device known as the KEX KMOD-60.

The IJ mixer 12 is a cylindrical casing with threaded screws on both ends. 16, and the liquid/air supply is made at the connection part. Inside the casing 16 A large number of convoluted elements 18 are provided. Each convoluted element 18 has a 180 degree angle. It consists of a rectangular piece of metal with a rib attached to it. The convoluted element 18 is formed of the casing 16. It extends along the -TjL line along the longitudinal axis and is arranged end to end. Ru. The adjacent ends of the convoluted element 18 are 90 degrees apart from each other, as can be seen from FIG. oriented in different directions.

Premixers of this type described above mix air and liquid in a continuous, predetermined flow. Convoluted corner Element 18 is a uniform stationary special costume Sho 58-501710 (,3) This steady flow (uniform flow) low) prevents waves or vibrations from the feed components.

This feed component is mixed in other types of silimixers, especially from IJ mixers. causing a change in the uniformity of air/liquid mixing as it occurs along the direction of flow. Ru.

An additional feature of the current premixer 12 is that the grimixer is a premixer other than the premixer. The nozzle effect formed on the seed, that is, the freedom of not having anything like a deflector It is a free flow system. Air/liquid flow is therefore minimized It occurs over a wide range due to pressure.

The static foam generator 14 is the same as the premixer 12 in brewing. foam generator The fourteen casings 20 have a larger diameter than the casing 16. Don't add an attachment casing 20 has adapters 26 and 28 on opposite ends of casing 20. A flange 22 is provided at both ends which preferably cooperates with a flange 24 provided with. There is. However, the most important difference between premixer 12 and foam generator 14 is , the foam generator 14 is spherical and occupies the space between the convoluted element 32 and the casing 20. It further includes a porous bed of beads 30. Preferably these The bead 30 has a diameter of approximately 1.4 vm. Beads 30 are placed inside the foam generator 14. The screen 34 has flanges 2 at opposite ends of the casing 20 in order to retain it. 2 and 23.

Bead JO refers to the air supplied to the foam generator 14 in the direction along the longitudinal length of the foam generator 14. It has pores that generate bubbles from the gas/liquid mixture. The convoluted mixing element 32 This creates a rotating circulation that develops bubbles around the hydraulic center of the element 30, thus emitting radiation. This causes a mixture of substances. This mixed type is essentially joined to the center of the casing 2o. air/liquid gradient between the object and its part close to the inner wall of the casing 2o is hindering. The disclosed foam generator has a number of divided flows equal to 2r'', where n is used This works according to the formula that the number of elements used is 16. bring about

Utilizing this device as described above, uniform, predetermined and reproducible density, viscosity, stability and Characteristics of bubble size and bubble size are suppressed.

Submission of Translation of Written Amendment (Article 184-7, Paragraph 1 of the Patent Law) 13 Wa 1 Today, May 1, 2013 Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1 International dispatch number PCT/US82101472 2. Name of the invention 3 Patent applicant Address: 31833 West Point West, Gionoa, United States Temp Street 400 Nationalities United States 4th generation manager Address: 17th Mori Building, 1-26-5 Toranomon, Minato-ku, Tokyo Amended scope of claims 1. A large number of convolutions arranged end to end and extending in the longitudinal direction of the casing. enclosing a first cylindrical casing having shaped elements to produce a mixture of air and liquid; A silimixer, fixed and extending along the length of the casing end-to-end at different angles a second cylindrical case having a further number of convoluted elements arranged therein; a spherical piece occupying a space between the convoluted element and the casing; a static foam generator including a bed of foam, and producing a uniform distribution of air and liquid discharged from the opposite end of said second casing; said admixture to a foam generator as a passage through said bead to means for coupling a silimixer to one end of a second casing, wherein said dispersion is foamed; Measurable physical properties of density, stability, viscosity and continuously uniform bubble size distribution Improved foam generator characterized by characteristics 2 The air and liquid are The said "limit" in the direction of flow extending along the longitudinal direction of the premixer casing. A foam generating device according to claim 1, which is supplied to one end of a kisser casing.

3. Each convoluted element consists of a rectangular body twisted by approximately 180 degrees, and its proximity Claims 1 and 2, wherein the two ends are oriented at different angles to each other. The foam generator according to any one of the above.

4. The claim that adjacent ends of the rectangular body are oriented at 90 degrees to each other. The foam generating device according to item 3.

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Claims (1)

[Claims] 1. A large number of turns are arranged end to end and extend in the longitudinal direction of the casing. Wrapping a first cylindrical casing with a spiral element to create a mixture of air and liquid A premixer to A further large number of turns are arranged end to end and extend in the longitudinal direction of the casing. a second cylindrical casing in which a convoluted element is arranged; a static foam generator comprising a bed of spherical beads occupying a space between the casing and the casing; as well as, producing a uniform distribution of air and liquid discharged from the opposite end of said second casing; said admixture to a foam generator as a passage through said bead to An improved foam consisting of a means for coupling the hep IJ mixer at one end of the second casing. Generator. 2 The air and liquid extend along the longitudinal direction of the premixer casing. Claim 1 The foam generating device described in Section. 3. Each convoluted element consists of a rectangular body twisted by approximately 180 degrees, and its adjacent Claims 1 and 2, wherein the two ends are oriented at different angles to each other. The foam generator according to any one of the above. 4. Claim 3, wherein the adjacent ends are oriented at approximately 90 degrees to each other. The foam generator described.