JPH0422832Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a blowing pipe used when, for example, corrosive liquid or the like is heated with steam.

[Conventional technology]

For example, one method for heating corrosive liquids such as plating liquid, acids, and alkalis is by directly blowing steam into them using a blowing pipe. Conventionally, in such heating methods,
A metal blowing tube was used, but when a metal blowing tube is used, even if the temperature is below the boiling point, the
The disadvantage was that noise and vibration were generated when the temperature exceeded ℃. Therefore, a plastic blowing tube has been developed to improve the drawbacks of the metal blowing tube. This plastic blowing tube is made by bundling a large number of small-diameter plastic tubes, fitting a sleeve onto one end of the bundle, and forming a honeycomb-like airtight joint by fusing. The structure is such that a spacer is provided to divide the liquid into several groups, and the plastic pipe is housed within a plastic pipe, with the other end immersed in liquid. In this case, steam passes through a plastic tube and is ejected into the liquid from its lower end while heating the liquid, with some of the steam condensing along the way, and the uncondensed steam being broken up into small pieces and flowing into the liquid. Since the plastic tube bundle is housed inside the plastic pipe, it is fixed at a predetermined position in the liquid tank, so it does not vibrate or float. I've learned not to do that.

[Problem that the invention attempts to solve]

However, in the case of the above-mentioned blowing tube, since the plastic tube bundle is housed in a straight plastic pipe, it not only requires many manufacturing steps and is large in size, but also has a structure in which the plastic tube bundle is housed in a straight plastic pipe. such as bending the part or the middle part, etc.
There is a problem in that the shape of the blowing pipe cannot be easily changed, and furthermore, it is troublesome to connect the pipe and the tube bundle, and it is difficult to downsize.

Therefore, this idea solves the above-mentioned problems of the conventional technology, does not generate vibration or noise, can be formed compactly and economically, and can be shaped freely depending on the situation inside the liquid tank if necessary. The purpose of the present invention is to provide a blowing pipe which can be formed to be deformed into shape and which is easy to assemble and install.

[Means to solve the purpose]

In order to achieve the above-mentioned object of this invention, according to this invention, a plurality of plastic tubes are bundled and one end thereof is integrally connected with a sleeve to form a honeycomb-like joint. a bundle of plastic tubes connected to a steam supply pipe at a joint portion and having the other end immersed in a liquid to be heated; a holding member for binding and holding the bundle of plastic tubes; and at least one plastic tube in the bundle of plastic tubes. and a shape-retaining rod inserted into the tube.

In this configuration, it is advantageous to use a rod made of a deformable metal because the plastic tube bundle can be bent and held in an optimal shape depending on the situation inside the liquid tank.

[Effect]

According to this invention, as described above, a plurality of plastic tubes are bundled, a honeycomb-like joint is formed at one end thereof, a predetermined part of the plastic tube bundle is tied and held, and at least one of the plastic tube bundles is held together. Since the rod is inserted into a single tube, the bundle of plastic tubes will not come apart and the tube will not come apart, even if it is not stored in a plastic pipe unlike the conventional blowing pipe that uses plastic tubes. The rod inserted therein ensures that the shape is maintained in a predetermined position within the liquid tank. in this case,
If a deformable metal such as lead is used as the rod inserted into the tube, the tube bundle can be easily bent and held in a desired shape. Therefore, it can be installed compactly, for example, by bending its tip or middle portion into an optimal shape depending on the situation inside the liquid tank. Furthermore, since there is no need for pipes or spacers for storing the plastic tube bundle, parts costs and assembly costs are also low.

〔Example〕

FIG. 1 is a partial vertical cross-sectional front view showing an embodiment of the blowing tube according to this invention. A plastic tube bundle 4, in which a sleeve 2 is fitted onto one end of the plastic tubes and the sleeve 2 is integrally connected to form a honeycomb-like joint 3, is a monofilament made of PFA as a holding member. It is tied in places by 5,
Each tube is designed to prevent it from falling apart. Here, the plastic tube bundle 4 consists of a large number of thin plastic tubes 4a through which steam passes.
and a plastic tube 4b that is thicker than the plastic tube 4a.The plastic tube 4b with a large diameter is arranged in the center of the plastic tube bundle 4, and these tubes 4a and 4b are connected to a sleeve 2 that is fitted around one end of the plastic tube 4b.
It is integrally fused with. A rod 6 made of a deformable metal such as lead is inserted into this large diameter plastic tube 4b, and both ends of the tube 4b are sealed, and the shape of the plastic tube bundle 4 is controlled by the rod 6. The configuration is such that it is maintained.

As shown in FIG. 2, this blowing pipe 1 is constructed by connecting a terminal joint 7 to a sleeve 2, further connecting a steam supply pipe (not shown) to this terminal joint 7, and connecting the other end of the plastic tube bundle 4 to the terminal joint 7. It is used by immersing it in the liquid in the liquid tank T. Since the plastic tubes 4a and 4b of this blowing pipe 1 are each made of a corrosion-resistant resin, it does not deteriorate even when immersed in a corrosive liquid, and has excellent durability. When the liquid is heated through a large number of plastic tubes 4a and discharged into the liquid from its lower end, a considerable amount of steam is heat exchanged and condensed on the way due to the large surface area of the plastic tube bundle 4. At the same time, since the uncondensed steam is finely divided and released into the liquid, it is possible to quietly heat the liquid to its boiling point without generating vibration or noise.

Furthermore, the plastic tube bundle 4 not only does not float up due to the metal rod inserted into the large diameter tube 4b at the center, but also prevents the plastic tube bundle 4 from floating up.
When the plastic tube bundle is made of plastic metal, the plastic tube bundle can be bent and held in any shape, and therefore can be freely deformed and used depending on the installation location.

According to this invention, compared to a blowing pipe that uses a conventional plastic tube, there is no need for a plastic pipe to hold the plastic tube bundle in a predetermined position, so it can be made more compact and does not necessarily require a spacer. Since the structure is simple, parts costs and assembly costs are also improved. Further, it is preferable to use a deformable metal rod, since the plastic tube bundle can be freely bent and held.

Note that it is possible to provide two or more rods 6 depending on the number of tubes in the plastic tube bundle 4, etc., and the material thereof does not necessarily have to be metal; for example, rods made of corrosion-resistant resin such as fluororesin can be used. Advantageously, its use eliminates the need to seal the end of the tube into which the rod is inserted.

[Effect of idea]

As explained above, according to this invention, a plurality of plastic tubes are bundled, a honeycomb-like joint is formed at one end of the plastic tubes, a predetermined portion of the plastic tube bundle is bound and held, and the plastic tube bundle is Since the blowing tube is made by inserting a rod into at least one tube of the tube, it is possible to quietly heat the liquid from room temperature to the boiling point of the liquid without generating vibration or noise. Compared to a tube bundle housed in a plastic pipe, the manufacturing cost is lower and it can be made more compact.

Furthermore, since it can be freely bent and held according to the situation inside the liquid tank, its practical effects are extremely large.

Note that this invention is not limited to the above-mentioned embodiments, and various modifications may be made within the technical concept of this invention, such as using a tightening ring instead of a monofilament as a means for binding and holding a bundle of plastic tubes. Changes are of course possible.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal sectional front view showing an embodiment of the blowing tube according to this invention, and FIG. 2 is an explanatory view showing its usage condition. 2...Sleeve, 3...Honeycomb joint, 4...
... Plastic tube bundle, 5 ... Holding member, 6
...Lotsud.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of plastic tubes are bundled together, one end of which is integrally connected to a sleeve to form a honeycomb joint, and the honeycomb joint is connected to a steam supply pipe. and a bundle of plastic tubes, the other end of which is immersed in the liquid to be heated;
A blowing tube comprising a holding member for binding and holding the plastic tube bundle, and a shape maintaining rod inserted into at least one plastic tube of the plastic tube bundle. (2) The blowing pipe according to claim 1 of the utility model registration, characterized in that the rod is made of a deformable metal.