JPS60125202A - Condenser - Google Patents

Abstract

PURPOSE:To prevent a condensate from falling on a washed article from a ceiling, by raising the surface temp. of the ceiling of a steam washing tank, inclining the ceiling surface or constituting said ceiling surface from a non-condensible material. CONSTITUTION:The article 3 to be washed in the horizontal cylindrical steam washing tank 1 is washed by solvent vapor and vapor is condensed on a cooling surface 2 and recovered in a receiving tank 9 to be recirculated to and reused in the vapor washing tank. In order to prevent the condensate from falling to the article 3 to be washed from a ceiling 8, a heating means 10 is provided to the surface of the ceiling 8, the surface of the ceiling 8 is inclined or a member for constituting the ceiling 8 is constituted of a non-condensible material.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a condensing device with a novel structure, which recovers cleaning liquid without creating a cloud point on the surface of the object to be cleaned, especially in the drying process after steam cleaning the object to be cleaned, such as metal. Concerning a condensing device suitable for

Cleaning with an organic solvent or the like is carried out for the purpose of degreasing the surface of the object to be cleaned, such as metal, and removing stains such as metal abrasives.

Such solvent cleaning methods generally include immersing the object to be cleaned in a solvent, or spraying a solvent onto a metal surface, then steam cleaning the metal surface with solvent vapor, and then drying the surface. The cleaning operation is completed.

Conventionally, as the above-mentioned metal cleaning and drying equipment,
Generally, a steam cleaning tank having a structure as shown in FIG. 1 is used. That is, the steam cleaning tank 1 shown in FIG. 1 has a heater 5 at the bottom that heats the solvent 4. It has cooling surfaces 2 and 21 on the side wall 6, is open at the top, and has means for suspending and transporting the object 3 to be cleaned. The object to be cleaned 3 is the heater 5
After being washed in a heated solvent or in generated steam, it is transferred between cooling surfaces 2 and 21 and dried by K. The steam cleaning tank 1 has side walls 6 of the condensing surfaces 2 and 21 to the extent that solvent vapor does not scatter from the upper opening.
may be set to an appropriate length. However, when processing large objects with such conventional equipment,
Since the side wall on which the cooling surface is provided becomes long, there is a drawback that the device becomes larger. In addition, when configuring a series of processes in which cleaning with a solvent, drying, and cooling are performed continuously in a device with an open top structure as described above, it is difficult to horizontally transfer the object to be cleaned. This method not only complicates the means but also reduces the transfer speed.

Therefore, in recent years, cleaning with a solvent has been carried out while the object to be cleaned is transported horizontally by a conveyor or the like in a device such as a cylindrical body with a ceiling above.

A method of continuously performing drying and cooling has been proposed. However, in an apparatus having such a ceiling, the object to be cleaned, such as metal, has the disadvantage that color spots remain on its surface. The present inventors came to propose the present invention after discovering that the cause of the above-mentioned color spots on the metal surface is the condensed solvent that falls from the ceiling inside the device.

That is, the present invention provides a condensing device with a structure that prevents condensate from falling from the ceiling.

Hereinafter, the present invention will be explained in detail based on the drawings.

The condensing device of the present invention generally has a condensing region having a horizontal hollow cylindrical ceiling structure, and when a means for transferring the object to be cleaned from one end to the other end, such as a conveyor, is connected to the cleaning process, K. Since the process from washing to drying is linear (horizontal), the equipment and operation are extremely simplified. Furthermore, since the condensing device is not open to the atmosphere, it only needs to have the minimum necessary size to accommodate the object to be cleaned.

A side view showing the basic shape of the device of the present invention described above is shown in the second figure.
Shown in the figure. That is, the apparatus shown in FIG. 2 is a horizontal cylindrical body with both ends open, and an evaporation zone for easily volatile liquid is provided in the middle of the cylindrical body, and a condensation zone is provided at the end. It has a means 7 for transferring the object 3 to be cleaned from one end to the other end, and has a structure in which a cooling surface 2 is provided only on at least a portion of the side or bottom surface (both surfaces in FIG. 2). Of course, a condensate receiving tank 9 is attached to the bottom. The condensate in the receiving tank is circulated to the steam cleaning tank and reused.

The material of the cylindrical body used in the above device is a solvent-resistant material.
For example, metals and plastics are used. Also,
The size of the cylindrical body is appropriately selected depending on the shape of the object 3 to be cleaned and the size of the means 7 for moving the object 3 to be cleaned. The moving means 7 is generally a belt conveyor.

Conveyors such as a net conveyor, coil conveyor, chain conveyor, etc. are used.

The mounting position of the cooling surface 2 provided in the condensing device of the present invention is at least a part or all of the side surface or bottom surface of the cylindrical body, and when it is provided on the ceiling 8 surface, the condensed liquid is attached to the object to be cleaned. 3. Therefore, the purpose of the present invention □ cannot be achieved. The cooling surface 2 is attached by inserting a tube into the side or bottom of the cylindrical body, and circulating water or a refrigerant through the tube. The cooling capacity at this time may be appropriately determined depending on the type of solvent used, the size of the object to be cleaned, the desired processing time, etc.

The apparatus of the present invention is characterized by a structure that prevents condensate from falling from the ceiling 8 onto the object to be cleaned.

As a means for achieving the above structure, for example, the temperature of the ceiling surface 8 is made higher than the temperature of the side surfaces or the bottom surface. Specifically, typical methods include maintaining the temperature of the ceiling 8 surface higher than the condensation temperature of the solvent vapor, or changing the structure of the ceiling 8 to prevent condensed liquid from falling onto the object to be cleaned.

As a method of keeping the temperature of the ceiling 8 higher than the condensation temperature of the solvent vapor used, for example, as shown in Figure 3, the ceiling 8
A method of attaching a heating means 10 such as a surface heater, a method of filling the ceiling surface with a heat insulating agent, etc. are used. In this case, the temperature control of the eight ceiling surfaces is appropriately selected depending on the type of solvent, the shape of the apparatus, etc.

In addition, as a method to prevent the condensate from falling onto the object to be cleaned 3 by changing the shape of the ceiling 8, it is possible to slope the surface of the ceiling 8 so that the condensate generated on the ceiling 8 drips to the side surface. There is a method of directing the condensate to a receiving tank. The shape of the ceiling 8 at this time is not particularly limited, such as a triangular shape as shown in FIG. 4 or a dome shape. Further, the angle of inclination at this time may be selected to be the minimum necessary range in which the condensate does not fall onto the object to be cleaned, depending on the capacity of the condensing device, the shape of the object to be cleaned, the distance between the object to be cleaned and the side wall, etc. Further, the effect is further enhanced by cutting grooves in the above-mentioned sloped ceiling surface.

In addition, there are no particular limitations on the method of constructing the members constituting the ceiling 8 using non-condensable materials.

As the solvent used in the apparatus of the present invention, organic solvents such as ether, alcohol, methylene chloride chloride ethane, trichloroethane, trichlorethylene, and percool ethylene are preferably used. It may be selected appropriately depending on the type, etc.

Further, the device of the present invention is a horizontal cylindrical body with the general KFJ4 end open, and the evaporation zone of the easily volatile liquid is obstructed in the middle part of the cylindrical body, and the condensation zone of the present invention is connected to the evaporation zone. It is provided at the end of the cylindrical body as shown in FIG. At this time, the evaporation area of the present invention i is a part for drying the object to be cleaned.

In addition, although the above explanation has mainly focused on the superiority of the apparatus of the present invention for cleaning metals, it goes without saying that the present invention can be applied to all apparatuses based on the same principle other than for cleaning metals.

[Brief explanation of drawings]

Figure 1 is a schematic diagram showing a conventional condensing device, and Figure 2 is a schematic diagram showing a conventional condensing device.
3 and 4 are side views showing an embodiment of the condensing device of the present invention. In the figure, 1 is a steam cleaning tank, 2 is a cooling surface, 3 is an object to be cleaned, 4 is a solvent, 5 and 1'O are heating means, and 6 is a cap L7
is a conveyor, 8 is a ceiling, and 9 is a receiving tank. Patent applicant: Tokuyama Soda Co., Ltd. Figure 1 Confucianism 21-8 Figure 4 Figure 3

Claims (1)

[Claims] (1) A condensing device having a structure that prevents condensate from falling from the ceiling. (2) A ceiling having a horizontal hollow cylindrical condensation region and a structure that prevents condensate from falling in the condensation region. ``Condensing device (3) according to claim 1.'' A condensing device (4) according to claim 1, characterized in that the temperature of at least a part of the side surface or the bottom surface is lower than that of the ceiling surface. Alternatively, the cooling surface is provided only on at least a part of the bottom surface.
The condensing device (5) according to claim 1 is a sloping ceiling The condensing device (6) according to claim 1 is a horizontal cylindrical body with both ends open, and the middle part of the cylindrical body has an easily volatile material. The condensing device (7) according to claim 2, wherein a liquid evaporation zone is provided and a condensation zone is provided at an end of the condensing device (7). The condensing device (8) according to claim 2, which has means for transporting the object to be cleaned; and the condensing device according to claim 1, wherein the condensate is an organic solvent.