JPS5821558B2 - Distillation equipment for dirty cleaning liquid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for distilling a polluted cleaning liquid.There have been various types of apparatuses of this type in the past, but conventional products generally use electric heaters, gas heaters, etc. Since a heating means is used, the fuel consumption is high, and a safety device is required to prevent the solvent from catching fire, making the distillation cost of the polluted cleaning liquid expensive.

In addition, in order to eliminate this disadvantage in terms of cost, there are methods that attempt to distill seawater etc. using solar heat.
JP-A No. 48-86781, etc., existed, but this method involves returning heated liquid from a storage tank filled with seawater through a heat collecting part to the storage tank, and repeating this reflux for a long time until the seawater in the storage tank reaches a high temperature. The generation of steam and distillation work only started when the temperature was reached, and the work efficiency was extremely poor.

The present invention eliminates the above-mentioned drawbacks and enables safe and inexpensive distillation of a polluted cleaning solution. The pipe is tilted and polluted; it is connected to the introduction chamber of the cleaning liquid in the lower end direction, and one end of the outlet pipe is connected only to the opening provided in the upper direction of the heat collecting part without being connected to this introduction chamber. The other end of this outlet pipe is connected to a condensate of evaporated steam, and the other end of a cooling pipe is connected to this condensate, one end of which is connected to a cooling source and which introduces cold air. The cleaning liquid is not returned to the introduction chamber (it evaporates in a short time only by heating in the heat collection chamber, and the evaporated vapor is passed through an outlet pipe that is not connected to the introduction chamber but only to the heat collection section). Since the distillate is guided into the condensate and condensed, it enables efficient distillation work.

An example of this will be explained below with reference to the drawings. Reference numeral 1 denotes a pedestal whose lower end is supported by supporting legs 2, which is inclined from one end to the other, and has a main body structure 3 placed and fixed on its upper surface. ing.

Reference numeral 4 denotes an inlet ψ for introducing the dirty cleaning liquid 5 formed in the upper part of the main body structure 3. The entire outer periphery is covered with a heat insulating wall 6 made of a heat insulating material, and an inlet for the dirty cleaning liquid 5 is provided at the upper end via a valve 7. 8, and a liquid level gauge 9 is installed in the vertical direction inside.

Reference numeral 11 denotes a connecting pipe whose upper end is connected to the lower end of the introduction chamber 4 and which is formed along the inclination direction of the pedestal 1. The outer peripheral surface is covered with a heat insulating wall 6, and at the lower end, a sampling valve 12 for removing dirt is formed. ing.

Reference numeral 13 denotes a heat collecting part whose lower end is connected to the connecting pipe 11 to communicate with the introduction chamber 4 via the connecting pipe 11. It is bent into a wave shape and made of a material such as copper or stainless steel with good heat conduction to make the light receiving area uniform. One end of a discharge pipe 16 which covers the upper surface of a heat collecting plate 14 made of a material, and whose lower surface is covered with a heat insulating wall 6, and which discharges evaporated steam to an opening 15 in the upper end direction that does not come into direct contact with the polluted cleaning liquid 5. are connected.

A condenser 17 connects the other end of this outlet pipe 16 and introduces evaporated steam, which passes through a number of cooling pipes 21 from the lower end wall 19 to the upper end wall 20 of the sealed condensing chamber 18. The lower end is connected to a cooling source 23 such as a low-temperature part underground or a cooling liquid, and the cold air from the cooling source 23 is transmitted to the condensing chamber 18 through a cooling pipe 21 made of a material with good thermal conductivity.

Numeral 24 is a suction thread that sucks cold water from the cooling source 23 such as a cooling liquid underground by capillary action, and a plurality of stainless steel wires, copper wires, etc. are bundled in parallel to act as a capillary between each contact part.

Reference numeral 25 denotes an outlet provided at the lower end of the condensing chamber 18, through which the regenerated cleaning liquid is taken out.

Reference numeral 26 denotes a transparent plate that covers the upper surface of the heat collecting section 13, and prevents air flow on the upper surface of the heat collecting plate 14 and prevents heat loss accompanying this air flow.

In the configuration as described above, the heat collecting section 13 is installed at a location exposed to sunlight, the condensate 17 is located at a location where the influence of solar heat is small, and the lower end of the cooling pipe 21 is inserted into the cooling source 23. do.

Next, the dirty cleaning liquid 5 used for the cleaning operation is supplied from the inlet 8 of the introduction chamber 4, and the dirty cleaning liquid 5 is filled into the heat collecting part 13 from the lower end direction through the connecting pipe 11.

When the heat collection part 13 is heated by solar heat in this state, the heated dirty cleaning liquid 5 rises toward the mouth part 15 and evaporates, and this evaporated steam is led to the condensate 17 via the outlet pipe 16 and cooled. It is then condensed and becomes a regenerated liquid.

If the polluted cleaning liquid 5 in the heat collecting section 13 decreases due to this evaporation, it will be automatically replenished from the introduction chamber 4 connected by the connecting pipe 11, so if the introduction chamber 4 is made large, distillation work can be carried out continuously for a long time. It can be carried out.

Furthermore, since the introduction chamber 4 and the heat collecting section 13 are connected at their lower ends, the heated dirty cleaning liquid 5 does not flow in the direction of the introduction chamber 4 (evaporation work with excellent thermal efficiency can be performed).

Chips, oil, and other contaminants mixed in the dirty cleaning liquid 5 can be moved along the slope toward the lower end of the connecting pipe 11 and the heat collecting section 13, and can be optionally extracted from the extraction valve 12.

As described above, the present invention heats the polluted cleaning solution by heating the heat collecting part with solar heat, so it does not require expensive heating means such as electricity or gas and can be operated effectively using natural energy. It is cost-free, and there is no need to take into account the flammability of the solvent that accompanies heating, as is the case with electricity, gas, etc. (the device can be simplified).

In addition, since the heat collecting section is connected to the introduction chamber, the contaminated cleaning solution reduced by heating and evaporation can be automatically replenished from the introduction chamber, increasing the capacity of the introduction chamber (this makes it possible to work in black areas continuously for a long time). As a result, it is possible to distill a large amount of polluted cleaning liquid without requiring any effort.

In addition, the polluted cleaning liquid heated in the heat collecting section by solar heat is not returned to the introduction chamber (it evaporates in a short time due to heating only by the heat collecting section, and is not connected to the introduction chamber but only in the heat collecting section). Since the evaporated vapor is led to the condensate via the connected outlet pipe and condensed, efficient distillation work is possible.

In addition, the other end of the outlet pipe is connected to the evaporated vapor condensate,
Since one end of the cooling pipe is connected to the cooling source and the other end is connected to the cooling pipe that introduces cold air, it not only improves the cooling and condensation effect of the condensate (but also connects the cooling pipe to a low-temperature part underground, etc.). For example, it is possible to obtain a cooling effect economically.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 16 is a sectional view, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. 4...Introduction chamber, 5...Dirty cleaning solution, 1
3... Heat collection part, 15... Mouth part, 16.
...Derivation pipe, 17...Condensate.

Claims (1)

[Claims] 1. A heat collecting part made of a material with good thermal conductivity and heated by solar heat is tilted at an appropriate angle and is connected to the introduction chamber for the pollutant cleaning liquid at the lower end, and is not connected to this introduction chamber but is collected. One end of the outlet pipe is connected only to the opening provided in the upper direction of the hot section, and the other end of this outlet pipe is connected in communication with the condensate of evaporated steam, and one end is connected to the cooling source to the condensate to supply cold air. A distillation device for a polluted cleaning liquid, characterized in that the other end of a cooling pipe for introducing the water is connected to the other end of the cooling pipe.