JPS6034397Y2 - Solvent cleaning equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a solvent cleaning device.

As shown in Figures 1A and B, the conventional cleaning equipment using Triclean has a cleaning tank 1, Triclean 2,
An object cage 3 that accommodates objects to be processed 4, a transportation device 5 for the object cage, a water cooling coil 6 attached along the inner circumference of the upper part of the cleaning tank 1, and an opening surrounding the upper end of the cleaning tank 1 to supply Triclean vapor. an exhaust hood 7 for inhaling trichlene, a steam pipe 8 attached to the lower part of the cleaning tank 1 and heating the trichlene accumulated at the bottom of the cleaning tank, a solvent tank 9 for storing the trichlene, and a solvent tank 9.
It consists of a pump, etc., which sucks Triclean from a tank, pressurizes it, and injects it from a solvent injection gun 11.

To perform steam cleaning first with such a device, follow the procedure shown in Figure A.
As shown in the figure, when factory steam flows through the steam pipe 8 and heats the trichlene in the cleaning tank 1, the trichlene evaporates and the steam gradually rises to the position of the water cooling coil 6, turning the cleaning tank 1 into the trichlene. Since it is filled with steam, the processing object cage 3 containing the processing object is moved to the cleaning tank 1 using the transport device 5.
Insert into Triclean steam.

Then, since the temperature of the workpiece 4 is lower than the vapor temperature of the workpiece 4, the trickle vapor condenses on the surface of the workpiece 4, becomes a liquid, and flows over the surface of the workpiece 4, so the surface of the workpiece 4 It is possible to clean impurities such as oils and fats that are attached to the product.

At this time, the condensation action of the trichlene vapor continues until the temperature of the object to be treated rises to the same level as the temperature of the vapor of trichlene, so the temperature of the object to be treated, which has a small heat capacity, will rise in a short time and the condensation of the trichlene vapor will stop. , steam cleaning becomes impossible.

Therefore, depending on the contamination state of the material to be processed, there are cases where it is not possible to remove impurities with one steam cleaning. In this case, as shown in FIG. Take it outside, let it cool, and then repeat the process of steam cleaning several times.

In addition, for cleaning the inner surface of a slender object such as a pipe, as shown in FIG. Clean the inside surface.

However, such conventional solvent cleaning devices have the following drawbacks.

(1) When cleaning a workpiece whose surface is severely contaminated, it is necessary to remove the workpiece from the tank after steam cleaning, cool it, and perform steam cleaning again several times.
This causes harmful solvent gas to be scattered outside the tank, creating problems in terms of safety, hygiene, and pollution control.

(2) Since cooling is performed by air cooling, the time required is long and the overall work is long, resulting in poor efficiency.

(3) When cleaning the inner surface of a long and narrow object such as a pipe, it is difficult to supply a sufficient amount of solvent at a sufficient pressure to the inside, so a sufficient cleaning effect cannot be obtained.

Additionally, since this work is performed by the worker operating the spray nozzle at the top of the cleaning tank, there is a risk of inhaling harmful gases, and there is also a risk of the spray nozzle scattering harmful solvent mist and gas outside the tank. .

This invention was proposed in view of these circumstances, and aims to provide a safe, hygienic, and highly efficient solvent cleaning device. In a method for cleaning a workpiece by suspending and inserting a cage containing the workpiece into a cleaning tank equipped with a cooling pipe that cools and solidifies the solvent vapor, the cleaning tank has an open end extending upward. It has a lid plate that can be opened and closed, and an inlet opening attached to the upper end of the cage, and one end of which is to be communicated with a pipe joint to be described later, and the other end of which communicates with the open end of the material to be cleaned with a solvent. A pipe joint that is attached to the cleaning tank and is removably connected to the mouthpiece by an external operation to supply a solvent from the outside to the object to be treated through the mouthpiece. Features.

An embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a partial longitudinal sectional view thereof.

In the above figure, the same reference numerals as in FIGS. 1A and 1B indicate the same members as in FIGS. The top opening
A pair of lid plates 23 are attached to the upper end of the processing material cage 1 and are closed to each other horizontally by an air cylinder when the processing material cage 3 is suspended and inserted into the cleaning tank 1 using the transport device 5. A plurality of caps 24 each have a large-diameter inlet opening to be fitted into a pipe joint 24 to be described later at the upper end and a plurality of small-diameter outlet openings at the lower end to be communicated with the opening of the workpiece 4. A plurality of L-shaped bone joints are pivotally attached to the lower part of the large-diameter cylindrical portion 21 of the cleaning tank 1 and are connected to the bases 23 by being rotated by external operation, and reference numeral 25 denotes a triclean joint accumulated at the bottom of the cleaning tank 1. This is a solvent refining device that supplies 2 to the pipe joint 24 via a pump 26, and is comprised of a heating distillation section, a coagulation section, a water separation section, etc.

An exhaust chamber 27 surrounds the upper end opening of the large-diameter cylindrical portion 21 of the cleaning tank and sucks and exhausts solvent vapor.

According to such a device, in addition to achieving the effects described with reference to FIG. 1, the cover plate 22 is disposed at the upper end opening of the cleaning tank 1 and is quickly opened and closed by an air cylinder, so that when opening and closing, Triclean steam is released from the outside of the tank. It is possible to minimize the outflow to the

At this time, some trichlene vapor leaks out of the tank, but this is also collected in the exhaust chamber 27, so it does not leak outside.

Since the lid plate 22 has an airtight structure not only in itself but also at the joint with the upper end opening of the cleaning tank, the trichlene vapor in the tank will not leak to the outside even if the lid plate 22 is left in a closed state for a long time.

To perform steam cleaning, after closing the lid plate 22, factory steam is passed through the steam pipe 8 to evaporate the trichlene, and then water is passed through the water cooling coil 16 to solidify the trichlene vapor, which fills the tank. do.

In this state, the lid plate 22 is opened, and the object cage 3 into which the object 4 has been previously inserted is inserted into the Triclean steam in the tank via the transport device 5, and the lid plate 22 is closed to perform steam cleaning.

If a sufficient cleaning effect cannot be obtained with one steam cleaning, the ventilation of the steam pipe 8 is stopped and the object 4 to be treated is cooled by performing the liquid cleaning described later in the tank. The tube 8 is vented to perform steam cleaning.

To perform liquid cleaning, the pipe fitting 24 is rotated from the outside via an air cylinder (not shown) to fit it into the mouthpiece 23, and then the pump 26 is operated to suck and apply triclean from the solvent purifier 25. The liquid is pressed and sprayed onto the object 4 to perform liquid cleaning.

At this time, if the object to be treated is a long and narrow object such as a pipe, by communicating this with the small-diameter outlet opening of the mouthpiece 23, a trichloride with a pressure of 0.5 to 1 kg/cnl is generated inside the pipe more intensely than at the open end. Since it is sprayed out, a high cleaning effect can be obtained.

The ejected trichlene accumulates at the bottom of the cleaning tank 1, is purified by the solvent purifier 25 by the recovery pump 10, and is then reused.

In short, according to the present invention, there is provided a cage in which the object to be treated is housed in a cleaning tank, which is equipped with a steam heating tube built in the lower part to heat and evaporate the solvent, and a cooling tube built in the upper part to cool and solidify the solvent vapor. In a device that cleans objects to be processed by hanging and inserting the cleaning tank, the cleaning tank has a lid plate that can be opened and closed at the open end extending upward from the cleaning tank, and a lid plate that is attached to the upper end of the cage and that communicates with a pipe joint described below at one end. a mouthpiece having an outlet opening communicating with the open end of the material to be cleaned with a solvent at the other end; and a mouthpiece attached to the cleaning tank and removably connected to the mouthpiece by external operation. The present invention is industrially extremely useful because it is equipped with a pipe joint that supplies solvent from the outside to the object to be treated through the nozzle, thereby providing a safe, sanitary, and highly efficient solvent cleaning device. It is.

[Brief explanation of the drawing]

FIGS. 1A and 1B are partial vertical sectional side views showing the case where steam cleaning and liquid cleaning are performed using a known solvent cleaning device, respectively; FIGS.
The figure is a partially vertical side view showing an embodiment of the present invention. 1...Cleaning tank, 2...Triclean, 3
... Processing object cage, 4... Processing object,
5...Transportation device, 6...Water cooling coil,
Death...Steam pipe, 10...Pump, 21.
...Large diameter cylindrical part, 22... Lid plate, 23.
...Base, 24...Pipe joint, 25...
... Solvent purification device, 26 ... Pump, 27.
...Exhaust chamber.

Claims (1)

[Scope of utility model registration request] The cage to be treated is suspended and inserted into the cleaning tank, which is equipped with a steam heating tube built in the lower part to heat and evaporate the solvent, and a cooling tube built in the upper part to cool and solidify the solvent vapor. A device for cleaning objects, which has a lid plate that can be opened and closed at an open end extending upward from the cleaning tank, an artificial opening attached to the upper end of the cage and connected to a pipe joint to be described later at one end, and the other end. A base having an outlet opening that communicates with the open end of the material to be treated with a solvent is attached to the cleaning tank, and the base is removably connected to the base by an external operation. What is claimed is: 1. A solvent cleaning device characterized by comprising a pipe joint for supplying a solvent to an object to be treated.