JPS6239031B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a cleaning device for efficiently cleaning small molded parts made of rubber or plastic, such as various rubber plugs that require a high level of cleanability, or plastic joints for blood circuits. It is related to.

Traditionally, as a method for cleaning molded parts such as rubber stoppers that fit into the openings of medicinal bottles containing penicillin, vaccines, etc., a number of parts to be cleaned are placed in a cylinder containing cleaning liquid and the cylinder is directly rotated. , by rotating a stirring blade installed at the bottom of the cylinder, etc., the parts are made to flow together with the cleaning liquid in the cylinder, and after peeling off fine foreign matter that has adhered to the surface of the parts due to mutual contact between the parts, the cleaning water is removed. A method is used in which the waste is discharged from the cylinder along with foreign matter. However, although such cleaning methods can easily remove foreign matter that has adhered to the surface of the article, it is difficult to peel off and remove foreign matter that has adhered to the recesses of the part.
In addition, there are problems with cleaning effectiveness, such as detached foreign matter re-adhering to parts, and cleaning spots are likely to occur because it is difficult to flow the cleaning liquid inside the cylinder evenly, and parts are damaged due to friction between parts. There was a drawback. Furthermore, the devices used in conventional cleaning methods generally have a complicated structure, require troublesome operation, and have a disadvantage that the working environment is not very good.

The present inventors have arrived at the present invention as a result of intensive studies to eliminate the drawbacks of the above-mentioned cleaning device. That is, the present invention provides a rigid basket housed in a rigid cylindrical container having a cleaning liquid outlet in the upper side wall, a cleaning liquid inlet in the center of the bottom wall, and a lid for opening and closing the upper opening end, the basket being able to be opened and closed freely. It is formed of an upper lid, a cylindrical side wall with a large number of small holes, and a conical bottom wall, and a slit plate is attached to the top of the conical bottom wall to prevent articles from flowing out. A cleaning liquid inlet that engages with the cleaning liquid inlet of the cylindrical container is provided, and a guide cylinder whose upper and lower ends are enlarged in diameter in the shape of a flap is provided at the center of the interior of the basket, and a rigid inlet is provided from the cleaning liquid inlet of the rigid cylindrical container. The parts stored in the basket are sucked into the guide cylinder by the suction action of the cleaning liquid supplied into the guide cylinder through the cleaning liquid inlet of the mold basket, flow upward from the bottom of the guide cylinder, and collide with the top cover. This cleaning device is characterized in that it is configured to circulate the inside and outside of the guide cylinder by moving the cleaning device downward from outside the guide cylinder.

A feature of the apparatus of the present invention is that a liquid-permeable rigid basket containing the parts to be cleaned is housed in a rigid container, and the cleaning liquid is flowed into the container in one pass. This feature makes it possible to prevent detached foreign matter from re-adhering to the cleaned parts.

Furthermore, a guide cylinder whose upper and lower ends are enlarged in diameter is provided in the rigid basket, and cleaning liquid is supplied into the guide cylinder from the lower part of the rigid basket. Due to this feature, the parts to be cleaned are sucked into the guide cylinder by the suction action of the cleaning liquid rising inside the guide cylinder, and the parts are damaged by circulating the liquid inside and outside the guide cylinder with a strong liquid flow. This makes it possible to effectively remove foreign substances without causing any damage, and also enables uniform cleaning.

Next, one embodiment of the device of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of the apparatus of the present invention, which comprises a rigid closed container 1 and a liquid-permeable rigid basket 2 housed within the container.

The rigid container 1 has a cylindrical upper side wall 1a and a lower side wall 1b having a smaller diameter than the side wall, which are connected by a horizontal donut-shaped plate 1d, and a concave bottom wall 1c is connected to the lower side wall 1b.
is connected. A cleaning liquid outlet 12 is provided on the upper side wall 1a, and an overflow port 14 is provided above the cleaning liquid outlet. On the other hand, a cleaning liquid inlet 11 is provided in the center of the bottom wall 1c, and a liquid drain port 15 is provided near the cleaning liquid inlet. Cleaning liquid inlet 11
The tip of the protrusion protrudes into the inside of the bottom wall, and the tip of the protrusion connects to the cleaning liquid inlet 24 of the rigid basket 2, which will be described later.
The concave portion has a convex portion that engages with the concave portion in a liquid-tight manner. A hinged lid 13 is attached to the upper opening of the rigid container to seal the opening, and the lid 13 rotates around a shaft 17 as shown in the figure, and the air connected to the lid is rotated. The operation of the cylinder 16 automatically opens and closes the upper end opening of the container. 18 is the lid 13
This is the locking mechanism. 19 is a steam inlet connected to a steam jet pipe 33 for heating the cleaning liquid, and 20 is a cleaning liquid temperature detection end. The structure of the rigid container 1 can be appropriately designed into a high-pressure container, a chemical-resistant container, or the like by cleaning methods such as pressure cleaning, chemical cleaning, heating cleaning, and water cleaning. The rigid basket 2 is housed within the lower side wall 1b forming the rigid container 1, as shown in FIG.
The basket is formed of a cylindrical side wall 21 having an outer diameter large enough to have a gap with the inner wall of the lower side wall, and a conical bottom wall 22 connected to the side wall. A large number of small holes are drilled through the cleaning solution to prevent the parts to be washed out. Preferably, a retention prevention plate is provided at the connection portion between the side wall and the bottom wall to prevent retention of the objects to be cleaned. There are also two rigid baskets on the top of the side wall.
A hanger 2 with a hole for hoisting the basket to house it in the rigid container 1 or take it out of the container.
9, and a removable upper wall 23 is provided at the upper end opening of the side wall. A handle 26 is attached to the upper portion of the upper wall 23 so that the parts to be cleaned can be easily removed when being placed in or taken out of the basket. The tip of the cleaning liquid inlet 24 is provided at the top of the conical bottom wall 22 so as to protrude from the top. It has a recess that fluid-tightly engages with. A plurality of slit plates 30 are vertically provided at the cleaning liquid inlet of this recess to prevent parts to be cleaned from flowing out. Further, the bottom wall 22 is divided into upper and lower halves in order to take out the cleaned parts to the outside, and the lower part is constructed so that it can be opened and closed as appropriate by a lock mechanism 32. Furthermore, above the cleaning liquid inlet inside the rigid basket, a guide cylinder 25 whose upper end is enlarged in diameter in a flared shape is connected to a radial support plate 27 connected to the side wall, and is vertically provided inside the basket. . Further, a plurality of supports 28 are provided on the upper outer wall of the side wall 21 for fixing the rigid basket 2 inside the rigid container 1.
is configured to engage with the horizontal toroidal plate 1d of the rigid container.

Next, the mode of use of the device of the present invention will be explained. First, a lifting wire connected to the holed hanger 29 of the rigid container 2 is connected to a lifting device (not shown) attached to a rail running on the upper part of the rigid container 1, and the basket is suspended for cleaning. Place the required parts in the basket. In this case, it is preferable to store the parts in the basket with a lid on the upper part of the guide cylinder so that the parts do not enter the guide cylinder. When the parts have been placed in the basket, the upper wall 23 is attached to the upper part of the basket, and then the basket is run on the rails to the upper part of the rigid container and lowered into the interior of the rigid container in which cleaning liquid has been filled in advance. . After confirming that the recess at the tip of the cleaning liquid inlet 24 of the basket has engaged with the protrusion at the tip of the cleaning liquid inlet 11 of the rigid container, the wire connected to the lifting device is removed and the air cylinder 16 for opening and closing the lid is activated. Seal the rigid container.

Next, the cleaning liquid supply pump is operated to cause the cleaning liquid to flow into the guide tube 25 from the cleaning liquid inlet 11 of the rigid container through the cleaning liquid inlet 24 of the basket.
The cleaning liquid flowing into the guide cylinder at high speed uses the suction action of the guide cylinder to attract the parts at the bottom of the basket and rise inside the guide cylinder.During this time, the parts are exposed to a strong liquid flow, and foreign matter adhering to the parts surface is peeled off. Ru. The cleaning liquid containing the separated foreign matter is discharged to the outside through a cleaning liquid outlet 12 provided at the top of the container through a gap formed between the outer wall of the basket and the inner wall of the container through a large number of holes formed in the side wall of the basket.
On the other hand, the parts to be cleaned are the upper wall 23 of the basket.
After colliding with the guide tube 25 and the inner wall 2 of the basket,
It descends due to its own weight. When it descends to the bottom of the basket, it is sucked into the guide cylinder and circulates again in the same manner as described above. In the case of hot water cleaning, steam is introduced into the container through the steam inlet 19, and the steam is allowed to flow out through the steam jet holes formed in the annular steam jet pipe 33 to heat the cleaning liquid. The temperature of the cleaning liquid can be detected by a temperature sensor attached to the temperature detection end 20, and the amount of steam inflow can be adjusted.

When the cleaning for a predetermined period of time is finished, the cleaning liquid supply pump is stopped, the liquid drain port 15 is opened, and the cleaning liquid in the container is discharged, and the lid opening/closing cylinder 16 is operated to open the lid of the rigid container. A wire provided on the lifting device is connected to a hanger with a hole in the basket, and the basket is removed from the container. The baskets taken out from the containers are moved on rails and then carried out in the next process using a container similar to the one used in the cleaning process, such as a chemical cleaning process or a post-cleaning process. is removed from the container and transported to the parts removal position. At this point, the parts removal locking mechanism 32 of the basket can be opened to remove the cleaned parts.

It is preferable that the above-mentioned cleaning liquid is normally used in circulation. In this case, by providing a filter in the circulation flow path, clean cleaning liquid can always be supplied into the rigid container. Further, it is preferable to normally install two overheaters and switch between each one.

As described above, the present invention erects a guide cylinder whose upper and lower ends are enlarged in diameter in the shape of a flap, in a basket.
By supplying cleaning liquid to the bottom of the guide tube,
The article is circulated through the guide cylinder by the suction action of the cleaning liquid rising inside the guide cylinder, so it has an extremely simple structure and is easy to operate.
It has a high cleaning effect and is useful for cleaning parts that require a high degree of cleaning performance.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the device of the present invention, and FIG. 2 is a sectional view of a rigid basket. 1...Right container, 2...Right basket, 11
...Cleaning liquid inlet, 12...Cleaning liquid outlet, 13...
... Lid, 21 ... Side wall, 22 ... Bottom wall, 23 ... Top wall, 24 ... Cleaning liquid inlet, 25 ... Guide tube.

Claims (1)

[Claims] 1 A rigid basket 2 housed in a rigid cylindrical container 1 having a cleaning liquid outlet 12 on the upper side wall, a cleaning liquid inlet 11 at the center of the bottom wall, and a lid 13 for opening and closing the upper opening end, the basket being able to be opened and closed freely. A top lid 23 and a cylindrical side wall 2 with a large number of small holes.
1 and a conical bottom wall 22, a slit plate 30 for preventing articles from flowing out is attached to the top of the conical bottom wall, and a cleaning liquid flow that engages with the cleaning liquid inlet 11 of the rigid cylindrical container. An inlet 24 is provided, and a guide cylinder 25 whose upper and lower ends are enlarged in diameter is provided in the center of the interior of the basket.
The cleaning liquid supplied from 1 to the guide cylinder 25 through the cleaning liquid inlet 24 of the rigid basket is sucked into the guide cylinder, flows from the bottom to the top of the guide cylinder, collides with the upper lid 23, and is guided. A cleaning device characterized in that the cleaning device is configured to circulate inside and outside the guide cylinder by leading downward from the outside of the cylinder.