JPS6054276B2 - Impregnation equipment with 3 continuous impregnation tanks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises three impregnating tanks for accommodating objects to be treated,
This impregnation tank relates to an impregnation device with three continuous impregnation tanks whose bottoms are connected through a communication pipe to alternately move impregnating liquid and washing water.

Generally, as a secondary treatment for porous sintered bodies or structures having pinholes, impregnation treatment involves impregnating the gap with an impregnating liquid to improve its airtightness.
Conventionally, an impregnating apparatus as shown in FIG. 4 has been used.

A is an impregnating tank for storing the products to be processed, and a sealed door c is attached to the upper opening of the impregnating tank so that it can be opened and closed laterally by a vertical axis d, and a vacuum pump e and an air compressor are mounted on the top of the sealed door. The impregnating tank f is connected via an on-off valve g, and has a main valve i, and a storage tank for impregnating liquid j is connected to the bottom of the impregnating tank a via an on-off valve 1. m is a washing tank disposed near the impregnating tank a. The impregnating device uses a vacuum pump e to exhaust residual air, etc. in an impregnating tank a containing the product to be processed, creates a vacuum in the tank, opens an on-off valve 1, and sucks out a predetermined amount of impregnating liquid j. Then, the article to be treated is immersed or immersed and pressurized.

After a predetermined time according to the settings of the control system, the on-off valve 1 is opened and the impregnating liquid j is returned to the storage tank by the air compressor f.
In some cases, the impregnating process is completed by taking the product to be treated (including the product) out of the soaking tank a, but between the completion of the reduction of the impregnating liquid j and the start of the next impregnation, the impregnating liquid j is kept inside the storage tank. As the exhaust system, control system, and piping system are stopped, this accumulates as idle time in the impregnation process, as well as the troublesome labor and time required to transport the processed products from the 5th impregnation process to the washing process. This method has disadvantages in that productivity is low because it requires a lot of water, and it is not possible to automatically replenish the impregnating liquid that is consumed. The present invention has been made in view of these drawbacks, and in the first invention, three impregnation tanks are provided for accommodating the products to be treated, and each of the impregnation tanks has a sealed door attached to the upper end thereof so as to be able to be opened and closed. At the same time, a communication pipe connecting the bottom of each impregnation tank is connected via opening and closing, and each impregnation tank can sequentially store impregnating liquid and washing water. A compressor is connected via an on-off valve, and in the second invention, a communication pipe communicating the bottom of each impregnation tank,
To provide an impregnating device with three consecutive impregnating tanks, in which an auxiliary tank for automatically replenishing used impregnating liquid is connected via an on-off valve, and each impregnating tank is operated in sequence to shorten downtime and transport time. , the purpose is to eliminate the conventional drawbacks.

Hereinafter, the present invention will be explained based on examples of illumination surfaces.
Example 1 This example uses 1, 2, and 3 as shown in Figures 1 and 2.
are a first impregnation tank, a second impregnation tank, and a third impregnation tank, which are arranged vertically in parallel, respectively.

Each of the impregnating tanks has hermetic doors 4, 5 and 6 attached to the opening at the upper end so as to be able to be opened and closed horizontally or vertically by means of hinges 7, 8 and 9.
A communication pipe 13 that communicates the bottom of each impregnation tank 1, 2, and 3 is connected via communication pipe valves 14, 15, and 16, and allows charging and removal of impregnation tanks 1, 11, and 12. Tanks 1, 2, and 3 are an impregnation tank 17 and a washing water 1
8 can be stored in J order. Further, a vacuum pump 19 and an air compressor 20 are connected to the upper part of each of the impregnating tanks 1, 2, and 3 through vacuum piping 27 via vacuum on-off valves 21, 22, 23 and compressed air on-off valves 24, 25, 26, respectively.
and is connected by a compressed air pipe 28.

29 and 30 are main valves of the vacuum pump 19 and air compressor 20, respectively; 31, 32, and 33 are breathing valves for releasing the pressure or vacuum in each impregnating tank; 34, 35
, 36 is a stirring means 4 such as an air jet, and the stirring means is connected to the compressed air pipe 28 by a conduit or the like (not shown).

In the above structure, the vacuum pump 19 and the air compressor 20 are driven in advance, and the main valves 29 and 30 are opened.

Now, the third impregnating tank 3 is in an immersed or immersed pressurized state, and the impregnating liquid 17 is stored in the third impregnating tank, and the washing water 18 is stored in the second impregnating tank 2. When the process is in progress, the closed door 4 of the first impregnation tank 1
The charging operation of opening the impregnation tank and charging the workpiece 10 into the impregnation tank is completed in one step. Next, after closing the airtight door 4 and tightening it with a sealing device (not shown), the vacuum opening/closing valve 21 is opened to discharge the remaining air inside the first impregnating tank 1 into the first impregnating tank. is evacuated and the vacuum on-off valve 21 is closed. Next, the on-off valves 14 and 16 are opened, and the breathing valve 33 of the third impregnation tank 3 is opened, and the entire amount of the impregnating liquid 17 in the third impregnation tank is sucked into the first impregnation tank 1 in 5 minutes, and the on-off valve 14 is opened. After closing, the product 10 to be treated is immersed in powder, or the compressed air on/off valve 24 is opened and compressed air is introduced to immerse and pressurize at a predetermined pressure.

The internal pressure of the third impregnating tank 3 can be adjusted by opening the breathing valve 33 to suck in air equivalent to the reduced volume determined by the transfer of the impregnating liquid 17, or by sucking in the remaining compressed air after the immersion pressurization in the previous step. By expanding as the liquid level falls, a normal pressure state is achieved. At the same time as the transfer of the impregnating liquid 17 to the first impregnating tank 1 is completed, the on-off valve 15 and the compressed air on-off valve 25 are opened.
The washing water 18 in the impregnating tank 2 is completely pumped to the third impregnating tank 3 in 5 minutes, and the on-off valve 15 and the compressed air on-off valve 25 are closed, and the stirring means 36 is used to wash the inside of the third impregnating tank 3. The water 18 is stirred and washing of the article 12 to be treated is started.

At the same time as the washing of the product 12 to be processed starts, the sealed door 5 of the second impregnating tank 2 is opened, and the product 11 to be processed that has been washed with water is taken out from the second impregnation tank, and the product to be processed for the next process is delivered. After completing the process in one go, the vacuum on-off valve 22 is opened and the inside of the second impregnating tank is evacuated in the same manner as in the first impregnating tank 1, and then the impregnating liquid is sucked, immersed or soaked. Proceed to the impregnation process using pressure. In addition, the water washing process of the processed product 12 in the third impregnating tank 3 is completed in three washes, and the end point coincides with the completion of transfer of the impregnating liquid 17 from the first impregnating tank 1 to the second impregnating tank 2. After that, each step is repeated in the same manner as in both impregnating tanks 1 and 2.

That is, as shown in FIG. 2, by staggering and combining the steps of each impregnation tank 1, 2, and 3, the impregnation treatment after water washing is performed three times in 105 minutes. Example 2 This example is a case in which an auxiliary tank that is common to three impregnating tanks is attached.

As shown in FIG. 3, an auxiliary tank 37 is connected to the middle part of the communication pipe 13 of the first embodiment by a conduit 39 via an on-off valve 38, and the impregnating liquid 17 is reduced in loss by consumption due to the impregnation process. The liquid is adjusted to an appropriate amount by automatic replenishment from the auxiliary tank 37, and the liquid is sequentially supplied to each impregnation tank 1, 2, and 3. In addition, the above-mentioned auxiliary tank 3
It is also possible to replace the impregnating liquid 17 in No. 7 with the washing water 18 and use it for adjusting the amount of water in the washing step.

The present invention has the above configuration, and in the first invention, there is no need to separately provide a storage tank for impregnating liquid and washing water, and the downtime of each device is eliminated or shortened, labor is reduced, and productivity is improved. In the second invention, it is possible to automatically replenish the impregnating liquid taken out by the article to be treated and to easily store the excess amount of the impregnating liquid to cope with the increase in the volume of the article to be treated. It has the excellent effect of being adjustable.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings illustrate embodiments of the present invention, FIG. 1 is a flow sheet of the impregnation apparatus of Example 1, FIG. 2 is a process diagram of the same, and FIG. 3 is the impregnation apparatus of Example 2. FIG. 4 is a flow sheet for establishing a conventional example of an impregnating apparatus. 1...First impregnation tank, 2...Second impregnation tank, 3...Third impregnation tank, 4, 5, 6... Sealed door, 10, 11, 12...Product to be processed, 13...
...Communication pipe, 14,15,16...Opening/closing valve,
17...Impregnation liquid, 18...Washing water, 19.
... Vacuum pump, 20 ... Air pressure, compressor, 21, 22, 23 ... Vacuum on-off valve, 24, 2
5, 26... Compressed air on/off valve, 27...
・Vacuum piping, 28... Compressed air piping, 37...
...Auxiliary tank, 38...Opening/closing valve.

Claims (1)

[Scope of Claims] 1. Three impregnating tanks for accommodating products to be processed are provided, and each impregnating tank has a sealed door attached to its upper end so that it can be opened and closed, and the bottom of each impregnating tank communicates with each other. The communication pipes are connected via on-off valves, each impregnation tank is capable of sequentially storing impregnating liquid and washing water, and a vacuum pump and an air compressor are connected to the upper part of the impregnation tank via on-off valves. An impregnation device with three continuous impregnation tanks. 2. Three impregnation tanks are provided to accommodate the products to be processed, and each impregnation tank is equipped with a sealed door at its upper end so that it can be opened and closed, and a communication pipe that communicates with the bottom of each impregnation tank has an on-off valve. Each impregnating tank can sequentially store impregnating liquid and washing water, and an auxiliary tank is connected to the communicating pipe via an on-off valve to automatically replenish the exhausted impregnating liquid.
An impregnation apparatus using three impregnation tanks, characterized in that a vacuum pump and an air compressor are connected to the upper part of each impregnation tank via an on-off valve.