JP2002248378A - Centrifugal drainage equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide centrifugal drainage equipment which is capable of safely and surely performing cleaning and draining of a treating material and is also usable in a fully automatic treatment system as well. SOLUTION: The centrifugal drainage equipment which has an outer peripheral drum capable of storing liquid and a rotatable rotary drum on the inner side of the outer peripheral drum, is provided with a plurality of drainage holes on at least the flank of the rotary drum and is disposed with an openable and closable discharge port penetrating the base surfaces of the outer peripheral drum and the rotary drum is provided. A scraping member which is capable of scraping the treating material sticking to the inner side of the rotary drum may be disposed to face the inner side of the rotary drum to be fixed in this state to the outer peripheral drum side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal dewatering apparatus for performing a dewatering process from a processed material by using a centrifugal force, and more particularly to a structure for discharging a liquid and a processed material during dewatering.

[0002]

2. Description of the Related Art A conventionally used centrifugal dewatering apparatus is a method in which a processed material is charged through an opening at the top of the device, and after the liquid removal and washing operations are completed, the processed material is again removed from the opening into which the processed material is charged. Is common. According to this method, it takes time and effort to take out, and the work efficiency is reduced. Therefore, in order to perform the removal effectively, a method of raising and lowering the inner rotating basket and opening and closing the fixed tank located on the outer periphery thereof has been implemented. However, even with these methods, the work is time-consuming. In addition, there is a disadvantage that the apparatus becomes large and the equipment cost increases.

[0003] In addition, instead of taking out the processed material upward, the lower part of the rotating basket is opened, and the processed material is introduced while rotating the rotating basket, thereby improving the method of removing the processed material upward. Because the lower seal is incomplete, the discharged liquid or processed material may fall, and is not suitable for general use. In particular, it is difficult to use a conventional centrifugal dewatering device when the liquid to be dewatered is a dangerous strong alkaline solution, strong acid solution, corrosive liquid, or the like. Further, after the first liquid removal, cleaning or neutralization with a cleaning liquid is usually performed. However, in the conventional method of discharging to the lower part, a processed material to be discharged is stuck to a seal portion, and a stable seal cannot be realized. For this reason, the method of storing cleaning water in the fixed tank and performing cleaning is abandoned, and a method of directly spraying cleaning water with a water spray pipe on the processed material formed inside the rotating basket is adopted, but this method is not sufficient. It is difficult to obtain a cleaning effect.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and it is an object of the present invention to carry out washing and dewatering of processed materials safely and reliably, and at the same time, a fully automatic operation. The present invention provides a centrifugal drainage device that can be used in the processing system of (1).

[0005]

SUMMARY OF THE INVENTION The present invention provides the following centrifugal dewatering apparatus to solve the above-mentioned problems.
That is, an outer peripheral tank capable of storing liquid and a rotatable rotary tank provided inside the outer peripheral tank are provided, and a plurality of drain holes are provided on at least side surfaces of the rotary tank, and at the bottom of the outer peripheral tank and the rotary tank. Provided is a centrifugal drainage device provided with a through-hole that can be opened and closed. And in the configuration of the discharge port that is closed or opened by the opening / closing member being fitted or detached from the discharge port, the contact portion of the open / close member with the discharge port can seal the discharge port, and at the time of opening / closing operation. A scraper for scraping off deposits at the contact site may be provided. Further, the opening / closing member may rotate in conjunction with the rotating tub, and may be capable of opening / closing during rotation. Further, the opening and closing member is
A plurality of ejection holes for ejecting fluid to a contact portion with the discharge port,
A fluid conduit for supplying a fluid to the ejection hole.

[0006] A scraping member capable of scraping off the processing object adhering to the inside of the rotary tank may be fixed to the outer peripheral tank side in a state of facing the inside of the rotary tank. Here, a configuration may be used in which the scraping member has a scraping blade for scraping off the attached matter, and a shaft supporting the scraping blade, and the scraping blade is rotatable about the shaft. . Further, a plurality of ejection holes for ejecting a fluid to a contact portion with the attached matter, and a fluid conduit for supplying a fluid to the ejection holes may be provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to embodiments shown in the drawings. The embodiment of the present invention is not limited to the following, and can be appropriately changed. The liquid removing apparatus in this embodiment is used for processing unnecessary resist strips generated in a resist stripping step in a printed circuit board manufacturing process using a photosensitive resin. Since the strip is stripped with a strong alkaline solution or an organic solvent solution, the strip is dangerous and, after stripping, is in a state close to a gel or sol, and is very difficult to handle. Therefore, washing and dewatering are performed by the centrifugal dewatering device according to the present invention, and processing is performed so as to be easily handled. In addition, the centrifugal dewatering device according to the present invention can be used not only for a printed circuit board manufacturing process but also for various uses. In particular, the present invention provides a device suitable for a case where a liquid to be dewatered is a dangerous substance or a case where it is difficult to handle the liquid without dewatering.

FIG. 1 is a front sectional view of the apparatus, and FIG. 2 is a partially enlarged view showing a main part of the present invention. In the present device (1), a rotating basket (3) is disposed inside a hollow substantially cylindrical fixed tank (2). The rotating basket (3) is rotatably supported by the lower bearings (4) and (5), and is rotatable. The upper part has a substantially cylindrical liquid removing part (3a) having a large diameter, and the lower part has a substantially cylindrical shape having a small diameter. (3b). A large number of waste liquid holes are formed in the liquid removing section (3a) on the entire circumferential surface. Then, the pulley (6) at the lowermost end is rotated by driving the belt (8) by the motor (7) to rotate the rotating basket (3).

[0009] The upper part of the discharge part (3b) is a circular discharge port, which is opened and closed when the movable stopper (30) is fitted or detached from the upper part. The structure of the movable stopper (30) will be described later. In the rotating basket (3), a supply nozzle (9)
Supplies a mixed solution of a resist strip and a stripper.
The mixture is strongly alkaline and difficult to handle,
In the present apparatus, the supply is performed automatically. The liquid mixture supplied into the rotating basket (3) is removed by centrifugal force accompanying rotation. At this time, a filtration filter (10) is provided on the inner peripheral surface of the rotating basket (3), and the removed resist strip is attached to the filter (10). The deposit solidifies upon drying and deposits (11) on the entire filter (10).
A scraper (20) for removing 1) is provided.

FIG. 3 is a cross-sectional plan view of the rotating basket showing the operation of the scraping blade. The scraper (20) comprises a rotating shaft (22) rotated by a drive motor (21) and a scraping blade (23) connected to the rotating shaft, and scrapes off the deposit (11) at the end of the rotating blade. At this time, since the rotation of the scraping blade (23) is performed within a certain angle θ, it does not interfere with the movable plug (30). The scraping operation of the deposit (11) by the scraping blade (23) is performed while rotating the rotating basket (3), and at the same time, the scraping blade (23) is appropriately adjusted according to the thickness of the deposit (11). Rotate to adjust the scraping amount of the deposit (11). At this time, it is preferable to adjust the scraped-off resist strip into a fine flake shape in the subsequent processing.

In this embodiment, the scraping blade (2
An air pipe (24) is provided inside so that air can be blown out from the scraping site of 3). That is, the motor (2)
Air is sent from the upper part of 1), passes through the center of the rotating shaft (21), and is ejected from the tip of the scraping blade (23). Thus, the stripped resist strips can be effectively removed. Note that any gas or liquid can be used instead of air. For example, a more effective removal can be performed by using a cleaning liquid, a liquid that dissolves a processed material to be scraped, or the like.

The rotating basket (3) rotates at a low speed when supplying the resist stripping mixture, and the supply nozzle (9) faces the inner peripheral surface of the rotating basket (3), so that the filtering filter (10) is gradually removed. A deposit (11) is deposited on top. Then, at the stage where the supply is completed, the rotation is changed to the high-speed rotation, and the liquid is strongly removed.
At the time of the first liquid removal, the discharged strong alkaline liquid is discharged from the automatic draining valve (12). The liquid is reusable,
In particular, since the filtration is performed using the filtration filter (10), deterioration is small. Further, conventionally, since the resist strip was discarded without dewatering, the consumption of the liquid was intense. However, in the present invention, since the dewatering device is used, the liquid can be effectively recovered, and cost reduction can be achieved. Contribute to resource saving. After the first liquid removal, the sediment (11) is formed on the filtration filter (10), so that the scraping operation is performed using the scraping blade (23) and the rotating basket (3) is rotated while rotating the rotating basket (3). (3) Washing is performed by injecting washing water from above.

After the washing, the washing water is drained from the automatic drain valve (13), and the water is reused in another process. In the present invention, the automatic drain valve (12) and the automatic drain valve (1) are used.
By separately disposing 3), smooth separation between the strong alkaline liquid and the washing water is realized. The washing operation is performed several times as needed, and the injection and drainage of the wash water are all automatically performed by the automatic drain valve (13). At this time, P
Since the automatic operation is performed while measuring the PH value of the cleaning water by the H meter (14), the resist strip can be reliably washed and neutralized.

After the washing is completed, the movable stopper (30) operates. That is, the movable stopper (30) is connected to the actuator (1).
5) The link mechanism (16) and the movable stopper shaft (17) move up and down to open and close. Since the movable stopper shaft (17) is supported by the bearing members (18) and (18) and the bearing pipe (19), it can stably move up and down. The shaft support member protrudes from a part of the inner peripheral surface of the discharge portion (3b), and does not hinder the discharge.

As seen in the partially enlarged view of FIG. 2, three-stage scrapers (33), (34), and (35) are disposed at the contact portion of the movable plug (30) with the discharge portion (3b). And inside the movable stopper (30), two bearings (3
1) (32) is mounted, and the movable stopper shaft (17) is fitted to them. With this mechanism, only the movable stopper (30) can rotate in conjunction with the rotating basket (3), so that the scrapers (33), (34), (35) and the movable stopper (30) are less worn, and the movable stopper (30) is not worn. ) And the outlet (3b) are also maintained. At this time, the movable stopper shaft (17) does not rotate but merely moves up and down. Here, when the movable plug (30) operates, the rotating basket (3) may be rotating. That is, according to the present invention, since the movable stopper (30) also rotates together with the discharge part (3b) of the rotating basket (3), there is no danger of damage to the contact part even if the movable stopper (30) is moved up and down. . Thereby, work time can be shortened, and work efficiency can be improved.

The scrapers (33), (34) and (35)
It is preferably formed of a rubber-based member to improve hermeticity, and at the same time, has a function of removing extraneous matter such as resist strips adhered to the inner peripheral surface of the discharge portion (3b). Therefore, the lowermost scraper (35) may be formed of a rigid member, and a rubber-based member, a hard rubber, a fluorine-based member, or the like may be used. Here, the scraper is not the shape shown,
Any shape can be used. For example, a wedge-shaped scraper may be arranged downward or upward, and the arrangement may be made up of one or more stages instead of three stages.

Further, in the present invention, air pipes (36) and (36) as shown in FIG.
A configuration may be adopted in which air is blown out at a contact portion with the discharge portion (3b). Thereby, the attached matter can be effectively removed, and a thin air layer can be formed between the movable stopper (30) and the discharge portion (3b) to prevent abrasion.
Also, as in the case of the scraping blade (23), a fluid other than air can be used here. In particular, by using a liquid, the lubrication of the movable stopper (30) and the discharge portion (3b) can be improved.

The movable stopper (30) is provided with the above-mentioned structure, and is opened by moving upward from the closed state. Then, while rotating the rotating basket (3) at a low speed, the scraping blade (2)
3) is operated to discharge the flake-shaped resist strips. As described above, since the centrifugal dewatering device is configured, a processing solution such as a strong alkaline solution can be efficiently dewatered from a mixed solution of resist strips that has been conventionally difficult to handle. It is easy to handle by washing and neutralizing to make a flake-like solid. After discharge, the resin is a normal resin, so no special treatment is required and normal disposal is possible. Also, it can be easily recycled.

In the present embodiment, the above-described configuration is provided, but the form of the present apparatus can be appropriately changed. The shape of the movable plug may not be conical at the top but may be a column, or the movable stopper shaft (17) and the movable stopper (30) may rotate in conjunction with each other. A configuration in which the supply nozzle is not provided and the supply is directly performed from the upper part of the rotating basket is also possible. A nozzle for supplying the cleaning water may be provided or the supply nozzle may also be used.

[0020]

Since the present invention has the above-described structure, the following effects can be obtained. According to the centrifugal drainage device according to claim 1, since the openable and closable outlet that penetrates the bottom portion of the outer peripheral tank and the rotary tank is provided, it is easy to take out the processed material,
It is possible to improve work efficiency and reduce costs.
Further, since the size of the apparatus can be reduced, facility costs can be suppressed and installation is easy. In addition, since the washing water can be stored by providing the outer peripheral tank, it is possible to provide a centrifugal dewatering device capable of performing not only dewatering but also sufficient cleaning.

According to the centrifugal dewatering device of the second aspect,
Since the discharge port can be sealed, even if the liquid to be drained is dangerous and difficult to handle, there is no danger of the liquid or processed material dropping, and it is possible to provide a centrifugal dewatering apparatus that can be used for various purposes. . Equipped with a scraper to scrape off any deposits on the contact area during opening / closing operation of the discharge port, so that even if there is deposits, not only a sufficient airtightness is maintained, but also a completely discharged Will be possible.

According to the centrifugal dewatering device of the third aspect,
Since the opening / closing member rotates in conjunction with the rotating tub, the friction between the opening / closing member and the rotating tub is small, and deterioration of the contact portion can be suppressed. This contributes to cost reduction and longer life of the device. In addition, since it can be opened and closed even during rotation, it is possible to advance the process without stopping the rotating tub, and it is possible to improve work efficiency such as shortening work time.

According to the centrifugal dewatering device of the fourth aspect,
By ejecting the fluid from the ejection port, the function of the scraper can be further improved, the attached matter can be completely removed, and the scraping time can be reduced.

According to the centrifugal dewatering device of the fifth aspect,
Since the scraping member is provided, the processing object adhering to the rotary tank can be efficiently removed. In addition, since the processed material adhered to the rotary tank and solidified can be scraped off by the scraping member, there is no need to remove the processed material manually, and automation and efficiency of the working process can be achieved.

According to the centrifugal dewatering device according to claim 6,
The amount of scraping can be appropriately adjusted by the rotation of the scraping blade, so that even a solidified processed product can be effectively removed. In addition, since excessive force is not applied to the scraping member and the rotating tank, it contributes to prevention of failure and extension of the life of the member.

According to the centrifugal dewatering device according to claim 7,
By ejecting the fluid from the ejection port, the function of the scraping member can be further improved, the attached matter can be completely removed, and the scraping time can be reduced.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a centrifugal drainage device according to the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a plan cross-sectional view of a rotating basket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Centrifugal dewatering apparatus by this invention 2 Fixed tank 3 Rotating basket 3a Drainage part 3b Discharge part 4, 5 Bearing 6 Pulley 7 Motor 8 Belt 9 Supply nozzle 10 Filtration filter 11 Sediment 12 Automatic drainage valve 13 Automatic drainage valve 14 PH meter 15 Actuator 16 Movable plug link mechanism 17 Movable plug shaft 18 Bearing member 19 Bearing pipe 20 Scraper 21 Drive motor 22 Rotating shaft 23 Scraping blade 24 Air line 30 Movable plug 31, 32 Bearing 33 Scraper 34 Scraper 35 Scraper 36 Air line θ Rotation angle of scraping blade

Claims (7)

[Claims] 1. A centrifugal dewatering device for removing liquid from a processed material using centrifugal force, comprising: an outer peripheral tank capable of storing a liquid; and a rotatable rotary tank inside the outer peripheral tank. A centrifugal dewatering apparatus comprising: a plurality of drain holes provided on at least a side surface of a tank; 2. A structure in which the discharge port is closed or opened by fitting or detaching an opening / closing member to / from the discharge port, wherein a contact portion of the opening / closing member with the discharge port can seal the discharge port. The centrifugal dewatering device according to claim 1, further comprising a scraper that scrapes off deposits at the contact site during the opening / closing operation. 3. The centrifugal dewatering device according to claim 1, wherein the opening / closing member rotates in conjunction with a rotary tank, and can be opened / closed even during rotation. 4. The centrifugal device according to claim 1, wherein the opening / closing member includes a plurality of ejection holes for ejecting a fluid to a contact portion with a discharge port, and a fluid conduit for supplying the fluid to the ejection holes. Drainage device. 5. The rotary tank according to claim 1, wherein a scraping member capable of scraping off a processing substance adhering to the inside of the rotary tank is fixed to the outer circumferential tank side in a state facing the inside of the rotary tank. Centrifugal dewatering device. 6. The scraping member comprises: a scraping blade for scraping off an adhered substance; and a shaft for supporting the scraping blade, wherein the scraping blade is rotatable about the shaft. 5
A centrifugal dewatering device according to item 1. 7. The centrifugal separator according to claim 5, wherein the scraping member includes a plurality of ejection holes for ejecting a fluid to the inside of the rotary tank, and a fluid conduit for supplying the fluid to the ejection holes. Liquid device.