JPH04104826A - Dispersion method by mobile tank - Google Patents

Abstract

PURPOSE:To carry out efficient dispersion by inserting a liftable disperser in a mobile tank, receiving the drippings from the disperser raised after the dispersion is finished and facilitating the cleaning of the disperser. CONSTITUTION:The disperser A is formed by a perforated basket 20 packed with many granular mediums (m), a rotary block 24 provided with many disks 23 fixed to the rotary shaft 22 freely rotatably inserted into the basket 20 and an impeller 25 furnished to the tip of the rotating shaft 22 piercing the basket 20 and freely liftable. The disperser A is lowered into a mobile made tank 1 to carry out dispersion, a liq. pan 26 capable of being moved back and forth with respect to the disperser A is provided below the disperser A, and the drippings from the disperser A are received by the pan 26 when the disperser A is raised. A cleaning tank 50 is further provided to clean the disperser A. Consequently, efficient dispersion is carried out.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a distributed processing method using moving tanks.

[Background of the invention and prior art] In manufacturing equipment for paints, dyes, chemicals, etc., raw materials (milheses) such as pigments, solvents, and additives are processed into metals, glass,
A process of stirring and dispersing with granular media such as ceramics is essential, and dispersion agitators such as ball mills, 2-grain mills, and colloid mills have been used since ancient times.

There are various types of these dispersing machines depending on the type of material to be dispersed (9) the required particle size, shape, etc. of the dispersion, or dispersion efficiency, etc., but structurally, there are models that can be cooled on the outer peripheral surface of a fixed vessel. It has the ability to agitate and disperse the millhose supplied to the vessel along with the media by attaching a jacket and arranging a rotating shaft inside the vessel, and installing a large number of disks and pins on the rotating shaft. If you look at it,
There was not much difference between each model. In addition, in paint manufacturing processes, etc., the dispersion process in which pigments are finely ground and kneaded into a vehicle is difficult to clean and may cause contamination, so many dispersers are installed and the dispersers are connected to fixed piping. We responded by connecting.

Recently, due to the diversification of demand, color changes and two-product switching have become more frequent than ever in the paint and pharmaceutical industries, and the traditional low-volume, high-volume production system has been replaced by a high-mix, variable-volume production system. It has become necessary to shift to a production method.

Various research and developments have been carried out regarding this new high-mix, variable-volume production system, but currently, the batch production system using moving tanks is said to be the most desirable production system from the point of view of production efficiency. It has been put into practical use.

Here, the batch production method using moving tanks means that an automatic transport trolley loaded with a moving tank trolley carrying the main tank moves by itself to a station where each unit work is consolidated and is positioned along the transport path. Then, the transfer device transfers the mobile tank trolley from the automatic transport trolley to the station mount, connects or connects each equipment on the station side with the tank on the station mount, performs a predetermined unit work, and then transfers the tank after completing the work. This is a production system in which the loading device returns the mobile tank truck from the station mount to the automatic transport vehicle, and then the automatic transport vehicle moves to another station to perform another unit work, and the same operation is repeated sequentially.

Conventionally, a moving tank system was used in the manufacturing process of paints and other products, in which the tank was placed on a trolley and moved manually, but compared to the batch production method using the new mobile tank mentioned above, various problems remained. was.

In other words, in the dispersion process, the tank placed on a trolley is manually moved under the dispersion machine, and the dispersion machine is inserted into the tank to perform the work, or the raw materials (mill base) such as pigments, solvents, and other additives are transferred through piping. The common method was to supply the liquid to a fixed type disperser, and then, when the dispersion was completed, receive the liquid from the disperser via piping into a fixed tank or the above-mentioned manual moving tank.

[Problems to be Solved by the Invention] The present invention solves the problems of the conventional device described above, and provides a dispersion device that can be raised and lowered by inserting the dispersion device into a movable tank to carry out dispersion treatment, and then raising the dispersion device after completing the work. The object of the present invention is to provide a dispersion processing system using a moving tank that can receive drippings of liquid and also facilitate cleaning of the dispersion device.

[Means to solve the problem]

In order to achieve the above object, the dispersion treatment method using a moving tank according to the present invention includes a porous basket loaded with a large number of granular media, and a rotating shaft rotatably contained in the basket. A dispersing device consisting of a rotary block with a large number of discs installed therein, and an impeller provided at the tip of the rotating shaft passing through the basket is provided so as to be able to move up and down, and the dispersing device is lowered to move the mill base filled. Insert into a tank to perform a dispersion process, and a liquid receiving tray that can freely move forward and backward with respect to the dispersion device is disposed at the bottom of the dispersion device,
The present invention is characterized in that, when the dispersing device is raised, the liquid dripping from the dispersing device is received by the liquid receiving tray, and a means for cleaning the dispersing device is provided.

[Effect]

In the dispersion processing method using a movable tank according to the present invention, when a movable tank cart is transferred to a dispersion station platform installed along a conveyance path and performs dispersion processing, a large number of granular media objects that can be raised and lowered are loaded. The dispersion device with a porous basket is lowered downward and inserted into the movable tank to perform dispersion treatment, and after the treatment is finished, the dispersion device is raised from inside the tank to return the movable tank. In conjunction with this, a liquid receiving tray that can move forward and backward moves forward below the dispersion device and receives the drops from the dispersion device.The dispersion device is also washed by dispersing the liquid into a cleaning tank located near the dispersion station. This can be done either by inserting the device, or by transferring the mobile cleaning cart to the dispersion station and inserting the dispersion device into the cleaning tank.

[Example] Embodiments of the present invention will be described based on the drawings.

In Figure 1, the refrigerant is injected into the outer periphery.
The automatic transport cart 3 loaded with the mobile tank cart 2 carrying the tank 1 equipped with the tank 1 moves by itself according to instructions from the central control room, is positioned by the positioning device 5 near the distribution station frame 4, and stops at a predetermined position.

The automatic transport vehicle 3 described above is provided with a transfer device 7, and the transfer device 7 is operated to transfer the movable tank vehicle 2 from the automatic transport vehicle 3 to the dispersion station pedestal 4.

The gap between the above-described positioned automatic transport vehicle 3 and the distribution station pedestal 4 is small, and the rails 8 on the automatic transport vehicle 3 and the rails 9 on the distribution station pedestal 4 are in a straight line. The mobile tank cart 2 is transferred onto the dispersion station pedestal by the moving device 7, and is moved onto the dispersion station 4 by the positioning device 10 provided on the movable tank 2 and the positioning device 10' provided on the dispersion station pedestal 4. The movable tank truck 2 is stopped at a predetermined position.

Regarding the above-mentioned transfer device 7, the present applicant filed a patent application No.
Although it has already been proposed in No. 273784, it is not limited to this method, and any commonly used transfer method may be used.

Reference numeral 12 denotes a column erected near the station pedestal 4. A cylinder 13 is installed inside the column 12, and a support arm is fixed to the tip of a piston rod 14 of the cylinder 13 in a direction perpendicular to the piston rod 14. will be established.

The support arm 15 has a plurality of rods 16.16.・・・
... are vertically installed, and the plurality of rods 16.16.・・・
. . . In the middle part thereof, in a direction perpendicular to the rod 16, there is a disc-shaped lid 1 with a gasket 18 attached to the lower surface of the outer periphery.
7 is fixed and said rod 16.16.16
．． At the lower end, there are many small holes 19° 19, 19 on the upper surface, lower surface and side walls. A cylindrical basket 20 with openings is fixedly and vertically installed. A large number of small holes 19.19. are opened in the basket 20 described above.・
The diameter of . . . is the diameter of a large number of granular media m loaded into the basket 20.

Since the diameter is smaller than the diameter of the media m, m, etc., even if the rotating block described later rotates, the media m, mm, etc.
, ... will not be scattered outside the basket 20.

Openings around which a sealing mechanism such as a gasket is attached are provided at the center of the upper and lower surfaces of the lid 17 and the basket 20, and the openings are connected to the motor 21 fixed to the support arm 15. A rotating shaft 22 that is vertically installed is rotatably inserted, and an impeller 25 is fixed to the tip of the rotating shaft 22 that passes through the lower surface of the basket 20.

The rotating shaft 22 is included in the basket 20 described above.
has a large number of disc-shaped discs 23.23.23° on the outer periphery.
A cylindrical rotary block 24 with... attached thereto is fixed.

26 is a liquid receiving tray whose upper part is completely open, and the cough liquid receiving tray 26
Support legs 27. 27. . . . are provided, and the supporting legs 27.27. Each of . . . has a roller 28.28. ... is rotatably supported.

The aforementioned roller 28.28. . . . is loosely fitted into a groove provided in the support (29.29) with a downward slope in the front, and the liquid receiving tray 26 is movable while being placed astride the support (29.29). . Further, the front portion of the liquid receiving tray 26 is formed with, for example, an arc-shaped notch 26' in accordance with the shape of the tank 1 (see FIG. 2).

A stopper 30.30 is protruded from the tip of the support 29.29, which has a downward slope in the front, and the liquid receiving tray 26, which is movable and straddles the support 29.29, is connected to the support leg 27. 27. Since the lengths are different as mentioned above, they are always maintained in a horizontal state, and are prevented from descending by the stop collar 30.30 at the tip of the support 29.29. There is. This position is adjusted so that it is directly below the dispersion device A.

A gutter 32 is disposed in parallel with the supports 29 and 29 in a fixed manner, and a drain pipe 34 is connected to a drain port 33 opened at the rear end of the liquid receiving tray 26. The other end of the discharge pipe 34 is configured to open into the gutter 32.

In addition, for cleaning the dispersion device, there is a method in which the mobile cleaning cart is transferred to the dispersion station pedestal 4 and the dispersion device A is inserted into the cleaning tank for cleaning.
There is a method of cleaning by fixing a cleaning tank nearby, rotating the support arm 15, and inserting the dispersion device A into the cleaning tank. −
The mobile cleaning device, which has already been proposed as No. 273783, will be explained based on FIG. It is arranged in a tubular shape. 525
2. . . . are nozzles having a large number of openings on the inner circumferential wall of the cleaning tank, and the nozzles 52, 52. . . . is connected to a pipe 53, which is connected to a cleaning liquid take-out pipe 54 that opens at the bottom of the cleaning liquid tank 51, an automatic valve 55, and a pump 5.
6 to a cleaning liquid transfer pipe 57 connected thereto.

Further, 58 is a cleaning liquid supply pipe, 59 is a liquid level gauge, 60 is a gas vent port, and 61 is a discharge pipe.

The automatic transport vehicle 3 loaded with the mobile cleaning trolley 62 carrying the cleaning tank 50 receives the cleaning fluid from the cleaning fluid supply pipe 58 into the cleaning fluid tank 51 at the cleaning fluid supply station.
Self-propelled to the target distributed station mount 4, transfer device 7
After operating the mobile cleaning cart 62 to transfer it to the dispersing station frame 4 and positioning it at a predetermined position, the dispersing device is inserted into the cleaning tank 50 and cleaning is performed by spraying cleaning liquid from the nozzle 52.

Since the washed liquid accumulates at the bottom of the washing tank, it is discharged from the discharge pipe 61 at a predetermined station.

Furthermore, depending on the state of contamination of the dispersion machine, the cleaning liquid may be placed in a cleaning tank from the beginning, and the dispersion apparatus may be inserted into the cleaning liquid and cleaned while being rotated. Then, by installing a washed liquid discharge pipe in the dispersion station and connecting it to the discharge pipe of the cleaning tank, when the first cleaning in the cleaning liquid is completed, the cleaning liquid is sprayed from the above nozzle as a second cleaning. It can be washed again.

The present embodiment is configured as described above, and its operation will be explained. Stations for independently processing each unit work are installed along the conveyance path in the order of the process, and the main tank 1 is mounted on the conveyance path. In a mobile tank type batch production system in which an automatic transport trolley 3 loaded with a mobile tank trolley 2 moves by itself and performs unit work sequentially at each station, raw materials, pigments, solvents and other additives (mill base) 11 are delivered to the raw material supply station. The mobile tank trolley 2 that has been loaded is loaded onto the automatic transport trolley 3 and self-propelled to the dispersion station 4 for dispersion processing, and after being stopped at a predetermined location by the positioning device 5, the interior is loaded onto the automatic transport trolley 3. The transfer device 7 is operated to transfer the mobile tank cart 2 from the automatic transport cart 3 to the dispersion station pedestal 4. As the above-mentioned mobile tank truck 2 is transferred, the tank 1
The tank wall contacts the notch 26' of the liquid receiver 26 and pushes the liquid receiver 26 while maintaining this contact, and the liquid receiver 26 retreats along the support 2929. When the mobile tank truck 2 is transferred to a predetermined position on the distribution station frame 4, the positioning device 10, 10' is activated and stopped. At this time, tank 1
Dispersion device A is located directly above.

Small hole of basket 20 to dispersion device, media mm,・
The particle size, amount, etc. of the material 1 are determined by the type of mill base 11 filled in the tank 1, the dispersed particle size 1 particle size distribution of the mill base 11, etc.

Next, the cylinder 13 on the inner leg of the support arm 12 is activated to lower the support arm 15, and the dispersion device A is inserted into the tank 1.
．． The lid body 17 fixed to... faces the top of the tank 1, but there is a gasket 1 on the lower surface of the periphery of the lid body 17.
8, the tank 1 is completely sealed by the lid 17.

The dispersion device A is completely inserted into the tank 1, and the lid 17 is inserted into the tank 1.
When the motor 21 is operated and the rotating shaft 22 is rotated, the impeller 25 fixed to the tip of the rotating shaft 22
, a number of disks 23.2 attached to the rotating block 24
3.23. ... begins to rotate, but first, due to the rotation of the impeller 25, the mill base 11 in the tank 1 begins to circulate along the tank wall from bottom to top and then from top to bottom. Numerous small holes 19.19.19.・・・・・・ is media m
Although it is smaller than the particle size of 9m, m, ......, it is much larger than the particle size of Millbase 11, so Millbase 11
can also freely go in and out of the basket 20.

On the other hand, inside the basket 20, a large number of disks 2323,
... rotates at high speed, and media m, m, ...
Because the mill base moves violently within the 20, the mill base is susceptible to collisions with these objects, disks, media, etc.
The media is mixed and dispersed by friction, but since the particle size of the media is larger than the mesh of the basket 20, it does not scatter outside the basket 20.

After the dispersion work has been completed for a predetermined period of time, the operation of the motor 21 is stopped, and then the cylinder 13 is operated to raise the support arm 15 and the dispersion device A is taken out from the tank 1.

Next, the transfer device 7 is operated to return the mobile tank cart 2 from the dispersion station frame 4 to the automatic transport cart 3, but as described above, the tank wall is in contact with the notch 26' of the liquid receiving tray 26 and the liquid is Since the receiving tray 26 is pushed up, when the mobile tank truck 2 retreats due to the above-mentioned transfer, the liquid receiving tray 26 is pushed up.
6 also descends and moves forward along support 29.29, which has a slight downward slope. Therefore, drops of mill base attached to the dispersion device A can be completely received by the liquid receiving tray 26, and when the mobile tank cart 2 is completely transferred to the automatic transport cart 3, the liquid receiving tray 26 is placed directly under the dispersing device A. It will be located. There is a stopper 30.30 at the tip of the support 29.29.
The protruding structure prevents further movement of the liquid receiving tray 26.

Further, a discharge port 33 opened at one end of the liquid receiving tray 26 is connected to the gutter 32 via a discharge pipe 34, and by collecting the dripped liquid at the other end of the gutter 32, the liquid receiving tray 26 and the gutter 32 are There is no danger of it becoming full.

The mobile tank cart 2 filled with the dispersed millbase is loaded onto an automatic transport cart 3 and self-propelled to another station.

Furthermore, there is no problem in cleaning the dispersion device A when dispersing millbases of the same system, but when dispersing millbases of a completely different system, it is necessary to clean the dispersion processing device A.

If the number of dispersion stations installed is small, consider installing a cleaning tank permanently near the dispersion station, installing another drive source to rotate the support arm, and inserting the dispersion device A into the cleaning tank for cleaning. However, in general, the time required for dispersion treatment is long, and since various types of mill bases are handled, it is necessary to install multiple dispersion stations.In addition, installing the fixed cleaning tank described above makes it difficult to make effective use of factory land. Due to the drawbacks, the mobile cleaning trolley 6 is used in this embodiment.
2 is transferred to the dispersion station to clean the dispersion device.

That is, the mobile cleaning cart 62 that has received the cleaning liquid into the cleaning liquid tank 51 at the cleaning liquid supply station is loaded onto the automatic transport cart 3 and runs by itself, and after stopping at a predetermined position near the distribution station mount, the transfer device is moved. The mobile washing cart 62 is operated and transferred to the dispersion station frame.

At this time, the liquid receiving tray 26 located directly below the dispersion device A
is pushed by the washing tank wall and moves and retreats in synchronization with the transfer of the mobile tank washing cart, and when the washing tank 50 is located directly below the dispersion device A, the operation of the transfer device 7 is stopped.

Next, operate the Norinda 13 to move the dispersion device A to the cleaning tank 50.
, and after sealing with the lid body 17, the pump 56 is activated to spray the cleaning liquid through a number of nozzles 52, 52. By rotating the shaft 22 at the same time as the injection, the rotating block 24, the disk 23.23...
・Etc. are cleaned evenly.

The washed liquid accumulates at the bottom of the washing tank 22, so the mobile washing cart 62
is moved to the cleaning liquid supply station and discharged from the washed liquid cleaning tank, and at the same time, the cleaning liquid is filled into the cleaning liquid tank 51 in preparation for the next cleaning of the dispersion machine.

If necessary, as described above, the cleaning tank is also filled with cleaning liquid from the beginning, and the dispersion device A is inserted into the cleaning liquid and rotated for cleaning. After discharging the cleaning liquid, the nozzle 52.5
2. It is also possible to perform secondary cleaning by spraying a cleaning liquid.

The basket 2o that is attached to the dispersion device described above has its upper surface, side walls, and lower surface removably fastened with bolts, etc., so that it can be used for attaching baskets with different meshes, replacing and replenishing media m, m, etc. It's Nishide.

The refrigerant is injected into the jacket 6 attached to the outer periphery of the tank 1 at a dispersion station, etc., and the mill base 11 performs dispersion processing by collision and friction with the disk 23, media mm, etc., as described above. Therefore, forced cooling is necessary for dispersing a mill base that is sensitive to temperature. In that case, it is also possible to connect the refrigerant supply equipment and the jacket 6 at the dispersion station to perform forced circulation cooling.

In order to clean the dispersion device A, the cleaning effect is enhanced by filling the cleaning liquid tank 51 with various solvents or warm water, if necessary, and spraying them from the respective nozzles.

The disk 23 attached to the rotating block 24 of the dispersing device A described above is disk-shaped in this embodiment, but it is effective to provide an opening in the disk to facilitate the vertical movement of the mill base. It is also possible to provide the block 24 with a spiral protrusion.

The driving of automatic transport vehicles, transfer equipment, cylinders, motors, etc. are all computer-processed in the central control room.

According to this embodiment, a dispersion device includes a rotary block having a large number of discs inserted into a cylindrical porous basket, the rotary block being fixed to a shaft, and an impeller fixed to the tip of the shaft. Since it is movable up and down, when the mobile cart filled with mill base is transferred to the dispersion station frame, the dispersion device is inserted into the tank and subjected to dispersion treatment, and when the dispersion treatment is completed, the dispersion device is raised. The liquid receiving tray moves to receive the drops from the dispersion device, and cleaning of the dispersion device is carried out by transferring the mobile cleaning cart to the dispersion station platform and inserting the dispersion device into the cleaning tank. It is something that can be done.

This embodiment is suitable for dispersing various types of millbase in high-mix, variable-volume production, and is applicable either to the conventional method of supplying and discharging millbase to a fixed disperser using piping, or manually to a tank container. Compared to the method of moving the dispersion machine and inserting the dispersion machine into the container, the production efficiency is significantly higher, and it solves problems such as contamination of the surrounding area by the main liquid and cleaning of the dispersion machine, and its application range is extremely wide. It is something.

〔Effect of the invention〕

In the dispersion treatment method using a moving tank according to the present invention, a rotating block equipped with a large number of disks fixed to a rotating shaft is inserted into a porous basket loaded with a large number of granular media, and the above-mentioned rotation The impeller is fixed to the externally protruding tip of the shaft, and these, the basket rotation block,
A dispersion device consisting of an impeller is movable up and down, and the dispersion device is lowered and inserted into a moving tank filled with mill base to perform dispersion processing, and a dispersion device is provided below the dispersion device that can move up and down with respect to the dispersion device. When the dispersion device is raised after the dispersion process, the dispersion device receives the drops etc. from the dispersion device, and is also provided with a cleaning means for cleaning the dispersion device. During processing, the mill base inside the tank is circulated from bottom to top and from top to bottom along the tank wall by the rotation of an impeller fixed at the tip of the rotating shaft.
The mill base freely enters the basket of the dispersion device, and a number of disks rotate at high speed within the basket.
Since the media also moves violently within the basket, the mill base is mixed and dispersed by collisions and friction with these disks and media.

After the dispersion work is completed, when the dispensing device is raised and the tank is moved for transfer, the liquid receiving tray moves forward in synchrony with it and reaches the bottom of the dispersing device, and the liquid receiving tray receives the drops etc. from the dispersing device. There is no risk of contamination of the surrounding area by drops, etc., and the dispersion device is also equipped with cleaning means, so the dispersion process can be carried out efficiently even when processing mill bases of completely different systems.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is an overall explanatory diagram of the dispersion process, FIG. 2 is a plan view of the liquid receiver, and FIG. 3 is an explanatory diagram of the movable cleaning cart. A: Dispersion device 1/tank 2; Mobile tank truck 3: Automatic transport truck 4: Distribution station frame 20: Basket 225 Rotating shaft 23, 23. ...: Disk 24 Rotating block Gobain spatula 26, liquid receiver 50 Washing tank 62: Mobile washing cart

Claims (1)

[Claims] a porous basket loaded with a number of granular media;
A dispersion device consisting of a rotating block having a large number of disks fixed to a rotating shaft rotatably contained in the basket, and an impeller provided at the tip of the rotating shaft penetrating the basket is movable up and down. The dispersion device is lowered and inserted into a moving tank to perform a dispersion process, and a liquid receiving tray that can freely move forward and backward with respect to the dispersion device is provided at the bottom of the dispersion device, and the dispersion device is raised. A dispersion processing method in a moving tank, characterized in that the liquid receiving tray receives liquid dripping from the dispersion device, and further comprises cleaning means for the dispersion device.