JPH0372936A - Multipurpose stirring tank - Google Patents

Abstract

PURPOSE:To facilitate the washing of the interior of a stirring tank by providing a stirring shaft having a hollow part in the stirring tank and allowing the stirring shaft to freely rise and fall. CONSTITUTION:A predetermined amount of a raw material and an auxiliary raw material are automatically charged in a portable tank 1 from a supply port 5 and, thereafter, the portable tank 1 is moved to a power station to be automatically connected to a power source and further connected to a drive apparatus 7 to move a stirring shaft 2 up and down under rotation to stir the liquid in the tank 1. When it is necessary to add a mixed liquid newly to perform reaction, these supply devices and a supply pipe are respectively independently connected automatically to feed said liquid under pressure by a pump 12 and the mixed liquid passed through the hollow part 3' of a stirring blade 3 through the inner pipe 2' of the hollow part of the stirring shaft 2 to be injected from the jet part 4 provided to the stirring blade 3 through a check valve 14. By this constitution, productivity and the efficiency of work can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multipurpose stirring tank, and more particularly to a multipurpose stirring tank that is equipped with a reaction promoting function and whose interior can be easily cleaned.

[Prior Art and its Problems] In cleaning a tank, a conventional and common method involves inserting a cleaning mechanism into the upper opening of the tank. For example, in the cleaning of a movable portable tank, a cleaning device consisting of a brush attached to a rotating shaft is inserted from the top of the tank, and then the opening of the tank is closed. An apparatus is disclosed in which the inside of the tank is cleaned using a cleaning liquid, and the cleaning is carried out in two stages: rough cleaning and final cleaning, if necessary. However, in the disclosed method, it is necessary to sufficiently control the position of the tank and the cleaning device so that the cleaning device is inserted so as not to come into contact with the tank, and also to clean the tank containing toxic or dangerous substances. In this case, it is absolutely necessary to use a closed system for safety and health reasons, and the above-mentioned conventional technology still has problems in this respect.

Furthermore, JP-A-51-145178 discloses a method in which a cleaning device attached to the neck of the reaction tank rotates around the axis of the reaction tank and sprays pressurized liquid to clean the reaction tank. Although this device has been disclosed, the problem of sealing the tank still remains in this device as well, as described above.

Japanese Patent Application Laid-Open No. 61-283331 is equipped with a cleaning mechanism that injects a movable cleaning liquid between a standby position outside the tank and the inside of the tank, and a stirring blade is intermittently stopped rotating in small angle increments. Discloses a mixing tank having a function of automatically cleaning the water.

The technology for automatically cleaning a nozzle arm with a high-pressure diesel jet nozzle by rotating it up and down inside the tank was disclosed in Japanese Patent Laid-Open No. 54-1
Although it has already been disclosed in Japanese Patent Application Laid-Open No. 10667/1986-180006, these techniques only have the function of cleaning the tank.

Furthermore, regarding the stirring device, for example,
Publication No. 8629 and Publication of Utility Model Application No. 150047/1986 are
The technology discloses a technology for supplying and stirring liquid and gas from a stirring member with multiple holes, but it does not have any cleaning function, and similarly, a gas-liquid contact device has already been disclosed in Japanese Patent Application Publication No. Publication No. 54-20972, Special Publication No. 60-5788
Although there are techniques disclosed in Japanese Patent Application Laid-Open No. 62-45335, etc., these are merely vapor phase growth apparatuses.

[Problem to be solved by the invention]

With the recent diversification of demand, the trend of the times is changing from the traditional high-volume production of small variety products to a high-mix low-volume production method. As a result, various production methods have been studied and developed, and it has become an efficient and desirable method to carry out continuous production in a batch method using a plurality of relatively small portable tanks.

The present invention was developed in response to the above-mentioned demands of the times, and solves all the problems of the prior art described above.
As the stirring shaft inside the tank moves up and down, the stirring blades rotate and rotate.
Stirring is carried out in the same tank by rotating and injecting cleaning liquid, mixed liquid 1 gas, gas, etc. from a plurality of injection parts attached to the stirring blade.

The purpose is to provide a multipurpose stirring tank that can efficiently perform cleaning, mixing, gas-liquid reactions, etc.

[Means to solve the problem]

In order to achieve the above-mentioned object, the multi-purpose stirring tank according to the present invention is provided with a stirring shaft having a hollow part connecting hollow stirring blades each having a plurality of injection parts attached thereto. The cleaning liquid and mixed liquid can be moved up and down through the hollow part of the stirring shaft.

It is characterized in that gas, gas, etc. is pumped and injected from the injection part of the stirring blade.

[Function] The multi-purpose stirring tank according to the present invention is provided with a hollow stirring shaft connecting stirring blades each having a plurality of injection parts in the tank, and the stirring blade is used not only as a stirring means but also as a cleaning device inside the tank. It is also used as a mixing and gas-liquid reaction means, and the stirring blade is equipped with a plurality of injection parts as described above, and the cleaning liquid, mixed liquid, Gas, gas, etc. are fed under pressure and are injected from the injection part of the stirring blade.

The above-mentioned stirring blade moves up and down while rotating, so the stirring effect is high.Also, as mentioned above, the cleaning liquid is injected from the injection part attached to the stirring blade, and the cleaning liquid is scattered by centrifugal force due to the rotation of the stirring blade, so it does not disturb the inside of the tank. Also, during mixing and gas-liquid reactions, the same method can be used to remove mixed liquid, gas,
This can be done efficiently by injecting gas or the like.

〔Example〕

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

In FIGS. 1 to 3, 1 is a tank, a stirring shaft 2 having a hollow part 2' is inserted into the center of the tank 1, and a bearing 13 is provided in the insertion part of the stirring shaft 2 of the tank 1, The stirring shaft 2 is supported by the bearing 13. The upper end of the stirring shaft 2 is connected to the tank 1.
It is connected to an external drive device 7, and the stirring shaft 2 can be moved up and down and rotated by the drive device 7.

3.3. . . . are a plurality of hollow stirring blades connected to the lower end of the stirring shaft 2, and the stirring blades 3゜3, .
A plurality of injection parts 4 are attached to each of... at arbitrary positions. To explain an example of the injection part 4 of the stirring blade 3, as shown in FIG. A check valve 14 is provided in a hollow portion 3' that communicates with the hollow portion (inner pipe) 2' of 2. The check valve 14 is composed of an elastic body 14', for example, and injects cleaning liquid, mixed liquid, gas, gas, etc. into the tank 1 through the injection part 4 in the direction of the arrow. This is to prevent the fluid from flowing back into the hollow part 2' of the stirring shaft 2 through the ball, and any structure may be used as long as it has this function. It may be a conventionally known device such as a pole check that has the function of suppressing the flow from one direction and the other direction.

FIG. 3(0) shows another example of the injection part 4 of the stirring blade 3, and in this example, the injection part 4 is provided not only at the tip of the stirring blade 3 but also at the blade part of the stirring blade 3. There is C.

11 is a bellows; one end of the bellows 11 is connected to the hollow part 2' of the stirring shaft 2, and the other end is connected to the supply pipe 8, which is connected to the cleaning liquid 5 mixed liquid, gas, gas, etc. Supply equipment T! (not shown) and can be inserted and removed freely,
It is adapted to be connected independently to each supply device.

The cleaning liquid, mixed liquid, gas, etc. are fed under pressure from the supply pipe 8 by the pump 2, and are injected from the injection part 4 through the hollow part 2' of the stirring shaft 2, the hollow part 3' of the stirring blade 3, and the check valve I4. It cleans the inside of tank 1, and also performs mixing, gas-liquid reactions, etc., and cleans and mixes inside tank 1.

Conditions such as gas-liquid reactions can be visually checked through a viewing window 9 provided on the side wall.

The liquid in the tank or the cleaning liquid after the reaction is automatically discharged to the outside of the tank by opening a discharge port 6 provided at the bottom of the tank.

In addition, in the figure, 5 is a supply port for supplying raw materials and auxiliary raw materials into the tank 1, and 10 is a gas vent port.

Since the present embodiment is configured as described above, its operation will be explained. The portable tank 1 loaded on a portable device (not shown) receives raw materials and auxiliary raw materials from the supply port 5 at the raw material station. After the fixed amount is automatically added, the liquid is moved to the power station q, automatically connected to a power source (not shown), heated or cooled if necessary, and further connected to the drive device 7. The stirring shaft 2 is moved up and down one rotation to stir the liquid in the tank. At this time, the stirring blade 3 connected and fixed to the lower end of the stirring shaft 2 repeats rotation, normal rotation, reversal, and rotation, and moves up and down, so that the stirring effect is further improved.

In addition, if it is necessary to add a new mixed liquid and cause a reaction, or to add gas, etc., these supply devices and the supply pipe 8 are automatically connected independently, and the pump 12 is used to pump the stirring shaft 2. Hollow part 3' of stirring blade 3 via hollow part inner pipe 2'
is injected from the injection part 4 attached to the stirring blade 3 through the check valve 14, thereby efficiently mixing or gas-liquid reaction.

When the prescribed stirring 1 reaction is completed, the tank 1 is moved to a sampling station where the liquid in the tank is automatically sampled and inspected, and further moved to a product discharge station where a discharge port 6 and a discharge device (not shown) are connected. It will connect automatically and the liquid in the tank will be drained. Subsequently, the tank 1 is moved to the cleaning station, and the power source outside the tank is automatically connected to the drive device 7, and furthermore, the supply pipe 8 and the cleaning liquid pipe (not shown) are automatically connected.

The cleaning liquid is supplied to the supply pipe 8 from a cleaning liquid pipe connected to the supply pipe 8, is pumped by a pump 12, is forced to be sent to the hollow inner tube 2' of the stirring shaft 2 via the bellows 11, and is then sent to the hollow part 3' of the stirring blade 3. The liquid enters the tank, passes through the check valve 14, and is injected from the injection unit 4 to clean the inside of the tank. However, since the agitation shaft 2 moves up and down and rotates, the injection pressure from the injection unit 4 of the cleaning liquid and the agitation are The centrifugal force generated by the rotation of the shaft 2 cleans every corner of the tank 1.

It is also possible to divide the cleaning into two stages as necessary, using a chemical solution with a high cleaning effect as the cleaning solution in the -stage, and using a finishing fluid as the second stage.

In some cases, it is also possible to use steam.

When a predetermined amount of the cleaning liquid has accumulated in the tank 1, the supply of the cleaning liquid is stopped and only the rotation of the stirring blades 3 is continued, thereby cleaning the inside of the tank 1 even more completely. Since the stirring blade 3 is provided with a check valve 14, the liquid in the tank flows through the injection part 4 to the stirring shaft 2.
can be prevented from entering the hollow portion 2'.

In addition, even if the liquid in the tank seeps into the injection part 4, the cleaning liquid is pumped during cleaning and is sprayed from the injection part 4, and the stirring blade 3
Due to the centrifugal force caused by the rotation of the tank, the soaked liquid in the tank is completely scattered from the injection part 4.

Since the rotation of the stirring shaft 2 described above can be changed arbitrarily by the drive device 7, it is preferable to rotate the stirring shaft 2 faster during cleaning than during stirring in order to improve the cleaning effect.

Further, a gas vent 10 is provided on the tank wall, and the gas filling the tank 1 is discharged to the outside of the tank via processing equipment (not shown).

Stirring tank 2. Stirring blade 3. Structure and material of the injection part 4.

All shapes are designed to withstand pressure feeding of cleaning liquid, mixed liquid, gas, gas, etc., and are designed taking into account the viscosity of the liquid in the tank, degree of adhesion, and reaction conditions. The number and shape of the plates can be arbitrarily designed depending on the properties of the liquid in the tank, reaction conditions, etc.

Furthermore, in the above embodiments, a portable tank was described, but it is also possible to apply the invention to a fixed tank. In this case, the supply port, discharge port, drive device, supply pipe, etc. are fixedly connected to respective equipment outside the tank.

In addition to the functions described above, the stirring blade 3 having the injection part can also be applied to bubble stirring, air lane 3 ventilation stirring, and gas absorption.

As explained above, in the batch type continuous production method using a portable tank explained as an example, in addition to moving the tank, supplying raw materials, discharging products, etc., the vertical movement and rotation of the stirring shaft, cleaning liquid, mixed liquid, gas, gas, etc. All feeding is controlled by a central control unit and is completely automatic under its direction.

[Effects of the Invention] The multi-purpose stirring tank according to the present invention is a stirring tank with a high stirring effect using a stirring blade connected and fixed to a stirring shaft that can freely move up and down once, and allows cleaning liquid, mixed liquid, and gas to be supplied from the outside of the tank. This is a multi-purpose stirring tank which cleans the inside of the tank by independently pumping gases, etc. and injecting them from the injection parts attached to the above-mentioned stirring blades, and also has functions such as mixing and gas-liquid reactions. Therefore, it is especially suitable as a tank in a low-volume, high-mix production system, and has a significant effect in terms of increasing the efficiency of productivity work.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall explanatory diagram of the tank, Fig. 2 is a sectional view taken along line x-x' in Fig. 1, and Fig. 3 (a) is an enlarged view of an example of the injection part of the stirring blade. The explanatory diagram, FIG. 3 (II) is an enlarged diagram of another example similar to (A). 1: Tank 3: Stirring blade 7: Drive device 2: Stirring shaft 4: Injection part 8...supply pipe

Claims (1)

[Claims] A stirring shaft having a hollow part in which hollow stirring blades each having a plurality of injection parts are connected is provided in the stirring tank, and the stirring shaft can be raised and lowered freely, and cleaning liquid, A multi-purpose stirring tank characterized in that a mixed liquid, gas, gas, etc. is force-fed and injected from the injection part of the stirring blade.