JPH0763598B2 - Operation method of stirring equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to various processes involving stirring such as dissolution, stirring, mixing, distribution and emulsification of materials in a batch type in the fields of cosmetics, pharmaceuticals, hygiene products, foods, chemicals and the like. The present invention relates to a method of operating a stirring facility used to perform

[0002]

2. Description of the Related Art As a means for performing each of the above-mentioned processes, a dedicated facility for each of the above-mentioned processes is provided and operated at each factory, and if the raw materials and products are different, the facilities are slightly modified and operated. It is generally done.

In recent years, even in various treatments involving stirring,
Improvements have been made to reduce labor, increase efficiency, and improve quality, but the raw materials and products used in these processes are more diverse than before, so the conditions that govern the system are also diverse. That there is a wide range of physical properties of raw materials and products,
Because of this, there are many cases where conventional equipment cannot handle it.

Recently, a high-speed agitator for performing advanced agitation work has been developed. However, it is costly to prepare an agitator suitable for the processing content each time. In the case of production, this tendency becomes remarkable.

[0005]

DISCLOSURE OF THE INVENTION The present invention makes it possible to use an optimum stirrer for processing work and to operate with less idle time when carrying out batch processing of various processes involving stirring. It is an object of the present invention to obtain a means capable of efficiently performing an optimum stirring work according to various orders of many customers.

[0006]

One of the means for solving the above problems in the present invention is, as described in claim 1, a large number of stirring vessels and washing vessels having upward openings, and the stirring vessels are circulated and moved. A transport path that can be used, a standby path for the cleaning container, a stirring station that includes a variety of stirrers having a downward stirring section that is disposed along the transport path, and a stirrer that is disposed on the downstream side of the transport path. A container discharging station and a washing station are provided, and the agitation vessel is moved along the transfer path to sequentially perform the necessary steps in the required station and the washing vessel, and the step with the longest working time is stopped for the shortest time. It is characterized by changing to the next batch in time.

Further, as described in claim 2, the means for more efficiently carrying out the means of claim 1 is provided with a plurality of agitators for carrying out the process with the longest working time in the means of claim 1. , Is to add means characterized by operating them in parallel by shifting the phases.

[0008]

In the first aspect of the present invention, the plurality of agitating vessels that have received the raw materials return to their original positions after performing necessary work in the optimum agitator, discharge station and cleaning station, and repeat this work. Since the process having the longest working time among all the processes is performed in the shortest down time, the down time of other devices is shortened and the overall operation is efficiently performed.

According to the second aspect of the present invention, since the process having the longest required time is performed in parallel with a short down time with a phase shift, the down time of the entire operating equipment becomes extremely short.

[0010]

Embodiments Embodiments will be described below with reference to the drawings. FIG. 1 is a schematic diagram for explaining the arrangement of each device, and the vertical relationship of the stirrer and the like is shown irrespective of the actual situation. In FIG. 1, 1 is a stirring facility, 2 is a raw material metering unit, 3 is a raw material charging unit, and 4 is a transport path. The transport path 4 is a path for moving the stirring container 5 and the cleaning container 6, and a large number of branch paths 4a extend from a branch point 4b to a work position. The stirring container 5 and the cleaning container 6 are placed on a moving carriage and can move in both forward and backward directions on the transport path 4, and the turntable provided at the branch point 4b switches to the desired branch path 4a to reach the working position. It is designed so that work is carried out in sequence or by interruption.

Further, 7 is a standby path for the washing container, and 8 is a standby path for the agitation container, which is adapted to cope with an increase in the number of batches. The stirring container 5 and the cleaning container 6 may be moved by casters provided on the respective containers 5 and 6 instead of using a moving carriage.

Agitator station 9 along the transport path 4,
A discharge station 10 and a cleaning station 11 are provided. The stirrer station 9, a number of agitator 9 ₁
9n is provided so as to be able to move up and down with the stirring blade facing downward, and the discharge station 10 is provided with receiving containers 10 ₁ , 10 _2, ... For receiving the products processed by the stirrer station 9.
2, the washing station 11 is provided with a plurality of container washing machines 11 ₁ , 11 _2, ... Among the agitators 9 _{1 to} 9 n, a plurality of models of the same type having a long usage time are prepared, and the required number of receiving containers 10 ₁ , 10 _2, ... And container washing machines 11 ₁ , 11 ₂ ... Are prepared.

2 (a) to 2 (f) show the agitators 9 ₁ to 9
9n shows an example of a stirrer used as 9n.
Although a to 9f are attached, various agitators other than this are used. Each of the agitators 9a to 9f has a motor 15 on the partition plate 14.
And the stirring unit 16 is driven by the motor 15. Further, in the one that stirs while heating or cooling the raw material, a pair of circulation ports 17 for letting in and out a heat medium such as hot water and cold water are provided, A degassing tube 18 is provided.

The stirrer 9a is a heating stirrer and its stirrer 1
Reference numeral 6 is a double-screw hollow wing 16a, and the hot water passing through the flow port is circulated through the hollow wing 16a to reduce the viscosity of the raw material.

The stirrer 9b is for dissolving and dispersing, and has a stirring part 16 provided with rotary blades 16b ₁ and a baffle plate 16b ₂ fixed to the partition plate 14. The baffle plate 16b ₂ prevents the raw material from idling with the rotary blade 16b ₁ .

The stirrer 9c is used for emulsifying a low-viscosity raw material, and the stirrer 16 includes a mixer 16c ₁ composed of a stator and a high-speed rotor, and a reversing plate 16c ₂ .
The stator and the reversal plate 16c ₂ are fixed to the fixed bar 16c ₃ , and the high speed rotary blades are fixed to the rotary shaft 16c ₄ . The raw material agitated by the mixer 16c ₁ is urged upward with agitation, and the ascending flow is diverted downward by the reversing plate 16c ₄ and circulated.

The agitator 9d is a high viscosity raw material intended to vacuum emulsification, the stirring portion 16 comprises the same mixer 16d ₁ and the mixer 16c _1. Further, a fixed paddle 16d ₂ is fixed by a fixed bar, and a rotating paddle 16d ₄ and a scraper 15d ₅ are provided on a frame 16d ₃ which rotates at a low speed.
This agitator 9d can rotate the mixer 16d ₁ and the frame 16d ₃ independently or simultaneously, and can perform vacuum agitation by degassing by the deaeration pipe 18, so that multi-purpose agitation can be performed depending on the material to be processed.

The stirrer 9e is for vacuum-dispersing or emulsifying the raw material ranging from low viscosity to high viscosity.
Are three working parts, namely the rotor 16e ₁ and the mixer 1.
6e ₂ and a rotating paddle 16e ₃ which are either alone or 2
More than one can be operated at the same time and can be used for multiple purposes.

The stirrer 9f is a cooling stirrer, and the stirrer 16 has a hollow blade 16f ₂ having the same structure as the hollow blade 16a.
It has a large number of scrapers 16f ₂ on the outer periphery thereof, and is convenient for scraping off the raw material that becomes highly viscous by cooling from the inner surface of the container.

Next, FIG. 3 shows the stirring vessel 5, which is movable and has a hollow wall 20 and an inlet 20a and an outlet 20b of hot water communicating with the hollow wall 20.
It can be combined with a to 9f. When stirring the raw material while heating, warm water is circulated, and when heating is not necessary, stirring is performed without circulation. When this stirring container is combined with the heating stirrer 9a, the heating effect is highest.

FIG. 4 shows a movable stirring container 5 for cooling, which has a hollow wall 22 having a spiral passage and an inlet 22 for cold water.
a has an outlet 22b and has the highest cooling effect when combined with the stirrer 9f, but can also be combined with other stirrers 9a to 9e.

Next, FIG. 5 shows the cleaning container 6, which has a double structure of a porous inner tank 23a and an outer tank 23b, and the ultrasonic generator 24 faces the inner tank 23a. A washing water inlet 25d and an outlet 25 are provided in the outer tank 23b.
b is provided.

The washing container 6 is agitated by the agitating section 16 and then left to stand, so that the raw material is altered or the agitating section 16 is used.
When the stirring section 16 is likely to stick, the stirring section 16 is used to wash the stirring section 16, and the stirring section 16 is put in the washing container 6 in which the washing water is circulated, and the ultrasonic generator 24 is urged to attach the deposits. Wash off.

FIG. 6 and subsequent figures are examples showing the stirring work of the apparatus, in which the vertical axis shows the type of process and the horizontal axis shows the required time. In the process, charging of the raw material into the stirring container 5, heating, stirring, Includes steps such as cooling, discharging and washing of the stirring container and washing of the stirring section of the stirrer.The stirring step includes vacuuming, stirring, dispersing, releasing vacuum, and the cooling step before and after cooling. A vacuum releasing step is included as necessary.

In FIG. 6, the work of A _{1 to} A ₄ shows a batch process for obtaining the product A, and a feeding process a of two kinds of raw materials a
₁ , a ₂ , heating and agitation process a ₃ by agitator 9 a, agitator 9
The vacuum stirring step a ₄ by d, the cooling and stirring step a ₅ by the stirrer 9f, the discharging step a ₆ , and the container cleaning step a ₇ are performed.

In the conventional operation method, the work A ₁ is completed and then the work A ₄ is performed. Since one cycle of the work A ₁ is 1.4 hours and two cycles are about 3 hours,
Only 4 to 5 batches of work can be done per day. Work A ₁ ,
There is a large downtime between A ₄ .

The present invention utilizes the rest time,
Prepare two separate stirring containers 5 and perform work A between work A ₁ and work A _4.
2 and A ₃ are interrupted. By doing this,
It can be operated in one-third cycle and the production amount is 3
Double. Since the cooling and stirring step a ₅ requires the longest time in the operations A _{1 to} A _4, the number of operations can be reduced by shortening the pause time between the cooling and stirring steps a ₅ and a ₅ as t _1. Will increase.

If the material attached to the stirrer deteriorates by the next work, the washing step W ₁ is inserted between the steps a ₄ and a ₄ in FIG. 6, and the stirring part 16 is put in the washing container 6. To wash. If the raw material does not deteriorate, the washing step such as between steps a ₃ and a ₅ is not performed.

Next, the embodiment of FIG. 7 is an example in which the same amount of the product A as that of the embodiment of FIG.
Was prepared, complete the A ₁ to A ₄ in the same manner as FIG. 6 in four stirred vessel 5, the work A ₁ to A ₄ and the other four stirred vessel 5 by shifting the half cycle phase A It does the work of ₅ ~A _8.

In this case, the cooling steps a ₅ , a ₅ ... Which require the longest time are performed in parallel, and in the raw material charging step and the other steps a ₃ , a ₄ , a ₆ , a ₇ , for example, t ₂ , t 5, etc. _Since only a short downtime shown by ₃ ...

Next, the embodiment of FIG. 8 shows means for batch processing three different products A, B and C.
For the product A, work A ₁ including the same steps a _{1 to} a ₇ as in FIGS. 6 and 7 is performed. For the product B, the raw material charging steps b ₁ and b ₂ , the powder melting step b ₃ , the heating and stirring step b ₄ , the raw material adding step b ₅ , the vacuum stirring step b ₆ , the cooling and stirring step b ₇ ,
Work B ₁ is performed in the order of discharging step b ₈ and container cleaning step b ₉ .

Next, for the product C, the steps c _{1 to} c ₇ are adopted and the work C ₁ is performed. The work C ₁ passes through the same route as the above a _{1 to} a ₇ , but is different from the work A ₁ only in the processing time, and is performed alternately with the work A ₁ . The cleaning steps W _{21 to} W ₂₃ are performed during the heating and stirring step, and the cleaning step W is performed during the vacuum stirring step.
_{31 to} W ₃₃ , and washing steps W _{41 to} W ₄₃ are interposed between the cooling and stirring steps, and in the cooling and stirring step that requires the longest working time, the work including the cleaning work is continued in the shortest down time.

As for the time required for each work, the work A ₁ is 1.
4 hours, the work B ₁ is 2.7 hours, the work C ₁ is 2.05 hours, and the total time is 2.85 hours. By combining the three kinds of work A ₁ , B ₁ , and C ₁ in this way, the time required for the longest work B ₁ is 2.75, which is slightly longer than 2.7 hours.
You can do all the work in time. Moreover, since the second work A ₂ can be started after 2.1 hours, the equipment can be operated at a high operation rate.

[0034]

As described above, according to the first aspect of the present invention, the process that requires the longest working time is replaced with the shortest down time. Therefore, the operating rate of the equipment is increased, and the optimum device is the same type. Or, it has an advantage that different kinds of products can be efficiently stirred.

Further, in the invention of claim 2, the process requiring the longest working time is replaced with the shortest down time, and a plurality of agitators used for the process are provided to operate in parallel by shifting the phases. Therefore, there is an advantage that the down time of the apparatus other than the stirrer can be shortened and the operation rate of the stirring equipment can be further increased.

[Brief description of drawings]

FIG. 1 is a layout diagram of equipment for carrying out the present invention.

[Fig. 2] Front view of various agitators

FIG. 3 is a cross-sectional view of a stirring container

FIG. 4 is a sectional view of another stirring container.

FIG. 5 is a sectional view of the cleaning container

FIG. 6 is a process chart showing an embodiment of the present invention.

FIG. 7 is a process chart showing another embodiment of the present invention.

FIG. 8 is a process chart showing still another embodiment of the present invention.

[Explanation of symbols]

1 stirring equipment 3 material injection unit 4 transporting path 5 stirred vessel 6 washing container 7 cleaning container waiting path 8 a stirred vessel waiting path 9 agitator station 9 ₁ ~9n, 9a~9f stirrer 10 discharge station 11 a washing station 16 stirring part A , B, C products

Claims (2)

[Claims] 1. A large number of agitating vessels and washing vessels having upward openings, and a transport path through which the agitating vessels can be circulated and moved.
A standby path for the cleaning container, a stirring station provided with various stirrers arranged along the transfer path and having a downward stirring section, and a discharge station for the stirring container arranged on the downstream side of the transfer path, and A washing station, wherein the agitating container is moved along the transport path to sequentially perform the necessary steps in the required station and the washing container, and the process with the longest working time is followed by the next batch with the shortest down time. A method for operating a stirring facility, characterized in that the agitation equipment is replaced with a new one. 2. The method for operating stirring equipment according to claim 1, further comprising a plurality of agitators for performing a process having the longest working time, which are operated in parallel by shifting the phases.