JP2811427B2 - Liquid preparation take-out mechanism of stirrer using stir plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid preparation taking-out mechanism of a stirrer using a stirrer plate, and more particularly, to a stirrer attached to a stirrer having a function of transferring a liquid to complete a stir-mixing process. The liquid can be sucked out and taken out of the container.If necessary, stop the suction operation before the liquid level drops to the suction port of the stir plate so as not to cause empty suction. The present invention relates to a liquid preparation taking-out mechanism of a stirrer using a stirring plate capable of preventing air from being mixed into a liquid flow path.

[0002]

2. Description of the Related Art Casting resin in laminating, coating and casting.
n) Or, in the process of preparing a printing ink or the like, there is no ready-made solution that meets the purpose, and a step of preparing these solutions is added. Therefore,
The working fluid required for each of these processes is prepared by mixing and stirring a plurality of liquid agents (for example, a synthetic resin solution, a diluting solution, a curing solution, etc.) at a fixed ratio. When using, it is not possible to charge a large amount of working fluid. This is because, over time, the reaction of the curing agent may proceed, resulting in deterioration or hardening to an unusable state. For this reason, in the preparation of a working fluid using a curing agent, a method of repeatedly preparing a relatively small amount of a working fluid in a range where the property does not change is adopted.

In the case where the working fluid is stirred and adjusted little by little within a range in which the property does not change in the working fluid,
Unless the amount of the liquids to be mixed is strict, the stirring container is placed on the measuring instrument to perform stirring and liquid preparation in order to hinder homogeneity. Therefore, when the liquid preparation is completed,
It was necessary to remove the container containing the processing liquid from the measuring instrument and move it to a predetermined place to transfer it.

[0004] However, it is disadvantageous in terms of work efficiency to transport and transfer the containers containing the processing liquid one by one. Therefore, a device was studied in which, when the liquid preparation was completed, the processing liquid in the container was sucked by a pump and taken out to a necessary place while the stirring container was placed on the measuring instrument. However, since a stirring plate that stirs and stirs the contained liquid agent is provided in the stirring container, if a suction pipe is permanently installed in the stirring container, a problem occurs. It is also inefficient to drive the pump by inserting the suction pipe into the container each time, and the vicinity is contaminated by dripping.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art for extracting a working fluid for stirring and preparing a small lot of a working fluid which is liable to change in properties over time. It does not have any special pipes, valves, or other protruding parts inside the container, and the liquid extraction pipe efficiently removes liquid from the container without interfering with the stirring mechanism or the raw material liquid injection pipe. The purpose is to provide a new mechanism that can do it.

Another object of the present invention is to provide a high-performance stirring apparatus which has a good liquid-removing function, a simple stirring space in a container, and a very excellent stirring effect.

Further, another object of the present invention is to prevent the inflow of air into a pipe (liquid preparation flow path) for sucking out the processing liquid whose stirring and liquid preparation has been completed, as desired, and to provide a pipe for the processing liquid. An object of the present invention is to provide a new mechanism for removing a liquid preparation, which can prevent hardening in the inside.

[0008]

Means adopted by the present inventor to solve the above technical problem will be described as follows.

That is, according to the present invention, a container accommodating a liquid to be agitated and a stirring plate disposed in the container so as to be inserted therein can be moved relative to each other. Is provided, and a suction port is provided at the lower end of the tuning liquid flow path, and a stirring plate that attempts to take out the liquid in the container to the outside by making the internal pressure of the liquid adjusting flow path a negative pressure is used as a suction straw means. There is a characteristic in the technical idea.

The "container" that can be employed in the present invention may be a bottomed cylindrical body. However, in the case where a type in which the stirring action is generated by relative rotation instead of advancing and retreating movement of the stirring plate is used. The bottom cylinder is suitable because it is difficult for the stored liquid to stagnate during stirring.

The "stirring plate" may be flat, paddle-shaped, or spiral-shaped as long as it can impart stirring resistance to the liquid in the container. It is also possible to adopt a material which can be stirred uniformly without forming stagnation in the container as much as possible.

Next, in the present invention, the "container" and the "stirring plate" are configured to be relatively movable. Here, the relative movement refers to the following cases. When the container is moved and the stirring plate is placed in a stationary state. In the case of adopting such a configuration, for example, when injecting various liquid materials from above the container, the prepared liquid material can be injected without adhering to an inadvertent portion of the stirring plate, thereby causing a loss of the prepared liquid material and an error in mixing. Can be prevented. When the container is installed stationary and the stir plate is arranged to perform the required movement. When such a configuration is employed, the structure of the portion for supporting the container can be simplified as compared with the case where the above-described rotation method is employed, which is advantageous when a relatively large container is used. When both the container and the stirring plate are moved so that there is a relative movement difference between them. When such a configuration is adopted, the relative speed between the container and the stirring plate can be increased, so that the stirring resistance is increased and the stirring efficiency is improved.

[0013] In this case, the relative movement between the "container" and the "stirring plate" is most advantageously performed by using a rotational movement, so that the structure and the space can be simplified. Energy can also be saved.

Further, according to the present invention, if necessary, the liquid suction operation by the liquid preparation flow path of the stirring plate is stopped before the liquid level in the container falls below the liquid preparation flow path suction port of the stirring plate. It is possible to prevent air from being mixed into the liquid flow path, for example, to prevent the processing liquid from being hardened in the liquid preparation flow path due to air contact even when the prepared processing liquid contains a curing agent. be able to.

As means for stopping the liquid suction operation before the liquid level falls below the suction port, the amount of liquid in the container is automatically measured by means of an electronic balance or the like on the basis of weight.
When the weight value of the remaining amount of the liquid in the container reaches a predetermined threshold value, it is possible to adopt means for stopping the driving source of the liquid suction operation in conjunction with the threshold value. In this case, the threshold value is set based on the specific gravity of the working fluid to be prepared.

As another means for stopping the liquid suction operation before the liquid level falls below the suction port, a liquid level sensor is provided in the container or on the stirring plate, and the liquid level sensor is provided with a predetermined level. When the liquid level is detected, it is possible to adopt means for stopping the driving source of the liquid suction operation in conjunction with the detection.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings.

[First Embodiment] A first embodiment of the present invention is shown in FIGS. In the first embodiment, wing-like plates 112 are protruded from the one end of the straight pipe portion 111 to the predetermined portion along the longitudinal direction so as to face outward toward the outside. Thus, the stirring plate 11 is configured. And a straight pipe in this stirring plate 11
The upper end side of 111 is connected to a take-out pipe that is bent in an inverted L shape and penetrates and fixed to the gantry 14. This export pipe is
The stirring plate 11 also serves as a support member 12 that is supported on a gantry 14 and held in a state inserted into a container 13. In the present embodiment, the upper end of the straight pipe 111 and the support member 12 are connected to each other by a coupling 121 in a communicating state. The inner space of the straight pipe 111 of the stirring plate 11 and the inner space of the support member 12 formed of a take-out pipe constitute a liquid preparation channel F, and the lower end of the straight pipe 111, that is, the stirring plate 11 A suction port 11a is opened at a position where the lower end of the container is close to the bottom of the container 13, and
An outlet 12a is connected to the lower end of the support member 12 penetrating through.

The outlet in the liquid preparation channel F
12a is connected to a pump 143 via a pipe 142.
Therefore, when the pump 143 is operated, the working liquid mixed and stirred in the container 13 is sucked from the suction port 11 a at the tip of the pipe 111 of the stirring plate 11, and the outlet port 12 at the lower end of the support member 12.
It is sent to the pipe 142 via a.

On the other hand, the container 13 in the present embodiment has a bottomed cylindrical shape and has a turntable 14
4 is fixedly held on. The fixing of the container 13 is performed by fixing the opposing arc-shaped fixing members 144a and 144 mounted on the turntable 144.
During a, the lower part of the container 13 is fitted so as not to move. Further, the turntable 144 is drivingly connected to a motor (not shown) via a rotating shaft 144b extending downward, and the table 144 rotates when the motor rotates. Above the container 13, a plurality of liquid injection valves (not shown) are arranged. From these liquid injection valves, different types of liquid agents (for example,
A synthetic resin liquid, a diluting liquid, and a curing liquid) are dropped into the container 13. Then, in the container 13, the required amount of these plural kinds of liquids is received, and when the motor is driven to rotate the turntable 144 back and forth, the container 13 rotates relative to the stirring plate 11 together with the turntable 144 and bubbles Without getting caught in the container
The liquid in 13 is agitated. When the mixing is completed,
By driving the pump 143, the working fluid in the container 13 that has been stirred and mixed can be sucked out to the pipe 142 through the liquid preparation flow path F and sent to a predetermined location.

[Second Embodiment] Next, a second embodiment of the present invention is shown in FIGS. In the second embodiment, a container 23 is fixed on a gantry 24, and the stirring plate 21 is rotated. To explain in more detail, the column-shaped support member 22 erected beside the container 23,
The pipe-shaped stirring plate rotating shaft 212 is connected in an inclined state, and the rotating shaft 212 is inserted and held in the container 23 in the inserted state. An agitated impeller 211 having an airfoil shape is fixed around the body of the rotary shaft 212 inserted into the container 23.
The stirring plate 21 is constituted by the 211 and the rotating shaft 212.
A motor 214 is connected to the rear end of the rotating shaft 212, and the rotating shaft 212 is rotated by the operation of the motor 214. Incidentally, the opening at the lower end of the rotating shaft 212 is the suction port 21a of the stirring plate 21 in the present embodiment. In the second embodiment, the liquid in the stirring container 23 can be stirred by operating the motor 214 to rotate the rotating shaft 212 and the stirring plate 21. Needless to say, valves (not shown) may be arranged in line above the stirring vessel 23, and various kinds of liquids may be injected into the vessel 23 in required amounts, and then stirred.

On the other hand, a connecting nipple 213 is provided at a required portion near the center of the stirring plate rotating shaft 212 in the present embodiment, and a connecting nipple 213 is provided with a check valve (not shown). ing. And this connecting nipple
By connecting the joint tube 222 disposed at the tip of the flexible tube 221 taken out of the support member 22 to the flexible tube 213, a conduit from the rotary shaft 212 to the flexible tube 221 is formed. The other end of the flexible pipe 221 serves as a delivery port 22a, and is connected to a pipe 242 having a pump 243 through an upper plate 241 of the gantry 24. Thus, if this pump 243 is operated, the liquid in the container 23
Piping 2 from the stirring plate 21 through the rotating shaft 212 and the flexible tube 221
Can be taken out to 42. The connecting nipple 213 and the joint pipe 222 between the rotating shaft 212 and the flexible tube 221 are detached when the rotating shaft 212 is rotated, and are fitted only when taking out the liquid. The liquid preparation channel F of the present embodiment includes a rotating shaft 212 and a flexible tube 221.

In the second embodiment, there is no turntable on the gantry 24, and the agitating vessel 23 is installed between the opposed arc-shaped fixtures 24a, 24a mounted directly on the gantry 24. .

[Third Embodiment] Furthermore, the third embodiment of the present invention
Is shown in FIGS. 7 and 8. The stirrer and the liquid preparation take-out mechanism in the third embodiment are basically the same as those in the first embodiment in terms of hardware. The description given shall apply mutatis mutandis.

In the third embodiment, the mixing is performed in the container 13 by using the weight value signal output from the electronic balance 4 disposed below the turntable 144 on which the container 13 is placed. It is characterized in that the level of the machining fluid is controlled.

That is, the suction port 11a opened near the lower end of the agitating plate 11 inserted into the container 13 is used to discharge air based on the specific gravity of the stored liquid at the liquid level H at the limit where the suction port 11a is immersed in the liquid. The amount of residual liquid at risk of aspiration is measured in advance, and the value obtained by adding ΔH to the safety level to the limit liquid level H is used as a threshold value for stopping the liquid suction / suction operation.
(See FIG. 8). Thus, the container 13
The controller sets a stop signal to stop the pump 143 when the pump 143 continues the suction operation and reaches a predetermined threshold value.
Incidentally, since the container 13 used in the third embodiment is a cylindrical body having a bottom, the remaining liquid amount (V) at which there is a risk of sucking air and the remaining liquid amount at which liquid suction should be stopped are set. The corresponding threshold value (V ') is shown by the following equation. In the formula, the symbol π is a circular constant, D is the inner diameter of the container 11, and the residual liquid amount V is an inverse value of the specific gravity of the liquid. V = πD ² H / 4 V ′ = πD ² (H + ΔH) / 4 If configured as in the third embodiment, the liquid preparation flow path F
The air is not sucked into the inside, and the operation of stopping the liquid suction operation just before sucking the air is repeated, and the stirring of the liquid agent is continued while the mixing is continued. It is possible to avoid the obstacle that the resin hardens and causes flow inhibition. Therefore, even in the case where the working fluid is stirred and mixed using the isocyanate-based liquid, without causing a flow path failure, the stirrer can be continuously operated for a long period of time, and when the device is stopped. Also in the above, there is an advantage that the disassembly and cleaning can be performed extremely easily because no solidified substance adheres to the inside of the liquid preparation flow path F or the joint of the pipes.

[0027]

EXAMPLE The liquid preparation removal mechanism of the stirring device used in the third embodiment was operated to mix and mix the following liquids, and a removal processing experiment was performed. a. Stirred liquid agent Polyester resin (solid content 40.0%, viscosity 700cp) 150 parts by weight Polyisocyanate (solids content 52.5%, viscosity 20cp) 12 parts by weight Ethyl acetate 103 parts by weight b. Working fluid after mixing (solid content 25.0%, viscosity 48c
p) The polyisocyanate of the above a is a curing agent, and the isocyanate group (RNCO group) of the polyisocyanate is very reactive. Therefore, when it comes into contact with air, the polyisocyanate immediately reacts at room temperature to cure. is there. c. Operation cycle Approx. 5 minutes 15 seconds d. Stir time 60 seconds e. Stirring speed 120 rpm

Using the stirrer used in the third embodiment,
After performing continuous operation for a week, no solid matter was attached at all in the liquid preparation channel F or at the seams of the pipes, and the liquid could be smoothly taken out. When an experiment similar to the above was performed without performing control, liquid removal became impossible in one week.

Although specific examples of the embodiments in the specification of the present application are almost as described above, the present invention is not limited to only the above-described examples, and various modifications may be made within the description of the claims. Deformation is possible.

For example, in a stirrer of a type in which a stirrer is rotated, as shown in FIG. 9, a check valve 3 of a ball valve mechanism is incorporated in a suction port of a stirrer plate to prevent backflow of liquid. Can be. Further, the stirring container of the apparatus can be made detachable so that various general-purpose containers can be used as the stirring container. Furthermore, the electronic balance in the third embodiment may be used to automatically measure the injection amount of various liquid materials from a change in the weight of the container, and various values may be obtained using the weight value signal output from the electronic balance 4. Feedback control is also possible.

[0031]

As described above with reference to the embodiments,
ADVANTAGE OF THE INVENTION According to this invention, a projecting object, such as a special pipe and a valve, is not attached inside a container, and the liquid from the container can be efficiently discharged from the container without interference with the stirring mechanism or the raw material liquid injection pipe. It is possible to take out
It has a good liquid extraction function, a simple stirring space in the container and good stirring performance. In addition, when desired, it is possible to effectively prevent the consolidation of the working fluid in the pipeline. It can be said that the utility value of is very high.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an appearance of a main part according to a first embodiment of the present invention.

FIG. 2 is an explanatory partial cross-sectional view illustrating a use state of the device according to the first embodiment of the present invention.

FIG. 3 is an explanatory partial cross-sectional view illustrating a use state of the device according to the first embodiment of the present invention.

FIG. 4 is a perspective view illustrating an appearance of a main part according to a second embodiment of the present invention.

FIG. 5 is a partial cross-sectional explanatory view illustrating a use state according to a second embodiment of the present invention.

FIG. 6 is a partial cross-sectional explanatory view showing a use state in a second embodiment of the present invention.

FIG. 7 is an explanatory sectional view of a main part showing an internal structure of an apparatus used in a third embodiment of the present invention.

FIG. 8 is a block diagram schematically showing a stop signal generation circuit for stopping a liquid suction operation in a third embodiment of the present invention.

FIG. 9 is a cross-sectional view illustrating a modified example of a stirring plate that can be adopted in the present invention.

[Explanation of symbols]

 11 Stirring plate 11a Suction port 12 Support member 12a Liquid outlet 13 Container 21 Stirring plate 21a Suction port 22 Support member 22a Liquid outlet 23 Container 3 Check valve 4 Electronic balance 5 Controller (CPU) F

Claims (6)

(57) [Claims] 1. A container for containing a liquid to be stirred and a stirring plate inserted in the container so as to be able to move relative to each other, and a liquid preparation channel is provided in the stirring plate. A suction port is provided at the lower end of the tuning liquid flow path, and the stirring plate is characterized in that the liquid in the container is taken out to the outside by making the internal pressure of the liquid adjusting flow path a negative pressure. A liquid extraction mechanism of the stirring device used. 2. A stirrer for stir adjusting a stir plate inserted in a container containing a liquid to be stirred by relative movement with respect to the container, wherein the stir plate is provided outside the container. The mixing plate is supported by the support member and inserted into the container, and the stirring plate is provided with a liquid preparation channel therein, and the suction port of the liquid preparation channel is disposed near the bottom of the container. On the other hand, a liquid preparation delivery channel is provided in the support member, and a liquid supply outlet of the liquid preparation delivery channel communicates with the solution preparation channel of the stirring plate to agitate the liquid in the container. A liquid dispensing and removing mechanism of a stirring device using a stirring plate, wherein the liquid is taken out from the outside through the liquid sending port by sucking from a suction port of the plate. 3. The stirring plate is fixed in an immovable state, whereas the container containing the liquid to be stirred is placed on a rotatable turntable, and the stirring plate and the stirring container are relatively positioned. 3. The liquid preparation removal mechanism of a stirrer using a stirrer plate according to claim 1 or 2, which can be rotated. 4. The stirring vessel is installed in a stationary state, while the stirring plate is connected to a rotating shaft so that the stirring plate can be driven to rotate in the stirring vessel and the rotating shaft of the stirring plate is rotated. Is configured in the shape of a pipe, the pipe-shaped space of the rotary shaft functions as a liquid preparation flow path,
3. The liquid preparation taking-out mechanism of a stirring device using a stirring plate according to any one of 3. 5. The liquid suction operation by the liquid adjusting flow path of the stirring plate can be stopped before the liquid level falls below the suction port of the liquid adjusting flow path. 3. The liquid preparation taking-out mechanism of a stirrer using a stirrer plate according to item 1. 6. The liquid amount in the container is automatically measured as a weight value by an electronic balance, and when the weight value of the remaining amount of the liquid in the container reaches a predetermined threshold value, the liquid suction operation is stopped. The liquid level according to any one of claims 1 to 5, wherein the liquid level is configured not to be lower than the suction port of the liquid preparation channel.
A liquid preparation taking-out mechanism of a stirring device using a stirring plate.