JP4188411B1 - Method for stopping stirring deaerator and stirring deaerator - Google Patents

Abstract

A stirring defoaming method and a stirring defoaming device capable of preventing the material from entraining new air and preventing new bubbles from being generated from the material when the stirring defoaming device is stopped. Is to provide.
A method for stopping a stirring and deaeration device is a method of stopping a stirring and deaeration device configured to be able to rotate and revolve a container in which a material M is stored while the inside of the container is decompressed. The rotation angular velocity reduction step (step S104) for reducing the rotation angular velocity of the vessel while reducing the rotation / revolution angular velocity ratio of the vessel, and the inside of the vessel to atmospheric pressure are started after the rotation angular velocity reduction step. Opening to the atmosphere (step S106).
[Selection] Figure 8

Description

  The present invention relates to a method for stopping a stirring deaerator and a stirring deaerator.

  There is known a device for stirring and defoaming the material by rotating and revolving the container in which the material is stored (a rotation and revolution type stirring and defoaming device) (see, for example, Patent Document 1 and Patent Document 2). In this agitation deaerator, the material is agitated (kneaded, mixed, dispersed) by utilizing the centrifugal force acting on the material in the container when the container rotates and revolves, and the bubbles present in the material Can be released for defoaming.

In addition, a device that decompresses the inside of a container during a material processing step is known as a rotation and revolution type stirring and defoaming device (see, for example, Patent Document 3). According to this technique, it becomes possible to degas the material with high accuracy.
JP 2000-271465 A Japanese Patent Laid-Open No. 10-43568 Japanese Patent Laid-Open No. 11-104404

  By the way, even when the material is stirred and defoamed under reduced pressure, in order to take out the material, the rotation and revolution of the container are stopped, and the inside of the container is opened to atmospheric pressure and the stirring and defoaming device is stopped. There is a need. And in order to acquire the material which has been stirred and defoamed with high accuracy, in the process of stopping the stirring and defoaming device, the material should not be entrained with new air, and new bubbles should not be generated from inside the material. It is important to stop the stirring deaerator.

  One aspect of the present invention is a stirring and defoaming method capable of preventing the material from entraining new air and generating new bubbles from the inside of the material when stopping the stirring and defoaming apparatus. And it is providing the stirring deaerator.

(1) The method for stopping the stirring and defoaming apparatus according to the present invention is as follows:
A method of stopping a stirring and defoaming device configured to be able to rotate and revolve a container containing a material in a state where the inside of the container is decompressed,
A rotation angular velocity reduction step of reducing the rotation angular velocity of the container while reducing the rotation / revolution angular velocity ratio of the container;
An atmospheric release step for opening the inside of the container to atmospheric pressure, which is started after the rotation angular velocity reduction step;
including.

  According to the present invention, it is possible to stop the stirring and defoaming device so that the material does not entrain new air and no new bubbles are generated from the inside of the material. Therefore, it is possible to obtain a material that has been stirred and degassed with high accuracy.

(2) In the method for stopping the stirring deaerator,
The atmosphere release step may be started when the rotation angular velocity is a predetermined value or less.

(3) In the method for stopping the stirring deaerator,
The atmosphere release step may be started after the rotation of the container is stopped.

(4) In the method of stopping the stirring and deaerator,
The air release step may be started when a rotation / revolution angular velocity ratio of the container is equal to or less than a predetermined value.

(5) In the method for stopping the stirring deaerator,
The atmosphere release step may be started when the revolution angular velocity of the container is equal to or higher than a predetermined value.

(6) In the method for stopping the stirring deaerator,
The method may further include a revolution angular velocity reduction step of reducing the revolution angular velocity of the container, which is started after the atmospheric release step.

(7) In the method for stopping the stirring deaerator,
The revolution angular velocity reduction step may be started when the atmospheric pressure in the container is equal to or higher than a predetermined value.

(8) In the method for stopping the stirring deaerator,
The revolution angular velocity reduction step may be started after the inside of the container is opened to atmospheric pressure.

(9) The stirring deaerator according to the present invention is
A stirring and defoaming device configured to be capable of rotating and revolving a container containing a material in a state where the inside of the container is decompressed,
Control means for controlling the rotation angular velocity and revolution angular velocity of the container, and the atmospheric pressure in the container;
The control means includes
When stopping the rotation and revolution of the container, the internal pressure of the container is released to atmospheric pressure and the stirring and defoaming device is stopped.
After starting the rotation angular velocity reduction process for reducing the rotation angular velocity while reducing the rotation / revolution angular velocity ratio of the container, an atmosphere release process for opening the inside of the container to atmospheric pressure is started.

  According to the present invention, it is possible to prevent the material from entraining new air and the generation of new bubbles from the inside of the material when stopping, and to obtain a material that has been stirred and degassed with high accuracy. It is possible to provide a stirring and defoaming apparatus that can perform the above operation.

(10) In this stirring deaerator,
The control means is a step of stopping the stirring and defoaming device,
You may start the revolution angular velocity reduction process which reduces the revolution angular velocity of the said container after the said atmosphere release process is started.

  Embodiments to which the present invention is applied will be described below with reference to the drawings. However, the present invention is not limited to the following embodiments, and all configurations described in the following embodiments are not necessarily essential to the present invention. Moreover, this invention shall include what combined the following content freely.

1. First Embodiment Hereinafter, a first embodiment to which the present invention is applied will be described.

(1) Structure of stirring and defoaming apparatus 1 First, the structure of the stirring and defoaming apparatus 1 according to the embodiment to which the present invention is applied will be described. 1-5 is a figure for demonstrating the structure of the stirring defoaming apparatus 1. FIG.

  As shown in FIG. 1, the stirring and defoaming apparatus 1 according to the present embodiment includes a revolution shaft 10 (rotation shaft / main shaft). The revolution shaft 10 is configured to rotate around a virtual straight line. In the present embodiment, as shown in FIG. 1, the revolution shaft 10 is configured to rotate about a virtual straight line (revolution axis L1) extending vertically. However, the revolution shaft 10 can also be configured to rotate around a straight line extending horizontally (not shown).

  As shown in FIG. 1, the stirring and deaerator 1 includes a rotating body 20. The rotating body 20 is fixed to the revolution shaft 10, and is configured to rotate about the revolution axis L1 (as an axis) as the revolution shaft 10 rotates.

  As shown in FIG. 1, the stirring and defoaming apparatus 1 has a container holder 30. The container holder 30 plays a role of holding a storage container 100 described later. Hereinafter, the container holder 30 will be described in detail.

  The container holder 30 is attached to a predetermined position of the rotating body 20 so as to be capable of rotating. In the present embodiment, the container holder 30 is configured to be capable of rotating about an imaginary straight line (spinning axis L2) passing through a predetermined position of the rotating body 20. In the present embodiment, the revolution axis L1 and the rotation axis L2 are straight lines that obliquely intersect at a predetermined angle. More specifically, the stirring deaerator 1 is configured such that the revolution axis L1 and the rotation axis L2 intersect at an angle of 45 degrees. However, as a modification, the stirring and defoaming device can be configured such that the revolution axis of the container holder 30 and the rotation axis are parallel (not shown).

  In the present embodiment, the container holder 30 is fixed to the rotation shaft 32. The rotation shaft 32 is attached to the rotating body 20 via a bearing 34. Thereby, the container holder 30 can be rotated with respect to the rotating body 20.

  The container holder 30 is attached to the rotating body 20 at a position spaced apart from the revolution axis L1. Thereby, the container holder 30 can be revolved around the revolution axis L <b> 1 as the rotating body 20 rotates.

  In the present embodiment, one container holder 30 is attached to one rotating body 20. And the balance weight 36 is attached to the position on the opposite side to the container holder 30 in the rotary body 20. FIG. The balance weight 36 is configured such that the distance from the revolution axis L1 is variable. Thereby, the stirring deaerator 1 can be operated stably. However, as a modification, two container holders 30 can be attached to the rotating body 20. In this case, if the two container holders 30 are attached so as to have a point-symmetrical arrangement with the revolution axis L1 as the center, the stirring and defoaming device can be stably operated. Alternatively, the stirring and defoaming device may be configured such that three or more container holders 30 are attached to one rotating body 20.

  Moreover, in this Embodiment, the container holder 30 has an airtight structure, and it is comprised so that the inside can be hold | maintained at desired atmospheric pressure.

  The stirring and defoaming device 1 includes a drive mechanism. The drive mechanism plays a role of rotating and revolving the container holder 30 (storage container 100). Hereinafter, the drive mechanism will be described in detail.

  As shown in FIGS. 1 and 2, the drive mechanism includes a motor 40. The motor 40 plays a role of rotating the revolution shaft 10. In the stirring and defoaming device 1, when the revolution shaft 10 rotates, the rotating body 20 rotates, and the container holder 30 revolves accordingly. Therefore, in the present embodiment, it is possible to revolve the container holder 30 at a desired revolution angular velocity (revolution number) by controlling the rotation number of the motor 40. In the present embodiment, an induction motor (induction motor) can be applied as the motor 40. The rotation speed of the induction motor (the rotation speed of the revolution shaft 10) can be set to an arbitrary value by controlling the frequency of the AC power output from the inverter. However, a servo motor or a PM motor can be used as the motor 40.

  The drive mechanism includes a rotation drive mechanism for rotating the container holder 30. Hereinafter, the rotation driving mechanism will be described.

  The rotation drive mechanism includes a countershaft 42 that is disposed at a distance from the revolution shaft 10 and extends parallel to the revolution shaft 10. The countershaft 42 is held by the countershaft holding means 44. The countershaft holding means 44 is configured to include a rotation stopping means that rotatably holds the subshaft 42 and stops the rotation by fixing the subshaft 42. In the present embodiment, the auxiliary shaft 42 is attached via a bearing, whereby the auxiliary shaft 42 is rotatably held. In the present embodiment, the rotation stopping means is constituted by a solenoid having a movable iron core 45. In this case, as shown in FIG. 3A, the movable shaft 45 is brought into contact with the horizontal shaft 43 penetrating the subsidiary shaft 42, so that the subsidiary shaft 42 cannot rotate. Moreover, as shown in FIG. 3B, the movable shaft 45 is brought into non-contact with the horizontal shaft 43 so that the auxiliary shaft 42 can rotate. The position of the movable iron core 45 can be switched by turning on / off the current supplied to the solenoid.

  The rotation driving mechanism also includes a planetary shaft 46. The planetary shaft 46 is fixed to the rotating body 20 and revolves as the rotating body 20 rotates.

  The rotation drive mechanism includes a revolution shaft pulley 50 fixed to the revolution shaft 10. Since the revolution shaft pulley 50 is fixed to the revolution shaft 10, it rotates at the same angular velocity as the revolution shaft 10.

  The rotation driving mechanism includes an upper pulley 54 and a lower pulley 56 that are configured as a part of the annular member 52 and are rotatable about a concentric shaft with the revolution shaft 10. Since both the upper pulley 54 and the lower pulley 56 constitute a part of the annular member 52, they both behave integrally and rotate at the same rotational angular velocity. The annular member 52 is attached to the revolution shaft 10 via a bearing. Therefore, the upper pulley 54 and the lower pulley 56 (annular member 52) can rotate independently of the revolution shaft 10.

  The rotation driving mechanism includes a countershaft first pulley 58 fixed to the countershaft 42. Since the countershaft first pulley 58 is fixed to the countershaft 42, it rotates at the same angular velocity as the countershaft 42.

  The rotation drive mechanism includes a countershaft second pulley 60 attached to the countershaft 42 via a one-way clutch 62. In the present embodiment, when the countershaft 42 is set to be non-rotatable by the action of the one-way clutch 62, the rotation driving mechanism causes the countershaft second pulley 60 and the countershaft 42 to idle, and the countershaft 42 Is configured to be rotatable, the secondary shaft second pulley 60 and the secondary shaft 42 can rotate at the same angular velocity.

  The rotation drive mechanism includes a planetary first pulley 66 and a planetary second pulley 68 that are configured as a part of the planetary annular member 64 and are rotatable about the planetary shaft 46 and the concentric shaft. Since the planetary first pulley 66 and the planetary second pulley 68 together constitute part of the planetary annular member 64, they both behave integrally and rotate at the same rotational angular velocity. The planetary annular member 64 is attached to the planetary shaft 46 via a bearing. Therefore, the planetary first pulley 66 and the planetary second pulley 68 (the planetary annular member 64) can rotate with respect to the planetary shaft 46.

  The rotation driving mechanism includes a rotation pulley 70 fixed to the container holder 30. Since the rotation pulley 70 is fixed to the container holder 30, the container holder 30 and the rotation pulley 70 behave integrally. In the present embodiment, the rotation pulley 70 is provided on the outer periphery of the container holder 30.

  The rotation driving mechanism also includes a first belt 72 wound between the revolution shaft pulley 50 and the counter shaft second pulley 60, and a first belt 72 wound between the counter shaft first pulley 58 and the lower pulley 56. 2 belt 74, a third belt 76 that is wound around the upper pulley 54 and the planetary second pulley 68, and a fourth belt 78 that is wound around the planetary first pulley 66 and the rotating pulley 70. Including. The fourth belt 78 is wound around the planetary first pulley 66 and the rotation pulley 70 while being bent by the idler 79.

  In the present embodiment, the rotation driving mechanism is configured as described above. According to this rotation driving mechanism, the first defoaming device 1 is operated in a state where the auxiliary shaft 42 is fixed (a state in which the auxiliary shaft 42 is set to be non-rotatable), and the auxiliary shaft 42 is rotatable. It is possible to operate in two different modes, the second mode of operation operating at In these two operation modes, as shown below, the ratio between the rotation angular velocity and the revolution angular velocity of the container holder 30 (rotation / revolution angular velocity ratio) is different. In the following equations, the diameters of the rotation pulley 70, the planetary annular member 64, the annular member 52, the countershaft first pulley 58, the countershaft second pulley 60, and the revolution shaft pulley 50 are D1 to D6, respectively ( (See Table 1). Further, the rotational angular velocity of the container holder 30 was ω, and the revolution angular velocity was W.

That is, when the countershaft 42 is fixed in the stirring defoaming apparatus 1 (when the stirring defoaming apparatus 1 is operated in the first mode / see FIG. 3A), the countershaft first pulley 58 is fixed and The pulley 56 (annular member 52) is fixed. In this rotation driving mechanism, the rotation angular velocity of the container holder 30 is the relative angular velocity between the rotation angular velocity of the rotating body 20 (the revolution angular velocity of the container holder 30) and the rotation angular velocity of the upper pulley 54, and the upper pulley 54 and the planetary ring. Since it depends on the diameters of the member 64 (the planetary first pulley 66 and the planetary second pulley 68) and the rotation pulley 70, the rotation / revolution angular velocity ratio R1 of the container holder 30 at this time is expressed by the following equation.

  In the rotation drive mechanism, the revolution shaft pulley 50 is fixed to the revolution shaft 10, and the first belt 72 is wound around the revolution shaft pulley 50 and the auxiliary shaft second pulley 60. For this reason, whenever the revolution shaft 10 rotates, the secondary shaft second pulley 60 rotates. However, in this rotation driving mechanism, the rotational torque of the secondary shaft second pulley 60 is not transmitted to the secondary shaft 42 due to the action of the one-way clutch 62. Therefore, the secondary shaft second pulley 60 and the secondary shaft 42 run idle, and the revolving shaft 10 can freely rotate even when the secondary shaft 42 is fixed.

On the other hand, when the countershaft 42 is set to be rotatable (when the stirring and defoaming apparatus 1 is operated in the second mode / see FIG. 3B), the rotational angular velocity of the annular member 52 is the countershaft first speed. It is regulated by the pulley 58, the secondary shaft second pulley 60, and the revolution shaft pulley 50, and is related to the rotational angular velocity of the revolution shaft 10. The rotation angular velocity of the container holder 30 depends on the relative angular velocity between the rotation angular velocity of the rotating body 20 (the revolution angular velocity of the container holder 30) and the rotation angular velocity of the upper pulley 54, and the diameter of each pulley. The rotation / revolution angular velocity ratio R2 is expressed by the following equation.

  From this, it can be understood that the stirring deaerator 1 can be operated in two operation modes having different rotation / revolution angular velocity ratios. In particular, according to this rotation drive mechanism, the operation mode (rotation / revolution angular velocity ratio) can be changed by making the auxiliary shaft 42 “unrotatable (fixed)” or “made rotatable”.

  In the present embodiment, the agitation / deaeration apparatus 1 agitates the material M in the first operation mode, and thus the material M needs to flow in the storage container 100. Therefore, the stirring and defoaming device 1 needs to be designed so that the rotation / revolution angular velocity ratio (R1) in the first operation mode is a predetermined value or more. Conversely, the stirring and defoaming device 1 needs to reduce the flow of the material M in order to prevent the material M from entraining air in the second operation mode. Therefore, the stirring and defoaming device 1 needs to be designed so that the rotation / revolution angular velocity ratio (R2) in the second operation mode is a predetermined value or less.

As specific examples, the values of D1 to D6 indicating the diameters of the rotation pulley 70, the planetary annular member 64, the annular member 52, the countershaft first pulley 58, the countershaft second pulley 60, and the revolution shaft pulley 50 are as shown in Table 1. When set, R1 = 2/5 and R2 = 1/40, so that R1 can be set to a sufficiently large value and R2 can be set to a sufficiently small value.

  Although the above-mentioned rotation driving mechanism is realized by a power transmission mechanism using a pulley and a belt, the present invention is not limited to this, and the rotation driving mechanism may be realized using a gear. Is possible.

  As shown in FIG. 1, the stirring deaerator 1 includes a decompression unit 80. The decompression means 80 is configured to decompress at least the inside of the storage container 100. In the present embodiment, the decompression means 80 is configured to decompress the interior of the container holder 30. Hereinafter, the decompression means 80 will be described.

  The decompression means 80 includes a decompression pump 82. The decompression pump 82 plays a role of decompressing the inside of the storage container 100. As the decompression pump 82, any of the known devices can be used. However, it is preferable to use a vacuum pump 82 that is suitable for the use conditions of the stirring deaerator 1. As the decompression pump 82, for example, an apparatus capable of decompressing the inside of the storage container 100 to 0.67 kPa (= 5 torr) can be used.

  The decompression means 80 also includes a suction hose 84 having one end fixed to the container holder 30 and communicating with the container holder 30 and the other end communicating with the decompression pump 82. As the suction hose 84, any known tubular member can be applied, but it is preferable to use one that is suitable for the use conditions of the stirring and deaerator 1. For example, the suction hose 84 preferably has sufficient strength so as not to be damaged in the process of rotating and revolving the storage container 100. Moreover, it is preferable that the suction hose 84 is configured not to be crushed by a negative pressure for reducing the pressure inside the storage container 100. Furthermore, the suction hose 84 may be configured to be deformable.

  In the present embodiment, one end of the suction hose 84 is fixed to the container holder 30 (the lid of the container holder 30). The other end of the suction hose 84 is attached to the housing 90 via a rotary joint 86. Thereby, it is possible to prevent the suction hose 84 from being twisted and damaged in the process of rotating and revolving the container holder 30.

  The decompression means 80 further includes a relay pipe 88 that relays between the decompression pump 82 and the suction hose 84. The relay pipe 88 can be configured to include a pressure gauge (not shown) and various valves as necessary.

  According to the decompression means 80, the inside of the container holder 30 is decompressed by the decompression pump 82 via the suction hose 84 and the relay pipe 88. As a result, the inside of the storage container 100 disposed in the container holder 30 is decompressed. In the present embodiment, the container holder 30 is airtight. Thereby, it becomes possible to set and maintain the internal pressure of the container holder 30 to a predetermined value.

  The stirring and defoaming device 1 includes a housing 90, a support body 92 that supports the revolving shaft 10 and the rotating body 20, the motor 40, the auxiliary shaft holding means 44, and the like in the housing 90, and the vibration of the support body in the housing 90. Further, it is configured to further include vibration-proof means (such as a vibration-proof wire and a vibration-proof spring).

  The stirring deaerator 1 also includes a storage container 100 shown in FIGS. 1 and 4. The storage container 100 is a container in which a material (stirred defoamed material) M is stored. The storage container 100 is configured to be detachable from the container holder 30. In addition, the storage container 100 is configured to be held by the container holder 30, to rotate with the rotation of the container holder 30, and to revolve with the revolution of the container holder 30. Note that the constituent material of the storage container 100 is not particularly limited, and a container made of any known material such as resin or metal can be used. In the present embodiment, the material M is directly stored in the storage container 100.

  As shown in FIG. 4, the storage container 100 includes a container body 110. The container main body 110 has an internal space, and is configured to store the material M in the internal space. The storage container 100 also includes a lid 120. The lid 120 includes an inner lid 122 and an outer lid 124.

  In the present embodiment, as shown in FIG. 4, a through hole 130 is formed in the storage container 100. The through hole 130 is formed in the lid 120 (the inner lid 122 and the outer lid 124). The inner and outer sides of the storage container 100 are communicated with each other through the through hole 130, and the pressure in the storage container 100 becomes equal to the pressure in the container holder 30. That is, the inside of the storage container 100 can be decompressed by the decompression means 80.

  The stirring and defoaming device 1 includes a control unit 200. The control means 200 plays a role of comprehensively controlling the operation of the stirring and defoaming apparatus 1. The control means 200 controls the revolution angular velocity and rotation angular velocity (revolution number and rotation number) of the container holder 30. The control means 200 also controls the atmospheric pressure (vacuum pressure) in the storage container 100. The control means 200 can be configured to perform sequence control on the stirring and deaerator 1. Hereinafter, the control means 200 will be described. FIG. 5 is a diagram for explaining the control means 200.

  The control means 200 includes a microprocessor (CPU 202), a rotation / revolution angular velocity control unit 204 that controls the rotation angular velocity and revolution angular velocity of the container holder 30, and a container internal pressure control unit 206 that controls the atmospheric pressure in the storage container 100. Then, the CPU 202 controls the operation of the stirring and defoaming device 1 by outputting various signals to the self-revolving angular velocity control unit 204 and the container internal pressure control unit 206.

  In the present embodiment, the self-revolving angular velocity control unit 204 includes a motor control unit 208 that controls the rotation speed of the motor 40. The motor control unit 208 can be realized by an inverter control unit that controls the operation of the inverter and sets the frequency of the AC power supplied to the motor 40 to a predetermined value.

  The self-revolving angular velocity control unit 204 also includes an operation mode switching unit 210 that switches the operation mode of the stirring and defoaming device 1. The operation mode switching unit 210 can be realized by a switching element that switches on / off of a current supplied to the solenoid.

  The container internal pressure control unit 206 can be realized by a pump control unit that controls the operation of the decompression pump 82 and a switching element that switches opening and closing of various valves included in the decompression unit 80.

  Then, the CPU 202 performs processing of transmitting various signals (revolution angular velocity data, vacuum pressure data, etc. of the storage container 100) to the self-revolution angular velocity control unit 204 and the container internal pressure control unit 206. Thereby, the storage container 100 can be rotated at a predetermined revolution angular velocity and rotation angular speed, and the inside of the storage container 100 can be set to a desired vacuum pressure.

  Further, the CPU 202 receives operation data (revolution angular velocity data, vacuum pressure data, operation time data, etc. of the storage container 100) input from the operation unit 214 and stores it in a storage unit (not shown) or the display unit 216. Processing for displaying various information (operation data input from the operation unit 214, revolution angular velocity of the storage container 100, vacuum pressure in the container holder 30, elapsed time, etc.) is performed.

  The stirring and defoaming apparatus 1 according to the present embodiment is configured as described above. In addition, the material M used as the object of the process of the stirring deaerator 1 is not particularly limited. The material M includes, for example, a liquid (paste-like) material such as an adhesive, solder, a dental impression material, dental cement (a filling agent, etc.), and a highly viscous liquid medicine. However, the material M may be a solid (powdered) material. The material M may be a mixed material of a liquid material and a solid material.

(2) Stirring and defoaming method Next, the stirring and defoaming method of the material M which concerns on this Embodiment is demonstrated with reference to FIGS. Here, FIGS. 6 and 7 are flowcharts for explaining the stirring defoaming method, and FIG. 8 is a timing chart for explaining the stirring defoaming method.

  As shown in FIG. 6, the stirring and defoaming method for the material M includes the stirring and defoaming process for performing the stirring and defoaming process for the material M (step S100), and the stopping of the stirring and defoaming device for stopping the stirring and defoaming device 1. Processing step (step S102). Hereinafter, each process is explained in full detail.

  In the stirring defoaming process (step S100), the storage container 100 is revolved while rotating at a predetermined rotation speed in a state where the inside of the storage container 100 is set to a predetermined vacuum pressure. The stirring defoaming process is performed for a predetermined time (t1) from the start of operation of the stirring defoaming apparatus 1. The vacuum pressure in the storage container 100, the revolution angular speed and rotation angular speed of the storage container 100, and the time (t1) during which the stirring and defoaming treatment process is performed can be set as appropriate according to the properties of the material. .

  In addition, when utilizing the above-described stirring and defoaming apparatus 1, the stirring and defoaming process is performed in a state where the auxiliary shaft 42 is not rotatable (the stirring and defoaming apparatus 1 is operated in the first operation mode). Thereby, since the material M flows intensely in the storage container 100, the material M is stirred and degassed.

  In addition, the revolution angular velocity and the rotation angular velocity (rotational angular velocity of the motor 40) in the storage container 100 in the stirring and defoaming process may be always constant except during acceleration, or may be changed with the passage of time. It is. For example, the stirring defoaming process is divided into N steps, and the revolution angular velocity and the rotation angular velocity of the storage container 100 are changed with time by changing the rotation angular velocity of the motor 40 to a different value in each step. Can be varied.

  Then, the stop processing step (step S102) of the stirring and defoaming device includes a rotation angular velocity reduction step (step S104) for reducing the rotation angular velocity of the storage container 100, and the inside of the storage container 100 to atmospheric pressure as shown in FIG. It includes an air release step (step S106) for opening, and a revolution angular velocity reduction step (step S108) for reducing the revolution angular velocity of the storage container 100. Each will be described in detail below.

  In the rotation angular velocity reduction step (step S104), a process of reducing the rotation angular velocity of the storage container 100 while reducing the rotation / revolution angular speed ratio of the storage container 100 is performed. In the stirring and defoaming device 1, the rotation / revolution angular velocity ratio is reduced by switching the auxiliary shaft 42 to be rotatable (by switching the operation mode of the stirring and defoaming device 1 to the second operation mode) (formula (1 ) And formula (2)). Therefore, in the stirring and defoaming device 1, the rotation angular velocity reduction step can be realized by the operation mode switching process. In the present embodiment, the rotation angular velocity reduction step is performed after the stirring defoaming process (step S100).

  In the air release step (step S106), processing for releasing the inside of the storage container 100 to atmospheric pressure is performed. In the stirring and defoaming device 1, the air release step can be realized, for example, by opening an air release valve (vacuum break valve) (not shown). The air release step (step S106) is started after the rotation angular velocity reduction step. In the present embodiment, the air release step is started after a predetermined time (T1) has elapsed after the rotation angular velocity reduction step is started (see FIG. 8).

  In the revolution angular velocity reduction step (step S108), processing for reducing the revolution angular velocity of the storage container 100 is performed. In the stirring and defoaming device 1, the revolution angle reduction step can be realized by reducing the rotation speed of the motor 40. In the present embodiment, the motor 40 is stopped by the revolution angular velocity reduction step, and the revolution of the storage container 100 is stopped. Further, in the stirring and defoaming device 1, the rotation angular velocity is reduced as the revolution angular velocity is reduced, and the rotation of the storage container 100 is stopped when the motor 40 is stopped. The revolution angular velocity reduction step is started after the atmospheric release step. In the present embodiment, the revolution angular velocity reduction step is started after a predetermined time (T2) has elapsed after the rotation angular velocity reduction step is started (see FIG. 8).

  The predetermined times T1 and T2 described above may be values set in advance in the stirring and defoaming device 1 (control means 200) or may be values appropriately set by the user. . The predetermined times T1 and T2 are set so that the relationship of T1 <T2 is established.

  Through the above steps, the stirring and defoaming apparatus 1 is stopped, and the stirring and defoaming process and the stopping process of the stirring and defoaming apparatus 1 are completed.

(4) Effect Next, the effect which this Embodiment, especially the stop process process of a stirring defoaming device show | plays is demonstrated.

  As described above, in this stirring and defoaming method, in the stopping process step of the stirring and defoaming device 1, the rotation angular velocity of the storage container 100 is reduced, and then the interior of the storage container 100 is released to atmospheric pressure. According to this, when the stirring and defoaming apparatus 1 is stopped, it is possible to prevent air from being mixed into the material M, and it is possible to acquire the material that has been stirred and defoamed with high accuracy. Hereinafter, the operation will be described in detail.

  First, in this stirring and defoaming method, the container 100 is operated in the first operation mode in a state where the inside of the storage container 100 is depressurized, and a process of stirring and defoaming the material M is performed (step S100). When the stirring and defoaming device 1 operates in the first operation mode, the material M flows vigorously in the storage container 100, so that the material M can be stirred accurately and the contact area between the material M and the vacuum atmosphere is increased. Since it becomes large (the contact frequency between the material M and the vacuum atmosphere increases), it becomes possible to degas the material M with high accuracy.

  By the way, if the stirring and defoaming apparatus 1 is operated in the first operation mode in a state where the inside of the storage container 100 is opened to the atmospheric pressure, it may be difficult to defoam the material M with high accuracy. This is because the stirring and defoaming device 1 needs to stir the material M, so that the material M flows in the first operation mode, and the first container is opened in the storage container 100 to the atmospheric pressure. This is because when the operation is performed in the first operation mode, the material M may involve air.

  Therefore, after the stirring and defoaming process (step S100), if the inside of the storage container 100 is opened to the atmospheric pressure and the stirring and defoaming device 1 is operated in the first operation mode, the defoaming is performed with high accuracy. There is a concern that the material M thus entrained in new air.

  Moreover, if the rotation and revolution of the storage container 100 are stopped in the state where the inside of the storage container 100 is depressurized after the stirring and defoaming process (step S100), the internal pressure of the material M is higher than the atmospheric pressure in the storage container 100. It becomes high and the situation where a new bubble is generated from the inside of material M (material M boils) may arise.

  On the other hand, in the stirring defoaming method of the present embodiment, the rotation angular velocity reduction step (step S104) is performed in the stop processing step (step S102) for stopping the stirring defoaming device 1, and then the atmospheric release step ( Step S106) is started. That is, after reducing the rotation angular velocity of the storage container 100 (after switching the operation mode of the stirring and defoaming apparatus 1 to the second operation mode), the inside of the storage container 100 is opened to the atmosphere. In the stirring and defoaming device 1, the flow (movement) of the material M becomes smaller as the rotation angular velocity of the storage container 100 decreases. Therefore, it is possible to prevent the material M from entraining new air by reducing the rotation angular velocity and then opening the storage container 100 to atmospheric pressure.

  In the present embodiment, the rotation angular velocity is reduced while the rotation / revolution angular velocity ratio is reduced in the rotation angular velocity reduction step. Therefore, it is possible to reduce the rotation angular velocity while keeping the revolution angular velocity of the storage container 100 at a predetermined value or more. Therefore, it is possible to maintain a state in which a centrifugal force of a predetermined value or more acts on the material M, and it is possible to prevent new bubbles from being generated from the inside of the material M even when the inside of the storage container 100 is depressurized. . In addition, the revolution angular velocity of the storage container 100 is set to a sufficient value that can prevent the generation of new bubbles from the inside of the material M, and the value can be calculated by experiment.

  In this embodiment, the revolution angular velocity reduction step (step S108) is started after the atmospheric release step (step S106). In other words, in the present embodiment, the revolution angular velocity of the storage container 100 is decreased after the atmospheric pressure in the storage container 100 is increased. Therefore, the revolution angular velocity of the storage container 100 can be reduced (stopped) so that no new bubbles are generated from the inside of the material M.

  In the present embodiment, the stirring and defoaming device 1 is configured to rotate the storage container 100 at an extremely small speed with respect to the revolution angular velocity in the second operation mode (see FIG. 8). According to this, it is possible to prevent the material M from flowing vigorously and air from being caught in the material M, and to prevent the material M from being separated by the centrifugal separation action.

2. Second Embodiment Hereinafter, a second embodiment to which the present invention is applied will be described.

(1) Configuration of Agitation Defoaming Device 2 Hereinafter, the configuration of the agitation defoaming device 2 according to the present embodiment will be described focusing on differences from the agitation defoaming device 1. 9 and 10 are diagrams for explaining the configuration of the stirring and defoaming device 2. FIG.

  As shown in FIG. 9, the stirring and defoaming apparatus 2 according to the present embodiment includes a drive mechanism for rotationally driving the container holder 30 (storage container 100). In the present embodiment, the drive mechanism is configured to be able to rotate and / or revolve the container holder 30. That is, the drive mechanism (agitating and defoaming device 2) is configured to be able to revolve while rotating the container holder 30, to allow only the container holder 30 to rotate, and to cause the container holder 30 to only revolve. It is configured to be possible. Hereinafter, the drive mechanism will be described in detail.

  The drive mechanism includes a first motor 302 and a second motor 304. The first motor 302 plays a role of rotating the storage shaft 100 by rotating the revolving shaft 10. The second motor 304 plays a role of controlling the rotation angular velocity of the storage container 100. As the first and second motors 302 and 304, any of known motors can be used. For example, the first and second motors 302 and 304 can be realized by servo motors (motors that operate by numerical control). However, the functions of the first and second motors 302 and 304 can be realized using an induction motor.

  The drive mechanism is also fixed to the rotating shaft 306 fixed to the rotating shaft of the second motor 304, the first and second pulleys 310 and 312 provided on the concentric shaft of the revolution shaft 10, and the rotating shaft 32. And a rotated pulley 314. The first and second pulleys 310 and 312 are both part of an annular member 308 attached concentrically with the revolution shaft 10, and both behave integrally. In this embodiment, since the annular member 308 is attached to the revolution shaft 10 via a bearing, the first and second pulleys 310 and 312 can rotate independently of the revolution shaft 10. . Further, since the rotation pulley 314 is fixed to the rotation shaft 32, the rotation angular velocity (rotation angular velocity) of the rotation pulley 314 coincides with the rotation angular velocity of the container holder 30 (storage container 100).

  The drive mechanism also includes a first belt 316 wound around the rotating pulley 306 and the first pulley 310, a second belt 318 wound around the second pulley 312 and the rotating pulley 314, and a second belt 318. And an idler 319 for bending the belt 318. The power transmission mechanism can be realized by using gears instead of the pulley and the belt.

  In the present embodiment, the drive mechanism is configured as described above. According to this drive mechanism, by adjusting the rotation speeds of the first motor 302 and the second motor 304, it is possible to control the rotation angular velocity (the revolution angular velocity and the rotation angular velocity of the storage container 100) of the rotation pulley 314. Become.

  That is, according to this drive mechanism, the rotating body 20 is rotated by the first motor 302, and the storage container 100 is revolved accordingly. Therefore, in this embodiment, the revolution angular velocity of the storage container 100 can be controlled by adjusting the rotation speed of the first motor 302. Further, according to this drive mechanism, the power of the second motor 304 is transmitted to the rotation pulley 314, so that the rotation angular speed of the storage container 100 can be controlled by adjusting the rotation speed of the second motor 304. it can.

  From this, in the present embodiment, it is understood that the revolution angular velocity and the rotation angular velocity (that is, the rotation / revolution angular velocity ratio) of the storage container 100 can be controlled by the rotation speeds of the first and second motors 302 and 304. .

  The stirring deaerator 2 includes a decompression unit 320. The decompression means 320 is configured to decompress at least the inside of the storage container 100. Hereinafter, the decompression unit 320 will be described.

  The decompression means 320 includes a vacuum chamber 322 and a decompression pump 324. The vacuum chamber 322 is configured to be able to maintain the inside in a reduced pressure environment. The decompression pump 324 is configured to decompress the interior of the vacuum chamber 322. In the present embodiment, the container holder 30 (storage container 100) described above is disposed in the vacuum chamber 322. Therefore, the inside of the storage container 100 can be decompressed by the decompression means 320. The decompression means 320 can be configured to include a pressure gauge (not shown) and various valves. Further, a through hole is formed in the vacuum chamber 322, and the revolution shaft 10 and the rotation shaft of the second motor 304 are provided so as to penetrate the through hole. By providing a magnetic fluid seal between the rotation shaft of the revolution shaft 10 and the second motor 304 and the through hole of the vacuum chamber 322, the inside of the vacuum chamber 322 can be decompressed.

  The stirring deaerator 2 includes a control unit 330 shown in FIG. The control means 330 controls the rotation speeds of the first and second motors 302 and 304. Thereby, the storage container 100 can be rotated at a desired revolution angular velocity and rotation angular velocity. The control means 330 also controls the vacuum pressure in the vacuum chamber 322.

  The control means 330 includes a first motor control unit 332 that controls the rotation speed of the first motor 302, a second motor control unit 334 that controls the rotation speed of the second motor 304, and a vacuum chamber 322. A container internal pressure control unit 336 that controls the vacuum pressure and a microprocessor (CPU 338) are included.

  The first motor control unit 332 controls the rotation speed of the first motor 302 based on a signal received from the CPU 338. The second motor control unit 334 controls the rotation speed of the second motor 304 based on the signal received from the CPU 338. Accordingly, the revolution angular velocity (revolution number) and the rotation angular velocity (revolution number) of the container holder 30 are set to desired values, and the storage container 100 can be rotated at the desired rotation angular velocity and revolution angular velocity.

  In the present embodiment, the functions of the first and second motors 302 and 304 can be realized by a servo motor. In this case, the first and second motor control units 332 and 334 are realized by dedicated drivers and hardware, and perform various processes for operating the first and second motors 302 and 304 at a desired rotational speed. Do.

  Further, the container internal pressure control unit 336 controls the output of the decompression pump 324 and the opening / closing of various valves based on a signal received from the CPU 338. Thereby, the vacuum pressure in the vacuum chamber 322 is set to a desired value.

  Then, the CPU 338 performs processing for deriving the rotational speeds of the first and second motors 302 and 304 based on the revolution angular velocity and rotation angular velocity information of the storage container 100 input by the user, and the derived first and second derived values. Processing for storing the rotation speed information indicating the rotation speeds of the motors 302 and 304 in the storage unit in association with the elapsed time, or reading out the rotation speed information stored in the storage unit, and the first and second motor control units Various types of processing such as processing transmitted to 332 and 334 can be performed. Further, the CPU 338 may be configured to perform processing for deriving the rotation angular velocity of the storage container 100 based on the measurement values (measurement rotation speed information) of the rotation speeds of the first and second motors 302 and 304. Is possible.

(2) Stirring and defoaming method Next, the stirring and defoaming method for the material M according to the present embodiment will be described.

  The stirring and defoaming method for the material M according to the present embodiment includes a stirring and defoaming process step for stirring and defoaming the material M, and a stopping process step for the stirring and defoaming device that stops the stirring and defoaming device 2.

  In the stirring and defoaming process, the storage container 100 is rotated at a desired rotation angular speed while revolving at a desired revolution angular speed in a state where the inside of the storage container 100 is decompressed. The vacuum pressure in the storage container 100, the revolution angular speed and rotation angular speed of the storage container 100, and the stirring and defoaming processing time can be arbitrarily set according to the material M.

  In the stop processing step of the stirring and defoaming device, a rotation angular velocity reduction step, an atmospheric pressure release step that starts after the rotation angular velocity reduction step, and a revolution angular velocity reduction step that starts after the atmosphere release step are performed. In the present embodiment, the atmospheric pressure releasing step is started when the rotation angular velocity of the storage container 100 is equal to or less than a predetermined value (rot (x)). Further, in the present embodiment, the revolution angular velocity reduction step is started when the vacuum pressure in the storage container 100 is equal to or higher than a predetermined value (bar (x)). FIG. 11 is a timing chart showing this stirring defoaming processing method.

  Note that rot (x) and bar (x) may be stored in the control means (storage part of the control means) as values inherent to the stirring and defoaming device 2, or values set by the user as appropriate. May be. Further, it is important that rot (x) and bar (x) have values that do not allow bubbles to be mixed into the material M, and the conditions can be calculated by experiments.

(3) Effect Next, the effect which this Embodiment, especially the stop process process of a stirring defoaming device show | plays is demonstrated.

  In the present embodiment, the atmospheric release step is started when the rotation angular velocity is equal to or lower than a predetermined value. Therefore, it is possible to start the air release step at the earliest timing at which bubbles do not enter the material M. In the present embodiment, the revolution angular velocity reduction step is started when the vacuum pressure in the storage container 100 is equal to or higher than a predetermined value. Therefore, the revolution angular velocity reduction step can be started at the earliest timing at which new bubbles are not generated from the inside of the material M. From this, in this Embodiment, it becomes possible to complete | finish the stop process of the stirring deaerator 2 in a short time.

(4) Modified Examples Hereinafter, modified examples of the present embodiment will be described.

  FIG. 12 is a timing chart showing a stirring and defoaming method according to a modification. In this stirring and defoaming method, the air release step is started after the rotation angular velocity of the storage container 100 is stopped. Therefore, the air release step can be started in a state where the flow of the material M has stopped in the storage container 100. Thereby, it can prevent more reliably that the material M entraps new air in an air release step.

  Further, in this stirring defoaming method, the revolution angular velocity reduction step is started after the inside of the storage container 100 is opened to the atmospheric pressure. Thereby, it is possible to more reliably prevent new bubbles from being generated from the inside of the material M when the revolution angular velocity is decreased (when the revolution is stopped).

  Alternatively, as another modified example, as shown in FIG. 13, when the rotation / revolution angular velocity ratio of the storage container 100 reaches a predetermined value (rat (x)), it is possible to start the air release step. . In the rotation / revolution type stirring and defoaming apparatus, when the rotation / revolution angular velocity ratio decreases, the flow of the material M decreases. Therefore, it is possible to prevent the material M from entraining new air by starting the atmosphere release step when the rotation / revolution angular velocity ratio is equal to or less than a predetermined value. The condition for starting the atmosphere release step (rat (x) value) can be derived by experiment and can be appropriately set according to the material M.

The figure for demonstrating the stirring defoaming apparatus which concerns on a 1st Example. The figure for demonstrating the stirring defoaming apparatus which concerns on a 1st Example. The figure for demonstrating the stirring defoaming apparatus which concerns on a 1st Example. The figure for demonstrating the stirring defoaming apparatus which concerns on a 1st Example. The figure for demonstrating the stirring defoaming apparatus which concerns on a 1st Example. The figure for demonstrating the stirring defoaming method which concerns on a 1st Example. The figure for demonstrating the stirring defoaming method which concerns on a 1st Example. The figure for demonstrating the stirring defoaming method which concerns on a 1st Example. The figure for demonstrating the stirring defoaming apparatus which concerns on a 2nd Example. The figure for demonstrating the stirring defoaming apparatus which concerns on a 2nd Example. The figure for demonstrating the stirring defoaming method which concerns on a 2nd Example. The figure for demonstrating the stirring defoaming method which concerns on a modification. The figure for demonstrating the stirring defoaming method which concerns on a modification.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Stirring deaerator, 2 ... Stirring deaerator, 10 ... Revolving shaft, 20 ... Rotating body, 30 ... Container holder, 32 ... Spinning shaft, 34 ... Bearing, 36 ... Balance weight, 40 ... Motor, 42 ... Sub Axis 43: Horizontal axis 44 ... Secondary shaft holding means 45 ... Movable iron core 46 ... Planetary shaft 50 ... Revolving shaft pulley 52 ... Annular member 54 ... Upper pulley 56 ... Lower pulley 58 ... Secondary shaft First pulley 60 ... Secondary shaft second pulley 62 ... One-way clutch 64 ... Planetary annular member 66 ... Planetary first pulley 68 ... Planetary second pulley 70 ... Spinning pulley 72 ... First belt 74 ... Second belt, 76 ... Third belt, 78 ... Fourth belt, 79 ... Idler, 80 ... Decompression means, 82 ... Decompression pump, 84 ... Suction hose, 86 ... Rotary joint, 88 ... Medium Tube: 90 ... Case, 92 ... Support, 100 ... Storage container, 110 ... Container body, 120 ... Cover, 122 ... Inner lid, 124 ... Outer lid, 130 ... Through hole, 200 ... Control means, 204 ... Self Revolution angular velocity control unit 206 ... Container internal pressure control unit 208 ... Motor control unit 208 ... Operation mode switching unit 212 ... Revolution angular velocity sensor 214 ... Operation unit 216 ... Display unit 302 ... First motor 304 ... 2nd motor, 306 ... rotating pulley, 308 ... annular member, 310 ... 1st pulley, 312 ... 2nd pulley, 314 ... rotating pulley, 316 ... 1st belt, 318 ... 2nd belt, 319 ... Idler, 320 ... Decompression unit, 322 ... Vacuum chamber, 324 ... Decompression pump, 330 ... Control unit, 332 ... First motor control unit 334 ... second motor control unit, 336 ... internal pressure of the container controller, L1 ... revolution axis, L2 ... rotation axis, M ... materials

Claims (8)

A method of stopping a stirring and defoaming device configured to be able to rotate and revolve a container containing a material in a state where the inside of the container is decompressed,
A rotation angular velocity reduction step of reducing the rotation angular velocity of the container while reducing the rotation / revolution angular velocity ratio of the container;
An atmospheric release step for opening the inside of the container to atmospheric pressure, which is started after the rotation angular velocity reduction step;
A revolution angular velocity reduction step of reducing the revolution angular velocity of the container, which is started after the atmospheric release step;
A method for stopping the stirring and deaerator. In the stopping method of the stirring deaerator according to claim 1,
The air release step is a method of stopping the stirring and defoaming device that is started when the rotation angular velocity is equal to or lower than a predetermined value. In the stopping method of the stirring deaerator according to claim 1,
The atmosphere release step is a method for stopping the stirring and defoaming device that is started after the rotation of the container is stopped. In the stopping method of the stirring deaerator according to claim 1,
The air release step is a method of stopping the stirring and defoaming device that is started when the rotation / revolution angular velocity ratio of the container is equal to or less than a predetermined value. In the stopping method of the stirring and defoaming device according to any one of claims 1 to 4,
The atmosphere release step is a method of stopping the stirring and defoaming device that is started when the revolution angular velocity of the container is equal to or higher than a predetermined value. In the stopping method of the stirring deaerator according to any one of claims 1 to 5,
The revolution angular velocity reduction step is a method of stopping the stirring and defoaming device that is started when the atmospheric pressure in the container is equal to or higher than a predetermined value. In the stopping method of the stirring deaerator according to any one of claims 1 to 5,
The revolution angular velocity lowering step is a method of stopping the stirring and defoaming apparatus, which is started after the inside of the container is opened to atmospheric pressure. A stirring and defoaming device configured to be capable of rotating and revolving a container containing a material in a state where the inside of the container is decompressed,
Control means for controlling the rotation angular velocity and revolution angular velocity of the container, and the atmospheric pressure in the container;
The control means includes
When stopping the rotation and revolution of the container, the internal pressure of the container is released to atmospheric pressure and the stirring and defoaming device is stopped.
After starting the rotation angular velocity reduction process for reducing the rotation angular velocity while reducing the rotation / revolution angular velocity ratio of the container, and starting the atmosphere opening process for opening the inside of the container to atmospheric pressure, and
A stirring and defoaming device that starts a revolution angular velocity reduction process for reducing the revolution angular velocity of the container after the start of the atmosphere release process.

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