JP7305820B2 - Blender and controller - Google Patents

Description

The present invention relates to a compounding device and control device.

2. Description of the Related Art Conventionally, for example, a blending device is known that blends a moisture-proof material or the like to be applied to a printed circuit board with a target viscosity. Such a blending apparatus blends a diluent with a viscosity lower than that of the stock solution with the stock solution, and mixes them so as to achieve a target viscosity while measuring the viscosity with a viscosity sensor (see, for example, Patent Document 1).

JP 2007-103895 A

Conventionally, however, there is still room for further improvement in terms of preparing a liquid preparation with a target viscosity with high accuracy.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a blending device and a control device capable of blending a blended liquid with a target viscosity with high accuracy.

In order to solve the above-described problems and achieve the object, the compounding device according to the present invention includes a first tank, a second tank, a compounding tank, a viscosity sensor, and a control device. The first tank contains a first liquid. The second tank contains a second liquid having a viscosity lower than that of the first liquid. The mixing tank mixes the first liquid supplied from the first tank and the second liquid supplied from the second tank to prepare a mixed liquid. The viscosity sensor is provided in the preparation tank and measures the viscosity of the preparation liquid. The control device measures the viscosity of the first liquid based on the supply time when a specified amount of the first liquid is supplied from the first tank to the mixing tank at a constant pressure, and measures the viscosity of the first liquid. perform rough blending by supplying and blending the second liquid so that the viscosity is higher than the target viscosity based on the viscosity of the second liquid, and after the rough blending, based on the measurement result of the viscosity sensor of the blended liquid and, by supplying the second liquid to the blending tank, precision blending is performed for blending the blended liquid with a target viscosity.

ADVANTAGE OF THE INVENTION According to this invention, a preparation liquid can be prepared with target viscosity with high precision.

FIG. 1 is a diagram showing a configuration example of a compounding device according to an embodiment. FIG. 2 is a block diagram illustrating a configuration example of a control device according to the embodiment; FIG. 3 is a diagram showing an example of viscosity map information. FIG. 4 is a diagram showing an example of compounding ratio map information. FIG. 5 is an explanatory diagram of the preparation method of the prepared liquid. FIG. 6 is an explanatory diagram of the cleaning process of the mixing tank. FIG. 7 is an explanatory diagram of the cleaning process of the mixing tank. FIG. 8 is an explanatory diagram of a stirring method in a pipe located downstream from the discharge port. FIG. 9 is a diagram illustrating a processing procedure of processing executed by the compounding device according to the embodiment; FIG. 10 is a diagram illustrating a processing procedure of processing executed by the compounding device according to the embodiment; FIG. 11 is a diagram illustrating a processing procedure of processing executed by the compounding device according to the embodiment; FIG. 12 is a diagram illustrating a processing procedure of processing executed by the compounding device according to the embodiment;

Hereinafter, embodiments of the compounding device and the control device disclosed in the present application will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by embodiment shown below.

In the following description, the moisture-proof material to be applied to the printed circuit board is prepared as a prepared liquid, but the prepared liquid may be another liquid such as paint. In other words, it may be a mixed liquid in which two kinds of liquids having different viscosities are mixed.

First, FIG. 1 is a diagram showing a configuration example of a compounding apparatus according to an embodiment. As shown in FIG. 1, the preparation device 1 according to the embodiment includes a stock solution tank (an example of a first tank) 100, a diluent tank (an example of a second tank), a preparation tank 300, and a control device 10 (see FIG. 1). 2). The undiluted solution tank 100 and the preparation tank 300 are connected to each other by the undiluted solution supply path 110 provided with the first solenoid valve V1. Further, the diluent tanks 200 are connected to each other by a diluent supply path 210 provided with a second solenoid valve V2.

The undiluted solution tank 100 is a tank containing the undiluted solution (an example of the first liquid) of the moisture-proof material. Further, as shown in FIG. 1, the undiluted solution tank 100 is connected with a pump P1, a pressure regulator R1, a pressure valve V10, and a pressure sensor PS1.

Pump P1 generates compressed air for pressurizing the inside of undiluted solution tank 100 . The pressure regulator R1 supplies the compressed air generated by the pump P1 to the undiluted solution tank 100 at a constant pressure. The pressure valve V10 is, for example, an electromagnetic valve. A pressure sensor PS1 detects the pressure inside the pressurized stock solution tank 100 . With such a configuration, the inside of the undiluted solution tank 100 is pressurized at a constant pressure.

The undiluted solution tank 100 supplies the undiluted solution stored in the undiluted solution tank 100 to the preparation tank 300 via the undiluted solution supply path 110 when the first solenoid valve V1 is opened under the control of the control device 10 . Since the inside of the undiluted solution tank 100 is pressurized at a constant pressure, the undiluted solution is supplied to the preparation tank 300 at a constant pressure.

The diluent tank 200 is a tank containing a diluent (an example of the second liquid) that dilutes the stock solution. The diluent is a liquid with a lower viscosity than the stock solution, such as thinner. Further, as shown in FIG. 1, the diluent tank 200 is connected with a pump P2, a pressure regulator R2, a pressure valve V20, and a pressure sensor PS2.

Pump P2 generates compressed air for pressurizing the inside of diluent tank 200 . The pressure regulator R2 supplies the compressed air generated by the pump P2 to the diluent tank 200 at a constant pressure. The pressure valve V20 is, for example, an electromagnetic valve. A pressure sensor PS2 detects the pressure inside the pressurized diluent tank 200 . With such a configuration, the inside of the diluent tank 200 is pressurized with a constant pressure.

The diluent tank 200 supplies the diluent stored in the diluent tank 200 to the preparation tank 300 via the diluent supply path 210 when the second solenoid valve V2 is opened under the control of the control device 10 . Since the interior of the diluent tank 200 is pressurized at a constant pressure, the diluent is supplied to the preparation tank 300 at a constant pressure.

The compounding tank 300 mixes the undiluted solution supplied from the undiluted solution tank 100 and the diluent supplied from the diluent tank 200 to compound the moisture-proof material as the mixed solution. The mixing tank 300 is also provided with a stirring device 310, liquid level sensors HSh and HSl, and a viscosity sensor VS1.

The stirring device 310 stirs the prepared liquid in the prepared tank 300 with a stirring blade. The liquid level sensors HSh and HSl detect the level of the prepared liquid stored in the prepared tank 300 . Specifically, the liquid level sensors HSh and HSl include a liquid level sensor HSl for detecting whether or not the liquid level has reached a first liquid level, and a second liquid level higher than the first liquid level. and a liquid level sensor HSh for detecting whether or not the liquid level has reached the maximum.

The first liquid level detected by the liquid level sensor HSl is the liquid level height at which the viscosity can be measured by the viscosity sensor VS1, and is the minimum liquid level height at which the mixing tank 300 can be stirred. be. The liquid level sensor HSh is the maximum value of the liquid level height in the mixing tank 300 that can be stirred. That is, the prepared liquid is prepared in the range from the first liquid level to the second liquid level.

The viscosity sensor VS1 is a sensor that measures the viscosity of the prepared liquid. The viscosity sensor VS1 is a sensor whose measurement range is before and after the target viscosity.

Further, the compounded tank 300 is discharged from the outlet 320 into the compounded tank 400 (see FIG. 6) when the manual valve V30 is opened by the operator after compounding. That is, the blending device 1 according to the embodiment is a batch-type blending device in which the volume of the blending tank 300 is one batch.

Here, the compounding method according to the embodiment will be described. As described above, the quality of moisture-proof materials for printed circuit boards depends on the viscosity of the coating. Specifically, if the viscosity is high, it will not spread on the substrate and will not be sufficiently coated, and if the viscosity is low, it will spread to areas that should not be coated.

For this reason, conventionally, a sensor with a wide measurement range and low accuracy is used in the initial stage of blending (rough blending), and a sensor with a narrow measurement range and high accuracy is used in the final stage of blending to the target viscosity (precise blending). I needed it. As described above, conventionally, viscosity sensors with different measurement ranges are required in order to enable a wide range of viscosity measurements.

Therefore, in the blending method according to the embodiment, the viscosity sensor (wide measurement range, low accuracy) used for rough blending is omitted by measuring the viscosity from the supply time of the stock solution.

Specifically, in the preparation method according to the embodiment, first, the supply time is measured when a specified amount of the stock solution is supplied from the stock solution tank 100 to the preparation tank 300 at a constant pressure. Subsequently, in the preparation method, the viscosity of the stock solution is measured based on the measured supply time. Then, in the preparation method, the diluted liquid is supplied to the preparation tank 300 based on the measured viscosity, thereby preparing the prepared liquid with the target viscosity.

In other words, in the preparation method according to the embodiment, attention is focused on the relationship in which the supply time is proportional to the viscosity when a prescribed amount of the stock solution is supplied at a constant pressure. Specifically, the longer the supply time, the higher the viscosity of the stock solution, and the shorter the supply time, the lower the viscosity of the stock solution.

The viscosity measured from the supply time is used during rough blending, and the viscosity sensor VS1 is used during fine blending to match the target viscosity. Thereby, the accuracy of adjustment to the target viscosity can be ensured.

As described above, in the preparation method according to the embodiment, by measuring the viscosity from the supply time of the stock solution, a viscosity sensor used during rough preparation is not required. Therefore, according to the compounding method according to the embodiment, the cost of the apparatus can be suppressed.

Next, the configuration of the control device 10 included in the preparation device 1 according to the embodiment will be described with reference to FIG. 2 . FIG. 2 is a block diagram showing a configuration example of the control device 10 according to the embodiment. As shown in FIG. 2 , the control device 10 includes a control section 20 and a storage section 30 .

Here, the control device 10 includes, for example, a computer and various circuits having a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), flash memory, input/output ports, and the like.

The CPU of the computer functions as an acquisition unit 21, a measurement unit 22, a calculation unit 23, and a valve control unit 24 of the control unit 20 by reading and executing programs stored in the ROM, for example.

In addition, at least one or all of the acquisition unit 21, the measurement unit 22, the calculation unit 23, and the valve control unit 24 of the control unit 20 may be implemented as hardware such as ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array). It can also be configured with

Also, the storage unit 30 corresponds to a RAM or a flash memory. The RAM and flash memory can store viscosity map information 31, compounding ratio map information 32, various program information, and the like. Note that the control device 10 may acquire the above-described programs and various information via other computers or portable recording media connected via a wired or wireless network.

The viscosity map information 31 is information for measuring the viscosity by the measuring unit 22, which will be described later. FIG. 3 is a diagram showing an example of the viscosity map information 31. As shown in FIG. The viscosity map information 31 shown in FIG. 3 is generated in advance based on experimental results or the like. As shown in FIG. 3, the viscosity map information 31 is map information in which supply time and viscosity are associated. The supply time is the time during which a specified amount of the stock solution is supplied to the mixing tank 300 . Viscosity is the viscosity of the stock solution.

As shown in FIG. 3, in the viscosity map information 31, the longer the supply time, the higher the viscosity. That is, there is a proportional relationship between the supply time and the viscosity.

The blending ratio map information 32 is information for calculating the amount of diluent necessary for blending the blended liquid with the target viscosity. FIG. 4 is a diagram showing an example of the compounding ratio map information 32. As shown in FIG. The compounding ratio map information 32 shown in FIG. 4 is generated in advance based on experimental results or the like. As shown in FIG. 4, the compounding ratio map information 32 is map information in which the viscosity of the stock solution and the dilution amount of the diluent are associated with each other.

As shown in FIG. 4, in the compounding ratio map information 32, the higher the stock solution viscosity, the higher the dilution amount. That is, there is a proportional relationship between the stock solution viscosity and the amount of dilution.

Next, each function of the control unit 20 (acquisition unit 21, measurement unit 22, calculation unit 23, and valve control unit 24) will be described.

Acquisition unit 21 acquires various types of information. For example, the acquiring unit 21 acquires sensor value information of the pressure sensor PS1 provided in the undiluted solution tank 100 and the pressure sensor PS2 provided in the diluent tank 200 .

In addition, the acquisition unit 21 acquires information on the sensor value of the viscosity sensor VS1 provided in the preparation tank 300 and the sensor values of the liquid level sensors HSh and HSl. In addition, the acquisition unit 21 acquires liquid temperature information of the undiluted liquid, the diluted liquid, and the prepared liquid detected by a liquid temperature sensor (not shown). The acquisition unit 21 also acquires information about the sensor value of a pressure sensor PS3 provided in the cleaning tank 500 (see FIG. 6), which will be described later.

The measurement unit 22 measures various information. For example, the measurement unit 22 measures the supply time required for supplying a specified amount of the concentrate from the concentrate tank 100 to the preparation tank 300 . Specifically, the measurement unit 22 measures the time from opening to closing of the first solenoid valve V1 provided in the concentrate supply path 110 at the time of initial supply of the concentrate as the supply time.

More specifically, the measurement unit 22 measures the time from when the undiluted solution starts to be supplied until the liquid level sensor HSl in the mixing tank 300 reaches the first liquid level height as the supply time. That is, the prescribed amount is the amount up to the first liquid level in the mixing tank 300 .

Then, the measurement unit 22 refers to the viscosity map information 31 and measures the viscosity of the concentrate from the measured supply time. Note that the measurement unit 22 may correct the measured viscosity according to the temperature of the stock solution supplied to the preparation tank 300 . As a result, even if the liquid temperature of the stock solution rises (or falls) in the mixing tank 300 after being supplied, the viscosity can be determined with high accuracy.

The measurement unit 22 also measures the pressurization time until the undiluted solution tank 100 is pressurized to the specified pressure by the pump P1. Specifically, the measurement unit 22 measures the time from when the pressure valve V10 opens until the sensor value of the pressure sensor PS1 reaches the specified pressure as the pressurization time. Since the amount of compressed air supplied is kept constant by the pressure regulator R1, the lower the liquid level in the undiluted solution tank 100, the longer the pressurization time.

The measuring unit 22 also measures the pressurization time until the diluent tank 200 is pressurized to the specified pressure by the pump P2. Specifically, the measurement unit 22 measures the time from when the pressure valve V20 is opened until the sensor value of the pressure sensor PS2 reaches the specified pressure as the pressurization time. Since the amount of compressed air supplied is kept constant by the pressure regulator R2, the lower the liquid level in the diluent tank 200, the longer the pressurization time.

The calculator 23 calculates various information. For example, the calculation unit 23 calculates the initial supply amount of the diluent during rough preparation based on the viscosity of the stock solution measured by the measurement unit 22 . Specifically, the calculator 23 refers to the compounding ratio map information 32 and calculates the initial supply amount of the diluent from the measured viscosity of the stock solution.

It is preferable to set the initial supply amount slightly smaller than the dilution amount in the compounding ratio map information 32 . As a result, at the end of rough blending, a blended solution with a viscosity slightly higher than the target viscosity can be blended, so that it is possible to shorten the blending time during precision blending in the later stage and suppress the hunting phenomenon that causes the target viscosity to fluctuate.

Further, the calculation unit 23 calculates the supply amount of the undiluted liquid or the diluted liquid during precision preparation based on the current viscosity of the prepared liquid detected by the viscosity sensor VS1 provided in the preparation tank 300 (hereinafter referred to as current viscosity). do. For example, when the current viscosity is the same as the target viscosity, the calculator 23 calculates the supply amount of the stock solution or the diluted solution as zero. That is, the preparation of the prepared liquid is completed.

Further, for example, when the current viscosity is higher than the target viscosity, the calculator 23 calculates the supply amount of the diluent based on the deviation between the current viscosity and the target viscosity. Specifically, the calculation unit 23 performs PID calculation for performing PID control to increase the supply amount as the deviation is larger, and calculates the supply amount of the diluent based on the calculation result.

Further, for example, when the current viscosity is lower than the target viscosity, the calculation unit 23 calculates the supply amount of the concentrate based on the deviation between the current viscosity and the target viscosity. Then, the calculation unit 23 performs PID calculation for performing PID control to increase the supply amount as the deviation is larger, and calculates the supply amount of the concentrate based on the calculation result.

Note that the calculation unit 23 may correct the supply amounts of the stock solution and the diluent at the time of rough preparation and fine preparation based on the liquid level of the stock solution tank 100 and the diluent tank 200 . Specifically, the calculator 23 calculates the liquid level of the tank (the undiluted liquid tank 100 or the diluent tank 200) based on the pressurization time measured by the measuring section 22. FIG. As a result, the liquid level can be detected with high accuracy with a simple configuration.

Then, the calculator 23 corrects the water head difference based on the calculated liquid level height, and corrects the calculated supply amount based on the corrected water head difference. Thereby, the supply amount can be calculated with high accuracy.

The valve control section 24 controls the first solenoid valve V1 or the second solenoid valve V2 based on the supply amount calculated by the calculation section 23 . Specifically, the valve control unit 24 opens the first solenoid valve V1 or the second solenoid valve V2 for a period of time corresponding to the PID calculation result based on the deviation of the current viscosity and the target viscosity. supply only.

That is, the valve control unit 24 controls the opening and closing time of the first solenoid valve V1 or the second solenoid valve V2 based on the deviation between the current viscosity of the compounded liquid and the target viscosity, so that the stock solution to the compounding tank 300 and control the amount of diluent supplied. In this way, by controlling the supply amount by the opening/closing time of the electromagnetic valve using the PID calculation result, the supply amount of the stock solution and the diluted solution can be controlled with high precision in the batch-type preparation apparatus 1 .

Next, with reference to FIG. 5, the preparation method of the prepared liquid will be described more specifically. FIG. 5 is an explanatory diagram of the preparation method of the prepared liquid. As shown in FIG. 5, the blending method of the blended liquid is composed of two steps of coarse blending and precision blending.

The rough blending step is a step of blending the blended liquid to the vicinity of the target viscosity. Specifically, the control device 10 supplies the diluent so that the viscosity is higher than the target viscosity based on the viscosity of the stock solution measured based on the supply time. More specifically, the control device 10 supplies the diluent in such an amount that the viscosity of the prepared liquid is less than the threshold TH1.

Precision blending is a step of blending a blended liquid having a viscosity lower than the threshold TH1 so as to have a target viscosity. Specifically, the control device 10 supplies the diluent to the preparation tank 300 based on the measurement result of the viscosity sensor VS1 of the prepared liquid after supplying the diluent, thereby preparing the prepared liquid with the target viscosity.

More specifically, the control device 10 gradually brings the viscosity of the prepared liquid closer to the target viscosity by supplying a small amount of the diluent in multiple times. In this way, by blending the blended liquid by rough blending and fine blending, the blended liquid can be blended with high accuracy and with a target viscosity.

In addition, the control device 10 controls the supply amount of the diluent and the stock solution at the time of precision preparation according to the supply time. That is, the control device 10 controls the supply amount of the liquid based on the supply time while the supply pressure of the liquid from the undiluted liquid tank 100 and the diluent tank 200 to the preparation tank 300 is kept constant. Since this eliminates the need for a sensor or the like for detecting the supply amount, the cost of the apparatus can be suppressed.

Next, the cleaning process of the mixing tank 300 will be described with reference to FIGS. 6 and 7. FIG. 6 and 7 are explanatory diagrams of the cleaning process of the mixing tank 300. FIG. As shown in FIGS. 6 and 7 , the brewing device 1 further includes a brewed tank 400 and a washing tank 500 .

The compounded tank 400 is a tank that stores the compounded liquid compounded by the compounding tank 300 . The prepared liquid stored in the prepared tank 400 is sent to a coating device that applies a moisture-proof material to the printed circuit board.

The cleaning tank 500 is a tank that stores cleaning liquid for cleaning the mixing tank 300 . Note that the washing liquid is a diluent. Also connected to the cleaning tank 500 are a pump P3, a pressure regulator R3, a pressure valve V40, and a pressure sensor PS3.

Pump P3 generates compressed air for pressurizing the inside of cleaning tank 500 . The pressure regulator R3 supplies the compressed air generated by the pump P3 to the cleaning tank 500 at a constant pressure. The pressure valve V40 is, for example, an electromagnetic valve. A pressure sensor PS3 detects the pressure inside the pressurized cleaning tank 500 . With such a configuration, the inside of the cleaning tank 500 is pressurized with a constant pressure.

The cleaning tank 500 supplies the diluent stored in the cleaning tank 500 to the preparation tank 300 through the outlet 320 when the electromagnetic valve V50 is opened under the control of the control device 10 . Note that FIG. 6 shows a case where the diluted liquid, which is the cleaning liquid, is supplied to the mixing tank 300 up to the second liquid level (sensor value of the liquid level sensor HSh).

After the mixing tank 300 is filled with the cleaning liquid, the control device 10 drives the stirring device 310 to stir and wash the inside of the mixing tank 300 . After stirring for a certain period of time, the controller 10 stops the stirring device 310 and opens the electromagnetic valve V50 to move the cleaning liquid from the mixing tank 300 to the cleaning tank 500 . At this time, the pump P3 is stopped, and the washing liquid is moved to the washing tank 500 by its own weight.

In addition, after performing the washing process a predetermined number of times, in other words, when the content of the preparation liquid contained in the washing liquid reaches or exceeds a predetermined amount, the washing liquid is discharged from the discharge valve 510, and a new diluent is added. replace with

In this way, in the cleaning process after the preparation liquid is discharged, the control device 10 supplies the diluent, which is the cleaning liquid, from the cleaning tank 500 through the outlet 320 to the preparation tank 300, and after washing, through the outlet 320 to discharge the cleaning liquid from the blending tank 300 to the cleaning tank 500 .

As a result, the residue in the mixing tank 300 and the residue near the discharge port 320 can be washed away, so that the cleaning effect can be enhanced. In addition, by using a diluent as the cleaning liquid, the influence of the cleaning liquid in the next step (next batch) can be eliminated.

Next, with reference to FIG. 8, a method of stirring the prepared liquid in the pipe downstream of the outlet 320 will be described. FIG. 8 is an explanatory diagram of a stirring method in a pipe positioned downstream from the discharge port 320. As shown in FIG. As shown in FIG. 8, downstream of the discharge port 320 in the preparation tank 300, there is a discharge path 330 for discharging the prepared liquid to the prepared tank 400 (an example of the outside), and a branch path 340 branched from the discharge path 330. is connected.

In this embodiment, the branch path 340 is connected to a bubble supply device 600 that supplies air bubbles from the branch path 340 toward the outlet 320 . The bubble supply device 600 comprises a pump P4, a manual bubble V60 and a non-return valve V70. The check valve V70 is a valve that prevents the prepared liquid from flowing back from the branch path 340 to the pump P4 side.

The bubble supply device 600 intermittently generates compressed air from the pump P4 under the control of the control device 10 and supplies the compressed air to the branch path 340 to generate air bubbles. Then, the generated air bubbles go to the discharge port 320 on the upstream side and are degassed above the mixing tank 300 .

That is, the control device 10 supplies air bubbles from the bubble supply device 600 to agitate the prepared liquid filled between the branch path 340 and the discharge port 320 . As a result, the prepared liquid in the pipe can be agitated with high precision, and pipe loss can be reduced. The strength of air bubbles (air volume) and completion time can be adjusted according to the material used.

Next, processing procedures of processing executed by the compounding apparatus 1 according to the embodiment will be described with reference to FIGS. 9 to 12. FIG. 9 to 12 are diagrams showing processing procedures of processing executed by the compounding apparatus 1 according to the embodiment.

First, with reference to FIG. 9, a processing procedure for rough preparation will be described.

As shown in FIG. 9, the preparation apparatus 1 first pressurizes the insides of the stock solution tank 100 and the diluted solution tank 200 (step S101). Subsequently, the preparation apparatus 1 starts supplying the concentrate from the concentrate tank 100 to the preparation tank 300 (step S102).

Subsequently, the preparation apparatus 1 determines whether or not the stock solution stored in the preparation tank 300 has reached a specified amount (step S103). When the stock solution reaches the specified amount (step S103: Yes), the preparation device 1 ends the supply of the stock solution to the preparation tank 300 (step S104). Note that when the stock solution has not reached the specified amount (step S103: No), the preparation apparatus 1 returns to step S102.

Subsequently, the blending apparatus 1 measures the viscosity of the stock solution from the supply time of the specified amount of the stock solution (step S105). Subsequently, the preparation apparatus 1 corrects the measured viscosity based on the liquid temperature of the stock solution stored in the preparation tank 300 (step S106).

Subsequently, the compounding apparatus 1 calculates the initial supply amount of the diluent from the corrected viscosity (step S107). Subsequently, the preparation apparatus 1 supplies the calculated initial supply amount of diluent to the preparation tank 300 (step S108). Subsequently, the preparation device 1 stirs the prepared liquid by the stirring device 310 (step S109), and ends the process.

Next, with reference to FIG. 10, a processing procedure during precision preparation will be described.

As shown in FIG. 10, the blending device 1 first measures the viscosity of the blended liquid after rough blending by the viscosity sensor VS1 (step S201). Subsequently, the compounding apparatus 1 determines whether or not the target viscosity is the same as the measured current viscosity (step S202).

When the target viscosity and the current viscosity are the same (step S202: Yes), the compounding apparatus 1 ends the precision compounding process. On the other hand, when the target viscosity and the current viscosity are different (step S202: No), the blending apparatus 1 determines whether the current viscosity is higher than the target viscosity (step S203).

When the current viscosity is higher than the target viscosity (step S203: Yes), the blending apparatus 1 performs PID calculation for supplying the diluent (step S204), and calculates the supply amount of the diluent (step S205).

Subsequently, the preparation apparatus 1 starts supplying the diluent (step S206), and determines whether or not the calculated supply amount has been reached (step S207). When the supply amount has been reached (step S207: Yes), the preparation device 1 returns to step S202. If the supply amount has not been reached (step S207: No), the preparation apparatus 1 repeats step S207 until the supply amount is reached.

On the other hand, in step S203, when the current viscosity is lower than the target viscosity (step S203: No), the compounding apparatus 1 performs PID calculation for supplying the concentrate (step S208), and calculates the supply amount of the concentrate (step S209).

Subsequently, the preparation apparatus 1 starts supplying the stock solution (step S210), and determines whether or not the calculated amount of supply has been reached (step S211). When the supply amount has been reached (step S211: Yes), the preparation device 1 returns to step S202. If the supply amount has not been reached (step S211: No), the preparation apparatus 1 repeats step S211 until the supply amount is reached.

Next, with reference to FIG. 11, a processing procedure for correcting the supply amount based on the liquid level of the undiluted liquid tank 100 or diluent tank 200 will be described. In FIG. 11, the undiluted solution tank 100 or the diluent tank 200 is collectively called a tank, and the undiluted solution and the diluted solution are collectively called a liquid.

As shown in FIG. 11, the preparation device 1 first calculates the amount of liquid to be supplied (step S301). Note that step S301 corresponds to, for example, step S107 shown in FIG. 9 and steps S205 and S209 shown in FIG.

Subsequently, the brewing apparatus 1 starts pressurizing the tank (step S302), and determines whether or not the pressure inside the tank has reached a specified pressure (step S303).

When the pressure in the tank reaches the specified pressure (step S303: Yes), the brewing apparatus 1 ends the pressurization of the tank (step S304). If the pressure in the tank has not reached the specified pressure (step S303: No), the preparation apparatus 1 repeats step S303.

Subsequently, the preparation apparatus 1 calculates the liquid level height of the liquid stored in the tank from the pressurization time (step S305), and corrects the water head difference from the calculated liquid level height (step S306). Subsequently, the blending apparatus 1 corrects the supply amount from the corrected water head difference (step S307), and ends the process.

Next, with reference to FIG. 12, the processing procedure of the cleaning process will be described.

As shown in FIG. 12, the compounding apparatus 1 first completes precision compounding (step S401). Subsequently, the compounding apparatus 1 discharges the compounded liquid from the compounding tank 300 to the compounded tank 400 (step S402).

Subsequently, the preparation apparatus 1 closes the solenoid valves (the first solenoid valve V1 and the second solenoid valve V2) of the undiluted solution tank 100 and the diluent tank 200 (step S403). Subsequently, the blending apparatus 1 pressurizes the inside of the cleaning tank 500 (step S404).

Subsequently, after pressurizing the cleaning tank 500 to a certain pressure, the blending apparatus 1 supplies the diluent, which is a cleaning liquid, to the blending tank 300 (step S405). Subsequently, the blending apparatus 1 starts stirring the blending tank 300 (step S406).

Subsequently, the blending apparatus 1 finishes stirring (step S407), discharges the washing liquid into the washing tank 500 (step S408), and finishes the process.

As described above, the preparation device 1 according to the embodiment includes the undiluted solution tank 100 (first tank), the diluted solution tank 200 (second tank), the preparation tank 300, and the control device 10 . The concentrate tank 100 contains the concentrate (first liquid). The diluent tank 200 contains a diluent (second liquid) having a lower viscosity than the stock solution. The preparation tank 300 stirs the stock solution supplied from the stock solution tank 100 and the diluent supplied from the diluent tank 200 to prepare a preparation solution. The control device 10 measures the viscosity of the undiluted solution based on the supply time when a specified amount of undiluted solution is supplied from the undiluted solution tank 100 to the preparation tank 300 at a constant pressure, and dilutes the diluted solution into the preparation tank 300 based on the measured viscosity. By supplying to , the prepared liquid is prepared with the target viscosity. This eliminates the need for a viscosity sensor that is used during rough blending, thereby reducing the cost of the apparatus.

Further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspects of the invention are not limited to the specific details and representative embodiments so shown and described. Accordingly, various changes may be made without departing from the spirit or scope of the general inventive concept defined by the appended claims and equivalents thereof.

1 Blending device 10 Control device 20 Control unit 21 Acquisition unit 22 Measurement unit 23 Calculation unit 24 Valve control unit 30 Storage unit 31 Viscosity map information 32 Mixing ratio map information 100 Undiluted solution tank 110 Undiluted solution supply path 200 Diluent tank 210 Diluent supply path 300 Mixing tank 310 Stirrer 320 Discharge port 330 Discharge path 340 Branch path 400 Mixed tank 500 Washing tank 510 Discharge valve 600 Bubble supply device HSh, HSl Liquid level sensor P1-P4 Pump PS1-PS3 Pressure sensor R1-R3 Pressure regulator V1 First solenoid valves V10, V20, V40 Pressure valve V2 Second solenoid valves V30, V60 Manual valve V50 Solenoid valve V70 Check valve VS1 Viscosity sensor

Claims (6)

a first tank containing a first liquid;
a second tank containing a second liquid having a viscosity lower than that of the first liquid;
a mixing tank for mixing the first liquid supplied from the first tank and the second liquid supplied from the second tank to prepare a mixed liquid;
a viscosity sensor provided in the preparation tank for measuring the viscosity of the prepared liquid;
The viscosity of the first liquid is obtained based on the supply time when a specified amount of the first liquid is supplied from the first tank to the mixing tank at a constant pressure, and the target is obtained based on the viscosity of the first liquid. Rough blending is performed by supplying and blending the second liquid so that the viscosity is higher than the viscosity, and after the rough blending, the second liquid is added to the blended liquid based on the measurement result of the viscosity sensor of the blended liquid. and a control device that performs precise blending for blending the blended liquid with a target viscosity by supplying the blended liquid to a blending tank. a first tank containing a first liquid;
a second tank containing a second liquid having a viscosity lower than that of the first liquid;
a mixing tank for mixing the first liquid supplied from the first tank and the second liquid supplied from the second tank to prepare a mixed liquid;
a viscosity sensor provided in the preparation tank for measuring the viscosity of the prepared liquid;
A control device provided in a compounding device having
The viscosity of the first liquid is obtained based on the supply time when a specified amount of the first liquid is supplied from the first tank to the mixing tank at a constant pressure, and the target is obtained based on the viscosity of the first liquid. Rough blending is performed by supplying and blending the second liquid so that the viscosity is higher than the viscosity, and after the rough blending, the second liquid is blended based on the measurement result of the viscosity sensor of the blended liquid. By supplying to the tank, precision blending is performed to blend the blended liquid with the target viscosity,
measuring the viscosity of the first liquid using viscosity map information in which the supply time and the viscosity of the first liquid are associated with each other;
A control device characterized by: The rough blending is
3. The control device according to claim 2, wherein a supply amount of the second liquid is determined, and the determined supply amount of the second liquid is supplied to the blending tank for blending. Liquid level height of the second liquid in the second tank based on pressurization time until the inside of the second tank containing the second liquid reaches a specified pressure when air is supplied at a constant supply rate and correcting the water head difference based on the calculated liquid level height of the second liquid, and correcting the supply amount of the second liquid based on the corrected water head difference. Item 4. The control device according to item 3. a first tank containing a first liquid;
a second tank containing a second liquid having a viscosity lower than that of the first liquid;
a mixing tank for mixing the first liquid supplied from the first tank and the second liquid supplied from the second tank to prepare a mixed liquid;
a viscosity sensor provided in the preparation tank for measuring the viscosity of the prepared liquid;
Based on the map information representing the correspondence relationship between the supply time and the viscosity of the first liquid when the specified amount of the first liquid is supplied from the first tank to the mixing tank at a constant pressure, and the viscosity of the first liquid. Obtain the viscosity of one liquid, perform rough blending by supplying the second liquid so that the viscosity is higher than the target viscosity based on the viscosity of the first liquid, and perform the blending after the rough blending. a control device that performs precise blending for blending the blended liquid with a target viscosity by supplying the second liquid to the blending tank based on the measurement result of the viscosity sensor of the liquid;
A compounding device comprising: a first tank containing a first liquid;
a second tank containing a second liquid having a viscosity lower than that of the first liquid;
a mixing tank for mixing the first liquid supplied from the first tank and the second liquid supplied from the second tank to prepare a mixed liquid;
a viscosity sensor provided in the preparation tank for measuring the viscosity of the prepared liquid;
A brewing method performed by a brewing device comprising:
The viscosity of the first liquid is obtained based on the supply time when a specified amount of the first liquid is supplied from the first tank to the mixing tank at a constant pressure, and the target viscosity is obtained based on the viscosity of the first liquid. performing rough blending in which the second liquid is supplied and blended so that the viscosity thereof is higher than the viscosity of By supplying to a tank, performing precision blending to blend the blended liquid with a target viscosity
A compounding method characterized by

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