JP7194028B2 - Quantitative filling device for liquid to be measured - Google Patents

Description

The present invention is a quantitative filling device for liquid to be measured, which fills a supply destination such as a product tank, liquid cylinder, etc. with a specified amount of liquid to be measured via a terminal piping line branching into a large number. The present invention relates to a quantitative filling device for a liquid to be measured which can easily cope with

Conventionally, when a liquid to be measured such as a cleaning solvent stored in a large amount in a storage tank is filled into supply destinations such as a large number of small tanks and cylinders arranged at distant positions, the liquid to be measured is supplied to each supply. A fixed quantity filling device is used that supplies only a specified quantity value according to the previous demand quantity. In order to reduce the cost of this type of quantitative filling device, there is a single-liquid multi-supply device that controls the flow rate of one liquid type to be measured with a single flow meter placed in the main piping line. A batch control system (hereinafter referred to as a batch system) is widespread.

This batch system 51 comprises, as shown in FIG. 55 , terminal piping lines 56 branched from the main piping line 53 and connected to supply destinations 60 , and opening/closing valves 57 arranged in each terminal piping line 56 . The batch system 51 also has a preset counter PC provided corresponding to each of the terminal piping lines 56 described above, and an integrated control section 61 for operating the preset counter PC and the pump 54 .

The preset counter PC operates the opening/closing valve 57 provided in each terminal piping line 56, and has a start switch (not shown) for transmitting a start signal. The open/close valve 57 is configured to open. The preset counter PC acquires a weighing signal from the flow meter 55, calculates a weighing value, and closes the on-off valve 57 when the weighing value reaches a specified value, which will be described later.

The overall control section 61 is configured to operate the pump 54 in response to a start signal from each preset counter PC. Further, when the preset counter PC detects that the weighed value has reached the specified amount, the integrated control unit 61 stops the pump 54 and finishes the constant filling. In addition, the overall control unit 61 manages the quantitative filling of a plurality of preset counters PC, and even if the start signals are received from the plurality of preset counters PC at the same time, the corresponding preset counters PC are operated according to a predetermined priority. , and other preset counters PC in a standby state.

According to the batch system 51, when a start signal is transmitted from any of the preset counter PCs arranged corresponding to each terminal piping line 56, the opening/closing valve 57 of the terminal piping line 56 corresponding to the preset counter PC is activated. is released. In response to the transmission of the start signal, the integrated control unit 61 drives the pump 54 and transmits the measurement signal transmitted from the flow meter 55 to the preset counter PC. The preset counter PC calculates a weight value from the obtained weight signal, and closes the open/close valve 57 when the weight value reaches a specified value. At the same time, the general control unit 61 closes the pump 54, and the liquid to be measured is supplied to the supply destination 60 of the terminal piping line 56 corresponding to the preset counter PC. In addition, the integrated control unit 61 transmits an operation prohibition signal to the printer other than the preset counter PC so that the printer other than the preset counter PC does not perform the quantitative filling while performing the quantitative filling.

JP 2004-118556 A

In the batch system 51, as described above, the supply destination 60 connected to each terminal piping line 56 can be filled with the liquid to be measured in a prescribed amount value corresponding to the demand amount. However, when the terminal piping line 56 is added along with the extension of the main piping line 53, not only must the control program incorporated in the integrated control unit 61 be corrected each time, but also the integrated control unit 61 itself can Each expansion is a large-scale one. As a result, there is a problem that the expansion requires a large expansion cost and construction time. In addition, the number of preset counters PC to be controlled by the integrated control unit 61 is also limited, and the terminal piping line 56 that can be added is also limited. Therefore, if the number of terminal piping lines 56 increases, not only will a plurality of integrated control units 61 be required, but control for managing these integrated control units 61 will also be required, and the construction cost of the batch system 51 will increase. There is a problem.

The present invention was invented to solve all of the above problems, and includes a main piping line in which a pump and a flow meter are arranged, a terminal piping line connected to the main piping line, and an open/close valve arranged in the terminal piping line. A valve is provided, and a main preset counter is arranged corresponding to the terminal piping line, and the main preset counter drives the pump and opens/closes the terminal piping line corresponding to the main preset counter in response to an input signal from the downstream side. Either control the opening and closing of the flow meter to acquire the metering signal of the flow meter and fill a fixed amount of the liquid to be measured, or control the pump drive and output the metering signal of the flow meter to the downstream side. It is characterized by being configured to

According to the above-described configuration, when there is no input signal from the downstream side to the main preset counter, it controls the driving of the pump of the main piping line and controls the opening and closing of the opening and closing valve of the terminal piping line where the main preset counter is arranged. Then, a fixed amount of liquid to be measured can be filled. In addition, when an input signal such as an operation permission request signal requesting operation permission or a pump drive command signal instructing the pump to be driven is input from the downstream side of the main preset counter, the pump is driven and the flowmeter is measured. A signal can be output downstream of the main preset counter. As a result, an expansion filling device having a post-installation preset counter can be connected to the downstream side of the main preset counter, and a quantitative filling unit can be provided in consideration of expansion. Furthermore, even if additional filling devices are connected downstream of the main preset counter, there is no need to integrally control these filling devices, and constant filling can be performed in each terminal piping line. In addition, since the integrated control unit is not required, there is no need to change the control system of the existing equipment such as the integrated control unit when adding terminal piping lines branching from the main piping line, and special expansion costs are not required. It is possible to provide a low-cost batch system that takes into consideration future expansion, because the construction time required for changing the control program is no longer required.

In addition, the present invention comprises a main piping line in which a pump and a flow meter are arranged, a terminal piping line branched from the main piping line into a large number and connected to a supply destination, and an opening and closing valve arranged in each terminal piping line, A post-installation preset counter is arranged corresponding to the terminal piping line, and the post-installation preset counter outputs a signal for controlling the driving of the pump to the upstream side in response to an input signal from the downstream side and the post-installation preset counter. While controlling the opening and closing of the open/close valve of the terminal piping line corresponding to the counter, the measurement signal of the flow meter from the upstream side is acquired to perform fixed amount filling of the liquid to be measured, or the signal to control the driving of the pump is sent to the upstream side. It is characterized in that it is configured to either output the metering signal of the flow meter to a downstream post-installed preset counter while outputting the metering signal.

According to the above configuration, when there is no input signal from the downstream side of the post-installed preset counter, the signal for driving the pump on the upstream side is controlled and the opening/closing valve of the terminal piping line where the post-installed preset counter is arranged is controlled. It is possible to control the opening and closing to perform a fixed amount filling of the liquid to be measured. Further, when an input signal such as an operation permission request signal requesting operation permission or a pump drive command signal instructing to drive the pump is input from the downstream side, a signal for driving the pump is output to the upstream side. The metering signal of the flow meter can be output downstream. As a result, post-installation preset counters having the same structure can be sequentially connected to the downstream side of the post-installation preset counter, and an expansion unit for metering filling can be provided in consideration of expansion of the metering filling device. Furthermore, even if these post-installed preset counters are sequentially connected, there is no need to integrally control them. There is no need to change the system, and there is no need for special expansion costs or construction time required for changing the control program, so it is possible to provide an inexpensive quantitative filling system in consideration of future expansion.

Furthermore, the present invention comprises a main piping line in which a pump and a flow meter are arranged, a terminal piping line branched from the main piping line into many and connected to a supply destination, and an opening and closing valve arranged in each terminal piping line, A main preset counter is arranged corresponding to the most upstream terminal piping line, a post-installed preset counter is arranged corresponding to another terminal piping line arranged downstream of the main preset counter, and the main preset counter , according to the input signal from the post-installed preset counter, controls the driving of the pump and the opening and closing of the opening and closing valve of the terminal piping line corresponding to the main preset counter, acquires the measurement signal of the flow meter, and quantifies the liquid to be measured. It is configured to either perform filling or to control the driving of the pump and to output a metering signal of the flow meter to a post-installed preset counter on the downstream side, the post-installed preset counter receiving an input from the downstream side. In response to the signal, output a signal to control the driving of the pump upstream, and acquire the metering signal of the flow meter from the upstream side while controlling the opening and closing of the opening and closing valve of the terminal piping line corresponding to the post-installed preset counter. or to output a signal for controlling the driving of the pump to the upstream side and to output the metering signal of the flow meter to the downstream post-installed preset counter. It is characterized by being

According to the quantitative filling device for the liquid to be measured having the above-described configuration, even if the terminal piping line is added along with the extension of the main piping line, the corresponding post-installed preset counters can be sequentially connected downstream. Quantitative filling can be done in terminal piping lines. Therefore, even if a main preset counter arranged corresponding to the terminal piping line and a large number of post-installed preset counters are connected, an integrated control section for integrated control of these is not required. This eliminates the need to modify the control program incorporated in the integrated control unit, eliminates the need for special expansion costs and the construction time required to change the control program for the expansion, and reduces the cost of quantitative filling considering future expansion. You can build a system. In addition, since the integrated control unit is not required, the number of post-installed preset counters is not limited from the control point of view, so the number of terminal pipe lines that can be added is not limited.

Further, the main preset counter according to the present invention has a configuration for outputting an operation permission signal to the post-installed preset counter when an operation permission request signal is input from the post-installed preset counter, and the post-installed preset counter outputs a start signal. , a configuration for transmitting an operation permission request signal to the upstream side by the start signal, a configuration for outputting a valve opening command signal to the corresponding opening and closing valve when the operation permission signal is input from the upstream side, and a main preset counter and a configuration for outputting the operation permission signal input from the upstream side to the downstream side preset counter when the operation permission request signal is input from the downstream side preset counter before the operation permission signal is input. .

According to the above configuration of the present invention, a plurality of post-installed preset counters may simultaneously transmit start signals. In this case, an operation permission request signal is output from these post-installed preset counters to the upstream side. The post-installed preset counter outputs an operation permission signal from the upstream side to the post-installed preset counter on the downstream side without starting constant filling. As a result, even if a plurality of start signals are transmitted at the same time, the post-installed preset counter on the downstream side can be prioritized and constant filling can be performed. In addition, since it is not necessary to determine the order of priority of the post-installed preset counters in advance with respect to the transmission of the start signal, there is no need for an integrated control section that integrates these post-installed preset counters, thereby constructing an inexpensive quantitative filling system. be able to.

Further, the main preset counter or the post-installed preset counter according to the present invention is configured to store the state of the input signal and the state of the output signal when the power is turned off, and continue the subsequent processing according to these states when the power is turned off. Preferably, the input/output signals are processed to continue the series of metered fills. As a result, even if a sudden power failure occurs during fixed filling, emergency stop or temporary stop during fixed filling, the input state and output state of the preset counter before the power failure can be called up and interrupted from that state. A series of quantitative filling operations can be continued.

According to the present invention described above, there is provided a quantitative filling device for a liquid to be measured, which fills a supply destination such as a small tank, a cylinder, or the like with a prescribed amount of the liquid to be measured via a multi-branched terminal piping line, It is possible to provide a metered filling device for a liquid to be measured that can easily and inexpensively cope with the extension of each terminal piping line.

FIG. 4 is a flow diagram illustrating quantitative filling control of a post-installed preset counter used in the quantitative filling apparatus according to the embodiment of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram for explaining a quantitative filling device for liquid to be measured according to an embodiment of the present invention; 1 is a block diagram showing a schematic configuration of a main preset counter according to an embodiment of the invention; FIG. 1 is a block diagram showing a schematic configuration of a post-installed preset counter according to an embodiment of the present invention; FIG. FIG. 4 is a flow diagram illustrating quantitative filling control of a main preset counter used in the quantitative filling apparatus according to the embodiment of the present invention; FIG. 4 is a flow diagram of a subsequent preset counter transmission signal confirmation subroutine during quantitative filling in the main preset counter used in the quantitative filling apparatus according to the embodiment of the present invention. FIG. 4 is a flow diagram of a post-set counter transmission signal confirmation subroutine during fixed-quantity filling control in the post-set preset counter used in the quantitative filling apparatus according to the embodiment of the present invention. FIG. 4 is a signal state transition diagram of a main preset counter used in the quantitative filling device according to the embodiment of the present invention; FIG. 4 is a signal state transition diagram when a start signal is independently transmitted from a post-installed preset counter used in the quantitative filling apparatus according to the embodiment of the present invention. FIG. 2 is a signal state transition diagram of the most upstream post-set preset counter among the post-set preset counters used in the quantitative filling apparatus according to the embodiment of the present invention that simultaneously transmit a start signal. Schematic configuration diagram for explaining a conventional quantitative filling device for liquid to be measured

(embodiment)
A quantitative filling device for a liquid to be measured (hereinafter referred to as the present filling device) according to an embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 2, the filling apparatus 1 includes a storage tank 2 in which a liquid to be measured such as a cleaning solvent is stored, a main pipeline 3 connected to the storage tank 2, and a line adjacent to the main pipeline 3 in series. A pump 4 and a flow meter 5 arranged as one, a terminal piping line 6 branched from the main piping line 3 and connected to a supply destination 10, and an on-off valve 7 arranged in each terminal piping line 6. there is In addition, the filling apparatus 1 includes a main preset counter 8 (hereinafter referred to as a main PC) arranged corresponding to the terminal piping line 6a on the most upstream side among the terminal piping lines 6 described above, and other terminal piping lines 6. A post-installed preset counter 9 (hereinafter referred to as a post-installed PC) is arranged corresponding to each of them.

As shown in FIG. 3, the main PC 8 includes a main operating section 8a, a main computing section 8b, a main storage section 8c, a main display section 8d, a metering signal from the flowmeter 5 and an input signal from the post-installed PC 9. It has a main input portion 8e for receiving the power, and a main output portion 8f connected to the pump 4, the opening/closing valve 7, and the post-installed PC 9. As shown in FIG. The main operation unit 8a includes a start switch (not shown) for outputting a start signal, a temporary stop switch (not shown), an emergency stop switch (not shown), and various and a setting mode switch (not shown) for selecting a setting mode for setting a set value.

The main computing unit 8b operates at the same time as the power is turned on, and the main PC fixed amount filling control program (hereinafter referred to as the main program), which will be described later, and the main input unit 8e and the main output unit 8f when the power is turned on. It has a main return program (not shown) for returning to the main program, and a setting program (not shown) for setting various setting values including a prescribed amount value for constant filling. Further, the main storage section 8c is configured to store various set values including the measurement value calculated from the measurement signal of the flow meter 5 and the specified amount value required for constant filling. Further, the main display section 8d is configured to display the setting mode display when the setting mode is selected, the display when the operation is temporarily stopped, the display when the machine is stopped in an emergency, and the weighing value calculated from the weighing signal of the flowmeter 5.

The main input section 8e is configured to receive the metering signal of the flow meter 5 and various signals from the post-installed PC 9. As shown in FIG. Further, the main output unit 8f outputs a signal for controlling the driving of the pump 4 and the opening/closing of the opening/closing valve 7 to the opening/closing valve 7 arranged in the terminal pipe line 6a corresponding to the pump 4 and the main PC 8, respectively. It is configured to output the measurement signal of the flowmeter 5 and the operation permission signal described later to the post-installed PC 9 described above. These main input section 8e and main output section 8f, along with a post-installation input section 9e and a post-installation output section 9f, which will be described later, wait for a signal from the upstream side during quantitative filling in the main PC 8 or the post-installation PC 9, and finish the quantitative filling. It is configured to store the state of the input signal and the state of the output signal at the time of power interruption so that it can respond to an emergency stop or sudden power failure that occurs during work. As a result, the relevant state is determined at the time of start-up, and the input/output signals are processed so as to continue the subsequent processing according to the state by the main return program and the subsequent return program to be described later, thereby continuing a series of quantitative fillings. be able to.

All of the post PCs 9 have the same structure, and as shown in FIG. 4, they include a post operation unit 9a, a post operation unit 9b, a post storage unit 9c, and a post display unit 9d. there is Further, the post-installation PC 9 includes a post-installation input section 9e for inputting various signals from the main PC 8 or the post-installation PC 9 on the upstream side, that is, various signals from the upstream side and various signals from the post-installation PC 9 on the downstream side. The on-off valve 7 arranged in the terminal piping line 6 corresponding to the downstream side post-installation PC 9 and the post-installation output connected to the upstream main PC 8 or the upstream post-installation PC 9 (hereinafter referred to as the upstream side) and a portion 9f.

The rear operating section 9a has a start switch (not shown) for transmitting a start signal, a temporary stop switch (not shown), and an emergency stop switch (not shown). In addition, although not shown, the post-installation operation unit 9a has a setting mode switch for selecting a setting mode for setting various setting values including a specified amount value for constant filling. The supply destination 10 is configured to be able to set a specified amount value for constant filling.

The post-installation calculation unit 9b includes a post-installation PC quantitative filling control program (hereinafter referred to as a post-installation program) that operates at the same time as the power is turned on, and signals from the post-installation input unit 9e and the post-installation output unit 9f when the power is turned on. It has a post-installation return program (not shown) that returns to the post-installation program according to the state, and a setting program (not shown) that sets various setting values including a specified amount value for constant filling. Further, the post-installed storage unit 9c is configured to store various set values including the measurement value calculated from the measurement signal of the flowmeter 5 and the specified amount value required for constant filling. Further, the post-installed display section 9d is configured to display the setting mode display when the setting mode is selected, the displays during temporary stop and emergency stop, and the weighing value calculated from the weighing signal of the flowmeter 5. . Incidentally, the above-described post-installation calculation unit 9b and main calculation unit 8b may be high-performance CPUs or programmable logic controllers suitable for on-site work. When constructed, the main program, post-installation program and main return program, post-installation return program and setting program may be stored in the main storage section 8c and post-storage section 9c.

The post-installation input section 9e is configured to receive various signals from the post-installation PC 9 on the downstream side and the upstream side. In addition, the post-installation output unit 9f sends a signal for controlling the opening/closing of the open/close valve 7 of the terminal pipe line 6 corresponding to the post-installation PC 9, and a measurement signal of the flow meter 5 or an operation permission signal to the post-installation PC 9 on the downstream side. It is configured to output various signals from the post-installation PC 9 on the upstream side and from the post-installation PC 9 on the downstream side. These post-installed input section 9e and post-installed output section 9f are constructed so as to maintain their respective input states and output states even during power shutdown so as to respond to an emergency stop or sudden power failure.

The main program executes the following steps P1 to P13 as shown in FIG.
P1) Execute a post-PC transmission signal confirmation subroutine for the main PC (hereinafter referred to as a subroutine for the main PC).
P2) Determine whether or not the start signal is input, and return to P1 if the start signal is not input.
P3) Output a running signal to the post-installed PC.
P4) Output a valve open command signal to the open/close valve.
P5) Output a pump drive command signal to the pump.
P6) Acquire the metering signal of the flow meter.
P7) Calculate the measured value from the measured signal of the flow meter.
P8) Judge whether or not the weighing value has reached the specified amount value, and return to P6 if this has not reached the specified amount value.
P9) Stop the pump drive command signal to the pump.
P10) Output a valve closing command signal to the open/close valve.
P11) Stop the running signal to the post-installed PC.
P12) Output a display command signal for the weighing result to the display unit.
P13) End

The main PC subroutine is configured to execute the following steps Q1 to Q13 as shown in FIG.
Q1) Determine whether or not an operation permission request signal is input from the post-installed PC, and if not, jump to Q10.
Q2) Output a running signal to the post-installed PC.
Q3) Output an operation permission signal to the post-installed PC.
Q4) Determine whether or not there is an input of a pump drive command signal from the post-installed PC, and if not, jump to Q8.
Q5) Output a pump drive command signal to the pump.
Q6) Determine whether or not there is a metering signal input from the flowmeter, and if not, return to Q1.
Q7) Output a weighing signal to the post-installed PC and return to Q1.
Q8) Determine whether or not there is an output of a pump drive command signal to the pump, and if not, return to Q6.
Q9) Stop the pump drive command signal to the pump and return to Q6.
Q10) Determine whether or not there is an output of the running signal to the post-installed PC, and if not, jump to Q13.
Q11) Stop the operation permission signal to the post-installed PC.
Q12) Stop the running signal to the post-installed PC.
Q13) End

The post-installation program executes the following steps R1-18 as shown in FIG.
R1) Execute a post-PC transmission signal confirmation subroutine for post-install PC (referred to as sub-routine for post-install PC).
R2) Stop the operation permission request signal to the main PC or the upstream post-PC (hereinafter referred to as the upstream side).
R3) Determine whether or not there is an input of the running signal from the upstream side and whether or not there is an input signal of the start signal, and if not, return to R1.
R4) Output a running signal to the downstream post-installed PC.
R5) Output an operation permission request signal to the upstream side.
R6) Execute the post-PC subroutine.
R7) Determine whether or not an operation permission signal is input from the upstream side, and if not, return to R6.
R8) Outputs a valve open command signal to the open/close valve when the operation permission signal is input.
R9) Outputs a pump drive command signal to the upstream side.
R10) Acquire the metering signal of the flow meter.
R11) Calculate the measured value from the measured signal of the flow meter.
R12) Judge whether or not the weighed value has reached the specified quantity value, and if it has not reached the specified quantity value, return to R10.
R13) Stop the pump drive command signal to the upstream side.
R14) Output a valve close command signal to the open/close valve.
R15) Stop the operation permission request signal to the upstream side.
R16) Stop the running signal to the downstream post-PC.
R17) Output a display command signal for the weighing result to the display unit.
R18) End

The post-installed PC subroutine executes the following steps S1 to S18 as shown in FIG.
S1) It is determined whether or not there is an input of an operating signal from the main PC or an upstream post-installed PC (hereinafter referred to as upstream side), and if not, the process jumps to S3.
S2) Output a running signal to the downstream post-installed PC, and jump to S6.
S3) It is determined whether or not there is an output of the running signal to the downstream post-installed PC, and if not, the process jumps to S6.
S4) Determine whether or not a start signal has been input, and if so, jump to S6.
S5) Stop the running signal to the downstream post-installed PC.
S6) Determine whether or not there is an operation permission request signal input from the downstream post-installed PC, and if not, jump to S16.
S7) Output an operation permission request signal to the upstream side.
S8) Determine whether or not an operation permission signal is input from the upstream side, and if not, return to S1.
S9) Output an operation permission signal to the downstream post-installed PC.
S10) It is determined whether or not there is an input of a pump driving command signal from the downstream post-installed PC, and if not, the process jumps to S14.
S11) Output a pump drive command signal to the upstream side.
S12) Determine whether or not there is a weighing signal input from the upstream side, and if not, return to S1.
S13) Output a weighing signal to the downstream post-installed PC, and return to S1.
S14) It is determined whether or not there is an output of a pump drive command signal to the upstream side, and if not, the process returns to S12.
S15) Stop the pump drive command signal to the upstream side, and return to S12.
S16) It is determined whether or not an operation permission signal is output to the downstream post-installed PC, and if not, the process jumps to S18.
S17) Stop the operation permission signal to the downstream post-installed PC.
S18) End

In this filling apparatus, when the main preset counter 8 arranged corresponding to the most upstream side of the terminal piping line 6 branching from the main piping line 3 is turned on, the restoration program is activated. As a result, a state is restored in which a new fixed amount filling can be started, and the main PC subroutine (see FIG. 6) is executed as shown in FIG. That is, it is determined whether or not an operation permission request signal has been input from the post-installed PC 9, and if this is not input, it is determined whether or not an operating signal is being output to the post-installed PC 9. At this time, no running signal is output to the post-installed PC 9 (see the first half of FIGS. 8(a) and 8(b)), so a start signal from the main operation unit 8a is waited for.

In the above judgment, when an operation permission request signal is input from the post-installation PC 9, that is, when a quantitative filling start signal is transmitted from any of the post-installation PCs 9 on the downstream side, the operation signal is sent to the post-installation PC 9. It is output (refer to the first half of FIGS. 8(a) and (b)). At this time, an operation permission signal is output to the post-installed PC 9 following the operation signal (see the first half of FIG. 8(c)).

In this state, it is determined whether or not the pump drive command signal is input from the post-installed PC 9. If this is not input, it is determined whether the pump drive command signal is output and whether the metering signal is input from the flow meter. is judged. At this time, the pump drive command signal is not output and the weighing signal is not input, so the input of the pump drive command signal from the post-installed PC 9 is waited for.

When the pump drive command signal is input from the post-installed PC 9, the pump drive command signal is output to the pump 4, and the pump 4 is driven (see the first half of FIGS. 8(d) and (e)). After that, it waits for the measurement signal of the flow meter 5 to be input, and when this measurement signal is input (see the first half of FIG. 8(f)), it is output to the post-installed PC 9 (see the first half of FIG. 8(g) ).

After that, when the input of the pump drive command signal from the post-installation PC 9 stops, that is, when the weighing value on the post-installation PC 9 side reaches the specified value (see the latter half of FIGS. 9(n) and (h)), at this point Then, since the main PC 8 is outputting a drive command signal to the pump 4, the output is stopped (see the first half of FIGS. 8(d) and (e)), and the pump 4 is stopped. At this time, since the input of the operation permission request signal from the post-installation PC 9 is also stopped, the post-installation PC 9 stops the operation permission request signal to the upstream side following the stop of the pump drive command signal to the upstream side (Fig. 9(h), see the second half of (d)). As a result, the main PC 8 stops outputting the operation permission signal to the post-installation PC 9 (see the first half of FIG. 8(c)). During this time, since the input of the operation permission request signal from the post-installation PC 9 is stopped, the output of the operating signal to the post-installation PC 9 is stopped accordingly, and the quantitative filling is completed on the downstream post-installation PC 9 side. Processing ends.

When the subroutine for the main PC ends, as shown in FIG. 5, a start signal is waited for from the main operation unit 8a, and when this is transmitted, an operating signal is sent to each of the post-installed PC 9, the opening/closing valve 7, and the pump 4 to open/close the valve. A command signal and a pump drive command signal are output (see the latter half of FIGS. 8(h), (b), (i) and (e)). As a result, the on-off valve 7 arranged in the terminal piping line 6a on the most upstream side corresponding to the pump 4 of the main piping line 3 and the main PC 8a is opened, and the liquid to be measured in the storage tank 2 is released into the terminal piping line 6, It passes through 6a and is filled into a supply destination 10 such as a cylinder or a small tank.

After the pump drive command signal is output to the pump 4, when the metering signal of the flowmeter 5 is input (see the latter half of FIG. 8(f)), the metering signal from the flowmeter 5 is acquired (FIG. 8(j) second part), the weighing value is calculated from the weighing signal. At the same time, a determination is made as to whether the measured value has reached a prescribed quantity value, and this is repeated until the prescribed quantity value is reached. When the measured value reaches the specified value, the pump drive command signal to the pump 4 is stopped, and then the valve open command signal is stopped, that is, the valve close command signal is output (FIG. 8(k), e), (i) See latter half). Along with this, a display command signal is output to the display unit, and the weighing result is displayed (see the latter half of FIG. 8(l)). At this time, the start signal of the main PC 8 and the running signal to the post-installation PC 9 are stopped (see the latter half of FIGS. 8(h) and 8(b)), and the series of fixed quantity filling in the main PC 8 is completed.

The post PC 9 arranged corresponding to the terminal pipe line 6 branching from the main pipe line 3 and the post PC 9 connected to the downstream thereof are powered on in the same manner as the main PC 8 and can be filled with a fixed amount. When the state is restored, the post-installed PC subroutine (see FIG. 7) is executed as shown in FIG. That is, it is determined whether or not an operating signal is input from the upstream side, and if this is not input, it is determined whether or not an operating signal is being output to the post-installation PC 9 on the downstream side. At this time, neither an operation signal is input from the upstream side nor an operation signal is output to the downstream rear PC 9, so it is difficult to determine whether an operation permission request signal is directly input from the downstream rear PC 9. be judged.

When it is determined whether or not an operating signal is being input from the upstream side, if an operating signal is being input from the upstream side, the operating signal is output to the post-installed PC 9 on the downstream side (Fig. 9(a)). ), see the first half of (b)), and then it is determined whether or not an operation permission request signal is input from the post-installed PC 9 on the downstream side. When the operation permission request signal is not input from the post-installation PC 9 on the downstream side at the time of the determination, that is, when the start signal for fixed amount filling is not transmitted from any of the post-installation PC 9 on the downstream side, the downstream post-installation PC 9 It is determined whether or not an operation permission signal is output to the post-installed PC 9 . At this point in time, no operation permission signal is output to the post-installation PC 9 on the downstream side (see the first half of FIG. 9(e)). Wait for the start signal from the setting operation section.

In determining whether or not an operation permission request signal is input from the downstream rear PC 9, when the operation permission request signal is input from the downstream rear PC 9, that is, from any of the downstream rear PC 9 When the fixed filling start signal is being sent, an operation permission request signal is output to the upstream side (see the first half of FIGS. 9(c) and (d)), and the input of the operation permission signal from the upstream side is waited.

When the operation permission signal is input from the upstream side, the operation permission signal is output to the post-installation PC 9 on the downstream side (see the first half of FIGS. 9(e) and 9(f)). In this state, it is determined whether or not a pump drive command signal is input from the post-installed PC 9 on the downstream side. It is determined whether At this time, the pump drive command signal is not output and the metering signal is not input, so the input of the pump drive command signal from the post-installed PC 9 on the downstream side is waited for.

When a pump drive command signal is input from the downstream post PC 9, the pump drive command signal is output to the upstream side (see the first half of FIGS. 9(g) and (h)). At this time, the upstream side receives the signal and outputs a pump drive command signal to the pump 4 (if the upstream side is the main PC 8, see the first half of FIGS. 8(d) and 8(e)), and the pump 4 is driven. be. After that, the downstream PC 9 waits for a weighing signal to be input from the upstream side, and when this weighing signal is input (see the first half of FIG. 9(i)), it is output to the downstream downstream PC 9 (see FIG. 9 ( j) see first half).

After that, when the pump drive command signal from the downstream rear PC 9 stops (see the first half of FIG. 9(g)), that is, when the measured value on the downstream rear PC 9 side reaches the specified amount value (the rear PC 9 (Refer to the second half of FIG. 9(n) relating to the installation PC 9). At this time, the pump drive command signal to the upstream side is being output, so the output is stopped (refer to FIG. 9(h)). At this time, on the upstream side, a stop command signal is output to the pump 4 in response to the stop of the pump drive command signal, and the pump 4 stops. During this time, the input of the operation permission request signal from the post-installation PC 9 on the downstream side stops, but the output of the operation permission request signal to the upstream side continues (see the first half of FIGS. 9(c) and (d)). . Further, on the upstream side, in response to the stoppage of the pump drive command signal, the output of the operation permission signal and the operation signal to the post-installed PC 9 is stopped (see FIGS. 9(e) and 9(a), first half). As a result, since the input of the operation permission request signal from the downstream rear PC 9 is stopped, the rear PC 9 receives the above-mentioned stop of the operation permission signal, and starts the operation of the downstream rear PC 9. The intermediate signal and the operation permission signal are stopped (see the first half of FIGS. 9(e), (b), and (f)), the processing associated with the end of quantitative filling in the post-installation PC 9 on the downstream side ends, and the post-installation PC 9 subroutine ends.

When the post-installation PC subroutine ends, as shown in FIG. 1, the output of the operation permission request signal to the upstream side is stopped (see the first half of FIG. 9(d)), and the start signal is sent from the post-installation operation unit 9a. wait for When the start signal is transmitted, a running signal is output to the rear PC 9 on the downstream side (see FIGS. 9(k) and (b)), and the start signal on the side of the rear PC 9 on the downstream side is cut off. . That is, the operation permission request signal output from the post-installation PC 9 on the downstream side is cut off. Further, following the operating signal to the post-installed PC 9 on the downstream side, an operation permission request signal is output to the upstream side, and the subroutine for the post-installed PC is re-executed. As a result, even if the start signal is simultaneously output from the post-PC on the downstream side until the start signal is cut off on the post-PC on the downstream side, the start signal is not generated as described later. Among the post-PCs 9 that send signals, the start signal sent from the post-PCs 9 on the downstream side is prioritized, and quantitative filling can be performed.

When the re-execution of the subroutine for the post-installed PC is completed, it waits for an operation permission signal to be input from the upstream side. A command signal is output (see the latter half of FIGS. 9(e), (l) and (h)). At this time, the pump drive command signal is received on the upstream side, and the drive command signal is output to the pump 4 to drive the pump 4 . As a result, the on-off valve 7 arranged in the terminal piping line 6 corresponding to the post-installation PC 9 is opened, and the liquid to be measured in the storage tank 2 passes through the terminal piping lines 6, 6a from the main piping line 3. It is filled in a supply destination such as a cylinder or a small tank.

As the pump drive command signal is output to the upstream side, when the metering signal of the flow meter 5 is input from the upstream side (see the latter half of FIG. 9(i)), this is acquired (the latter half of FIG. 9(m) ), the weight value is calculated from the weight signal. At the same time, a determination is made as to whether the measured value has reached a prescribed quantity value, and this is repeated until the prescribed quantity value is reached. When the measured value reaches the specified value (see the latter half of FIG. 9(n)), the pump drive command signal to the upstream side and the valve open command signal to the on-off valve 7 are stopped in order, and the post-installed display section 9d , a display command signal is output to display the weighing result (see the latter half of FIGS. 9(h), (l), and (o)). At this time, the start signal of the post-installation PC 9 and the operating signal to the post-installation PC 9 on the downstream side are stopped (see the latter half of FIGS. 9(k) and 9(b)), and the series of quantitative filling in the post-installation PC 9 ends. do.

Re-execution of the post-installed PC subroutine will be described with reference to FIG. A state in which no operating signal is input from the upstream side and no operation permission request signal is input from the downstream side (see the first half of FIGS. 10(a) and 10(b)), i. The start signals are simultaneously transmitted from the two post-installation PCs 9 while the installation PC 9 is also not transmitting the start signal. At this time, even if an operation permission request signal is output to the upstream side from the most upstream subsequent PC 9 (hereinafter referred to as the most upstream PC) among these subsequent PCs 9, the operation permission signal is input to the most upstream PC 9 from the upstream side. Until then, an operation permission request signal may be input from the post-installation PC 9 on the downstream side (see FIG. 10(c)). At this time, the most upstream PC 9 does not start quantitative filling, and even if an operation permission signal is input from the upstream side, the operation permission signal is output to the downstream post-PC 9 (FIG. 10(e), ( f) see). Thereafter, when a pump drive command signal is input from the post-installation PC 9 on the downstream side, it is output to the upstream side (see FIGS. 10(g) and (h)). As a result, even if a plurality of start signals are transmitted at the same time, the most upstream PC 9 receives the operation permission signal input from the upstream side and the measurement signal of the flowmeter 5 as described in the post-installed PC subroutine. (see FIGS. 10(e), (f), (i), and (j)), the start signal of the downstream rear PC 9 is given priority, and the downstream rear PC 9 is given priority. Quantitative filling can be performed.

Further, when the quantitative filling in the downstream post-PC 9 with priority ends, the operation permission request signal from the downstream post-PC 9 is stopped, but the operation permission request signal to the upstream side continues upstream. 10(c), (d), and (e)). Therefore, the most upstream PC 9 immediately outputs a pump drive command signal to the upstream side as shown in FIG. (see FIGS. 10(h) and 10(k)), the open/close valve 7 is opened, and quantitative filling of the liquid to be measured can be started.

When the metering signal of the flow meter is input from the upstream side along with the opening of the opening/closing valve 7, the metering signal is obtained and the metering value is calculated from the metering signal (see FIGS. 10(i) and (m)). When the measured value reaches the specified value (see FIG. 10(n)), the output of the pump drive command signal to the upstream side is stopped as described above, and the valve open command signal to the open/close valve 7 is stopped. That is, a valve closing command signal is output (see FIGS. 10(h) and 10(l)). As a result, the pump 4 is stopped and the opening/closing valve 7 is also closed. In addition, since the output of the operation permission request signal to the upstream side is also stopped, the operation permission signal from the upstream side is also stopped (see FIGS. 10(d) and (e)), and the series of constant filling at the most upstream PC 9 is stopped. can be finished.

As described above, the present invention includes the main piping line 3 in which the pump 4 and the flow meter 5 are arranged, the terminal piping line 6a connected to the main piping line 3, and the opening/closing valve 7 arranged in the terminal piping line 6a. A main PC 8 is arranged corresponding to the terminal piping line 6a, and the main P8 drives the pump 4 and opens and closes the opening and closing valve 7 of the terminal piping line 6a corresponding to the main PC 8 in response to an input signal from the downstream side. Either the measurement signal of the flowmeter 5 is acquired while controlling the opening and closing and the liquid to be measured is filled with a fixed amount, or the drive of the pump 4 is controlled and the measurement signal of the flowmeter 5 is output to the downstream side. It is characterized in that it is configured to perform

With the above-described configuration, the present invention controls the driving of the pump 4 of the main piping line 3 when there is no input signal to the main PC 8 from the downstream side, and the opening/closing valve 7 of the terminal piping line 6a in which the main PC 8 is arranged. It is possible to control the opening and closing to perform a fixed amount filling of the liquid to be measured. In addition, when a signal such as an operation permission request signal requesting operation permission or a pump drive command signal instructing to drive the pump 4 is input from the downstream side of the main PC 8, the pump 4 is driven and the flow meter 5 is turned on. A weighing signal can be output to the downstream side of the main PC8. As a result, an additional filling device (not shown) having a post-installed PC can be connected to the downstream side of the main PC 8, and a quantitative filling unit can be provided in consideration of expansion. Moreover, it is not necessary to centrally control these filling devices, and quantitative filling can be performed in each terminal piping line 6a. In addition, since there is no need to integrally control the main PC 8 and the additional filling device, when adding the terminal piping line 6 branching from the main piping line 3, the control system of the existing device such as the integrated control unit is changed. This eliminates the need for special expansion costs and construction time required for changing the control program, making it possible to provide an inexpensive quantitative filling system that takes future expansion into account.

In addition, the quantitative filling apparatus of the present invention comprises a main piping line 3 in which a pump 4 and a flow meter 5 are arranged, terminal piping lines 6 branched from the main piping line 3 and connected to supply destinations, and each terminal piping line. 6, and a post PC 9 is placed corresponding to the terminal piping line 6, and the post PC 9 controls the driving of the pump 4 on the upstream side according to a signal from the downstream side. While controlling the opening and closing of the open/close valve 7 of the terminal piping line 6 corresponding to the post-installed PC 9, the metering signal of the flow meter 5 from the upstream side is acquired to perform quantitative filling of the liquid to be measured. , a signal for controlling the driving of the pump 4 is output to the upstream side, and a metering signal of the flow meter 5 is output to the downstream side.

According to the above configuration, when there is no signal input from the downstream side of the post PC 9, the drive of the pump 4 of the main pipe line 3 is controlled and the opening and closing valve arranged in the terminal pipe line 6 where the post PC 9 is arranged is provided. By controlling the opening and closing of the valve 7, a fixed amount of liquid to be measured can be filled. Further, when an input signal such as an operation permission request signal for requesting operation permission or a pump drive command signal for instructing to drive the pump 4 is input from the post-installed PC 9 on the downstream side, a signal for driving the pump 4 is sent to the upstream side. In addition to outputting the signal, the metering signal of the flowmeter 5 can be output to the downstream side of the post-installed PC 9 . As a result, subsequent PCs 9 having the same structure can be sequentially connected to the downstream side of the subsequent PC 9, and an expansion unit for quantitative filling can be provided in consideration of expansion of the quantitative filling apparatus 1. FIG. In addition, even if these post-installed PCs 9 are connected in sequence, there is no need to integrally control them. There is no need to change the control system incorporated in the system, and it is possible to provide an inexpensive quantitative filling system considering future expansion.

Another aspect of the present invention is a main piping line 3 in which a pump 4 and a flow meter 5 are arranged, terminal piping lines 6, 6a branched from the main piping line 3 and connected to supply destinations, and each terminal piping. The lines 6 and 6a are provided with opening/closing valves 7, the main PC 8 is arranged corresponding to the most upstream terminal piping line 6a, and the other terminal piping line 6 arranged downstream of the main PC 8 is arranged. Then, the main PC 8 controls the driving of the pump 4 and the opening and closing of the opening and closing valve 7 of the terminal pipe line 6a corresponding to the main PC 8 according to the input signal from the main PC 9. Either the metering signal of the flowmeter 5 is acquired and the liquid to be measured is filled quantitatively, or the drive of the pump 4 is controlled and the metering signal of the flowmeter 5 is output to the post-installed PC 9 on the downstream side. In response to an input signal from the downstream side, the post-installed PC 9 outputs a signal for controlling the driving of the pump 4 to the upstream side and controls the opening/closing valve of the terminal piping line 6 corresponding to the post-installed PC. while acquiring the metering signal of the flow meter 5 from the upstream side and performing fixed amount filling of the liquid to be measured, or outputting a signal to control the driving of the pump 4 on the upstream side and sending the flow meter to the post-installed PC 9 on the downstream side 5 weighing signals.

With the above configuration, even if the terminal piping line 6 is added along with the extension of the main piping line 3, it is only necessary to sequentially connect the corresponding post-installed PCs (not shown) to the downstream side. Therefore, there is no need for integrated control to control the main PC 8 and many post-installed PCs 9 arranged corresponding to the terminal piping lines 6, 6a, so there is no need to modify the control program in the existing apparatus. becomes. In addition, there is no need for special expenses or time for changing the control program for the expansion, and an inexpensive quantitative filling system can be constructed in consideration of future expansion. In addition, since integrated control is not required, the number of post-installed PCs 9 is not limited for control purposes, so the number of terminal pipe lines 6 that can be added is not limited.

A main PC according to the present invention has a configuration for outputting an operation permission signal to the post-installed PC when an operation permission request signal is input from the post-installed PC, the post-installed PC has an operation unit for transmitting a start signal, A configuration for outputting an operation permission request signal to the upstream side by the start signal, a configuration for outputting a valve opening command signal to the corresponding open/close valve when the operation permission signal is input from the upstream side, and an operation permission signal is input from the upstream side. It is desirable to have a configuration for outputting an operation permission signal input from the upstream side to the downstream side post-PC when an operation permission request signal is input from the downstream side post-PC before the operation is performed.

According to this configuration, even if the start signal is simultaneously transmitted from a plurality of post PCs 9 and the operation permission request signal is output from the most upstream post PC 9 among these post PCs 9 to the upstream side, the operation permission request signal is output from the upstream side. An operation permission request signal may be input from the post-installation PC 9 on the downstream side before the operation permission signal is input. In this case, the upstream post-installation PC 9 does not start constant filling, and the operation permission signal from the upstream side is output to the downstream post-installation PC 9 . As a result, even if a plurality of start signals are transmitted at the same time, the post-installed PC 9 on the downstream side can be preferentially used for quantitative filling. In addition, since there is no need to determine the priority of the post-installed PCs 9 in advance with respect to the transmission of the start signal, there is no need for integrated control to integrate these post-installed PCs 9, and an inexpensive quantitative filling system can be constructed. .

Further, the main PC 8 or the post-installation PC 9 according to the present invention is configured to store the state of the input signal and the state of the output signal when the power is turned off, and to continue subsequent processing according to these states when the power is turned off. may be configured to process input and output signals to continue the series of metered fills. In this case, even if a sudden power failure occurs during fixed amount filling or in an emergency stop or temporary stop during fixed amount filling, the input state and output state of the main PC 8 and the subsequent PC 9 before the power failure are called and An interrupted quantitative fill can be continued from the state.

Although the quantitative filling device 1 according to the embodiment of the present invention has been described as a device with one liquid type and multiple supply ports, by arranging these in parallel and using these supply ports as a common supply destination, , a device with multiple supply ports for multiple types of liquids. Further, the specific configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention.

1... Quantitative filling device,
2 ... storage tank,
3... Main piping line,
4 ... pump,
5 ... flow meter,
6, 6a ... terminal piping line,
7 ... opening and closing valve,
8 ... main preset counter,

Claims (5)

A main piping line in which a pump and a flow meter are arranged, a terminal piping line connected to the main piping line, and an on-off valve arranged in the terminal piping line, and a main preset counter is arranged corresponding to the terminal piping line, The main preset counter controls the driving of the pump and the opening and closing of the opening/closing valve of the terminal piping line corresponding to the main preset counter according to the input signal from the downstream side, and acquires the measurement signal of the flow meter to obtain the liquid to be measured. or controlling the driving of a pump and outputting a metering signal of a flowmeter to a downstream side. Equipped with a main piping line in which a pump and a flow meter are arranged, a terminal piping line branched from the main piping line and connected to a supply destination, and an opening and closing valve arranged in each terminal piping line, A post-installed preset counter is arranged correspondingly, and the post-installed preset counter outputs a signal for controlling the drive of the pump to the upstream side in response to an input signal from the downstream side and a terminal corresponding to the post-installed preset counter. While controlling the opening and closing of the open/close valve of the piping line, it acquires the measurement signal of the flow meter from the upstream side and performs fixed amount filling of the liquid to be measured, or outputs a signal to control the drive of the pump on the upstream side and the downstream side. A metered filling device for liquid to be measured, characterized in that it is configured to either output a metering signal of a flow meter to a post-installed preset counter. A main piping line in which a pump and a flow meter are arranged, a terminal piping line branched from the main piping line into many branches and connected to a supply destination, and an on-off valve arranged in each terminal piping line, and the terminal on the most upstream side A main preset counter is arranged corresponding to the piping line, a post-installation preset counter is arranged corresponding to another terminal piping line arranged downstream of the main preset counter, and the main preset counter is a post-installation preset counter Depending on the input signal from the main preset counter, drive the pump and control the opening and closing of the opening and closing valve of the terminal piping line corresponding to the main preset counter, acquire the metering signal of the flow meter, and perform quantitative filling of the liquid to be measured It is configured to either control the driving of the pump and output a measurement signal of the flow meter to a post-installed preset counter on the downstream side, and the post-installed preset counter responds to an input signal from the downstream side, While outputting a signal to control the driving of the pump to the upstream side and controlling the opening and closing of the opening and closing valve of the terminal piping line corresponding to the post-installed preset counter, the measurement signal of the flow meter from the upstream side is acquired to measure the liquid to be measured. or output a signal to control the driving of the pump on the upstream side and output a metering signal of the flow meter to a post-installed preset counter on the downstream side. Quantitative filling device for liquid to be measured. The main preset counter is configured to output an operation permission signal to the post-installed preset counter when an operation permission request signal is input from the post-installed preset counter,
The post-installed preset counter has an operation unit that transmits a start signal, and is configured to output an operation permission request signal to the upstream side in response to the start signal. When an operation permission request signal is input from a downstream post-installation preset counter before an operation permission signal is input from the main preset counter, the operation permission signal input from the upstream side is output to the downstream post-installation unit. 4. The quantitative filling device for liquid to be measured according to claim 1, further comprising a configuration for outputting to a preset counter. The main preset counter or the post-installed preset counter is configured to store the state of the input signal and the state of the output signal at the time of power-off, and according to these states at the time of start-up, input/output signals are stored so as to continue subsequent processing. 5. The quantitative filling device for liquid to be measured according to any one of claims 1 to 4, characterized in that it is configured to process and continue a series of quantitative fillings.

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