JPS6097035A - Mixing and filling apparatus of different kinds of liquids - Google Patents

Abstract

PURPOSE:To attain to enhance the efficiency of filling work, by performing additional filling without requiring labor even when the mixing ratio of a residual liquid is different from an objective mixing ratio and making it possible to allow the mixing ratio after filling to reach the objective mixing ratio accurately. CONSTITUTION:The wt. of a container 1 from the priority of filling to the completion of filling is weighed by a weighing apparatus 2 to output a wt. signal and a lately mixing ratio is inputted to an input apparatus 21. In addition, an operation means 1 calculates each filling amount of different kinds of liquids on the basis of a tare wt. preliminarily read corresponding to the container 1, the wt. of the container, the wt. of the container prior to filling obtained on the basis of the aforementioned wt. signal, the lately filling amount and the previous mixing ratio in a memory means 18. Succeedingly, a valve control means 16 controls the opening and closing of valve apparatuses 9, 10 to successively fill the container 1 with different kinds of liquids through filling nozzles 5, 6 and, when a filling amount in the indivisual filling operation of each of different kinds of liquids reaches the filling amount obtained by the means 16, the next filling operation of different kinds of liquids is succeeded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to (2) a dissimilar liquid mixing and filling device that automatically fills a cylinder or the like with dissimilar liquids at a desired mixing ratio.

When mixing and filling multiple types of liquids (for example, liquefied gases such as propane and butane) into containers such as cylinders, it is important to accurately match the mixing ratio to the target value. If the mixing ratio of the remaining liquid is the same as the target mixing ratio even if the mixed liquid remains in the cylinder, the filling operation is easy. If the target mixing ratio is different, the filling amount of each liquid to be added will not be easily matched, and as a result, the filling operation itself will be complicated.In addition, in conventional filling equipment of this type, the mixing ratio of the remaining liquid and the target mixing If the ratios differ, the operator manually calculates the filling amount of each liquid, which results in a lot of time and effort.

This invention was made in view of the above-mentioned circumstances, and even when the mixing ratio of the remaining liquid and the target mixing ratio are different,
It is an object of the present invention to provide a dissimilar liquid mixing/filling device that can perform additional filling without requiring manual labor and can accurately bring the mixing ratio after filling to a target mixing ratio. Therefore, as shown in FIG. 1, the present invention provides a weighing device that continuously measures the weight of container a from before filling to the end of filling and outputs a weight signal. If there is any remaining mixed liquid.

The storage means C in which the mixing ratio of this liquid) is stored, the tare weight pre-read corresponding to the container a, the container weight before filling obtained based on the container capacity 1 weight multiplier, and the input means d. calculation means e which calculates each filling amount of different liquids based on the current mixing ratio inputted and the previous mixing ratio in storage means C; a filling nozzle g for filling liquid; a supply of different liquids provided between the filling nozzle g and each supply source f;
The valve control device 1 is equipped with a valve device 1, h that controls shutoff, and a valve control device i that sequentially fills a container a with each different type of liquid by controlling the opening and closing of the valve device 1, h. In the side filling operation, when the filling amount obtained based on the weight signal reaches the filling amount obtained by the calculation means, the next filling operation of a different type of liquid is performed.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. In this figure, 1 is a cylinder (container) filled with a mixture of propane and butane, and the weighing device 2, which is placed on the ground, sends a weight signal corresponding to the weight of the cylinder 1 to the interface. 15 to the CPU (
central processing unit) 16. 3 and 4 are supply sources for butane and propane, respectively, which are connected to one side of the on-off valve 7 through pipes 5 and 6, and a filling nozzle 8 is provided on the other side of the on-off valve 7 via a hose to supply the cylinder. It is connected to 1. 9.10 is a valve device provided in each pipe 5.6, and together with the on-off valve 7, from the CPU 16 to I10 baud) 1
It is controlled by an opening/closing signal supplied by valve 7. 1
1 is a punching card suspended from cylinder 1,
It is recorded by the cylinder code (container identification coat) used to identify the cylinder, as well as the number and position of holes. J2 is a reader that reads the cylinder code from the drilling car under the control of the reader control section 13, and the cylinder code read by this reader 12 is supplied to the CPU 16 via the IJ-da control section 13.

18 is a memory, which stores programs used by the CPU 16, tare weight, container capacity, etc. corresponding to each cylinder code;
Total container weight, previous mixing ratio (weight ratio in this example)
, the next pressure limit, etc. are stored. 21 is a numeric keypad (input means) for inputting the current mixing ratio (weight ratio), and 22 is a printer for printing out the processing results of the CPUI 6.It should be noted that among the above-mentioned components 16 to 18 are filled A control section 20 is configured.

Next, the operation of this embodiment will be explained with reference to the flowchart shown in FIG. In addition, SP in the figure.

~SP, , respectively indicate each step of the flowchart.

First, in SP2, the cylinder code is read from the punching card 11 by the reader 12 and the reader control unit 13. In SP3, it is determined whether or not there was a parity error in the above-mentioned read operation, and the corresponding next breakdown voltage deadline is read from the memory 18 based on the cylinder code, and it is determined whether the deadline has expired.

If this determination is l'-YESJ, an alarm is generated (SP,) and the process returns to SP2. At SP, the cylinder number data (card data) read from the punch card 11 is substituted into the variable N. Note that the variable is memory 1
This is a data storage area set as 8. Hereinafter, the term "variable" used in this specification will be defined in the same way. Next, S
In P, if a mixing ratio that is 1.1-different from the previous mixing ratio is set this time, the current mixing ratio input from the keyboard 21 (for example, one propane mixing ratio) is read. Note that if the current mixing ratio is the same as the previous mixing ratio, no setting is performed using the keyboard 21. Then, at SP, it is determined whether or not the mixing ratio has been changed based on whether or not the current mixing ratio is set on the keyboard 21. If this judgment is "YES", the keyboard data is assigned to the variable ap, and the setting change flag NF is set to "1" (
SP,).

If “No”, set the setting change flag to “0”.

In SP, o, it is determined whether the setting change flag NF' is set to "1", and if "NO", the previous mixing ratio (hereinafter referred to as cylinder code) read from the memory 18 based on the card data is set to the variable Rp. Let the previous propane mixing ratio when is N be L)Lp(N). ) is assigned. Therefore, if the setting is not changed, the variable 几p immediately before step sp, , is the previous mixing ratio 几p(N).
However, if you change the settings, the keyboard data (
This time, the mixing ratio) has been substituted. Next, in %S"1!, the interface 15 is turned on and the supplied weight data is taken in, and in SP..., by detecting whether the TLf data exceeds the PJr foot value, the temperature of the cylinder is determined. It is determined whether the cylinder 1 is placed on the weighing device 1112. If the cylinder 1 is not placed on the weighing device 1112, the process returns to sp, .
After that, loop 11 is circulated until cylinder l is placed.
When the cylinder 1 is placed, the process moves to SP, and the weight data is substituted into the variable ZW. The weight data at this time corresponds to the sum of the tare weight of cylinder 1 and the weight of the remaining liquid (hereinafter referred to as the remaining amount).Next, at SP, the tare weight is read from the memory 18.The following is the cylinder code. The tare weight of N is expressed as EW(N), the calculation ZW-EW(N) is performed, and the result of this calculation is again substituted into the variable zW. As a result, the variable ZW takes a value corresponding to the remaining amount. And SP,
, then multiply the remaining amount by the previous propane mixing ratio LELp(N) (ZW x L 几p(N)), calculate the weight of propane in the remaining amount, assign it to the variable ZWp, and perform the calculation ZW-Zvvp. Calculate the weight of butane in the remaining amount and assign the result of this calculation to variable ZWn. sp, , multiplies the container capacity (the container capacity of cylinder code N is weighted with W (N)) by the variable Rp (propane mixing ratio), calculates the weight of propane when the cylinder is full, and calculates the result of this calculation. As well as substituting it into the variable Wp, the calculation W(N)-Wpr,c is performed to determine the weight of butane when the tank is full, and the result of this calculation is substituted into the variable WB. Then sp, , wp-zwp, and WB
−ZWB is calculated to calculate the additional filling amount of propane and butane, and each additional filling amount is calculated as variables TWp and TWB.
Assign to . And, in SP, 9, the additional charging amount of propane or butane is a positive value (TWp)
o or'l'WB)0) is determined. If this judgment is "NO", additional filling is not possible, so no filling is performed, and SP. An error message indicating that addition is not possible is displayed at , and then the process returns to SP. sp
If the determination in , , is "YES", step SP2.
Move to , perform the operation zw+'rwn+BW(N),
The result of this calculation is assigned to variable EW. In this case, variable B
The content of ``W'' is the value obtained by adding the additional filling amount of butane to the current weight data (weight according to the remaining balance officer). And SP
In 2□, the CPU]6 (Fig. 2) supplies an open signal to the on-off valve 7 and the valve device 9 by valving the I10 port [7], and as a result, the on-off valve 7 and the valve device 9 are in the open state. Then, butane is distributed. 5. Valve device9. Open/close valve7. The filling nozzle 8 is closed one after another and the cylinder 1 is filled. Then,
The loop JR consisting of sp, ,, sp, is cycled until the judgment at E4 becomes YESJ, and at the point when it becomes JYESJ, it moves to sp, I+.SP.

"C-&'lCPU 16 interrupts I/O boat 17."
Then, a close signal is supplied to the on-off valve 7 and the valve device 9, and as a result, the on-off valve 7 and the valve device 9 are closed and the filling with °C butane is completed. In this filling operation, SP,... is designed to be judged as ``YESJ'' when the weight data exceeds EW, but the speed at which the CPU 16 cycles through loop! is extremely fast, so the weight data exceeds EW. It does not significantly exceed EW, and in fact it almost matches EW.Therefore, when step 5PIIl is reached, "C&X, SPl for cylinder 1.

Butane is additionally charged in an amount equal to the added butane amount TWB.

Then, in steps SP, , ~SP, , additional filling of propane is performed in exactly the same manner as the above-mentioned butane light JA operation csp, 1 ~ SP, , and thereby,
A series of filling operations ends (SP, , ). In addition, SP,
. Then, the previous filling ratio LRp(N) is rewritten to the current filling ratio Rp.

In the embodiment described above, the tare weight, container capacity, etc. are stored in the memory 18, and the card data (cylinder;:l-
However, instead of this, for example, it is possible to record immutable data regarding containers such as tare weight and container capacity on the punch card itself, and read the above data directly from the card. You may also read it. Further, as the card, a magnetic card or a card with a barcode attached may be used. Furthermore, the above calculation is performed with propane as the standard, but the butane mixing ratio may be input to perform the calculation with butane as the standard. Although the explanation was given assuming that the respective purity of butane and propane are both 10 (l), in reality, there is a small amount of propane in the butane supply source 3, and a small amount in the propane supply source 4. Butane is mixed in. Therefore, a method for calculating the filling amount when considering the purity of such a supply source will be explained below.

1 mo of propane (C, H,) and butane EC, H, 0)
Letting the weight per liter be Mp and MB, respectively (but C-
= 12 g/mo 1 .

H...Ig/mol), and the remaining amount is WZ (corresponds to ZW of step sp,,)
, if the previous propane ratio is RL (molar ratio), then the weight of propane and butane in the remaining amount ZWp.

ZWB is RL-MI) + (1-RL)MB Z WB = W Z -Z W p ... (21').If the propane rate after filling is RN (molar ratio), then the container capacity is Since the amounts of propane and butane contained in W(N) are 0, WB&!RN M p , the amounts TWp and TWn of pure propane and pure butane to be added are respectively different.

Here, the pure propane rate of the raw material propane to be added is fLp
p (molar ratio), the pure butane rate of the raw material butane is RBp,
Assuming that each additional amount is TWO)' and TWB', the following two equations must hold true in order to achieve a propane rate of RN after filling is completed.

ppMp (1-Rnp)Mp XTWB'=TWl) ......(5) (1-Rp
p) Mu I (Ip I) Ml) + (1-R[) p) MB (1
-几B 9) MP+RB I) MB-) xTWn'=TWh ... River (6) Here, RPf) Mp 10 (]-Rρp) MB...
(7) (1-RB p )Mp0am l) Ml...
(8) 1-Rp1=Rn2 ・Old...(9) l-几111=R12... (Assuming 11, (
7) From equations (1o) to equations (5) and (6), each is 61 RpITW p10p2TW B=TWI)...-
”(11)RB 2 TW I)+RB 1 'I'W
B=TWB -------tp), (11),
'rwp from equation (12).

When TWB is inserted, Rp2R, nz-R1) IRBI X (Rp2'l'Wn-, anxTWp) ... group p
HTWB=□几91RB1−fLpzRnzX(RptTWn−Rm2TWp)+e+−+%). These equations (13) and (14) are added to the above-mentioned (9) and (1
0) Substituting the formula gives -Rpx-R,B1+1 几pl-1-RBI-1 apl-R11l-1. Here, (7) 7 (From formula 81, MpMn
+(MB-Mp)(RBpMi-RppMp)M p
MB (Rp p+1ELB pil) (MB +
MpJ RnpRpp TW p, TW B, and this TW p meeting TW11 are each 'I'Wp after step SP1° in FIG.

If used in place of TWB, filling including source purity correction can be performed. However, in this case, the keyboard 21 also manually inputs the mixing ratio, and the previous mixing ratio (engineering and molar ratio) stored in the memory 18.
Calculate TW B (16) (1c4 The following formula may be used instead of the formula. TW n=W(N)−Wz −TW p ・・・・−
・Ie1 As explained above, according to the present invention, a weighing device that continuously weighs a 1k cup from before filling to the end of filling and outputs a weight signal, and a weighing device that outputs a weight signal, an input device for inputting a ratio; a storage means for storing a previous mixing ratio for the container; and a storage means for storing a previous mixing ratio for the container; an operator for calculating each filling t of the different liquids based on the obtained strainer shake before filling, the current mixing ratio, and the previous mixing ratio in the #S self-memory middle stage; connected to each supply source of the different liquids; a filling nozzle that fills the container with liquid; a valve device that is provided between the filling nozzle and each of the supply sources to control supply and cutoff of each of the different liquids; and a valve device that controls opening and closing of the valve device. Each of the different liquids is sequentially filled into the container, and in the individual filling operation of each of the different liquids, the filling spear obtained based on the 'vi amount signal is
As soon as the filling amount obtained by the middle stage of calculation is reached,
The present invention also includes a valve control means for shifting to the next filling operation of a different type of liquid.

Even when changing the setting of the mixing ratio, filling can be performed without requiring much manpower, and the efficiency of the filling operation can be greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing the overall configuration of the present invention, FIG. 2 is a block diagram showing the configuration of an embodiment of the invention, and FIG. 3 is a flowchart showing the operation of the embodiment. l... cylinder (container), 2... weighing device, 3.4... supply source, 5.6... filling nozzle, 9.10. ...Valve device, 11...
...Puncture card (storage medium), 12...League (reading device), 13...Reader control unit (reading device), 16...CPU (calculating means, valve control device), 18... memory (storage means), 21...
... Cow-Board (manual means). tB applicant Hakusan Tokico Co., Ltd.

Claims (1)

[Claims] 1. A weighing device that continuously measures the weight of a container from before filling to the end of filling and outputs a weight signal, an input device that inputs the current mixing ratio, and a memory that stores the previous mixing ratio for the container. and a tare weight preloaded corresponding to the container. calculation means for calculating each filling amount of different liquids based on the container capacity, the weight of the container before filling obtained based on the weight signal, the current mixing ratio, and the previous mixing ratio in the storage means; a filling nozzle that is connected to each supply source and fills the container with liquid; a valve device that is provided between the filling nozzle and each of the supply sources and controls the supply and cutoff of each of the different types of liquid; and the valve device sequentially filling the container with each of the different liquids by controlling the opening and closing of the container;
(11) In the filling operation, when the filling amount obtained based on the weight signal reaches the filling amount obtained by the calculation means, the filling operation of the next different liquid is started. 2. The dissimilar liquids are propane and butane, and the calculation means calculates the purity 9 molar ratio of each of propane and butane as supply sources. The dissimilar liquid mixing and filling device according to claim 1, characterized in that the filling amount is calculated in addition as a calculation element. 3. The storage means stores the tare weight and container capacity;
Further, each of the containers has a storage medium in which a container identification code is written, and the calculation means calculates the tare weight and container capacity in the storage means based on the container identification code read by the reading device. 2. The dissimilar liquid mixing/filling device according to claim 1, wherein the dissimilar liquid mixing/filling device is configured to read.