JPH0723195B2 - Tank lorry device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention separates and transports a plurality of types of liquids, and then mixes these liquids at a desired mixing ratio to produce a mixed liquid,
The present invention relates to a tank truck device configured to supply this to a predetermined place.

[Prior Art] and [Problems to be Solved by the Invention] Conventionally, when it is not necessary to change the mixing ratio of a plurality of types of liquids depending on its use conditions, applications, etc. Although it can be generated by mixing, it is necessary to change the concentration of an admixture such as a water-reducing agent mixed in concrete in a fresh concrete manufacturing plant according to the use of the fresh concrete. In such a case, the admixture having a mixing ratio according to various uses must be stored in a drum or the like, and not only the filling step is required but also a storage space is required. Has occurred. In order to eliminate this drawback, the stock solution of the admixture is separately stored in the compartments of the storage tank of the tank roll car, and when the stock solution of the admixture is taken out from the storage tank, the mixing solution provided in the storage tank is removed. A tank lorry device has been developed in which the stock solution is mixed at an arbitrary mixing ratio in a chamber and the admixture produced in the mixing chamber is supplied to a predetermined place. In this tank lorry device,
There is no method for detecting the storage amount of the admixture in the mixing chamber, and improvement thereof is desired.

The present invention has been invented in accordance with the above-mentioned demand, and an object of the present invention is to provide a tank lorry device that detects the amount of liquid stored in a mixing chamber of a storage tank and sends an alarm such as full or empty of the mixing chamber. To do.

[Means for Solving the Problems]

In order to achieve the above object, a storage tank of a tank truck has a compartment for separately storing a plurality of types of liquids. A mixing chamber for mixing the liquids is provided in the storage tank, and pipelines are connected to the compartments and the mixing chambers, and automatic opening / closing valves are arranged in the pipelines.

The end of the pipeline is concentrated in one place and a pump is connected to it. To the other end of this pump, a circulation line including an automatic opening / closing valve, a measuring line including a strainer and a flow meter, and an automatic opening / closing valve is connected.
A shipping line is connected to the other end of the measurement line. Further, a filling line having an automatic opening / closing valve and communicating with the mixing chamber is connected to the other end of the measuring line. Further, the other end of the circulation line is connected to the filling line, and the liquid in the mixing chamber is configured to circulate through the circulation line and the filling line.

On the other hand, there is provided a control unit that selects three lines from a predetermined pipeline, a measurement line, a filling line, a circulation line, and a shipping line according to a predetermined work command signal. While adding the measured value of No. 1 to the storage amount of the mixing chamber, the addition / subtraction switching unit for subtracting the measurement value of the flowmeter from the storage amount of the mixing chamber by the shipping command signal is provided. The control unit also has a determination unit that determines whether the storage amount of the mixing chamber obtained by the addition and subtraction is between the upper limit setting value and the lower limit setting value.

[Action]

In the above device, the supply amount of each liquid is sequentially set according to the desired mixing ratio. When a work command signal is issued and this is a charging command signal, a predetermined automatic opening / closing valve is selected,
A pipeline, a metering line and a filling line communicating with a predetermined liquid are selected. At the same time, when a predetermined liquid passes through the measurement line and is supplied to the mixing chamber, the flow rate thereof is measured by the flow meter arranged on the measurement line. When the flow rate of the liquid reaches the predetermined set value, the measurement line is cut off. This liquid flow rate is simultaneously added to the liquid storage volume in the mixing chamber. A pipeline, a measurement line, and a filling line that communicate with a predetermined liquid are sequentially selected according to the work command signal, and a predetermined type of liquid is supplied to the mixing chamber.

After that, when the shipping command signal is transmitted, the pipeline, the measurement line, and the shipping line connected to the mixing chamber are selected, and the mixed liquid in the mixing chamber is supplied to the predetermined container by a predetermined amount by opening the measurement line. At this time, the flow rate of the liquid measured by the flow meter is subtracted from the liquid storage amount in the mixing chamber to calculate the liquid storage amount in the mixing chamber.

Further, if the storage amount in the mixing chamber may reach the upper limit value of the storage tank during the supply of the liquid or may reach the lower limit value during the shipping of the liquid, the measurement line is immediately cut off, and the external The alarm will be sent to, so you can easily know whether the mixing chamber is full or empty.

〔Example〕

Embodiments will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a tank truck, which is a compartment 2a for storing various liquids separately and a mixing chamber 2b for mixing these liquids.
Has a storage tank 2 provided with. A pipeline 3 is connected to each of the compartments 2a and the mixing chamber 2b of the storage tank 2, and a bottom valve 4 and automatic opening / closing valves 5a, 5b, 5c, 5d are arranged in each pipeline 3. There is. In addition, the end of the pipeline 3 is collected in one place, and the pump 6
It is connected to the. To the other end of the pump 6, a measuring line 9 having an automatic opening / closing valve 5e, a strainer 7 and a flow meter 8 and a circulation line 10 having an automatic opening / closing valve 5f are connected. A shipping line 12 including a manual valve 11a and a coupling 11b is connected to the other end of the measuring line 9, and the liquid in the mixing chamber 2b is shipped by opening the manual valve 11a. Has been done. At the other end of the measuring line 9, two automatic opening / closing valves 5g, 5h and a bottom valve 4 are provided.
Is connected to the mixing line 2 and the other end of the filling line 13 is connected to the mixing chamber 2b. Further, the other end of the circulation line 10 is connected to the filling line 13, and the liquid is circulated through the circulation line 10 and the filling line 13.

The tank lorry device 1 includes a work command section 16 for transmitting a predetermined work command signal, and a predetermined pipeline 3 and a measurement line 9 for actuating predetermined automatic opening / closing valves 5a-5h according to the work command signal from the work command section 16. , Circulation line 10, shipping line 1
2, valve selection unit 1 to select three lines from the filling line 13
7, a preset counter 18 that has a set value according to the type of liquid and counts the flow pulse of the flow meter 8, and a pulse distributor that distributes the flow pulse of the flow meter 8
20, a level metering counter 19 for measuring the amount of liquid stored in the mixing chamber 2b of the storage tank 2 by measuring the flow rate pulse from the pulse distributor 20, a switching unit 21 for switching between addition and subtraction according to a work command signal, and It has a control unit 15 including a printer 22 which receives a flow rate pulse from a pulse distributor 20 and is operated by a count-up signal of the preset counter 18. The control unit 15 is configured to operate in the following order as shown in FIG.

1) When the work command signal is the preparation command signal, the pipeline 3, the measuring line 9 and the filling line 13 are selected, and the flow rates of various liquids supplied to the mixing chamber 2b through the measuring line 9 and the filling line 13 are flow rates. In addition to the measurement by the total 8, the switching valve 21 is switched to the addition side and the flow rate of the liquid is integrated by the level metering counter 19 to calculate the storage amount in the mixing chamber 2b.

2) Level metering counter showing the storage amount in the mixing chamber 2b
When the count value of 19 does not reach the upper limit value of the mixing chamber 2b, the flow rate of the liquid is compared with a predetermined set value of the preset counter 18,
When the flow rate of the liquid does not reach the set value, the process returns to 1).

3) When the flow rate of the liquid reaches the set value, the measurement line 9 is shut off by the count-up signal of the preset counter 18, the printer 22 is operated, and when the predetermined liquid is not all supplied, the next Call the setting value of and return to 1).

4) When the storage amount in the mixing chamber 2b reaches the upper limit value, the measurement line 9 is shut off and an alarm is transmitted to the outside.

5) When the work command signal is the stirring command signal, the pipeline 3, the circulation line 10 and the filling line 13 connected to the mixing chamber 2b are selected, and the liquid in the mixing chamber 2b is stirred for a predetermined time. After that, shut off each line.

6) If the work command signal is a shipping command signal, the mixing chamber 2b
The pipeline 3, the measurement line 9 and the shipping line 12 connected to the are selected, the switching unit 21 is switched to the subtraction side, and then the flow rate of the liquid shipped from the coupling 11a at the end of the measurement line 9 is measured by the flow meter. Measure with 8. The flow rate of the liquid is supplied to the level metering counter 19 to supply the mixing chamber.
The storage amount in the mixing chamber 2b is calculated by subtracting from the count value indicating the storage amount in 2b.

7) When the storage amount of the mixing chamber 2b does not reach the lower limit value of the mixing chamber 2b and the output signal is not transmitted from the level measurement counter 19,
When the flow rate of the liquid does not reach the preset value of the preset counter 18, the process returns to 6).

8) When the flow rate of the liquid reaches the set value, the count-up signal from the preset counter 18 indicates the measurement line 9
Is shut off, the printer 22 is operated, the first set value of the preset counter 18 is called, and the process returns to 1).

9) When the count value of the level measurement counter 19 indicating the storage amount of the mixing chamber 2b reaches the lower limit value and an output signal is transmitted from the level measurement counter 19, the measurement line 9 is cut off and an alarm is transmitted to the outside. To do.

In the tank truck device, the preset counter 18 sequentially sets the supply amounts of the respective liquids in accordance with the desired mixing ratio. After that, when the work command signal is transmitted from the work command unit 16, the valve selection unit 17 selects the automatic on-off valves 5a to 5h connected to the liquid according to the work command signal, and the pipeline 3 is measured by opening the valves. The line 9 and the filling line 13 are selected, and a predetermined liquid is supplied to the mixing chamber 2b. At the same time, while the switching unit 21 is switched to the addition side, the flow rate of the liquid passing through the measurement line 9 is measured by the flow meter 8, and the flow rate pulse is accumulated by the preset counter 18.
When this integrated value reaches the preset value of the preset counter 18, the respective lines are shut off by the count-up signal, the printer 22 is operated, and the next preset value of the preset counter 18 is called. In response to a work command signal from the work command unit 16, desired amounts of liquid are sequentially supplied to the mixing chamber 2b in a predetermined amount, and when all the liquids are supplied to the mixing chamber 2b, the lines are shut off.

During this liquid supply, the flow rate pulse of the flow meter 8 is supplied to the level metering counter 19 and the storage amount in the mixing chamber 2b is counted.

After that, when the stirring command signal is transmitted from the work command unit 16, the automatic opening / closing valve 5c connected to the mixing chamber 2b is selected, and the pipeline 3, the circulation line 10 and the filling line 13 connected to the mixing chamber 2b are selected. The liquid in the mixing chamber 2b is selected and agitated while being circulated, and after a predetermined time, the pipeline 3,
The circulation line 10 and the filling line 13 are shut off.

After that, when the shipping command signal is transmitted from the work command unit 16, the valve selection unit 17 operates to select the pipeline 3 and the shipping line 12 connected to the mixing chamber 2b, and the switching unit 21 causes the subtraction side. And waits until the manual valve 11a is opened.

When the manual valve 11a is opened, the liquid in the mixing chamber 2b passes through the coupling 11b at the end of the measurement line 9 and is supplied to a predetermined container (not shown), so that the flow rate pulse of the liquid flowing through the measurement line 9 is generated. It is supplied to the preset counter 18. When the flow rate of the liquid reaches a predetermined set value of the preset counter 18, the count-up signal shuts off the measurement line 9, the printer 22 is activated, and the first set value of the preset counter 18 is called. During this period, the flow rate of the liquid measured by the flow meter 8 is supplied to the level measuring counter 19 and subtracted from the count value.

When the count value of the level metering counter 19 is between the predetermined upper limit value and the lower limit value, the flow rate measured by the flow meter 8 can be continuously added or subtracted. However, when the count value of the level measurement counter 19 reaches the upper limit value or the lower limit value, the level measurement counter 19 sends an output signal, which immediately cuts off the measurement line 9 and issues an external alarm. The information is transmitted and the operator can know whether the mixing chamber 2b is full or empty.

[Effects of the Invention] As described above, according to the present invention, a storage chamber is provided with a mixing chamber that produces a mixed liquid when a plurality of types of liquids are shipped to a predetermined container, and the amount of the liquid supplied to the mixing chamber is mixed with the mixing chamber. The amount of liquid stored in the mixing chamber is calculated from the amount of liquid shipped from the chamber, and when the amount of storage reaches a specified upper limit value or lower limit value, an alarm is sent to the outside. Not only can the liquid be prevented from overflowing, but when the amount of liquid stored in the mixing chamber falls below a predetermined amount, shipping of the liquid can be stopped immediately and a new mixed liquid can be generated.

In the embodiment, it is also possible to set the supply amount of each liquid so as to obtain a desired mixing ratio by the microcomputer processing from the storage amount in the mixing chamber and the mixing ratio thereof.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining the whole of the present invention, and FIG. 2 is for explaining the operation of a control unit according to the present invention. It is a flowchart. 1 ... tank lorry device, 2 ... storage tank, 2a ... compartment, 2b ... mixing chamber, 3 ... pipeline, 4 ... bottom valve,
5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h …… Automatic open / close valve, 6 …… Reversible pump, 7 …… Strainer, 8 …… Flowmeter, 9 …… Measuring line, 10 …… Circulation line, 11a …… manual valve, 11b …… coupling, 12 …… shipping line, 13 …… filling line, 14
…………, 15 …… Control unit, 16 …… Work command unit, 17 …… Valve selection unit, 18 …… Preset counter, 19 …… Level metering counter, 20 …… Pulse distributor, 21 …… Switching unit ,twenty two……
Printer,

Claims (1)

[Claims] 1. A storage tank of a tank truck has a compartment for separately storing a plurality of types of liquids and a mixing chamber for mixing the respective liquids, and a pipeline is connected to each chamber of the storage tank to connect the pipes. In addition to connecting the automatic open / close valve to each line, concentrate the end of each pipeline in one place and connect the pump to this, and connect the automatic open / close valve, strainer and flow meter to the other end of this pump. A circulation line including an on-off valve is connected, a shipping line is connected to the other end of the measurement line, and a filling line including an automatic on-off valve and communicating with the mixing chamber is connected, and the other end of the circulation line is further connected. Is connected to the filling line, a predetermined pipeline, a measurement line,
In a tank lorry device equipped with a control unit that selects three lines from a filling line, a circulation line, and a shipping line, the control unit adds the measured value of the flow meter to the storage amount in the mixing chamber by a preparation command signal, while shipping. An addition / subtraction switching unit that subtracts the measured value of the flowmeter from the storage amount of the mixing chamber by a command signal is provided, and whether the storage amount of the mixing chamber obtained from this addition / subtraction is between the upper limit setting value and the lower limit setting value. A tank lorry device characterized by being provided with a determination unit.