KR102055295B1 - A High-speed Fluid Filling System Using Electronic Flowmeter - Google Patents

Abstract

The present invention is directed to a high speed fluid filling system using an electronic flow meter. A high speed fluid filling system using an electronic flow meter according to the present invention comprises: a main PLC installed in a fixed body; Slave is installed on the rotating body to rotate with respect to the fixed body, exchanges a control signal with the main PLC and performs the operation control for the plurality of filling valves installed in the rotating body and having at least one multi-channel high speed counter With PLC; It is characterized in that it comprises an electronic flowmeter for detecting the flow rate of the fluid filled by each of the filling valves and generating a corresponding pulse count to transmit to the high-speed counter of the slave PLC.

Description

A high-speed fluid filling system using electronic flowmeter

The present invention relates to a fluid filling system, and more particularly to a high speed fluid filling system using an electronic flow meter capable of high-speed quantitative filling by electronic control using a pulse type electronic flow meter.

In the case of using the conventional rotary carbonated beverage filling as shown in Figure 1, the filling valve is opened by the upward movement of the filling container in the same pressure state of the filling container and the bowl (Bowl), the filling valve is the filling container Liquid filling is performed by pouring liquid into the liquid. During filling, the carbon dioxide gas inside the filling container is discharged into the ball along the tube inside the filling valve. It ends. In such a mechanical filling method, the seals of valves, etc. are worn in proportion to the use time, and errors in filling accuracy and repeating filling accuracy may occur, and leakage of the liquid may occur, making it difficult to quantitatively fill.

In addition, when filling carbonated beverages, the liquid must be chilled to be stable and easily quantitatively filled. However, to fill it coldly, it is necessary to turn the freezer to consume a lot of energy. Dew will form on In this case, consumer claims may occur due to mold growth in the distribution process, and thus, the condensation prevention process must be performed again, which increases energy consumption.

On the other hand, the cost reduction wind is blowing in the packaging materials of the beverage market recently, it can be seen as part of the cost to reduce the cost of PET containers by increasing the cost of raw materials of PET containers. However, the lightweight PET container can not contain the exact amount by the mechanical filling machine that meets the existing filling level due to the different degree of expansion of the bottle when filling at high pressure (about 3.4Kg / cm ² G or more). Since it contains more than the standard amount in order to meet, the yield is lowered and the cost increase factor of the producer.

For example, in order to fill at room temperature by a mechanical filling method, the filling is carried out at a high pressure. Since the degree of expansion of the PET container due to pressure is different, even if the filling level is the same during the filling process, if the pressure is removed during the sniffing process, the PET container is filled. Is different from the filling level as it returns to its original state from the expanded state.

Due to the above problems, European advanced companies have developed electronic filling technology using FLOW METER, which enables high-speed quantitative filling regardless of the degree of expansion of bottles at high temperature and high pressure. However, since the control unit of the filling machine is manufactured with a dedicated control board to prevent technology exposure, it is difficult to develop improved technology, and thus, the development of a unique technology using a high speed flowmeter is required.

An object of the present invention is to implement an electronic fluid filling system capable of high-speed small-scale precision filling by a multi-fill valve in the electronic control by adopting a pulse type electronic flow meter.

Another object of the present invention is to implement an electronic fluid filling system capable of high-speed precise filling of carbonated beverages in a lightweight PET container even at high temperature and high pressure by adopting a pulse type electronic flow meter by electronic control.

A high-speed fluid filling system using an electronic flow meter according to the present invention for achieving the above object, the main PLC (Main Programmable Logic Controller, the same below) installed in the fixed body; Slave is installed on the rotating body to rotate with respect to the fixed body, exchanges a control signal with the main PLC and performs the operation control for the plurality of filling valves installed in the rotating body and having at least one multi-channel high speed counter PLC (Slave Programmable Logic Controller, hereinafter same); It is characterized in that it comprises an electronic flowmeter for detecting the flow rate of the fluid filled by each of the filling valves and generating a corresponding pulse count to transmit to the high-speed counter of the slave PLC.

Each of the filling valves is characterized in that it comprises a liquid valve, a shunt valve, a counter pressure valve.

The high speed counter is characterized by having at least four channels.

The high speed counter is characterized by having at least eight channels.

The main PLC and the slave PLC are connected by a slip ring to perform communication.

The filling valve is characterized in that it further comprises a filling speed control valve.

The electronic flowmeter is characterized by having the highest resolution of 5ms to 0.001ms.

Input response time of the high speed counter is characterized in that 0.001ms to 1ms.

The present invention can configure a filling system capable of high-speed quantitative filling of carbonated beverages, etc. by using the electronic flow meter as described above, even when the filling container is PET, etc., regardless of the deformation of the container or the temperature and pressure change Precision filling can be carried out to meet the quality standards. Producer can reduce the cost by proper filling and meet certain quality standards, thereby improving customer satisfaction.

The electronic flowmeter of the present embodiment is capable of high-speed small filling by a plurality of filling valves while reducing costs by using a low-cost electronic flowmeter that generates pulse counting results and transmits them to a PLC.

In addition, since high-speed counting is performed by a high-speed counter using a pulse type electronic flow meter, it is possible to prevent filling errors due to communication delays that may occur in an expensive communication type electronic flow meter.

1 is a flow chart illustrating a filling process by a conventional mechanical filling system.
2 is a schematic diagram illustrating a high speed fluid filling system using an electronic flow meter of an embodiment of the present invention.
3 is a control block diagram of a high-speed fluid filling system using the electronic flow meter of an embodiment of the present invention.
Figure 4 is a schematic diagram illustrating the configuration of the main portion of the high-speed fluid filling system using the electronic flow meter of the embodiment of the present invention.
5 is a schematic diagram illustrating a process in which fluid filling is performed by a high speed fluid filling system using an electronic flow meter according to an embodiment of the present invention.
6 is a schematic diagram illustrating fluid filling precision by a high speed fluid filling system using an electronic flow meter of an embodiment of the present invention.
7 is a flow chart illustrating a process in which fluid filling is performed by a high speed fluid filling system using an electronic flow meter of an embodiment of the present invention.

Hereinafter, a configuration of a preferred embodiment of a rotary high speed fluid filling system using an electronic flow meter according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

In Figures 2 and 3, a rotary high speed fluid filling system using an electronic flow meter of an embodiment of the present invention is a fixed body including a main PLC (Main Programmable Logic Controller, hereinafter) (100) and the rotation with respect to the fixed body; And sequentially filling the plurality of filling containers 202 supplied below and including a rotating body 200 including a ball (BOWL) 201 and a plurality of filling valves 210.

In the rotary high speed fluid filling system of the present invention, 60 filling valves 210 filling the 500 ml carbonated beverage 205 are provided in the rotating body 200, and each filling valve 210 is approximately 150 ml / sec. It is assumed that a fast filling system for filling a beverage, but in another embodiment of the present invention can be applied to a high-speed carbonated beverage filling system for filling a variety of capacities, such as 200ml, 350ml, 1.5L, other than The type is not limited to the carbonated beverage 205, but the present invention can be applied to various filling solutions or filling fluids, and the present invention is not limited thereto.

In addition, the rotary high-speed fluid filling system using the electronic flow meter of the present embodiment, the slave PLC (Slave Programmable Logic Controller) (250 is the same) (250) installed in the rotating body 200, and installed in the rotating body 200 And a slave PLC (250) having at least one multi-channel high speed counter (251) to perform operation control for each of the plurality of filling valves (210) and fluids filled by the filling valves (210). An electronic flow meter 230 for detecting a flow rate and generating a pulse count corresponding thereto and transmitting the generated pulse count to the high speed counter 251 of the slave PLC 250 is included.

The main PLC 100 of the present embodiment performs control of the entire filling system and control of each slave PLC 250.

The slave PLC 250 of the present embodiment controls the filling operation of the filling valve 210 under the control of the main PLC 100. The slave PLC 250 of the present embodiment uses the slip ring 280 to control the main PLC. Since the control signals are exchanged with the 100, two PLCs 250 are installed at a 180-degree interval in order to distribute wiring problems and signal processing loads. However, the present invention is not limited thereto, and the slave PLC 250 is not limited thereto. The number of installations and the structure and condition of the installation are changeable.

On the other hand, the filling operation by the filling system of the present embodiment is a counter pressure process for opening the solenoid of the counter pressure valve 217 so that the pressure of the ball 201 and the pressure of the filling container 202 is the same pressure, and the counter pressure When the same pressure is secured by the process, the liquid filling process of recovering carbon dioxide gas from the filling container 202 to the ball 201 by performing the liquid filling by controlling the solenoid of the liquid valve 211 and filling when the liquid filling is completed And a sniffing process for removing the pressure in the vessel 202 to be equal to the ambient pressure, and the slave PLC 250 performs on / off control for each process.

 In order to control the respective processes, the slave PLC 250 of the present embodiment is a high-speed counter 251 for receiving and processing measurement information from the electronic flowmeters 250 measuring the flow rate of each flow valve as pulse counts, and The communication means 258 for transmitting and receiving control signals with the main PLC 100 and the driving control unit 252 controls the driving of each filling valve 210.

In the fluid filling system of this embodiment, for example, when the 500 ml filling capacity is filled by 150 ml / sec, the error of the filling capacity for good filling is ± 3 ml. In this case, when the transit time of 2ml is calculated, the allowable deviation of the operation time is 13.3ms (= 0.013 seconds), so the response time of the electronic flowmeter 230 should be within the allowable operation deviation time.

For example, the quality standards according to the Korea Food and Drug Administration Notice No. 2011-67 are shown in the table below. The KFDA permits a filling error of 3% for the 500 ml filling target, but in this embodiment ± Assume the quality of the 3ml error range and the quality standards of other embodiments may be different.

Category Display quantity Tolerance



weight 5 g or more and 50 g or less
More than 50g 100g or less
More than 100 g and less than 200 g
More than 200g and less than 300g
More than 300g 500g or less
More than 500g 1kg or less
More than 1kg 10kg or less
More than 10 kg 15 kg or less
Over 15kg 9%
4.5%
4.5%
9g
3%
15 g
1.5%
150 g
One%



Volume



5 ml or more and 50 ml or less
More than 50 ml up to 100 ml
More than 100 ml 200 ml or less
More than 200 ml and less than 300 ml
300 ml or more and 500 ml or less
More than 500ml 1L or less
1L more than 10L
More than 10L 15L or less
More than 15L 9%
4.5ml
4.5%
9 ml
3%
15 ml
1.5%
150 ml
One%

 [KFDA Notification No. 2011-67]

The electronic flowmeter 230 according to the present embodiment uses a maximum output pulse number of 10 kHz and a pulse on / off period of 0.1 ms, but is not limited thereto. As long as the electronic flowmeter 230 can provide an appropriate number of measurement values within the allowable deviation range, For example, the electronic flowmeter 230 may be applied in various ranges, such as an on / off period of less than 5 ms to 0.1 ms or less than 0.1 ms.

The high speed counter 251 of the embodiment of the present invention counts the pulse signal input from the electronic flowmeter 230 installed in each of the filling valves 210 and inputs it to the driving control unit 252. The high speed counter 251 of this embodiment has the capability to perform an appropriate operation on the input pulse count of the electronic flowmeter 230, and is configured to enable the input of eight channels, and the input of the eight electronic flowmeters. It is a configuration that can handle.

Therefore, in the case of the conventional PLC I / O card, 30 PLC I / O cards may be requested to process inputs of 60 peripheral devices, but in the case of using the high speed counter 251 of this embodiment, 8 channels The eight high speed counters 251 may calculate the pulse output of the electronic flowmeter 230 for each of the sixty filling valves 210. That is, since two slave PLCs 250 of FIG. 2 are used, four high-speed counters 251 may be provided for each slave PLC 250. The high-speed counters may be provided depending on the number and state of the slave PLCs 250. Installation of 251 may vary.

That is, the high speed counter 251 of the present embodiment uses eight channels, but the present invention is not limited thereto. If the resolution of the electronic flowmeter 230 can be utilized for 10 minutes, the number of channels may be smaller or more. can do.

For example, one high-speed counter 251 may be provided with dozens of channels to calculate and output pulse inputs of the corresponding number of electronic flowmeters 230. In this case, one slave PLC 250 may be configured. In addition, the rotor control box configuration is efficient, and the size of the panel can be reduced, resulting in economical efficiency.

For example, a PLC I / O card with an input response time of 1 ms can count three pulses per ml but is difficult to use because an error of 6 ml of program delay time occurs.

For example, when the high speed counter 251 having an input response time of 1 ms is used for the slave PLC 250, since the input response time is 1 ms, the response time is doubled on the basis of on and off pulses, and 2 ms is the response time. If the target amount is 500ml 3 pulses per 1ml can be input from the electronic flow meter, the resolution for 1ml is limited to 3 pulses.

On the other hand, since the slave PLC 250 of the present embodiment applies an eight-channel high-speed counter 251 having an input response time of 0.002 ms, the response time is doubled on the basis of the on-off pulse and the response time is 0.004 ms, and the filling target amount is In the case of 500ml, since each electronic flowmeter 230 can receive and process more than 300 pulses per 1ml, the resolution is increased to 300 or more. In the present embodiment, since the pulse period of the electronic flowmeter 230 is limited to 0.1 ms, it may be possible to perform quantitative filling by performing calculations within a range where considerable precision is recognized for the highest resolution of the electronic flowmeter 230.

The drive control unit 252 of the present embodiment has a counter pressure valve control means 254 for controlling the counter pressure valve 217, a liquid valve control means 253 for controlling the liquid valve 211, and after filling the fluid into the filling container. It includes a sniffer valve control means 256 for controlling the shunt valve 213 for the sniffing process to remove the pressure of the filling container, in accordance with an embodiment in order to improve the accuracy of the fluid filling speed A filling speed control valve 215 for controlling the speed may be provided. In this case, the driving control means 252 of the present embodiment includes the speed valve control means 255.

In addition, in the present embodiment, each of the filling valve 210 may perform the valve opening and closing operation by the solenoid operated by the on-off electrical signal.

The following describes a process in which high-speed filling of carbonated beverages is performed by the rotary high-speed fluid filling system using the electronic flow meter of the embodiment of the present invention having the configuration as described above.

Prior to the filling operation, the filling valve 210 is set and the deviation correction is performed (step 300).

When the filling container 202 is supplied to the filling system under the control of the main PLC 100, the filling container shangdong means 270 operates under the control of the slave PLC 250 so that the filling container 202 rises and fills. Filling container 202 inlet is in close contact with the bottom of the valve 210 to maintain the airtight.

Under the control of the slave PLC 250 of the present embodiment, the solenoid of the counter pressure valve 217 is opened to supply carbon dioxide gas to the filling container so that the pressure increases, the pressure of the ball 201 and the pressure of the filling container 202. The counter pressure process is performed until the same pressure is reached (step 301).

The slave PLC 250 of the present embodiment considers that the pressure of the filling container 202 is equal to the pressure of the ball 201 when the time set in the system elapses, and the liquid filling by the liquid valve 211 can be started. The solenoid of the valve 211 is opened (steps 302 and 303).

When the liquid filling is started, the electronic flow meter 230 of the filling valve 210 detects the flow rate at a set time interval, and outputs a pulse at the set flow rate interval to the slave PLC 250. In the present embodiment, the electronic flowmeter 230 is configured to generate a predetermined number of pulses per unit volume to generate 10 pulses per 1ml (that is, pulses at 0.1 ml intervals) on or off. The present invention is not limited thereto and may be variously changed according to embodiments.

The high speed counter 251 of the slave PLC 250 receives and counts a pulse corresponding to the flow rate from each corresponding electronic flowmeter 230 through each channel, and inputs the pulse corresponding to the flow rate to the drive control unit 252. When the filling valve 210 is filled more than a certain ratio of the filling target amount (for example, 70% to 90% of the target amount), the solenoid of the filling speed control valve 215 is operated to lower the filling speed to improve the precision of the quantitative filling. (Step 305, step 307).

When the filling speed regulating valve is operated and the counter pressure valve 217 is shut off, and the pulse generated by the electronic flowmeter 230 reaches the target filling amount, the driving controller 252, that is, the liquid valve control means 253, is the liquid valve 211. By controlling the solenoid of the to shut off the liquid valve 211, the speed valve control means 255 blocks the filling speed control valve 215 (steps 308, 309, 310, 302).

When a predetermined waiting time for blocking the liquid valve 211 has elapsed, the sniffer valve control unit 256 operates the solenoid of the sniffer valve 213 to sniff the carbon dioxide gas of the filling container 202 for a set time. Through the valve 213 to be discharged to the atmosphere (steps 312 and 313).

When the set time for the sniffer process ends and the pressure of the filling container 202 becomes the same as the pressure of the surroundings, the filling container shangdong means 270 is operated by the control of the slave PLC 250 to fill the filling container 202. The filling container 210 is removed and lowered from the filling valve 210, and the filling container 202, which has been filled, is moved to the outside, and the filling container 202 for the next filling is supplied below the filling valve 210 (steps 315 and 316). Step 317).

It is obvious that the scope of the present invention is not limited to the above embodiments but is determined by the matters described in the claims, and includes various modifications and adaptations made by those skilled in the art in the ranges equivalent to those described in the claims.

100 ...... Main PLC 200 ...... Rotator
201 ...... Bowl 202 ... Filling container
205 ...... CO2 210 ...... Filling Valve
211 ... liquid valve 213 ... sniffer valve
215 ...... Fill rate control valve 217 ...... Counter pressure valve
230 ...... Electronic Flowmeter 250 ...... Slave PLC
251 ...... High Speed Counter 252 ...... Drive Control
270 ...... Transport container for filling 280 ...... Slip ring

Claims (8)

A main PLC installed in the fixed body;
It is installed on the rotating body rotating with respect to the fixed body, exchanges a control signal with the main PLC through the slip ring and performs the operation control for the plurality of filling valves installed in the rotating body and at least one multi-channel high speed counter Slave PLC with;
An electronic flowmeter which detects the flow rate of the fluid filled by the filling valves and generates a corresponding pulse count and transmits the pulse count to the high speed counter of the slave PLC;
The multi-channel high speed counter receives and counts pulses generated by the electronic flowmeter corresponding to each channel, and outputs a cumulative count for each of the high speed counters.
A filling container supplied by the main PLC control;
A filling container shangdong means for moving the filling container to the filling valve under the control of the slave PLC so that the filling container container is in close contact with the lower end of the filling valve and airtight; And
A counter for supplying a carbon dioxide gas to the filling container under the control of the slave PLC to increase the internal pressure of the filling container so that a counter pressure process is performed until the pressure of the ball, which is the filling means, and the pressure of the filling container become the same pressure. A pressure valve;
The slave PLC determines that the pressure of the filling container is equal to the pressure of the ball when the set time has elapsed, and starts the liquid filling of the filling container by controlling the liquid valve.
The electronic flowmeter detects the flow rate at a set time interval and outputs one pulse per 1ml, which is a pulse per set flow interval, to be input to the slave PLC,
The high speed counter of the slave PLC receives and counts a pulse corresponding to the flow rate from the corresponding electronic flow meter through each channel, and inputs it to the drive control unit.
The driving controller, when the 70% to 80% of the filling target amount of the filling container is filled to control the filling speed control valve to lower the filling speed, and when the target filling amount is reached, shuts off the liquid valve and the filling speed adjusting valve, When a predetermined waiting time for shutoff of the liquid valve has elapsed, the sniffer valve control means is driven to discharge the carbon dioxide gas of the filling container into the atmosphere through the sniffer valve for a set time, so that the pressure of the filling container and the pressure around Is controlled to be the same,
The slave PLC is a high-speed fluid filling system using an electronic flow meter, which removes and moves the filling container from the filling valve is completed pressure adjustment. delete delete delete delete delete delete delete

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