CN106901392B - Full-automatic anaerobic fermentation tank control device and control method thereof - Google Patents
Full-automatic anaerobic fermentation tank control device and control method thereof Download PDFInfo
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- CN106901392B CN106901392B CN201710126607.8A CN201710126607A CN106901392B CN 106901392 B CN106901392 B CN 106901392B CN 201710126607 A CN201710126607 A CN 201710126607A CN 106901392 B CN106901392 B CN 106901392B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 230000001960 triggered effect Effects 0.000 claims abstract description 7
- 238000004659 sterilization and disinfection Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000004151 fermentation Effects 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010564 aerobic fermentation Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
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Abstract
The invention provides a control device and a control method of a full-automatic anaerobic fermentation tank, which comprises a PLC industrial control board, wherein an input port X2 of the PLC industrial control board is connected with a pressure relay, an input port X3 of the PLC industrial control board is connected with a liquid level sensor, an output port Y0 of the PLC industrial control board is connected with a liquid discharge electromagnetic valve, an output port Y1 of the PLC industrial control board is connected with a sample adding electromagnetic valve, an output port Y2 of the PLC industrial control board is connected with an inflation electromagnetic valve, an output port Y3 of the PLC industrial control board is connected with a lofting electromagnetic valve, an output port Y4 of the PLC industrial control board is connected with a steam electromagnetic valve, an output port Y5 of the PLC industrial control board is connected with a test tube electromagnetic valve, an output port. According to the invention, the time is controlled by adopting a timer in the PLC industrial control board, so that the on-off of the electromagnet is triggered to control the opening and closing of the hydraulic pressure and the electromagnetic valve, the automatic sampling of the fermentation system is realized, and the sampling amount is accurate.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of food machinery, in particular to a full-automatic anaerobic fermentation tank control device and a control method thereof.
[ background of the invention ]
Fermentation equipment is one of the most important equipments in microbial engineering, and a good culture apparatus should be designed to have a tight structure, good liquid mixing performance, high mass and heat transfer rates, and reliable detection and control instruments to obtain the maximum production efficiency. The fermentation equipment is divided into an aerobic fermentation tank and an anaerobic fermentation tank according to whether oxygen is needed for fermentation. However, the practical application in production mainly comprises aerobic microbial fermentation, so the variety of aerobic fermentation tanks is the largest and the research is the most thorough. Anaerobic fermentation systems are less studied.
The working flow of the manual anaerobic fermentation system is shown in figure 1. The experimental process comprises the following steps: closing the waste liquid valve 1 ', closing the sample outlet valve 2 ', closing the high-pressure gas inlet valve 3 ', opening the sample inlet valve 4 ', injecting a sample to be fermented from the sample inlet, and closing the sample inlet valve 4 '; fermenting a sample in a fermentation tank 100 ', opening a high-pressure gas inlet valve 3' to introduce 2MPa of high-pressure gas at regular intervals according to specific needs, simultaneously opening a disinfection steam inlet valve 5 ', carrying out high-temperature disinfection on a sampling pipeline, closing the disinfection steam inlet valve 5' after 30S, opening a sample outlet valve 2 ', pressing out liquid in the fermentation tank 100' under the high-pressure action of the gas, flowing into a test tube (not shown) with scales at the end part of an outlet, closing the sample outlet valve 2 'after reaching a sampling amount, closing the high-pressure gas inlet valve 3', continuing fermentation, and repeating the previous operation steps until the experiment is finished.
The sampling of the existing anaerobic fermentation tank is generally manually controlled, and the sampling is carried out at intervals of 2-6 hours in the experimental process in sequence, so the sampling period is long, and the sampling cannot be interrupted in the middle of a single test, so the experimental process is usually uninterrupted for 24 hours, special personnel are required to be equipped for timing sampling, in addition, the sampling amount is also manually controlled, and the error is large. Therefore, the problems of sampling the anaerobic fermentation tank are as follows: long sampling period, difficult control of sampling amount, inconvenient sampling operation and the like.
[ summary of the invention ]
One of the technical problems to be solved by the present invention is to provide a full-automatic anaerobic fermentation tank control device, which uses a timer inside a PLC industrial control board to control time, and further triggers the on/off of an electromagnet to control the opening and closing of a hydraulic and pneumatic valve, so as to realize the automatic sampling of a fermentation system, and the sampling amount is accurate.
The second technical problem to be solved by the present invention is to provide a control method for a full-automatic anaerobic fermentation tank.
The invention solves one of the technical problems through the following technical scheme:
the first technical scheme is as follows:
a full-automatic anaerobic fermentation tank control device comprises a PLC industrial control board, wherein an input port X2 of the PLC industrial control board is connected with a pressure relay, an input port X3 of the PLC industrial control board is connected with a liquid level sensor, the other ends of the pressure relay and the liquid level sensor are both connected to a power supply end of the PLC industrial control board, the pressure relay is arranged at the top of an anaerobic fermentation tank, and the liquid level sensor is adjacently arranged beside a sampling test tube; an output port Y0 of the PLC industrial control board is connected with a drainage electromagnetic valve, an output port Y1 is connected with a sample adding electromagnetic valve, an output port Y2 is connected with an air charging electromagnetic valve, an output port Y3 is connected with a lofting electromagnetic valve, an output port Y4 is connected with a steam electromagnetic valve, an output port Y5 is connected with a test tube electromagnetic valve, an output port Y6 is connected with a stepping motor, the other ends of the sample adding electromagnetic valve, the air charging electromagnetic valve, the lofting electromagnetic valve, the steam electromagnetic valve, the test tube electromagnetic valve and the stepping motor are all connected to the anode of a power supply, and the cathode of the power supply is connected with the COM.
Preferably, the PLC industrial control panel further comprises a start button and a stop button, one end of the start button is connected with an input port X0, one end of the stop button is connected with an input port X1, and the other ends of the start button and the stop button are both connected to the power supply end of the PLC industrial control panel.
Preferably, the device also comprises a turntable, the turntable is driven by the stepping motor, and the sampling test tube is arranged on the turntable.
More preferably, the liquid level sensor is an ultrasonic sensor.
Preferably, the PLC industrial control board adopts a single chip microcomputer.
The invention solves the second technical problem by the following technical scheme II:
the second technical scheme,
A control method of a full-automatic anaerobic fermentation tank is based on the control device of the full-automatic anaerobic fermentation tank and comprises the following steps:
step 4, triggering an inflation solenoid valve to be electrified, a steam solenoid valve to be electrified and a test tube solenoid valve to be electrified when the time T3 is up, simultaneously triggering the timer to start timing T4, opening the inflation solenoid valve, filling high-pressure gas into the anaerobic fermentation tank, and triggering a pressure relay to power off the inflation solenoid valve if the pressure exceeds a set value; the steam electromagnetic valve and the test tube electromagnetic valve are opened in an electrified way, and the sample output pipeline is disinfected at high temperature by the disinfection steam;
and 6, when the time of T3 is up, repeating the steps 4 and 5 until all the samples are taken, and closing.
Preferably, the start and stop of sampling is controlled by a start button and a stop button.
Preferably, in the step 5, the stepping motor drives the turntable to rotate, and the sampling test tube is arranged on the turntable.
More preferably, the liquid level sensor is an ultrasonic sensor.
The invention has the following advantages:
1. the system controller can adopt a PLC industrial control board, and has low cost and easy construction;
2. the opening and closing of each valve are driven by a timer arranged in the PLC industrial control board, and the control time of each electromagnetic valve is convenient to modify aiming at different samples;
3. the sampling amount is controlled by the ultrasonic sensor, and the sampling control is accurate;
4. the position change of the sampling test tube is controlled by a stepping motor, so that multiple times of sampling can be realized;
5. the full-automatic sampling of the fermentation system is realized, and the manual operation is not needed.
[ description of the drawings ]
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a schematic view of a prior art manual anaerobic fermentation system.
FIG. 2 is a diagram of the hardware connections of the present invention.
FIG. 3 is a diagram of a hydro-pneumatic control circuit of the present invention.
FIG. 4 is a schematic view of a sampling member according to the present invention.
[ detailed description ] embodiments
Referring to fig. 2 to 4, the embodiment of the present invention will be described in detail.
In a first embodiment, please refer to fig. 2 and fig. 3, a control device for a full-automatic anaerobic fermentation tank includes a PLC industrial control board 100, an input port X2 of the PLC industrial control board 100 is connected to a pressure relay 110, an input port X3 is connected to a liquid level sensor 120, the other ends of the pressure relay 110 and the liquid level sensor 120 are both connected to a power source VCC of the PLC industrial control board, the pressure relay 110 is disposed at the top of the anaerobic fermentation tank 200, and the liquid level sensor 120 is disposed adjacent to the sampling test tube 210; an output port Y0 of the PLC industrial control board 100 is connected with a drainage solenoid valve 130, an output port Y1 is connected with a sample adding solenoid valve 140, an output port Y2 is connected with an inflation solenoid valve 150, an output port Y3 is connected with a lofting solenoid valve 160, an output port Y4 is connected with a steam solenoid valve 170, an output port Y5 is connected with a test tube solenoid valve 180, an output port Y6 is connected with a stepping motor 190, the other ends of the sample adding solenoid valve 140, the inflation solenoid valve 150, the lofting solenoid valve 160, the steam solenoid valve 170, the test tube solenoid valve 180 and the stepping motor 190 are all connected to the anode of a power supply, and the cathode of the power supply is connected with the COM port.
Another embodiment of the present control apparatus is: the control device further comprises a start button SB1, a stop button SB2 and a dial 220, wherein one end of the start button SB1 is connected with an input port X0, one end of the stop button SB2 is connected with an input port X1, and the other ends of the start button SB1 and the stop button SB2 are both connected to a power supply terminal VCC of the PLC industrial control board 100; referring to fig. 4, the turntable 220 is driven by the stepping motor 190, and the sampling test tube 210 is disposed on the turntable 220. The position change of the sampling test tube 210 is controlled by the stepping motor 190, so that multiple times of sampling can be realized.
It should be noted that: the control objects of the invention are 6 electromagnetic valves and a stepping motor, the control objects are not many, and the viscosity of the fermented liquid can change greatly, aiming at different samples, the timer in the PLC industrial control board needs to be adjusted, therefore, the PLC industrial control board can be selected to realize the control, the PLC adopts ladder diagram programming, aiming at different samples, the modification of the control time of each electromagnetic valve is more convenient and direct, compared with the traditional programmable controller industrial control board, the cost is low, the volume is small, compared with the single chip microcomputer, the development period is short, the effect is fast, the reliability is high, and the difference between the price of the industrial control board and the single chip microcomputer is little.
For example, the PLC industrial control board can adopt an imported industrial grade 32-bit CPU, is compatible with FX2N series of Mitsubishi company of Japan, and supports online monitoring and downloading; the output medium is an original high-power MOS tube with an inlet, the MOS tube has no mechanical loss, the power is high, the service life is long, the speed is high, and the MOS tube can be used for directly driving a 24V direct current electromagnetic valve; supporting interrupt instructions, external interrupt coordination D8099 can be used for pulse width measurement. The system is provided with a set of RS422 bus interfaces and can be used for program uploading and downloading or communication with a human-computer interface.
The input signals in the system are generated by a button, a sensor and a timer, wherein the button SB1 controls the system to be started, and the button SB2 controls the system to be stopped; the pressure relay 110 controls the pressure of 200 gas in the fermentation tank; the level sensor 120 is responsible for sensing the level of the liquid in the sampling tube 210 and controlling the rotation of the stepper motor 190, see FIG. 2. The output signal mainly controls 6 solenoid valves in the hydraulic circuit. The timer and the counter (used for calculating the rotation times of the turntable) are both built in the PLC industrial control board, and the setting of the initial value is realized by the text editor. The sampling test tubes 210 are placed on the turntable 220, the number of the sampling test tubes 210 is determined by the sampling number, and the rotation angle of the turntable 220 is realized by the stepping motor 190. The liquid level sensor 120 is separated from the height of the glass sensing liquid level, and the two media are different, so that the liquid level sensor is realized by an ultrasonic sensor, and the sampling control is accurate.
The operation principle of the present control device is as described in embodiment two.
In a second embodiment, a control method of a full-automatic anaerobic fermentation tank is provided, wherein the control method is based on the control device of the full-automatic anaerobic fermentation tank and comprises the following steps:
step 4, when the time T3 is up, triggering the charging solenoid valve 150 to be charged, the steam solenoid valve 170 to be charged, the test tube solenoid valve 180 to be charged, simultaneously triggering the timer to start timing T4, opening the charging solenoid valve 150, charging high-pressure gas into the anaerobic fermentation tank 200, and triggering the pressure relay 110 to power off the charging solenoid valve 150 if the pressure exceeds a set value; the steam electromagnetic valve 170 and the test tube electromagnetic valve 180 are electrified and opened, and the sample output pipeline is sterilized at high temperature by the sterilizing steam;
and 6, when the time of T3 is up, repeating the steps 4 and 5 until all the samples are taken, and closing.
The start and stop of the sampling process can be controlled, but is not limited to, by start button SB1 and stop button SB 2. In the step 5, the stepping motor 190 drives the turntable 220 to rotate, and the sampling test tube 210 is placed on the turntable 220. The level sensor 120 is an ultrasonic sensor.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (8)
1. The utility model provides a full-automatic anaerobic fermentation tank controlling means which characterized in that: the anaerobic fermentation tank comprises a PLC industrial control board, wherein an input port X2 of the PLC industrial control board is connected with a pressure relay, an input port X3 of the PLC industrial control board is connected with a liquid level sensor, the other ends of the pressure relay and the liquid level sensor are both connected to a power supply end of the PLC industrial control board, the pressure relay is arranged at the top of the anaerobic fermentation tank, and the liquid level sensor is arranged beside a sampling test tube; an output port Y0 of the PLC industrial control board is connected with a drainage electromagnetic valve, an output port Y1 is connected with a sample adding electromagnetic valve, an output port Y2 is connected with an air charging electromagnetic valve, an output port Y3 is connected with a lofting electromagnetic valve, an output port Y4 is connected with a steam electromagnetic valve, an output port Y5 is connected with a test tube electromagnetic valve, an output port Y6 is connected with a stepping motor, the other ends of the sample adding electromagnetic valve, the air charging electromagnetic valve, the lofting electromagnetic valve, the steam electromagnetic valve, the test tube electromagnetic valve and the stepping motor are all connected to the anode of a power supply, and the cathode of the power supply is connected with a COM; still include a carousel, the carousel passes through step motor drives, and the sample test tube is arranged in on the carousel.
2. The control device of the full-automatic anaerobic fermentation tank of claim 1, wherein: the PLC industrial control panel is characterized by further comprising a starting button and a stopping button, wherein one end of the starting button is connected with an input port X0, one end of the stopping button is connected with an input port X1, and the other ends of the starting button and the stopping button are connected to the power supply end of the PLC industrial control panel.
3. The control device of the full-automatic anaerobic fermentation tank of claim 1, wherein: the liquid level sensor is an ultrasonic sensor.
4. The control device of the full-automatic anaerobic fermentation tank of claim 1, wherein: the PLC industrial control board adopts a single chip microcomputer.
5. A control method of a full-automatic anaerobic fermentation tank is characterized in that the control method is based on the full-automatic anaerobic fermentation tank control device of claim 1 and comprises the following steps:
step 1, starting, electrifying a liquid discharge electromagnetic valve, and discharging waste liquid in the anaerobic fermentation tank; meanwhile, a timer in the PLC industrial control board starts to time T1;
step 2, when the time of T1 is up, triggering a sample adding electromagnetic valve to be electrified, opening a sample adding port, adding a sample, and simultaneously triggering the timer to start timing T2;
step 3, when the time of T2 is up, the sample adding electromagnetic valve is powered off, the sample adding port is closed, and the timer starts to time T3;
step 4, triggering an inflation solenoid valve to be electrified, a steam solenoid valve to be electrified and a test tube solenoid valve to be electrified when the time T3 is up, simultaneously triggering the timer to start timing T4, opening the inflation solenoid valve, filling high-pressure gas into the anaerobic fermentation tank, and triggering a pressure relay to power off the inflation solenoid valve if the pressure exceeds a set value; the steam electromagnetic valve and the test tube electromagnetic valve are opened in an electrified way, and the sample output pipeline is disinfected at high temperature by the disinfection steam;
step 5, when the time T4 is up, the steam electromagnetic valve is powered off and the lofting electromagnetic valve is electrified, the sample in the anaerobic fermentation tank is output to a sampling test tube, the liquid level height of the sampling test tube is sensed through a liquid level sensor, the lofting electromagnetic valve is triggered to be powered off after the sample reaches the liquid level height, meanwhile, a stepping motor is controlled to continue rotating, and after the sample rotates to the position, the timer is triggered to start the timing T3;
and 6, when the time of T3 is up, repeating the steps 4 and 5 until all the samples are taken, and closing.
6. The method for controlling a full-automatic anaerobic fermentation tank according to claim 5, wherein the method comprises the following steps: the start and stop of sampling is controlled by a start button and a stop button.
7. The method for controlling a full-automatic anaerobic fermentation tank according to claim 5, wherein the method comprises the following steps: in the step 5, the stepping motor drives the turntable to rotate, and the sampling test tube is arranged on the turntable.
8. The method for controlling a full-automatic anaerobic fermentation tank according to claim 5, wherein the method comprises the following steps: the liquid level sensor is an ultrasonic sensor.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005034780A (en) * | 2003-07-17 | 2005-02-10 | Fuji Electric Holdings Co Ltd | Methane fermentation method and apparatus |
| CN101186874A (en) * | 2007-12-10 | 2008-05-28 | 沈阳航空工业学院 | Full-automatic domestic biological organic garbage anaerobic fermentation tank |
| CN102796661A (en) * | 2012-07-19 | 2012-11-28 | 南京福昌环保有限公司 | Anaerobic microbial biomass fermentation tank |
| CN104845879A (en) * | 2015-06-01 | 2015-08-19 | 山东省科学院生物研究所 | Automatic sampling system and control method of fermentation tank |
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- 2017-03-03 CN CN201710126607.8A patent/CN106901392B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005034780A (en) * | 2003-07-17 | 2005-02-10 | Fuji Electric Holdings Co Ltd | Methane fermentation method and apparatus |
| CN101186874A (en) * | 2007-12-10 | 2008-05-28 | 沈阳航空工业学院 | Full-automatic domestic biological organic garbage anaerobic fermentation tank |
| CN102796661A (en) * | 2012-07-19 | 2012-11-28 | 南京福昌环保有限公司 | Anaerobic microbial biomass fermentation tank |
| CN104845879A (en) * | 2015-06-01 | 2015-08-19 | 山东省科学院生物研究所 | Automatic sampling system and control method of fermentation tank |
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