An automatic control system for the production process of amino acid chelates

Abstract

The present invention discloses an automatic control system for the production process of amino acid chelates, including an on-site production and processing equipment system, a process control station and a remote communication network for the production and processing of amino acid chelates, wherein the on-site production and processing equipment system includes a hot water tank, a reactor, a turnover tank, a high-pressure homogenizer, a static tank, an air compressor, and a purified water production system; the process control station collects various data of the on-site processing equipment and uploads them to a remote control microcomputer, and at the same time receives control instructions from the remote control microcomputer and transmits them to the on-site processing equipment system to control each step of the production equipment. The present invention realizes a fully automatic human-machine interface and remote touch screen microcomputer control, has a simple structure, an intuitive screen, convenient and fast operation and maintenance, and can be appropriately expanded according to actual production requirements, has greater modifiability and extensibility, is convenient to upgrade, and has a high cost-effectiveness of the system.

Description

Technical Field

[0001] The present invention relates to an automatic control system in the field of bioengineering technology, in particular to an automatic control system for the production process of amino acid chelates. Background Art

[0002] With the rapid development of microelectronics technology, control technology is becoming more and more perfect and mature. As the core component of industrial control, PLC has stronger control functions, smaller size and more reliable operation. Industrial control configuration software is a software package that collects data from programmable controllers, various data acquisition modules and other devices in real time, issues control instructions and monitors whether the system is running normally. Configuration software can use the powerful graphic editing function of Windows to display the operating status of monitoring equipment in an animated way, can easily form a monitoring screen and realize control functions, and can generate reports and databases according to module settings, providing a convenient software development platform for industrial monitoring software development, and improving the quality of industrial control software as a whole.

[0003] The human-computer interaction interface represented by touch screens has completely broken the traditional operating modules such as buttons and signal lights, making the equipment operation interface more friendly and diverse. Its powerful storage function and communication capabilities bring unimaginable benefits and convenience to equipment manufacturers and users. Replacing the traditional equipment operation interface is an inevitable trend.

[0004] Amino acid chelates represented by amino acid chelate calcium, amino acid chelate magnesium, amino acid chelate zinc, etc. are the new generation of mineral supplements. In particular, amino acid chelate calcium is the third generation of calcium supplements in calcium preparations. It has good solubility and high absorption rate and has broad application prospects. In order to ensure product quality, automatic control of amino acid chelate production is particularly important. At present, the production of amino acid chelates in China is all traditional switch control, with a very low degree of automation, lacking real-time monitoring of online data in the production process, processing of process data, and optimization control of the processing process. In an environment where labor costs are soaring, it is necessary to develop an advanced and highly automatic control system for the production process of amino acid chelates and improve the automation level of the amino acid chelate production line. It is also an effective way to effectively reduce production costs and improve corporate benefits. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic control system for the production process of amino acid chelates in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] The present invention includes an on-site production and processing equipment system, a process control station and a remote communication network for the production and processing of amino acid chelates. The on-site production and processing equipment system includes a hot water tank, a reaction kettle, a turnover tank 1, a high-pressure homogenizer 1, a high-pressure homogenizer 2, a turnover tank 2, a high-pressure homogenizer 3, a high-pressure homogenizer 4, a static tank, a turnover tank 3, an air compressor, and a purified water production system; the process control station collects various data of the on-site processing equipment and uploads them to a remote control microcomputer, and at the same time receives control instructions from the remote control microcomputer and transmits them to the on-site processing equipment system so as to control each step of the production equipment; the remote communication network transmits data between the remote control microcomputer and the process control station through a wired or wireless communication network.

[0008] Preferably, the remote communication network uses data bus Profibus-DP for transmission.

[0009] Furthermore, the process control station includes a first control station, a second control station and a third control station. The first control station is used to collect data parameters of the hot water tank, the reactor and the turnover tank 1, upload the collected data parameters to the remote control microcomputer, and receive control instructions from the remote control microcomputer and forward them to the hot water tank, the reactor and the turnover tank 1 to control the equipment;

[0010] The water inlet is controlled by the pneumatic control valve on the hot water tank, the process water temperature is controlled by the temperature control heating device, and the quantitative water discharge and the overall start / stop of the hot water tank are controlled by the operation of the metering pump;

[0011] The reaction temperature is controlled by the temperature control device on the reactor, and the stirring speed is controlled by adjusting the speed of the variable frequency motor on the stirring device, and the temperature of the reaction liquid can also be controlled at the same time; in addition, the liquid level control device on the reactor is linked with the water discharge device on the hot water tank to prevent the reactor from overflowing;

[0012] According to the requirements of the synthesis reaction, the weight of the materials involved in the reaction is weighed by an automatic weighing device. After weighing, the signal is transmitted to the vacuum feeding device, and the materials are added to the reactor in the order of amino acid first and inorganic metal salt to carry out the synthesis reaction;

[0013] The circulating device on the reactor is used to reflux the liquid feed to ensure that there is no obvious precipitation of the suspension during the reaction and that the delivery pipeline is not blocked;

[0014] The pH value of the reaction liquid is instantly transmitted to the microcomputer controller through the pH meter sensor on the reactor and compared with the specified data. A small amount of reaction raw materials are added according to the result to ensure that the pH value of the reaction liquid meets the production process requirements; the remote control microcomputer sends a signal to close the pneumatic valve at the bottom of the turnover tank 1 through the first control station to the pneumatic valve sensor, close the bottom valve, open the pneumatic valve at the bottom of the reactor, and start the delivery sanitary pump 1 to deliver the material from the reactor to the turnover tank 1 for use in the next process;

[0015] The second control station is used to collect data parameters of the turnover tank 1, high-pressure homogenizer 1, and turnover tank 2, upload the collected data parameters to the remote control microcomputer, and receive control instructions from the remote control microcomputer and forward them to the turnover tank 1, high-pressure homogenizer 1, and turnover tank 2;

[0016] The liquid in the turnover tank 1 is transported to the high-pressure homogenizer 1 through a pipeline by opening the pneumatic switch of the bottom valve of the kettle, and the pneumatic reflux valve between the high-pressure homogenizer 1 and the turnover tank 1 is opened at the same time;

[0017] Turn on the high-pressure homogenizer 1, gradually pressurize to the required pressure, open the pneumatic valve between the high-pressure homogenizer 1 and the turnover tank 2, and then close the pneumatic reflux valve between the high-pressure homogenizer 1 and the turnover tank 1 until the liquid feed is processed;

[0018] Add an automatic pressure relief device in front of the high-pressure homogenizer 1 and the two pipelines described in 4.2.2 to form a linkage between the high-pressure homogenizer 1 to prevent the pipeline from bursting when the pneumatic valves at the two locations are in a closed state when the high-pressure homogenizer 1 is turned on;

[0019] Open the sampling port at the rear end of the high-pressure homogenizer 1 to perform process sampling test;

[0020] At the same time, observe and record the temperature on the turnover tank 2 and the real-time pH value of the liquid, and compare them with the data tested in 4.2.4 to ensure that the process data is within the specified requirements;

[0021] The operation of the high pressure homogenizer 2 is the same as above, and is considered as one for backup and one for use;

[0022] The third control station is used to collect data parameters of the turnover tank 2, high-pressure homogenizer 3, static tank, and turnover tank 3, upload the collected data parameters to the remote control microcomputer, and receive control instructions from the remote control microcomputer and forward them to the turnover tank 2, high-pressure homogenizer 3, static tank, and turnover tank 3;

[0023] The liquid in the turnover tank 2 is filtered through a filter and then transported to the high-pressure homogenizer 3 through a pipeline by opening the pneumatic switch of the bottom valve of the kettle;

[0024] Open the drain valve, start the high-pressure homogenizer 3, drain the air in the valve body, then close the drain valve, gradually pressurize to the required pressure, collect the previous liquid and reflux it until the liquid is processed;

[0025] Open the sampling port at the rear end of the homogenizer 3 to conduct process sampling test; at the same time, observe and record the temperature on the turnover tank 2 and the real-time pH value of the feed liquid and compare them with the test data to ensure that the process data is within the specified requirements;

[0026] Open the valve of the aggregate tank, turn on the power of the sanitary pump, and pump the treated liquid into the standing tank for 4 hours;

[0027] The operation process of the high-pressure homogenizer 4 is basically the same as the above process, and is considered as one for backup and one for use, and can also be used together with the high-pressure homogenizer 3;

[0028] Open the pneumatic valve between the static tank and the turnover tank 3, start the self-priming pump, and pump the supernatant in the static tank into the turnover tank 3, waiting for the next process to be spray-dried.

[0029] Furthermore, the process control station also includes an intelligent measurement and control module and a touch screen, which are used to collect process parameters such as temperature, liquid level, pH value, etc. of the on-site production and processing equipment system, and upload the collected process parameters to the remote control microcomputer. The touch screen is used to display the data parameters collected by the process control station and the dynamic simulation control operation of the on-site processing equipment. The process parameters include operating status, alarm signals and fault signals.

[0030] Furthermore, the first control station includes three digital input modules and three digital output modules; the second control station includes four digital input modules and three digital output modules; and the third control station includes three digital input modules and three digital output modules.

[0031] The present invention also includes a control platform, which is modularly combined with a safety mechanism module, a parameter setting module, a data acquisition and display module, a trend curve module, a report data output module and a database query module. The safety mechanism module includes: a system authority module or an operation authority module, a pipeline transportation process pressure limit safety module and an overpressure alarm and automatic stop safety module for the high-pressure homogenizer 1 and the high-pressure homogenizer 3; the parameter setting module includes: an operating set value and an upper and lower limit for production parameters, and generates alarm information according to the upper and lower limits of each parameter; the data acquisition and display module includes: a parameter acquisition module, a main screen module and a real-time parameter display module; the trend curve module includes: a real-time parameter curve output module and a historical parameter curve output module; the report input and output module includes: a daily report output module or a daily report automatic printing module; the database query module includes: a historical data query module and an alarm information query module.

[0032] The beneficial effects of the present invention are:

[0033] The present invention is an automatic control system for the production process of amino acid chelates. Compared with the prior art, the present invention realizes a fully automatic human-machine interface and remote touch screen microcomputer control, has a simple structure, an intuitive screen, convenient and quick operation and maintenance, can be appropriately expanded according to actual production requirements, has greater modifiability and expansibility, is convenient to upgrade, and has a high cost-effectiveness of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a system structure block diagram of the present invention;

[0035] Figure 2 It is a hardware configuration diagram of the automatic control system for the amino acid chelate production process of the present invention;

[0036] Figure 3 It is a function diagram of the configuration software of the automatic control system for the amino acid chelate production process of the present invention;

[0037] Figure 4 This is a PLC main control software structure diagram of the amino acid chelate production process automatic control system of the present invention;

[0038] Figure 5 is a process flow chart of the amino acid chelate production process of the present invention;

[0039] Figure 6 It is a system diagram of the amino acid chelate production equipment of the present invention. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings:

[0041] like Figure 1As shown: the present invention includes: a remote control microcomputer (the microcomputer can exchange information through a computer interface), a safety control module, a first control station (PLC master station), a second control station (distributed process control station), a third control station (PLC slave station) and an intelligent measurement and control module, which are connected in the middle using a data bus Profibus-DP.

[0042] The first control station completes the data collection of on-site production equipment and the automated operation and control of the equipment;

[0043] The second control station completes the data collection of the numerical and analog quantities of the remote equipment, and transmits it to the first control station through the data bus Profibus-DP to perform data processing and automatic control of the actuators;

[0044] The third control station completes the independent monitoring and control of the single machine of the production line;

[0045] The first control station and the second and third control stations are connected to the remote monitoring microcomputer touch screen through the data bus Profibus-DP to complete data communication;

[0046] The intelligent measurement and control module is mainly used for real-time data collection of the main production process parameters in the production line, communicates with the remote control microcomputer touch screen through the data interface, analyzes and processes the data, and simulates the display of the equipment status, thus forming a complete configuration, operation, and operation production monitoring system.

[0047] The safety control module mainly limits the range of specific data in the production process, such as purified water flow quantity, material (amino acid, inorganic metal salt) weighing value, temperature (hot water tank, reactor, turnover tank, static tank, etc.), pH value (reactor, turnover tank, static tank), pressure and other data. When exceeding the specified range, alarms will be issued in the form of graphics, text, sound and light, so that production monitoring personnel and production site personnel can deal with the alarm situation in time.

[0048] The remote monitoring microcomputer touch screen uses a configuration software platform to set parameters and monitor the production process in real time in the form of data display, curves, animations, etc. It also has fault and safety control displays, and saves historical data and fault history in the database for easy query. The operation is very simple and in line with the trend of modern intelligent manufacturing.

[0049] like Figure 2 The figure shows the hardware configuration diagram of the automatic control system for the amino acid chelate production process;

[0050] like Figure 3As shown: The configuration software is a set of Windows-based software used to quickly construct and generate monitoring systems. The amino acid chelate production automatic control monitoring system includes six functions: safety mechanism, parameter setting, data acquisition display, trend curve, report output and database query.

[0051] Safety mechanism:

[0052] The configuration software is password protected and has a security mechanism for system administrators and operator groups according to user groups. The system administrator can perform system operations, parameter settings, and exit the monitoring system. The operator group can only perform simple daily operations and cannot set parameters or exit the monitoring system.

[0053] If the liquid level exceeds or overflows, or the temperature, pH value, pressure overload, or other situations in the production process exceed the set value, early warnings can be given in a timely manner through graphics, text, sound, and light.

[0054] Parameter settings:

[0055] The operating set value and upper and lower limits of the parameters can be set arbitrarily and alarm information can be generated according to the upper and lower limits of each parameter. The deviation value of the parameter can be set for manual calibration.

[0056] Data collection shows:

[0057] This function includes parameter collection, main screen and real-time display of parameters. Parameter collection is to configure the device construction of the setting window. After the device communication is successful, real-time data collection and monitoring can be carried out; the main screen and real-time display of parameters are to use the animation components in the "user window" to place various graphics and images such as primitives, icons and animation components, make engineering animations, design screens that meet monitoring requirements, establish connections with real-time databases, realize data and process visualization, and display the collected parameter data in real time.

[0058] Trend curve:

[0059] The trend curve can more intuitively display the data change trend of each parameter. There are real-time parameter curve and historical parameter curve. The real-time curve reflects the change of the real-time value of the parameter, and the historical parameter curve reflects the change trend of the historical data of each parameter. It is mainly used to view the state change of the parameter and summarize the signal change law.

[0060] Report output:

[0061] Set the report display time and printing for the day as needed to complete the daily report output display and printing functions.

[0062] Database query: including historical database and alarm information database, you can query and browse the parameter values ​​and alarm information of the time period according to the selected time range, display them in the form of reports, and print them out as reports.

[0063] The present invention is automatically realized through PLC program and configuration application software. After the system is powered on, PLC automatically initializes the program, reads the operation instructions sent by the remote control microcomputer touch screen, and collects the process parameters and equipment operation status of the production site, and controls the production process according to the control program predetermined by the process flow.

[0064] like Figure 4 The figure shows the structure diagram of the PLC main control software of the automatic control system for the amino acid chelate production process;

[0065] like Figure 5 Shown is a process flow chart for the production of amino acid chelates;

[0066] like Figure 6 The diagram shows the system diagram of the amino acid chelate production equipment. The equipment codes in the diagram are as follows: 101 (hot water tank); 102 (reactor); 103 (turnover tank 1); 104 (high-pressure homogenizer 1); 105 (high-pressure homogenizer 2); 106 (turnover tank 2); 107 (high-pressure homogenizer 3); 108 (high-pressure homogenizer 4); 109 (aggregate tank); 110 (stationary tank); 111 (turnover tank 3); 112 (spray drying equipment)

[0067] The amino acid chelate production process automatic control system provided by the present invention realizes full-automatic human-machine interface control, has a simple structure, an intuitive screen, is easy to operate and maintain, can be flexibly expanded according to actual production application requirements, has strong modifiability and scalability, is easy to upgrade, and has a high cost-effectiveness ratio. In today's increasingly high labor costs, it has great practicality for reducing production costs and stabilizing product quality, improves the level of automation, meets the requirements of modern intelligent manufacturing, and meets the requirements of current trends.

[0068] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic control system for the production process of amino acid chelates, characterized in that: It includes an on-site production and processing equipment system, a process control station and a remote communication network for the production and processing of amino acid chelates. The on-site production and processing equipment system includes a hot water tank, a reactor, a turnover tank 1, a high-pressure homogenizer 1, a high-pressure homogenizer 2, a turnover tank 2, a high-pressure homogenizer 3, a high-pressure homogenizer 4, a static tank, a turnover tank 3, an air compressor, and a purified water production system; the process control station collects various data of the on-site processing equipment and uploads them to the remote control microcomputer, and at the same time receives control instructions from the remote control microcomputer and transmits them to the on-site processing equipment system to control each step of the production equipment; the remote communication network transmits the signals between the remote control microcomputer and the process control station through a wired or wireless communication network for data transmission; The process control station includes a first control station, a second control station and a third control station. The first control station is used to collect data parameters of the hot water tank, the reactor and the turnover tank 1, upload the collected data parameters to the remote control microcomputer, and receive control instructions from the remote control microcomputer and forward them to the hot water tank, the reactor and the turnover tank 1 to control the equipment; The water inlet is controlled by the pneumatic control valve on the hot water tank, the process water temperature is controlled by the temperature control heating device, and the quantitative water discharge and the overall start / stop of the hot water tank are controlled by the operation of the metering pump; The reaction temperature is controlled by the temperature control device on the reactor, and the stirring speed is controlled by adjusting the speed of the variable frequency motor on the stirring device, and the temperature of the reaction liquid can also be controlled at the same time; in addition, the liquid level control device on the reactor is linked with the water discharge device on the hot water tank to prevent the reactor from overflowing; According to the requirements of the synthesis reaction, the weight of the materials involved in the reaction is weighed by an automatic weighing device. After weighing, the signal is transmitted to the vacuum feeding device, and the materials are added to the reactor in the order of amino acid first and inorganic metal salt to carry out the synthesis reaction; The circulating device on the reactor is used to reflux the liquid feed to ensure that there is no obvious precipitation of the suspension during the reaction and that the delivery pipeline is not blocked; The pH value of the reaction liquid is instantly transmitted to the microcomputer controller through the pH meter sensor on the reactor and compared with the specified data. A small amount of reaction raw materials are added according to the result to ensure that the pH value of the reaction liquid meets the production process requirements; the remote control microcomputer sends a signal to close the pneumatic valve at the bottom of the turnover tank 1 through the first control station to the pneumatic valve sensor, close the bottom valve, open the pneumatic valve at the bottom of the reactor, and start the delivery sanitary pump 1 to deliver the material from the reactor to the turnover tank 1 for use in the next process; The second control station is used to collect data parameters of the turnover tank 1, high-pressure homogenizer 1, and turnover tank 2, upload the collected data parameters to the remote control microcomputer, and receive control instructions from the remote control microcomputer and forward them to the turnover tank 1, high-pressure homogenizer 1, and turnover tank 2; The liquid in the turnover tank 1 is transported to the high-pressure homogenizer 1 through a pipeline by opening the pneumatic switch of the bottom valve of the kettle, and the pneumatic reflux valve between the high-pressure homogenizer 1 and the turnover tank 1 is opened at the same time; Turn on the high-pressure homogenizer 1, gradually pressurize to the required pressure, open the pneumatic valve between the high-pressure homogenizer 1 and the turnover tank 2, and then close the pneumatic reflux valve between the high-pressure homogenizer 1 and the turnover tank 1 until the liquid feed is processed; An automatic pressure relief device is added between the high-pressure homogenizer 1 and the two pipelines to form a linkage with the high-pressure homogenizer 1 to prevent the pipeline from bursting when the pneumatic valves at the two locations are in a closed state when the high-pressure homogenizer 1 is turned on; Open the sampling port at the rear end of the high-pressure homogenizer 1 to perform process sampling test; At the same time, observe and record the temperature on the turnover tank 2 and the real-time pH value of the liquid, and compare them with the test data to ensure that the process data is within the specified requirements; The operation of the high pressure homogenizer 2 is the same as above, and is considered as one for backup and one for use; The third control station is used to collect data parameters of the turnover tank 2, high-pressure homogenizer 3, static tank, and turnover tank 3, upload the collected data parameters to the remote control microcomputer, and receive control instructions from the remote control microcomputer and forward them to the turnover tank 2, high-pressure homogenizer 3, static tank, and turnover tank 3; The liquid in the turnover tank 2 is filtered through a filter and then transported to the high-pressure homogenizer 3 through a pipeline by opening the pneumatic switch of the bottom valve of the kettle; Open the drain valve, start the high-pressure homogenizer 3, drain the air in the valve body, then close the drain valve, gradually pressurize to the required pressure, collect the previous liquid and reflux it until the liquid is processed; Open the sampling port at the rear end of the homogenizer 3 to conduct process sampling test; at the same time, observe and record the temperature on the turnover tank 2 and the real-time pH value of the feed liquid and compare them with the test data to ensure that the process data is within the specified requirements; Open the valve of the aggregate tank, turn on the power of the sanitary pump, and pump the treated liquid into the standing tank for 4 hours; The operation process of the high-pressure homogenizer 4 is basically the same as the above process, and is considered as one for backup and one for use, or used together with the high-pressure homogenizer 3; Open the pneumatic valve between the static tank and the turnover tank 3, start the self-priming pump, and pump the supernatant in the static tank into the turnover tank 3, waiting for the next process to be spray-dried.

2. The automatic control system for amino acid chelate production process according to claim 1, characterized in that: The remote communication network adopts data bus Profibus-DP transmission.

3. The automatic control system for amino acid chelate production process according to claim 1, characterized in that: The process control station also includes an intelligent measurement and control module and a touch screen, which are used to collect the temperature, liquid level, and pH value process parameters of the on-site production and processing equipment system, and upload the collected process parameters to the remote control microcomputer. The touch screen is used to display the data parameters collected by the process control station and the dynamic simulation control operation of the on-site processing equipment. The process parameters include operating status, alarm signals, and fault signals.

4. The automatic control system for amino acid chelate production process according to claim 3, characterized in that: The first control station includes three digital input modules and three digital output modules; the second control station includes four digital input modules and three digital output modules; the third control station includes three digital input modules and three digital output modules.

5. The automatic control system for amino acid chelate production process according to claim 1, characterized in that: It also includes a control platform, which is a modular combination of a safety mechanism module, a parameter setting module, a data acquisition and display module, a trend curve module, a report data output module and a database query module. The safety mechanism module includes: a system authority module or an operation authority module, a pipeline transportation process pressure limit safety module and an overpressure alarm and automatic stop safety module for the high-pressure homogenizer 1 and the high-pressure homogenizer 3; the parameter setting module includes: operating set values ​​and upper and lower limits for production parameters, and generates alarm information according to the upper and lower limits of each parameter; the data acquisition and display module includes: a parameter acquisition module, a main screen module and a real-time parameter display module; the trend curve module includes: a real-time parameter curve output module and a historical parameter curve output module; the report input and output module includes: a daily report output module or a daily report automatic printing module; the database query module includes: a historical data query module and an alarm information query module.

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