Weighing distribution system is composed of industrial computer, PLC, industrial weighing instrument, frequency converter, vibration motor, reaction kettle, weighing module, conveyor belt and other parts. The control system is composed of programmable controller, solenoid valve and regulating valve. In the control of the system, the analog control method and the switching control method are involved. Among them, the control of the start and stop signals of the motor belongs to the switching control, while the flow control belongs to the analog control. The system adopts a programmable controller that integrates the analog and switching quantity. When the flow signal is collected by the system, it is converted into the current signal and sent to the programmable controller, and the programmable controller completes the corresponding operation according to the requirements of the user.
020-34563445The main control core of the Weighing system is STC90C52RC, which realizes the basic control function of the weighing system. The system extends the electronic calendar clock, which can be divided into six parts: minimum system, data acquisition, human-computer interaction interface, system power supply, clock and voice signal. The minimum system part mainly includes STC90C52RC and classical reset circuit. The data acquisition part consists of the weighing sensor, signal amplification and A/D conversion part. The signal amplification and A/D conversion part are mainly composed of the dedicated high-precision 24-bit AD conversion chip HX711, which realizes the human-computer interaction interface as keyboard input and dot-matrix LCD display, mainly using 4*4 matrix keyboard and 1602 LCD display. It can easily input data and display data intuitively: the clock module is mainly composed of the clock chip DS1302 and the clock circuit: the voice number module can voice read the time and the weight, unit price, amount and other voice content of the Electronic scale system, mainly achieved by SC1010B. The electronic scale can realize the basic weighing function, and expand the clock and voice count function, the clock module can also set the alarm clock function. The system also has an overrange alarm function when weighing. The whole system is simple in structure, easy to use, complete in function, high in precision, and has certain development value.
Weighing module in high-precision measurement of high environmental requirements, easy to be affected by the outside world, generally suitable for small and medium-sized projects. When the dispensing system has a large error range or poor effect, it can be analyzed from the following points:
1, the mounting direction of the weighing module and the tightness of the limit screw.
2, weighing instrument related Settings are correct, such as: creep capacity.
3, pipeline structure and installation.
Flowmeter generally adapt to more high-precision production environment or large engineering projects, less affected by the environment after installation and commissioning, just choose different forms of flowmeter according to the characteristics of the material can be, the main types can be divided into electromagnetic flowmeter, mass flowmeter, vortex flowmeter, rotor flowmeter and so on.
In the field of lubricating oil, it is generally recommended to use the weighing module for measurement, and according to the different site environment and process, the two measurement methods can also be combined to run in order to achieve the best cost-effective service.
Weighing system process overview:
1) The base oil and additives are driven from the storage tank to the mixing kettle through the diaphragm pump;
2) Blending, the use of pulse blending device or frequency converter stirrer to completely stir the base oil and additives;
3) Drive the product oil into the high storage tank with the diaphragm pump;
4) Filling and packing out of the warehouse.
Ingredient production Overview:
1) The base oil and additives are driven from the storage tank to the mixing kettle through the diaphragm pump.
2) Blending, the use of pulse blending device or frequency converter stirrer to make the base oil and additives completely stir evenly.
3) Drive the finished oil into the high storage tank with a diaphragm pump.
4) Filling and packing out of the warehouse.
Ingredient accuracy is the most important production process for the lubricating oil industry, which directly affects the quality and sales of oil products.
Batching equipment configuration:
1. The full set of lube c weighing system heng is composed of reaction kettle, stirring equipment, storage tank and heating device, etc. The contact part of the full set of equipment and materials are made of stainless steel.
2. Strong electric cabinet: The use of Schneider brand electrical components, used to control the strong electric equipment.
3. Weak current cabinet: used to load industrial controller, to achieve the control of production equipment and data acceptance.
4. Field operation box: The components include weighing display instrument, four-way data display instrument, touch screen, etc. The button can realize the start and stop control of the motor and speed regulation function.
5. Central control room: including industrial control PC, sound and light alarm device and other equipment.
6. In the workshop and tank farm, the static electricity elimination device will be configured, and the voice prompt will be given after the static electricity elimination is completed.
Batching control system:
1. Weighing system According to the size of the process volume can choose Siemens 1200/1500 series control system.
2. Dosing system: automatic feeding system, automatic temperature control system; Auxiliary system: workshop power distribution alarm system, tank farm status monitoring system, etc.
3. The c weighing system uses the industrial Ethernet TCP/IP communication protocol to build the enterprise internal LAN, and transmits the field instrument data by Siemens ProfibusDP communication mode.
