Overview of Core Parameters: It supports 2-6 component pouring, with a flow range of 0.1~150kg/min, and is suitable for the production of various polyurethane elastomers, foam, and RIM raw materials. It is a high-precision, multi-functional core production equipment for scientific research institutes and small and medium-sized polyurethane product enterprises.
I 、 Design Features 1. This equipment adopts an integrated high-speed circulating oil heating system for each circuit, which circulates four times per minute and is equipped with patented oil heat pipe connection technology. The temperature fluctuation of the entire circuit is less than 2 ℃. For MOCA raw materials, the maximum temperature of the circuit can be controlled at the melting point+2 ℃, completely eliminating the problem of local lattice blockage in MOCA and improving product quality. The temperature accuracy of each circuit of the equipment can reach ± 1 ℃. 2. Equipped with a patented dynamic pressure balancing device, it solves the defects of low viscosity raw material pressure deviation and flow fluctuation in conventional equipment, ensuring the accuracy of raw material ratio under low viscosity and low flow conditions. The flow accuracy and ratio accuracy of each circuit of the equipment are both 1%. 3. The patented dynamic pressure balancing device can achieve independence between the pipeline pressure of each component and the mixing chamber pressure: under single component metering and multi-component pouring conditions, the pipeline pressure and the working state of the metering pump remain unchanged, and the calibration does not require disassembly and adjustment. Only the other components need to be turned off, and the calibration can be completed by timed discharge of single raw materials; The pouring nozzle can be connected to several meters long soft conduits, which does not affect the flow rate and mixing accuracy, and improves the flexibility of pouring; Pouring can be completed under reverse pressure conditions, and the pouring nozzle can withstand about 10 bar of reverse pressure, suitable for special processes such as bottom pouring rubber rollers and pressure molds. 4. Equipped with a patented zero loss first pouring system, the first pouring after cleaning the pouring head can produce a bubble free mixture, which can be directly used in the mold, effectively saving raw materials and production time for intermittent production users. 5. Each component of the equipment is equipped with independent flow control and temperature control systems, with a wide range of suitable ratios and temperatures. The mixing delay of the mixing chamber and the rotational speed of the turbine mixer can be continuously adjusted, without the need to modify the equipment, and can be adapted to the casting of PU raw materials such as various elastomers, microporous elastomers, soft and hard foam, RIM, etc. in the market, and suitable for research institutes and small enterprises. 6. The whole machine adopts modular design, compact structure, clear layout, and convenient maintenance. Single component equipped with a unified temperature regulator, equipped with circuit overvoltage and over temperature protection devices, in compliance with European industrial standards.
II 、 Equipment configuration 1. A kettle circuit (1) Pot body part Adopting a double-layer steel kettle heated by circulating oil, with 40% of the full volume reserved for degassing space; The vacuum sealed cover is equipped with a vacuum interface, stirrer, pressure type vacuum gauge, illuminated sight glass, and feeding port; Set the lowest material level alarm indicator; Equipped with a nitrogen/dry air intake system, paired with an intake valve and a 0.6 bar pressure limiting valve; Standard ingredient temperature sensor and digital temperature display device. (2) Heating system Configure an oil medium heat exchanger with a maximum operating temperature of 120 ℃ and equipped with over temperature protection; Equipped with electronic digital oil temperature controller and temperature display screen; Equipped with a hot oil circulation pump with overpressure protection. (3) Measurement transmission system The metering pump is installed in an independent electrically controlled electric constant temperature box; The high-precision gear pump is driven by a reduction motor and regulated by a frequency converter; Equipped with electronic pressure sensors and digital pressure displays; The heat pipe adopts a double-layer stainless steel soft sleeve, with built-in circulating oil heating, and the inner wall of the contact material is made of polytetrafluoroethylene material. 2. B kettle circuit (MOCA, 1, 4BDO and other chain extenders) (1) Pot body part The double-layer steel kettle is heated by circulating oil with the same volume as kettle A, and is equipped with a minimum material level alarm indicator, material temperature sensor, and digital temperature display device as standard. (2) MOCA kettle cover Equipped with a cover material head and an electronic temperature controlled melting grid, the melting grid start and stop are automatically controlled by the lowest material level signal. (3) Glycol kettle cover Adopting a vacuum sealed cover, equipped with a vacuum interface, a pressure type vacuum gauge, an illuminated sight glass, a feeding port, and a stirrer. (4) Heating system Configure an oil medium heat exchanger with a maximum operating temperature of 130 ℃ and equipped with over temperature protection; Equipped with electronic digital oil temperature controller and temperature display screen; Equipped with a hot oil circulation pump with overpressure protection. (5) Measurement transmission system The metering pump is placed in an independent electrically controlled electric constant temperature box; Equipped with MOCA dedicated pump body temperature control device; The high-precision gear pump is driven by a reduction motor and regulated by a frequency converter; Equipped with electronic pressure sensors and digital pressure displays; Adopting double-layer stainless steel soft sleeve heat transfer pipe with built-in circulating oil heating, the inner wall is made of polytetrafluoroethylene material. 3. Cleaning circuit Configure an 18L pressurized storage tank (with visible liquid level indicator), equipped with a feeding port, pressure reducing valve, pressure gauge, and 38 bar pressure limiting valve. 4. Hybrid pouring system Optional two-component and three component mixing pouring heads, supporting direct injection of single/multi-component colorants into the mixing chamber; The pouring head is independently heated by circulating oil from circuits A and B; The dynamic mixing turbine speed is continuously adjustable from 1000 to 6000 rpm; Equipped with a patented dynamic pressure control system, it unifies the pressure of all material group pouring circuits and circulation circuits; Equipped with a patented zero loss first pouring system, supporting programmable automatic cleaning; The manual positioning height of the pouring head is 1.2-1.7m, and the stretching center of the pouring arm is 1m, rotating horizontally 90 °. 5. Color paste system (optional) Equipped with a 5L stainless steel storage tank and a 30~60 ℃ adjustable temperature controller; Electric precision gear pump feeding, frequency converter speed regulation and speed digital display; The stress type pressure sensor monitors the circuit pressure in real time and is equipped with patented feeding and returning circuit pressure balance control technology. 6. Electric control system The electrical control box is equipped with built-in power distribution and automatic control programming components, and is equipped with an RS232 information exchange interface, which can be connected to automatic production lines, printers, and image display screens; The control panel integrates multi-dimensional data display and setting functions, which can display the preset temperature of each storage kettle, the controlled temperature of the heating circuit, the output of raw materials, the pressure and preset value of raw materials, the total output and proportion of dual components; Support 20 preset pouring times and 7-day nighttime preheating time settings.
III、 Core Performance of the New Generation Three Component High Temperature Elastic Casting Machine 1. Support instant switching between two different prepolymers, capable of producing products of different colors and hardness, with a stable and durable switching structure. 2. The machine head adopts a patented rotary valve device (patent number: 9551220), which integrates pouring, reflux, and cleaning functions, ensuring thorough and unobstructed cleaning. 3. An anti reverse device is added to the machine head to completely solve the problem of pouring and pouring materials. 4. The mixing and stirring of raw materials are driven by a variable frequency motor, with an adjustable speed of 3000-9000 revolutions per minute, which can adapt to different viscosity conditions of raw materials. 5. When the formula of the double prepolymer is consistent, it can be used as a two-component pouring machine to expand the capacity of the A raw material tank, achieve continuous production, and improve production efficiency. 6. Optimize the dynamic sealing structure of the machine head, making equipment maintenance convenient and efficient. 7. The sealing ring and oil seal are made of customized high-temperature and corrosion-resistant materials, with stable sealing performance and long service life. 8. The raw material tanks, filters, metering pumps, pipelines, and machine heads of each component adopt a multi circulation structure, which has a fast heating rate and greatly shortens the equipment preheating preparation time. 9. Host mobile devices can be selected according to production needs. 10. During the pouring process, if any component pressure or metering pump malfunctions, the equipment will automatically shut down and sound an alarm, reducing raw material waste and ensuring product quality. 11. Equipped with a host timing start system, the device start and stop time can be adjusted as needed. 12. The overall appearance and operation layout of the machine follow ergonomic design, with a neat appearance and convenient operation.
FEILONG PU MACHINE