What is a cyclopentane polyurethane foaming machine?

The cyclopentane polyurethane high-pressure foaming injection machine with track is a mobile cyclopentane polyurethane high-pressure foaming machine. It uses a frequency converter to control a reducer for movement, offering flexible usage scenarios and overcoming the limitations of traditional fixed equipment. System Configuration and Technical Description

1. Tank Unit
500-liter polyether/mixture tank: used to store polyether; 500-liter working volume, 0.4 MPa permissible working pressure.
Two manual shutoff valves (one bypass valve for wastewater discharge) are installed at the outlet via a tee. The feed port is equipped with a manual valve;
a stirrer with a 0.75 kW motor and 47 rpm; a PT100 platinum resistance temperature probe and controller; a tank safety valve with a set pressure of 0.5 MPa to ensure tank safety; a nitrogen pressure relief valve for maintenance or shutdown; and an overpressure valve for automatic pressure relief.
The 500-liter polyisocyanate tank has a working volume of 500 liters and an allowable working pressure of 0.4 MPa. Two manual shutoff valves (one of which is a bypass shutoff valve for wastewater discharge) are installed at the feed port through a tee. A manual ball valve, a PT100 platinum resistance temperature probe, and a controller are also installed at the feed port.

2. Metering Unit
Polyether Metering Unit, Isocyanate Metering Unit
A high-precision metering device is mounted on a frame with adjustable cushioning. It consists primarily of: a metering pump motor with a speed of 1450 rpm, a Rexroth series high-pressure metering pump, and a pre-pressure control device, consisting of an explosion-proof digital pressure sensor with a reading range of 0-1 MPa. This prevents the pump from running dry. The control pressure is set to 0.1 MPa. When the pre-pressure falls below the set value, the control system alarms.

3. Mixing Head
A hydraulically driven automatic no-material cleaning mixing head utilizes a secondary high-pressure impact mixing process to meet mold opening and closing requirements. The manual control panel features buttons for injection, circulation, emergency stop, no-material cleaning, and gun lift indication. The travel system and piping are connected to the mixing head using high-pressure hoses. The gun head is adjustable above the ground and can be easily raised and lowered using a balancer.

4. Hydraulic System
One 100L oil tank with hydraulic control components, a 10L accumulator, and a 100-bar preload. A hydraulic manifold is installed, equipped with a boost valve, a safety valve, and a manual unloading valve. A pressure gauge displays the hydraulic system's operating pressure, and a pressure transmitter transmits pressure to the PLC control system.

5. High- and Low-Pressure Circulation Unit
The high- and low-pressure circulation switching unit utilizes a frequency converter-synchronized switching valve for fast and reliable operation, allowing for simultaneous switching between black and white materials, effectively preventing material cross-contamination (no seals required, requiring no replacement).

6. Component Testing Unit
To accurately determine the raw material ratio and flow rate, our factory uses ratio measurement from the nozzle tip. This provides convenient, accurate, and accurate measurement of ratio and flow rate.

7. Filter
The scraper filter consists of a fixed plate, a moving plate, and a scraper. This ensures smooth circulation and filtration of the raw material. The filtration accuracy is 200 to 300 μm. Regularly turn the filter handwheel and drain through the bottom ball valve.

8. Plate Heat Exchanger
The heat exchange system consists of two large-capacity heat exchangers, a digital temperature controller, and a solenoid-controlled pneumatic automatic valve. This system, combined with the hot and cold water units, controls the raw material temperature within process parameters.
· The heat exchanger is constructed of stainless steel tubing and installed on the material return line. The temperature is regulated by heat transfer between the temperature-control medium within the exchanger and the foaming material within the stainless steel tubing.

9. Gas Detection System
When a gas leak reaches a certain concentration, the safety system activates an audible alarm and activates the exhaust system to reduce the concentration within the enclosure to zero, allowing safe production.