The Extrusion feeding system adopts automatic control to realize the automatic control and supervision of raw material feeding, weighing and metering, vacuum feeding, dispersion and mixing processes. The dispersion time and cylinder number can be selected and adjusted on the computer according to the production requirements. The opening and closing of the motor equipment and the opening and closing of the feed valve in the process are controlled by the computer.
020-34563445The main tasks of the extrusion feeding system are batching and feeding. Under the premise of ensuring the production material quantity, formula accuracy and system reliability, a relatively large self-developed batching machine is used in the raw material warehouse to centrally prepare the required raw materials for all extruders. This enables all extruders to share one set of batching machines, reducing system costs and improving equipment utilization. At the same time, it can also eliminate the raw material handling process. The prepared raw materials are blown to the corresponding extruder hopper through the conveying pipeline by the positive pressure dilute phase pneumatic conveying method.
The Feeding machine is mainly composed of two Roots blower units, a main feeding pipe and several branch feeding pipes, pneumatic two-branch directional control valves (hereinafter referred to as branch valves) and several cyclone separators. One of the two blowers is a backup blower. Each Roots blower unit consists of one Roots blower, one pneumatic motor and one blower control cabinet. Its task is to generate the compressed air flow required for pneumatic conveying. The blower outlet is connected to one end of the mixing chamber, and the main conveying pipe is connected to the other end of the mixing chamber. In specific applications, The feeding system, the fan unit and part of the main material conveying pipe can be installed in the raw material warehouse. The main material conveying pipe leading out from the raw material warehouse is connected to an independent branch valve, and from this, two branch feeding pipes can be formed respectively leading to the two workshops. Similarly, n branch valves can form n+1 branch feeding pipes. At each position (hopper) where these branch pipes pass through each extruder in the workshop, one branch valve is installed. When it is necessary to feed materials to a certain extruder, turn the relevant branch valves to the corresponding direction to ensure that the material conveying channel is unobstructed. The materials can only reach this extruder and not other positions. Then, the fan will blow the air-material mixture in the mixing chamber through each link of the conveying channel to the corresponding cyclone separator. After separation, the materials will reach the hopper of the corresponding extruder.
