introduce
High temperature melt pump, also known as hot melt glue pump or melt pump extruder, mainly consists of motor, pump body, gear, shaft, seal and other components. Belonging to the positive displacement pump, it relies on the meshing of the main and driven gears to cause changes in the working volume during operation to achieve the purpose of conveying molten material. The working volume is composed of the pump body, the gear teeth, and a bearing sleeve with side plate function. When the gear rotates, the melt enters the grooves of the two gears in the suction chamber. As it rotates, the melt is brought into the discharge chamber from both sides, and the gears mesh again, causing the melt in the grooves to be squeezed out of the discharge chamber and sent to the outlet pipeline. Bearings cannot use the usual lubricating grease to avoid contaminating the melt, and melt self-lubricating is usually used. Suitable for conveying liquids with high viscosity and no particulate impurities. It has the characteristics of high output pressure, high viscosity of the conveying medium, high operating temperature, vacuum input, convenient speed adjustment, and large flow range. The material of the pump is temperature resistant, wear-resistant, corrosion-resistant, and has sufficient strength and dimensional stability.
Usage characteristics
1. It can be applied to high temperature (350 ℃), high pressure (35MPa), high viscosity (20000Pa • s) working conditions.
2. Optimized channel design, avoiding dead corners within the channel, reducing material residue, and improving product quality.
3. Improved gear parameter design makes the output pressure more stable and the pulsation rate lower, making it suitable for precision extrusion.
4. Made of high-temperature alloy steel, with good wear resistance and long service life. Choose different sealing methods to adapt to a wide range of viscosity.
5. Multiple installation methods can be used, and the input shaft of the high-temperature melt pump of the extruder can be arranged horizontally or vertically (both upward and downward).
6. The drive system generally includes: motor, reducer, universal coupling, pump connection head, reducer connection head, etc. The complete set of equipment includes a melt pump, inlet and outlet connectors, drive systems, control systems, etc. Customers can choose according to specific circumstances.
Applicable occasions
(1) Used in the polymerization reaction process to transport high viscosity melt.
(2) Used in melt spinning as a booster pump.
(3) Applied to extruders or injection molding machines to improve extrusion efficiency and reduce extruder load.
(4) Used for conveying resin and molten resin, making the melt uniform and applying pressure to the mold head.
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