PUR Hot-Melt Adhesive Melt Pump: A Comprehensive Guide

The PUR Hot-Melt Adhesive Melt Pump, a specialized type of melt pump, is primarily designed for conveying, pressurizing, and metering high-temperature, high-viscosity melts such as PUR (Polyurethane) hot-melt adhesives. Below is a detailed introduction to this versatile pump.

I. Core Functions

Conveying: It efficiently transports high-temperature melts like PUR hot-melt adhesives from one location to another.

Pressurizing: By applying pressure, it ensures a stable flow of the melt, ensuring uninterrupted processing.

Metering: Provides precise and consistent fluid metering to meet the exacting demands of production processes.

II. Working Principle

The PUR Hot-Melt Adhesive Melt Pump relies primarily on the mechanical rotation of gears. Within the pump body, there exists a chamber where the molten material flows. The gear shaft, acting as a rotating component, is responsible for transferring the molten material from the inlet side to the outlet side. During operation, the intermeshing of the driving and driven gears creates a change in the working volume, thereby propelling the melt. This propulsion mechanism classifies the melt pump as a positive displacement pump.

III. Production Characteristics

Superior Materials: The pump body is typically crafted from high-temperature resistant, wear-resistant, and corrosion-resistant materials like high-temperature alloy steel, optionally coated for enhanced performance.

Enhanced Design: Building upon standard melt pump series, it boasts enhanced design parameters such as high torque, low shear requirements, and superior corrosion resistance.

Advanced Technology: Employs integral quenching technology to ensure the strength and durability of the pump body.

IV. Application Areas

The PUR Hot-Melt Adhesive Melt Pump finds extensive application in scenarios requiring the transportation and metering of high-temperature, high-viscosity melts, particularly in the production and application of PUR hot-melt adhesives. Additionally, it serves various industries including plastics, chemicals, and rubber, capable of handling a wide array of polymer materials like polypropylene, nylon, and polyester.

V. Performance Parameters

Flow Rate: Offers a wide range of flow rates, allowing for the selection of pumps based on specific requirements. Common flow rates range from several milliliters per revolution to thousands of milliliters per revolution.

Operating Speed: Rotational speeds for conveying high-temperature melts typically fall within 10-100 revolutions per minute, with the exact speed determined by the specific process conditions.

Pressure Range: The pump's outlet pressure can reach high levels to cater to different process needs, while requiring relatively low inlet flow and pressure.

VI. Advantages

Compact Structure: Its compact design minimizes footprint, facilitating easy installation and maintenance.

Reliable Operation: Constructed from high-quality materials and advanced manufacturing techniques, it ensures stable operation even under harsh conditions. Low Energy Consumption: The pump consumes minimal energy during transportation, contributing to reduced production costs.

High Volumetric Efficiency: As a positive displacement pump, the PUR Hot-Melt Adhesive Melt Pump boasts high volumetric efficiency, enabling accurate metering and conveying of melts.

In conclusion, the PUR Hot-Melt Adhesive Melt Pump is a powerful and high-performance conveying equipment that plays a pivotal role in the production and application of PUR hot-melt adhesives.

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