Plastic Extrusion Melt Dosing Pumps

In the plastic extrusion process, melt metering pump is a very important equipment. Its role is mainly to provide stable pressure and flow for the extruder, so as to ensure the stability of the size and performance of the extruded products. In this paper, we will introduce the characteristics of plastic extrusion melt metering pump, working principle, application and selection and other aspects of the content.

thermoplastic melt pump

First, the characteristics of thermoplastic melt pumps

Thermoplastic melt pump is a simple structure, easy to use mechanical metering pump. It has the following characteristics:

1. Simple structure: the structure of the plastic extrusion melt metering pump is mainly composed of drive shaft, rotor, metering chamber and import and export piping, etc. The structure is simple and easy to maintain.

2. Easy to use: the installation and commissioning of plastic extrusion melt metering pump is very convenient, easy to operate, general operators can master.

3. High precision: the flow rate and pressure fluctuation of plastic extrusion melt metering pump is small, which can meet the requirements of high-precision extrusion.

4. Wide adaptability: plastic extrusion melt metering pump is suitable for a variety of plastic extrusion process, can meet the production needs of different products.

polymer melt pump

Second, the working principle of polymer melt pump

The working principle of polymer melt pump is mainly through the rotary movement of the rotor, the melt from the inlet pipe to the outlet pipe. The rotor is connected to the drive shaft and rotates under the drive of the motor, which drives the flow of the melt inside the metering chamber. The melt is compressed in the metering chamber, the pressure gradually increases, and finally discharged from the outlet pipe.

melt pump in extruder

Third, the application of melt pump in extruder

Plastic extrusion melt metering pump is widely used in the production process of various plastic products, such as plastic pipes, plastic film, plastic plates and so on. In the extrusion process, the melt metering pump can provide stable pressure and flow for the extruder, so as to ensure the stability of the size and performance of the products. At the same time, the melt metering pump can also be flexibly adjusted according to the production needs of flow and pressure, to achieve automatic control of the production process.

pump melt gear pump for plastic extruder

Fourth, the plastic extrusion pump melt gear pump for plastic extruder selection

In the selection of plastic extrusion melt metering pump, need to consider the following factors:

1. Conveying medium: according to the medium conveyed to select the appropriate material and structural form.

2. Flow and pressure: according to the requirements of the production process to determine the flow and pressure range of the melt metering pump.

3. Temperature: Consider the temperature range of the conveying medium, and choose suitable high or low temperature materials.

4. Precision: according to the requirements of product production, select the melt metering pump with suitable precision.

5. Motor power: according to the load situation, select the appropriate motor power.

6. Seal material: according to the characteristics of the medium and the use of the environment to choose the right seal material.

7. Other factors: such as external dimensions, weight, price and other factors also need to be considered.

melt gear pump for extruder

In summary, the plastic extrusion melt metering pump is a simple structure, easy to use, high precision, wide adaptability of the equipment. In the selection and use of the process, need to be based on the actual production requirements for reasonable selection and use of maintenance. At the same time, it is also necessary to pay attention to safe operating procedures and precautions to ensure the safety and stability of the production process.

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