2017-11-20 the Temperature and Pressure Control of High Temperature Melt Gear Pump

the Background of high temperature melt gear pump Due to the nature of the plastic extrusion process, the material must be guaranteed to be delivered to the extruder head under high pressure. With the development of the machinery industry, melt pumps are gradually being adopted by the industry people in the domestic market. ZB series of high-temperature melt pump is used in the plastic extrusion industry, used to stabilize the pressure and improve extrusion output and product quality. High temperature melt gear pump is mainly used for high temperature and high viscosity polymer melt delivery,

2017-11-13 Plastic melt pump industry background

At present, Chinas plastic products industry is still growing rapidly with the steady growth of the countrys macroeconomy. However, the development of domestic plastic products still lags behind that of developed countries. Some aspects of production and sales are not very perfect, therefore, to speed up the development of plastic products industry is an urgent requirement of our social and economic development. With the rapid economic development in our country, this requirement is even more rem

2017-10-30 Plastic Sheet and Plate Extrusion Line

The plastic plate sheet production line is sepecially designed for the extrusion of single layer or multi-layer plates sheets of PVC or PMMA material Main extruder adopts SJ series single screw extruder , machines configuration is based on different material; Double position automatic hydraulic screen changer can be shifted quickly and continuously; Special seal structure assures no leakage; Dynisco melt pump and pressure feedback control system, which provides stable pressure, improve the output and precision of products; Extrusion mold adopts cloth-rack style single or multi-layer extrusion

2017-10-17 what is melt pump

As the polyester melt pump equipment key production line,melt pump istrouble-free, stable, long-period of the entire.Continuous and stable production line production line improve productivity and economic efficiency is important. Melt pump master. What is melt pump? To be used in the melt conveying, metering and pressurizing the melt has compact structure and reliable operation with low energy consumption volume.The shear effect of the melt is small and so on. When high viscosity high pressure outlet flow is stable without pressure waves.

2017-10-17 Melt pump control system operation

Melt pump control system using Taizhou Haige instrument, greatly improving the systems practicality. The control system has the function of display, control and alarm interlock. Pressure measurement using high temperature melt pressure sensor, temperature measurement using K-type thermocouple, temperature controller selection of integrated SSR module. The implementation of pressure control selection inverter motor. Melt pump control system put into operation After the equipment installation and parameter setting is completed, the system can be put into operation. 1, began to pump the front sec

2017-10-17 melt pump manufacturer

China has many melt pump manufacturers .Batte Melt Pump Zhengzhou Co., Ltd. is a professional melt pumps supplier and manufacturer. We integrate design, manufacture and sale. As one of the biggest manufacturers of melt pumps, gear pumps, and metering pump in China, we have own melt pump factory and foreign trade department, so we can provide products as reasonable price. China Melt Pump manufacturers - Select 2017 high quality Melt Pump products in best price from certified Chinese Industrial Pump manufacturers. melt pump manufacturers directory. Choose Quality Verified China melt pump manufac

2017-10-14 Measurement and Control of Melt Pressure

When it comes to the placement of melt pressure sensors the extrusion engineer faces considerably fewer problems compared to the placing of temperature sensors. One of the basic principles of hydraulics pump is that the pressure in a fluid is equalin all directions. This may not be strictly true in the case of a very viscous, moving fluid, but it is close enough for our purposes. One of the few things that the extrusion industry was able to standardize is the shape and size of the mounting hole in the extruder for a melt pressure sensor. This mounting was diagramed. A typical pressure sensor (

2017-10-14 Other Advantages of Using a Melt Pump

The prime reason for adding a melt pump to an extrusion system is to improve the throughput stability - from between 5% t0 8% typical for an extruder used alone to the 0.1% of the typical melt pump with differential pressure control. There are, however, other major advantages in using a melt pump at the output of the extruder: The output can almost always be increased - typically by 15 t0 25%. The throughput curve of an extruder used alone as shown in Fig. 6.2 illustrates that the screw type pump in an extruder is a very inefficient pump. If there is any significant pressure at the die, the ou

2017-10-14 Melt Pump for Extruder

The melt pump for extrudersimply takes away whatever the extruder is pumping. As soon as the output of the extruder is sufficient to fill the teeth, however, the situation changes dramatically. Now it is just as if the extruder is pumping into a brick wall. The melt pump can accept only so much plastic and no more. Attempting to pump more plastic skyrockets the pressure upwards untilit blows the safety blow-out plug, at which time the pressure drops to zero, and the ball game is over Our problem, however, is that if we are going to use the melt pump to meter out the plastic, operation has to b

2017-10-14 Microprocessor Melt Pump Control

As mentioned earlier, the performance of any extrusion line can be significantly enhanced though the use of automated closed-loop controls. It is, however possible to control the extrusion line manually, and many people still do. Back pressure experienced by extruder when the melt pump turns at constant speed and extruder speed is gradually increased. Manual control, however, is not an option for melt pumps . In the following we will explain why it is simply not practical to control a melt pump manually. The problem lies in the nature of the interaction between the melt pump and the extruder.