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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.
2017-10-14 Throughput of a melt pump with simple input pressure control
By far the best way to get a stable throughput from an extruder is to use a melt pump on the output. In concept the melt pump is very simple. It uses a pair of closely meshed gears, placed in the main plastic stream. The teeth are filled at the input,leveled off by the housing, and then emptied at the meshing point. The device can be thought of as measuring cups on a wheel. The teeth are loaded at the input and emptied at the output. The important thing to note is that the gear pump is a positive displacement device. There is no channel open between input and output, as in a screw type pump. E
2017-09-28 The external gear pump choose
The external gear pump is a positive displacement (PD) type of pump generally used for the transfer and metering of liquids. The pump is so named because it has two gears that are side-by-side or external to each other. (This nomenclature differentiates it from an internal gear pump, which has one gear positioned inside the other.) The gear pump is a precision machine with extremely tight fits and tolerances, and is capable of working against high differential pressures. The working principle of
2015-09-23 Gear Pumps Types and Applications
Gear Pumps Types can be divided into micro gear pump for solidifying fluids, pumps for paint plant / lecithin / sealant spray automotive industry / thermo forming plates, and booster pump as per gear pumps applications . Gear Pumps Types an
