Piston Vacuum Pump in Plastic Degassing

Piston vacuum pump belongs to dry vacuum pump. Piston vacuum pump is used in degassing of plastic extrusion machinery. The plastic extrusion degassing system provided by EVP is specially developed for degassing plastic melt in extruders. In this field, our company has many years of rich experience. Plastic extrusion degassing system is usually equipped with oil-free piston vacuum pump, which is extremely energy-saving and suitable for variable frequency motor. The following will explain why piston vacuum pumps are chosen instead of other types of vacuum pumps.

The reason for choosing piston vacuum pump to realize continuous speed control of this kind of equipment is not only because of the main supplier of this kind of vacuum technology, but also because of his good cooperation experience in the plastic industry and industry enterprises for so many years, plus the advantages of this piston vacuum pump.

H Piston Vacumm Pump

Model		H-70	H-150	H-180	H-200	H-230	H-300
Pumping speed (L/S)		70	150	180	200	230	300
Ultimate pressure (Pa)		1	1	1	1	1	1
Pump rotary speed (rpm)		500	500	380	410	450	450
Suitable motor	Power (KW)	5.5	15	15	15	18.5	22
	Rotary speed(rpm)	1440	1440	1460	1460	1470	1470
	Model	Y132S-4	Y132M-4	Y160L-4	Y160L-4	Y180M-4	Y180L-4
Max. inlet pressure (Pa)				1.3X104
Max. Vapor Productivity(kg/hr.)				About 8.4
Cooling waterconsumption (kg/h)		150	200	450	450	450	700
Lubricated oil	Model			1# vacuum pump oil
	Capacity (kg)	18	40	45	45	45	63
Dimension	Inlet（mm）	80	100	160	160	160	160
	Outlet（mm）	50	80	100	100	100	100
Length x width x height (mm)		650 X 630 X 1200	1010 X 680 X 1356	1140 X 940 X 1270	1140 X 940 X 1270	1140 X 940 X 1325	1140 X 1160 X 1325
Total weight (kg)		525	970	1155	1155	1155	1525

Model		H-150G	H-150F	H-200F	H-300F
Pumping speed (L/S)		150	150	200	300
Ultimate pressure (Pa)		1	1	1	1
Pump rotary speed (rpm)		500	450	410	450
Suitable motor	Power (KW)	7.5	11	15	22
	Rotary speed(rpm)	1440	1460	1460	1470
	Model	Y132M-4	Y160M-4	Y160L-4	Y180L-4
Max. inlet pressure (Pa)		1.3X104
Max. Vapor Productivity (kg/hr.)		About 8.4
Cooling water consumption (kg/h)		200	200	450	700
Lubricated oil	Model	1# vacuum pump oil
	Capacity (kg)	40	35	55	80
Dimension	Inlet（mm）	100	100	160	160
	Outlet（mm）	80	100	100	100
Length x width x height (mm)		1010 X 680 X 1356	1305 X 825 X 1350	1300 X 925 X 1450	1300 X 1150 X 1465
Total weight (kg)		970	905	1255	1650

 

piston vacuum pump advantages  ：

1. Vacuum up to – 98 kPa industry leader.

2. Equipped with rubber shock absorber footpad, it runs more smoothly.

3.100% oil-free and maintenance-free.

4. Mute and noise control is about 55 decibels.

5. Small size and beautiful appearance.

6. They are all equipped with overload protectors, so they will not burn out due to overload.

In the face of this special application demand, the two sets of plastic extrusion degassing system provided fully meet customer needs. The system is installed in the mobile frame and can be moved and connected to the degasser when needed. The degassing device controller is connected to the extruder through a simple connector and allows the whole system to operate automatically. The extruder controller sends “start/stop” and vacuum setting signals to the degassing system. The controller sends the measured vacuum value back to the extruder controller continuously, and gives an alarm when the setting deviates from the measured value or the equipment fails. The system also includes an integrated separation system for condensate gas and water vapor.

This modern technology has been applied to all material processes of twin screw extruder, including high temperature polyamide, whose melting point temperatures are as high as 350 degrees C and P P, PC, PC/ABS, POM and P LA. It is a specialty of our company to apply it to the production of micro-particle products.

Our company technicians said that only dry vacuum pump can be applied to this application. The traditional vacuum pump has the disadvantage that the working liquid is polluted: the extracted gas and water vapor will mix with the working liquid of the vacuum pump. Water ring vacuum pumps are particularly vulnerable to contamination of working fluids, which will cost water treatment or increase maintenance costs. In this environment, oil-lubricated vacuum pump also needs higher maintenance costs, and its working oil and filter must be replaced frequently. Therefore, it is most appropriate to choose piston vacuum pump to be applied in this field, and it is the most appropriate way for us to use piston vacuum pump to degasse plastic extrusion machinery.

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