High definition Melt Metering Pumps for Extrusion System - DHK Series Polymer Melts Gear Pump – Vowa

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Vacuum Reactor Discharge Pump—— High Pressure, Channel Heating DHK Series Polymer Melts Gear Pump DHK series melt gear pump is especially suitable for high temperature and high viscosity polymer melt reaction transportation that requires high output pressure, such as resin, chemical fiber and other industries. It is generally installed in the lower part of the reactor and used as a feed pump. This series of melt gear pumps have good self-priming performance and can be used for conveyi...

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High definition Melt Metering Pumps for Extrusion System - DHK Series Polymer Melts Gear Pump – Vowa Detail:

Vacuum Reactor Discharge Pump—— High Pressure, Channel Heating

DHK Series Polymer Melts Gear Pump
DHK series melt gear pump is especially suitable for high temperature and high viscosity polymer melt reaction transportation that requires high output pressure, such as resin, chemical fiber and other industries. It is generally installed in the lower part of the reactor and used as a feed pump. This series of melt gear pumps have good self-priming performance and can be used for conveying and pressurizing polymer materials under vacuum reaction conditions.
The main materials that can be conveyed by the melt gear pump are:
Polymer melt
PET PBT PTT
PA6 PA66 PA12
PE LDPE LLDPE HDPE HMWPE
PP EVA PB
PB PS HIPS ABS SAN
PC PEK PMMA POM
TPU PLA PBS
Other stock solutions, solutions, glues, oligomers, prepolymers, etc. in the polymer material industry;
It can also be used to transport hot melt adhesives, asphalt, paints, adhesives, pharmaceuticals, food, grease, fuels, oils, dyes, coatings, lubricants, polyols and other materials that do not contain particulate impurities.
Technical data:
Viscosity ： 1～30，000Pa•s （1,000～30,000,000cP）
Suction side pressure ： Vacuum（-0.05～-0.09MPa）～4MPa
Discharge side pressure ： 0～35MPa
Differential pressure ： 25MPa
Temperature ： ≤350℃
Heating method ： Fully Jacketed
HTM pressure ： ≤1.6MPa
Installation method
DHK series melt gear pumps are generally installed at the bottom of the reactor and are driven by a motor + reducer + universal coupling. The melt gear pump is a positive displacement forced delivery pump. The pump output flow can be adjusted by adjusting the pump speed. It is recommended Using frequency conversion speed regulation, can realize the nearly linear flow output of the gear pump.

Main structure of gear pump:
Rotor type: helical or spur gear
Heating method: Heat medium heating
Sealing structure:
■ Dynamic melt seal + packing seal
■ Mechanical seal
■ Dynamic seal with cooling melt
■ High temperature resistant packing seal
Main structural materials of melt gear pump:
Pump casing: stainless steel/alloy steel/corrosion-resistant alloy
Gear: Nitrided steel/tool steel/stainless steel + coating/corrosion resistant alloy
Bearing: tool steel/copper alloy/stainless steel + coating/corrosion resistant alloy
Pump size and Technical data

Model	cc/r	Inlet pres. Mpa	Outlet pres. MPa	Max. flow rate m³/h				Temp
				Low viscosity material	Medium viscosity material	High viscosity material	Ultra high viscosity material
				＜50Pa.s	50～200Pa.s	200～2000Pa.s	＞2000Pa.s
DHK-5	5	Vacuum -0.09～4.0	≤35.0	0.041	0.027	0.019	0.012	≤350℃
DHK-10	10			0.081	0.054	0.038	0.024
DHK-20	20			0.162	0.108	0.076	0.049
DHK-32	32			0.259	0.173	0.121	0.078
DHK-50	50			0.405	0.270	0.189	0.122
DHK-75	75			0.527	0.365	0.243	0.162
DHK-100	100			0.702	0.486	0.324	0.216
DHK-160	160			1.123	0.778	0.518	0.346
DHK-200	200			1.404	0.972	0.648	0.432
DHK-250	250			1.620	1.080	0.675	0.473
DHK-355	355			2.3	1.5	0.9	0.7
DHK-500	500			3.2	2.2	1.2	0.9
DHK-750	750			4.9	3.2	1.8	1.4
DHK-1000	1000			5.4	3.8	2.2	1.9
DHK-1200	1200			6.5	4.5	2.6	2.3
DHK-1600	1600			8.6	6.0	3.5	3.0
DHK-2000	2000			10.8	7.6	4.3	3.8
DHK-2500	2500			10.8	8.1	4.7	4.1
DHK-3150	3150			13.6	10.2	6.0	5.1
DHK-4000	4000			13.0	10.8	7.6	6.5
DHK-6300	6300			20	17	10	9
DHK-8000	8000			22	17	13	12
DHK-9000	9000			24	19	15	13
DHK-12000	12000			32	26	18	16
DHK-18000	18000			49	39	27	24
DHK-25000	25000			68	54	38	34
DHK-38000	38000			103	82	57	51
DHK-54000	54000			146	117	82	73
DHK-80000	80000			216	173	121	108
Please consult the manufacturer for larger or smaller specifications

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