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  EXTRACTION PUMP  
운영자 145
 
 

Extraction Gear Pump VPA

NPSH-optimized gear pump for extraction of very viscous fluids from atmosphere or vacuum.


Typical range of applications

viscosity      

 up to 30.000 Pas

 (standard design)
temperature  

up to 320 °C

  system pressure
(absolute pressure at pump inlet port)

vacuum ... 10 bar

  differential pressure     

up to 200 bar

     

Specific output [cm³/rev.]

1,28 - 2,78 - 4,7 - 10,2 - 25,6 - 46,3 - 92,6 - 176 - 371

Output diagram

(remarks for use see below)

Example:

To assess pump size the following specifications are necessary:

-   dyn. viscosity (e.g.: 3.000 Pas)

-   discharge (e.g.: 3 l/min)

The top diagram determines the maximum permissible speed corresponding to the respective viscosity.
One follows the appropriate line into the lower diagram part, until it cuts itself with the desired discharge capacity. The next intersection point on the left of this with the pump characteristic indicates pump size. The associated number of revolutions is be read on the horizontal axis.

As result one receives the following values:

-   max. speed.: 0,22 m/s

-   pump size: VPC-46,3

--   revolutions: approx. 65 rpm

Remark: For an optimized design of the gear pump further operational data as well as material combinations are to be considered. Therefore please contact variopumps.

Materials (details) and seals (details)

gears/shafts

-   stainless steel (hardened)
-   duplex steel
-   hard material coatings
-   Hastelloy C/TiCN

housing

-   stainless steel
-   Titanium
-   Hastelloy C

bearings

-   carbon
-   Bronze
-   Silicon carbide
-   Zirconium oxide
-   Nickel-Silver
-   hard coatings
-   composites

Customer and/or user-specific special materials and constructions can be realized at short notice!

 

 

double mechanical seal

-   flushable
-   heatable
 

other sealing systems are also available

 

flushing unit

options:
-    with circulation pump
-    heating/cooling
-    with refill unit

Dimensions

 

 
P1 and P2: connections for flushing unit

 

pump size

A

B

C

øD

E

øF

G

H

I

K

VPA-1,28

34,5

51,5

60

20

11

11k5

74

20

96

G1/8“

VPA-2,78

39,5

53,5

60

20

11

11k5

74

20

96

G1/8“

VPA-4,7

44

58

60

20

11

11k5

74

20

96

G1/8“

VPA-10,2

52

66

72

25

14

16k5

88

30

116

G1/8“

VPA-25,6

63

78

79

40

18

19k5

100

30

136

G1/8“

VPA-46,3

76,5

91,5

94

50

22,5

24k5

116

40

161

G1/8“

VPA-92,6

91

113

127

50

28

32k5

142

60

198

G1/8“

VPA-176

112

132

143

65

35

38k5

170

70

240

G1/8“

VPA-371

138

160

164

80

45

48k5

210

80

300

G1/8“

 

*  These dimensions depend on the drive type and size.
All dimensions are only for design purpose. Right to modify reserved.