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FJX Axial Flow Force Circulation Pump, Material ZG, 20#, titanium, 1Cr18Ni9Ti, 304, 316L, CD4MCu
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FJX axial flow force circulation pump

I Summary For Axtal Pump


FJX axial flow evaporative circulation pump

. Overview
1. Scope of application: The company's production of FJX is now used for: diaphragm caustic soda, phosphoric acid, vacuum salt, lactic acid, calcium lactate, alumina, titanium dioxide, calcium chloride, ammonium chloride, sodium chlorate, sugar, Evaporation, concentration and cooling of molten salt, paper making, waste water and other industries, in order to increase the production capacity of the equipment and increase the heat transfer coefficient of the heat exchanger for forced circulation.
2. Installation location: The ground foundation (which can be configured according to the user's needs) is directly suspended from the evaporator.
3. Pump form: horizontal
4. Transmission mode: direct transmission, belt transmission, hydraulic coupling, universal joint transmission.
5. Sealing structure: combined mechanical seal, packing seal.
6. Pump body manufacturing method: casting, welding.
7. Performance range:
   Flow range: 300~23000m3/h 
Head range: 2~12m
Working pressure: ≤0.6MPa 
Working temperature: ≤170°C
Pump body structure: casting or steel plate welding.
Overcurrent part material: ZG, 20#, titanium, 1Cr18Ni9Ti, 304, 316L, CD4MCu
8. Model Description
   Example: FJX 250
FJX: Evaporation circulating pump code
       250: impeller nominal diameter (mm) [pump body diameter]


FJX stainless steel forced circulation pump
 


Second, the structure description
 
FJX axial flow force circulation pump Structure 

FJX axial flow force circulation pump
Structural cross-section of horizontal axial pump (forced circulation pump)
The FJX axial flow evaporative circulation pump produced by our factory has the following characteristics:
  1, low speed, the general speed is less than 980r / min, in line with the crystallization process requirements run smoothly.
2, excellent hydraulic performance, efficiency 〉70% high efficiency zone width, good anti-cavitation performance.
  3, consider the pump medium flow direction is vertically downward, horizontal direction. The great influence of the water flow force on the pump shaft adds a pump shaft casing protection device to the pump body. The subduction force of the medium is transferred to the pump body, thereby ensuring the stable operation of the pump, greatly reducing the influence of the medium on the mechanical sealing force and prolonging the service life of the machine seal. The improvement of this structure has taken a big step in the domestic similar products. In addition, the pump body adopts integral casting rigidity and the intermediate support structure is stable. The horizontal axial flow pump has no guide vanes.
 4, the bearing box parts are square long-span heavy-duty structure, good stability, strong carrying capacity, reliable operation, compared with domestic similar products, easy to install (the original domestic bearing box is split type). Radial short cylindrical bearings and heavy paired bearings are used at the front and rear ends respectively. Its bearings are made of NSK (SKF) or domestic high quality bearings.
 5, advanced shaft sealing, the use of the auxiliary impeller dynamic seal and Borgmann fast-mounted double-end mechanical seal combination, external cooling rinse water, improve the shaft seal working conditions, machine seal life. The outer circumference of the bushing is enlarged, and the wall thickness is thicker and smaller than the domestic similar products.

FJX axial flow force circulation pump
Evaporative circulation pump
Third, FJX axial flow evaporative circulation pump working principle
The FJX axial flow pump transports liquid not by the centrifugal force of the impeller to the liquid, but by the thrust of the rotating impeller blades to cause the liquid to be transported to flow in the direction of the pump shaft. When the pump shaft is rotated by the motor, since the blade has a certain helix angle with the axis of the pump shaft, a thrust (or lift) is generated to the liquid, and the liquid is pushed out to be discharged along the discharge pipe. When the liquid is pushed out, a partial vacuum is formed at the original position, and the outside liquid is sucked into the impeller along the inlet pipe under the action of atmospheric pressure. As long as the impeller rotates continuously, the pump continuously draws in and discharges liquid.
FJX axial flow pump with a head of up to 5 meters and a flange standard of 6 kg. Can also be customized according to needs.
Fourth, the cause of the failure and the elimination method

Fault phenomenon

cause of issue

Elimination method

Shaft power approaches or exceeds motor rated power

1.       The evaporation chamber level is lowered;

2.       Heating the tube to crystallize or the lump to block the heating tube;

3.       The pump flow is too large and the pump is running at a small flow rate;

4.       The solid concentration of the liquid in the evaporator increases and the medium exceeds the design value.

1.       The liquid level rises to the normal value;

2.       Cleaning the evaporator;

3.       Reduce pump speed;

4.       Check the liquid-solid separation equipment and evaporation operation of the evaporation system

Operating flow is lower than design requirements

1.       Heating the tube to crystallize, the ingot blocks the evaporator circulation tube and the heating tube;

2.       Pump speed is not enough;

3.       Blade wear is severe;

4.       The radial clearance between the impeller and the pump body is too large;

5.       Evaporator circulation resistance is greater than pump design lift (unreasonable pump selection)

1.       The evaporator is washed;

2.       Whether the belt is slipping or tightening the belt

3.       Replace the blade;

4.       Surfacing the outer edge of the blade, reworking, or replacing the impeller;

5.       Increase the blade mounting angle or increase the speed. If the motor power is not enough, replace it.

The shaft seal leaks too much

1. The crystal enters the friction surface of the machine seal, and the static and dynamic rings wear excessively.

1. Increase the pressure of the internal flushing fluid. If the static and dynamic ring sealing surface is worn out, it should be repaired or replaced.

Pump vibration or noise is too large

1.       The evaporator liquid level is too low;

2.       2. The vortex entrained in the evaporation chamber of the feed enters the downcomer circulation pipe;

3.       The blades are loose and the impeller is unbalanced;

4.       The inlet side of the pump is blocked by a block or foreign body.

1.       Increase the evaporator level;

2.       Evaporate the chamber down into the vortex baffle or increase the diameter of the vortex baffle;

3.       Adjust the mounting angle of each blade and fix it firmly, and the impeller is statically balanced;

4.       Open the evaporator inlet to investigate and perform the irrigation operation.

Bearing temperature is too high

1.       The axial clearance of the outer radial thrust bearing is too small;

2.       The inside and outside of the inner and outer bearing caps are not placed below;

3.       The lubricant level is too high or too low;

4.       Lubricating oil ingress or deterioration.

1.       Reduce the thickness of the gasket at the outer bearing cap, and adjust the axial clearance to the specified value;

2.       The arrow on the inner and outer bearing caps should be directly above;

3.       Check if the constant oil cup is blocked;

4.       Test pressure check the water-cooled jacket for buck-eye replacement lubricant.


Five, FJX axial flow pump performance parameters
 

II Operating Property Table For Axial Pump

Model

blade angle

Traffic m3/h

Head m

Speed r/min

Efficiency%

Axis Power N

With motor KW

FJX-250


300

2.5

980

60

3.4

7.5

FJX-300


520

3

980

62

6.8

11

FJX-350


1350

4

980

65

29.6

37

FJX-450


2200

4

980

68

35.2

55

FJX-500


2650

4

740

70

42

75

FJX-550


4000

4

740

70

62.8

110

    FJX-500-1


1800

02.5.4

575

68

28.8

55


2200

3.7

675

68

32.5

55


2500

3.6

775

68

36.4

75


2900

4.6

875

68

53.4

90


3200

2.4

370

78

26.8

55

FJX-700      


3460

2.8

400

78

33.8

75


3780

3.4

430

78

44.8

90


4050

3.8

460

78

53.7

110


4400

4.2

490

78

64.5

132

FJX-800        

-4

6142

3.8

500        

75

84.3

155

-2

6790

3.6

76

86.7

155

0

7400

3.7

77

96.6

160

2

7815

3.7

76

102.7

185

4

8417

3.8

75

115.4

185

FJX-900      

-4

7850

3

424      

79

80.98

155

-2

8709

3

79

90.1

155

0

9237

3

80

94.8

160

2

10290

3.08

79

108.6

185

FJX-1100        

-4

9210

3.5

380        

76

111.8

185

-2

10078

3.5

77

132.6

220

0

11000

3.5

78

134.4

220

2

11970

3.6

77

151.1

250

4

12700

3.6

76

162.8

280

 II Operating Property Table For Axial Pump

Product
  models

The installation
  angle of the blade

Capacity
  M3/h

Delivery
  Head
  M

Rotation
  speed
  r/min

Efficiency
  %

Shaft power
  N

Matched Motor
  kw

FJX-250


300

2.5

980

60

3.4


FJX-300


520

3

980

62

6.8

FJX-350


1350

4

980

65

29.6

FJX-450


2200

4

980

68

35.2

FJX-500


2650

4

740

70

42

FJX-550


4000

4

740

70

62.8

FJX-700

-4

4772

3.3

370

75.6

56.7


-2

5320

3.4

400

76.1

64.7

0

5700

3.5

430

76.9

70.7

-2

6154

3.6

460

76.6

78.8

-4

6579

3.6

490

75.2

85.8

FJX-800

-4

6142

3.8

500

75.4

84.3


-2

6790

3.8

76.8

86.7

0

7400

3.7

77.2

96.6

2

7815

3.7

76.7

102.7

4

8417

3.8

75.5

115.4

FJX-900

-4

7748

3.4

424

76.1

94.3


-2

8407

3.4

77.4

100.3

0

9000

3.5

78

110

2

9656

3.5

77.3

119.1

4

10280

3.6

77.4

130.2

FJX-1000

-4

9210

3.4

380

76.3

111.8


-2

1078

3.5

77.5

132.6

0

11000

3.5

78

134.4

2

11970

3.6

77.3

151.1

4

12700

3.6

76.5

162.8

 


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