1、 Overview
1. Scope of application: FJXTetrafluoroethyleneSteel lined forced circulation pumps are now used for evaporation, concentration, and cooling in industries such as diaphragm caustic soda, phosphoric acid, vacuum salt production, calcium lactate, alumina, calcium chloride, ammonium chloride, sodium chlorate, sugar production, molten salt production, papermaking, and wastewater treatment. To improve equipment production capacity and increase the heat transfer coefficient of heat exchangers, they are used for forced circulation.
2. Forced circulation pumps are divided into vertical and horizontal types, with direct drive, belt drive, hydraulic coupling, and universal joint drive.
3. Sealing structure: combination mechanical seal, packing seal.
4. Material of overcurrent components:
The main materials for the pump body, impeller, rear cover, shaft seal box, shaft sleeve, shaft protection sleeve, throttling ring, impeller cover and other flow components are PTFE, 1Ci13Ni9Ti, 316, 316L, ZG20 #, C4 steel CD4MCu、 Materials such as Monel alloy, Hastelloy C-276, 904L, titanium alloy, and heat-resistant and wear-resistant steel are available for selection under different working conditions.
II FJXSteel lined forced circulation pumpSTRUCTURE DESCRIPTION
The FJX forced circulation pump produced by our factory has a cantilever structure and is installed horizontally. Some specifications have absorbed the characteristics of advanced foreign products, and therefore have the following characteristics:
1. Slow speed type: meets the requirements of crystallization process and runs smoothly.
2. Excellent hydraulic performance, with a 5% increase in efficiency compared to Type II of the same model, a wide high-efficiency zone, and good anti cavitation performance.
3. The shaft seal structure fully considers user requirements:
Combination mechanical seal: The friction material used is high-performance wear-resistant material, with a long service life, and the combination seal is easy to maintain.
Packing seal: There are two types of packing boxes: single packing box and double packing box. Considering the situation of the evaporator, our company has specially designed for users to replace the packing without removing the evaporator material. Both mechanical seal and packing seal can be set in conjunction with the impeller.

4. It is easy to change the direction of the pump inlet and outlet: users only need to reverse the impeller and change the pump direction, as well as the direction of the pump inlet and outlet.
5. High reliability: A guide air chamber is installed at the cantilever end of the shaft to reduce shaft deflection.
6. Water cooled bearing seat: There is a water-cooled jacket at both ends of the bearing, which is lubricated with thin oil and has a long service life.
7. FJX III impeller has excellent anti cavitation performance and can operate normally even under an absolute pressure of 0.05 MPa.
3、 Performance Range
Flow rate: 300-23000m3/h Head: 2-7M
Work pressure: ≤ 0.6MPa
Working temperature: ≤ 480℃
4、 Model meaning
For example: FJX—450
FJX: Forced Circulation Pump
450: Impeller diameter mm
5、 Performance parameters of FJX type forced circulation pump