Horizontal chemical process pump
HZ (closed impeller type) chemical process pump is a single stage, single suction, cantilever type centrifugal pump which absorbs the advanced technologies from overseas, and is designed based on the advantages of F1, IH, CZ, ZBG chemical process pumps. HZ chemical process pump owns the features of better operation performance, anti-cavitation, long life of mechanical seals and bearings, reliable operation, updated structure and easy maintenance.
■Flow rate: Q= 2~2050 （m³/h）
■Total head: H=3~150 (m)
■Pump diameter: 50~350mm
■The impeller is a closed impeller, which uses rear blades and wear rings to balance axial forces.
■ The impeller and shaft are connected by a key and locked by a special impeller nut. Eliminates the possibility of impeller nuts becoming loose during operation, shutting down, and backflow.
■ Back-pull design, the rotating part can be removed from the housing without removing the pipe.
■ The sealed cavity is designed with a tapered space to install the mechanical seal into a spacious room. At the same time, the impeller rear blade, the inner surface and the guide blade work together to form a self-flushing flow sealed cavity without any external flushing fluid. Self-flushing flow can quickly eliminate the heat on the friction pair; self-flushing flow can avoid the accumulation of particles (<5%) between the moving ring and the static ring, thereby extending the service life of the mechanical seal.
■Single-stage single-suction horizontal centrifugal pump structure, the pump cover is fixedly clamped in the middle
by the connection between the pump body and the bearing housing, and the pump cover is positioned with the bearing
port and the bearing housing.
■The pump body adopts axial suction, radial discharge, foot support type, and can be directly fixed on the base. The tail of the bearing housing is supported on the base by the suspension bracket.
■The impeller and the shaft are connected by a key, and a special impeller nut locking method is adopted to prevent the impeller nut from loosening when the medium is poured during operation or stopping the pump.
■The flushing and cooling interfaces of the pump body, pump cover, bearing housing and sealing end cover are all made of taper pipe thread, which increases the reliability of the pipeline seal. The bearing is made of rolling bearing, oil lubrication, and the oil pool volume is increased.
■The structure of the pump is designed as a rear door. When the inlet and outlet of the pump are not moved during the inspection (ie, the pump body does not move), the impeller, shaft, shaft seal and bearing components can be removed.
■The large conical cavity of the shaft seal box makes the mechanical seal in a spacious cavity, and also cooperates with the back vane, the guide vane of the inner wall of the cavity, and forms a self-flushing flow field in the shaft seal box, thereby eliminating the need The external flushing fluid is used to achieve self-flushing; the heat generated on the frictional secondary surface is quickly taken away, avoiding the accumulation of solid particles (<5%) in the medium on the contact surface of the rotating ring and the stationary ring, reducing wear and prolonging the machine. Sealed life
The pump structure is as follows
5.Seal end gland
7.Front bearing gland8.Front bearing
9. Bearing housing
11. Air vent cover
12. Back bearing
13. Back bearing gland
14. Pump coupling
17. Oil-analysis standard
18. Skeleton oil seal
19. Skeleton oil seal
20. O ring of seal end gland
21. Pump cover washer/O ring
22. O ring of impeller
23. O ring of impeller nut
24. Impeller nut
|Anti-corrosion alloy||Cast steel||Stainless steel|
|China standard||ASTM standard|
Carbon steel SS420 2205 SS304 SS316
|Item||Factory standard||Optional configurations|
|Motor||Reputed China brands||ABB, Siemens, Nanyany, Jiamusi or designated brands|
|Bearing||Reputed China brand||SKF, NSF, FAG or designated brands|
|Mechanical seal||Zigong brand||Burgmann, Sihuan Riji, Chengdu Yitong|
|Flanges&counter flanges||China standard||European std, German std, American std, Japanese std|
|Couplings||Pin type||Flexible diaphragm coupling|
HZ/HZQ chemical process pump is suitable for pumping mineral acid solutions, organic acid solutions, brines, petrochemical solutions, organic compounds and other corrosive raw materials and products. It is mainly used in the below sections.
■Multiple evaporation and MVR evaporation process
■Refinery, petrochemical industries, coal chemical industries and low temperature projects
■Chemical industry, paper making industry, pulp industry, sugar making and other general process industries.
■Water plant, seawater desalinization
■Vessel and at sea industries.