Chemical open impeller pulp pump

■ Flow rate: Q= 6~1200 （m³/h）

■ Total head: H=5~125 (m)

■ Speed: n=1450/2900rpm

■ Temperature: T=-20~200℃

■ S.g.: γ≤1.85

■ Pump diameter: 50~350mm

• ■ Using semi-open impeller, has 3 slice;

• ■ Semi-open, 3 slice impeller, 8%pulp;

• ■ The impeller is a open 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. 
  

The pump structure is as follows:

■ Soda and inorganic salts: ammonia salt blending, soda manufactured by ammonia soda process, pure soda, caustic soda manufactured by diaphragm process and ion exchange membrane process, chloride and hypochlorite, soda sulfide, sulfate, hydrogen peroxide, etc;

■ Metallurgy: electrolyte of electrolytic copper and nickel, sodium aluminate liquid for aluminum production, acid for cobalt production, ore slurry for zinc production, ammonium vanadate for vanadium production, acid and thiocarbamide liquid for gold production, etc;

■ Fiber and plastic industries: Dacron, dichloromethane, epichlorohydrin, trichloropropane, PVC, DMF, etc;

■ Paper-making industry: pulp digestion liquor, green liquor, white liquor, concentrated black liquor, bleaching liquor, etc;

■ Chemical fertilizer industry: urea, ammonium nitrate, ammonium bicarbonate, ammonium chloride, ammonium phosphate, potassium chloride, potassium sulfate, etc.