25 hp horizontal centrifugal pump with 29.2m³/h maximum flow, 103m maximum head and 2900rpm motor speed, 0°, 90° and 180° installation angle of outlet.

Features:

1. The centrifugal pump has the horizontal structure. The diameter of the inlet and outlet are the same. If a protective cover is added, it can be used in the open air.
2. It is easy to install and maintain. No need to dismantle pipeline system, just lifting off the conjunction flat nut of vertical pump. Then all the rotor parts can be taken out.
3. Horizontal centrifugal pump can be operating in series and parallel connection according to the requirements of flow and head.
4. The installation angle of pump outlet can be 0°, 90° and 180° to meet different connection occasions.

Specification

• Model: CHN-HCP-50-315IB
• Power: 25 hp (18.5 kW)
• Number of stages: Single stage
• Input voltage: AC 220V, 230V, 240V, 380V, 400V, 415V, 440V, 460V, 480V
• Input frequency: 50Hz/ 60Hz
• Inlet diameter: 50mm (2 inch)
• Outlet diameter: 50mm (2 inch)
• Flow (min. flow to max. flow): 15.7 m³/ h (12gpm), 22.5 m³/ h (99gpm), 29.2 m³/ h (159gpm)
• Head (max. head to min. head): 103m (338ft), 101m (331ft), 98m (322ft)
• Efficiency: 39%/ 39%/ 39%
• Nominal diameter of impeller: 315mm
• Size: 570*840*360mm
• Weight: 215kg

Dimension (mm)

Tips: Overhauling Method of the Packing Seal of the Single-stage Centrifugal Pump.

1. Clean the centrifugal pump stuffing box and check if the bearing outer surface has any scratch or burr. The stuffing box should be maintained clean, and the bearing outer surface should be lubricated.
2. Check the bearing bounce. The imbalance amount of the rotor bounce should e within the allowable scope, avoiding too serious vibration, which is not good for the stuffing.
3. Apply sealant or lubricant applicable to the media in the stuffing box and outer surface of the bearing.
4. As to the stuffings packed in rolls, it is required to first take a wooden rod with the same size as the shaft neck, and wind the stuffing ring on it, and then cut with the knife. The cut surface shows a 45° slope.
5. The stuffings should be filled in pieces. It is not allowed to fill several pieces in one time. The method is to take one piece of stuffing, smeared with the lubrication agent. Hold each end of the stuffing interface with two hands, spread along the axial direction, make it twist, and then inject it into the shaft neck. It is not allowed to spread in the radial direction, so as to avoid the irregular interface.
6. Take one metal shaft sleeve with the same material or softer material as the stuffing ox, and push the stuffing deeply into the box, and exert a certain pressure to the shaft sleeve with the gland, to shrink the stuffing. The estimated shrink amount is 5%~10% and to 20%. Afterwards, roll the shaft for one week, take out the shaft sleeve.
7. Fill in the second and third pieces in the same way. Attention, when the stuffing pieces reach 4-8, it shall be staggered by 90°in filling. The second stuffing should be staggered by 180°. The 3-6 pieces should be staggered by 120°, to avoid interface leakage,
8. After filling one stuffing, please tighten with the gland, but the compression force should not be too heavy. In the meanwhile, please rotate the shaft manually, enabling the installing compression to spread in a parabo. Afterwards, release the gland.
9. Please carry out the working experiment. If it is unable to be sealed, the stuffing should be compressed tighter. If the heating is too serious, please release it. Please adjust in this way until the leakage is in the dripping type and the heat is not too high(the temperature of the stuffing part is only 30～40℃ than the ambient temperature) before putting into operation.

In addition, in repairing or exchanging the mechanical seal of the packing seal of the single-stage centrifugal pump, there is no need to disassemble the motor and pump gland.