发布时间：2015-01-09
Chemical pump installation and precautions:
1. Press the base size do concrete foundation, to be buried at the same time good anchor bolts.
2. Before installing the pump and motor response inspect each part should be intact, there should be no debris in the pump.
3. Place the unit on the basis, in between the floor and put a pair of chocks basis, by adjusting the wedge pad, aligning the pump level. After adjustment, tighten the bolt.
4. Pump suction, discharge pipe should stand, can not be used to support the pump. Import and export pipeline diameter should be unity with the pump inlet diameter.
5.FZB series self-priming pump should be installed first, then the inlet pipe, fill the liquid and then take exit tube, steering correction. Import pipeline pump and the pump must match, and the total length of not more than five meters, otherwise it will affect the performance of self-absorption, self-priming height can be considered the right of the formula is simple: when the water self-priming 3m / medium density = actual height of self-absorption.
6. The installation is complete, the final hand rotation coupling, check for collision phenomenon, rotated easily even the end of the installation.
7. The magnetic pumps stop pumping medium with a particle easy crystallization, is not allowed under the circumstances of the discharge port closed for continuous operation, the need to maintain a minimum flow rate.
8. In order to prevent debris from entering the pump, should be located at the inlet filter, the filter area should be 3 to 4 times greater than the cross-sectional area of the pipe.
9. The high lift pump discharge piping should also install a check valve to prevent the sudden shutdown of the water hammer damage.
10. It is important to ensure that the pump mounting height in line pump NPSH and consider the line losses and the medium temperature. To avoid the pump body produces NPSH, please must satisfy the following formula:
NPSHa≥NPSHr0.5NPSHa: Available NPSH (m) NPSHr: Required NPSH (m)
NPSHa = 106 (Pa-Pv) / ρg Prefectural s-hf
Pa: acting on the conveying surface of the medium pressure (MPa) Pv: Steam pressure medium (MPa) ρ: medium density (kg / m3) hs: Suction lift (m) hf: Inhalation vascular resistance (m)
g: acceleration due to gravity (m / s)
11. medium-temperature cooling measures taken to deal with mechanical seal to prevent deformation of the mechanical seal stationary ring cracking.
12. medium viscosity is too high, pump performance, power all will change, details, please contact us.
Chemical pump up and running:
1. Before opening the pump should be filled with pump liquid to be delivered (in the case of pump suction), and closes the outlet valve, connect the power.
2. Turn on the power and check the pump rotation is correct.
3. Commissioning Unit 5 to 10 minutes, if no anomalies can be put into operation.
4. Stop, it should first exit valve closed, and then cut off the power.
Chemical pump repair and maintenance:
1. Regularly check the pump and motor, replacement of wearing parts.
2. Long-term shutdown unused pump flow channel should be cleaned and cut off the power.
3. The non-air operation.
Delivery is not strong corrosive media, what to choose pump?
Q: We need transport medium of 5% sulfuric acid, the temperature is around 20 degrees, its less aggressive, what to choose pump?
A: You can use stainless steel (304) medium range of the pump, stainless steel pump can deliver the following:
If the media found your delivery is available in the table below are listed for you some stainless steel pumps 1, CQ magnetic stainless steel pump 2, IH stainless steel chemical centrifugal pump
If the media you are transported unavailable found in the above table, the following listed for you some of the better corrosion resistance of the material:
1, plastic (reinforced polypropylene)
2, ultra high molecular weight polyethylene
3, fluorine plastic (polytetrafluoroethylene, polyethylene FEP)
