No seal vertical self-priming pump matters needing attention in the work

why no seal, high-lift vertical self-priming pump cannot be used in low lift

many users before buying vertical self-priming pump no seal, thought the working condition of low head choose a higher lift vertical self-priming pump without seal using the lift is more extensive. In such a misleading error understanding, buy vertical sealing self-priming pump, selected no seal of vertical self-priming pump head is very high. In fact, for the centrifugal vertical self-priming pump no seal, when water pump type, its power consumption is proportional to the practice of pump and flow of intrusive. The pump use head low flow will add; Then the current is higher, the smaller flow, lower power consumption. On the contrary, the lower head, more traffic, more power consumption.

therefore, in order to prevent the motor overload, general practice calibration requirements choose pump pumping head head shall be not less than 60%. When the high-lift vertical self-priming pump without seal used for low head, easy overload electrical heating, the severe situation of motor is burn out. If emergency use, it must use the equipment in the water outlet pipe valve to regulate generally can choose self-help type control valve, to cut out of the water flow, to prevent the motor overload. Pay attention to the temperature of the motor, if the motor overheating, the outlet flow or turn it off in time to prevent burning motor. Some users rely on cutting power supply voltage to mandatory cuts flow, this will add the motor load.

no seal vertical self-priming pump drive pump before the advertent items

in that situation when the pump flow is insufficient, will constitute the balance disc and balance, mechanical seal ring and static ring between conflict cannot constitute a liquid film and attack damage. Therefore, when the pump used to transport high temperature liquid, should be energetic to warm pump before launch, as long as the water pump body temperature to reach agreement on to a pump. Under the cold launched emergency vertical self-priming pump without seal is not allowed. High temperature liquid suggest choose high temperature and high pressure pump is more appropriate.

no seal vertical self-priming pump work pay attention to matters of

rely on a balance disc, the balancing drum pump balance within organizations such as the axial force of the multi-stage vertical self-priming pump without seal, the balancing device with liquid flow, balance liquid through balancing tube connected to the inlet side of the pump. In order to ensure the normal work of the pump, we must pay attention to:

( 1) Equalizer pipe vertical self-priming pump without seal high side should be equipped with pressure gauge, to monitor balance pipe outlet pressure. In vertical self-priming pump without seal work, should pay attention to the temperature rise of water pump, vibration, noise, such as the view, is maintaining the vertical sealing self-priming pump from non-normal damage, axial force of pump when necessary, temperature, oscillation, such as setting interlock, beyond the set value when the initiative to stop the pump.

( 2) Balance should be timely cleaning tube fouling, dredge.

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