Air-diven Pumps QBY Series

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This series of diaphragm pumps are the latest model at home.They are functioned to take out and suck in various corrosive liquid containing granules,Viscous,volatile,inflammable,explosive or poisonous liquid,procelain slurry,mashed fruit,flue,the reclamation of residual oil in tanker,temporary reversion of tanker,etc.The performance parameters of this series are close to that of German WLLDENPUMPS and American MARIO-WPUMPS.The components in contact with flow are made of stainless steel ,aluminium alloy and cast iron, while diaphragm may be NBR,viton,neoprene or PTEE.

QBY pneumatic diaphragm pumps are driven by compressed air ,steam or industrial waste gas,suction head up to 7m ,delivery head between 0-50m,and flow infinitely adjustable between 0.8-30m3/h.

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Q:Why should the water inlet of water pump be fitted with reducer?
In order to reduce the head loss of water pipe, avoid excessive suction vacuum suction pipe, usually larger than the diameter of the pump inlet diameter, must use reducer connection, installation reducer upper level, under the edge of the flow direction is rising, which can avoid the suction pipe does not accumulate gas.
Q:Does the IP55 indicate the lift on the water pump nameplate?
IP55 represents the waterproof and dustproof rating of the motor
Q:How large is the starting current for a 1.5 kW submersible pump?
If single-phase, the no-load current is about 3.7A, the rated current is about 10A.
Q:What does water pump mean?
According to use: - water pump, pump, slurry pump, sewage pump, sewage pump, well pump, submersible pump, pump, pump, fire pump and other household. It's a device for pumping liquid.
Q:What are the quota items for the complete pump installation?
Complete installation of water pump, including:1. pump installation platform, to obtain concrete and reinforced section (if any)2. anchor bolt installation: cap construction reserved bolt mounting holes of the anchor bolt installation hole grouting taking, (may be incorporated into the 1), and the damping piece related item;3. pump installation: installed in the installation of fixed item taking pump, check the wiring and debugging section, the first cable.
Q:What does the temperature range of the pump mean?
The range of temperature is less than 135 degrees Celsius, which means that the range of use shall not exceed 135 degrees celsius. Refers to the temperature of hot water, high pressure steam boiler inside the water temperature is more than 100 degrees Celsius, your pump is a high-pressure high temperature water pump, generally used for steam boiler or high temperature waterway system. For reference only.
Q:What is a variable frequency water pump? What's the difference between a variable frequency pump and an ordinary pump?
Variable frequency water pump refers to the motor, variable frequency pump should be driven by variable frequency motor pumpFrequency conversion, that is, adjustable frequency, frequency conversion motor is able to adjust the speed, adjust the flow, to achieve the purpose of energy saving, but also start small current, maintenance advantages of small workload
Q:Why is the water pump smaller than the pipe diameter?
In order to reduce the water outlet resistance of pump outlet.The statement should be: if your pump has been selected, then the outer outlet pipe caliber than the water pump outlet diameter one.
Q:Three phase water pump rated power 4000W, is three-phase working water pump, the voltage is 380V, how to find the three-phase pump current, and calculation of public
Three phase water pump motor rated power 4000W is the output shaft power, divided by the motor efficiency (general 85%) is the input power, which is often mistaken. The electric power is =4000/0.85=4706WRated current = electric power /1.732x, rated voltage x, power factor =4706/1.732x380x0.8=8.94A (assuming power factor 0.8).The above three answers are all wrong.
Q:Why is the water pump usually used multi-stage pumps, while the circulating pump is usually a single-stage pump?
The circulating pump is usually used in the closed-loop system, circulating pump will be generated when the pump pressure, the pressure is also said, and the suction pump up is in normal pressure system, the outlet of the closed-loop system, when the system pressure is 0.1MPa, the water pump for water system needs higher than 0.1MPa, the difference of pressure difference the greater the water faster, on the contrary, the smaller the slower the pressure difference; so the normal work must want water pump outlet pressure is greater than the system pressure. The replenishment pump is usually multi-stage pumps, and circulating pumps are usually single pump is wrong, as long as the replenishment pressure difference to meet the requirements, multi-stage pumps and single-stage pumps are not affected.(single stage pump and multi-stage pump difference: 1, single-stage pump water level "is a wheel is a level", an impeller, no other brothers and sisters for help; and a plurality of multi-stage pump impeller, there are brothers and sisters for its help, so that his ability to work is high. Just as a man works alone and a lot of people work together, the work is differentTherefore, as long as the design requirements are met, it is not important to select multi-stage pumps and single-stage pumps.

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