• KQDL  series  vertical multi-stage single-suction centrifugal pump System 1
KQDL  series  vertical multi-stage single-suction centrifugal pump

KQDL series vertical multi-stage single-suction centrifugal pump

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Product overview

KQD series multistage centrifugal pump is divided into KQDL vertical, KQDW horizontal multi-stage single export-oriented and KQDL vertical centrifugal pump, KQDW horizontal multi-stage export-oriented four more structure. Closer to the pump body of the new return pipe structure design, return pipe is not easy to damage, at the same time enhance the sealing of the pump. Instead of "O" ring rubber bellows mechanical seal is solved easily produce scale, jammed caused by mechanical seal leakage problem, quality is more reliable. Novel structure, superior quality; Running stability, avoid killed; Advanced design, save the investment; Unique parts and reduce the noise.

Application field

KQDL series multistage pump is my company according to the market need and development of series products, this product compared with similar products is small, the head difference between the same specification can be convenient for users to choose. This product is accord with GB/T 5657-5657 < < centrifugal pump technology conditions (Ⅲ) > > standard.

The working conditions


Speed: 1480/2950 r/min

Liquid: clean water or physical and chemical properties similar to water in the liquid.

Liquid temperature: 120 ℃ or less

Flow range: 3.7 ~ 200 m3 / h

Lift range: 12.1 ~ 240 m

The suction pressure of the maximum working pressure: maximum pressure 2.5 Mpa or less + pump





Q: The suction pump has a nominal suction range of 30 metersHow deep can a well be sucked?Well, sixteen meters,
That is impossible. The suction height of the pump is caused by the centrifugal force of the vacuum. The water is sucked into the vacuum
Q: What are the reasons for sealing damage of centrifugal pumps?
Three, water shortages caused by running dry grinding damage.This phenomenon is more common in mounted form inlet pressure, inlet air, air cavity pump, pump boot, high temperature operation of the mechanical seal friction at high speed, can not be cooled, check the mechanical seal, the spring tension is normal, the friction surface of charred black, rubber hard cracking.Treatment methods: exhaust the pipe and pump cavity air, replace the machine seal.Four, install too tight, observe the mechanical seal of dynamic and static ring plane, if there is serious burning phenomenon, flat black and deep traces, sealing rubber hardens, lose elasticity.This phenomenon is due to tight installation.Treatment methods: adjust the installation height, impeller installed, with a screwdriver to move the spring, the spring has a strong tension, release after the reset, there is 2-4mm moving distance can.
Q: Water pump outlet valve sequence
To reduce the impact of vibration, noise and vibration on the valve, the soft connection is best at the pump outlet.The check valve is sometimes checked, so it is placed in front of the outlet valve so that the water can be checked out. I think the order should be: pump outlet, soft connection, check valve, gate valve (butterfly valve)
Q: Is the vacuum pump air compressor?
No, both work in the opposite way. Air compressor, referred to as an air compressor, is a machine that produces compressed air (positive pressure). The vacuum pump is just the opposite.
Q: Does the reservoir water heater press the booster pump (high marks)?
In addition, the water storage electric water heater has a safety valve is O.7MPa, before buying a booster pump, you can check the water inlet valve spring weakness, see the effect of water, barely even, then use it, do not buy.
Q: What are the parts of a pump? How do you classify it?I just want to know
The liquid ring pump: pumping air, the working medium is generally at room temperature water gas lift pump: simple structure of submersible sewage pump: a form of basic principle, performance parameters of centrifugal pump, with it the same. Underwater installation, sound, water cooling condition, screw pump: spiral lower invasion water medium variety formThere are too many kinds of pumps, such as submersible pumps for wells, centrifugal feed pumps, sewage pumps, etc. the submersible pumps are wet, oil immersed, etc.The water pump for automobiles is divided into oil lubrication and grease lubrication,
Q: Is vane pump good or gear pump good?
1) the reversible design of gear pumps can also usually reverse, but reverse after the suction port change, and the pump safety valve does not work; leaf pump is generally not allowed to reverse. 3) the single acting vane pump can be designed to change the eccentric distance by moving the stator at the constant speed, so as to achieve the purpose of variable direction.
Q: The working principle of magnetic pump
Magnetic pumpBy the pump magnetic pump, magnetic actuators, motors of three parts. The key components of magnetic actuator by the external magnetic rotor sleeve, inner magnetic rotor and non magnetic components. When the motor drives the outer magnetic rotor, the magnetic field can penetrate the air gap and non-magnetic material, driven by the inner magnetic rotor is connected with the impeller for synchronization the rotation, to achieve non-contact power transmission, the dynamic seal into static seal. As the shaft, the rotor is within a magnetic pump, isolated sets of completely closed to completely solve the problem of "run, run, drip, leak, remove the oil refining chemical industry flammable, explosive, toxic and harmful media through the pump seal leakage security risks, effectively ensure the health and safety of workers.
Q: Centrifugal pump flow, why can be adjusted through the outlet valve? Can the flow of the reciprocating pump be adjusted in the same way?. Why
Reciprocating pump is a positive displacement pump, the volume change of flow is the unit of time, constant flow speed constant, can not rely on increased resistance to change the flow resistance increase is only leaked, only small changes in flow.
Q: Why is the submersible pump tripped on an electrical switch?There is no electrical leakage protection, directly connected to the circuit breaker, and when the switch on, the circuit breaker jumpedI checked the line is good, the pump did not break down, is not the water pump?
There should be the following reasons: 1) the setting value of the trip switch is too small, and the operating current of the submersible pump exceeds its setting value, and the switch is tripped

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