1Product Introduction:

The KDD diesel engine multi-stage pump is composed of a diesel engine and a multi-stage centrifugal pump. The pump set is in the form of a horizontal, single suction, multi-stage centrifugal pump. It has the characteristics of high efficiency, wide performance range, safe and stable operation, low noise, long service life, and easy installation and maintenance. For transporting clean water or other liquids with physical and chemical properties similar to water. It can also be used to transport hot water, oil, corrosive or abrasive media by changing the material and sealing form of the pump flow components and adding a cooling system.The axial force is balanced by a balance plate. Shaft seals generally use packing seals, and mechanical seals can also be used according to user needs. Product ExecutionJB/T1051-93 "Types and Basic Parameters of Multi stage Clean Water Centrifugal Pumps" standard.

IIproduct overview:

nProduct model:KDD

nBrief introduction: Inlet and outlet diameter50-500mm, flow rate 6-650m3/h, lift 24-650m

nStructure: Fixed, Mobile

nDiesel engine speed:960-3000r/min

nDiesel engine brands: Shangchai, Dongfeng Cummins, Deutz, Fiat, Ryan, Weifang Kefa, etc.

nMain applications: Mining, urban water supply and drainage engineering, fire protection systems, etc.

IIIUsage conditions:

1) Environmental temperature ≤ 50 ℃, medium temperature ≤ 80 ℃
2) The medium density shall not exceed 1240kg/m3.
3) The liquid level must be higher than the pump inlet, and it is forbidden to idle without liquid.

4Product physical picture:

5Product Configuration：

Product Configuration Diagram

VIStructural reference diagram and working principle:

The driver drives the impeller to rotate through the pump shaft, generating centrifugal forceUnder the action of centrifugal force, the liquid is thrown along the blade channel towards the impeller outlet, and the liquid is collected by the volute and sent to the discharge pipe. The liquid obtains energy from the impeller, increasing both pressure energy and velocity energy, and relies on this energy to transport the liquid to the work site. At the same time as the liquid is thrown towards the impeller outlet, a low pressure is formed at the center of the impeller inlet, creating a pressure difference between the liquid in the suction tank and the liquid at the center of the impeller. Under this pressure difference, the liquid in the suction tank continuously enters the impeller through the suction pipeline and the suction chamber of the pump.

7Technical performance parameters:

8Product features:

1. Automatic start: The diesel water pump unit can automatically start and operate at full load within 5 seconds after receiving a fire alarm/pipeline pressure/power outage/or other start signals;

2. Automatic charging: The battery can be charged automatically by the mains power or diesel engine charging motor to ensure the smooth start-up of the unit;

3. Automatic alarm: It automatically alarms and protects against faults such as low oil pressure and high water temperature in diesel engines, and alarms and shuts down when overspeed occurs;

4. Automatic preheating: put the diesel engine in a hot standby state to ensure emergency operation;

5. Direct connection: Diesel water pump units below 360kw adopt the technology of direct connection between diesel engine and water pump through elastic coupling, which reduces the number of fault points and greatly shortens the starting time of the unit, increasing the reliability and emergency performance of the unit;

6. Users can also request to set other alarm outputs (non-standard supply);

7. Equipped with telemetry, remote signaling, and remote control functions (non-standard supply);