ZDB.HDB Submersible Electric Pump

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Feature: The ZDB model axial-flow submersible electric pump and HDB model mixed-flow submersible electric pump are the upgraded and updated product of electrical motor set of conventional axial-flow pump and mixed-flow pump, the electric motor of hydraulic pump is an asynchronous motor of dry totally-enclosed submersible which can be operated in water for long term with the advantages the conventional motor series can't match.
1. Because the electric motor is combined with the hydraulic pump, the assembly procedure is no longer necessary for lining up axis of electric motor, transmission mechanism and hydraulic pump on site, which costs labor and time. Now the installation on-the-spot becomes easy and fast.
2. Because of its operation submerged into water, the electric pump can greatly simplify geotechnical engineering and building structure engineering of pump station, reduce erection space and save 30%~40% construction cost.
3. Low noise, no high temperature in pump station, improving the operational environment and underground pump station can be built according to the requirement, as a result, the environmental scene on the ground can be maintained.
4. Submersible electric pump has double and triple mechanical seal and F grade insulation(155oC thermostable) with protection grade IP68(IEC). The pump has hydraulic model of nationwide unified design, which has high reliability and has the same performance of the conventional hydraulic pump so that the customer can select the model easily.
5. Convenient operation, and easy to realize remote control and automatic control.
6. Adopting this type of submersible electric pump is the most thorough approach for building pump station along the river and lake area where the water level fluctuate greatly, as well as for resolving the problem of flood prevention of pump; moreover, the major shaft and intermediate shaft are not required any more, and the machine set can operate more steady and liable.
7. The two models ZDB and HDB submersible electric pump can be used in irrigation and drainage of agricultural field, and can also be used in supply and sewerage water of factory, mine, dock, urban construction, water supply works and power station. The Axial flow submersible electric pump applies to the condition of low lift head, high flow-rate; while the mixed-flow submersible electric pump is very efficient with high performance of cavitation erosion. It is applicable for the occasion where the water level changes greatly and the requirement to the lift head is high. The conveyance medium is untreated water or lightly polluted water. The highest temperature of the conveyed resolution is 50oC.

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Q:What is LG water pump?
LG pump LG refers to the name of the water pump brand, not on behalf of practical significance.LG pump is a high-rise building feed pump.1, LG, LG-B type of high-rise building water supply pump is a vertical multistage type structure, bolt the inlet section, the middle section of the water pump are fixed together, each containing a impeller and the guide vanes, the axial force of the hydraulic balance, the residual axial force by one or a pair of ball bearing;2, the shaft seal adopts special design mechanical seal, so when dismantling mechanical seal, do not need to remove the motor, the middle casing coupling can be removed from the seal, it has the advantages of replacement and convenient maintenance;3, pump transmission is through the shell coupling, vertical motor drive, from the motor side to see, the pump clockwise rotation;4, the suction inlet of the pump is below, the water outlet is above, and its relative position can be chosen according to the user's requirements, 0 degrees, 90 degrees, 180 degrees, 270 degrees for assembly, factory. General pump 180 degrees factory.5, assembly without adjustment, easy disassembly;6, the motor can be equipped with standard Y series of ordinary models.
Q:What is the water pump population pre rotation, what harm?
Is the entrance of water flow in the formation of complex turbulent flow, flow direction, shock, vibration, easy to damage the front entrance device, such as vane impeller, shaft sleeve, sealing element.
Q:Difference between primary hot water pump and two hot water pump
Primary pump variable flow VPF (variable primary)Flow) system is the new layout of central air-conditioning system, compared with the one or two pump system has more advantages in initial investment and operation cost. At present, some with a pump with variable flow system engineering in the operation of many problems,
Q:What is the difference between self-priming and non self suction?
Self suction pump, pumping water conservancy machinery used, composed of a pump body, a rotating assembly, leading assembly, trash cover, and inlet and outlet pipe, a blocking net general assembly; start the motor, dynamic linkage, rotary assembly in promoting the impeller centrifuge, bubble up surging, generates suction. The air inlet pipe, the outlet pipe from the pump body, air exhaust, water outlet pipe outflow, the water pump, excellent performance, deep suction lift, large flow operation, saving time and labor, is the most excellent mechanical pumps in the realistic society.1. self suction pump, as the name implies, pumping tube is under the condition of air, use form a negative pressure pump at work (vacuum), under the influence of the atmospheric pressure will be lower than the water pumping port, then discharged from the pump discharge end. Before this process, there is no need to add "diversion water". The pump with this capability is called a self suction pump".2., some centrifugal or rotary vane pump, before absorbing water, you must add "water diversion" in the pump cavity to form a closed environment, and then pump operation to form negative pressure, to achieve the purpose of water absorption. For example, a manual pump used in rural areas. No self-priming capacity of the pump, each time before adding water to add "water diversion", it is very troublesome.
Q:What is the function of open circulating water pump and shutdown in thermal power plant?
Open pump and closed pump, circulating water pump seems to be the full name of the pump, the industrial pump is to provide industrial water. Both open and closed pumps provide cooling water on the side of the machine, just because the requirements for water quality are different. Closed water is desalted water, while open water is recycled water.
Q:Fire pump control cabinet installation distance, ground height should be how much?
The ground height shall be determined according to the height of the connecting line at the bottom of the control cabinet and the water pump, usually 15~20CM.
Q:What is the function of boiler feed pump, condensate pump, vacuum pump and low drain pump in operation?
The feed water pump is the water pump for the entire boiler, and the water needed by the boiler is supplied by a feed pumpThe condensate pump is supplied to the deaerator after condensing the condensate from the turbineVacuum pump water jet pump should be said, to ensure the turbine vacuum pumpThe low drain pump is the power pump of the low temperature heater
Q:90kw pump star delta start, in the end to use the circuit breaker, AC contactor (Star contactor, angle contactor), what kind of thermal relay?
The first thing to take the star delta start voltage step-down start, star rated by reducing root 3 times, power is also reduced, 90kw / V 3 = 52kw starting current is 5---7 times will reach the rated current of 52kw * 2 = 104A, starting current will reach 500----700A is normal, if you match breaker sister ordinary 800, D at the beginning of the special motor, they start filtering instantaneous current, 250 can be,The star delta starts with only three contactors, and there will be no 4The contactor can be more than 110
Q:How does a pump pump water?
Generally speaking, pumps mostly refer to centrifugal pumps. Generally, the centrifugal pump is driven by an electric motor. Before the pump is started, the pump body and the suction line are filled with liquid. When the high-speed rotation of the impeller, the impeller drives the liquid between the blades of a rotation, due to the centrifugal force, the liquid was thrown from the impeller center to the outer edge of the impeller (flow rate can be increased to 15 ~ 25m/s), the kinetic energy is also increased. When the liquid enters the pump shell, the flow rate of the liquid gradually decreases as a result of the gradual expansion of the flow passage in the volute pump housing, and a part of kinetic energy is converted to static pressure, so the liquid flows out at the higher pressure along the outlet. At the same time, the impeller center because the liquid was thrown out and formed a certain vacuum, and the liquid level of pressure Pa than the center of the impeller to be high, so the suction pipe of the liquid in the pressure difference into the pump. The impeller keeps rotating and the liquid is continuously sucked in and out. Centrifugal pump is able to transport liquid, mainly due to centrifugal force, so called centrifugal pump.
Q:The role of water replenishing pump in circulating system
The water loss, if the level is too much loss, circulation system will not have a negative effect, the other, needs to pay for water pump system, are generally set up a level, when the automatic water level below this post.

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