• QY Oil-filled Submersible Pumps System 1
QY Oil-filled Submersible Pumps

QY Oil-filled Submersible Pumps

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Product introduction:
QYOil-filled submersible pump consists of pump, mechanical seal and motor. Pump is at the bottom part of pump, which is adopted centrifugal impeller. Motor which is triphase is at the upper part of pump and seal is used where pump and motor combine, which is a kind of double end mechanical seal"0"rings are applied to all static joints.
Axial flow impeller design can meet customer demand for big flow

Application:
This series pump because of wide range of flow and head, is extensively used for electrical irrigation, forest water spraying, pumping water from well, water tower deliver and urban construction water supply and discharge for farms, villages, industrial and mining enterprise.

Work Conditions:
The pump can work properly and continuously under following operational conditions:
1.Medium is not corrosive. Sand contents should be max. 0.10% by volume and granular size should be max.0.20mm.
2.Medium temperature shouldn’t be over 40°C and PH should be 6.5-8.5.
3.The pumps should be operated within rated head.
4.The pumps should be fully submerged into water with depth of less than 3m and max. The pump should be min. 0.5m over (he water bottom and not be inserted into sludge.
5.Power frequency should be 50Hz,three-phase vollage 380V.and voltage fluctuation should be 0.9-1.1 limes than the rated.


Q: How much water does the water ring vacuum pump run for an hour? If there is no steam separator, does the water vaporize?
The purpose of the steam separator is to separate the gas from the liquidWater ring type vacuum pump, water, compressed gas is discharged through the exhaust port, if not it is soda water separator is discharged, can not be separated, for the recovery of gas discharged industry is obviously impossible.Soda separator is available, the key is to see the working conditions
Q: What are the characteristics of a pipe shield pump?
Four, high melting point in the pump hydraulic side and the motor side with a jacket, the jacket can be steam or a certain temperature of liquid to prevent high melting liquid crystallization. The outer circulation pipe of the pump should also be insulated (heating) jacket. Five, high pressure shielding pump shell is a high pressure container, so that the pump can withstand high system pressure. In order to support the shield under internal high pressure, the stator coil itself can be used to bear the pressure. Can also be made in high temperature and high pressure under the operation of the canned pump. Six, since the suction port of the pump impeller center is much higher than that in stopping the pump, when inhaled NO liquid in the tube, the impeller and the increase of the pump chamber is filled with liquid, and then start without irrigation, the pump can work. Self-priming pumps are especially suited for extracting liquids from underground containers. In addition, according to different methods can be divided into liquid type, mud type, high pressure pipeline type, as well as for ships, nuclear power plants and absorption refrigeration devices for various types of canned pumps. Can also be divided into vertical, horizontal, online and single-stage, multi-level and other different types.
Q: Why should I pump the pump before starting the centrifugal pump?
Only centrifugal water can be pumped out of the centrifugal blade to generate negative energy at the entrance. There is no water diversion. Only the negative pressure produced by the air is too low to absorb the well water.Water pump has been pumped, centrifugal pump or can not start normally, mostly because of the water pipes and air
Q: Why can the centrifugal pump hold down the pressure?
The pump before starting to pump shell and the water pipe filled with water, and then start the motor, the pump shaft to drive the impeller and water do high-speed rotation, centrifugal water movement, was thrown to the outer edge of the impeller, the pressure water pipeline flow through the volute pump into the pump shell.
Q: How is the pump level of submersible sewage pump determined?
Generally as:The bottom elevation of sump sump plus 300 is the water level of pump stopThe top 300 of the sump top elevation is the pump water level
Q: Is the centrifugal pump large or small?
NPSH is also called cavitation, cavitation is too big to be.3, pump the liquid when working in the impeller inlet will produce vapor due to a certain vacuum pressure, vaporization of the air bubbles in the liquid particle movement under the impact of erosion on the impeller, the metal surface, thus undermining the impeller and other metal, then vacuum pressure is called vaporization pressure, NPSH is excess vaporization pressure of surplus the energy position of the unit weight of the liquid in the pump suction port of. The unit with annotation, (NPSH) r with. The absorption process is necessary NPSH H: pump suction fluid allows the vacuum pump installation height is allowed, in meters.
Q: What are the parts of a pump? How do you classify it?I just want to know
Before opening the pump suction pipes and pumps must be filled with water. Open the pump, the impeller rotating speed, which leaves the liquid together with the rotation under the action of centrifugal force, the left outside impeller injection, injection of the liquid in the pump shell gradually slow the spread of indoor speed, the pressure gradually increased, and then from the pump outlet. The outflow discharge tube. At this time, in the leaves at the center of the vacuum area of low pressure liquid was thrown to the surrounding formation there is no air and no liquid, liquid pool at the surface of the liquid under the action of atmospheric pressure, through the suction pipe into the pump, the liquid is continuously pumped up from the liquid pool is also continuous outflow from the discharge pipe.Mainly by the impeller, pump shell, pump shaft, bearings and packing sealing devices and other components
Q: Is vane pump good or gear pump good?
The main working parts of vane pump is provided with a plurality of sliding vane rotor, when the rotor rotates, the eccentric configuration of stator cavity contour or rotor, blade sliding slot in leaves due to volume changes, resulting in the suction effect. The similarities are: 1, rotary type positive displacement pump has self-priming ability, but are not allowed to do; 2, with continuous flow pulsation, but also have flow and pressure; 3, the theory of flow is determined by the working parts of the size and speed, has nothing to do with discharge pressure; 4, rated discharge size, pressure and working parts mainly depends on the pump speed is independent of the sealing parts and bearing capacity; differences: 1) gear pump structure is more simple, reliable, low price; vane pump has complicated structure and high manufacturing precision parts, the blade is easy to get stuck, more sensitive to the oil clean degree and viscosity.
Q: What are the main performance parameters of the pump?
The amount of liquid supplied by a pump in unit time. Volume flow Q, unit m3 / s. There is mass flow G, unit is kg / s.
Q: How accurate is the metering pump?
Three automatic compensation valve device widely used in diaphragm metering pump, especially with suction height requirements, can only be used by three separate Fujian (safety valve, discharge valve and oil supply valve) compensation device.

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