wel submersible pump: 一月 2017

2017年1月22日星期日

Diving with a sewage pump blocked

Diving with a sewage pump blocked: Submersible sewage pump anti-clogging performance Why is more and more value? This is mainly due to two reasons: First, the increase in sewage disposal ...

Different types of submersible pumps selection

Different types of submersible pumps selection: Different types of submersible pumps can be selected according to the following several 1, for wells in the water well or a larger diameter, but the ...

Hot water submersible pump selection

Determinants of Submersible Pump Prices

Submersible pump supporting cables

Hot water submersible pump leakage

ITIF Asia Karachi 2017 in Pakistan

2017年1月19日星期四

Several factors influencing the power of clean water pump

Long-term reasons for not using the water pump leak

Structure and Characteristics of Water – filled Submersible Pump

High-lift submersible pump supporting motor

Reasonable Selection of Submersible Pump Supporting Cable

Submersible pump knowledge

Causes of Heating of Cast Iron Submersible Pump

Features of Stainless Steel Submersible Pump

Deep Well Submersible Pumps Use operating procedures

2017年1月13日星期五

QJ deep well submersible pump installation

2017年1月12日星期四

What is the well stainless steel submersible pump

How to use the stainless steel submersible pump safely

How to maintain hot water submersible pumps

How to choose hot water submersible pump in winter

2017年1月11日星期三

How to conserve agricultural submersible pump

Slack season, agricultural submersible pump should do the necessary conservation, in order to extend the service life and ensure the normal use of busy:
1, check the wearing parts: agricultural submersible pump impeller, ring, bushings, housings, etc. are wearing parts. First part of the pump should be removed, check the wearing parts are intact. Do not use damaged or unqualified spare parts.
2, the replacement of lubricating oil: open the sealed chamber and the motor inside the oil hole screw, the sealed indoor and motor lubricating oil all the internal release, the replacement of new oil to ensure that the lubrication system to work properly.
3, remove the pump shell anti-rust: before the use of spring, should be opened on top of the pump shell, turn the impeller and then close the start, to prevent the parts rust can not start and burn the motor. The maintenance of water-filled motor is particularly important.
4, to ensure that the seal: agricultural submersible pump on the sealing requirements are very strict, replace the sealed indoor lubricants, if the oil is turbid and high water content, you must replace or replace the whole box or seal ring seal to ensure its seal Performance is good.
5, the drying motor: 500 megohm meter to measure the submersible pump winding and the shell of the insulation resistance, if the resistance is less than 0.5 megohms, you should drive out the motor water. Drying methods are: external drying method, current drying method and the two at the same time the joint drying method. External drying method is the use of external heat source for processing, commonly used measures are: ⑴ blowing hot air: the use of electric heaters blower (agricultural small submersible pumps available hair dryer) blowing hot air to achieve the purpose of drying; ⑵ bulb baking: Sealed box, the use of a number of 200-watt bulb for baking. ⑶ current drying: According to the submersible pump impedance and the size of the power of the motor three-phase winding in series or in parallel, and then access to a variable resistor, adjust the current capacity For the rated current value of about 60%, power dry.
6, to ensure that bearing lubrication: water-filled agricultural submersible pump should be replaced to replace the upper and lower cover bearing housing the skeleton oil seal and lithium-based grease. To ensure long-term lubrication of the bearing in good condition to work.
7, check the bearings: Check the motor part of the upper and lower bearings, if found to wear or clearance is too large, must be promptly replaced with new bearings, prohibited “sick” improvise. Check the method is as follows: If the motor is running, resulting in “click” sound, and the cycle and the speed is proportional to, and hand rotation of the rotor is laborious, is the bearing raceway a bit astringent or avulsion phenomenon; if the bearing intermittent Of the “choking choke” sound, hand rotation of the rotor when the uncertainty of the dead, the ball is generally damaged frame, broken inner ring or ball. In such cases, you must replace the bearings, so as to avoid greater damage.

2017年1月9日星期一

Causes of Vibration Noise of Pipeline Sewage Pump

Pipeline sewage pump in the course of running vibration and noise failure, which is why?

First, the rotor pump rotor balance reduced: rotor imbalance, the rotor center and the rotation summary of the new deviation is too large, rotation will produce unbalanced force, especially at high speed, the more obvious the vibration. On the one hand may be manufacturing or assembly, the rotor balance does not meet the design requirements; the other hand, the pump may be running for some time, some reasons such as the deformation of the shaft, the part of the bias grinding rotor rotor balancing accuracy is reduced, It is necessary to re-balance the rotor test.

Second, the pipeline pump cavitation: cavitation process will produce bubbles and bubble burst phenomenon, causing vibration and noise, if it is due to pipeline pump cavitation of vibration generated, it is necessary to consider changing the installation height or increase the system pressure, Also choose the right type of pump is critical.

Third, the pipeline pump in the design of non-operating areas to run: the pump is best to run around the rated flow head, as far as possible to avoid the small flow and large flow to run, otherwise the impact of increased water will cause vibration. When the water flow from the outer end of the impeller blade through the guide vane or volute near the pump head, it will have a hydraulic impact, and the extent of the impact of pipeline pump speed and size of the increase and increase, when the hydraulic pulse ship piping system If the frequency of this water pulse is close to the natural frequency of the pump shaft, piping system, or foundation, a more severe resonance will occur.

Submersible pump suddenly does not turn the main reason

1, submersible pump protection switch tripping or fuse blown, under normal circumstances, the occurrence of switch tripping or fuse off phenomenon is due to the electric pump current increases caused. Submersible pump pump current increase caused by the following reasons:
(1) in terms of the use of centrifugal pump head is too low. The axial pump is used in terms of head is too high.
(2) the supply voltage is low, so that the operating current of the pump more than the rated current.
(3) electric pump two-phase operation.
(4) reverse pump operation.
(5) electric pump pumping mud water or dirt, due to the increase in the proportion of transmission fluid will cause the current increase.
(6) submersible pump pump mechanical failure. Impeller, sealed box, sleeve, bearing or fixed, the rotor core and other parts of the mechanical jam phenomenon.
2, power off or phase failure.
3, submersible pump pump outlet box part of the water, the connection line part of the outlet box, due to damage to the cable, like plastic expansion ring is not compacted, O-ring seal defects have not reached the purpose of sealing and other reasons, will So that outside the water leakage into the outlet box, causing the cable core and ground due to blown. Encountered this failure, must open the outlet box part of the broken connection, and wrapped with insulating tape, and then eliminate the outlet box leakage reasons, then the original assembly is good, you can continue normal use.

Considerations when using a submersible pump

(A) The direction of rotation of the submersible pump must be correct
The correct steering of the submersible pumps, looking down from the top, the impeller should rotate counterclockwise. Motor and pump assembly, you can test the power cord in advance, so that the motor steering in line with the above requirements. Note that the motor in the test run, the motor chamber must be filled with the required liquid, in the air, try to turn the time not more than 1 minute. If the submersible pump has been assembled, you can not try to turn in the air, so as not to damage the rubber bearing submersible pump, then you can observe the operation of the submersible pump to determine whether the correct steering pump. In general, in the same conditions and the installation of water pipes under the circumstances, the greater the volume of its rotation in the right direction. Submersible pumps if the long-term reversal, while the protection switch and failure, the submersible pumps may be burned due to overload, so every time the power cord for access, pay close attention to the direction of rotation of the submersible pump.
(B) Check for abnormal conditions
Close the switch, the first to see whether the normal operation of the pump (which can be reflected by the ammeter and sound). If there is an abnormal situation, you must disconnect the power supply within 10 seconds to prevent damage to the submersible pump windings.
(C) check whether the voltage to meet the requirements
Always check the operating voltage of the submersible pump to ensure that the deducted cable voltage drop, the direct supply voltage of the pump windings in the 342-418 range.
(D) often check the submersible pump current value
In normal operation, the current value shall not exceed the rated current. When required to overload the use of electric pumps, the maximum operating current shall not exceed 5% of the rated current value.

2017年1月8日星期日

DC40V solar pump for Kenya Client

Water pump IP protection class standard

Hot water submersible pump advantages

Relative to the traditional products, hot water submersible pump more energy efficient, but also higher efficiency. Many manufacturers are constantly improving their products, some of which products contain the technology has also developed by leaps and bounds to promote the overall development of China’s industry and growth. According to the requirements of many buyers, pump valve network also summed up the hot water submersible pump some specific advantages.
Advantages First, energy saving more environmentally friendly. Hot water submersible pump energy consumption has always been a matter of concern, the current energy-saving products on the market is more popular, and its utilization is also higher. Comprehensive energy efficiency ratio can reach three to six times, and run-time environmental protection and non-toxic, is very suitable for our purchase.

Advantages Second, the use of more secure. Products are the use of a new operational technology, in the course of the use of products to ensure the safety. Traditional products prone to corrosion, explosion, etc., in the new hot water pump has also been improved, does not appear similar to the situation, an increase of the production life. If you want to know more hot water pump products and prices, please log in directly

Advantages Third, the maintenance more convenient, cost savings. The new hot water submersible pumps have a longer life, manufacturers of products is also a long quality assurance and after-sales, you can feel at ease to buy. As long as it is in accordance with the normal operation of the use of methods, there will not be much of a problem, maintenance is also quite convenient, manufacturers completely help you solve the maintenance problems. Valve trading network is also more types of products, you can compare according to their needs to buy, site customer service will help you identify and select to ensure that the interests of consumers is not compromised.

Technical maintenance of hot water submersible pump

Fault Treatment of Hot Water Submersible Pumps

2017年1月6日星期五

Long shaft deep well pump before the check of the provisions

Long shaft deep well pump before the check in place to note from the following aspects:
The diameter of the well should be within 50mm of the maximum dimension of the pumped well, so that the pump body can freely move up and down in the well and shall not damage the dive cable;
Second, the well tube tube out the base corresponding plane should not be less than 25 mm;
Third, between the well pipe and the base should be put soft isolation layer;
Fourth, the size of the middle of the top of the base should be left to meet the pumping pipe and pump base connection needs;
Fifth, the well should be free of sludge and dirt, debris;
Sixth, the water pipe should be straight, thread and flange end should not bumps, and should be cleaned;
7, the long shaft deep well pump should still make the following checks;
1, the end of the pump shaft should be smooth, the shaft at both ends of the support, the radial radial should not be greater than 0.2 mm; thread should not bumps, and should be cleaned;
2, the bearing bracket and rubber bearings should be intact, rubber bearings should not be contaminated with grease.
8, submersible pump should still make the following checks:
1, the flange on the protection of the cable groove, no burrs or sharp corners, and should be clean;
2, the electrical connector should be immersed in water for 6 hours, with 5000 volt shaking table measurement, insulation resistance should not be less than 5 megohm;
3, the motor stator windings immersed in water at room temperature for 48 hours, the chassis insulation resistance should not be less than 40 megohm.

Axial long shaft deep well pump compliance

Notes on installation and maintenance of deep well pump

Environmental requirements for the use of deep well pump

2017年1月5日星期四

Construction Characteristics of high-lift submersible pump

1, ATQJ series high-lift submersible pump, submersible by the three-phase asynchronous electric pump and pump some of the two constitute. The motor is directly connected with the upper part of the pump body, and the upper end of the motor shaft is provided with a reliable shaft seal device, which can effectively avoid the exchange between the coolant in the motor and the pumped medium. The pump can run safely and reliably for a long time.
2, submersible pumps for single-suction multi-stage vertical centrifugal pump; submersible motor for the wet, vertical wells with submersible motors. The motor is directly connected to the water pump through the barrel coupling.
3, the motor winding nylon sheath nylon water resistant magnet wire. Motor cavity filled with clean water can be.
4, motor-guided bearings with water-lubricated bearings. The lower part of the motor can not accept the axial thrust of the pump thrust bearings, high lift pump thrust bearing with nickel-containing copper fan block, and it is the import of the Philip Booth skateboard to accept pump up and down axial force .
5, high-lift submersible pumps in the pump and motor center additional axial load bearing, head can be increased to 1500m.

Well submersible pump can not be normal backwater reasons

A customer consultation: home more than 20 meters deep well submersible pump, head 40 meters, a few days ago because the water pipe off the pump, to put up a good re-plug. Can be re-placed in the well, the water is very mixed, must have stirred the following sediment. Pumping after the closure of the submersible pump was found in the water pipe does not go down, not far from the exit of the park. And so on for a while or do not drop, so they open the well submersible pump pumping some, repeated several times, the water down. Can be pumping the next day when the water does not occur back to the situation, sometimes repeated pumping several times to drop the water, and sometimes no matter what. Now is the winter, very worried that the water pipe was frozen at night. Then the water will become a problem.
Shanghai weihu Pump Co., Ltd. recommends that you: Now a lot of well submersible pumps are comes with a check valve, you said the situation is the occasional check valve work occasionally does not work. Once again into the well, out of the water is very mixed, presumably stirring the following sediment. Is a normal phenomenon. If your land is a cold area, then you really need to transform your pump about, the submersible pump check valve is actually a piece of rubber skin, removed on it, the pump power, the water inside the pipe will be natural Down, and the water level of wells.

Conditions and Requirements for Well Submersible Pumps

Safe and reliable high-lift submersible pump

2017年1月4日星期三

Precautions for Pumps in Pumping

Analysis of difference between pumps and blowers

The use of small stainless steel submersible pump

2017年1月3日星期二

Circulation pump action and installation requirements in domestic heating systems

Not only in industrial production will be used in the circulation pump, and even home heating systems also need to install the circulating pump, helps to simplify the installation of the entire heating process, optimize the system, and to overcome the system due to air bubbles caused by cycle blockage The problem.
In the case of natural circulation, the circulating pressure of the heating system is derived from the difference in the specific gravity of the water, and the cycle pressure is usually very small. Once the bubble is generated, the circulation is seriously hindered. It is also because the natural circulation of power is very small, so usually a very thick trunk to reduce system resistance, even so, the system often recurring or heat problems.
However, after the installation of the circulating pump is different, whether it is cooling, energy consumption or the sustainability of the cycle can be good to further promote the heating system, the stability of heating. But the attention can not be ignored, or even a circulating pump can not function properly.
Before installation, check whether the circulating pump inlet and outlet are blocked by foreign matter. Rinse the debris in the system pipe as far as possible before the system is put into the system, so as to avoid blocking the impeller around the impeller during the operation of circulating pump, and cause a certain degree to the parts. damage.
Install the circulating pump when you try to force soft, do not vigorously, so as not to damage the pump; circulation pump inlet and outlet should be equipped with a live joint, the purpose is to facilitate the assembly and disassembly. The connection of the system should adopt the three-wire plug with ground wire, and the ground wire end should be connected with the motor shell to ensure the safety.
Although the circulating pump itself is relatively low noise, but still need to check whether the rotation, the simpler way is to listen to a screwdriver to listen. In order to ensure safety, do not circulate the pump for a long time in the state without water running.

The daily maintenance of submersible pump commonly used knowledge

Fountain pump is currently used in routine maintenance small knowledge

At present, the routine maintenance of fountain pump is the guarantee of safe and normal operation. Therefore, it is to eliminate and prevent the operation of the unit during the planned maintenance of the accident.

Method / step
1 fountain pump daily maintenance of the main contents are as follows:
(1) Check and handle loose bolts or nuts. Such as the door, bolts, pins, pins, double-suction centrifugal pump shaft sealing device packing tightness, air compressor valve and so on.
(2) oil, water, gas pipeline joints, valve leakage treatment.
(3) motor carbon brush, slip ring, insulation and other inspection processing.
(4) Check the trash rack before there is no water debris.
(5) to keep the motor dry, check the motor insulation.
(6) repair gate hanging point is solid, the door side with or without blocking material, corrosion and wear.
(7) gate opening and closing equipment maintenance.
(8) crane maintenance.
(9) unit equipment cleaning.
2 submersible pumps on a regular basis on the submersible pump and its control system for comprehensive maintenance, at least a year to do a comprehensive preventive maintenance l, including: when the boot sound and voltage and current vibration abnormalities, start the device work is normal, over-temperature Whether the leakage of water alarm, the control of the establishment of multiple protection is often action, the main cable and control cables are aging and cracking, the main contactor with or without dead stick oxidation or burr, thermal relay settings are correct, winding insulating layer with or without signs of aging, Ground insulation resistance is too low, three-phase winding resistance is balanced, the stator rotor asked whether the chamber or scratches, control system level gauge is accurate, the upper and lower limits of the output is normal and reliable, float action is reliable, temperature detection device Whether the aging of the malfunction, the oil with or without emulsification, mechanical seals are intact, bearing wear and tear, whether the impeller wear or cavitation, the shaft is rusty deformation or wear, screw the motor inside and outside loose, cooling jacket and Circulating water pipes with or without debris, pump Ll and the surrounding sediment deposition or blockage. In the preventive maintenance and submersible pump operation process, the right to distinguish between over-temperature alarm, the alarm is really over-temperature or aging components of the malfunction. In the case of component aging, the signal will only access the alarm signal, not to directly participate in control, to reduce the frequent start of the submersible pump.

Maintenance of Centrifugal Pump

Fault Analysis of Circulating Water Pump in Air Conditioning (1)

2017年1月2日星期一

Analysis of Common Faults of Six Kinds of micro – pumps

Application of submersible sewage pump in agriculture

Heat conduction oil pump does not cycle the work of the five major reasons

High temperature hot oil pump mechanical seal replacement installation

High temperature hot oil pump before installation to carefully check the number of assembly sealing parts is sufficient, Po Taibang components are damaged, especially the dynamic and static ring without bumps, cracks and deformation defects. If there is a problem, repair or replace the spare parts. Check the chamfering of the sleeve or gland is appropriate, if not meet the requirements must be trimmed.
The tightening gland should be carried out after the coupling is found. Bolts should be evenly tightened to prevent gland section deflection, with a feeler or special tools to check the points, the error is not greater than 0.05 mm. Check the gland and shaft or sleeve diameter with the gap (and concentricity), must ensure uniform around with a feeler to check the point tolerance is not greater than 0.10 mm. High temperature hot oil pump spring compression according to regulations, not allowed to have too large or too small phenomenon, the required error of ± 2.00 mm, the General Assembly increased cross-section than the pressure to accelerate cross-section wear. Too small will result in less than the pressure can not play the role of sealing, spring installed in the spring seat to move after the flexible. With a single spring to pay attention to the rotation of the spring, the rotation of the spring axis should be in the opposite direction of rotation. After moving the ring to be installed to maintain a flexible move, the dynamic ring after the spring should be able to automatically spring back.
High temperature hot oil pump mechanical seal components and their related components of the contact surface, before installation must be cleaned with acetone or anhydrous alcohol. The installation process should be kept clean, especially dynamic and static ring and auxiliary sealing components should be no impurities, dust. Static and static ring surface coated with a layer of clean oil or turbine oil.

Corrosion of stainless steel deep well pump

The stainless steel deep well pump is a water lifting device which works directly with the motor and the water pump. It has the advantages of simple structure, high unit efficiency, low noise, safe and reliable operation and easy installation and maintenance. It is suitable for extracting water from deep wells, hot water wells and oceans. It can also be used in rivers, reservoirs and aqueducts. It is mainly used for farmland irrigation and human and livestock water in plateau mountainous areas. It can also be used in cities, factories, railways, mines and construction sites. Drainage use.

The control of groundwater on deep well pump corrosion mainly from two aspects. One is to improve the corrosion resistance of the pipe, the use of good corrosion resistance of the material. The second is to remove or inhibit some of the factors that produce corrosion. Generally have the following anti-corrosion measures:

1. The use of high-quality materials, good corrosion resistance of the pipe, connecting screws, copper wire rope, can be doubled to extend the service life. The same kind of metal materials as far as possible the use of smooth surface, not rough; with annealing, no hardening. Stress concentration at the welded joints prone to corrosion, in the production and installation should be avoided.

2. Coating (plating) protective layer in the pipe surface coating (plating) protective layer has the following characteristics: electrical insulation, integrity and durability, after coating the material has a certain adsorption and strength, and non-toxic and economical.

3. Replace the screw deep well pump well pipe connection screw, every year to make wellhead maintenance replacement, preferably with galvanized screw connection. Wire rope coated with oil or plastic tube.

4. Strengthen the regulation and control Heavy calcium carbonate precipitation in the region, as far as possible to take various measures to reduce the value of water supply pipe wells jump to reduce the water rate, that is, increase the filter diameter, increase the water area, when the water required to determine the use of small pumping The upper and lower limit of the diameter of the gravel.

Causes of Blockage of Submersible Sewage Pump

Submersible sewage pump anti-clogging performance Why is more and more value? This is mainly due to two reasons:

First, the sewage treatment costs increased. Industrial enterprises are working to reduce the water consumption per unit of product, which makes the sewage solids and fiber content is getting higher and higher.

Second, the submersible sewage pump more and more use of energy-saving means, is the speed regulation of the drive, and speed regulation can not guarantee that the sewage pump will not plug.

Impurities for the frequent impaction pump impeller problems, the initial operation of each device will be used to clear, clear overnight blocking method. Although this avoids downtime, but often disassemble the pump, resulting in parts and other parts of the pump pump ring increased wear and tear at the same time each time a lot of manpower. To change this situation, the installation of carbon steel in the pump inlet pipe anti-fouling box, and was 45. Inclination. Use a filter inside the box to filter out impurities again to avoid clogging. Team to conduct a monthly anti-pollution 1 to 3 times the clean-up. After the implementation of this program received a certain effect, human consumption is eased. Anti-fouling the bottom of a vent valve, but there are still dead ends. Part of the sewage and impurities in the corner after the accumulation, in the clean-up easily lead to minor gas poisoning injuries, is not conducive to safe operation.

Diving with submersible sewage pump rotor blade morphology is divided into two kinds, respectively, vortex-type leaves and cutting blades, leaves of these two forms of the most widely used. The swirling impeller does not move in the medium to be conveyed. The medium to be pumped is guided to the pump chamber according to the hydrodynamic principle, and the pumped medium flows from the impeller. Thus, long fibers or solid matter in the pumped liquid medium are also pumped together. The cutting blades, can be a large block of solid material chopped, so no longer plug.

Maintenance of High lift Submersible Sewage Pump

High lift submersible sewage pump with a significant energy saving effect, anti-winding, no plug, automatic installation and automatic control features, in the discharge of solid particles and long fiber waste, has a unique effect. Can be installed in a small and simple pumping station, can be hidden in the ground without causing any obstacles,
High lift submersible sewage pump can be quickly and easily along the guide rod down to the liquid, the use of flexible, easy assembly and disassembly, according to user requirements for automatic control of water level, and with automatic protection devices and electronic control cabinet.
Maintenance of High lift Submersible Sewage Pump
1. Pump should be someone to manage and use, and regularly check the electric pump winding and the insulation resistance between the chassis is normal.
2. Each time, especially for the thicker than the viscous slurry, the pump should be run in water for a few minutes to prevent the pump to leave sediment, to ensure clean the pump.
3, such as a long time when the pump should be removed from the water pump, not long-term immersion in water, to reduce the chance of motor stator winding moisture, increasing the pump life.
4. In the normal state of the pump every 300-500 hours after the filling or replacement of the oil in the oil chamber so that the mechanical seal to maintain a good lubrication and improve the mechanical seal life.
5, pump disassembly, maintenance, chassis components must be inspected by 0.2MPa air tight test to ensure that the motor seal and reliable.
6, between the impeller and the pump seal ring with a sealing function, such as sealing damage will directly affect the performance of the pump, if necessary, should be replaced.