Talk about the non clogging submersible sewage pump in the transport and use aspects of the matters

Non clogging submersible sewage pump is in on the basis of foreign advanced technology, combined with the use of domestic water pump features a new generation of products, with a remarkable energy saving, anti wound, non blocking, automatic installation and automatic control characteristics. In the discharge of solid particles and long fiber waste, has a unique effect. In the major production areas have shown good strength. So for the transport and use of the sewage pump, we have mastered it? If you never know, you can look at the contents of the:

1, never allow the pump or pump lifting cable suspension, in handling or suspension pump, ring chain hook hook on the handle or available in the upper;

2, in the use of mobile, the water hose can be used in front of the standard form of hose connectors, connected to the outlet pipe of the pump, the use of fixed, can be based on the flange of the coupling device standard setting pipe;

3, can not be placed at the outlet of sewage pump, when the pump seat placed in the mud or sand on the water pump ", as a result of vibration generated subsidence, then recommend the user will pump suspended or put in a larger floor;

4, if the pump continues to run at 0 degrees Celsius temperature, can continue to use, but if the need to stop when the pump should be cleaned up;

5, the outlet pipe diameter shall comply with the requirements, but in the transportation distance, also can properly reduce the diameter but easy to cause congestion, reduce the transmission efficiency and economy;

6, used in sewage pump, after long time running, mud and other debris may accumulate in the case around, reduces the heat transfer rate, the temperature rise of the pump, shorten the service life of the motor, or cause the trip so It is without rhyme or reason., after a certain period of time for each running application for flushing pump hose keep it clean;

The use of 10#-30# mechanical oil lubrication, cooling and sealing 7 pump, due to seal wear, lubricating oil leakage, and the transport medium may also pass through the sealing into the motor, then please will be pumped to the repair department or entrust maintenance so as not to replace the seal, the pump motor burned out;

8, not to cut off the power supply, do not move the pump in the pump work, not "contact with the surrounding water, to prevent the pump in case of leakage, and no ground leakage interrupter device, causing electric shock accidents;

9, submersible pump installation after long-term immersion in water for not, thereby increasing the motor damp opportunities also suggested running at least 4 hours every week to check its functionality and adaptability, otherwise, should be placed in a dry place to spare.

Above is a non clogging submersible sewage pump in the transport and use of the nine points of attention, we must bear in mind that to prevent the use of errors, to bring damage to the sewage pump.

Seven conservation methods to share submersible sewage pump

Submersible sewage pump is used in the form of integrated motor, at the same time into the work of the pump liquid products, sewagecanlongfibers, bag, belt, grass, cloth and other material tear, cut, thensmoothdischarge, especially suitable for conveying liquids containing hard solids, fibers, liquid and particularly dirty, sticky, slippery. Therefore, the submersible sewage pump must be done in peacetime maintenance work, in order to slow down the wear of the sewage pump. Here is to look at the conservation of submersible sewage pump knowledge:

1, check the parts: submersible sewage pump impeller, ring, sleeve, bearing and others are wearing parts. The first part of the pump should be removed, check whether the vulnerability is intact. Use of damage and non qualified spare parts.

2, replace the lubricating oil: open the sealing chamber and the motor oil hole screw, the sealing interior and motor oil all released, the replacement of new oil, to ensure the normal operation of the lubrication system.

3, anti rusting shell pump down: before use, should open the shell on a pump, starter switch and then rotate the impeller to prevent rusting parts and should not normally start to burn motor. This maintenance is particularly important for water filled motors.

4, to ensure that the bearing lubrication: the water filling submersible sewage pump should be replaced on the bottom cover of the bearing chamber of the skeleton oil seal and lithium base grease. To ensure that the bearings are lubricated for a long time in a state of good lubrication.

5, to ensure the sealing of agricultural submersible sewage pump is very strict requirements for sealing, in the interior to replace oil seal, if found in oily water and high turbidity, it must be a replacement or replacement of the seal box or the sealing ring, to ensure its good sealing performance.

6, bearing inspection: check the motor part of the upper and lower bearing, wear and tear or if the gap is too large, should be the timely replacement of the new bearings is "sick" improvise.

7, dry motor: 500 zhaooubiao measuring winding submersible sewage pump shell and the insulation resistance, if the resistance of less than 500 billion ohms, it should repel water motor.

The above is the main maintenance measures of submersible sewage pump, submersible sewage pump users before using, do the above seven points, we can protect the performance of submersible sewage pump, making it faster and better service for everyone.

Four major reasons for the shortage of the effluent from the sewage pump and the corresponding elimi

Water pump is used to exclude the city sewage, its application to city life and environmental protection has important influence, but the pump is easy to plug, plug the pump will pump once does not work, and even burning motor, resulting in poor sewage. So we have to pay enough attention to its failure, the following is to talk about the reasons for the lack of sewage pump and the elimination method:

1, sewage pump start water pump: air or gas inlet, or the bottom valve is not tightly closed, packing serious leakage, valve or door is not tightly closed.

Exclude: debris removal, replacement of damaged rubber pad, change the direction of the valve; pressing or replacement of the packing, close the valve or door; increase the amount of irrigation primer, until not until the bubble deflated plug; replace the cracked pipe; reduce the lift, the pump nozzle pressed into the water 0.5 meters.

2, start when the pump does not turn: packing too tight or between the impeller and the pump body was stuck with debris, or pump shaft, bearing, reducing the leakage ring rust live, or the pump shaft is seriously bent.

Exclude: relax fill, dredge flume; open the pump body to remove debris, rust; calibration shaft removed or replacement of the pump shaft.

3, the sewage pump heat damaged bearings: rolling bearing or bracket cover gap is too small; shaft bending or two axis misalignment; the tape is too tight; lack of oil or oil well; balance hole on the impeller blocked, the impeller out of balance, increased to side thrust.

Exclude: replacement of bearings; removal of the rear cover, installed in between the bearing bracket with adjustment; two axle shaft or adjust the concentricity; appropriate adjustable loose tape tension; add clean butter, butter for bearing gap in 60%; remove the plug hole material balance.

Less than 4, after the start of traffic: speed is not matching or belt slippage, low speed; axial flow pump blade installation angle is too small; lift; suction side; valve, pipe and impeller impeller partially plugged or pipe Water Leakage serious defect.

Exclude: adjusted the blade angle to reduce the pump installed; restore rated speed, remove grease belt, adjust belt tightness; water pump seal leakage, compression packing; plug removal and replacement of the impeller; replaced by leakage ring, plug at Water Leakage.

In the use of the sewage pump, if found no water sewage pump, may be caused by the above four reasons, we can identify the reason according to the corresponding methods for troubleshooting, so as to avoid the loss of sewage pump.

Uncover the 4 Secrets of low cost pump

In the increasingly fierce market competition, pushing the "low-priced products" companies are always trying to get the market at a low price, pump companies are no exception. Industry insiders revealed that some pump manufacturers mainly in the following 4 aspects to reduce costs:

First, save development costs, by imitation. As mentioned earlier, development costs accounted for a considerable proportion, the total cost of some imported brands in the visible, save the cost is one of the main means to reduce the cost of low-cost water pump.

Two, jerry. In the choice of motor, exhaust valve or plastic washer, the defective or simply dispense with some accessories. This will bring a direct impact on the cost of the pump.

Three, the lack of management system. Some low water pump enterprises lack of management. To reduce the cost of management, so that it can save part of the cost.

Four, workshop style production. Some low pump belongs to the family workshop production, machinery automation production level is not high, it saves the cost of equipment.

Despite the low water pump to meet the "low" demand, but low water pump brings 4 big risk can not be ignored:

First, high energy consumption. Some pump motor power is only 60 watts, the annual electricity consumption is only three hundred or four hundred yuan. But some pumps throughout the year to run electricity is up to thousands of dollars.

Two is more fault. As the core components of the boiler built-in pump, once the fault happened, the boiler will stop working or will lead to excessive noise bigualu. Low pump is also prone to long time without the card dead and other failures.

Three is short life. Some pumps can operate continuously for more than 70 thousand hours or more or more than 15 years, but the low pump is likely to malfunction, maintenance, service life is only 5 years or so.

Four is a security risk. Low water pumps are likely to occur because of a variety of failures to the system's safe and stable operation of the hidden dangers, and thus causing losses to the user.

So, how to judge the quality of a pump is good or bad?

According to the insiders, in Europe, the boiler of 24 kilowatts usually of 5 meters lift pump, boiler around 30 kilowatts usually of 6 meters lift pump, 36 kW ~40 kW bigualu usually of 7 meters lift pump. But in China, bigualu individual brand of 20 kilowatts was 6 meters lift pump configuration. "Such a high customer service, less, but the energy consumption and other issues have been ignored". Therefore, the industry calls for the heating industry should regulate the design and installation work.

Shanghai Wel pump sincerely provide conforms to the national standards of the pump for you, and promised to guarantee for one year, please choose Shanghai Wel  pump.

Mistakes in the use of centrifugal pump

 

1. Use high lift pump to pump water to low head

A lot of operators think the lower the pump lift, the less the load of motor, so they always purchase high lift pump. That’s misunderstanding. In fact, for centrifugal pump, when the model of the pump is decided, its power consumption is proportional to the actual flow of the pump. The flow of the pump will decrease when its lift accelerates. Therefore, higher lift causes smaller flow, consumes much more power, while lower lift causes larger flow, consumes much less power. In order to prevent motor overload, the actual lift of the pump at work is generally required not to be less than 60% of the calibrated lift. So when you use a high lift pump to deliver water to lower height, the motor is easy to get overload and hot or even be burned out.

If you have to do that in emergency, a valve that can adjust water flow must be installed on the water outlet pipe to reduce flow and prevent motor overload, or block the water outlet to some degree with a piece of wood or something. Note the temperature of the motor. Once it is too hot, reduce the flow in outlet or power off the pump timely. This is another that is apt to be misunderstood. Some operators may think if we block the water outlet to reduce flow, the motor load will accelerate. But in fact, all standard high power centrifugal pump drainage and irrigation machinery units have valves installed on their water outlet pipes. That’s why in order to reduce the load of the motor, they close the valve in the beginning, and then gradually open it after the motor is started.

2.Connect thin pipes to large diameter pumps

A lot of operators think the practical lift can be increased in this way. In fact, the actual pump lift = total lift - loss lift. For a certain model of pump, the total lift is fixed. The lift loss is mainly caused by resistance in the pipes. Obviously, the thinner pipe will cause stronger resistance and more loss of lift. In this way, when you use thin pipe, the actual lift of the pump will not be increased, but will be decreased. As a result, the efficiency of the pump will be decreased.  

Similarly, if you connect a wide pipe with a pump of small diameter, the actual lift of the pump will not be decreased, but be increased because the resistance of pipe is reduced and lift loss is reduced. Some operators may think if you connect a wide pipe with a pump of small diameter, the motor load will surely accelerate greatly. In their minds, when the diameter of the pipe is increased, the water in outlet pipe will generate much more pressure on impellers, so the motor will bear much more load. But in fact, the pressure of fluids is only related with lift, not with the diameter of pipe. Once the lift is fixed, and the size of impellers of the pump is fixed, whatever the diameter of the pipe is, the pressure of fluids on impellers will not change. If the pipe has larger diameter, the water in it will feel less resistance, and the flow will increase, which will consume a little more power. But as long as it is within the range of regulated lift, the pump can always work normally however the pipe diameter is increased. Besides, this can also reduce pump loss, increase pump efficiency.

Article link:  http://www.weihupumps.com/service/pump-knowledge/3.html

Well submersible pump heat the cause and the treatment method

Wells submersible pump is suitable for the extraction of groundwater from a deep well, also can be used in rivers, reservoirs, canals and other water projects: it is mainly used for farmland irrigation and plateau mountainous area with water, can also cities, factories, railways, mines, construction site water supply and drainage.Often have a net friend online consulting Wells with submersible pump motor of high temperature problem, the following is the Shanghai weihu pump industry to organize the related content.

The following is the cause of the high temperature in Wells submersible pump motor analysis:

1, Reason analysis

(1) motor power, and wide working current, calorific value is big.

(2) low fan speed, air pressure, air volume is small.

(3) the fan blade number is less, the air volume is small.

(4) motor with dust, grease, reduce the heat dissipation capacity.

(5) the well submersible pump motor bus voltage of 380 v, due to the pressure drop of the cable and the uneven distribution of load, motor actually only applied voltage 365 v, the voltage on the low side caused running current.

2, the processing method

The motor power, rotational speed is and Wells with submersible pump matching, cannot be changed.Fan installed on the motor shaft, motor speed determines the fan speed, and do not change.To increase the number of the fan blade can play a role, but after leaf number increased, dynamic balance is not easy to find, such as looking for is bad, will cause motor vibration increases.

(1) a former fan cover 40 cm long, inside with a diameter of axial flow fan with fan cover, axial flow fan motor power 850 w, the speed of 1489 r/min, voltage 380 v.To retain the original fan.The axial flow fan in power control all the way, do not set chain of axial flow fan and the main motor.Wells with submersible pump start-up start axial flow fan in time after operation, the Wells submersible pump shut down 30 min after shutdown axial flow fan, so that the main motor is fully cooling;

(2) to remove dust on the motor regularly, keep the motor heat sink clean, increase the cooling capacity;

(3) adjust gear pump in the busbar voltage is 400 v. 

3.Effect

(1) due to their high axial flow fan speed, air pressure air volume is big, greatly enhance the cooling effect, in the same environment temperature, the electrical load flow, main motor temperature dropped 12 ℃.Main motor temperature to overrun in summer.

(2) the axial flow fan can be controlled artificially, main motor after shutdown, axial flow fan can still run, fully cooling can make the main motor.

(3) the balance of 2 period of bus load distribution as far as possible, in case of a certain period of busbar voltage drop caused by overload too much.

(4) after the voltage adjustment, the diaphragm pump running current dropped to 210 a, calorific value is less.

(5) reducing the speed of the main motor insulation aging and prolong its service life. 

Above is the reason why high temperature Well submersible pump and processing method of related introduction, if you have other problems, can directly call our technical experts, experts will give professional answer.