China wholesale deep well borehole pumps

Diaphragm pump is also known as control pump in the industry. It is the main type of actuator. Diaphragm pump is a device that changes fluid flow by receiving the control signal output by the modulation unit and using power operation. It is generally composed of actuators and valves. Its power source is: compressed air, which can absorb all kinds of corrosive liquids, liquids with particles, high viscosity, volatile, flammable, and highly toxic liquids.

It is a kind of equipment with strong practicability and operability. It is easier for the diaphragm pump to be unable to beat the pressure during its work. Next, the main reason for this situation will be analyzed. Diaphragm pump can't hit the pressure analysis: 1. The stroke regulator of the pump is damaged, resulting in useless work. 2. The check valve at the inlet and outlet of the pump is not well sealed. 3.

The outlet pressure is too high, causing the pump to hold back pressure. 4. The inlet filter is blocked. 5. Too little hydraulic oil in the pump. 6. If the pump is provided with a crossover at the inlet and outlet, whether the hand valve is not closed tightly. 7. The outlet pipeline is blocked. When the diaphragm pump is working, when the metering pump just starts to work, the volume is relatively small. Only a stream of rhythmic liquid flowing out of the vent valve at the pump outlet indicates that the pump is good.

These are to ensure China wholesale deep well borehole pumps body is filled with liquid. When the centrifugal pump is started, if there is no filling in the pump or the filling is not full, there will be Air, due to the low density of air, the centrifugal force generated after rotation is small, so that the low pressure formed in the center of the impeller is not enough to suck the liquid in the storage tank into the pump. Even if the centrifugal pump is started, the liquid cannot be delivered. 

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China wholesale sewage pumps

In addition, China wholesale sewage pumps, use a small displacement to pump water first when starting the pump, so that the main line pressure rises slowly, and pressure fluctuations can also be reduced. Mainly because of the different sizes of balls, poor hardness, large clearance, etc.

If the bearing gap is too large, it is easy to loosen the shaft, so the bearing gap should be adjusted in time. Points to note during maintenance In the process of maintenance, you should strictly follow the regulations and pay attention to the following points.

The air bag is easy to form during operation, which causes the pipeline pressure to fluctuate. Bearing 'running to the outer edge' Due to the poor assembly quality of the bearing, after a long time operation of the pump, the bearing 'running to the outer edge' phenomenon will occur, causing the temperature of the bearing to rise, noise and rotation. Bearing problems 1. The more the number of replacements, the larger the hole, resulting in failure to tighten.

There should be no more than 3 gaskets in one place, otherwise it is difficult to ensure the smooth operation of the pump. Second, the rubber ring, plum rubber, etc. The solution is: (1) Weld the bearing bracket with a layer of metal, then turn it to a suitable size, and reassemble; (2) If the bearing gap is large, thin the copper skin can be used to make the static fit of the bearing outer edge meet the requirements value. 3. In order to eliminate this phenomenon, a negative pressure gauge is installed at the inlet of the pump to observe the negative pressure changes at any time, so as to accurately determine the changes in the suction pipeline and clean the bottom valve and filter in time.

The solution is to fix the pump first, then align it, then cut off the flanges on the inlet and outlet pipes, make them align with the flanges on the pump body, install the connecting bolts and tighten them, and then connect the inlet and outlet pipes Connect with the flange. Therefore, if the bearing is found to be abnormal, it should be stopped and replaced in time. When the pump is running, the fluid passage is not smooth, resulting in hydraulic shock and vibration of the pump. Even if the air is discharged completely when the pump is turned on, it is difficult to clean it. 2. 

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China wholesale deep well borehole pumps

a small exhaust pipe and valve should be added to the outlet of the pump. If the temperature of the liquid in the pump is too high to cause difficulty in self-priming, you can temporarily stop it, and use the liquid in the spit line to flow back into the pump or directly replenish the liquid into the pump at the liquid filling port on the pump body. This will not only facilitate the discharge of gas from the outlet during the self-priming process, but also ensure that the pump is lighter. 5.

The installation height of the suction inlet should not exceed 5. Prevent the suction of solids and other impurities in the pump body. Check whether the nuts of the pump body bottom and each connection are loose. Check after 3-4 hours of actual operation of the unit. 7. This will help shorten the self-priming time and improve the self-priming function.

When the inlet pipeline is blocked, it should be eliminated in time; when the suction lift is too high, the pump installation height can be appropriately reduced. If it is insufficient, you can directly inject the storage liquid into the pump body from the liquid filling port on the pump casing. When the pump enters the normal infusion operation, that is, the self-priming process, special attention should be paid to the rise of water temperature in the pump. The valves and flanges in the suction pipe should be strictly prevented from leaking air and liquid, that is, no air leakage is allowed in the suction pipe. 2.

The pump China wholesale deep well borehole pumps must be fastened with a nut, and the nut must be tightened to prevent the nut from loosening, otherwise it will easily cause the impeller to move and cause mechanical failure. Use of self-priming pump 1.1 mm. Preparation and inspection work before starting: 1.2020-03-23The installation of the self-priming pump uses the installation of the self-priming pump 1. This series of self-priming pumps are lubricated with calcium butter and No

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Submersible Sewage Pumps Manufacturers

Long-term overload operation of the engine and late fuel supply time, etc.2020-03-30The electric diaphragm pump is driven by a cycloid pinwheel reducer, and the double diaphragm is driven to reciprocate through the crankshaft slider mechanism, so that the volume of the working chamber changes alternately so as to continuously suck and discharge the liquid. After zui, check whether the exhaust valve of the radiator cover is invalid.

The electric diaphragm pump cannot start or moves slowly. 1. Suddenly high water temperature. At this time, pay Submersible Sewage Pumps Manufacturers attention to check whether the plane of the body and the joint surface of the cylinder head are seriously warped and deformed. If the liquid delivered does not match the material of the valve ball. If it is normal, check whether the radiator outlet pipe is collapsed, whether the inner hole is delamination and blockage, find out the cause and eliminate it.　　 If it is not the problem of cooling water leakage, the failure should be analyzed and eliminated in two cases. If it is not for the above reasons, it may be that the cooling system has too much scale and the water channel is not smooth. The thermostat is damaged in the closed position of the main valve; 　　

8. Please replace it with a new product. The water pump is damaged, the fan blades are reversed or deformed, and the wind ring is damaged; 　　7. The radiator guard net or the radiator core air passage is blocked by debris, resulting in poor heat dissipation; 　　5. 1. DBY stainless steel The electric diaphragm pump is suitable for low pressure, that is, where the outlet pressure is ;3kgf/cm2. Check the spindle and 'O' ring for scratches, abrasions and flattening marks, and replace them if they are damaged.

Please check whether the diaphragm is broken. If the thermostat is normal, it means that the diaphragm pump is damaged, and the water pump should be checked and repaired carefully. If the air volume is insufficient, the angle of the fan blades should be adjusted, and the blade head should be bent or changed. 3. For the phenomenon of excessively high temperature that does not appear suddenly, increase the engine speed to observe whether the water filler is turning over, and at the same time, pay attention to whether it is a large amount or a small amount. 

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China Deep Well Pumps Manufacturers

The intersection of the pump characteristic curve Q-H and the pipeline characteristic curve Q;h is the limit operating point of the pump when the valve is fully opened. Frequency conversion speed regulation The deviation of the working condition point from the high-efficiency zone is the basic condition for the pump to need speed regulation.

2. This method is easy to operate, continuous in flow, and can be adjusted between flow and zero at will, and no additional investment is required, and it is applicable to a wide range of occasions. When the valve is fully closed, it is equivalent to infinite resistance and zero flow.

Obviously, compared with valve throttling, the energy saving effect of frequency conversion speed regulation is very prominent, and the working efficiency of horizontal multistage centrifugal pumps is higher. When the valve is closed, the local resistance of the pipeline increases, the pump operating point moves to the left, and the corresponding flow decreases. It can be seen that when the valve is closed to control the flow, the water supply capacity of the multi-stage centrifugal pump itself remains unchanged, the head characteristics remain unchanged, and the pipe resistance characteristics will change with the change of the valve opening. At this time, the pipeline characteristic curve coincides with the ordinate. , Thereby eliminating the destructive water hammer effect to a large extent, greatly extending the life of the pump and piping system..

The simple way to change the flow rate of a centrifugal pump by valve throttling is to adjust the opening of the pump outlet valve, while the speed of the horizontal multistage centrifugal pump remains unchanged (generally the rated speed), which is essentially to change the pipeline characteristics The position of the curve changes the working point China Deep Well Pumps Manufacturers of the pump. When the rotation speed of the multistage centrifugal pump changes, the valve opening remains unchanged, the pipeline system characteristics remain unchanged, and the water supply capacity and head characteristics change accordingly

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