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. 

China wholesale sewage pumps

The flow rate is proportional to the speed. It is suitable for conveying medium temperature below 80°C (up to 150°C for special requirements). Screw pump is a new type of liquid conveying machinery, which has the advantages of simple structure, safe and reliable work, convenient use and maintenance, continuous and uniform liquid discharge, and stable pressure.

The medium flows uniformly in the axial direction, the internal flow rate is low, the volume remains unchanged, and the pressure is stable, so turbulence and agitation are not generated. The speed and flow rate of the vertical single screw pump are linearly related, and the pump can determine the speed and flow rate. Each time the screw rotates, the liquid in the sealed cavity advances by a pitch.

This kind of pump has few parts, compact structure, small volume, simple maintenance, rotor and stator are the vulnerable parts of the pump, simple structure, easy to assemble and disassemble. With the continuous rotation of the screw, the liquid spirally presses from one sealed cavity to another, and extrudes the pump body.　　

Twin-screw pump-a pump in which two screws are engaged with each other to transport liquid.　　 Multi-screw pump-a pump in which multiple screws are meshed with each other to convey liquid. Its working principle is that when the motor drives the pump shaft to rotate, the screw on the one hand China wholesale sewage pumps rotates around its own axis, on the other hand it rolls along the inner surface of the bushing, thus forming a sealed chamber of the pump..　　A pump that uses the rotation of a screw to suck and discharge liquid.　　Due to the special geometric shape of the two parts, separate sealed chambers are formed. The screw pump is a single-screw transport pump

China drainage pumps manufacturers

From the perspective of pipeline installation technology, the suction pipeline requires strict sealing, and no air or water leaks, otherwise it will reduce the amount of water discharged by the centrifugal pump, or even pump water. Therefore, it is very important to do a good job of pipe connection. When the height, head and water temperature of the pipeline centrifugal pump installation site are different from the test conditions,

if the local altitude is above 300 meters or the pumped water temperature exceeds 20°C, the calculated value must be corrected. That is, the atmospheric pressure at different altitudes and the saturated steam pressure when the water temperature is higher than 20°C. In addition, there is also the resistance loss head of the suction pipe. The short pipeline layout, less fittings such as elbows, and large diameter water pipes can reduce the flow rate in the pipe.The installation of the pipeline centrifugal pump lies in the installation height of the centrifugal pump.

The installation height of China drainage pumps manufacturers the pump should be the head that allows the suction vacuum height to deduct the loss of the suction pipe, so the installation height of the pump cannot exceed the calculated value, otherwise the centrifugal pump will not be able to pump water.. The pump product manual or nameplate indicates that the suction is allowed under the premise of a standard atmospheric pressure.

installation height of a centrifugal pump refers to the vertical distance from the water surface of the water source to the center line of the centrifugal pump impeller. The vacuum height refers to the vacuum value of the water inlet section , And did not consider the loss of the water flow head after the suction pipe is equipped. However, when the water temperature is below 20°C, the saturated steam pressure is negligible

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

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. 

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