When is the water pump the most noisy and why is the pump noisy?

The outlet valve is fully open and has the largest flow, the current is also large, and the noise is also large, which causes the flow to run and cause cavitation (commonly known as the water is mixed with gas), and the vibration is loud and the noise is large, the valve is closed and the current is small, and the sound of the pump is also reduced.

For example, if you hold a candle in your hand and open your mouth wide to blow air, the candle will not be extinguished and the person is tired, so you can open your mouth a little smaller and blow it out.

It's the same with water pumps.

When the pump is running, there will be noise, but you have to ask when the noise is the largest, I don't know what you want to ask this for, how to tell you, when the pump is operating normally, that is, when it is running near the rated working conditions, it is normal to have noise (or should only say that it is sound), because there should be friction between the machinery, his sound, and the maximum flow, the maximum lift has nothing to do with as long as the pump is operating normally, the sound will not change much, and the flow is the largest, when the head is the largest, the pump can also be in a stable working state.

If the pump really has abnormal sound (I guess you mean this), that is, the sound of the pump is not normal when it is running, much louder than usual, then there must be a problem with the pump, such as the pump vaporization, the pump does not pump water, the pump bearing has no oil, etc.

It should be said that it is normal for the pump to have noise, if the noise is not normal, there is a problem with the pump, I don't know what you study, what is the use of the noise level, and I hope to advise more!

Let's put it this way, the maximum noise of the pump tends to occur when the pump is vaporized, usually the flow rate is minimal and unstable when the pump is vaporized, and the head (outlet pressure) is also fluctuating.

Generally speaking, when you run away from the design working point, you will have a large abnormal noise.

Not quite sure what you mean. If the noise you are talking about is not the sound of the normal operation of the pump, please use a multimeter to measure whether the three-phase resistance of the pump motor is normal, if it is normal, check whether there are debris at the inlet of the pump, and whether the pump bearing is transported, if it is not normal, please repair or replace the pump motor.

To put it simply, the bearing has no oil, eccentricity, broken, etc.

There are many reasons for noise, and the noise of the pump is often accompanied by the vibration of the pump, and the main reason is that the bearing of the rotating shaft is short of oil or damaged, so that the noise will be generated.

The reason for the noise of the water pump, the reason for the noise of the water pump, one is the lack of oil in the bearing of the water pump, and the other is caused by the loose bearing.

There are many reasons for the occurrence of mechanical noise. It is often generated at the same time as the vibration of the pump. The internal reasons of the pump itself are mainly due to the poor rigidity of the pump body, which constitutes a sound source when cavitation of the pump occurs; Poor impeller design rigidity can also lead to the above results.

2. Aerodynamic noise is mainly caused by the rotation of the fan and rotor of the motor in the air, which is mainly related to the number of blades of the fan and the relative speed of air flow. In the case of water-cooled motors, this fan-induced noise can be eliminated.

3. Electromagnetic noise is generated by the motor. Electromagnetic vibration caused by voltage instability; The eccentric air gap of the rotor is uneven, which increases the electromagnetic noise; The motor winding is faulty, causing the magnetic field to be unbalanced, making the motor produce a low roar; The rotor of the asynchronous motor has broken bars, the motor torque is reduced, and the load current is high and low, and the noise is high and low when it occurs.

4. Hydraulic noise: The hydraulic noise of the pump is caused by hydraulic vibration, and the noise of the pump is the lowest when it runs in the highest efficiency area, which is the result of obtaining the best reasonable value of each hydraulic parameter in the hydraulic design. When deviating from the design conditions, the noise level is large and very destructive.

The company mainly produces centrifugal pumps, submersible pumps, self-priming pumps, sewage pumps, diaphragm pumps and other products.

There are many reasons why the pump has noise, there are many reasons for the noise of the water pump, mainly the following are the following, the bearing of a water pump may be damaged, and the noise is made when the water pump rotates, and the second is that the impeller of the water pump may also be sliced, resulting in uneven rotation force and can make noise.

The noise is generated by the sound source, and the pump noise is generated by the parts in the pump or the medium flowing in the pump. Want.

To reduce noise, it is necessary to carefully analyze the sound source that generates the noise and improve the structure of the sound source or the movement state of the medium. Noise production.

The main aspects of life are as follows. It is recommended to use the Four Seasons Muge system.

The noise of this pump is because the bearing of the pump is not good, that is, it must be replaced, so that the noise of the pump can be reduced, because only the bearing can be replaced.

A water pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy or other external energy of the prime mover to the liquid, so that the liquid energy increases, and is mainly used to transport liquids including water, oil, acid and alkali, emulsion, suspension emulsion and liquid metal.

Hello, it could be hydraulic noise, or it could be electromagnetic or pneumatic.

When there is a problem with the vacuum pump, it can be tested by itself according to the manufacturer's opinion, and if it still cannot be solved, it may need to be repaired in the factory. As a well-known vacuum pump manufacturer, Busch Vacuum can provide a full set of after-sales service, including standardized maintenance, service maintenance contracts, exchange services, etc., and can arrange professional technicians to come to your door to solve problems when the problem is still not solved. If you feel that the above is not detailed enough, you can consult Busch Vacuum Equipment International ** (Shanghai)****.

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The reasons for the high noise of the water pump may be due to the following aspects:

1.Problems with the design and manufacture of the pump itself. The pressure, flow, speed and other parameters of some pumps are unreasonable, resulting in large vibration and noise of the pump.

2.The location and way of installing the water pump are unreasonable. The water pump is easy to produce vibration and noise when it is installed on the ground or when the foundation is not firm, and attention should be paid to selecting the appropriate position and method when installing.

3.The operating state of the water pump is unstable. The unstable situation of the pump during operation, such as uneven flow and unstable pressure, can easily lead to increased vibration and noise of the pump.

4.Pipes and valves are not properly designed. Improper design of the pipes and valves of the water pump, such as too long pipes, too many bends, unreasonable valve openings, etc., will affect the working efficiency of the water pump and increase vibration and noise.

5.The maintenance of the water pump is not in place. The long-term use of the water pump is prone to wear and aging, such as bearing wear, seal aging, etc., which will lead to the unstable operation of the pump and the increase of noise.

In response to these problems, the following measures can be taken to reduce pump noise:

1.Optimize the pump design and manufacturing process to ensure that the parameters of the pump are reasonable.

2.Install the water pump reasonably, and take vibration reduction measures, such as installing vibration reduction pads, vibration reduction brackets, etc.

3.Strengthen the maintenance of water pumps, regularly inspect and replace bearings, seals and other wearing parts.

4.Optimize the design of pipes and valves, reduce the resistance and pressure fluctuations of the pump, and reduce the vibration and noise of the pump.

5.Reasonable control measures, such as reducing the running time of the pump, reducing the operating speed, etc., to limit the generation and spread of noise.

1. Rotor wear.

Rotor wear is one of the main factors that cause the pump to be noisy, when the pump is used for a long time, the heat generated by friction will be generated, and in the long run, the rotor surface will begin to wear, resulting in more and more noise.

2. Bearing wear.

The bearing of the water pump is also one of the reasons for the noise of the water pump, which will cause the bearing to wear out for a long time, and will also cause the water pump to make a loud noise.

3. Improper installation.

The installation of the water pump is also one of the reasons for the noise of the water pump, the installation of the water pump does not comply with the regulations or is not smooth, which will cause the water pump to be unbalanced when working and make a loud noise.

Second, the solution.

In view of the above reasons, the following provides several effective solutions to help you solve the problem of high noise of water pumps.

1. Replace the bearing.

Serious bearing wear is one of the main reasons for the noise of the water pump, at this time the bearing needs to be replaced, it is recommended to choose the best bearing, pay attention to the installation position of the bearing cover during installation, to ensure that the pump is stable in operation.

2. Replace the rotor.

Wear and tear of the rotor is one of the main causes of high noise in water pumps, and the noise problem can be solved by replacing the rotor. It is recommended to choose a rotor suitable for your own water pump, and pay attention to the angle and size matching of the rotor during installation to ensure the smooth operation of the water pump.

3. Install the water pump correctly.

Proper installation of the pump is also one of the important ways to solve the problem of high noise of the pump. First of all, confirm the installation position and installation direction of the water pump to ensure that the installation position is stable and does not shake. The foundation of the water pump should be firm, and the gasket should be matched with the water pump to prevent the water pump from shaking when working.

The solution to the high noise of the pump room

1.Renovation of the pump house.

Many pump rooms are reinforced concrete structures, the sound absorption coefficient is low, and the noise pollution in the pump room is serious, so we need to install sound absorption panels on the walls of the pump room, and absorb sound at the same time to reduce the reverberation in the room. In addition, the doors and windows of the pump room were also replaced with soundproof doors and windows with sound insulation function.

2.The external exit of the pump room is soundproofed and silenced.

Including doors and windows, air intakes, and exhaust outlets. The position of the air inlet and exhaust outlet can be muffled by installing mufflers or muffler louvers and other devices according to the situation.

3.Sound insulation and vibration reduction of water pump pipes.

In order to avoid the propagation of pump vibrations through the pipes, soft connections are required. Vibration damping is required at the point where the pump pipe penetrates the wall by filling it with a vibration damping pad or other elastic damping material. In addition, the pipe support and hanger are replaced with elastic ones to avoid the transmission of pipeline vibration.

4.Solve the vibration of the pump unit.

A common method is to install a pump damper at the bottom of the pump support base, so that the vibration of the pump unit cannot be transmitted through the ground below.

5.Add shock absorbers to the water pump.

The noise of the pump is partly caused by vibration, and partly due to its own reasons, so it can only be treated with external sound insulation.

1. The building structure in the pump room is renovated, and the sound insulation panels are installed around the walls and the top of the machine room and fixed with light steel keels; The communication holes between the computer room and other rooms are tightly blocked to avoid air sound; Ensure the airtightness of the doors and windows of the computer room.

2. The water pump is added with a soundproof cover, and an exhaust fan is added in the cover to ensure the ventilation of the equipment, and at the same time, the noise insulation cover inlet and exhaust port are equipped with silencing equipment.

3. Install a vibration isolation platform at the bottom of the pump to do basic vibration reduction treatment to isolate the vibration source generated when the pump is working, and at the same time, the supporting pipes in the pump room should do a good job of vibration isolation elastic support and hanger and soft connection to minimize noise transmission.

First of all, it is necessary to determine the source of the sound from the source, so as to solve it fundamentally. Although only the pump is working in the pump room, it is divided into pump vibration and system pipe network vibration. The water pump is divided into the pump motor vibrating or the pump itself vibrating.

The motor vibration is divided into whether the vibration caused by the abnormal noise of the bearing is large or the vibration caused by the deviation of the shaft alignment. The large vibration of the water pump is divided into uneven flow rate caused by insufficient water inlet of the water pump. It is also ...... such as large vibration caused by foreign bodies in the pump cavityThe network management resonance generated at each elbow corner, or the pipe network during the ascent process, etc

<> "How to reduce noise when the pump is loud."

1. Use a water pump sound insulation cover.

A sound shield can be installed on the pump to isolate the sound from the pump and prevent it from coming out.

2. Carry out vibration reduction of water pump.

A vibration damping device can be installed under the pump to reduce the vibration of the pump, and elastic support can be done in the pipes and inlet and outlet pipes of the pump to reduce noise transmission.

3. Install an exhaust fan.

An exhaust fan can be installed in the machine room, and the exhaust fan should be equipped with a muffler, which can reduce the noise and slide effect.

What is the cause of the noise of the water pump.

1. It is usually caused by mechanical noise, when the machinery in the pump room is running, it will produce noise, therefore, it will cause the pump to also have noise. Moreover, the rigidity of the pump is not good, and the internal impeller is easy to fall off, so when it is running, it will cause a large noise in the pump.

2. In addition to mechanical noise, there is also a reason for the pump itself, its base design is unreasonable, or the base is filled with concrete, and there is a hollow drum problem. Therefore, when the water pump is working, it will vibrate and produce noise.

3. There may also be aerodynamic noise, the fan inside the pump is rotating with the air, so there will be some noise in the blades of the fan. Therefore, when this situation occurs, Jue Tansong should do a good job of windshield treatment at any time, so as not to have too much wind in the air and drive the water pump to produce noise.

4. When the hydraulic vibration occurs, it will also cause the noise of the water pump, so when using the water pump, the internal hydraulic power should be controlled as much as possible to prevent the noise of the water pump and affect the living of the users downstairs.

The main purpose of the pump is to transport water or liquid, and it is widely used in agriculture, industry and domestic water. When the pump is running, there will be a certain amount of noise, so what is the reason for the loud pump? Let's take a look.

1. It may be that the electrical imbalance or magnetic force in the motor of the water pump is uneven, for example, the working motor is not the same because the core position of the stator and rotor magnetic force is different, or the air gap difference in each direction is higher than the deviation range.

2. It may also be due to the poor quality of the rotating position of the motor and the pump, resulting in asymmetrical axis or improper installation of the unit.

What are the precautions for the use of water pumps.

1. First of all, the water pipe should be absolutely sealed, and it is necessary to check whether the connection position between the pump and each water pipe is loose before operation. It is also necessary to lubricate the bearing body frequently to facilitate the observation of the oil level. If it is an oil-immersed water pump, the oil should be changed once after 500 hours of operation, and the oil in the motor cavity also needs to be changed.

2. Check whether the valves of each outlet pipeline of the pump are closed in time, and see if there is any error in the pressure. When starting the motor, you should see if there is any error in steering, and after operation, you should open the pressure gauge, and if the pressure is suitable, then slowly open the gate valve. In addition, it is necessary to check whether the motor of the water pump is overloaded.

3. The flow rate of the pump should be guaranteed to be within the normal range, so as to ensure that the pump can operate with maximum efficiency, so as to achieve the effect of energy saving. When the pump is working, the ambient temperature of the bearing should not exceed 35 degrees Celsius, and the maximum temperature should not exceed 80 degrees Celsius. If the sound of the pump is found to be abnormal, it should be stopped immediately and repaired.