Water noise pumping unit, its reduction
Regardless of whether you are working in production or working at home, you cannot work comfortably in a noisy environment for a long time. If you are running a business, then you definitely do not want your customers to be exposed to the noise of water pumping equipment, and also to jeopardize the safety of employees.
When you buy a quiet air vodushny pump, you may notice that its description uses all sorts of terms: “ultra-quiet”, “quiet” and even “silent”, but what do they all really mean? It is easier to understand how loud this or that sound is when compared with other sources of noise. To give you an idea of this, take a look at the noise figure below:
Why are water pumps so loud?
The noise level of airborne water pumps varies on average from 40 to 92 decibels, which is a rather large range. How can one air-water pump be about twice as loud as the volume of a conversation, and the other make a deafening noise? This is due to several different factors.
Some methods of compressing air, for example using piston vodushnyh pumps, imply the presence of many moving parts that are in contact with each other and cause large friction forces. Others, such as spiral or screw water pumps, have only one or a couple of moving parts and are almost silent. Friction also plays a crucial role depending on the size and power of the machine. Almost all air pumping pumps for tires are extremely noisy, because they have a small amount of compression and they are very compact. For example, to get the necessary pressure to pump a truck tire, the tiny piston inside this water pump must move like crazy (high rpm) and, therefore, it produces a lot of noise and heat during the compression process. You may find that quieter air-water pumps are usually more expensive than their noisier counterparts.
Type of water pump drive
Another factor that plays a role in decibel output is the type of drive of the water pump. Silent water pumps, no doubt, run on electrical power, while diesel water pumps will inevitably create more noise, because they mainly use an internal combustion engine to create power to compress air.
The closer you are to an air-water pump, the louder it will be, and there may be situations when a noisy water-pump is unacceptable, for example, in a dental office. If you want to completely eliminate the effects of noise, the best way to solve the problem is to simply move the water pump further away from your work space. If you have a water pump room, install a water pump there, and pull the compressed air piping system directly to the workplace.
Reduced water pump noise
When searching for a compressed air pump, it is good to know the noise levels at which hearing protection is required, as well as noise levels that can cause immediate and permanent hearing loss. Many ordinary people do not understand that even exposure to noise at around 80 decibels, such as a loud vacuum cleaner, over a long period of time can also lead to hearing loss over time. This is especially important for workplaces where workers are in close proximity to an air-powered air pump.
Despite the lack of a standard for marking the noise level of each air pump, more and more people want to get a quieter water pump. Here is a list of qualities and models that will help you find out what to look for when you are looking for a quiet air / water pump:
Most semi-professional and industrial air pumps are now manufactured using thick steel or aluminum in the casing materials, and some companies use special sound insulating bodies. Hydraulic pads placed in a special way can also be used in air pumps to reduce vibrations and contain sound waves.
The vibrations created by the water pump can actually have a reinforcing sound effect and make the water pump work louder than it actually is. To help solve this problem, rubber pads are ideal for solving this problem and avoiding the transmission of vibrations to the floor. By introducing rubber pads and other methods of noise absorption, it is possible to achieve noise when running water pumps less than 70 decibels. This is slightly more than the noise of a normal two-person talk, and much less than 90 dB, which is enough to permanently damage your hearing.
Oil water vs oil free pump
There is a point of view that if the water pump is oil-free, then it is very noisy. This may be true, at least for garage-level piston air-water pumps, but, contrary to popular belief, there are air-water pumps that are very quiet and do not contain oil.
More and more manufacturers are using new technologies for the medical, dental and food industries, which require clean, quiet and oil-free air / water pumps. Examples of these water pumps are: screw, spiral and piston water pumps with a double piston design.
Noise of different types of air pumps
Electric-powered air-to-air pumps are quieter than those that run on liquid fuel, but there are still a huge number of types of air-driven pumps from which to choose. So, the next step is to determine the type of water pump that suits your needs.
Water piston pump
To date, the most common type of water pump is a piston water pump, compressing the air due to the reciprocating motion of the piston. Single-stage models tend to be more noisy than double-piston (also called duplex) air-driven piston air pumps. Duplex water pumps produce less noise because they produce more compressed air using fewer turns, they have tighter tolerances and they are better cooled.
Water screw pump
Screw air water pumps are much quieter than piston water pumps. They have a forced displacement compression system, which includes a pair of corresponding screws. Oil-type screw-type water pumps are more common and less expensive than oil-free models. Despite the fact that oil-free water pumps are more expensive to purchase and maintain, they far surpass oil ones in air quality and are used in the medical and food industries. The screws in such a water pump do not actually touch each other, due to which low noise is ensured. The great advantage of screw water pumps is that they can be mounted near workplaces without the need for hearing protection.
Spiral water pump
The quietest of all air vodoshnyh pumps is a spiral air vodushny pump. Spiral air / water pumps use two spiral metal parts to compress air. One part is motionless, and the other moves inside it, squeezing the air. Spiral water pumps can operate continuously and are ideal for many commercial applications, such as: medical, pharmaceutical, food, laboratory, textile, electrical and industrial equipment. Despite the fact that they are designed for smooth operation throughout the day, their only drawback is limited performance.
Ways to reduce the noise of the water pump
There are five ways to reduce noise:
- sound absorption;
- vibration isolation;
- vibration reduction;
- attenuation of the noise source.
Sound insulation is a barrier placed between the source of the noise and the receiver. This means that it is possible to isolate only part of the sound, depending on the area of the barrier, and the characteristics of the insulation. A heavy barrier is more effective than a light one.
Sound absorption occurs when the sound source is surrounded by a lightweight porous sound-absorbing material attached to the barrier. Thicker absorbing materials are more efficient than thinner ones. The standard density is about 30 kg / m3 for polyurethane foam and about 150 kg / m3 for mineral wool.
Vibration insulation is used to prevent the transmission of vibration from one part of a structure to another. A common problem is the transmission of vibration from the built-in machine to the barrier and down to the floor. Steel springs, cork, plastic and rubber are examples of materials used for vibration isolation. The choice of material and its size is determined by the oscillation frequency and the requirements for the strength of machine supports.
The vibration attenuation means is a structure equipped with an external sound attenuating surface made of an elastic material with a large hysteresis coefficient. When the sound attenuating surface has a sufficient thickness, for example, a wall, it is effectively protected from vibration and, thus, does not begin to emit noise.
The weakening of the sound source gives a small effect, but it requires little cost. In this way, it is possible to reduce the overall noise level by about 5 dB, while integration can reduce it by about 15-25 dB.
How to reduce the noise of an aquarium water pump?
Posted by admin on 07/07/2016, 09-24
There are no truly silent aquarium vodushnyh pumps, because air pumps saturate the water with oxygen due to rapid fluctuations in the rubber diaphragm. And although the air is easy to give in, the pressure created by the vibration has a slight noise, especially noticeable at night. However, there are a few rules, observing which, you can make your water pump work quieter:
Keep sprayer clean
Install a water pump above the water surface.
Place the air pump on a firm, level surface.
Place a vibration silencer under the water pump – polyethylene foam or foamed rubber
1. Keep sprayers clean
First make sure that the sprayer does not need to be replaced. To do this, lift the stone to the surface and turn off the air supply cambric, and then blow it into the hole. If it is very difficult to blow, as if the air returns to your mouth, then the sprayer is clogged and needs to be replaced.
As a rule, the life of the sprayer is a little less than one year., After all, he, of course, clogged with algae, fish waste, dirt and bacteria. Remember, if your aquarium is overpopulated with fish, quickly becomes cloudy and is not equipped with a filter, then the air stone will have to be changed more often.
A dirty sprayer creates additional resistance to the water pump, directing airflow back, so it becomes harder for the mechanism to work, and this makes it rustle even more.
2. Install a water pump above the water surface.
Removing the check valve, install the air pump above the water level, it will also reduce the pressure on the device itself and the noise from the work.
In addition, by raising the device above the water level, you ensure safety in case of an unexpected power outage or failure of the device because water often flows by gravity into the diaphragm. And then your water pump can “burn out”, and with a constant supply of water, even flood the room.
If it is not possible to install a water pump above the water level, be sure to use a check valve from a reputable manufacturer In this case, get a water pump a little more powerful. the valve creates an additional load on the air pump.
3. Place the water pump on a firm, level surface.
If the device is located in a plastic lid of the aquarium, which often resonates with the pump, the operation of the water pump will become louder. If you install the device on the cover glass of the aquarium, the effect will be the same: annoying noise will not bring you any pleasure.
It is best to place the pump on a solid, dense object that will absorb noise and make the pump almost silent. This could be a wooden furniture shelf next to the aquarium, or install a water pump remotely inside the cabinet, making sure that there are no objects or clothes piling up around the device and nothing prevents the air circulation. Do not place the water pump on the edge of the shelf or ledge where it may fall from vibration.
4. Place a vibration silencer under the water pump.
If this is not possible, then for the first time an old rubber mouse pad or even a dry sponge for washing dishes will do.
These few steps will significantly reduce not only the sound of your air pump, but also prevent its rapid breakdown. And do not forget to check all the aquarium equipment from time to time to prevent damage or burnout.
You will love your aquarium even more!
Exceptions are expensive professional sprayers like “Angel Aqua” with self-regeneration.
We use TETRA check valves, which are best replaced with new ones every year.
Text: Anastasia Novakovic, especially for nemo.by
water pump, noise at work and its reduction.
Many water pumps in the process of their use create a fairly high level of noise, which negatively affects the state of the personnel in the noise zone of the water pump. On this basis, when organizing air pumping stations, the noise of water pumps is taken into account first.
The noise of a water pump arises due to the peculiarities of its design, as well as the details of which the water pump consists of. During the operation of the water pump, the parts rotate in contact with other parts, thereby creating vibration, as a result, the water pump makes a noise.
Many enterprises today use special methods designed to reduce the noise of an air pump.
Measures to reduce water pumping noise can be divided into two groups
– first group, These are activities that are aimed at reducing the noise of the water pump itself. To reduce the noise level of the water pump, use the installation of noise-absorbing coatings, produce improvements mechanisms.
– second group, These are actions that are carried out depending on the method that was approved when the water pump was installed.
Quite often, noise insulation materials are used to reduce the noise level of a water pump. Often, to reduce the noise of a water pump, they are lined with sound-insulating panels.
The question of reducing the noise level of a refrigerator’s water pump can be decided on the basis of a place. Today you can use three options where you can install a water pump:
– in the corner between two walls
– in the center of the room
The best option to reduce the noise level of the refrigerator’s water pump is to install it in the center of the room, since only one reflective surface reduces the noise level to a minimum.
Solutions that can provide noise reduction for a refrigerator pump are available. It is necessary to choose the one that is most appropriate for a particular enterprise, and only then implement it in rooms where they face the similar problem of excessive noise of a water pump.
Excessive noise from a water piston pump may be caused by:
1. Noise during operation of water pumps due to weakening of threaded connections
It is necessary to check the density of all connections (fastening of pulleys, electric motors, special attention should be paid to checking fans).
2. Noise during the operation of water pumps due to incorrect alignment of drive sleeves and pulleys
After the water pump has been stopped, it is necessary to check the installation of the couplings and pulleys.
3. Noise during operation of water pumps due to malfunction of water pump unit
If there is such a problem, you must inform the service department.
4. Noise during the operation of water pumps due to the failure of motor bearings
It is necessary to listen to how the bearings are noisy during operation, before that you need to open the panel. In case of violation of the usual rhythm, inform the service department.
If the aerator is noisy in the aquarium and the water pump prevents sleep
There is a wide variety of aquarium water pumps and often many of them do not work silently. At the same time, the loud sound can emit either the water pump itself during operation, or bubbles bubbling on the surface of the water. The second problem is less noticeable in aquariums with a lid, since the latter is more suppressing the sound of bubbles. If the bubbles gurgle too loudly, then you can dig a sprayer into the ground a little deeper, or move it slightly in a horizontal direction and listen to what happened.
In order to hide the noise from the water pump (air blower), it is placed in pedestals, which are often sold complete with aquariums. But this is not always enough, since water pumps are very powerful and productive.
How to hide the noise of the aerator or water pump
Generally, if you do not have a cupboard under the aquarium, or some cabinet where you can remove a loud aquarium inlet pump, then the actions described below will not help you reduce noise. So, this is what can be done to reduce the noise of the aerator:
- Many install water pumps in a horizontal position, but you can try to arrange it vertically. To do this, many models have a special eyelet for which you can hang a water pump on a nail or screw.
- Under the water pump you can put some kind of soft material. For example, paralon, isoprene, or just a thick rag. This will help reduce vibration and thereby reduce noise.
- Another option is to place the water pump in a small box (made of cardboard, for example). Or you can glue a similar box of soft material, such as paralon or the same isoprene (foam). Only it should not be closed, since the water pump constantly needs access to take in fresh air so that it does not overheat.
- Well, and finally, the simplest – you can simply buy water pumps that have adjustable power. Then you can simply reduce it at any time, thereby reducing the noise level.
- Before you decide where to put the aquarium, think about positioning it not in the bedroom, then problems with a noisy water pump that prevents sleep will not arise exactly.
In general, it is necessary to constantly remember that the water pump should work constantly, and even at night, so if aeration prevents you from sleeping, then something needs to be done about it.
We share tips on how to choose an aquarium for your home, as well as details about choosing and installing an external aquarium filter!
Extraneous sounds during the operation of the air conditioner: hum, crackle, noise of the water pump
Extraneous sounds when operating the air conditioner may be regular or indicate a problem. All climatic equipment works with a certain noise level. However, the sound of the air conditioner pump may be different.
Sources of buzz
The intensity of the hum from the air conditioner depends on the following factors:
- operation mode;
- technical parameters of the equipment.
Thus, the inverter systems are quieter and extraneous noise, hum from the air conditioner, cod almost do not emit. The more powerful the model, the stronger the noise.
When operating in rapid cooling mode, the air conditioner will buzz more than in sleep mode.
The air, moving through the radiator, creates the very hum that can be more intense or weaker. This is a homogeneous sound, the power of which is determined in laboratories. Its value is indicated in the annotation to the air conditioner.
Against the background of this noise of an air conditioner pump, there are others. They are the ones who disturb the owners and sometimes signal problems. These are clicks, hissing, crackling, humming. The reasons for these sounds are varied:
- Clicks are typical for the operation of the relay that turns off and turns off the water pump, fans and other components;
- A crack in an air conditioner happens when heating or cooling plastic parts of an indoor unit. Plastic deforms and produces a quiet crash;
- Hiss can be heard during the launch of the water pump or when it is turned off. When freon changes direction, you can hear a hiss;
- The sound of flowing liquid is heard when the heat exchanger thaws or the equipment stops. It indicates the movement of the refrigerant through the pipes.
As a rule, the hum of the air conditioner of this kind does not indicate malfunctions and accompanies normal operation.
What does it mean: air conditioning works loudly?
The fact that the air conditioner is loud, we can say, if the noise level of the indoor unit exceeds 35 decibels. This is the level of conversation in a low voice and such a loudness of the air conditioner can already interfere with sleep.
Crackling from the air conditioner
A crash in the air conditioner is a reason to urgently diagnose and clean the equipment.
If a crash is found in the outdoor unit, the specialist will need to check the condition of the water pump. This is the most difficult and costly breakdown. Maybe the problem is in the garbage that prevents the external unit fan from rotating. You can clean the outdoor unit yourself if it is located in an accessible place.
But the professionals will handle the procedure better.
If you are disturbed by a crash in the air conditioner (indoor unit), you should clean the fan or the impeller. The blades could be clogged with dust. If the impeller is broken, it is changed.
Water pump noise. How to reduce. | Hydroponics
If you want to reduce the noise of the water pump, then you should put aero compensator at its outlet. The low frequency hum disappears.
Most aquarium water pumps operate on the principle of membrane oscillation. This article will not consider such methods of noise reduction as hanging a water pump with elastic bands or placing it in a soundproof box. Consider where the hum comes from.
If after reading this article, someone still has questions then you are welcome to contact us. FORUM, where you can always ask questions and we will gladly try to help you with an answer and advice.
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Noise in the car from the side of the water pump: cause and effect
There are two possible types of breakdown of the water pump, accompanied by noise effects. One of the reasons is the bearing noise of the air conditioner pump, while it will be heard when the engine is running, regardless of whether the air conditioner is on or off. Such a malfunction can lead to the fact that once there is a jamming and breakage of the drive belt. The situation can be even more aggravated if the belt is common, because then the machine can simply stop.
Another option – the noise with a crash, heard when the air conditioner. In this case, you may have to accept the fact that the service life of the air conditioner has come to an end and it is better not to exploit it in the future. Otherwise, when it finally collapses, the restoration of the entire system can be extremely expensive, since it will require disassembly, flushing from the inside, changing the oil and the water pump itself, as well as the receiver / dryer. If, however, the chips cut off from the pumping cylinders are blocked in the expansion valve, then it will also need to be replaced.
Water pump not working
First you need to understand exactly how it does not work.
So, if a click is not heard when the water pump is turned on and the coupling does not engage with the engagement and the rotor, then it’s most likely not a matter of the water pump. The most typical reason lies in the absence of gas in the system and the blocking of switching on the water pump by a pressure sensor. Electrical faults, burnt coupling winding or rotted contact are less common. Anyway, it is best to run a diagnostic.
If the clutch noise is heard when the air conditioner is turned off, it overheats and gives off a burning smell, then it is a matter of a failed clutch bearing. In this case, it is necessary to remove or trim the belt, if it is designed specifically for the water pump, and then go to the service. If the belt is common, then you should try to put a shorter belt designed for a similar model without air conditioning. In case this is not possible, you have to pull the car on the rope.
If turning on the air conditioner is accompanied by a terrible howling from under the hood, then there are two likely causes to be considered: poor belt tension or air conditioner seizure. If it’s still a matter of jamming the water pump, then sparks will fly out from under the clutch and smoke will come out, and the motor will try to stall. If there are extraneous sounds from the water pump side, you should immediately prepare for the worst when working. The fact is that a wedged water pump makes little sense to sort out, since it is unrealistic to bring him back to life.
Sometimes it happens that the water pump is quiet enough, but it does not create the necessary pressure. In this case, do not do without diagnosis.
Need a diagnosis and repair of car air conditioners? Get detailed expert advice by phone. 7 (912) 660-23-25.