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Category: Vacuum Pump

The Many Uses of a Vacuum Pump

Even if we don’t notice their presence in our daily lives, vacuum pumps have been around for over three hundred years dating back to its invention in 1650 by Otto von Guericke.

Really?

There are many kinds but they can be categorized into 3 groups according to the way they function:

  • Momentum transfer: generally use high speed blades to suck air or gas from a particular space.
  • Entrapment : is a technique used to capture gases
  • Positive Displacement:  is based on expanding a cavity in order to make a specific gas enter and once it has, sealing the cavity and releasing the gas into another space (generally the atmosphere).

But Where Are They?

There are many uses to vacuum pumps specifically when it comes to industrial and scientific research processes ranging from simple milking machines to hard core science such as fusion research, uranium enrichment or the development of electron microscopy.

But in fact, they are a part of our daily lives even if we can’t actually see them. For example, did you know that the hydraulic brakes of your car work with this mechanism? Other motor functions like the cruise control or the door locks also have vacuum based functionalities.

Benefits of a Vacuum Pump on an Engine

Generally, a vacuum pump will only be of benefit for an engine that creates a significant amount of air or gas due to its high performance, by adding some horse power and increasing the life of the engine.

By putting a negative pressure on the machinery, it will reverse problems caused by the increase of pressure in the pan that pushes oil entrained in the air past the rings on the intake’s stroke and the valve guides

Other Functions

As we mentioned before, there are many kinds and the weapon of choice will vary according to wants to be accomplished: perhaps you would like a dry-running radial pump, or on the other end of the spectrum an oil-lubricated screw pump. Whether you are replacing an old part of a system or replacing the whole system itself the deciding argument generally boils down to energy conservation or low noise emission.

 

Vacuum Pump – Uses and Care

The vacuum pump and hydraulic pump are some of the many inventions that have a huge impact on the lives of human beings. The vacuum pump, in particular,  is a product of some of the most brilliant minds in the world. Vacuum pumps have a number of important uses, which are not only limited to the household setting, but they are valuable for industrial applications as well.

 

Uses of Vacuum Pumps

Vacuum pumps can provide you with a multitude of services. They are essential in the processing of composite plastic molding and used in checking the flight instruments in simpler and older aircrafts. They are also utilized in the production of vacuum tubes, electric lamps and CRTs when they are refilled or evacuated with a specific gas. Vacuum pumps are also useful for vacuum coating on metals, plastics and glass for decoration. They are also used in Radio-surgery, Radio-pharmacy, Radiotherapy and other critical medical treatments. These are only some among the many uses of vacuum pumps.

 

Care and Maintenance

Vacuum pumps are very efficient tools, but they can also malfunction and fail to perform its functions because of exhaustion of minor particle damage. This is something that you wouldn’t want to happen. Vacuum pumps are useful to you only when it’s in a good condition. Its condition can easily be maintained by simple greasing and conditioning a few times a year.

 

Repair

In the unfortunate times when your vacuum pump fails, be sure that you know what to do or where to go. Most of the reputable companies selling vacuum appliances offer maintenance and repair services when you purchase one. If you have done so, then you merely have to set-up an appointment with their repair center. Another option is to go to a trustworthy repair company and have them handle the job. The most important thing to keep in mind when your tool needs to be repaired is that it has to be done by a professional. Inexperienced companies or individuals will only do more harm than good. You man need to shell out a few more bucks for the professional service, but this is a better choice than messing up with your tool.

 

Hydraulic Pumps: Types and Operating Specifications

How do hydraulic pumps work? Well, hydraulic pumps are capable of rotating and moving like a motor, and they use that rotation to move hydraulic fluid. Their power is generally brought in from outside mechanical sources. Looking for the best tools like vacuum pumps and hydraulic pumps entails looking into their manner of operation and their features — so let’s do that.

 

How Are Pumps Categorized?

Hydraulic pumps are grouped into subcategories, basing on their type and operating specifications. The types can be external or internal or a vane, or it can be a radial or an axial piston. Operating specifications include operating speed, temperature, horsepower, maximum and continuing operating pressures. It can also be pump weight, viscosity and maximum fluid flow. Let me elaborate more on the operating specifications and types of hydraulic pumps.

 

Types Of Hydraulic Pumps

The axial piston type makes use of axially-mounted piston, which is an important part when pressurizing fluid. This process takes place after the mechanical energy is used to operate the piston. The piston travels through the pump chambers and takes charge of pressurizing the fluid.

The radial piston type uses radially-mounted pistons. It may utilize an alternate motor to operate several pistons. A power source is needed to put the pistons to action and pressurize the fluid.

The other types of pumps are self explanatory. For example, the internal gear pump, from the name itself, uses internal gears, while the external gear pump obviously makes use of external gears. Likewise, the vane pump uses the vane in the process.

 

Operating Specifications Of Hydraulic Pumps

The proper functioning of the pump relies on the continuous operating pressure of the hydraulic pumps. On the other hand, the maximum amount of pressure can also provide intermittent pressure to the outlet. As mentioned earlier, as well as horsepower and temperature.

The pump’s operating speed refers to the number of revolutions it makes per minute, or it may refer to the number of  rotations of the moving parts. The horse power is measured depending on the flow and pressure of the fluid. Another important specification is the temperature, which indicates the temperature conditions that the pump can withstand.

Important Facts About Conveyor Belt Cleaners

There have been so many tools and machines invented to make people’s lives easier and so much better. The hydraulic pump and vacuum pump are a few examples. Another brilliant invention has also been achieved in conveyor belt cleaners. Cleaning and sanitizing conveyor belts can be complicated. However, a good conveyor belt cleaner can anitizes, cleans and dries conveyor belts without the use of chemicals. It uses a breakthrough industrial solution system that involves a portable sanitizing system and deep steam cleaning for conveyors even during production. It leaves conveyor belts free from contaminants and microorganisms. It is a 100 % organic, completely green technology.  

 

Conveyor Belt Cleaning System Features

This conveyor belt cleaner is easier to use and much faster than the traditional conveyor belt cleaning systems. It also works efficiently on most conveyor styles and sizes. And, since it’s easy to install, the cleaning process is quick and easy.  It is designed to give 24/7 sanitizing and cleaning power and cut water use by producing 94% of dry stream, which requires only 15 liters of water per hour. The heat it produces is enough to release soils and kill germs instantly. The Conveyor Belt Cleaning System uses a electronic control box to regulate the steam, and it can be mounted on the steam generator or the conveyor.
How It Works

Who would have thought that sanitizing can be possible in a responsible and environmentally friendly way?  With only 15 liters or water per hour, heated under pressure to maximum temperature until it turns to dry steam vapor, the conveyor belt cleaner becomes a very powerful cleaning machine. In fact, this is the only technology out there, that can powerfully penetrate a stainless steel’s micropores. Dry steam vapor particles penetrate all cracks and crevices to remove stubborn dirt, grease, and kill bacteria and microorganisms at once. This cleaning system leaves belt conveyors clean, sanitized and dry while they are operating or not. What’s more is that, it is a patented technology that cleans meshes, metals, plastics, or flat industrial conveyor belts, such as pharmaceuticals and food processing.

Conveyor belts used for these purposes require hygienic cleaning. In conclusion, the Conveyor Belt Cleaning System has several major advantages. It cleans and sanitizes in an organic way, without using harmful chemicals. It also saves costs on water usage and prevents loss of profit from labor shutdown since it can clean the conveyor belt even while it’s running.

Finding the Best Company to Fix and Maintain Vacuum Pump Systems

It is vital to the efficient and trouble free running of your production process to have your vacuum pump system regularly serviced so that any problems can be picked up before a part fails or efficiency is impacted. These devices work on the same principle as hydraulic pumps and have very tight tolerances and precision seals that can be easily damaged if maintenance is not kept up.

The Right Team
The need for specific parts make it vital that the company you choose has the experienced personnel that know the vacuum pump system you are using and which parts are most prone to failure or degradation. This can save a fortune in repair costs and down time by completely understanding the right preventative maintenance requirements so that early signs of wear or failure are picked up and dealt with before they become a problem.

Parts Availability
Generally pump systems are expensive and have a long lifetime when maintained properly. If your maintenance company has a large stock of vacuum and hydraulic pump parts then going forward you can be certain that you will have the parts on hand quickly if a problem develops or an unexpected failure happens.

Service Levels
Any vital piece equipment needs fast and efficient service and the company you select needs to have the resources to respond quickly when you need them. If you have to shut down operations for maintenance then punctuality and the ability to work out of standard hours can be vital. If you operate around the clock then it is important to have a company that has personnel available any time you have a problem.

Upgrades, Refurbishments and Repairs
The complexity and tight tolerances of vacuum pumps mean that a major failure or refurbishment will need to be done in the workshop. Does the company have the ability to exchange pumps, upgrade to newer models or to refurbish the current pumps and have them back in service quickly? These are important questions that will be vital down the track and are important to know so that when you need these major works you can plan accordingly.

Choosing the Right Maintenance for Your Vacuum Pumps and Hydraulic Pumps

Both vacuum and hydraulic pumps see tons of applications in residences and within various industries. But, to keep them working optimally, they need to be cared for and serviced regularly. This helps catch kinks in the system quicker and find ways to keep the system working better, longer. Of course, many pumps are covered by warranties but they are only covered for a limited time. Beyond that time, it is your responsibility to get regular service for your pumps to keep them working optimally. Of course, you could do this yourself if you are certified and comfortable doing regular maintenance. But, what if you are not? How do you choose a reliable company to maintain and repair your pumps? Here are a few tips on choosing the right people for the job:

  • The Team: Every company has its own dedicated team of members who maintain and repair hydraulic and vacuum pumps. And this is great. But, make sure that somewhere in this team are also engineers, preferably mechanical engineers, whose job it would be to know the product inside out. Engineers are often more insightful of the problems a pump would have owing to their knowledge of the device.
  • Finding a Spare: An established inventory is important for any good service/repair company. Make sure the company you choose has a wide inventory of spare parts so they can get them to you at any time. This can be essential if your hydraulic pump or vacuum pump is being used for essential services like delivering water.
  • Quick Response: If you are choosing a repair/maintenance company, you want to be sure that they respond to their clients in a timely manner. Tardy response times are a flag for you to drop the company. You want to be able to get quick service, especially, again, if your pump is being used for something essential. Also, be sure they are good with timelines.

With these three tips, you are sure to find an appropriate company for the maintenance and repair of your vacuum pump or hydraulic pump. Remember, though, that references are important and try looking for services that were referred to you.

Keeping Contaminants Out of Your Vacuum Pumps

Vacuum pumps take in any and all contaminants that come in from the pump inlet. There are four relevant forms of contaminant:

  • Vapors
  • Liquids
  • Solids
  • Biological Agents

Vapors
There are some vapors that can pass through a vacuum pump without harming it; all others should be passed through a condenser to convert from vapor form into liquid, and then drained off before they can make it into the pump. That’s because even small quantities of vapor can take up large volumes, distorting the effects of a vacuum pump or air compressor.

If the pump casing fills with vapor, it can condense inside the pump, which can overload the motor and damage the pump. Also, if the vapors condense within the water ring, the vapor pressure of the water seal will rise, which can encourage cavitation.

A good recommendation is that a ‘cold wall’ condenser be put in line before the liquid separator (see below) unless the vacuum pump uses a steam ejector to produce the vacuum, in which case no condenser is needed except where extreme efficiency is mandated.

Liquids
Liquid condensing inside the vacuum pipeline — or worse yet, in the pump itself — can require a complete disassembly of the pump. Depending on the kind of water suspended in the vacuum stream, different tools may be necessary:

    A water trap or knockout pot for visible ‘slugs’ of water and suspended aerosols

  • Or a cyclonic separator for water vapors and other particles that are not particularly heavier than the air itself.

Either one of these should be installed after the condenser but prior to the vacuum pump intake.

Solids
Solid particles are filtered out with exactly that — filters. Filters come in paper, hydrophobic, synthetic fiber, fiberglass, metal mesh, or other more exotic types, but they all have the same basic purpose: to let air through while keeping solid particles suspended in the air trapped in the filter. Most industrial purposes require either high-efficiency particulate air (HEPA) or ultra-low penetration air (ULPA) filters. Such filters should be installed prior to the condenser.

Biological Agents
In most cases, a HEPA filter will take care of 99.9% of biological agents. Even given that fact, every wet vacuum pump should be configured in such a way that it can be quickly and safely sanitized — and it should be sanitized regularly, at least twice a year, even if no sign of biological contamination has been noted.

Vacuum Pumps: Wet vs. Dry

Vacuum pumps come in two basic varieties: the ‘wet’ kind, which is essentially a hydraulic pump, and the pneumatic, ‘dry’ variety. Both are used to create suction, which is imparted onto a dynamic substance in order to ‘pull’ more of that substance from the far end of a tube — and generally, to use that same substance in order to perform some sort of work at the tube’s far end. So what’s the difference between wet and dry vacuum pumps? Quite a bit, actually.

Compressibility
Perhaps the most obvious difference between using fluid vs. gas to do work is that gas can be compressed — fluid does not compress. On the one hand, that means that when a hydraulic vacuum pump moves X amount of fluid on this end, there’s an immediate and corresponding movement of X distance on the other side of the system, whereas a pneumatic system is going to have a bit of a delay, and the movement isn’t going to be as precise.

On the other hand, that very give that makes pneumatics less precise can be a lifesaver. If you have, for example, a heavy load and it needs to be brought gently to the ground, a pneumatic system’s ability to dynamically respond via the compression of the pneumatic gas makes that level of delicacy much easier.

Elasticity
Similarly, hydraulic fluid is nonelastic — it doesn’t attempt to ‘snap back’ to a standard pressure if it gets compressed or thinned out. The air in a pneumatic system is elastic, and that elasticity contributes, again, to a pneumatic system’s ability to dynamically respond to changes in the load.

Flow Rate
Because gas flows much more quickly than fluid through the same amount of space, pneumatic systems are snappy and quick compared to hydraulic systems. ‘Dry’ vacuum pumps can move enormous volumes of air in the same span that a ‘wet’ vacuum pump can move only a modest amount of hydraulic fluid.

Pneumatic pumps, then, are good for moving things quickly and dynamically — hydraulic pumps are better for precision movements that involve extremely large loads. Thus, for example, jackhammers tend toward pneumatics whereas backhoes tend toward hydraulics.

Hydraulic Pumps: Fixed vs. Variable Displacement

A hydraulic drive system uses a pressurized fluid to deliver force to distant machinery. Each system has several common components; the most universal is the hydraulic pump. The pump’s purpose is to pressurize the hydraulic fluid so that it will travel down the line and perform work on the other side. In an ‘open loop’ system, the fluid is drawn from a reserve tank, and deposited into the same tank after it has done its work. In a ‘closed loop’ system, the fluid is brought directly back to the hydraulic pump after passing through a hydraulic filter.

Fixed Displacement Pumps
A fixed-displacement pump has a set flow rate — every stroke of the motor moves the same amount of fluid. Fixed-displacement pumps are

  • Simple
  • Relatively inexpensive
  • Easier to maintain

The simplest type of fixed-displacement pump is the gear pump, in which the hydraulic fluid is pushed by rotating gears. In some models, the gears are sequential; in the quieter and more efficient version, the gears are interlocking. Another common variation is the screw pump, which uses the classic Archimedes screw, which looks much like a drill bit, to move the fluid. They have the advantage of providing a high rate of flow at relatively low pressures.

Variable Displacement Pumps
In a variable-displacement pump, the flow rate and outlet pressure can be changed as the pump operates. This results in pumps that are

  • More complex
  • More expensive
  • Capable of doing a wider variety of jobs

The most common type of variable-displacement pump is the rotary vane pump, which is a variation of the gear pump in which the ‘gear’ is offset and the ‘cogs’ aren’t fixed, but rather extend and retract as the gear turns, allowing the pump to increase the pressure of the fluid by compacting it as it pushes the fluid through. The top-tier pumps, however, are bent-axis piston-and-cylinder pumps, much like the ones that are used in an internal combustion engine.

Simple, fixed-displacement pumps are perfect for single jobs that need to be repeated indefinitely over long periods of time; variable-displacement pumps can be used to power a wider variety of tools, but require more expense and more attention.

Vacuum Pumps vs. Air Compressors: What’s the Difference?

In theory at least, vacuum pumps are ‘merely’ air compressors run backwards — with the inlet attached to a machine you want to apply vacuum to and the outlet open to the air. In fact, for smaller, at-home uses, an air compressor and a vacuum pump are literally the same machine, you just decide which end you want to use and attach whatever your attaching to the appropriate end.

In industrial uses, however — in sizes that affect entire machining plants or other large-scale operations — the machines differ in small ways that enhance the efficiency of one operation over the other. And only very specifically-made machines should be used as both a vacuum generator and a compressor at the same time; the doubled load will run any machine not carefully built to withstand it.

There are three things you need to know about a vacuum pump: the strength of the vacuum it can produce, the rate at which it moves air, and the amount and quality of electricity it takes to use.

Vacuum Strength
Vacuum strength is measured in absolute pressure (mmHg), where the smaller the number, the power powerful the vacuum. Standard atmospheric pressure is 760 mmHg at sea level, so anything less than that is a form of vacuum. Most large pumps are rated once, for continuous-duty use. Small pumps, which can have problems with overheating at high loads, usually have a continuous-duty rating and an intermittent-duty rating showing how much it can produce for short times before it needs a break.

Flow Rate
Vacuum pumps are flow rated according to how quickly they can move air when both sides of the pump are at equal pressure (i.e. open to the air.) Of course, as the vacuum on one side of the pump increases, air flow decreases. Manufacturers can provide the curves that show what the flow rates should be as the vacuum increases.

Power Requirements
Vacuum pumps use relatively little power compared to air compressors. The aforementioned pressure-flow curves should also include the amount of drive power required as the vacuum levels change (and thus allow you to derive efficiency rates by dividing power needed by air moved at each point along the curve.)