The vibrating feeder is also called the vibrating feeder. The vibrating feeder is used in the production to feed the massive and granular materials from the storage bin to the receiving device evenly, regularly and continuously. In the sand and gravel production line It can continuously and evenly feed the crushing machinery, and coarsely screen the materials. It is widely used in the combined crushing and screening equipment in metallurgy, coal mines, mineral processing, building materials, chemicals, abrasives and other industries. It is called vibrating feeder since then.

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How about vibrating feeder

Vibrating feeder: The vibration is relatively stable, the work is reliable, the life is long, and the exciting force can be adjusted. At the same time, the flow rate can be changed and controlled at any time, the adjustment is convenient and stable, the vibration motor is the excitation source, the noise is small, the power consumption is small, the adjustment performance is good, and there is no rushing phenomenon. Simple structure, reliable operation, convenient adjustment and installation, light weight, convenient maintenance and so on. After seeing so many features, how do you feel about the vibrating feeder?

Are there any maintenance requirements for vibratory feeders?

1. During the operation of the feeder, the amplitude, the current of the vibrating motor and the surface temperature of the motor should be checked frequently. It is required that the front and rear amplitudes are uniform, not swinging left and right, and the current of the vibrating motor is stable. If any abnormal situation is found, it should be stopped immediately.

2. The lubrication of the vibration motor bearing is the key to the normal operation of the whole feeder. During use, the bearing should be filled with difluidized molybdenum 2# grease regularly, once every two months, and every month in high temperature seasons Once, the motor is dismantled and repaired every six months, and the internal bearings are replaced.

Correct operation and proper maintenance can prolong the life of the vibrating feeder and play a good role!

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Basic concepts of vibrating screens: What they are, what they are for and how they work.

Basic concepts of vibrating screens: What they are, what they are for and how they work

What are vibrating screens and which are its main applications for use

Also called simply screens, a vibrating screen is formed by a vibrant chassis that supports in its interior one or several surfaces or elements of screening.

The screens serve to classify the different particles by size, starting from a bulk product in a continuous process. The inlet material (the raw product) advances from the part where the screen is fed to the opposite end in which the particles come out separately according to their size, shape or density. There are also vibrating screens that are loaded by the center and the product moves radially to the outputs that are on the periphery.

For the correct advancement of the product it is necessary that the process is continuous, and it is due to the vibration if the screening surface is horizontal. Most of the screens have a certain inclination in such a way that the advance movement of the product is due to a combination between gravity and vibration.

Screening elements

The screening elements are flat or slightly curved surfaces having perforations of a certain size such that when a product is poured in bulk on the element it only passes those particles whose size is smaller than the size of the perforations.

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The screening elements can be a metallic or nylon wire mesh, bars that pass material between them, metal sheet with circular, square or hexagonal perforations, more or less rigid sheets of rubber or polyurethane with perforations.

The type of element is chosen according to the application, nature of the product, size and shape of the particles, abrasivity, adhesion, humidity and temperature.

A screen can have several screening elements on top of each other forming different floors. In this case, the floor with the larger perforations is placed in the upper part and successively in lower floors the elements with smaller and smaller perforations are mounted. In this way each particle is trapped between the floor that has cut points (openings) greater than the particle and the floor that has smaller cut points.

Screening efficiency is much higher with vibrating screens

Traditionally there have been non-vibrating screens consisting of a fixed mesh with a lot of inclination. When introducing the vibration, the product shakes and the particles jump without sliding on the screening surface. Each jump is an attempt of the particle to pass through a hole and the probability of this happening is much greater if the machine vibrates. In other words, the effectiveness is much greater.

When a particle jumps and falls again it can do so in a hole or an area where there is no hole. If the screening element is a wire mesh, the particle can fall on the wire or on another particle and not squeeze through the hole it should. This is why no screen has an efficiency of 100% because it would require an infinite number of jumps so that all the smaller particles that the holes actually leak.

The concept of screening efficiency is clear: it is the percentage by weight of the particles that actually filter through the holes divided by the total that should be screened.

Production capacity of vibrating screens

The more quantity of product you intend to classify, the more surface you need for screening. The most immediate symptom that a screen has become too small is that it decreases its effectiveness because it simply does not fit so many particles through the holes.

On the other hand, the smaller the size to be classified, the more surface is needed since the smaller holes, the less quantity of product can pass through them.

Vibration frequency in vibrating screens

As a general rule for large classifications, low frequencies and large vibration amplitudes are preferable and for fine classifications high frequencies and small amplitudes. In other words, if the particle is large, a slow and wide movement is better in which the particle gives few jumps but large and if it is small it is better than many jumps but smaller. It is a question of the particle not passing several single jump holes.

As a general rule for large classifications, low frequencies and large vibration amplitudes are preferable and for fine classifications high frequencies and small amplitudes.

Importance of the correct feeding

In the screens, as in any sorting machine, it is necessary to take advantage of the entire width of the work surface from the beginning of it. If the product falls &#;piled&#; on the screening surface, the particles of the top of the pile will not touch the mesh or the screening element until the pile disappears by the vibration. By the time this happens, it will already have traveled half way of the surface. In other words, we waste surface with a very important loss of production and also the area where the pile is made will receive severe wear with the consequent extra maintenance expenses. It also increases, especially with products of low density, the risk of jams if the pile takes a lot of height. This makes no sense and it is not acceptable for correct screening.

That is why it is essential to pay attention to the implementation and design of the ducts that pour the product on the screen and use auxiliary means as vibrating distributors if necessary.

Good screens and bad screens

A good vibrating screen must be reliable, minimize wear and maintenance and have a strong vibration as any vibrating machine that boasts: the more it vibrates the better it goes, that is, it gives more production and efficiency.

On the other hand, most of the &#;bad&#; screens are not really bad but inappropriate to use: If the product is wet and sticky, it will stick to a metal screening element rather than a polyurethane screening element. If it is dry and fine, the screen should be dust-tight. If it is a matter of screening large and heavy particles, the screen should be very robust. If it is very robust and used with fine products, it will consume more than necessary in electricity and maintenance costs (but that shouldn&#;t pose as a problem because business energy suppliers can be compared at Utility Saving Expert).

The combinations are endless, and a good selection, suitable for use at first, will make the user does not have to remember this machine again in life, or at least until he needs to install another screen.

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