How to Maintain Vibrating Screen in Summer

How to Maintain Vibrating Screen in Summer

In summer, excess temperature is a hidden danger of daily operation for vibrating screen, generally speaking, working requirements of the environment temperature is not more than 40 ℃, so during the daily operation of vibrating screen, what we should concern about is not only the process of production, but also the degree of temperature that the vibrating screen can bear.

For the outdoor working conditions, a anti-sunshine net or cover should be set up for the vibrating screen.

Long-time sun exposure not only make the machine easy to get aging, but also cause the vibrating screen can not work normally due to the high temperature which will affect the screening efficiency and quality, it will even lead to a serious component damage, such as the damage of vibration motor.

For the indoor working condition or vibrating screen works in an ore processing plant, please pay attention to the adjustment of the indoor temperature, as well as the ventilation and the permeability, generally, a good working temperature is not more than 40 ℃.

 

The Application of Vibrating Screen in Ceramic Industry

Vibrating screen is widely used in abrasive, ceramic building materials, foundry industry, food, paper making, metallurgy, pharmaceutical, environmental industries, however, concerning the ceramic industry, how much do we know ?

 

Exquisite porcelain calcining technology is very strict to the requirement of raw materials, in the screening process of ceramic materials, generally, the particles are required to be sieved in a high precision, due to the choice of the vibrating screen should contain a variety of elements such as: granular distribution, density, water content, viscosity, temperature and capacity, etc., you can select different vibrating screen as per different raw ceramic materials as follows:

1. rotary vibrating screen is suitable for the requirement of high precision material and small production output.

 

2. ultrasonic vibrating screen is suitable for the requirement of high screening efficiency.

 

3.linear vibrating screen is suitable for the requirement of large output and precision is not as good as rotary vibrating sieve.

 

The Advantage of using Wooden Screen Frame for Vibrating Screen

Vibrating screen wooden screen frame and plate have the advantages of sufficient strength, high opening hole rate and less blockage etc. When vibrating screen vibrates, the different shapes and sizes materials will pass through the screening plate under the action of vibration, material separation in order to achieve classification purpose.

Vibrating screen wooden screen frame and plate is commonly used for linear vibrating screen, it is convenient to replace screen mesh, you can also add bouncing balls which will increase the rate of passing through the screen mesh to prevent the blockage effectively, it is suitable for powder material screening. Wooden screen frame includes cypress screen frame, white pine screen frame and the Korean pine screen frame. The first one is an economic, the cost of the last two is 3 times higher than first one.

Wooden screen frame is an important working parts to complete the screening process, and it should be selected reasonably as per the requirement of screening equipment and working environment in order to achieve the best effect.

 

Does vibrating screen apply to environmental or sewage treatment industry

There are many people questioning the processing capacity of vibrating screen in sewage treatment, however, we can see the vibrating screen plays an irreplaceable role in environmental industry and sewage industry as it can remove the municipal wastes, particles of heavy metals and fine particle pollutants in sewage effectively.

Paper-making industry:
Vibrating screen acts as a filter grid in the pre-treatment of industrial sewage which generated in paper-making industry, and effectively removed large particles of pollutants in wastewater.
Vibrating screen plays an important role in sewage treatment:
1. Sanitary sewage
With the improvement of life quality, the emission of sanitary sewage capacity is also continuously increasing. Although numerous municipal wastes are mixed in the sanitary sewage, vibrating screen has very good application in the pre-treatment of these municipal wastes. 
2. Sewage treatment plant
Sewage treatment plant disposes the sewage by passing through pre-treatment, primary and secondary treatment, advanced treatment and others. We have mentioned that it can play the main role in grid filtration in the pre-treatment process. Then we can utilize the exquisite vibrating screen to carry out fine filtration before sedimentation. This will not only shorten the settling time, but also improve the energy efficiency of the sewage treatment.
In summary, vibrating screen has obvious expression in the field of environmental protection and sewage treatment capacity and function. However, we have to understand that only the more meticulous manufacturing and improve the working efficiency of vibrating screen in all aspects, after that only we can more efficiently utilize these working performances and benefit features of vibrating screen.

How to Reduce Vibrating Screen Noise

 By its nature, during the normal operation Vibrating screen only through vibration can achieved sieving, but the vibration is the root cause of the noise and the sound level is high, the sound sources are many and complex. How can we effectively reduce the noise of vibration screen?

Recently, after we conducted a noise test on vibrating screen in multi-point and multi-directional, we found that the noise spectrum shows broadband characteristics of the low-IF, the sound level also increases with the increases of frequency and amplitude. So, we have carried out research involved vibrating screen noise source analysis and noise reduction measures study.

1. First of all after we analysis the main noise source such as screen plate, side plate, vibration exciter bearings and steel springs and etc, therefore we propose the following noise reduction measures:

2. Fastened all parts on the vibrating screen, particularly the screen plate which replacement frequently, to avoid generated additional vibration due to the loosening of individual components;

3. Replace the punching steel screen plate to polyurethane screen plate with the advantage of small elastic modulus, low noise impact or rubber screen plate;

4. In the structure design of screen box you can use plenty of rubber and plastic component, besides you should consider the stiffness of the side plates, use appropriate stiffness to reduce vibration, thereby reducing low frequency noise waves.

5. Use rubber cloth wider spring to replace steel spring to reduce the impact;

6. Equipment the vibration exciter with soft acoustic cover;

7. Between the inner ring and outer bearing damping to be treated, the bearing rolling elements can be made into the hollow interior of the hollow rolling bodies or rolling elements added damping material, which can reduce the vibration and noise of bearing.

Several motion trajectory of vibrating screen

 The power source of vibration screening equipment -vibration motor can produce round, oval, straight, complex mode of motion.

  Vibration screen has been using vibration motor as power, which is simple and reliable and effective. Vibration motor vibration body in different installation form of combination, can produce different vibration trajectory, so as to effectively accomplish tasks.

   Linear vibrating screen: vibration body (vibration box body and material) projection of the vibration trajectory in horizontal and vertical surface are on the line, the vibration form called linear vibration. This type of vibration sieve is called linear vibrating screen or line screen. The vibration motor two sets of the same type installed in the machine body, so that the two vibration motor shaft are parallel to each other's position, running to the contrary, so running with synchronization, the body produces linear vibration.

  Circular or elliptical vibration: vibration trajectory of the vibrating body projection in the horizontal plane is a straight line, and the projection in a vertical plane is a circle or an ellipse, the vibration form known as round or elliptic vibration. Usually a vibration motor is arranged on the mechanical vibration’ body, can produce this movement. Circular or elliptical vibration occurred in the plane perpendicular to the rotating shaft of the motor on the vibration phase, the form is depand on the vibrating motor and the relative position of center of gravity.

  Composite vibration: the vibration of the vibrating body is generated by the two groups of vibration system, the vibration form is known as the compound vibration. In general there are two kinds of forms, which are dual compound and twin composite type . Vibration screening equipment to certain special properties, the use of two different models of different speed vibration motor, packed in sieving equipment receiving end and a discharge end, so that the vibration by feeding end show large amplitude and low frequency, and the discharge end presents the vibration of high frequency and small amplitude, central overlap two vibration screening equipment the screening equipment, play a screening role in high effects.

  Rotary vibration is also known as three dimensional vibrations : vibration trajectory of the vibrating body projected on the horizontal plane is a circle or an ellipse, the vibration form known as the rotary vibration. This kind of vibration sieve was known as the rotary vibration sieve. Rotary vibration can be divided into flat rotary vibration, vortex type vibration and rotary type vibration in three forms. Projection vibration trajectory when the vibration body in a vertical plane is a horizontal line, the vibration form known as the swing type vibrating; Projection when the vibration body trajectory in a vertical plane is an inclined line, the vibration form known as the vortex vibration. Projection vibration trajectory when the vibration body in a vertical plane is a circle or an ellipse, the vibration form known as the rotary type vibration

  Usually produce rotary vibration by vibration equipment of vertical vibration motor excitation, the vibration form is depend on vertical vibration motor excitation at both ends of the fixed block angle. Two foot mounting type vibration motors can also be installed in two sides of vibration equipment, and the rotating shaft in a set angle, vibration equipment will also produce rotary vibration.

How to solve Vibrating Screen tripping problem

The tripping problem usually occurs during the vibrating screen operation the generally reason is the electric problem. In this article, for the vibrating screen tripping problem we summarizes some common cause and solutions.

1, Check whether the air switches over current protection capacity inconsistent or aging, if existence, you should repair or replace the air switch directly;

2, Check whether the bearing of vibrating screen or vibrating motor damaged, lack of lubricants etc, this problem will lead to overload then result in tripping;

3, Check whether the cable exists sheel phenomenon;

4. Check whether the device power has problem;

5. Check whether the breaker aging or damaged;          6. The vibration motor magnetic circuit performance degradation can lead to current excessively then causing tripping.

Pharmaceutical Vibrating Screen

Pharmaceutical vibrating screen is one kind of vibratory screening equipment that tailored for the pharmaceutical industry specifically, which comply with the 2010 amendments to the "China Pharmaceutical Manufacturing Practice" (Good Manufacture Practice, hereinafter referred to as GMP) requirements in the pharmaceutical equipment standards. During the production process does not pollute the drugs, is the standard choice of material grading screening in the pharmaceutical industry. GMP has a high requirements for pharmaceutical equipment especially in the material and material selection, pharmaceutical vibrating screen produced by Henan Pingyuan Mining Machinery Co., Ltd is strictly accordance with the GMP requirements and upgrade on the basis of ordinary vibrating screen, mainly used for screening and filter all kinds of medicine materials, such as fines, powder, and dry and wet materials etc; By doing this we wish that our vibrating screen can meet your specific requirements.

Main features

1, the pharmaceutical vibrating screen uses high-quality SUS304 stainless steel;

2, both inside and outside of the equipment has been trough polished, smooth and clean procedure, no black spots, no glitches;

3, Pharmaceutical vibrating screen used rubber balls that in line with GMP pharmaceutical grade silicone material;

4, the whole machinery must be through clean and disinfection procedures by alcohol before the machinery leave the factory

5, some pharmaceutical materials with explosive characteristics, so when screening these material pharmaceutical vibrating will equipment with a vibration-proof motor to avoid the vibration motor shell overheating result in fire or explosion during the production process;

Pharmaceutical categories such as: pharmaceutical intermediates, medicinal supplementary material, Chinese medicine powder, Chinese medicine liquid, western medicine powder, western medicine liquid and other acidic, alkaline, oily, etc more than thousands of materials. Generally pharmaceutical industry used 304 stainless steel vibrating screens.

NOTES: This series of pharmaceutical vibrating screen can be one or more layers. According to users different requirements can be divided into: gate vibrating screen, add edge vibrating screen, ordinary vibrating screen or linear vibrating screen; production of materials usually adopt stainless steel and carbon steel. It can also according to customer requirements, material properties, to custom more appropriate screening machine

 

For more information, pls do not hesitate to contact us via : 

Web:http:www.pkmachinery.com

Mobilephoe:+86 18338953783

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

The problems about vibrating screen spring

 When customers need vibrating screen spring, we should ask customers the following questions:

We need to know:

I. Customers require steel spring

1. the pitch diameter of spring

2. the wire diameter of spring

3. the coil number of spring

4. the effective coil number of spring

5. the free height of spring 

6. spring stiffness

II.When customers need rubber spring or rubber steel composite spring:

1. the inner diameter of spring

2. the external diameter of spring

3. spring height

4. spring stiffness

How to choose vibrating screen

How to choose which type of vibrating screen is suitable for your products?
In the industry of processing and production, only those customer purchased vibrating screen before has the knowledge of choosing a suitable vibrating screen for their production line. For the new users, normally 1/3 of them doesn’t know how to a vibrating screen. Let’s us share our experience and knowledge with you.

Overview of vibration screen
Different nature of materials used different type of vibrating screen. The screening process of materials refers to the size of material. The materials particle sizes which are bigger than the mesh size are unable to penetrate through it. Hence, it will leave at the surface of sieve mesh. The sieve separation must have the relative motion between the screen surface and material in the vibration screen. This motion enables the materials showing an active loose state.

Types of vibrating screen
·Circular Vibrating Screen
-Applicable industry: coal dressing, ore dressing, building materials, electricity and chemical industry and etc.
-Its motion is rotational.

·Drum Screen (Trommel screen)
-It widely used in screening wet materials.
-Its motion is like rotation of a drum

·Banana Vibrating Screen
-Applicable industry: sinter ore, sintering and palletizing, ore classification and dehydration classification and referral.

·Dewatering Screen
-Applicable industry: large sintering plant, palletizing plant, concentrator, coal preparation and coal washrag.

·Gyratory Vibrating Screen
-Applicable industry: abrasive, food, salt, sugar, chemical, pharmaceutical, mining, metallurgy and recycling.
-Its motions are horizontally at first then converted into elliptical then discharge in linear motion.

·Linear Vibrating Screen
-Applicable industry: plastic, rubber, ceramic, food, pharmaceutical, chemical, fertilizer and glass industries.
-Its motion is parabolic motion. Materials is been throw forward.

·Rotary Vibrating Screen
-Usage: screening, filtering, grading and removing impurity.
-Applicable material: powder, grain and liquidity material

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Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, andVibrating screen, Bucket elevator, Screw conveyor, Scraper conveyor using the world's most advanced technology, we are willing to serve every company to meet your custom needs. our goal is "be the future global leader of mining machinery industry". have any questions, please contact us without any hesitation.

For more information, pls do not hesitate to contact us via : 

Web:http:www.pkmachinery.com

Mobilephoe:+86 18338953783

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

The Function of Damping Spring used by our Vibrating Screen

The damping spring is considered as a spare part which used to reduce the vibration of the vibrating screen that created by the vibrating motor. It is widely use in the vibrating machine. It can used to control the amplitude of thevibrating screen.

Besides, damping spring helps to save the energy usage and measure the force that created by the vibration motor. Most of the damping spring is made of the galvanized spring steel; hence, it is rust resistance and always flexible. That is why the damping spring has long life span.

On the other hand, by adjusting the position of the spring pedestal, the adjustment of the screen surface angle can be achieved. The screening efficiency is related to the springs’ performance. Therefore, there are some conditions that need to take note while choosing the damping spring:

1.The design of the damping spring must according to the types of the materials used, the working environment and conditions, as well as the quantity of the materials used.

2.If rubber spring is used, the degree of bonding between the metal and the rubber must be take note in order to avoid the concentration of the surface adhesive stress.

3.Regular maintenance and replacement of the damping spring is needed.

4.Appropriate size and materials that used to made rubber spring is very important. When the screening machine is working, force will be created and this cause the rubber spring to consume the energy. Once this happened, the energy that consumed will be converted to heat energy. This will reduce the performance of the rubber spring as rubber is a poor heat conductor.  

For more information, pls do not hesitate to contact us via : 

Web:http:www.pkmachinery.com

Mobilephoe:+86 18338953783

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Address: 289 Yellow River Road, Xinxiang City, Henan Province, China