How to Select Proper Rotary Vibrating Sieve

How to Select Proper Rotary Vibrating Sieve

1.The size of working area: Due to the circular sieve, sieve surface area of rotary vibrating screen will directly affect screening yield. Larger screening area can improve screening efficiency. Therefore the size of working area is one of the key factors of selecting vibrating screen. 

2.Material characteristics: including liquidity, shape and size of materials. 

3.Texture of material: Due to different screening material, the vibration sieve materials have different options. For example, it’s usually selecting 304 stainless steel materials if screening food, salt, sugar, etc. If screening chemical or metallurgy materials, users can select Q235 material. On the one hand it can reduce cost, on the other hand it doesn’t affect real use. 

4. Screen mesh can be divided into stainless steel and carbon steel. 

Rotary vibrating sieve has different shape and size. Generally, it is designed based on the actual application and site conditions or to meet customers’ requirements under special circumstances. Common models of vibration sieve are: DH-800mm, DH-1000mm, DH-1200mm, DH-1500mm, DH-1800mm, etc.

How does vibrating feeder install in the production line

How does vibrating feeder install in the production line

Feeder usually installed in different production lines for uniform feeding to ensure the stability of convergence between devices. When the model of vibrating feeder is small, the driving device is two vibration motors, if its model is big, the driving device is a motor with exciter form. 

According to the customer's site environmental conditions and layout, installation of vibrating feeders can be designed hanging and sitting these two methods. 

When it is used under the silos, hoppers, etc., if there is no suitable feeder installation space, then it can be hung under the hoppers by suspension device. In this way can it achieve space-saving. 

If it is used in very fine dust and other materials, vibrating feeder can be designed to seal cover with dust ports, at the time link to the filter can achieve dust sealing and environment protection. If you have other special requirements, this vibrating feeder can achieve non-standard design process to meet requirements.

Picture about Linear Vibrating Screen

Picture about Linear Vibrating Screen

Differences between the YK and YA circular vibrating screen

Differences between the YK and YA circular vibrating screen

When customer choose and buy circular vibrating screen, YA and YK series of vibrating screens are optional. So what's the difference between the two types of vibrating screen? Which series should choose? Here,PK Machinery answers for you.

In general,YA and YK belong to circular vibrating screen series, YK series block type eccentric circular vibrating screen is updated products of YA axis eccentric circular vibrating screen.

According to the research,development and the application level of domestic and overseas vibration machinery , bring in the advanced technology in the same industry of Germany, Japan and other countries, combine with the actual running environment,our engineers fully optimize and design a new type of high efficient YK series vibrating screen.

In addition,retaining the feature of the original YA type axial eccentric circle vibrating screen,YK series circular vibrating screen has the following significant advantages:

1.Exciter adopts eccentric block form which not only makes the single heavy exciting force of the eccentric exciter weight increase, but also exciting force can be randomly controlled, so it is easy to modular design and use;

2.Simple machine structure is beneficial to improve the level of equipment manufacturing technology and assembly accuracy;

3.Using the flexible connection of cross axle cardan shaft or rubber coupling etc which makes running smooth;

4.Sieve machine is more efficient with greater capacity;

5.Using cycle and service life is longer;

6.Equipment maintenance will be simple and convenient,the machine running efficiency is improved significantly.

 

Reasons Why Material Accumulation Occurs in Vibrating Screen

Reasons Why Material Accumulation Occurs in Vibrating Screen

We have heard from our customer that there exists material accumulation in vibration screen. What reasons lead to this kind of problem? Here engineers from PK Machinery will analyze it from 4 aspects as follows. 

1. Whether mesh number of vibration screen is ok. If mesh is small, it will reduce material screening rate. 

 

2. Whether vibrating screen placed on the ground is steady. Otherwise it will make material accumulate on the one side. 

3. Whether the outlet and screen mesh are in the same level. In general, they should be in the same level. 

4. Whether angle of vibration motor is proper. If not, it also can result the material accumulate. The small the angle, the quick the material is spreading, vice versa. Generally, angle of vibration motor is 45°when it is delivered from factory. Also, users can adjust the angle to 100°according to real requirements to make material move to screen center.

Select Proper Vibration Motor for Vibrating Machinery

Select Proper Vibration Motor for Vibrating Machinery

It is known that vibration motor has wide application, and it is matched with vibration feeder or vibrating screen generally. Due to its great significant function, know how to choose the most appropriate type is very important. Here PK Machinery will talk about the selection steps as follows: 

1.Based on the requirements, please make sure of the needed frequency (r/min) and amplitude (mm). For example, six vibration motor could drive vibration feeder, vibrating screen and other vibrating machinery. 

2.It can get vibration weight G(kg) and work out needed vibration force Fm(N) based on structure of vibration machine. 

3.It can work out the Fm according to the real vibrating frequency, then users can get vibration motor type. What should be noticed is that exciting force FH of motor must be larger than Fm. 

4.Please design the whole structure and calculate the real vibrating parameters. After reconfirmed, if users think the vibration motor type is not proper, a new type should be selected.

Effective Ways to Solve Blockage Problem of Vibrating Screen

Effective Ways to Solve Blockage Problem of Vibrating Screen

As one kind of high precision screening equipment, vibrating screen has advantages of lower noise, higher efficiency, small volume and so on. It is suitable for screening particle, powder materials. Our customer who has ever said wet material blockage happened after putting vibrating screen into use for a period of time. Aiming at this kind of problem, PK Machinery will list some useful suggestions. 

1.It’s better to increase exciting force of vibration motor as well as amplitude. 

2.Please use high-frequency vibrating screen so that it can increase vibrational frequency. 

3.Another way to solve this problem is to add some water so that it can increase liquidity of material. 

4.Due to blockage caused by wet materials, please change screen mesh in time. 

5.Operators can clean mesh by brush to address problem of blockage. 

Blockage problem will affect the working efficiency of vibrating screen, hope above mentioned suggestions can help you. Any problem or information, please click www.pkmachinery.com

Install Circular Vibrating Screen Punching Mesh

Install Circular Vibrating Screen Punching Mesh

Generally, screen mesh can be divided into manganese steel woven wire mesh, punching mesh and stainless steel screen plate. Different mesh should be used in different vibrating screen according to the real condition. 

It should keep a certain angle when users install circular vibrating screen. If punching mesh is put into use, it must adopt wood to press it tightly. 

Disadvantages of screen mesh with insufficient tension: 

1.Screen mesh will be out of shape. Due to the loose screen mesh, it will cause the second vibrate and then the mesh will be damaged. 

2.Because mesh is easy to bend, it will affect effective screening area and reduce screening efficiency. 

3.If mesh is depressed, it can cause the phenomenon of material retention and then must reduce production efficiency. 

From above listed introduction, it must improve tension of screen mesh so that it can not only enhance lifespan of mesh effectively, but also make sure of screening efficiency and productivity.If you are interested in our products, please contact us or visit our website www.pkmachinery.com

 

7 Ways to Help You Advance Vibrating Screening Efficiency

7 Ways to Help You Advance Vibrating Screening Efficiency

1. With regard to dry screening, it must strictly control water content of materials. If water content is high, operator can take burdening screening into consideration.

2. Please reduce rate of blocking. It can be considered that users can adopt self-cleaning screen plate.

3. It’s better to enhance aperture ratio of screen plate so that higher screening efficiency can be achieved.

4. Users can change the feeding material way so that can ensure screen surface could be made fully use.

5. Users also can adjust the dip angle of vibrating screen. It has advantage of decreasing material thickness to realize thin materials screening.

6. With regard to circular vibrating screen, it’s better to adjust ballasting method to improve screening efficiency.

7. If it is possible, the most effective method to enhance screening efficiency is to adopt wet screening.

Needed Data When Selecting Screw Conveyor

Needed Data When Selecting Screw Conveyor

In the actual production, we usually use screw conveyor. For the purpose of selecting type or offering for users quickly and exactly, it’s better for users to provide technical parameter and requirements with manufacturers. Today, PK Machinery will present some necessary technical parameters when selecting screw conveyor for your reference.

1. Name of material: _______

2. Particle size: _______mm

3. Size distribution_______%

4. Water content: _______%

5. Capacity: ________t/h or_______ t/m3

6. Density of material: ________t/m3

7. Temperature of material: _______℃

8. Distance between inlet and outlet: ______m

9. Material is corrosive or not: _______

10. Voltage: ________V; Frequency: _______Hz

11. Upstream and downstream equipment _______

12. Working environment(indoor or outdoor): _______ 

 

According to the above data, manufacturers can select proper machine and offer for it quickly based on your requirements. Meanwhile, it can save time and money for you.More information,please visit www.pkmachinery.com

Consider Following Factors When Ordering Vibrating Screen

Consider Following Factors When Ordering Vibrating Screen

1. Physical property of materials

Particle size of material, shape, water content, bulk density and other similar characters all called physical property of materials. If particle size of material and mesh size are small, the screening rate will be very low accordingly. In this condition, it’s better to choose the larger type if it is to be kept the same capacity. If water content of material is large, it will affect screening rate. While if users adopt one large mesh size, water content will hardly affect screening rate.

1.  

2. Screening surface structure

If materials do vertical movement on the screen surface, it will have high screening rate and large capacity. For certain material, production rate and screening rate of vibrating screen are determined by mesh size. In general, wide screen surface has high production rate and long screen surface has high screening rate. What’s more, the larger the effective screening area is, the higher the screening rate is.

3. Production condition

Feeding materials uniformly has great significant for screening process. So it’s better to reach the requirement of feeding materials equably.

Only taking the above influence factors into consideration can users purchase the most economical and appropriate vibrating screen.More information, please visit www.pkmachinery.com

Basic Installation Notes of YA Circular Vibrating Screen

Basic Installation Notes of YA Circular Vibrating Screen

1.Please refer to installation drwawing to make concrete foundation before installing YA circular vibrating screen. Also please control plainness error within 3mm when foundation bolts or steel plate is embedded. 

2.It must inspect all springs after having installed the vibrating screen and make sure that every supporting position is under uniform stress. What’s more, please make sure that axis of motor should be lower axis of vibrator in 3-5mm.

3.Please make sure that all parts of vibrating screen should be connected firmly and all bolts should be fastened again before operating machine.

4.It can adjust exciting force by adjusting the intersection angle of eccentric block, thus it can adjust amplitude of vibrating screen.

5.Distance between vibrating screen and other obstacles should be more than 100mm.

Above mentioned notes are basic factors, more information or any interest, please visit www.pkmachinery.com 

YA Circular Vibrating Screen:6 Points to Tell You How to Maintain it

YA Circular Vibrating Screen:6 Points to Tell You How to Maintain it

1.It must inspect whether all fastening bolts are loose or not before operating YA circular vibrating screen.

2.It should be 4-6 hours for non-load running to make sure that screen boday keeps smooth. And the temperature of vibrator bearing is no more than 75℃.

3.It must tighten all bolts again after having non-load running.

4.Make sure that circular vibrating screen runs normal, it’s better to inspect fixture condition of the bolts regularly.

5.Inspect wearing parts frequently and change the worn or inelastic damping springs in time. The djustment, application and maintenance of vibration source should refer to vibration source specification.

6.After having stopped feeding materials and ensured all the materials are discharged, operator can turn off the machine.

Using Literature of Vibration Platform

Using Literature of Vibration Platform

Literature

1.What users do first before vibration platform is installed is that the foundation should be prepared.Also, the fixed bolts must be tight. 

2.It’s better to have a trial run for 3-5min and then stop it before all installation works have been done. After that, users should inspect all fixed bolts to confirm whether they are loose.

3.Users should usually inspect vibrator bearing and change lubricating oil at fixed period to let the vibrator bearing keep a better status.

Operation Specification

1.Before vibration platform is put into use, it should be no-load running for 3-5min for 2-3times and then it can be used officially.

2.If users find that there is some abnormal noise, the machine should be stopped and then inspect whether the fixed bolts are loose. If necessary, users can inspect whether the spare parts is damaged.

3.After all works have been done, operator should turn off power source and clean the surface of vibration platform.

 

What Will Happen During Ultrasonic Vibration Sieve Screens Tin Powder

What Will Happen During Ultrasonic Vibration Sieve Screens Tin Powder

1.If users find working efficiency of ultrasonic vibration sieve is low, it’s better to inspect the effect of acoustic. If the acoustic quality of ultrasonic vibration sieve is not so good, it will block mesh.

2.There are different sizes in tin powder. If users find this problem, it’s better to inspect mesh firstly. Pore diameter is different or mesh is damaged, it will cause uneven powder sizes. So users had better choose high quality mesh in standard manufacturers.

 

3.Oxygen content of screened tin powder is out of standard. If users find this problem, it maybe caused by poor sealing. Therefore, it’s better to check sealing ring to see whether the sealing condition is qualified especially during summertime.

4.If working status of ultrasonic vibration sieve is instability, it maybe make mesh heated and blocked. So it’s better to select proper vibration motor power and inspect the flexibility of equipment adjusted. 

From the points listed, do you think it’s hard to screen tin powder? Don’t worry. PK Machinery will help you solve these problems and select the most appropriate vibrating screen. If you have any interest, please contact us or visit our website:www.pkmachinery.com

Know About Shaft and Shaftless Trommel Screen

Know About Shaft and Shaftless Trommel Screen

Trommel can be divided into two types, one has shaft, another without shaft. According to different materials or real working environment, it’s better to choose the appropriate one.

Trommel screen without shaft:

In general, screen is installed in a horizontal angle. The drum can be driven by motor wheel gear or chain wheel. The rotation speed is slow and length of trommel screen is long so that material can be screened totally. Shaftless trommel screen can be installed cutting tool so that can tear up household garbage and other plastic bag. Generally, shaftless tromme screen is widely used to screen materials with small density, such as wooden chips, rubbish, activated carbon, fertilizer, chemical material and so on. 

Trommel screen with shaft:

Generally speaking, the device is installed on the frame in a inclined angle. When the materials are fed into the device, due to inclination and rotation of drum device, materials on the surface will rotate. In this situation, qualified materials will be discharge from outlet of bottom hopper while unqualified materials will be discharge from outlet of tail drum. Generally, it is widely used to screen material with large density, such as sand, coal,limestone and so on.

Necessity of Installing Hopper on Conveying and Screening Equipment

Necessity of Installing Hopper on Conveying and Screening Equipment

Are you worried about the bearing capacity of your equipment? Today, PK Machinery will give you some useful advice.

Whether users adopt vibrating screen or belt conveyor, once those equipmrnt work with other facilities, it’s very important to choose proper equipment to joint them. Generally, it’s better to choose hopper as connection device, because it can not only reserve material, but also reduce the impact force to screen mesh when feeding material so that can prolong the lifespan of device. 

For instance, one of our customer ordered inclined screw conveyor, due to its small capacity and it is needed to feed material directly, so our engineers suggest that it’s better to lay out one set hopper on screw conveyor. In this way can it not only reserve material to make screw conveyor work continuously, but also increase the working efficiency.

With the purpose of improving the production efficiency, it’s necessary to install hopper above the conveyor equipment or vibrating screen. Thus, it can reduce the cost of production line and save costs.

hopper

Distinguish Ultrasonic Vibration Sieve From Ordinary Rotary Vibrating Screen

Distinguish Ultrasonic Vibration Sieve From Ordinary Rotary Vibrating Screen

Ultrasonic vibration sieve is equipped with a ultrasonic generator that can prevent blockage. Specially, it is suitable for screening light specific gravity materials or fine powder. Generally, ultrasonic screening system consists of oscillator, ultrasonic resonant power supply and resonance ring. The high-frequency vibration which is generated by ultrasonic resonant power supply will change into high-frequency longitudinal oscillation wave through oscillator. This vibration will be spread to resonance ring to make it sympathetic vibration, and then this kind of vibration will be transmitted to the screen mesh evenly through the resonance ring.

Ultrasonic vibrating screen can separate all kinds of powder, enen though the powder is hard screened. In general, ordinary rotary vibrating screen cannot do this. Ultra-fine powder will be effected by large ultrasonic acceleration through mechanical wave which is attached on screen mesh. Generally speaking, compared with ordinary rotary vibrating screen, the passing rate generated by ultrasonic vibrating screen will be increased by 50%-400%. Mainly performances are as follows:

1. Reduce time of cleaning mesh.
2. Doesn’t pollute to powder which is generated by bouncing ball and other auxiliary materials.
3. Reduce screening frequency, keep high precision screening.

Remember Cleaning Ways of Stainless Steel Vibrating Sieve

When You See Ways to Clean Stainless Steel Vibrating Sieve

After long time using, stainless steel vibration sieve will become matt. So know how to clean it efficiently can prolong its lifespan. This article will tell you how to do, and hope you can have a better understanding.

When users put the stainless steel vibration sieve into use, especially screening easy corrosion materials, it will make a passivation film on the surface of machine. Because of pitting corrosion reactions caused by self excitation response, it will generate small holes on the surface of vibrating screen where the passivation film corrosion resistance ability is weak. Meanwhile, along with the approach of chloridion, it will form strong corrosive solution, which will accelerate the corrosion reaction rate. This kind of situation will have a destructive effect on the surface of the stainless steel vibrating sieve.

Thus, there is no doubt that users should clean and maintain stainless steel surface timely if the machine under the situation of corrosive environment so that can extend its service life. What's more, users had better focus on avoiding scratch the surface during cleaning and using liquid bleaching composition or abrasives, steel wool and abrasive stuff. It is better to clean the machine with water again after finishing scrubbing so that washing liquid can be washed off.

More information, please visit www.pkmachinery.com

Brief Introduction of Circular Vibrating Screen

Brief Introduction of Circular Vibrating Screen

► Introduction 
Circular Vibrating Screen is a kind of new and highly effective vibrating screen that does circular vibrations and has multiple layers. Circular vibrating screen adopts cylinder postures eccentric block to produce strong exciting force. Its main body is connected by high strength screw bolts. A circular, elliptical vibration motion is created in order to sieve the materials efficiently. It is composed of screen box, screen mesh cloth, suspension (or support) device, underframe and motor.

► Working principleCircular vibrating screen separator uses eccentric block(YK type)/eccentric shaft(YA type) to produce strong exciting force, due to the unbalanced centrifugal force of inertia of the weights on the exciter, screen box vibrates, it can obtain different amplitudes by changing the exciter eccentric weight.

► Application
Ore circular vibrating screen is available for smelting , quarry , coal preparation, ore dressing, energy, power, chemical industry,construction material.

► Features
   1.Simple structure, easy maintenance, high production efficiency
   2.Using large clearance bearings and lubricated with thin oil, little noise and long service life
   3.Sieve beam and screen box adopts high strength bolt connection, no welding processing
   4.Small amplitude, high frequency, large dip angle structure to enable high screening efficiency and great handling capacity.
► Advantage

 A.Common features and performance of our Circular Vibrating Screen

1.High screening efficiency         

2.Strong vibration force created        

3.Adoption of punching sieve or steel made screening mesh in order to prevent blockage.        

4.Screen body connected by using high strength screw bolts.        

5.Adopts spring steel woven mesh or perforated sieve-plate, which is helps to prolong the service life and prevent blockage.        

6.Rubber vibration spring is used to reduce noise pollution and provide smooth vibration operation.     

B.Drive and Mounting of Circular Vibrating Screen

Drive is by electric motor and cardan shaft to the main drive shaft equipped with a single unbalance weight where required additional v-belt can be provided. The drive shaft is mounted on heavy duty roller bearing sets, lubricated with grease or oil. Like the linear vibratory screens, circular vibrating screens are mounted on reinforced rubber springs to prove the same benefits in performance and longer lifespan.

Introduce Circular Vibrating Screen

Introduce Circular Vibrating Screen

► Introduction 
Circular Vibrating Screen is a kind of new and highly effective vibrating screen that does circular vibrations and has multiple layers. Circular vibrating screen adopts cylinder postures eccentric block to produce strong exciting force. Its main body is connected by high strength screw bolts. A circular, elliptical vibration motion is created in order to sieve the materials efficiently. It is composed of screen box, screen mesh cloth, suspension (or support) device, underframe and motor.

► Working principleCircular vibrating screen separator uses eccentric block(YK type)/eccentric shaft(YA type) to produce strong exciting force, due to the unbalanced centrifugal force of inertia of the weights on the exciter, screen box vibrates, it can obtain different amplitudes by changing the exciter eccentric weight.

► Application
Ore circular vibrating screen is available for smelting , quarry , coal preparation, ore dressing, energy, power, chemical industry,construction material.

► Features
   1.Simple structure, easy maintenance, high production efficiency
   2.Using large clearance bearings and lubricated with thin oil, little noise and long service life
   3.Sieve beam and screen box adopts high strength bolt connection, no welding processing
   4.Small amplitude, high frequency, large dip angle structure to enable high screening efficiency and great handling capacity.

► Advantage

    A.Common features and performance of our Circular Vibrating Screen

    1.High screening efficiency 

    2.Strong vibration force created

    3.Adoption of punching sieve or steel made screening mesh in order to prevent blockage.

    4.Screen body connected by using high strength screw bolts.

    5.Adopts spring steel woven mesh or perforated sieve-plate, which is helps to prolong the service life and prevent blockage.

    6.Rubber vibration spring is used to reduce noise pollution and provide smooth vibration operation. 

 

    B.Drive and Mounting of Circular Vibrating Screen

Drive is by electric motor and cardan shaft to the main drive shaft equipped with a single unbalance weight where required additional v-belt can be provided. The drive shaft is mounted on heavy duty roller bearing sets, lubricated with grease or oil. Like the linear vibratory screens, circular vibrating screens are mounted on reinforced rubber springs to prove the same benefits in performance and longer lifespan.

Lubrication of Rigid Impeller Feeder

Lubrication of Rigid Impeller Feeder

When putting rigid impeller feeder in tio use, it's important to add enough 00# lithium lubricating grease to it so that this machine can operate normally.Here we mainly introduce you that different parts should be added different lubrication.

Add sufficient 00# lithium lubricating grease to reducer of rigid impeller feeder,within 6-10 months of being put into use, the transmission and bearing parts of rotary valve should be replaced and the grease also need to be changed. If rotary valve works in a high ambient temperature, humid or too much air return, please shorten the time of changing the new grease.

During operation, please check the lubrication parts every month.

Above mentioned lubrication time is just the minimum requirements, detailed time should be flexible and depends on the operation condition.

 

List of Lubrication parts
 

No.	Name of Lubrication part	Lubrication material	Lubrication part cycle	Lubrication method
1	Coupling	2# lubricating grease	1000 hours	Lubricator
2	Bearing seat	3# calcium base grease	1 month	Lubricator
3	Gearmotor	00# lithium lubricating grease	6 months	Lubricator

Brief Introduction of Gyratory Screen

Brief Introduction of Gyratory Screen

►Introduction
Gyratory Screen is a new developed equipment particularly for urea .The main function is to provide accurate separation of materials without product deterioration, thereby resulting greater product yields at higher production rates. This machine consists of top cover, top screen fame, spacer, bottom screen fame, the base space and the screen box. The unique gyratory motion of the near horizontal screen surface and the available screen mesh cleaning system secure the gyratory vibrating screen quality as a high capacity product that efficiently developed for materials screening purposes.

 

► Application

As one of new type and high standard screening equipment, gyratory screen can be used to screen raw materials and bean curd in large scale grease factory, and classify large granular urea, powder materials or granulated feed in feed mill. Also, it can be used for preliminary cleaning of raw material in feed mill as well as classifying intermediate products after regrinding in middle-sized feed mill. What's more, gyratory screen can be widely used to screen and classify materials or finished products for grain, sodium bicarbonate, large granular urea, urea granules, ceramsite, zirconia, reduced iron powder, barite, spice, plastic, mining industry, rubber, wood industry, plywood, medicine, sugar, mining, papermaking, chemical, refractory materials, building materials, activated carbon, food, PVC powder and other fine materials etc..With the development of market circulation economy, it is increasing to be used in waste plastic industry to classify, and also can do size grading for materials with broken.

 

► Working principle
Gyratory screen adopts Rotex technology, we also call it Rotex screen, which obviously improves the distribution of the material, thus it will enhance the screening efficiency and the effective utilization of the screen surface, also reduce the powder content of the final material .This design is totally enclosed without dust pollution,it can not only improve the operation environment but also reduce the dynamic ratio and foundation load effectively.

 

Six factors influences screening efficiency of vibrating screen

Six factors influences screening efficiency of vibrating screen

Vibrating screen is one most important sieving equipment in mining, metallurgical, chemical and other industries In the actual operation, many factors may influence the screening efficiency, here PK Machinery will introduce as follows:

1. crackle occurs on the steel channel of motor bracket

In the process of running, the platform vibrates strongly which will directly cause a large secondary vibration in the process of running which will make steel channel of motor bracket crack.

 

2. weight deviation of vibrator eccentric

Vibrator eccentric is to make the vibrating screen vibrate, its weight directly affects the vibrating amplitude value, if there is eccentric weight deviation, the vibration force will be scattered at running time, which is directly reflected on the screen body, and the amplitudes inconformity of each part, it will cause vibration sieve connection parts or welding joint cracking.

 

3. severe wear and deformation of outlet lining plate.

From wear condition of outlet side plate, soil and ore residue mixed and harden, during start-up and running processing, the vibrating screen vibrates and tamps constantly, soil becomes hardening and causes the soil and side plate striking.

4. crackle occurs on side plate and reinforcing rib crack, and the length is different.

Soil stuck seriously inside the outlet side plate, when vibrating screen works, soil compaction, and there will be a huge impact contact generated between vibrating screen and screen base frame. At the same time, it also seriously affects the linear motion of vibrating screen.

 

5. damping spring failure.

After using for a long time, the spring will occur permanent deformation due to the rubber aging or long-term stress which lead to the spring failure and vibrating amplitude inconformity of each part, causing the vibrating screen connection parts or welding joint cracking.

6. misalignment of eccentric plumb line and natural plumb line.

When install an exciter, after connecting the universal shaft coupling and exciter well, there will be misalignment of eccentric plumb line and natural plumb line due to the influence of the driving shaft torque which leads to eccentric rotation out of sync, and the inconformity of amplitude of vibrating screen each part, causing the vibrating screen connection parts or welding joint cracking.

4 Advantages of Linear Vibrating Screen with an Inclined Angle

4 Advantages of Linear Vibrating Screen with an Inclined Angle

Linear vibrating screen is widely used in mining, coal, refractory, metallurgy, building materials and other industries etc. PK Machinery can customized according to the client’s requirement and site space, such as the inlet and outlet location, vibrator motor installation location and linear vibrating screen can be inclined.

1. The motor angle of inclined linear vibrating screen can be adjusted freely, you can also enlarge the vibration source to get a amplitude which can meet the requirement of material screening.

2. The linear vibrating screen with an inclined angle can increase the screening production and improve production efficiency.

3. According to different material properties, the material can be sieved quickly due to the inclined angle of linear vibrating screen, it also can reduce the damage and friction of the screen mesh which brought by material.

4. When the angle is 15 °more than parallel, material are input as obtuse angle, it will increase the service life of the screen mesh effectively.

How to Solve the Noise Problem of Linear Vibrating Screen

How to Solve the Noise Problem of Linear Vibrating Screen

1.before start-up of linear vibrating screen, we should first check whether the bolts of every part are fastened properly or not, the purpose of fastening bolt is to make the parts more consolidated and reduce the unnecessary extra vibration during operation.

2. add rubber sheet on screen side plate, inlet, outlet and hopper to effectively inhibit the high frequency vibration and reduce the radiated noise. But in the actual production process of rubber ,due to heat and pressure ,it will transform or damage. So please check and replace after using a certain period of time.

3. adopt small elastic modulus ,low impact noise polyurethane sieve plate or rubber sieve plate instead of the punching steel sieve plate , rubber spring instead of steel spring.

 

4. damping treatment between inside and outside of the bearing housing, bearing roller can be made out to hollow roller or add some damping materials in the interior of the hollow roller.

5. Adopt flexible wheel disk gears instead of steel gears, which using rubber elasticity of gear wheel disk to transfer the torque, absorbing the vibration caused by engaging-in and engaging-out of the gear.

What is the Applicable Material for Drum Screen

What is the Applicable Material for Drum Screen

Drum screen is a kind of cylinder revolving screening machinery that relies on gravity, its working principle is different with rotary vibrating sieve, linear vibrating screen, drum screen can generate strong exciting force, so if dealing with the proportion of lighter materials, it is not suitable for drum screen, the screen is easy to get blocked due to the irregular shape material, and the most important is the screening effect is bad, so what is the applicable material for drum screen?

 

Drum screen also is often used in mining, sand ,gravel industries, common screen mesh size can be larger than 5 mm, the smallest mesh size should larger than 3 mm, if the mesh size is smaller that is the wire mesh is small ,the service life will be shorter, besides, the drum screen doesn’t do a good job for on sieving fine material and the sieving efficiency is not very good.

 

Except for sandstone, drum screen is also more commonly used for granular material screening, such as: chemical fertilizer, ceramsite and so on. The sieving efficiency is good and easy to handle large-scale capacity. 

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 ℃.