Factors should be Considered when Purchase a Vibrating Screen

First, the physical properties of the material to be sieved
Including material particle size, shape, moisture content, bulk density, and other material properties. When the particle size is very small, mesh is small, usually screening rate is very low, the same amount of processing need to use a larger model; when large humidity of materials, screening efficiency will be reduced, but the larger mesh size, moisture the impact is smaller; when the material is corrosive, usually made of stainless steel or stainless steel material contact parts.
Second, the nature and structure of the screen surface
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.

circular vibrating screen

Third, the production conditions
When a large load screening machine, the low screening efficiency. Feeding uniformity of screening process significant, so try to achieve uniform feed (In this regard, our company specializes in plane rotary sieve inlet Added sub-feeder, can achieve uniform feed).
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

rotary vibrating screen

Henan Pingyuan Mining Machinery Co. Ltd is the most professional manufacturer of Belt conveyor, and Vibrating 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. 

      Tel: +86 373 579 9198

      Fax: +86 373 507 1699  

      info@pkmachinery.com  

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

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.

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Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, Vibrating screen, Bucket elevator, Screw conveyor, and 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.

Henan Pingyuan Mining Machinery Co., Ltd 

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

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Email Address: info@pkmachinery.com

Official Website: http://www.pkmachinery.com/

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.

Gyratory Screen used for Tea was Delivered to India

On September 11th, 2015, one set gyratory screen ordered by our Indian customer was delivered from Qingdao Port. This kind of machine is used to screen tea and its capacity is 100-150kg/h. According to our customer’s requirements, the engineer selected model 5PXZS1236 to meet the needs.

 

Gyratory screen has 5 layers and the size of screen of every layer is 8 mesh, 10 mesh, 12 mesh, 16 mesh, 20 mesh respectively. So this type can meet customer’s demand well. Actually, this business can realize our mutual benefit.

 

In addition, PK Machinery has abundant experience in doing business with foreign customers and exporting vibrating screen, belt conveyor, bucket elevator, scraper conveyor and screw conveyor for many years. We anticipate your enquiry sincerely.

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 the vibrating 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.  

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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.

What should We Note during the Operation of Gyratory Screen

Gyratory screen is similar to rotex screener, it is designed with gyratory motion which can obvious improves the distribution of the material. Applicable material includes urea, potash, fertilizer, activated carbon, pellet, ceramic powder, sugar, salt, starch and fireproofing material etc. Here PK Machinery will introduce necessary notes before starting up the screen.

 1. Check the fastened part, safe protection device and lubrication before start-up.
2. Test run without load first for about 3-5mins to see if the rotation direction meets the requirement.
3. Feeding material with normal operation once non-load test run is normal,
4. Check the material discharging condition during running, if any blockage is found, please solve it timely.
5. Check the material distribution on screen mesh is uniform or not, if necessary, stop machine and adjust.
6. If there is abnormal noise or vibration that you have to stop the gyratory screen, please stop machine at once, only when the trouble is eliminated, then you can start up.
7. If gyratory screen is operated in a production line together with other equipment, please start up downstream equipment, then start up the upstream equipment.

Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, and Vibrating 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.

Website:www.pkmachinery.com                    
E-mail: info@pkmachinery.com
Tel: +86 373 579 9188
Fax: +86 373 507 1699
Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

Application Analysis of Calcium Carbonate Rotary Vibrating Screen

The sealing performance of calcium carbonate rotary vibrating screen is pretty good, non-blocking design and precise screening. Besides, you can also choose ultrasonic vibrating screen instead of common rotary vibrating screen in order to achieve more accurate screening performance, the screening accuracy even can reach 500 mesh.

 In the process of production of calcium carbonate, it mainly includes light calcium carbonate and heavy calcium carbonate, the production process of two kinds of calcium carbonate is the same during crushing and screening. When screening the calcium carbonate, the output rate is designed according to manufacturing production rate per hour, the screening amount is calculated as per the material amount after crushing, the general selection of material granularity is around 100 mesh and the main selection specification is 60 mesh, 80 mesh and 120 mesh etc. In addition, the mesh size is also selected according to the needs of users. In the process of screening, rotary vibrating screen is the best screening equipment, the screen mesh can be replaced with the previous required mesh size in order to achieve the screening requirements.

Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, and Vibrating 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.

Website:www.pkmachinery.com                    
E-mail: info@pkmachinery.com
Tel: +86 373 579 9188
Fax: +86 373 507 1699
Address: 289 Yellow River Road, Xinxiang City, Henan Province, China

How to reduce noise during application of rotary vibrating screen effectively(1)

 Rotary vibrating screen is a powder screening equipment with high accuracy. There are various noise might occur during the operation. The louder the noise will cause the greater damage to rotary vibrating screen, thus it is very important to find out the reasons of noise, analyze the reasons and find out the solutions to solve the problem effectively. The following are the reasons and effective solutions for noise occurs in rotary vibrating screen:

1.In order to fix rotary vibrating screen equipment during the process of transportation, the bolts will be added with the means of transport. However, the bolts that connected to rotary vibrating screen equipment might be left and causing noise during operation. 
Solution: remove the bolts 

2.The clamp bolts are not tighten.
Solution: check and tighten up the clamp bolts.

3.The clamp bolts are not completely jointed.
Solution: open and re-joint the clamp bolts, ensure the clamp bolts are jointed completely.

4.Due to the operation of rotary vibrating screen, the plate that is used for supporting the bouncing ball might be deviated from its place or it might be damaged.
Solution: re-locate the plate to its original place if it is deviated, or replace a new place if it is damaged.

Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, and Vibrating 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.

Tel: +86 373 579 9198

Fax: +86 373 507 1699

Email: anneguo329@gmail.com

Skype:pkmachinery09

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

Linear Vibrating Screen

 Introduction Linear vibrating screen is designed with dual-vibration motor drive.Two synchronous motors are reversely placed so that the exciter generate reverse excitation force, the exciting force generated by eccentric block cancel each other out on the parallel direction of motor axis,and stack together with the perpendicular direction of motor axis, so its trajectory is linear.Linear vibrating screen is suitable for particle size from 0.074 -5 mm,the maximum size should be less than 10mm.

► Application:
Linear vibrating sieve is widely used in mining, coal, refractories, metallurgy, building materials and other industries. Mineral linear vibrating screen is usually used for the screening and grading materials in large, middle and small particles.

► Feathers
-Less energy consumption,lower noise,longer service life
-The beam and screen box are connected by high strength blot without welding
-High accuracy screening efficiency
-Simple and stable structure, convenient maintenance

► Advantages
     A.Common advantages and features of our Linear Vibrating Screen
         1.Suitable for rough screening with high capacity.
         2.Long travel distance for materials on the screen surface, high screening efficiency.
         3.Parallel transportation of materials while screening.
         4.Adjustable inclination of screen surface.

     B.Drive and Mounting of Linear Vibrating Screen
         Drive is achieved by electric motor with carden shaft to the drive shaft equipped with twin unbalance adjustable weights where required additional v-belt drive can be provided. The number of exciters is increased according to screen width and two models are available with the exciters arranged above the screen or below depending on application.
Each unit is mounted on hollow, reinforced rubber springs which reduce noise levels, reduce dynamic forces, have optimal expansion and contraction properties without the need for bump stops and dispense with the need of a counterswing frame.

Gyratory Screen for different industry

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
Urea gyratory screen is also widely used in Chemical industry, food processing, refractory materials, building materials, activated carbon,food,PVC powder and other fine materials.
Working principle
Gyratory screen adopts to 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 not only improve the operation environment but also reduce the dynamic ratio and foundation load effectively.

Features
1.Reasonable design,simple structure,stable operation

2.Fully enclosed and energy-saving design

3.Self-cleaning device (bouncing balls) of each layer,anti blockage

4.No vertical movement,screen cloth with long service life

5.Fully enclosed structure, no dust pollution

Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, and Vibrating 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.

Website:www.pkmachinery.com     

E-mail:anneguo329@gmail.com

Skype:pkmachinery09