What is the selection notice of rotary vibrating screen?

1.Size of working area: rotary vibrating screen is circular, sieve surface area will effect of screening yield, so screening efficiency and yield can be improved by increasing the screening area. So the size of the field is one of the keys to the vibration screening.
2.Material characteristics: material properties,flowability and size.
3.Construction material: because of the different sieving materials, the construction material is also different, for example: food, salt, sugar and other related food industries, the whole machine material is SUS304. One reason is that hardness,thickness and wear resistance of 304 material are better, besides, polished stainless steel is bright like a mirror, the surface is clean and health, maintenance is very convenient which do not affect the material quality after screening. If the material is chemical, metallurgical and other raw materials, you can choose Q235 material, which not only save cost but also not affect the use.
4.Screen mesh can be divided into two kinds: stainless steel and carbon steel.
The shape and size of rotary vibrating screen are different generally based on the actual application and the on-site condition, and can be designed according to the requirements of clients to meet special circumstances. Common types of rotary vibrating screen: XZS-800mm, XZS-1000mm, XZS-1200mm, XZS-1500mm, XZS-1800mm, etc. 

Rotary Vibrating Screen

The Mainly Tips to Install the Vibrating Feeders on Different Production Line

Vibrating feeder is usually used for uniform feeding, cloth according to be installed on different production line to ensure the stability of the connection between devices. When the feeder model is small, the driven device can be set two vibrating motors, if the model is large, the driven device can be set motor with vibrator exciter.

1.According to the customer's site environmental conditions and layout can be designed feeder hanging and sitting two installation methods.

When it is used in the following copper warehouse, hoppers, etc., there is no suitable feeder space when installed base.Then the four corners of the feeder can be used to hang in suspension under the hopper, space-saving layout can effectively feed between warehouse and by feeding equipment.

2.If the customer has requested, vibrating feeder can be designed to sit-in installation, installation to the actual arrangement of the embedded foundation.

3.If you feed a very fine dust and other materials used in the particle size uniform, vibrating feeder can be designed to seal cover with dust ports, link to the system filter, dust sealed to protect the environment.

4.If you have other special requirements, this feeder can be non-standard design process to meet some requirements.

More information,welcome to contact us via info@pkmachinery.com or www.pkmachinery.com

vibrating feeder

How to Distinguish the Difference between YA and YK Circular Vibrating Screen?

How to distinguish the YK and YA circular vibrating screen during the customer purchase the equipment?Is it really suitable for your company?Here,the following passage will introduce the difference between them detailed.Hope you have a better understanding.
YK and YA are the two series of circular vibrating screen.YK series circular vibrating screen adopts eccentric block,and YA series adopts eccentric shaft.

YA circular vibrating screen

YK series circular vibrating screen, while retaining the original YA type shaft eccentric vibrating screen features, has the following significant advantages:
1.The vibration exciter adopts the form of eccentric block,which can not only make the eccentric weight if the exciter increase,but also can adjust the excitation force randomly.
2.The screening machine structure tends to simplify,improving the level of the manufacturing process and assembly precision equipment.
3.The use of the flexible coupling cross shaft universal joint shaft or rubber couplings, etc., stable operation.
4.With higher screening efficiency, greater processing capacity.
5.Long service life and using cycle.
6.Easy to maintenance and operation,high running efficiency 

YK circular vibrating screen

Good Helper for Soybean Classification --Linear Vibrating Screen

The soybean (US) or soya bean (UK) (Glycine max)[2] is a species of legume native to East Asia, widely grown for its edible bean which has numerous uses. The plant is classed as one of the main oilseed by the UN Food and Agricultural Organization (FAO).

Soybean is oval and sphere with yellow, light green, black and so on. The most common uses of soybeans are to do all kinds of bean products, extract soybean oil, ferment soy sauce and extract protein. Soybean residues or soybean meals are commonly used for livestock feed. Linear vibrating screen can play a powerful role in soybean classification and seed selection.

 

Linear vibrating screen for soybean classification adopts double vibration motor drive. When two motors are synchronous and counter rotating, exciting forces produced by eccentric block in the parallel and motor axis direction are offsetting. And the forces in the vertical and motor axis direction overlay a joint force, so that the motion carve of linear vibrating screen is a straight line. There is a angle between two motor axes and screen surface. The soybeans are thrown up and jump forward to do linear motion under exciting force and the gravity of soybeans. Oversized and undersized soybeans with different specifications discharge from respective outlets to achieve the purpose of screening and grading.

 

We use screen with two layers to illustrate the soybean classification. The first layer is used for removing sundries in soybeans, and then the soybeans fall into the second layer. Oversized run to the outlet along with the vibrating force, and undersized impurities discharge from the third layer.

Linear vibrating screen for soybean classification has features of high quality, large capacity, stable operation, easy to operate and maintenance, fully enclosed structure, non dust overflow and so on. It is widely used in screening dry powder and granule materials in chemical, food, plastic, medicine, metallurgy, glass, construction, grain, fertilizer, abrasive, ceramics industries, etc.

The Reasons for Vibrating Screen Material Accumulation

The Reasons for Vibrating Screen Material Accumulation

During use, the vibrating screen surface may occurs the material accumulation phenomenon. So what causes the accumulation of material is it, here PK Machinery engineer based on years of experience in analysis of what can be attributed to four issues:
1.Make sure whether the vibrating screen mesh choice has problems or not, sieve mesh network is too small will cause low permeability material.
2.Check the placement of vibrating screen ground whether is flat, spout material will affect the operation of high trajectory, causing the material to one side.

screen mesh

3.Screen mesh and the discharge port whether is horizontal or is too high, under normal circumstances should be level or higher than about 6mm, depending on the material discharge port design are not the same height.
4.Vibration motor angular adjustment if there are problems, improperly adjusted the angle of the vibration motor can also cause material accumulation phenomenon, the smaller the angle on the screen surface material spread outward run faster, whereas angular displacement of the General Assembly so that bulk material outward open slow. If you are under strict requirements for screening accuracy, the motor angle should not be too small, so as not to affect the accuracy of screening, in general, the factory motor shaker angle of 45 °, the user can also special screening process based on its material requirements will adjust the vibration motor angle to 100 °, the mesh material is centralized.
Any question,welcome to contact us via info@pkmachinery.com or www.pkmachinery.com

linear vibrating screen

How to choose the suitable vibration motor for the vibration machine?

Vibration motor has many types and models with a wide application,it is usually applied with the feeder, vibrating screen combination. The vibration motor is very important in the vibration machine. It directly determines the working efficiency of the vibration machine.The vibration mechanical vibration motor selection steps are as follows:
A.According to the operating requirements, confirm the required vibration of the frequency (r/min) and the amplitude Ym (mm).
Such as the six vibration motor (n=960r /min) can drive the vibration chute, vibration feeder, vibration mill, vibrating screen etc.
B.According to the structure of the vibration machine itself, get the vibration weight G (kg) and calculate the required vibration force Fm (N) .
C.According to the vibration of the operation to get Fm, you can get the model of the vibration motor, please pay attention to the exciting force FH is larger than Fm.
D.Design the overall structure, and calculate the actual vibration parameters, after the calculation, if the vibration motor is too large or too small, motor model should be re-selected.
E.Design of vibration isolation system. 

vibration motor

How to Deal With the General Common Faults of Gyratory Screen?

If Screen body running abnormally such as Sieve unusual sports such as torsional oscillation occurs etc, mainly due to eccentric rotors installed improperly result in main axle bend or bearing damage. For these reasons, you can make the appropriate adjustments.

If mixing occurs, the mainly reason may be screen damaged or screen body seal is lax, Solutions is to replace the screen cloth or fill holes, check the seal strip.

If the output can’t meet the requirement, mainly reasons are multiple: such as the material moisture is too high, mesh blockage, mesh size does not meet the requirements, the belt speed ratio is too low or belt occurs slip, lack of feed rate, bouncing balls serious wear and tear. Solutions is to reduce material moisture, replace screen cloth or change the screen clear network system, check the pulley and adjust the belt tension, increase feed rate, replacing the bouncing ball.

     
When support frame fracture happens, mainly due to the support frame has usage cycle, long-term implants uniform or long-term bearing torsional stresses make itself flexibility failure, then result in fracture. Therefore, in the routine maintenance, you should pay more attention to the condition of the support frame, checked found and replaced promptly, if possible, you’d better replace all the support plate at the same time, and try to make every support plate force uniform, so as to make it consistent with the amplitude .

Should You Adjust The Excitation Force of Vibration Feeder?

When customers purchase feeder motor, because of the pre-supplied parameters and reality production material particle size, amount per hour occurs an error, so the customer can change the motor exciting force own according to the following description, making the process variation change.But is it necessary to adjust?
Each brought in shaft vibration motor eccentric block has a fixed and an adjustable eccentric, users can adjust the excitation force according to change the adjustable and fixed eccentric eccentric angle.You can see table 1.The different excitation force when angle different,you can see the table 2.

Table1:

Table 2:

Adjustable eccentric block rotation angle	0°	60°	90°	120°
excited force	F	0.866F	0.707F	0.5F

When adjusting the vibration motor excitation force, please disconnect the power supply before adjusting the vibration motor excitation force.What should pay attention to is that when you adjust the excitation force two vibration motor eccentric position consistent tone to avoid the phenomenon discovered the emphasis on feeder according to the damage depth.It is generally useless to adjust the excitation force is needed, please do not attempt to open the vibration motor,adjust the eccentric angle.

vibration feeder

Is The Driven Device Suitable For Linear Vibrating Screen?

Linear vibrating screen is designed with dual-vibration motor drive.According to the capacity of different material is different, the vibrating screen model and the vibration source is different also.Here PK Machinery would like to talk about the driven device selection for linear vibrating screen.
For some ceramics, food, and other less dense granular material, when dealing with a smaller amount, demand shaker model is small, usually less than the length of the screen surface 3000mm, width of the screen surface is less than equal to 1200mm, the small screen of its own weight , to meet the amount of processing conditions, the vibration source shaker select both synchronous and opposite vibration exciting force generated by the motor rotation direction. The motor can be installed on top of the screen box, bottom and sides.

Linear Vibrating Screen

For some coal, ore, building materials and other denser particulate material is too large, the environmental conditions, the general requirements of larger handling capacity, demand shaker models are also relatively large, usually larger than the screen surface length 3600mm, when the screen surface is greater than the width of 1500mm, the weight of the screen itself is also heavier. When the amount of processing required to achieve, you need to select running motor driven exciter excitation force generated as the vibration source, achieve grade materials. Exciter is usually installed above or below the screen box.
If conditions have space restrictions or special requirements, we also can make special optimized design.
If you have any interest,welcome to contact us via www.pkmachinery.com

Linear Vibrating Screen

So What is the Right Way to Operate the Linear Vibrating Screen?

What should we notice when use linear vibrating screen for the first time?Maybe you should be pay attention to  the following six points.

1.Check if there is bolt looseness of the linear vibrating screen.
2.Remove four fixed plates of all the springs on the linear vibrating screen in order to protect the machine from scratch during transportation process.
3.Read the manual carefully and check the components before testing the linear vibrating screen.
4.Since vibration motor works continuously, it needs to be filled with oil regularly .
5.Check if there is screen mesh damage when the machine stops working.
6.As some users may choose wood net rack, please also check if there is screen frame damage. Compared with steel net rack, the wood net rack is easy to replace screen mesh,however, the life span is much shorter. 

For more information,please click the following link www.pkmachinery.com

 Linear Vibrating Screen

Will Vibrating Screen Coupling Play an Important Role

Will Vibrating Screen Coupling Play an Important Role

How much do you know the coupling in mining industry?It is a universally mechanical transmission component which connect the two shafts together.The two shafts can not be separated along the rotation axis and passing a member torque when the machine running. Only after the machine stop and open connection, two axes can be separated. Couplings are already standard parts, you can select the appropriate coupling in accordance with national standards and requirements for use when using.

vibrating-screen-coupling

Since the manufacture and installation errors, deformation after impact bearer and temperature changes, the coupling of the two coupling shaft there is some degree of relative displacement. Therefore, the coupling between the gear unit and the clutch selection cross coupling. Oldham coupling is opened by the end faces of the coupling halves and a groove on both sides of the intermediate plate with protruding teeth formed. Because the convex teeth can slide in the groove, it is possible to compensate for the installation and during the operation of the relative displacement between the two shafts. This coupling parts and materials are available 45 steel work surface heat treated to improve its hardness; can also be used when less demanding Q275 steel, heat treated. 

coupling

When put into use,it is better to add lubrication grease from the middle of the hole to reduce friction and wear.Because the half-coupling and intermediate plate composed of mobile vice, not relative rotation, so the drive shaft and the angular velocity of the driven shaft should be equal. But working in relative displacement between the two shafts case, the intermediate plate will have a great centrifugal force, thereby increasing the dynamic load and wear. So users should pay attention to its operating speed is not greater than the predetermined value.

More information, please contact us or visit our website:www.pkmachinery.com

Advanced Technique Improvement of Gyratory Screen Mesh

In order to meet the requirement of our New Zealand clients who ordered 4 sets of gyratory screen with 2 layers, our screen mesh technique gets a further improvement.
This screen is used for sieving glass, the screen mesh design is different from previous design due to the special characteristics of material, the sealing performance of screen mesh is further improved.
Air hole buckles are embedded at the edge of screen mesh which can also achieve the fixation function to prolong the life span of gyratory screen mesh.
A support mesh is added under the fine screen mesh, it can not only increase the elasticity of screen mesh, but also play a role which can prevent material from piercing through the screen mesh.
Combining innovative thinking and creative power of our R&D Department with the feedback or brilliant suggestion, we are sure we will move a big step in improving our technique. Further information please click:www.pkmachinery.com  

How do we deal with the Unbalance Motor Vibration Phenomenon of Vibration Table?

How  do we deal with the Unbalance Motor Vibration Phenomenon of Vibration Table?

In the process of the operation,Vibration motor may appear the unbalance vibration phenomenon.Unbalanced vibration motor, see this sentence, there are a lot of people would be confused, vibration motor is used to produce? What is the unbalanced vibration? Today, here, we will simply describe what are the cause of unbalance vibration motor vibration.

vibration-platform

1.During using the vibration platform,a single vibration motor will arises the motor steering problems, the material will move in vibration platform surface.

2.Using two vibration motor will change the mesa vibration platform vibration uniform.Two motors due to counter rotating each other, each other offset the shaking force in central platform.

vibration-motor

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  

website:www.pkmachinery.com

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

pkmachinery

The classification of Explosion-proof Vibration Motor

1.According to the principle, explosion-proof vibration motor can be divided into explosion-proof asynchronous vibration motor, explosion-proof synchronous vibration motor and explosion-proof DC vibration motor etc.

 

2.According to the working place , explosion-proof vibration motor can be divided into coal mine use explosion-proof vibration motor and factory use explosion-proof motor.
3. According to the explosion protection principle , explosion-proof vibration motor types can be divided into the flameproof type, increased safety type, positive pressure type, no-spark type and dust & explosion-proof electrical motor, etc.

 

4.According to the matching equipment, explosion-proof vibration motor can be divided into explosion-proof motor for coal mine conveyor, coal mine winch, rock loader, coal mine fan, valve, blower, marine, lifting metallurgical hydrogenation device.

 

5.According to the nominal voltage and efficiency, explosion-proof vibration motor can be divided into high voltage type, high efficiency type, high slip ratio type and high starting torque type of explosion-proof motor.

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.

How to deal with the Linear Vibrating Screen discharging inclined to one direction

   If the linear vibrating screen handing material poorly and discharging inclined to one direction, what should we do?

   The most prominent feature is no powder dispersion.

  1. Linear vibrating screens handing material low efficiency. Generally, the irrationality installed of the vibration motor can cause low efficiency handing material of the linear vibrating screen. Normally the supplier of the linear vibrating screen will send the technical personnel to help install the screen. Their key responsibilities are guide the users install and debug of the screen. While, owing to the screen vibration some parts of the screen will happen loose during the operation. At this time, users are required to maintain the vibration screen regularly. If have some difficult problems should contact the manufacturer promptly. In order to avoid unnecessary losses, please don’t disassembly the screen privately! (Contact us :  info@pkmachinery.com)
 

 

   2. The possible reasons that caused the linear vibrating screen discharging inclined to one direction are as follows: 
 

  1) Feeding unequally. When using the linear vibrating screen to screen the material, we should try to feeding equally to avoid the screen discharging inclined to one direction.
 

  2) The installation base surface and spring seat place change.
 

 

   3) Weight error of the screen itself, the center of gravity location inaccuracy
 

   4) Whether vibration exciter location and swing eccentric block either side is on balance
 

 

  5)  The shock absorb spring is inconsistent, some of them damaged.
 

  6) Screen box transmutation.

Linear vibrating screen installation and debugging

 1. The linear vibrating screen machine in flat ground level solid (Concrete or steel structure surface), Anchor bolt (bolt penetrates based user owned), fastening.

2. The linear vibrating screen spring sets in, the seat ring(placed a screen body). Spring should be fully into the spring retainer, Ensure vertical, not twisted.

3. Linear vibrating screen vibration sieve machine parts of other objects not and machine of any rigid connection or contact.

4. Connect the power supply, Press the start button (this machine can be started directly), The vibration motor synchronous rotating in the opposite direction.

5. The adjustment of excitation force: At both ends of the eccentric block vibration motor linear vibrating screen for debugging, angle adjustment two eccentric body can change the vibration service size, Sieve machine factory before excitation has been transferred to the best state of affairs, direct access to the use of, There is without for further adjustment.

6. When necessary, can be adjusted according to the following methods: Open both ends of motor protective cover, loosen the eccentric locking bolt, The ends of the adjustable eccentric block to rotate in the same direction, The numerical para noses the reticle, the required excitation force. After adjustment, the fastening bolt is screwed down.

7. Linear vibrating screen in the open, stopping by the isolation zone will produce big vibration, To improve this situation, can be matched with the electric brake device

Common Troubleshooting Methods of Vibration Motor

1. after connect the power supply, motor is unable to start, please check:
(1) if power supply is lack of phase;
(2) if motor is loss of phase;
(3) if protective cover is damaged or rub eccentric block.
2. after start-up, there is big motor noise or motor heats, please check:
(1) if the contact surface roughness of vibration machine and motor foundation is in line with the installation requirements;
(2)if the anchor bolts are not tighten up ;
(3) if the vibration acceleration is in line with the requirements;

3. after the adjustment of eccentric block, amplitude changes abnormally please check:
If eccentric block on both ends of the rotor axis is symmetrical;
4. when two vibrating motors of vibration machine vibrate at the same time, if its phase does not conform to the requirements, please adjust the phase sequence of the single unit, don't adjust the total phase sequence of two vibrating motors.

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.

Repair Method of Linear Vibrating Screen

The repair methods of linear vibrating screen mainly aim for the common failure, which include:
1. Rotation of vibration motor becomes slow, bearing heating, if this kind of problem appears, add the lubricating oil or grease to solve it. 
2. Clogging of screen mesh, it may due to the increase of moisture content in sieve material, it may also due to loosen of both side screen mesh, the solution is to adjust the belt and shaft eccentricity distance.
3. Vibrating screen fails to start, you should check for the accumulation of dust and impurities on motor, and should be promptly removed.
4. Vibrating screen structure damages, such as beam fracture, side panel cracking. This situation needs to check the bolts, spring and eccentric block, then repair it.