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.

How to Analysis the Troubleshooting of Linear Vibrating Screen Plate?

Linear vibrating screen is a kind of vibrating screen. The linear vibrating screen can use exciting force generated by the vibration motor to realize the material accurate screening. At the same time its trajectory is linear, and has the advantages of simple structure, easy maintenance, high output and low energy consumption, which makes it is ideal for the assembly working line. 

Linear Vibrating Screen

Screen plate is an important part in the linear vibrating screen, which directly affect the quality of the linear vibrating screen effect.
How to improve the life of the linear vibrating screen plate has become the key to reduce the failure rate of linear vibrating screen. Currently linear vibrating screen ribbed slabs are easily broken, and polyurethane material is easily worn. The main reason is that the screen plate joints place lack of no support beams, screen plate mounted directly on a straight beam, screen plate and vibrator are synchronized, which keeps linear vibrating screen ribbed slabs long time in the floating state movement, then the linear vibrating screen ribbed slabs are easily to broken. After the upper sieve broken, it will produce some > 30mm substandard ore, after the lower screen broken, the effusion pool will piled ore quickly, causing the whole scrubbing process have to stop, only after cleaning all the effusion pool can reproduction. Screen plate installed directly in the beam, which also caused polyurethane and steel directly contact. During the operation of linear vibrating screen polyurethane material easily worn, which will affect screen plate life.

Vibrating Plate

Then we can use welding plate to support beam in the place of the screen joints, at the same time we can also add impact belt, and make the width of the belt is consistent with the beam width. By doing this we can reduce the wear and breakage of the screen plate during operation.

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

Four 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?

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

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.

                                                                       In addition, PK machinery also supplies bucket elevator, screw conveyor, linear vibrating screen,circular vibrating screen, rotary vibrating screen, gyratory screen etc., any inquiry, please feel free to contact us! 

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 

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

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.

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.