Maize can not be sieved without vibrating screen

 Vibrating screen should be adopted in the beginning of the removal of impurities during the production of maize starch,in order to ensure a safe production of raw materials,so the removal of impurities is very necessary, maize raw materials contain a variety of impurities, dust, organic impurities, inorganic impurities. The general design will be 3 screen decks, the first deck screen surface with an aperturesize of 17-20mm hole, aimed to eliminate over sized impurity; second deck screen surface with an aperturesize of 12-15mm hole, used to remove impurities of medium size, third deck screen surface with an aperturesize of 2mm hole, used to remove minor impurities.

Advantages are high precision, large capacity, simple structure, low energy consumption, low noise, long service life, good sealing, no dust overflow in the screening process, and reduce the pollution of the dust, the screening efficiency is up to 98. It is very suitable for the screening and classification of powdery and granular materials, applicable to dry powder material chemical industry, food, medicine, metallurgy, plastics, glass, building materials, food, fertilizer, abrasives, ceramics etc.

 

How to debug linear vibration sieve?

1. Linear vibrating screen generally adopts three-phase alternating current. Please ensure correct power supply connection ,no conductive material, specialized alternating current socket.
2. The base must be fixed firmly by bolt to guarantee a same height difference front and back supporting seat , the feeding end and discharge end in a horizontal plane, otherwise screening effect will not reach the requirements of qualified products.
3. Check the flatness of screen mesh, ensure screen mesh is installed on the frame correctly, keep the screen mesh in the same horizontal plane to prevent screen tilt, and screening materials not up to the ideal state.
4. Check the each component of linear vibrating screen to ensure they’re firm and reliable, all the bolts must be tightened without looseness.
5. Ensure there is 30-50mmgap between linear vibrating screen and the surrounding fixtures, and check whether screw is locked well or not.
6. Take off the transportation support before starting up the linear vibrating screen, and add the support again until the vibrating screen operation becomes normal.
7. Pay attention to observe the material trajectory after starting up, adjust the screening state according to the material screening trajectory. 

What reasons lead to material accumulation phenomenon of vibrating screen?

Some customers said material accumulation phenomenon occurred in the use process of vibrating screen, according to many years of analysis experience, the reasons can be summed up in four aspects:
1.There is a problem of vibrating screen mesh selection, too small mesh will cause a low rate of material passing through the mesh.
2. Check whether the ground level of the vibrating screen is flat or not, besides,high material inlet will affect the material running track, resulting in material tilting to one side.

 

3.Check whether the screen mesh and outlet are horizontal or higher than outlet or not, under normal circumstances, it should be horizontal or 6mm higher, the design is not the same according to different material discharging outlet.
4.There is a problem on the vibration motor angle adjustment, improper angle adjustment of vibration motor will cause material accumulation, if the angle is small,the material will spread outward quickly on the sieve surface,while if the angle is large, the spreading speed will be slow. If you have strict requirements of screening accuracy, the angle can not be too small so as not to affect the screening precision. In general, the vibration motor angle of the vibrating screen is 45 degrees when leaves the factory.
Users can also change the vibration motor angle to 100 degrees according to the the special requirements of the material ,and then material will be concentrated to the central screen mesh. 

How to Select the Driven Device for Linear Vibrating Screen ?

Linear vibrating screen can achieve dry and wet screening,and also can achieve automation work on the working site. Here PK Machinery will talk about the driven device selection for linear vibrating screen.
With regard to the material like ceramic, food, etc with small density,capacity and vibrating screen model, generally the screen surface length is <3000mm, screen surface width is <1200mm, and the weight of the vibrating screen is relative light, under such circumstances, the driven device of 2 sets vibrating motors rotate oppositely at the same time will be adopted. Motor installation on the bottom, upside or both sides of the screen equipment can be optional.

While the material like coal, mineral, building material, etc with large density, capacity and the required vibrating screen model, generally the screening surface length is >3600mm, screen surface width is >1500mm, and the weight is heavy. Under such circumstances, the driven device of 2 sets motors drive 2 sets vibrating exciter will be adopted. Vibrating exciters will rotate in different directions which can be installed on the bottom or the upside, then produce vibrating exciting force to achieve screening. 
If the working site’s installation space is limited, or there are some special requirements, we could optimize the design.  

What should we notice when use linear vibrating screen for the first time

Firstly, check if there is bolt looseness of the linear vibrating screen.
Secondly, remove four fixed plates of all the springs on the linear vibrating screen in order to protect the machine from scratch during transportation process.
Thirdly, read the manual carefully and check the components before testing the linear vibrating screen.
Besides,please also note the following important notes:
1.Since vibration motor works continuously, it needs to be filled with oil regularly .
2.Check if there is screen mesh damage when the machine stops working.
3.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.