Vibration sieve sieve note when asphalt

Vibration sieve asphalt mixing machine is the main component , and the vibration sieve mesh is used to complete the screening process of the main working parts . To build high-

quality roads, must have high-quality asphalt mixing machine , and to ensure high-quality paving , it must use high-quality

Resistant mesh to ensure accurate grading , to prevent mixing phenomenon.
This article discusses wear weave mesh shield in the use of rotary vibration sieve elements and failure analysis . Because shields wear high carbon manganese steel wire mesh is

woven wear is quite good, generally sifted cycle 60,000 t or more, but fatigue is not enough, so in use sheets

Tight mesh oscillating screen is guaranteed life cycle of the key.
1 Guaranteed vibration sieve mesh tension is guaranteed at any time in the life cycle of the screen determinant found in actual use , some of the normal screen is not premature

damage is attributable to the use of the screen in a tensioned state could not caused . The reason may be the device and the dewatering screen two ways:
( 1 ) Equipment reasons
Rotary vibration sieve box in a long time deformation ; supporting or part of subsidence caused by welding desoldering sieve tensioning fact seemingly fixed bad ( not mesh

tension ) , the mesh generation of secondary vibration fatigue fracture .
( 2 ) Screen reasons
① tensioning bolts loose. Failed to timely tensioned mesh ;
② screen for too long, but not tensioned screens, both sides of the tension of the screen , curved edges size should generally be smaller than the distance of the screen box

walls 40 ~ 50mm, depending on the equipment before and after the tension of the mesh decide ;
③ Some mixing machine vibration sieve tensioning plate due reasons, curled portion sizes A and angle flanges have special requirements , dimension A is generally 35 ~ 40mm, if

the size of A requires less than 30mm, the flange angle requirement is less than 35 °, and the failure to produce the specific requirements made of the general form, is

Can not properly tensioned mesh prematurely due to damage . Mixing machines generally have three kinds of screen tensioning means . Either tensioning method , the screen must be

in the correct tension at all times ( to be checked at any time when it is used ) ;
( 3 ) bearing screen box a few uneven spring stiffness ( elastic uneven ) leaving the sieve box irregular jitter, will also affect the screen life.
Two main reasons for early damage sieve and troubleshooting methods
If vibration sieve mesh aperture and wire diameter mismatches , when small and wire mesh coarse , because knitting wire bending too large, causing material stress concentration

, but also make screen breakage during use . As long as users in the use of wear-resistant screen during some of the problems noted above ,

Will be able to give full play to wear mesh long life cycle, and good wear resistance and reduce production costs , and achieved good economic benefits.