ZK linear vibrating screen
ZK linear vibrating screen, linear movement, suitable for coal
preparation, coal washing, dressing, power and other industries,
the fine grained material, dry and wet sieving, can also be
Stripping and desliming.
The principle of work:
Linear vibrating screen are seat mounted. The utility model is
characterized in that the utility model adopts a double shaft
vibration exciter, the motor does not participate in the vibration,
and the two motors are driven to rotate synchronously with the
action, so that the screen body can make periodic reciprocating
motion along a straight line direction, thereby achieving the
purpose of screening.
1. Processing capacity, screening efficiency is higher.
2. The structure is more simple.
3. The operation is simple, the failure rate is the lowest.
4. Low equipment cost, reduce energy consumption.
ZK series linear vibrating screen is mainly composed of screen box,
exciter, supporting device and motor. The screen box is supported
by a rubber spring on the support, and the two shafts of the
exciter are respectively driven by two asynchronous motors.
1.The screen box for space metal structure of high strength bolt
connection, mainly composed of side plates, plus strong plate,
reinforcing plate, beam, beam, beam, head out to strengthen the
sieve plate etc.. Bearing truss girders, for supporting fastening
sieve plate; extend and support head beam device is used to support
the entire screen is connected with the side of the box; all parts
are made of torsional shear type high strength bolt; plate adopt
stainless steel plate, high porosity, good abrasion resistance, as
if the slime screen is installed on one. Layer composite filter on
the sieve plate, simple and convenient.
2. The exciter is a double eccentric block type vibrator. The
exciting force is strong and the amplitude can be adjusted in a
certain range. It is mainly composed of a main shaft, bearing,
bearing seat, eccentric block, fan, protective cover, vibration
exciter spindle supported on two roller bearings, which is arranged
on the eccentric block and the counterweight. Two the angle of the
exciter eccentric block of sieve vibration direction. The main
function of the fan is to promote the flow of air in the protective
cover to reduce the working temperature of the bearing.
3. the supporting device adopts rubber damping spring, mainly
composed of a gland, upper bearing, rubber spring and the lower
supporting seat. On the cover and the upper supporting seat and out
of the screen box beam head with bolts connected on the supporting
seat and the supporting seat is arranged between the rubber spring
and rubber spring has the advantages of long service life, low
noise, parking is stable and fast and reliable. The lower
supporting seat is fixed on the mounting base, and the inclination
angle of the screen surface can be adjusted by increasing or
decreasing the gasket on the lower supporting seat.
Installation and commissioning
1. preparation before installation
Before installation should be carefully checked, according to the
inventory list of equipment and random accessories are complete, at
the same time should check whether the damage caused by the
shipment and the loss of random accessories, and promptly notify
1) support installation: the installation support device of bearing
and motor frame before the foundation leveling, then adjust and
install the bearing and motor frame, and then the rubber spring is
installed in the spring.
2) the installation of screen box: sieve box adopts integral
hoisting, lifting to the wire rope at the specified location (beam)
are not allowed in the direct lifting vibrator, so as to avoid
deformation. The screen box is then hung above the supporting
position and then slowly lowered to make it located on the spring.
3) motor installation: installation, the horizontal motor needs
correction, axial center lines of the output shaft of the electric
motor and the vibrator should be coincident or slightly below the
exciter shaft center line, but not more than 5mm. After the motor
is installed in a predetermined position, the connecting wire is
connected with the motor and the electric network, and the rotation
direction of the two motors is opposite.
4) check the connecting parts (such as vibration sieve plate,
vibration etc.) fixed, lubrication of the transmission part of the
motor wiring is correct, and the hand rotation driving part, to see
whether normal movement.
5) check the exciter rotation is flexible, moving the coupling to
the exciter eccentric block from the equilibrium position, and then
suddenly let go, the eccentric block should be several times the
swing, if the move or not to move, it should be carefully to find
out the reasons and adjust.
6) if the vibration screen from the date of shipment to the
shipment for more than half a year, or due to improper storage
caused by rust and so on should be removed and cleaned the
vibration exciter, before installation and use.
3. the test run of vibrating screen is installed, should be
performed for test run, a preliminary examination of the quality of
the installation, and make the necessary adjustments.
1) empty sieve test run time shall not be less than 8 hours. During
this time, observe whether to start the sieve quickly and smoothly,
whether the vibration and stable operation, there is no special
2) screen operation, vibration sieve box should not produce yaw. As
a result of yaw, the reason may be too large or spring height on
both sides of the rotating shaft is not level, we should make the
3) if there is an abnormal noise or a sharp increase in bearing
temperature after driving, stop immediately, check whether the
bearing is flexible and the lubrication is good or not.
4) after driving 2 ~ 4H stop check the connection parts are loose,
if there is loose, to be fastened and then drive.
5) after the commissioning of the 8h, if there is no fault, the
installation works can be checked and accepted.
Operation and maintenance operating points :
1.The operator should check the equipment before work. Check the
lubrication condition of the exciter, the tension of the screen,
the tightening of bolts and the damage of the sieve surface.
2.A start should follow the process system order: empty parking
should be started before the material on the sieve net before
parking, parking is prohibited with material feeding to sieve.
3.In a work, to use visual and auditory examination of exciter and
screen box work, touch the bearing cover by hand near the parking,
check the bearing temperature rise.
4.Screen is high speed equipment, sieve operation inspection
personnel to maintain a safe distance.
|Model||Sieve surface||Feeding granularity (mm)||Power(KW)||Capacity (t/h)||Weight (t)|
|Area (m2)||Mesh size (mm)||Sieve mesh structure|
|ZK1022||2.25||0.25-50||Weaving/Strip/ Stamping/ Rubber/ Polyurethane sieve mesh||＜250||3×2||4.5-90||2.2|
ZK linear vibrating screen trajectory is linear, for coal
preparation, coal washing, mineral processing, power generation and
other industries, On the medium and fine materials dry and wet
screening, Can also be dewatering, Off medium, desliming
Linear vibrating screen are seat type installation, using a biaxial
exciter, motor does not participate in vibration, by the two motor
with the reverse self-synchronous rotation, so that the screen in a
straight line for the cyclical reciprocating motion, so as to
achieve the purpose of screening.
1.Large capacity, higher screening efficiency.
2.The structure is more simple.
3.The operation more simple, the lowest failure rate.
4.Equipment using low cost, reduce energy consumption.