Laboratory roll crusher | laboratory double roll crushe

  Laboratory counter roll crusher | laboratory double roll crusher Hebi Weiqin instrument XPZ counter roll (or double roll) crusher is suitable for finely crushing various materials with medium or low hardness
Its compressive strength is generally below 700kg / cm2
This kind of crusher is divided into different types according to its roll size, feed inlet size, feed particle size, discharge particle size and efficiency, but their working principle and basic structure are the same
First, working principle and structure of double roll crusher double roll crusher 1 Working principle the main working parts of this kind of machine are two rolls for relative rotation installed in parallel on two horizontal axes
After the materials enter the crushing chamber and are crushed by the rolls, they enter the receiving hopper through the gap between the two rolls, and the discharge particle size can be changed by adjusting the gap size
2
The structure of roller crusher is generally divided into box cover, box, roll, transmission mechanism, gap adjustment mechanism, spring compression mechanism, base and other parts
(1) Box cover
The box cover includes box cover, feed hopper, feed hopper insert plate, splint, etc
The feeding hopper insert plate is used to control the size of the feeding port, so as to control the feeding speed; The splint is used to control the flow direction of materials and prevent them from flowing outside the roll and damaging the box
(2) Box
Both sides of the box body are equipped with a spring pressing mechanism and a gap adjusting mechanism, and two rolls (3) are installed in the body
The driving roller includes driving shaft, roller, belt wheel, bearing, bearing seat with groove at the bottom and sprocket: one end of the driving shaft is equipped with belt wheel, the other end is equipped with sprocket, the middle is equipped with roller and fixed on the base by the bearing seat
The driven roll includes driven shaft, roll, bearing, bearing seat with groove at the bottom, sprocket, etc
The driven shaft (secondary shaft) is equipped with a sprocket and a roll is installed in the middle
The transmission mechanism of the double roll crusher includes a motor, a belt wheel, a sprocket and an intermediate sprocket (tensioning wheel)
The motor belt wheel and the belt drive the driving roll to rotate, and the latter drives the intermediate sprocket through the sprocket (tensioning wheel), which drives the driven roll to rotate in the direction opposite to the rotation direction of the driving roll
The gap adjustment mechanism is composed of hand wheel, adjusting bolt, lock nut and sliding screw, which is installed on the right part of the guide keyway on the bottom surface of the driving roll bearing seat
Rotating the hand wheel can make the driving roll slide along the guide keyway, so as to change the gap between rolls
The spring compression mechanism is composed of It is composed of compression spring, spring seat, adjusting screw and locking nut
It is flush installed in the circular groove on the side of the driven roll bearing seat
Its function is that when the hard non broken objects enter the crushing chamber, the spring is compressed, the driven roll moves left along the guide key, the gap between rolls increases and the non broken objects are discharged
Main technical parameters of counter roll crusher model xpz250 & times; 150 XPZ-200x 125  XPZ-200x 75 roll size / mm & phi; 250× 150  & Phi; 200× 125  & Phi; 200x 75 feed particle size / mm & lt; 13 discharge particle size / mm & lt; 3— 1
Productivity (kg
H) 400-300 350 ~ 250 300-200 roll speed / (r
min-1) 400 400  400 motor model y112m-4 , YIOOLl-4  Y90l motor power / Kw4 , 3  1
5 power supply voltage / V three-phase 380 , Overall dimension / mm750x 500x900  750x 500x870  640× 455 mass / kg350 , 350  230
Counter roll Installation, use, maintenance, installation and inspection of (or double roll) crusher the crusher shall be installed horizontally on the concrete foundation and firmly fixed with anchor bolts; it is best to pad hardwood or other vibration damping materials on the concrete foundation to reduce vibration and noise
Check whether all fasteners are firm and tighten them if they are loose
? I open the belt cover and check whether the conveyor belt is in good condition In case of any damage, it shall be replaced in time; Wipe off the oil stain on the tape and the tape wheel
At the same time, check and adjust the tension of the tape
The tension of the tape is to press down the tension edge of the tape with fingers, and its deflection is 15 & mdash; 20mm is appropriate
Open the chain box, check whether the symmetrical center line of the sprocket is in the same plane, and check the tensioning degree of the sprocket
If adjustment is required, loosen the fixing bolt of the intermediate sprocket first, and then move the position of the intermediate sprocket to the place with appropriate tensioning degree
Check and adjust the spring compression mechanism
During adjustment, loosen the lock nut on the adjusting bolt first, and then turn the opening adjusting bolt with a wrench? Section bolt, so that the spring has a certain pressure on the driven roll bearing seat, and the pressure depends on the crushing particle size requirements, and then tighten the lock nut
Check and adjust the roll clearance
During adjustment, loosen the locking nut of the adjustment mechanism, rotate the two hand wheels with two hands at the same time to move the driving roll bearing seat along the guide key until the clearance meets the requirements, and then lock the nut