As the broken tooth plate continues to wear, the discharge port of the jaw crusher gradually increases, and the product size becomes coarse. In order to reasonably balance the load of each crusher and ensure the particle size requirements of the crushed product, it is necessary to periodically measure and adjust the discharge port of the crusher, and measure and adjust it 3 to 4 times per week depending on the specific conditions.
Check ball discharging opening common lead (column block) or soap bars assay. Lead weights soon cast balls or cylinders, when measured in order to facilitate holding, in the cast iron wire ball (column) engaging, in order to put into the crushing chamber with the hand and, on the ball to be movable jaws (column) after the nip It is pulled out from the crushing chamber, and the thickness of the squeeze is measured by a caliper, which is the width of the discharge port of the crusher. If the width of the measured discharge port does not match the width required by the process, it should be adjusted. It must be noted that when measuring the discharge port, it is carried out under an empty load.
The jaw crusher uses an adjustment device to adjust the size of the discharge port. There are two types of adjustment devices:
1. Shim adjustment A set of spacers of the same thickness (shown below) are placed between the rear wall of the rack and the wedge iron, and the thickness of the shim layer is increased or decreased to reduce or increase the discharge port. Achieve the purpose of adjusting the discharge port. This method can be adjusted in multiple stages and is easy to operate, but it must be adjusted. Generally used for large and medium-sized jaw crushers, the simple swing jaw crusher uses this adjustment device.
2. Wedge iron adjustment is achieved by the wedge adjustment mechanism (shown below). It is adjusted by means of two wedge irons placed between the elbow bracket of the rear bracket and the rear wall of the frame. When the nut is screwed and the rear wedge is raised along the rear wall of the frame by the screw, the front wedge iron is along The guide grooves parallel to the side walls of the frame move forward, thereby pushing the toggle plates and the moving jaws to move forward, thereby reducing the discharge opening. This method can achieve stepless adjustment. The adjustment is convenient and time-saving, and does not need to stop, but the disadvantage is that the size and weight of the machine are increased, and it is not easy to adjust the level, and the bracket and the connecting rod are twisted, so the adjusting device is only suitable for the small and medium-sized jaw crusher. This type of adjustment device is often used in complex oscillating crushers.
1. crushing teeth plate jitter, can hear the crash metals.
Cause: The crushing chamber liner or broken tooth plate is loose, and the fixing bolt is loose or broken.
Remedy: Stop the inspection, hit the fixed wedge iron on the side wall with a hammer, then tighten the fixing bolts or replace the damaged bolts.
2. The impact sound is generated in the thrust plate support pad.
Cause: The spring tension is insufficient or damaged, and the thrust plate support pad is worn.
Removal method: adjust the spring tension or replace the spring, and replace the support pad or thrust plate.
3. The impact of the head of the connecting rod.
Cause: The eccentric shaft bushing is worn.
Elimination: Re-scrape or replace the bushing.
4. Broken product size increase
Cause: The lower part of the broken tooth plate is seriously worn.
Elimination method: adjust the discharge port, reduce the size of the discharge port, or replace the broken tooth plate by 180 ° or replace the new tooth plate.
5. After the iron is over, the support will stop swinging, the connecting rod will swing back and forth, and the pull rod spring will be relaxed.
Cause: The thrust plate is broken or the rivet is cut when the iron is over.
Elimination: Replace the new force board. Strengthen the work of removing iron, and it is strictly forbidden to fall into the crushing chamber.
6. The thrust plate falls off the support pad
Cause: The lever or lever spring is damaged and the lever nut is tripped.
Elimination: Replace the damaged parts and reinstall the thrust plate.
7. The flywheel swings significantly and the eccentric shaft rotates slowly.
Cause: The coupling of the pulley and the eccentric shaft is loose or damaged.
Elimination method: Replace the joint key.
8. The rolling bearing heats up.
Causes and elimination methods: If the oil quantity is insufficient, it should be added; if the oil quality is not good, oil needs to be changed; if the assembly is too tight, it should be adjusted; if the belt is too tight, it should be loosened.
9. The host will not turn after the power is turned on.
Cause: The motor burned or was broken, and the belt was too loose.
Elimination: Repair the motor or tighten the belt.
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