65438+

Solution: Stop the machine immediately and re-fix the loose or dropped parts.

2. The sand making machine is unstable and the fuselage swings too much. Reason:

(1) The wearing parts on the impeller are seriously worn;

(2) The feed particles are too large;

(3) Impeller internal blockage, resulting in uneven feeding and swinging.

Solution:

(1) Replace the easily damaged parts to realize the balance of the impeller inside the sand making machine;

(2) Strictly control the feed rate, which shall not exceed the maximum allowable value of the equipment;

(3) Remove the blockage on the impeller channel, and often clean the broken cavity.

3, bearing temperature rise fault reason:

(1) Dust and foreign matter enter the bearing parts;

(2) Bearing wear;

(3) The bearing is short of oil.

Solution:

Replace a new bearing;

(2) cleaning foreign bodies;

(3) Increase lubricating oil on time.

4. Failure cause of inflexible operation of bearing: the bearing sealing cover of sand making machine is fed and caused by other foreign objects.

Solution: Open the sealing cover of the sand making machine and clean the materials and foreign objects inside.

5. Failure cause of seal ring damage at the upper and lower ends of bearing: the upper (lower) shaft sleeve is heated due to friction between the upper (lower) cover and the bottom surface, which damages the upper (lower) shaft sleeve for a long time.

Solution: Remove the damaged upper and lower sealing rings and replace them with new ones.

6. There is a sound of metal collision in the sand making machine. Cause: Impeller and bushing are loose or other parts are worn.

Solution: Check, repair or replace the relevant parts of the machine.

7. The reasons for the failure of large discharging granularity are as follows:

(1) Due to the long running time of the equipment, the V-belt of the transmission part is loose;

(2) The feed particles are too large;

(3) The impeller speed of the sand making machine is too low and unreasonable, resulting in low efficiency and large particle size.

Solution:

(1) Adjust the belt tightness;

(2) In strict accordance with the feeding requirements of the sand making machine, the feeding is too large, too small, and the collision and crushing are not enough, so it is difficult to meet the requirements of finished sand);

(3) Adjust the rotating speed of the impeller until it reaches the ideal standard.

8. The sound of the machine suddenly became louder and there was a rumble. Reason:

(1) The sound caused by loose bolts becomes louder;

(2) There is something wrong with the bearing or gear of the sand making machine, which leads to louder sound;

(3) The grinding parts of the sand making machine are seriously worn and loud.

Solution:

(1) Tighten the loose bolts;

(2) Check whether the bearings and gears of the sand making machine are in good condition, and repair or replace the bearings and gears in time;

(3) Replace wearing parts in time.

9. Causes of oil leakage at the upper and lower ends of the shaft: The sealing ring should move up and down with the bearing, causing the sealing ring to wear and leak oil.

Solution: Remove the worn sealing ring and replace it with a new one.

10. The idle resistance is too large. Cause: The sealing cover on the bearing is blocked by material.

Solution: Take out the blockage from the bearing and check whether the corresponding equipment is blocked.