Guangzhou Huabao Mining Machinery Co, Ltd

1.

The working principle of different types of crushers is different. The following are the working principles of several crushers:

1. The working principle of heavy hammer crusher: the motor drives the rotor to rotate at high speed in the crushing chamber, and the materials are fed into the crusher from the upper feeding port, and are crushed by the impact, impact, shear and grinding of the high-speed hammer

in the lower part of the rotor, there is a sieve plate, and the particles smaller than the size of the sieve hole are discharged through the sieve plate, while the coarse particles larger than the size of the sieve hole are retained on the sieve plate and continue to be hit and ground by the hammer, and finally discharged out of the crusher through the sieve plate

2. Working principle of impact crusher: when the machine is working, driven by the motor, the rotor rotates at high speed, and when the material enters the action area of the plate hammer, it collides with the plate hammer on the rotor to break

is thrown to the impact device and broken again, and then bounced back from the impact liner to the plate hammer action area and broken again, this process is repeated

from large to small, the material enters the first, second and third impact chambers for repeated crushing until the material is crushed to the required particle size and discharged from the discharge port. Adjusting the clearance between the impact frame and the rotor can change the material size and shape

extended data:

heavy hammer crusher predicted failure causes and elimination methods

increased vibration when replacing or assembling the hammer, the rotor is not well balanced, the hammer is removed, and the hammer quality is selected according to the requirements, Make the total mass of hammer on each row of hammer shaft and its relative hammer mass meet the requirements

rece the proction capacity

1. The gap of screen bar is blocked

2. Uneven feeding 1. Remove the plug in the gap of screen bar after parking

2. Adjust the feeding mechanism

to proce knocking sound inside the machine

1. The materials that cannot be broken enter the inside of the machine

2. The fastener of lining plate is loose The hammer or other parts are broken 1. Clean the crushing chamber after parking

2. Check the fastening condition of lining plate and the common faults and repair methods of hammer and screen bar

1. If the vibration of impact crusher is abnormal:

1. It indicates that the material is too large, you can check the feeding size

2. Uneven wear indicates that the impact hammer needs to be replaced

The rotor is unbalanced and needs to be adjusted

4. The foundation should be checked and reinforced e to improper foundation treatment

Second, if the impact crusher bearing is found to be hot:

1. The bearing is short of oil and needs to be refueled in time. Of course, too much oil will also make the bearing hot. The oil level must be checked when refuelling

If the bearing is damaged, the bearing should be replaced in time

If the upper cover is too tight, the bolts should be adjusted properly and the tightness should be moderate

(3) if it is found that the discharge particles of impact crusher are too large:

1. It indicates that the hammer head is worn and needs to be adjusted or replaced

The clearance between hammer head and impact plate is too large, generally adjusted to 15-20 mm

3, too large feed particle size will also affect the discharge particle size

4. If the impact crusher belt turns over:

1. The belt is worn and needs to be replaced

2. Because of the assembly problem of the belt conveyor, the pulley should be adjusted on the same plane

5. Model parameters of impact crusher

repair method

1. The front impact plate suspender and the rear impact plate suspender of impact crusher are combined to improve the elastic vibration of impact plate, so that the materials bonded on the impact plate can be sent to the crushing shell in time, With the crushed material, it enters into the lower bin

2. Recovery and repair of impact plate of high manganese steel impact hammer. For the worn hammer, 506 electrode, 2 high carbon electrode and 5 high tungsten electrode were used for surfacing test. The wear resistance and impact resistance of the hammer are the best after surfacing with No.5 high tungsten electrode

The wear resistance of the impact hammer overlaid with 506 electrode and No.2 high carbon electrode is two times higher than that of the original high manganese steel. But the cost of these two kinds of surfacing is high, which is not economical

When the impact plate is worn 3-5mm, the 5 high tungsten electrode is used for surfacing for 2-3 times

When the impact angle of impact crusher is increased from 1500 to 3000, the impact strength can be increased to ensure the particle size after crushing

The use methods of impact hammer include grouping according to weight tolerance, alternate row replacement, cross dislocation replacement and symmetrical replacement

The gap between the rotor and the front part of the shell of the impact crusher is increased from 10 mm to 85 mm, which can prevent the front part of the body from blocking

2. For the construction of stone proction line, jaw crusher is recommended for the first crushing of stone with higher hardness, and cone crusher is recommended for the second crushing. Compared with other equipment, cone crusher has longer service life of vulnerable parts, which is suitable for crushing stone with higher hardness.